Enclosed high power metal resistor

By incorporating a heat-conducting element within a closed-type high-power metal resistor, the problem of low heat dissipation efficiency in closed-type high-power metal resistors is solved, achieving rapid heat dissipation and extended resistor lifespan.

CN224519600UActive Publication Date: 2026-07-17SHENZHEN ZENITHSUN ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ZENITHSUN ELECTRONICS TECH CO LTD
Filing Date
2025-07-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Enclosed high-power metal resistors have low heat dissipation efficiency, resulting in a shortened service life.

Method used

A heat dissipation element is set inside the metal casing of a closed high-power metal resistor to conduct the heat accumulated inside the resistor casing to the outside, thereby achieving rapid heat dissipation.

Benefits of technology

It improves the heat dissipation efficiency of enclosed high-power metal resistors, prevents foreign object intrusion, and extends the service life of resistors.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to high -power metal resistor etc. technical field provides a closed high -power metal resistor, and this resistor includes metal casing and heat accumulation export body, and the inside closed of metal casing is provided with resistance core, and the heat accumulation is formed in the shell when resistance core works. A part of heat accumulation export body sets up in the shell, as heat accumulation conduction part, is used to absorb and conduct the heat in the shell, another part extends to the shell outside, as heat accumulation export part, is used to release the heat to the shell outside environment. The closed high -power metal resistor can realize the efficient export and emission of the heat accumulation in the shell, need not open the heat dissipation hole on the metal casing, avoid the risk of foreign matter invasion, significantly improve the heat dissipation efficiency and structure sealing, be applicable to high -power sealed type metal resistor.
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Claims

1. A closed high power metal resistor, characterized by, include: A resistor metal housing, wherein a resistor core is disposed inside the closed cavity of the resistor metal housing, and the heat generated when the resistor core heats up accumulates inside the closed cavity, forming heat accumulation inside the resistor housing; A heat-collecting conductor is connected to the resistor metal housing. A portion of the heat-collecting conductor is located inside the closed cavity of the resistor metal housing to form a heat-conducting part, and another portion of the heat-collecting conductor is located outside the closed cavity of the resistor metal housing to form a heat-collecting outlet part. The heat conduction section conducts the heat accumulated inside the resistor housing to the outside of the enclosed cavity, and dissipates it through the heat discharge section.

2. The enclosed high power metal resistor of claim 1, wherein, The heat extraction element is an end-insertion type heat extraction element. The portion of the heat extraction element located inside the closed cavity that forms the heat conduction section is one end of the end-insertion type heat extraction element, and the portion of the heat extraction element located outside the closed cavity that forms the heat extraction section is the other end of the end-insertion type heat extraction element.

3. The enclosed high power metal resistor of claim 2, wherein, The end-insertion heat sink is a single set of end-insertion heat sinks, which includes multiple end-insertion heat sinks. The multiple end-insertion heat sinks of the single set of end-insertion heat sinks are inserted into the closed cavity of the resistor metal housing from one side of the resistor metal housing.

4. The enclosed high power metal resistor of claim 2, wherein, The end-insertion heat sink is a multi-group of end-insertion heat sinks. Each group of end-insertion heat sinks includes multiple end-insertion heat sinks. The multiple end-insertion heat sinks in each group are inserted into the closed cavity of the resistor metal housing from different sides of the resistor metal housing.

5. The enclosed high power metal resistor of claim 2, wherein, The end-insertion heat sink is a multi-group end-insertion heat sink, and some of the multi-group end-insertion heat sinks include multiple end-insertion heat sinks, while others include a single end-insertion heat sink. Multiple end-inserted heat-generating elements in an end-inserted heat-generating element group containing multiple end-inserted heat-generating elements and a single end-inserted heat-generating element in an end-inserted heat-generating element group containing a single end-inserted heat-generating element are inserted into the closed cavity of the resistor metal housing from different sides.

6. The enclosed high power metal resistor of claim 1, wherein, The heat-collecting outlet is a through-type heat-collecting outlet. The part of the heat-collecting outlet located inside the closed cavity that forms the heat-conducting part is the main body of the through-type heat-collecting outlet. The part of the heat-collecting outlet located outside the closed cavity that forms the heat-collecting outlet is the two ends of the through-type heat-collecting outlet. The two ends of the through-type heat-collecting outlet are located at both ends of the main body of the through-type heat-collecting outlet.

7. The enclosed high-power metal resistor as described in claim 6, characterized in that, The through-type heat sink is a single set of through-type heat sinks, which includes multiple through-type heat sinks. The multiple through-type heat sinks of the single set of through-type heat sinks are inserted from one side of the resistor metal housing into the closed cavity of the resistor metal housing and penetrate the resistor metal housing.

8. The enclosed high-power metal resistor as described in claim 6, characterized in that, The through-type heat sink is a multi-group through-type heat sink, and each group of through-type heat sinks includes multiple through-type heat sinks. The multiple through-type heat sinks in each group are inserted into the closed cavity of the resistor metal housing from different parts of the resistor metal housing and penetrate the resistor metal housing.

9. The enclosed high power metal resistor of claim 6, wherein, The through-type heat sink is a group of multiple through-type heat sinks. Some groups of through-type heat sinks include multiple through-type heat sinks, and some groups include a single through-type heat sink. The multiple through-type heat sinks in the group containing multiple through-type heat sinks and the single through-type heat sink in the group containing a single through-type heat sink are inserted into the closed cavity of the resistor metal housing from different parts of the resistor metal housing and penetrate the resistor metal housing.

10. The enclosed high power metal resistor according to any one of claims 1 to 9, wherein The resistor metal housing is a cuboid, and the resistor core is distributed inside the cuboid along the length of the interior of the cuboid; the heat conduction part of the heat accumulating conductor located inside the closed cavity is separated from the resistor core by a predetermined distance to avoid direct contact with the resistor core.