A visible window mounting structure of a cabinet
The locking assembly, which uses a rotating locking washer in conjunction with internal and external fasteners, solves the problem of the non-removable viewing window of the communication cabinet, enabling quick disassembly and installation, and improving maintenance convenience as well as the stability and sealing of the viewing window.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XINYI POWER EQUIP CO LTD
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-24
AI Technical Summary
The existing communication cabinet's viewing window installation structure is non-removable, which makes maintenance operations cumbersome and accelerates cabinet door wear, especially when installation space is limited, making equipment maintenance difficult.
The locking assembly uses a rotating locking washer in conjunction with inner and outer fasteners. The viewing window can be quickly locked or released by switching the slot direction of the rotating locking washer. Combined with the bearing plate and elastic pressure strip, it provides installation support and cushioning.
It enables quick disassembly and installation of the viewing window, improving the convenience of maintenance operations and the stability and sealing performance of the viewing window, while also enhancing the reliability of locking and the ease of operation.
Smart Images

Figure CN224555990U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrical technology, and specifically refers to a cabinet viewing window installation structure. Background Technology
[0002] Communication cabinets are widely used for storing outdoor or indoor communication equipment. To facilitate daily inspections, they are usually equipped with viewing windows on the cabinet doors, allowing maintenance personnel to observe the status of the internal equipment without opening the cabinet doors.
[0003] Existing communication cabinet viewing windows typically employ a fixed mounting structure, where the transparent panel is directly fixed to the cabinet door opening using pressure strips or adhesive, and the panel is not removable from the door. When operations such as plugging / unplugging cables or replacing modules are required, maintenance personnel still need to frequently open the cabinet door. This not only accelerates wear on the door hinges, leading to door sagging or incomplete closure, but also makes the operation cumbersome, especially when installation space is limited, as the inconvenience of opening the door further increases maintenance difficulty. Therefore, there is an urgent need for an installation structure that ensures both reliable window fixation and rapid disassembly. Utility Model Content
[0004] This invention solves the problems mentioned in the background art by rotating the locking pad to make the slot face or away from the viewing window, thereby enabling the viewing window to be locked or released quickly.
[0005] The purpose of this utility model is achieved as follows: a cabinet viewing window mounting structure, including a cabinet and an opening on the front side of the cabinet, further comprising: A support plate is located at the rear edge of the opening and is bent inward to form an installation space; An elastic pressure strip fills the installation space; The locking assembly includes an inner fastener, an outer fastener, and a locking washer. The inner fastener passes through the bearing plate, the elastic strip, and the opening edge, and its end is provided with an internal threaded hole. The outer fastener mates with the internal threaded hole, and the locking washer is sleeved on the outer fastener. The locking pad has a slot, which can be rotated to face or move away from the viewing window to lock or release the viewing window.
[0006] The present invention is further configured such that the supporting plate includes a first supporting plate located above and below the opening and a second supporting plate located to the left and right of the opening. Both the first supporting plate and the second supporting plate are bent inward from the rear edge of the opening, and the bent ends of the two plates overlap each other to form the installation space together.
[0007] The present invention is further configured such that the locking components are multiple sets, and are respectively located at the four corners of the opening.
[0008] The present invention is further provided with an anti-rotation structure on the contact surface between the locking washer and the edge of the opening.
[0009] The present invention is further configured such that the anti-rotation structure is an anti-slip texture provided on the locking pad.
[0010] The present invention is further provided that the locking washer is provided with a force-applying part that facilitates rotational operation.
[0011] The present invention is further configured such that the force-applying part is a protrusion disposed on the edge of the locking washer.
[0012] The present invention is further provided with a finger groove at the edge of the opening on the front side of the cabinet to assist in the disassembly of the viewing window.
[0013] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By cooperating with the locking washer and the inner and outer fasteners, rotating the locking washer causes the slot direction to switch, allowing the viewing window to quickly switch between the locked and released states, thus improving the convenience of maintenance operations.
