Power supply cabinet with adjustable bottom wire inlet and outlet

Abstract

The invention discloses a power supply cabinet with an adjustable bottom wire inlet and outlet, which comprises a cabinet shell, a wire clamping bottom plate, a movable sliding plate and a wire protection strip, and is characterized in that the bottom of the cabinet shell is provided with a large kidney-shaped hole for wire outlet at the bottom of equipment and two circular holes for wire inlet outside the cabinet; the wire clamping bottom plate is provided with a large kidney-shaped hole which is close to the kidney-shaped hole at the bottom of the cabinet shell in size, and is fixed on the cabinet shell at the large kidney-shaped hole through a fastener; the movable sliding plate is provided with a half-kidney-shaped hole with the aperture consistent with that of the large kidney-shaped hole of the wire clamping bottom plate and long kidney-shaped holes located in the upper side and the lower side, and the movable sliding plate is adjustably connected to the wire clamping bottom plate through the long kidney-shaped holes and used for flexibly adjusting the actual size of the large kidney-shaped hole of the cabinet shell through the movable sliding plate according to the number of actual wire harnesses. The power supply cabinet can flexibly and continuously adjust the size of the wire inlet and the wire outlet according to the actual wire harness condition, is simple and reliable in structure, can ensure the sealing protection performance and the electromagnetic shielding effectiveness of the cabinet after adjustment, and has relatively low cost at the same time.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment cabinet technology, specifically to a power cabinet with adjustable bottom cable entry and exit ports. Background Technology

[0002] The bottom entry / exit method for electrical equipment cabinets such as power cabinets and distribution cabinets directly affects the cabinet's sealing and protection performance, electromagnetic shielding performance, and ease of installation and maintenance. Currently, the following methods are mainly used for bottom entry / exit: * **Airplane plug entry / exit:** Airplane plugs are installed at the bottom of the cabinet, and external cables are connected through these plugs. This method offers the highest level of protection, but airplane plugs are expensive, significantly increasing the overall cost of the cabinet. * **Large bottom opening entry / exit:** A large opening is cut or created directly in the bottom of the cabinet, and all cable bundles pass through this opening. This method is low-cost, but the gaps at the opening severely compromise the cabinet's electromagnetic shielding (EMC) integrity, and its waterproof and dustproof performance is extremely poor, failing to meet the requirements of complex industrial or outdoor environments. * **Multiple stuffing box entry / exit:** Multiple independent standard stuffing boxes are installed at the bottom of the cabinet, with each cable bundle or cable passing through one stuffing box. This method ensures protection and sealing, but when there are many incoming cable bundles of varying specifications, a large number of stuffing boxes are required, leading to a complex cabinet structure, cumbersome installation, and increased weight and cost due to the multiple metal stuffing boxes.

[0003] In summary, existing technologies suffer from high costs, poor protection and shielding performance, and complex and bulky structures. Therefore, a bottom-entry / exit wiring solution is needed that can flexibly adapt to different wiring harness conditions, ensure sealing and electromagnetic shielding performance, and is simple in structure and reasonably cost-effective. Summary of the Invention

[0004] This invention aims to overcome the shortcomings of existing technologies and provide a power cabinet with adjustable bottom cable entry and exit ports. This power cabinet can flexibly and continuously adjust the size of the cable entry and exit ports according to the actual wiring harness situation. It has a simple and reliable structure, and after adjustment, it ensures the cabinet's sealing and electromagnetic shielding performance, while also having a low cost.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a power cabinet with adjustable bottom cable entry and exit ports, comprising a cabinet shell, a cable tray base plate, a movable sliding plate, and a protective strip. The bottom of the cabinet shell has a large waist hole for bottom cable exit and two circular holes for external cable entry. The cable tray base plate has a large waist hole with a size similar to the waist hole at the bottom of the cabinet shell, and is fixed to the cabinet shell at the large waist hole by fasteners. The movable sliding plate has a half waist hole with the same diameter as the large waist hole of the cable tray base plate and long waist holes located on the upper and lower sides, and is adjustablely connected to the cable tray base plate through the long waist holes, so as to flexibly adjust the actual size of the large waist hole of the cabinet shell according to the actual number of cable bundles by moving the sliding plate.

