Insulated base box

Abstract

The utility model discloses an insulated base box, relates to the field of electrical equipment, and solves the problems of electric shock and short circuit risks caused by a mounting plate connecting structure in the base box. A plurality of fixing parts connected with the mounting plate are fixed on the bottom plate, the mounting plate is provided with mounting holes for the fixing parts to penetrate through, the fixing parts are sleeved with insulating sleeves and cushion covers, the insulating sleeves are located between the bottom plate and the mounting plate, the bottom surfaces and the top surfaces of the insulating sleeves are in contact with the bottom plate and the cushion covers respectively, and the cushion covers are arranged in the mounting holes to isolate the contact between the mounting holes and the fixing parts. Through the arrangement of the insulation sleeve and the cushion sleeve which are sleeved on the fixing piece, the direct contact between the metal fixing piece and the mounting plate is effectively isolated, and the insulation sleeve enables a proper interval to be formed between the bottom plate and the mounting plate, so that the current possibly introduced by the bottom plate is effectively prevented from being conducted to the mounting plate; and the cushion cover reliably isolates the mounting hole of the mounting plate from the stud, so that electrification caused by direct contact between the mounting plate and the stud is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electrical equipment, in particular to an insulated basic electrical box. Background Art

[0002] In the current field of power distribution and control, the basic electrical box, as an electrical equipment supporting device widely used in various industrial, commercial and civil buildings, plays a crucial role. It provides a space for centralized installation, protection and circuit connection of internal electrical components such as circuit breakers, contactors, relays, etc., ensuring the safe and stable operation of the power system, and has now become a very mature and standard device.

[0003] Generally, multiple mounting plates need to be arranged inside the basic electrical box to reasonably layout electrical components with different functions. In the prior art, most of these mounting plates are fixed on the bottom plate of the box body by means of stud connections. Due to the high strength and strong stability of studs, they have become the preferred connecting parts for constructing the support structure of the mounting plate. However, since studs are generally made of metal materials and have good electrical conductivity, when the mounting plate is in close contact with the studs, it is very likely to be accidentally electrified, resulting in a short circuit between mounting plates with different potentials. The short circuit will not only interfere with the normal electrical circuit, cause the equipment to malfunction or stop running, affecting the continuity of power supply, but more seriously, if a person touches the electrified mounting plate or box body without knowing it, the current passing through the human body instantly will far exceed the safety threshold, triggering an electric shock accident and posing a direct threat to the life safety of the operator. Summary of the Utility Model

[0004] The purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides an insulated basic electrical box to solve the problems of electric shock and short - circuit risks brought by the connection structure of the mounting plate inside the basic electrical box.

[0005] The technical solution of the utility model: It includes a box body. The bottom surface of the box body has a bottom plate. Above the bottom plate, there is a mounting plate. A number of fixing parts for connecting the mounting plate are fixed on the bottom plate. Mounting holes for the fixing parts to pass through are opened on the mounting plate. An insulating sleeve and a cushion sleeve are sleeved outside the fixing parts. The insulating sleeve is located between the bottom plate and the mounting plate. The bottom surface and the top surface of the insulating sleeve are respectively in contact with the bottom plate and the cushion sleeve. The cushion sleeve is placed in the mounting hole to isolate the contact between the mounting hole and the fixing part.

[0006] With the above technical solution, through the provision of an insulating sleeve and a cushion sleeve sleeved on the fixing member, the direct contact between the fixing member made of metal material and the mounting plate is effectively isolated. The insulating sleeve provides a proper interval between the bottom plate and the mounting plate, effectively blocking the current that may be introduced by the bottom plate from being conducted to the mounting plate. The cushion sleeve reliably isolates the mounting hole of the mounting plate from the stud, preventing the mounting plate from being electrified due to direct contact with the stud, comprehensively preventing the occurrence of accidental electrification of the mounting plate, improving the insulation safety of the internal electrical installation structure of the basic electrical box, eliminating electrical circuit interference caused by short circuits, enabling electrical components such as circuit breakers, contactors, and relays to operate according to normal design logic, and ensuring the life safety of operators.

[0007] In a possible design, the fixing member includes a stud and a nut, the cushion sleeve includes a pressing portion and an inner sleeve portion. The inner sleeve portion is located between the stud and the mounting hole, and the pressing portion is located above the inner sleeve portion and extends radially. The pressing portion is padded between the nut and the top surface of the mounting plate.

