Composite shell with square aluminum shell and plastic edge opening

Abstract

A composite shell of a square aluminum shell and a plastic edge opening comprises a shell body (1), the bottom of the shell body (1) is an aluminum plate shell (101), the top of the shell body (1) is a plastic shell (102), and the aluminum plate shell (101) and the plastic shell (102) are fixed through gluing. The heat conductivity coefficient of the aluminum plate shell (101) is high, the heat conduction capacity of the aluminum plate shell (101) is much higher than that of a plastic shell, the aluminum plate shell (101) is adopted on the lower portion of the square outer shell, the aluminum plate shell (101) makes contact with an equipment case, the effect of the strong heat dissipation effect of the aluminum plate shell (101) is achieved, and heat on the capacitor core can be rapidly conducted to a metal case and dissipated out. And the plastic shell (102) is still made of a plastic material, so that an external copper bar can be conveniently connected with the terminal, and the creepage danger caused by insufficient distance between the copper bar and the aluminum plate shell (101) is avoided. The upper part of the square shell is the plastic shell (102), and the lower part of the square shell is the aluminum plate shell (101), so that the advantages of two materials are comprehensively utilized.

Description

Technical Field

[0001] This utility model relates to the field of resonant capacitor technology, and in particular to a composite shell with a square aluminum shell and a plastic edge. Background Technology

[0002] Resonant capacitors are used in resonant circuits of industrial control equipment such as medium- and high-frequency induction heating equipment, welding machines, plasma cutting machines, and frequency converters. They typically have high voltage, large current, small capacitance, and moderate size. Most capacitors are encapsulated in a plastic shell with epoxy potting. In these applications, the resonant current is high, resulting in significant capacitor heat generation and temperature rise. The plastic shell material is a poor thermal conductor, making it difficult for the heat generated by the capacitor core to conduct to the outside environment. Over time, this affects the capacitor's lifespan and reliability. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present invention provides a composite shell with a square aluminum shell and a plastic edge.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A composite shell consisting of a square aluminum shell and a plastic edge includes a shell body 1, the bottom of which is an aluminum plate shell 101, and the top of which is a plastic shell 102. The aluminum plate shell 101 and the plastic shell 102 are fixed together by adhesive bonding.

[0006] This utility model also has the following additional technical features:

[0007] As a further specific optimization of the technical solution of this utility model: the outer dimension of the lower end of the plastic shell 102 and the inner dimension of the aluminum plate shell 101 form an interference fit, the lower end of the plastic shell 102 is sleeved on the upper end of the aluminum plate shell 101, and the connection is fixed by adhesive bonding.

[0008] As a further specific optimization of the technical solution of this utility model: the interior of both the aluminum plate shell 101 and the plastic shell 102 is hollow.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] The aluminum shell 101 of this invention has a high thermal conductivity, making its heat transfer capability much stronger than that of a plastic shell. The lower part of the square shell uses the aluminum shell 101, which contacts the equipment chassis, maximizing its heat dissipation effect and rapidly transferring heat from the capacitor core to the metal chassis for dissipation. The plastic shell 102 is also made of plastic, facilitating the connection between the external copper busbar and terminals and preventing creepage hazards caused by insufficient distance between the copper busbar and the aluminum shell 101. The outer dimensions of the lower end of the plastic shell 102 and the inner dimensions of the aluminum shell 101 form an interference fit, preventing glue overflow at the joint between the plastic shell 102 and the aluminum shell during capacitor production. This square shell, with a plastic shell 102 at the top and an aluminum shell 101 at the bottom, comprehensively utilizes the advantages of both materials. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a top view of the structure of this utility model.

[0013] Explanation of reference numerals in the attached drawings: outer shell 1; aluminum plate shell 101; plastic shell 102. Detailed Implementation

[0014] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0015] A composite shell consisting of a square aluminum shell and a plastic rim includes a shell body 1. The bottom of the shell body 1 is an aluminum plate shell 101 made of aluminum sheet, while the top of the shell body 1 is a plastic shell 102 made of plastic material. The aluminum plate shell 101 and the plastic shell 102 are bonded and fixed together with adhesive, ensuring the integrity and stability of the shell.

[0016] Furthermore, the lower outer dimension of the plastic shell 102 is designed to be slightly larger than the inner dimension of the aluminum shell 101, thus creating an interference fit. This design allows the lower end of the plastic shell 102 to fit snugly onto the upper end of the aluminum shell 101, with the two tightly joined together. To further enhance the strength of the connection, the joint is bonded and secured with adhesive, thereby ensuring the airtightness and durability of the shell.

[0017] Furthermore, both the aluminum shell 101 and the plastic shell 102 are designed with a hollow structure inside. This hollow design not only reduces the overall weight of the shell but also provides additional space for wiring or the installation of other internal components, thereby improving the practicality and flexibility of the shell.

[0018] The aluminum shell 101 has a higher thermal conductivity, making its heat transfer capability much stronger than that of the plastic shell. The lower part of the square outer shell uses the aluminum shell 101, which contacts the equipment chassis, maximizing its heat dissipation effect and rapidly transferring heat from the capacitor core to the metal chassis for dissipation. The plastic shell 102 is also made of plastic, facilitating the connection between the external copper busbar and terminals and preventing creepage hazards caused by insufficient distance between the copper busbar and the aluminum shell 101. The outer dimensions of the lower end of the plastic shell 102 form an interference fit with the inner dimensions of the aluminum shell 101, preventing glue overflow at the joint between the plastic shell 102 and the aluminum shell during capacitor production. This square outer shell, with a plastic shell 102 at the top and an aluminum shell 101 at the bottom, combines the advantages of both materials.

[0019] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

Claims

1. A composite shell consisting of a square aluminum shell and a plastic rim, characterized in that: It includes an outer shell body (1), the bottom of the outer shell body (1) is an aluminum plate shell (101), the top of the outer shell body (1) is a plastic shell (102), and the aluminum plate shell (101) and the plastic shell (102) are fixed together by adhesive bonding.

2. The composite shell with a square aluminum shell and a plastic rim as described in claim 1, characterized in that: The outer dimensions of the lower end of the plastic shell (102) and the inner dimensions of the aluminum plate shell (101) form an interference fit. The lower end of the plastic shell (102) is sleeved on the upper end of the aluminum plate shell (101), and the connection is fixed by adhesive bonding.

3. The composite shell with a square aluminum shell and a plastic rim as described in claim 1, characterized in that: The interiors of both the aluminum plate shell (101) and the plastic shell (102) are hollow.

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