[0006] Furthermore, the cabinet housing has a total of two rows of threaded holes around the large waist hole at the bottom. The outer two rows of threaded holes are used to install the cable clamping base plate, and the inner two rows of threaded holes are used to install the movable sliding plate.

[0007] Furthermore, the base plate of the cable card has two rows of countersunk holes around the large waist hole, and the position and number of these countersunk holes correspond one-to-one with the two rows of threaded holes on the outside of the large waist hole of the cabinet shell.

[0008] Furthermore, the base plate of the cable card has two rows of threaded holes around the large waist hole, and the position and number of these threaded holes correspond one-to-one with the two rows of threaded holes inside the bottom of the cabinet.

[0009] Furthermore, the length of the two elongated holes on both sides of the movable slide determines the movement path of the movable slide, thereby determining the range of wire diameter and quantity of the incoming and outgoing cable harnesses at the bottom of the cabinet. The length of the elongated holes of the movable slide is adjusted according to the actual outgoing cable diameter and quantity.

[0010] Furthermore, the base plate and the movable slide plate are made of stainless steel and are not painted.

[0011] Furthermore, the portion around the large waist hole at the bottom of the cabinet housing that contacts the cable tray base plate is not painted.

[0012] Furthermore, the protective strip is fastened around the large waist hole at the bottom of the cabinet housing and the half waist hole of the movable slide plate to prevent the cabinet wiring harness from being cut by the sheet metal edge. The protective strip is adjusted as the movable slide plate is adjusted.

[0013] Furthermore, after the cable tray base plate is installed, the movable slide plate is installed tightly against the cable tray base plate by passing screws through the elongated holes of the movable slide plate. When there are few cables coming out from the bottom of the power cabinet and the required cable hole diameter is small, the screws fixing the movable slide plate are loosened, and then the movable slide plate is slid to the right along the direction of the elongated holes until the cable harness is clamped. After clamping the cable harness, the cable protector is inserted along the gap between the cable and the cable tray base plate. After the cable is finally clamped, the screws are tightened to fix the movable slide plate.

[0014] Furthermore, when there are many cables coming out from the bottom of the power cabinet and the required cable outlet diameter is large, loosen the screws that fix the movable slide plate, slide the movable slide plate to the left along the long waist hole until the cable outlet requirements are met and the cable harness is secured. At this point, insert the protective strip around the large waist hole, and finally tighten the screws to fix the movable slide plate.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. High adaptability and flexibility: The size of the inlet and outlet openings in this invention can be flexibly adjusted according to the amount and thickness of the actual wire harness, avoiding the limitations of traditional large openings or multiple fixed-diameter stuffing boxes. This structure can adapt to various application scenarios and has extremely high versatility.

[0017] 2. Significantly reduced costs: Compared with expensive aero-mounted inserts and multiple stuffing box solutions, this invention adopts a mechanically adjustable structure, which greatly reduces material and processing costs.

[0018] 3. Excellent protection and EMC performance: The opening size can be adjusted to the minimum as needed. After adjustment, it can be sealed by locking and surrounding seals, effectively ensuring the IP protection level and electromagnetic shielding performance of the cabinet.

[0019] 4. Easy to install and maintain: No need to accurately calculate the opening size or prepare a large number of accessories during installation. When expanding capacity or changing the wiring harness later, simply loosen the adjustment and slide it to adjust, making maintenance extremely convenient. Attached Figure Description