[0008] With the above design, when the nut is tightened on the stud, a stable fastening force can be applied to the part of the stud passing through the mounting hole of the mounting plate. The inner sleeve portion fits closely between the stud and the mounting hole, effectively preventing the stud and the mounting plate from conducting electricity due to direct contact. The pressing portion not only strengthens the pressing effect of the nut on the mounting plate, preventing the mounting plate from moving up and down, but also isolates between the nut and the mounting plate, avoiding accidental electrification of the mounting plate due to the electrified nut, achieving comprehensive and dead - angle - free insulation protection.

[0009] In a possible design, the insulating sleeve is made of nylon PA6 material.

[0010] With the above design, this material can reliably isolate the conductive path between the stud and the mounting plate and the bottom plate of the box. Moreover, nylon PA6 has relatively high strength and rigidity. When used as an insulating sleeve, even under certain external forces, it can still keep a certain interval between the mounting plate and the bottom plate, ensuring the reliability of the internal installation structure of the basic electrical box.

[0011] In a possible design, the cushion sleeve is made of nylon PA610 material.

[0012] With the above design, nylon PA610 is a polymer material with good insulation performance, which can effectively avoid current conduction between the mounting plate and the stud. Moreover, it has relatively high toughness and wear resistance, which enables the cushion sleeve to withstand better when subjected to external forces, such as the extrusion of the nut during installation or the stress generated by vibration during use, without brittle fracture.

[0013] In a possible design, an opening for placing the stud is extendedly provided on one side of the mounting hole.

[0014] With the above design, the stud can be directly inserted into the mounting hole from the opening, without passing through the mounting hole axially. The position and angle during the installation process of the mounting plate can be flexibly adjusted, greatly simplifying the installation process and improving the installation efficiency. Especially in the case of limited installation space or inconvenient operation, it is easier to accurately align the mounting hole, and it is easy to assemble and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the external structure of a specific embodiment of the present invention;

[0016] Figure 2 is a schematic cross-sectional structure diagram of a specific embodiment of the present invention;

[0017] Figure 3 For the present invention Figure 2 is a partial enlarged view of part A;

[0018] Figure 4 is a schematic diagram of a partial structure of a specific embodiment of the present invention;

[0019] Figure 5 For the present invention Figure 4 is an exploded view;

[0020] Wherein, 1, box body; 11, bottom plate; 2, mounting plate; 21, mounting hole; 22, opening; 3, fixing member; 31, stud; 32, nut; 4, insulating sleeve; 5, cushion sleeve; 51, cushion pressing part; 52, inner sleeve part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] As Figures 1 - 5An insulated base box as shown includes a box body 1. The bottom surface of the box body 1 has a bottom plate 11. Above the bottom plate 11, there is a mounting plate 2. At least four fixing members 3 for connecting the mounting plate 2 are fixed on the bottom plate 11. Mounting holes 21 are provided at the four corner positions of the mounting plate 2, and the fixing members 3 pass through the mounting holes 21 for connection and fixation. An insulating sleeve 4 and a cushion sleeve 5 are sleeved outside the fixing member 3. The insulating sleeve 4 and the cushion sleeve 5 respectively wrap around the outer periphery of the fixing member 3. The insulating sleeve 4 is also located between the bottom plate 11 and the mounting plate 2. The bottom surface and the top surface of the insulating sleeve 4 respectively press against and contact the bottom plate 11 and the cushion sleeve 5. The cushion sleeve 5 is placed in the mounting hole 21 to isolate the contact between the mounting hole 21 and the fixing member 3. Through the design of the insulating sleeve 4 and the cushion sleeve 5 sleeved outside the fixing member 3, the direct contact between the fixing member 3 made of metal material and the mounting plate 2 is effectively isolated, ensuring that even in a working environment with humidity or a lot of dust, current leakage can be effectively prevented, short circuit and electric shock accidents caused by electric leakage can be avoided, and the possibility of electric shock accidents for operators due to accidental contact with the energized part is reduced. Compared with the traditional complex insulation treatment method, the technical solution proposed by the present utility model adopts a simple and effective design idea. Since it is not necessary to make a large-scale modification to the existing design of the base box and there is no need to change the original layout mode of the mounting plate 2, it is not only easy to implement, but also greatly reduces the production cost, and has good compatibility and popularization value.

