LCP cabinet observation window waterproof structure

Abstract

The utility model belongs to the field of LCP cabinet, disclose LCP cabinet observation window waterproof structure, its installation on the outer sheet metal, and the vertical side wall of outer sheet metal is as the outer sheet metal outer side wall, the side corresponding with the outer sheet metal outer side wall is as the outer sheet metal inner side wall, and the direction from the outer sheet metal outer side wall to the outer sheet metal inner side wall is as the reference direction. The utility model places the double -layer hollow glass in the second glass installation position, and fills the polyurethane foaming material between glass and outer sheet metal inner side wall extension part, fills the foaming three yuan e propylene protective pad between glass and the vertical extension part of the compression strip, realizes the both sides sealing of hollow double -layer glass, namely one waterproof, and the compression strip still is fixed with square steel, can make the compression of compression strip get the promotion, to further satisfy the close degree when the connection between compression strip and glass, to realize double -layer waterproof, and contact with its bottom surface through the bending mode, to realize three -layer waterproof, to make above -mentioned waterproof structure satisfy the protection requirement of IPX5.

Description

Technical Field

[0001] This utility model belongs to the field of LCP cabinets, specifically relating to the waterproof structure of the observation window of an LCP cabinet. Background Technology

[0002] LCP cabinet, or grounding control cabinet, is a control cabinet installed at the work site. It may contain a PLC or other control devices for direct control of on-site equipment. It is widely used in production sites of industries such as power, chemical, metallurgy, and building materials to perform local control and operation of high-voltage switchgear, and to realize the monitoring, control and protection of the power system.

[0003] The LCP cabinet has an observation window through which the operation of the equipment inside can be observed. Currently, the installation structure of the observation window is as follows: Figure 1 , 2 As shown, the pressure strip 9 is detachably connected to the outer sheet metal of the cabinet by screws 10 or other means, and has a right-angle bend in the vertical direction, so that there is a first glass mounting position between it and the outer sheet metal. The glass is placed in the first glass mounting position, and the glass is filled with foam strip 8 between itself and the outer sheet metal 1 and between itself and the right-angle bend of the pressure strip. The foam strip is made of EPDM, so that the glass 7 can be installed in the glass mounting position and sealed.

[0004] However, the above solution suffers from poor waterproofing performance of the EPDM foam strip and inconsistent connection methods between the strip and the outer sheet metal, resulting in a decrease in the compression of the strip. This is due to inconsistencies in the processing technology and control requirements used. Ultimately, the sealing effect of the glass window fails to meet the IPX5 protection requirements. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof structure for the observation window of an LCP cabinet, aiming to achieve this.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A waterproof structure for an observation window of an LCP cabinet is provided, which is installed on an outer sheet metal. A vertical sidewall of the outer sheet metal is designated as its outer sidewall, and the side corresponding to the outer sidewall is designated as its inner sidewall. The direction from the outer sidewall to the inner sidewall is used as a reference direction. The structure includes...

[0008] A square steel bar is fixedly installed on the inner sidewall of an outer sheet metal panel, and has an upper horizontal portion extending along a reference direction. The inner sidewall of the outer sheet metal panel extends beyond the upper horizontal portion of the square steel bar and serves as an extension of the inner sidewall of the outer sheet metal panel.

[0009] A pressure strip is fixed to a square steel bar and extends vertically until it protrudes beyond the horizontal portion of the square steel bar, serving as the vertical extension of the pressure strip.

[0010] The area formed by the inner sidewall extension of the outer sheet metal, the upper horizontal part of the square steel, and the vertical extension of the pressure strip is used as the second glass mounting position. Glass is installed in the second glass mounting position, and polyurethane foam material is filled between the glass and the inner sidewall extension of the outer sheet metal. Foamed EPDM protective pad is filled between the glass and the vertical extension of the pressure strip.

[0011] Preferably, the glass and the square steel are connected by sheet metal pressing.

[0012] Preferably, the glass is a double-glazed insulated glass.

[0013] Preferably, the square steel also has a vertical surface, and the pressure strip is fixed to the vertical surface of the square steel along the vertical direction.

[0014] Preferably, the pressure strip has a vertical portion that is parallel to the inner sidewall and outer sidewall of the outer sheet metal; the pressure strip is fixedly installed on the vertical surface of the square steel by studs.