[0020] Figure 1 This is a sectional view of the bottom of the power cabinet; Figure 2 This is a schematic diagram of the bottom structure of the server rack enclosure; Figure 3 This is a schematic diagram of the base plate structure for the cable clamp; Figure 4 This is a schematic diagram of the mobile skateboard structure; Figure 5 This is a schematic diagram of the cable tray base plate installation; Figure 6 This is a diagram illustrating the locked state of the sliding plate when there are fewer cables at the bottom. Figure 7 This is a diagram showing the sliding plate being locked in place when there are many cables at the bottom. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown in the figure, an adjustable power cabinet with bottom cable entry / exit ports provided by an embodiment of the present invention includes a cabinet housing 1, a cable clamping base plate 2, a movable sliding plate 3, and a protective strip 4. The bottom of the cabinet housing 1 has a large slotted hole for bottom cable exit and two circular holes for external cable entry, separating the incoming and outgoing cables to avoid electromagnetic interference. The cable clamping base plate 2 is fixed to the cabinet housing 1 at the large slotted hole by countersunk screws, and the cable clamping base plate 2 has a large slotted hole of similar size to the slotted hole at the bottom of the cabinet housing. The movable sliding plate 3 is fixed to the cable clamping base plate 2 by screws through its elongated slot, and the movable sliding plate 3 has a semi-slotted hole with the same diameter as the large slotted hole in the cable clamping base plate 2. The protective strip 4 is a commonly used protective strip, which clips around the large slotted hole at the bottom of the cabinet housing 1 and the semi-slotted hole in the movable sliding plate 3, mainly to prevent the cabinet cable harness from being cut by the sheet metal edges. The protective strip 4 can be adjusted along with the movable sliding plate.

[0023] like Figure 2 As shown, four rows of threaded holes are formed around the large waist hole at the bottom of the cabinet housing 1. The outer two rows of threaded holes are used to install the cable clamping base plate 2, and the inner two rows of threaded holes are used to install the movable sliding plate 3. The corresponding area on the bottom of the cabinet housing is left unpainted. When the cabinet housing is made of carbon steel, stainless steel sheets need to be welded around the large waist hole and left unpainted.

[0024] like Figure 3 As shown, the cable tray base plate 2 is made of stainless steel and has no paint on the surface. The cable tray base plate 2 also has a large recessed hole, the size of which is similar to the recessed hole on the bottom of the server rack. Two rows of countersunk holes are formed around the large recessed hole on the cable tray base plate; the position and number of these countersunk holes correspond one-to-one with the two rows of threaded holes on the outside of the large recessed hole on the server rack. Two rows of threaded holes are also formed around the large recessed hole on the cable tray base plate; the position and number of these threaded holes correspond one-to-one with the two rows of threaded holes on the inside of the bottom of the server rack. These threaded holes are used to install a sliding plate.

[0025] like Figure 5 As shown, the two rows of countersunk holes on the outside of the cable clamping base plate 2 correspond one-to-one with the two rows of threaded holes on the outside of the bottom of the cabinet. The cable clamping base plate is installed on the bottom of the cabinet using countersunk screws. The countersunk holes in the cable clamping base plate allow the heads of the countersunk screws to sink into the countersunk holes in the cable clamping base plate, ensuring that there are no protruding parts on the entire surface of the base plate after installation, ultimately ensuring unobstructed sliding of the movable slide plate.

[0026] The bottom of the cabinet housing 1 is also left unpainted. After the cable management base plate is installed, a good electrical continuity is formed around the edge where the cable management base plate is in close contact with the cabinet housing, ensuring the EMC performance of the opening. In addition, the gaps between the cables and the protective strip, as well as the gaps between the cables, can be sealed with sealant, further effectively ensuring the IP protection level and electromagnetic shielding performance of the cabinet.

[0027] like Figure 4 As shown, the movable slide plate 3 is made of stainless steel and has no painted surface. The movable slide plate 3 has a semi-circular hole, the diameter of which matches the diameter of the large semi-circular hole on the cable tray base plate 2. The movable slide plate 3 has two long semi-circular holes on each side. The length of these long semi-circular holes determines the movement path of the movable slide plate, thus determining the range of cable diameters and quantities for the incoming and outgoing cable harnesses at the bottom of the cabinet. The length of the long semi-circular holes can be adjusted according to the actual diameter and quantity of the outgoing cables. Furthermore, the movable slide plate 3 is also secured via these two long semi-circular holes.

[0028] like Figure 1As shown, after the cable tray base plate 2 is installed, the movable slide plate 3 is installed tightly against the cable tray base plate by passing screws through the elongated holes of the movable slide plate. When there are fewer cables exiting from the bottom of the power cabinet, it indicates that the required cable exit hole diameter at the bottom of the cabinet is smaller. In this case, simply loosen the screws fixing the movable slide plate, and then slide the movable slide plate to the right along the elongated holes until the cable harness is secured. After securing the cable harness, insert the cable guard 4 along the gap between the cable and the cable tray base plate. After finally securing the cable, tighten the screws to fix the movable slide plate. The secured state is as shown. Figure 6 As shown.

