Box structure of inverter

Abstract

The utility model discloses an inverter box body structure, which has the advantage of lower production cost, solves the problem of higher production cost caused by the adoption of conductive sealant in the conventional inverter, and comprises a metal box body and a metal upper cover, the metal box body is provided with an opening, the metal upper cover is arranged at the position of the opening of the cavity and can open or close the opening, sealing foam is arranged between the metal box body and the metal upper cover, and the position of the opening of the metal box body extends outwards in the circumferential direction of the opening to form an extending plate. The inverter is sealed by the structure of the sealing foam embedded with the spring, which is convenient to manufacture, instead of a conductive sealant, so that the effect of reducing the production cost of the inverter is achieved; the sealing foam and the spring are arranged, and the metal box body and the metal upper cover are contacted through pressure-bearing surfaces arranged at the upper end and the lower end of the spring or welded circular plates, so that the purpose of enhancing the conductivity of the sealing foam is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of inverter boxes, in particular to an inverter box structure. Background Art

[0002] The main body of the inverter is the inverter circuit, in addition to control, protection, and filtering circuits. The inverter is a DC to AC transformer, which is actually a voltage inversion process with the converter. It is widely used in office equipment, household appliances, or batteries. Inverters are mainly divided into two categories, one is divided according to the wave string properties, and the other is divided according to the source flow properties. The characteristics of the inverter are high conversion efficiency, fast startup, good safety performance, good physical properties, and strong load adaptability and stability.

[0003] A Chinese utility model patent, publication number: CN217545889U, is an EMC shielding structure of an energy storage inverter box, comprising: an inverter housing, a shielding plate structure is installed inside the inverter housing, and a first cavity is opened on one side of the shielding plate structure, and a second cavity is opened on the other side of the shielding plate structure, and the lower side of the shielding plate structure is fixed by a vertical baffle. Although the above patent has a good shielding effect, in actual use, conductive sealant is added when the inverter is sealed, but its manufacturing process is complicated, resulting in high production costs. Utility Model Content

[0004] The utility model aims to provide an inverter box structure, which has the advantage of low production cost and solves the problem of high production cost caused by the use of conductive sealant in the existing inverter.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inverter box structure, comprising a metal box and a metal upper cover, the metal box being a cavity structure with an opening at the upper end and a hollow interior, the metal upper cover being arranged at the opening of the cavity, and the opening can be opened or closed, a sealing foam is arranged between the metal box and the metal upper cover, the opening of the metal box extending outward along its circumferential direction to form an extension plate, a connecting plate matched with the extension plate is formed on the metal upper cover, a plurality of bolts are installed on the extension plate, and the plurality of bolts penetrate the connecting plate from bottom to top and are detachably connected with nuts; a plurality of springs are embedded and installed in the sealing foam, and pressure-bearing surfaces are arranged at the upper and lower ends of the springs, which are respectively in contact with the metal box and the metal upper cover, and the compression amount of the sealing foam is the same as the compression amount of the spring.

[0006] Preferably, the outer edge surfaces of the metal box body and the metal upper cover are sprayed with an insulating anti-rust layer.

[0007] Preferably, a signal shielding layer is sprayed on the outer edge surface of the insulating anti-rust layer.

[0008] Preferably, the sealing foam is provided with a plurality of circular holes for the bolts to pass through, and the sealing foam is provided with a plurality of grooves, and the plurality of grooves are evenly distributed in the circumferential direction of the sealing foam.

[0009] Preferably, circular plates are welded and installed at both upper and lower ends of the spring, the circular plates are embedded and installed in the sealing foam, and the outer sides of the circular plates are flush with the surface of the sealing foam.

[0010] Preferably, a glue layer is provided on the contact surface between the sealing foam and the metal box.

[0011] Preferably, the pressure-bearing surface is a smooth plane.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model provides an inverter box structure, which includes a metal box and a metal cover. The overall structure is simple and the design is reasonable. A sealing foam is arranged between the metal box and the metal cover, and a spring is embedded in the sealing foam. The structure of the sealing foam embedded spring that is easy to manufacture is used to replace the traditional conductive sealant to seal and conduct the inverter, thereby achieving the effect of reducing the production cost of the inverter. By arranging smooth pressure-bearing surfaces or welded circular plates at the upper and lower ends of the spring, the contact area between the spring and the metal box and the metal cover can be increased, thereby achieving the effect of enhancing the conductivity of the sealing foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the disassembly of the utility model;

[0016] Figure 3 It is a partial cross-section of the utility model;

[0017] Figure 4 For this utility model Figure 2 Schematic diagram of the structure of the middle sealing foam;

[0018] Figure 5 For this utility model Figure 4 Schematic diagram of the implementation of the middle spring;

[0019] Figure 6 For this utility model Figure 4 Another schematic diagram of the implementation of the middle spring;

[0020] Figure 7 For this utility model Figure 3 A magnified schematic diagram of the structure at center A;

[0021] Figure 8 For this utility model Figure 4 A magnified schematic diagram of the structure at B in the figure.

