An ultra-thin aluminum shell resistor

Abstract

The utility model provides an ultra -thin type aluminum shell resistance relates to resistance field, this ultra -thin type aluminum shell resistance, including aluminum shell, resistance core and packaging material, the resistance core adopts the packaging material and is packed in the aluminum shell inside, and there is the packaging material isolation between resistance core conductive part and aluminum shell, the upper surface of aluminum shell has strip shape radiating tooth, the packaging material has the characteristics of high temperature resistance and high dielectric strength, the resistance core includes ceramic substrate, lead -out wire, spring -like resistance wire, riveting terminal, the ceramic substrate upper surface has a few S shape grooves. This ultra -thin type aluminum shell resistance, through the new design resistance, physical structure is relatively thin, is suitable for installing in the application occasion of limited space, heating wire and aluminum shell cooperate closely, and heating wire is evenly distributed, so this kind of resistance structure has better heat dissipation performance, and this resistance installation mode can be patch type installation and can be screw fixed installation, also can be fixed to the heat dissipation plate.

Description

Technical Field

[0001] This utility model relates to the field of resistor technology, specifically to an ultra-thin aluminum-cased resistor. Background Technology

[0002] Aluminum-cased resistors are power resistors with an aluminum casing as their core packaging structure. They combine high heat dissipation efficiency, durability, and compact design, and are widely used in electronic circuits that require stable high power dissipation.

[0003] The aluminum casing is made of high thermal conductivity aluminum alloy (such as 6063 aluminum), formed by die casting or stamping, and the surface is often anodized to enhance corrosion resistance. The core resistor is mostly made of alloy material and is tightly bonded to the aluminum casing through an insulating thermally conductive medium.

[0004] In applications such as power supplies, industrial equipment, automotive electronics, and power modules, where efficient heat dissipation and compact design are required, high-power, small-size resistors are needed to handle large currents while keeping the temperature from getting too high. Utility Model Content

[0005] The purpose of this invention is to provide an ultra-thin aluminum-cased resistor. The resistor has a relatively thin physical structure, making it suitable for installation in applications with limited space. The heating wire fits tightly with the aluminum casing, and the heating wire is evenly distributed, so this resistor structure has good heat dissipation performance.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an ultra-thin aluminum-cased resistor, comprising an aluminum casing, a resistor core, and a packaging material. The resistor core is encapsulated inside the aluminum casing using the packaging material, and the conductive part of the resistor core is isolated from the aluminum casing by the packaging material. The upper surface of the aluminum casing has strip-shaped heat dissipation teeth, and the packaging material has the characteristics of high temperature resistance and high dielectric strength.

[0008] Furthermore, the resistor core includes a ceramic substrate, lead wires, spring-shaped resistance wires, and riveting terminals. The upper surface of the ceramic substrate has several S-shaped grooves, and the spring-shaped resistance wires are installed in the grooves of the ceramic substrate. The grooves of the ceramic substrate have wire outlet slots at both ends. The spring-shaped resistance wires are connected to the lead wires through the riveting terminals and are led out from the wire outlet slots. The upper surface of the aluminum shell has strip-shaped heat dissipation teeth, and the aluminum shell is open at both ends. The lead wires are led out from one end of the aluminum shell.

[0009] Furthermore, the spring-shaped resistance wire is made of alloy material and wound into a spring shape.

[0010] Furthermore, the ceramic substrate has an S-shaped groove, and a spring-shaped resistance wire is embedded in the S-shaped groove of the ceramic substrate. There are two inlet and outlet ports at both ends of the S-shaped groove. The resistance lead wire is led out from the groove, and the riveting terminal is locked in the slot of the ceramic substrate to prevent the resistance wire from being pulled out of the S-shaped groove.

[0011] Furthermore, the ceramic substrate is made of aluminum oxide.

[0012] Furthermore, after the resistance wire is placed in the S-shaped groove of the alumina ceramic substrate, insulating slurry is filled in, and then the ceramic substrate is vibrated to compact the slurry. After air drying for 2-3 hours, the solidified resistance core is placed into the aluminum shell, insulating material is filled in, and it is air dried and baked a second time.