[0015] Furthermore, a through hole is provided on the vertical surface of the square steel. One end of the stud is riveted to the inner side wall of the outer sheet metal, and the other end extends out of the vertical surface of the square steel through the through hole and is inserted into the pressure strip. Then, the locking nut is threaded onto the part of the stud that extends out of the pressure strip and the nut is locked until the pressure strip is close to the square steel.

[0016] Preferably, the square steel also has a lower surface, and the pressure strip has a horizontal bending portion, which is bonded to the lower surface of the square steel by sheet metal.

[0017] Furthermore, the bottom of the vertical part of the pressure strip is bent in the opposite direction along the reference direction to form a horizontal bending part of the pressure strip. When the vertical part of the pressure strip is fixed to the vertical surface of the square steel, the upper surface of the horizontal bending part of the pressure strip is in direct contact with the bottom of the lower surface of the square steel, and the end of the horizontal bending part of the pressure strip is in direct contact with the outer sheet metal.

[0018] Preferably, the thickness of the polyurethane foam material is greater than the thickness of the foamed EPDM protective pad.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The main purpose of this utility model is to place double-glazed glass in the second glass mounting position, fill the space between the glass and the inner sidewall extension of the outer sheet metal with polyurethane foam, and fill the space between the glass and the vertical extension of the pressure strip with foamed EPDM protective pads. This achieves sealing on both sides of the double-glazed glass, providing a first layer of waterproofing. Furthermore, the pressure strip is further fixed to the square steel, which increases the compression of the pressure strip to further ensure a tight connection between the pressure strip and the glass, thus achieving a second layer of waterproofing. The bottom surface is then contacted through bending to achieve a third layer of waterproofing. This ensures that the above-mentioned waterproof structure meets the IPX5 protection requirements. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the existing technology;

[0022] Figure 2 for Figure 1 Enlarged view of some of the structures in the image;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model;

[0024] Figure 4 for Figure 3 Enlarged view of part of the structure.

[0025] In the diagram: 1. Outer sheet metal; 101. Outer wall of outer sheet metal; 102. Inner wall of outer sheet metal; 2. Square steel; 21. Upper horizontal part of square steel; 22. Vertical surface of square steel; 23. Lower surface of square steel; 31. Vertical extension of pressure strip; 311. Vertical part of pressure strip; 32. Horizontal bending part of pressure strip; 4. Double-glazed insulated glass; 5. Polyurethane foam material; 6. EPDM protective pad; 7. Glass; 8. Foam strip; 9. Pressure strip; 10. Screw; 11. Stud. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments are described in detail with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0027] like Figure 3-4 As shown, a waterproof structure for the observation window of an LCP cabinet is installed on an outer sheet metal 1. A vertical sidewall of the outer sheet metal 1 is designated as the outer outer wall 101, and the side corresponding to the outer outer wall 101 is designated as the inner outer wall 102. The direction from the outer outer wall 101 to the inner outer wall 102 is designated as the reference direction A. The structure includes...

[0028] Square steel 2 is fixedly installed on the inner wall 102 of the outer sheet metal (mainly by welding square steel 2 to the inner wall 102 of the outer sheet metal), and has an upper horizontal portion 21 extending along the reference direction A. The inner wall 102 of the outer sheet metal extends beyond the upper horizontal portion 21 of the square steel and serves as an extension of the inner wall of the outer sheet metal.

[0029] The pressure strip 3 is fixed to the square steel 2 and extends vertically until it extends beyond the horizontal part 21 on the square steel, and serves as the vertical extension part 31 of the pressure strip. Specifically, the square steel 2 also has a vertical surface 22, and the pressure strip 3 is fixed to the vertical surface 22 of the square steel in the vertical direction.

[0030] The area formed by the extension of the inner sidewall of the outer sheet metal, the horizontal part 21 of the square steel and the vertical extension of the pressure strip 31 is used as the second glass mounting position. Glass (preferably double-layer hollow glass 4) is installed in the second glass mounting position, and polyurethane foam material 5 is filled between the glass 4 and the extension of the inner sidewall of the outer sheet metal 102. Foamed EPDM protective pad 6 is filled between the double-layer hollow glass 4 and the vertical extension of the pressure strip 31.

[0031] The pressure strip 3 has a vertical part 311, which is parallel to the inner side wall 102 and the outer side wall 101 of the outer sheet metal. The pressure strip 3 is fixedly installed on the vertical surface of the square steel by a stud 1. Specifically, a through hole is opened on the vertical surface of the square steel 2. One end of the stud 1 is riveted to the inner side wall 102 of the outer sheet metal, and the other end extends out of the vertical surface of the square steel through the through hole and is inserted into the pressure strip 3. Then, the locking nut is threaded onto the part of the stud that extends out of the pressure strip 3 and the nut is locked until the pressure strip 3 is close to the square steel 2.