[0014] 2. The elastic pressure strip fills the installation space formed by the supporting plate, forming an elastic buffer and compression on the edge of the viewing window, which improves the stability and sealing performance of the viewing window installation.
[0015] 3. By setting an anti-rotation structure and a force-applying part on the locking washer, the washer is prevented from rotating accidentally when tightened, while facilitating manual rotation operation, thus improving the reliability of locking and the convenience of operation. Attached Figure Description
[0016] Figure 1 This is a first structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the second structure of this utility model; Figure 3 This is a schematic diagram of the internal cross-sectional structure of this utility model.
[0017] The attached diagram is labeled as follows: 1. Cabinet; 2. Opening; 3. Support plate; 30. First support plate; 31. Second support plate; 4. Elastic pressure strip; 5. Locking assembly; 50. Internal fastener; 51. External fastener; 52. Locking washer; 6. Internal threaded hole; 7. Groove; 8. Viewing window; 9. Anti-rotation structure; 10. Force application part; 11. Finger groove. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 : Example 1:
[0019] This embodiment provides a cabinet viewing window mounting structure, including a cabinet 1 and an opening 2 on the front side of the cabinet 1, and further including: The supporting plate 3 is located at the rear edge of the opening 2 and is bent inward to form an installation space; Elastic pressure strip 4 is filled into the installation space; The locking assembly 5 includes an inner fastener 50, an outer fastener 51, and a locking washer 52. The inner fastener 50 passes through the edge of the bearing plate 3, the elastic pressure strip 4, and the opening 2, and its end is provided with an internal threaded hole 6. The outer fastener 51 cooperates with the internal threaded hole 6, and the locking washer 52 is sleeved on the outer fastener 51. The locking pad 52 has a slot 7. By rotating the locking pad 52, the slot 7 can be made to face or move away from the viewing window 8 to lock or release the viewing window 8.
[0020] Cabinet 1 serves as the main storage unit for communication equipment. Its front side panel has a through opening 2 for mounting a viewing window 8, allowing observation of the internal equipment status from outside the cabinet 1. The viewing window 8 is typically made of transparent materials such as tempered glass or polycarbonate sheet, and its dimensions match the opening 2. It is detachably fixed within the opening 2 using a mounting structure.
[0021] The support plate 3 is located at the rear edge of the opening 2, that is, inside the cabinet 1 on one side, close to the perimeter of the opening 2. The support plate 3 can be made of metal sheet such as galvanized steel sheet or stainless steel sheet. Its overall structure is that it bends and extends from the rear edge of the opening 2 toward the inside of the cabinet 1, thereby forming an inwardly recessed installation space on the rear side of the opening 2. The support plate 3 specifically consists of a first support piece 30 and a second support piece 31, wherein the first support piece 30 is located above and below the opening 2, and the second support piece 31 is located to the left and right of the opening 2. Both the first support piece 30 and the second support piece 31 bend inward vertically or nearly vertically from the rear edge of the opening 2. The bent ends of the two pieces overlap each other in the four corner areas of the opening 2. That is, the ends of the first support piece 30 at the top and bottom overlap and fit together with the ends of the second support piece 31 on the left and right sides. Through this overlapping structure, the first support piece 30 and the second support piece 31 together form a complete rectangular frame-like installation space surrounding the rear side of the opening 2. The function of the support plate 3 is to provide a mounting base for the viewing window 8, reinforce the edge of the opening 2, and accommodate the elastic strip 4.