[0029] When there are many cables exiting from the bottom of the power cabinet, it indicates that the required cable exit hole diameter at the bottom of the cabinet is large. Similarly, simply loosen the screws securing the movable slide plate 3, and slide the movable slide plate to the left along the long slot until it meets the cable exit requirements and ensures the cable harness is securely clamped. At this point, insert the protective strip 4 around the large slot, and finally tighten the screws to secure the movable slide plate. The final clamping state is as follows. Figure 7 As shown.

[0030] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all technical solutions obtained through equivalent substitution or transformation fall within the protection scope of the present invention.

Claims

1. A power cabinet with adjustable bottom cable entry / exit ports, characterized in that: The device includes a cabinet housing, a cable management base plate, a movable sliding plate, and protective strips. The cabinet housing has a large slotted hole at the bottom for bottom cable exit and two circular holes for external cable entry. The cable management base plate has a large slotted hole of similar size to the slotted hole at the bottom of the cabinet housing, and is fixed to the cabinet housing at the slotted hole by fasteners. The movable sliding plate has a half-slotted hole with the same diameter as the large slotted hole on the cable management base plate, as well as long slotted holes on the upper and lower sides. The long slotted holes are adjustable to the cable management base plate, allowing the actual size of the large slotted hole on the cabinet housing to be flexibly adjusted according to the amount of cable harnesses by moving the sliding plate.

2. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 1, characterized in that: The cabinet housing has a total of two rows of threaded holes around the large waist hole at the bottom. The two outer rows of threaded holes are used to install the cable clamp base plate, and the two inner rows of threaded holes are used to install the movable slide plate.

3. The power cabinet with adjustable bottom cable entry / exit ports according to claim 1, characterized in that: The base plate of the cable card has two rows of countersunk holes around the large waist hole. The position and number of these countersunk holes correspond one-to-one with the two rows of threaded holes on the outside of the large waist hole of the cabinet shell.

4. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 3, characterized in that: The base plate of the cable card also has two rows of threaded holes around the large waist hole. The position and number of these threaded holes correspond one-to-one with the two rows of threaded holes inside the bottom of the cabinet.

5. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 1, characterized in that: The two elongated holes on both sides of the movable slide plate determine the movement path of the movable slide plate, thereby determining the range of wire diameter and quantity of the incoming and outgoing cable harnesses at the bottom of the cabinet. The length of the elongated holes of the movable slide plate is adjusted according to the actual wire diameter and quantity.

6. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 1, characterized in that: The base plate and the movable slide plate are made of stainless steel and are not painted.

7. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 1, characterized in that: The area around the large waist hole at the bottom of the cabinet housing that contacts the cable tray base plate is not painted.

8. The power cabinet with adjustable bottom cable entry / exit ports according to claim 1, characterized in that: The aforementioned protective strip is fastened around the large waist hole at the bottom of the cabinet housing and the half waist hole of the movable slide plate to prevent the cabinet wiring harness from being cut by the edge of the sheet metal. The protective strip is adjusted as the movable slide plate is adjusted.

9. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 1, characterized in that: After the cable tray base plate is installed, screw the movable slide plate through the elongated hole and install it tightly against the cable tray base plate. When there are few cables coming out from the bottom of the power cabinet and the required cable hole diameter is small, loosen the screws that fix the movable slide plate, and then slide the movable slide plate to the right along the elongated hole until the cable harness is clamped. After clamping the cable harness, insert the cable protector along the gap between the cable and the cable tray base plate. After the cable is finally clamped, tighten the screws to fix the movable slide plate.

10. The power cabinet with adjustable bottom cable inlet / outlet as described in claim 9, characterized in that: When there are many cables coming out from the bottom of the power cabinet and the required cable outlet diameter is large, loosen the screws that fix the movable slide plate, slide the movable slide plate to the left along the long waist hole until the cable outlet requirements are met and the cable harness is securely clamped. Then, insert the protective strip around the large waist hole and finally tighten the screws to fix the movable slide plate.

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