CN202332821U

CN202332821U - Package body of rectifier bridge

Info

Publication number: CN202332821U
Application number: CN2011204525439U
Authority: CN
Inventors: 王双
Original assignee: Yangzhou Yangjie Electronic Co Ltd
Current assignee: Yangzhou Yangjie Electronic Co Ltd
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2012-07-11
Anticipated expiration: 2021-11-16

Abstract

The utility model relates to an improvement in a package body structure of a rectifier bridge. The utility model provides a package body of the rectifier bridge capable of prolonging the creepage distance, furthermore to meet the high insulation requirements. The back surface of the package body is a radiation surface, one surface of the package body through which a rectifier bridge pin extends out is the bottom surface of the package body and a portion on the bottom surface from the root of the pin to the bottom edge of the back surface is a stepped surface. The back portion (namely the portion from the root of the pin to the bottom edge of the back surface) on the bottom surface of the package body is changed into the stepped surface and viewed from the cross section, the distance between the root of the pin and the bottom edge of the back surface is prolonged, namely the 'creepage distance' is prolonged and in the same application environment, the voltage withstanding level of the products is greatly increased and the insulation performance is also increased.

Description

The packaging body of rectifier bridge heap

Technical field

The utility model relates to the improvement to rectifier bridge heap package body structure.

Background technology

At present, to be designed between pin and the radiating surface generally be planar shaped to rectifier bridge heap packaging body body.As shown in Figure 3, the rear portion, bottom surface 111 of packaging body body 1 is a flat shape.Because packaging body adopts the insulation material to make, and can between pin and radiator, form certain insulation effect.But in use,, then " creepage " phenomenon between pin to the radiator occurs, can cause the rectifier bridge heap to lose efficacy through regular meeting like spread of voltage (increasing).The creepage distance that just forms on the rectifier bridge heap cross section, rear section, bottom surface in the prior art can't satisfy the requirement of high insulating property.

The utility model content

The utility model provides a kind of prolongation creepage distance to above problem, and then can satisfy the packaging body of the rectifier bridge heap of high-insulativity requirement.

The technical scheme of the utility model is: the back side of said packaging body body is radiating surface, and the one side that said packaging body stretches out said rectifier bridge heap pin is the bottom surface, and the part from said pin root to said back side hemline on said bottom surface is a cascaded surface.

The utility model is improved to cascaded surface with the rear section (from the part of pin root to back side hemline) of packaging body bottom surface; See from the cross section and to be equivalent to having prolonged from the distance between the hemline of pin root to the back side; In other words also just prolonged " creepage path "; In same environment for use, can improve the voltage withstand class of product greatly, increase insulation property.

Description of drawings

Fig. 1 is the structural representation of the utility model,

Fig. 2 is a K place partial enlarged drawing among Fig. 1,

Fig. 3 is the structural representation of the utility model background technology;

1 is the packaging body body among the figure, the 11st, and the back side, the 110th, cascaded surface, the 111st, plane, the 2nd, pin, the 3rd, radiator.

Embodiment

The utility model is like Fig. 1, shown in 2; The back side 11 of packaging body 1 body is the radiating surface of the radiator 3 that is used to fit; The one side that said packaging body 1 stretches out said rectifier bridge heap pin 2 is the bottom surface, and the part from said pin 2 roots to the said back side 11 hemlines on said bottom surface is a cascaded surface 110.

Making the utility model product is, when plastic packaging, improves mould, can change the plastic packaging shape.

Claims

1. the packaging body of rectifier bridge heap; The back side of said packaging body body is radiating surface; The one side that said packaging body stretches out said rectifier bridge heap pin is the bottom surface, it is characterized in that the part from said pin root to said back side hemline on said bottom surface is a cascaded surface.