[0022] The elastic strip 4 fills the installation space formed by the bending of the supporting plate 3. The elastic strip 4 is made of a material with elasticity and compression recovery properties, such as rubber, silicone, or foam. Its cross-sectional shape matches the internal contour of the installation space, typically rectangular or circular. The elastic strip 4 is continuously installed along the extension direction of the installation space, completely filling the entire space. When installing the viewing window 8, the edge of the viewing window 8 is embedded in the opening 2, and its back side contacts and presses against the front surface of the elastic strip 4, causing the elastic strip 4 to undergo elastic compression deformation. The function of the elastic strip 4 is to apply a pre-tightening force towards the front of the cabinet 1 to the viewing window 8, ensuring a tight fit between the front edge of the viewing window 8 and the front edge of the opening 2, while absorbing vibration and tolerances, improving sealing and stability.
[0023] The locking assembly 5 is used to lock the viewing window 8 within the opening 2 or to release the viewing window 8 to allow its removal. The locking assembly 5 includes an inner fastener 50, an outer fastener 51, and a locking washer 52. The inner fastener 50 is a metal rod-shaped part, with one end being a head or having an anti-detachment structure, and the other end being a rod portion, the end of which has an internally threaded hole 6. The inner fastener 50 passes through the supporting plate 3, the elastic pressure strip 4, and the wall at the edge of the opening 2 from one side inside the cabinet 1. Specifically, the rod portion of the inner fastener 50 passes sequentially through the side wall of the supporting plate 3, the solid part of the elastic pressure strip 4, and finally through the wall panel at the edge of the opening 2, with its end extending to near the front surface of the cabinet 1 or flush with the front surface of the cabinet 1. The head or anti-detachment structure of the inner fastener 50 is engaged inside the cabinet 1 to prevent it from coming out of the opening 2. The number of internal fasteners 50 corresponds to the number of sets of locking components 5, usually four or more sets, which are respectively set near the four corners of the opening 2 or evenly distributed along the edge of the opening 2.
[0024] The outer fastener 51 is a bolt, the external thread of which mates with the internal threaded hole 6 at the end of the inner fastener 50. The head diameter of the outer fastener 51 is larger than the diameter of the bolt, used to press the locking washer 52 when tightened. The locking washer 52 is fitted onto the bolt of the outer fastener 51, located between the head of the outer fastener 51 and the front surface of the edge of the opening 2. The locking washer 52 is a thin sheet-like part made of metal or hard plastic, with a through hole in its center for the bolt of the outer fastener 51 to pass through. The edge of the locking washer 52 has a notch 7, which is a notch extending inward from the outer periphery of the locking washer 52. The function of the locking washer 52 is to change the orientation of the slot 7 by rotating it. When the slot 7 is rotated to face the center of the viewing window 8, the edge of the viewing window 8 is aligned with the slot 7. At this time, the viewing window 8 can move along the front and back direction of the cabinet 1 without being blocked by the locking washer 52, that is, it is in the released state. When the slot 7 is rotated to face away from the viewing window 8, the solid part of the locking washer 52 is located in front of the edge of the viewing window 8, blocking the viewing window 8 from moving forward, that is, it is in the locked state.
[0025] An anti-rotation structure 9 is provided on the contact surface between the locking washer 52 and the edge of the opening 2. The function of the anti-rotation structure 9 is to prevent the locking washer 52 from rotating due to vibration or accidental contact when it is pressed against the edge surface of the opening 2 by the external fastener 51, thereby ensuring the reliability of the locked state. The anti-rotation structure 9 can take the form of anti-slip textures on the locking washer 52, that is, uneven textures are pressed into the surface of the locking washer 52 that contacts the edge of the opening 2 to increase the coefficient of friction. In addition to anti-slip textures, the anti-rotation structure 9 can also adopt a combination of protrusions and grooves, that is, at least one protrusion is provided on the contact surface of the locking washer 52, and a groove is provided at the corresponding position on the edge of the opening 2. When the locking washer 52 is pressed, the protrusion is embedded in the groove to achieve circumferential positioning.