[0013] This invention provides an ultra-thin aluminum-cased resistor. It has the following advantages:

[0014] This ultra-thin aluminum-cased resistor features a newly designed, thin physical structure, making it suitable for applications with limited space. The heating wire fits tightly into the aluminum casing, and the heating wire is evenly distributed, resulting in excellent heat dissipation. This resistor can be mounted via surface mount, screw mounting, or fixed to a heat sink. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the resistor core of this utility model;

[0016] Fig. 2 This is a schematic diagram of the resistor package of this utility model.

[0017] The components include: 1. ceramic substrate, 2. lead wire, 3. spring-shaped resistance wire, 4. riveting terminal, 5. resistance core, 6. packaging material, and 7. aluminum shell. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figs. 1-2As shown, this embodiment of the present invention provides an ultra-thin aluminum-cased resistor, comprising an aluminum casing 7, a resistor core 5, and a packaging material 6. The resistor core 5 is encapsulated inside the aluminum casing 7 by the packaging material 6, and the conductive part of the resistor core 5 is isolated from the aluminum casing 7 by the packaging material 6. The upper surface of the aluminum casing 7 has strip-shaped heat dissipation teeth. The packaging material 6 has the characteristics of high temperature resistance and high dielectric strength. The resistor core 5 includes a ceramic substrate 1, lead wires 2, spring-shaped resistance wires 3, and riveting terminals 4. The upper surface of the ceramic substrate 1 has several S-shaped grooves. The spring-shaped resistance wires 3 are made of alloy material and wound into a spring shape. The ceramic substrate 1 has an S-shaped groove, and the spring-shaped resistance wire 3 is embedded in the S-shaped groove of the ceramic substrate 1. There are two inlet and outlet ports at both ends of the S-shaped groove, and the resistance lead wire 2 is led out from the groove. The ceramic substrate 1 is made of aluminum oxide material. The spring-shaped resistance wire 3 is installed in the groove of the ceramic substrate. There are outlet slots at both ends of the groove of the ceramic substrate 1. The spring-shaped resistance wire 3 is connected to the lead wire 2 through the riveting terminal 4 and is led out from the outlet slot. The upper surface of the aluminum shell 7 has strip-shaped heat dissipation teeth. The aluminum shell 7 is open at both ends, and the lead wire 2 is led out from one end of the aluminum shell 7.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultra-thin aluminum-cased resistor, comprising an aluminum casing (7), a resistor core (5), and a packaging material (6), characterized in that: The resistor core (5) is encapsulated in the aluminum shell (7) with encapsulation material (6), and the conductive part of the resistor core (5) is isolated from the aluminum shell (7) by encapsulation material (6). The upper surface of the aluminum shell (7) has strip-shaped heat dissipation teeth. The encapsulation material (6) has the characteristics of high temperature resistance and high dielectric strength. The resistor core (5) includes a ceramic substrate (1), a lead wire (2), a spring-shaped resistance wire (3), and a riveting terminal (4). The upper surface of the ceramic substrate (1) has several S-shaped grooves. The spring-shaped resistance wire (3) is installed in the grooves of the ceramic substrate. The grooves of the ceramic substrate (1) have wire outlet slots at both ends. The spring-shaped resistance wire (3) is connected to the lead wire (2) through the riveting terminal (4) and is led out from the wire outlet slot. The upper surface of the aluminum shell (7) has strip-shaped heat dissipation teeth. The aluminum shell (7) has openings at both ends. The lead wire (2) is led out from one end of the aluminum shell (7). The spring-shaped resistance wire (3) is made of alloy material and wound into a spring shape. The ceramic substrate (1) has an S-shaped slot. The spring-shaped resistance wire (3) is embedded in the S-shaped slot of the ceramic substrate (1). The two ends of the S-shaped slot have two wire inlets and outlets. The lead wire (2) is led out from the slot. The ceramic substrate (1) is made of aluminum oxide material.

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