Screw-connection-type diode for automobile generator

A technology for automotive generators and diodes, applied in the field of diodes, to achieve the effects of reducing failure modes, preventing falling off, and protecting safety

Active Publication Date: 2014-07-30
JIANGSU YUNYI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the two failure modes of the existing press-fit rectifier diodes for automobile generators caused by extrusion assembly, and to provide a screw-on diode for automobile generators
The screw-on diode effectively avoids the assembly stress of damaging the chip and solves the problem of diode assembly falling off, greatly improving the reliability of rectifiers and automobile generators and the safety of driving

Method used

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  • Screw-connection-type diode for automobile generator
  • Screw-connection-type diode for automobile generator
  • Screw-connection-type diode for automobile generator

Examples

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Embodiment Construction

[0015] refer to figure 1 , figure 2 with image 3 Among them, the present invention consists of a base 4, a chip 3, a lead 1, and a sealant 2. A polygon is provided on half of the outer surface of the diode base 4, and a threaded structure is provided on the cylindrical surface of the lower half of the base 4. The diode passes through The threaded structure of the base 4 is connected with the cooling plate of the rectifier. The connection method described is a screw-in type. The polygon is a hexagon. The connection between the threaded structure and the heat sink of the rectifier can absorb expansion stress and relieve vibration through thread fit gaps.

[0016] The working process is as follows: when making the diode base 4, put the oxygen-free copper rod into the cold heading mold for upsetting and pressing to form a structure with a hexagonal upper part and a cylindrical lower part, and then use an automatic thread rolling machine to process the thread A complete bas...

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PUM

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Abstract

The invention relates to a screw-connection-type diode for an automobile generator. The diode is composed of a base, a chip, a straight lead and sealants and is characterized in that a polygon is arranged on the upper half portion of the outer surface of the base of the diode, a threaded structure is arranged on the cylindrical surface of the lower half portion of the base, and the diode is connected with a heat dissipation plate of a rectifier through the threaded structure of the base. The screw-connection-type diode for the automobile generator effectively has the advantages of effectively avoiding assembly stress which may damage a chip, solving the disengaging problem of the diode in the assembly process and greatly improving the reliability and the traveling safety of the rectifier and the automobile generator.

Description

technical field [0001] The invention relates to a diode, in particular to a screw-on diode for an automobile generator. Background technique [0002] Existing press-fit rectifier diodes for automotive generators are all straight-lead rectifier diodes, and their structure is mainly composed of a base, a chip, a straight lead, a protective ring, and a sealant. The material of the base is oxygen-free copper, the appearance is cylindrical, and the surface is distributed with axial teeth. Usually, the diode is assembled on the rectifier of the automobile generator, and its lead wire is welded to the rectifier bracket. During the actual production and assembly of rectifiers and the use of generators, two failure modes often occur: first, the diode is squeezed into the heat sink due to excessive force, causing the internal chip of the diode to rupture and fail; second, the diode is squeezed into the heat sink When the board is under too little force, the diode falls off from the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/13H01L29/861
CPCH01L24/01
Inventor 黄永
Owner JIANGSU YUNYI ELECTRIC
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