[0026] The locking washer 52 is also provided with a force-applying part 10 for easy rotation. The function of the force-applying part 10 is to provide a point of force for the operator to rotate the locking washer 52 with their fingers or tools. The force-applying part 10 may be one or more protrusions provided on the edge of the locking washer 52. The protrusion may be a small protrusion extending outward from the outer periphery of the locking washer 52, or it may be a groove or hole opened on the surface of the locking washer 52 to facilitate the insertion of a fingernail or screwdriver tip to apply force.
[0027] In the installed state, the outer fastener 51 passes through the locking washer 52 and screws into the internal threaded hole 6 of the inner fastener 50. After tightening, the head of the outer fastener 51 presses the locking washer 52 against the front surface of the edge of the opening 2. At this time, due to the anti-rotation structure 9, the locking washer 52 is reliably positioned at a certain angle. The operator can adjust the angle of the locking washer 52 as needed: when it is necessary to lock the viewing window 8, rotate the locking washer 52 so that its slot 7 is away from the viewing window 8, and the solid part of the locking washer 52 blocks the front edge of the viewing window 8, preventing the viewing window 8 from coming out forward; when it is necessary to release the viewing window 8, use a tool or finger to slightly loosen the outer fastener 51 through the force application part 10, rotate the locking washer 52 so that the slot 7 is aligned with the viewing window 8, and then the viewing window 8 can be taken out forward from the opening 2 without opening the cabinet door. When reinstalling the viewing window 8, align the edge of the viewing window 8 with the opening 2 and insert it. Rotate the locking washer 52 until the slot 7 is away from the viewing window 8, and then tighten the outer fastener 51 to complete the locking.
[0028] The entire installation structure is supported by the load-bearing plate 3, the elastic pressure strip 4 provides pre-tightening and buffering, and the locking component 5 enables switchable locking and releasing, thereby ensuring the reliable fixation of the viewing window 8 while realizing the function of quickly disassembling the viewing window 8 without opening the cabinet door.
[0029] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. A viewing window mounting structure for a cabinet, comprising a cabinet (1) and an opening (2) formed on the front side of the cabinet (1), characterized in that, Also includes: The supporting plate (3) is located at the rear edge of the opening (2) and is bent inward to form an installation space; Elastic pressure strip (4) is filled into the installation space; The locking assembly (5) includes an inner fastener (50), an outer fastener (51) and a locking washer (52). The inner fastener (50) passes through the bearing plate (3), the elastic strip (4) and the edge of the opening (2), and its end is provided with an internal threaded hole (6). The outer fastener (51) cooperates with the internal threaded hole (6), and the locking washer (52) is sleeved on the outer fastener (51). The locking pad (52) has a slot (7) which can be rotated to face or move away from the viewing window (8) to lock or release the viewing window (8).
2. The cabinet viewing window installation structure according to claim 1, characterized in that, The support plate (3) includes a first support plate (30) located above and below the opening (2) and a second support plate (31) located to the left and right of the opening (2). The first support plate (30) and the second support plate (31) are both bent inward from the rear edge of the opening (2), and the bent ends of the two overlap each other to form the installation space.
3. The cabinet viewing window installation structure according to claim 1, characterized in that, The locking components (5) are in multiple sets and are respectively located at the four corners of the opening (2).
4. The cabinet viewing window installation structure according to claim 1, characterized in that, The locking pad (52) has an anti-rotation structure (9) on the contact surface with the edge of the opening (2).
5. The cabinet viewing window installation structure according to claim 4, characterized in that, The anti-rotation structure (9) is an anti-slip texture provided on the locking pad (52).
6. The cabinet viewing window installation structure according to claim 1, characterized in that, The locking washer (52) is provided with a force-applying part (10) for easy rotation operation.
7. The cabinet viewing window installation structure according to claim 6, characterized in that, The force-applying part (10) is a protrusion provided on the edge of the locking pad (52).
8. The cabinet viewing window installation structure according to claim 1, characterized in that, The cabinet (1) has a finger groove (11) at the edge of the opening (2) on the front side for assisting in the disassembly of the viewing window (8).