[0032] The square steel 2 also has a lower surface 23, and the pressure strip 3 has a horizontal bending part 32. The horizontal bending part 32 of the pressure strip is bonded to the lower surface 23 of the square steel through sheet metal. Specifically, the bottom of the vertical part 31 of the pressure strip is bent in the opposite direction along the reference direction A to form the horizontal bending part 32 of the pressure strip. When the vertical part 31 of the pressure strip is fixed to the vertical surface 22 of the square steel, the upper surface of the horizontal bending part 32 of the pressure strip is in direct contact with the bottom of the lower surface 23 of the square steel, and the end of the horizontal bending part 32 of the pressure strip is in direct contact with the outer sheet metal.

[0033] The thickness of polyurethane foam material 5 is greater than the thickness of foamed EPDM protective pad 6.

[0034] The above solution mainly involves placing double-glazed windows in the second glass mounting position, filling the space between the glass 4 and the extension of the inner wall 102 of the outer sheet metal with polyurethane foam material 5, and filling the space between the glass 4 and the vertical extension 31 of the pressure strip with foamed EPDM protective pad 6. This achieves sealing on both sides of the double-glazed windows for first-level waterproofing. Furthermore, the pressure strip is further fixed to the square steel, which increases the compression of the pressure strip. Specifically, after the pressure strip is tightened with nuts, the compression is transferred to the polyurethane foam material through the pressure strip-protective pad-glass, and forms compression with the outer sheet metal to further ensure the tightness of the connection between the pressure strip and the glass, thus achieving second-level waterproofing. The bottom surface is then contacted through bending to achieve third-level waterproofing. This ensures that the above waterproof structure meets the IPX5 protection requirements.

[0035] In addition, it should be noted that the above embodiment takes the sealing of the glass on one side of the observation window as an example. Therefore, the rest of the observation window should also be sealed in accordance with the above-described requirements.

[0036] The above embodiments are preferred embodiments of this utility model and are not intended to limit the protection of this utility model.

Claims

1. A waterproof structure for an observation window of an LCP cabinet, which is installed on an outer sheet metal, with a vertical sidewall of the outer sheet metal serving as the outer sidewall, and the side corresponding to the outer sidewall serving as the inner sidewall, and the direction from the outer sidewall to the inner sidewall serving as the reference direction, characterized in that, include: A square steel bar is fixedly installed on the inner sidewall of an outer sheet metal panel, and has an upper horizontal portion extending along a reference direction. The inner sidewall of the outer sheet metal panel extends beyond the upper horizontal portion of the square steel bar and serves as an extension of the inner sidewall of the outer sheet metal panel. A pressure strip is fixed to a square steel bar and extends vertically until it protrudes beyond the horizontal portion of the square steel bar, serving as the vertical extension of the pressure strip. The area formed by the inner sidewall extension of the outer sheet metal, the upper horizontal part of the square steel, and the vertical extension of the pressure strip is used as the second glass mounting position. Glass is installed in the second glass mounting position, and polyurethane foam material is filled between the glass and the inner sidewall extension of the outer sheet metal. Foamed EPDM protective pad is filled between the glass and the vertical extension of the pressure strip.

2. The waterproof structure of the LCP cabinet observation window according to claim 1, characterized in that: The glass and square steel are connected by sheet metal pressing.

3. The waterproof structure of the LCP cabinet observation window according to claim 2, characterized in that: The glass is a double-glazed insulated glass.

4. The waterproof structure of the LCP cabinet observation window according to claim 1, characterized in that: The square steel also has a vertical surface, and the pressure strip is fixed to the vertical surface of the square steel along the vertical direction.

5. The waterproof structure of the LCP cabinet observation window according to claim 4, characterized in that: The pressure strip has a vertical part that is parallel to the inner side wall and the outer side wall of the outer sheet metal; the pressure strip is fixedly installed on the vertical surface of the square steel by studs.

6. The waterproof structure of the LCP cabinet observation window according to claim 5, characterized in that: The square steel also has a lower surface, and the pressure strip has a horizontal bending portion, which is bonded to the lower surface of the square steel by sheet metal.

7. The waterproof structure of the LCP cabinet observation window according to claim 1, characterized in that: The thickness of polyurethane foam material is greater than that of foamed EPDM protective pads.

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