[0022] The reference numerals and names in the figures are as follows:

[0023] 1. Metal box; 101. Extension plate; 102. Bolt; 103. Glue layer; 2. Metal cover; 201. Connecting plate; 202. Nut; 3. Sealing foam; 301. Groove; 302. Round hole; 4. Spring; 401. Pressure-bearing surface; 402. Round plate; 5. Insulation and anti-rust layer; 6. Signal shielding layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the embodiments of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0027] See also Figures 1 to 8 The utility model provides an embodiment: an inverter box structure, including a metal box 1 and a metal cover 2, the metal box 1 is a cavity structure with an opening at the upper end and a hollow interior, the metal cover 2 is arranged at the opening of the cavity, and the opening can be opened or closed, a sealing foam 3 is arranged between the metal box 1 and the metal cover 2, the opening of the metal box 1 extends outward along its circumferential direction to form an extension plate 101, the metal cover 2 is formed with a connecting plate 201 adapted to the extension plate 101, a plurality of bolts 102 are installed on the extension plate 101, and the plurality of bolts 102 penetrate the connection plate 101 from bottom to top. The connecting plate 201 is detachably connected to the nut 202; a plurality of springs 4 are embedded in the sealing foam 3, and pressure-bearing surfaces 401 are provided at the upper and lower ends of the spring 4. The pressure-bearing surfaces 401 are smooth planes, and the pressure-bearing surfaces 401 are respectively in contact with the metal box body 1 and the metal upper cover 2. The compression amount of the sealing foam 3 is the same as the compression amount of the spring 4. The outer edge surfaces of the metal box body 1 and the metal upper cover 2 are sprayed with an insulating anti-rust layer 5, and the outer edge surfaces of the insulating anti-rust layer 5 are sprayed with a signal shielding layer 6. In specific implementation, the insulating anti-rust layer 5 and the signal shielding layer 6 are both common materials on the market, which are prior art and will not be elaborated here.

[0028] In another embodiment of the utility model, a plurality of circular holes 302 for the bolts 102 to pass through are provided on the sealing foam 3, and a plurality of grooves 301 are provided on the sealing foam 3, and the plurality of grooves 301 are evenly distributed in the circumferential direction of the sealing foam 3. Circular plates 402 are welded and installed at the upper and lower ends of the spring 4, and the circular plates 402 are embedded and installed in the sealing foam 3. The outer sides of the circular plates 402 are flush with the surface of the sealing foam 3, and the contact surface between the sealing foam 3 and the metal box 1 is provided with a glue layer 103.

[0029] Working principle: During operation of the utility model, an insulating anti-rust layer 5 is sprayed on the outer edge surfaces of the metal box 1, the extension plate 101, the metal cover 2 and the connecting plate 201, and then a signal shielding layer 6 is sprayed on the insulating anti-rust layer 5, and then a glue layer 103 is applied to the extension plate 101, and then a sealing foam 3 is covered on the glue layer 103, a plurality of bolts 102 are passed through the circular holes 302, and then the metal cover 2 is covered on the metal box 1, and then the metal box 1 and the metal cover 2 are locked by the nuts 202 to complete the installation, and the electrical connection between the metal box 1 and the metal cover 2 can be completed by the spring 4 embedded in the sealing foam 3, thereby completing the conductive connection between the metal box 1 and the metal cover 2.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An inverter box structure, comprising a metal box (1) and a metal upper cover (2), characterized in that: The metal box (1) is a cavity structure with an opening at the top and a hollow interior. The metal upper cover (2) is arranged at the opening of the cavity and can open or close the opening. A sealing foam (3) is arranged between the metal box (1) and the metal upper cover (2). The opening of the metal box (1) extends outward along its circumferential direction to form an extension plate (101). The metal upper cover (2) is formed with a connecting plate (201) adapted to the extension plate (101). The extension plate (101) is provided on the metal upper cover (2). 01) are installed with a plurality of bolts (102), and the plurality of bolts (102) penetrate the connecting plate (201) from bottom to top and are detachably connected with the nuts (202); a plurality of springs (4) are embedded and installed in the sealing foam (3), and the upper and lower ends of the springs (4) are provided with pressure-bearing surfaces (401), and the pressure-bearing surfaces (401) are respectively in contact with the metal box body (1) and the metal upper cover (2), and the compression amount of the sealing foam (3) is the same as the compression amount of the spring (4).

2. The inverter box structure according to claim 1, characterized in that: The outer edge surfaces of the metal box body (1) and the metal upper cover (2) are both sprayed with an insulating anti-rust layer (5).

3. The inverter box structure according to claim 2, characterized in that: The outer edge surface of the insulating anti-rust layer (5) is sprayed with a signal shielding layer (6).

4. The inverter box structure according to claim 1, characterized in that: The sealing foam (3) is provided with a plurality of circular holes (302) for the bolts (102) to pass through, and the sealing foam (3) is provided with a plurality of grooves (301), and the plurality of grooves (301) are evenly distributed in the circumferential direction of the sealing foam (3).

5. The inverter box structure according to claim 1, characterized in that: Circular plates (402) are welded and installed at both upper and lower ends of the spring (4), and the circular plates (402) are embedded and installed in the sealing foam (3), and the outer sides of the circular plates (402) are flush with the surface of the sealing foam (3).

6. The inverter box structure according to claim 1, characterized in that: The contact surface between the sealing foam (3) and the metal box (1) is provided with a glue layer (103).

7. The inverter box structure according to claim 1, characterized in that: The pressure-bearing surface (401) is a smooth plane.

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