[0022] The fixing member 3 includes a stud 31 and a nut 32, and the nut 32 is tightened on the stud 31. The stud 31, the nut 32, and the mounting plate 2 are still made of metal materials. With their inherent characteristics of high strength and strong stability, the three can still provide reliable support or fixation. Even if the insulating sleeve 4 and the cushion sleeve 5 are added, due to their reasonable layout and installation method, the connection and fastening effect of the stud 31 on the mounting plate 2 will not be weakened. The mounting plate 2 can still be stably built inside the box body 1, ensuring the stability of the electrical components during operation and not sacrificing the mechanical properties of the overall structure in pursuit of the insulation effect. The cushion sleeve 5 includes a pressing part 51 and an inner sleeve part 52. The inner sleeve part 52 is located between the stud 31 and the mounting hole 21, effectively isolating the direct contact between the metal stud 31 and the mounting plate 2. The pressing part 51 is located above the inner sleeve part 52 and extends in the radial direction. In the cross-section, the pressing part 51 and the inner sleeve part 52 are vertically distributed, and the pressing part 51 is placed between the nut 32 and the top surface of the mounting plate 2. When the nut 32 is tightened, the pressing part 51 can evenly disperse the pressure applied by the nut 32, avoiding deformation or damage of the mounting plate 2 caused by excessive local pressure. At the same time, the existence of the pressing part 51 also ensures that the inner sleeve part 52 will not shift due to excessive pressure during the tightening process of the nut 32, ensuring the integrity of the insulating layer. The setting of the above cushion sleeve 5 does not require a large modification to the existing assembly process. Just placing the cushion sleeve 5 in the correct way can achieve effective insulation protection, which not only reduces the operation difficulty but also reduces the assembly time and improves the work efficiency.

[0023] The insulating sleeve 4 is made of nylon PA6 material. Using nylon PA6 material as the material of the insulating sleeve 4 can effectively prevent current from being conducted from the stud 31 to the mounting plate 2, thus avoiding the short-circuit and electric shock risks caused by current leakage. Nylon PA6 has high mechanical strength and good toughness, which can provide sufficient support strength while ensuring the insulation effect, preventing the mounting plate 2 and the bottom plate 11 from being too close due to external impact or extrusion, which is particularly important for the basic box under long-term complex working conditions.

[0024] The cushion sleeve 5 is made of nylon PA610 material. The nylon PA610 material can not only provide good insulation performance but also remain soft at different ambient temperatures, preventing the cushion sleeve 5 from cracking due to hardening and embrittlement. The nylon PA610 material also has excellent wear resistance, even in the case of frequent disassembly and assembly or long-term use, keeping the nut 32 and the mounting plate 2 isolated.

[0025] An opening 22 for inserting the stud 31 is provided on one side of the mounting hole 21. In the traditional mounting method, the stud 31 is usually inserted into the mounting hole 21 from one end of the mounting plate 2, which is difficult to operate in some cases where the space is limited or some components have been pre-installed. By designing the opening 22, the mounting plate 2 can be directly inserted into the stud 31 from the side without completely disassembling or significantly moving other components on the mounting plate 2, which greatly facilitates the installation and maintenance work.

Claims

1. An insulating base box, comprising a box body (1), the bottom surface of the box body (1) having a bottom plate (11), a mounting plate (2) being arranged above the bottom plate (11), characterized in that: A plurality of fixing members (3) connected to the mounting plate (2) are fixed on the bottom plate (11); a mounting hole (21) for the fixing member (3) to pass through is provided on the mounting plate (2); an insulating sleeve (4) and a gasket (5) are provided on the outer cover of the fixing member (3); the insulating sleeve (4) is located between the bottom plate (11) and the mounting plate (2); the bottom surface and the top surface of the insulating sleeve (4) are in contact with the bottom plate (11) and the gasket (5) respectively; the gasket (5) is placed in the mounting hole (21) to isolate the mounting hole (21) from contact with the fixing member (3).

2. The insulating base box according to claim 1, characterized in that: The fixing member (3) comprises a stud (31) and a nut (32); the washer (5) comprises a cushioning portion (51) and an inner sleeve portion (52); the inner sleeve portion (52) is located between the stud (31) and the mounting hole (21); the cushioning portion (51) is located above the inner sleeve portion (52) and extends out in a radial direction; the cushioning portion (51) is cushioned between the nut (32) and the top surface of the mounting plate (2).

3. The insulating base box according to claim 1 or 2, characterized in that: The insulating sleeve (4) is made of nylon material.

4. The insulating base box according to claim 1 or 2, characterized in that: The cushion cover (5) is made of nylon material.

5. The insulating base box according to claim 2, characterized in that: An opening (22) for inserting a stud (31) is provided extending from one side of the mounting hole (21).

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