Housing with extended creep and air-stretch

Abstract

The present invention relates to a housing ( 100 ) for receiving an electric component, comprising a hollow housing body ( 110 ) with an opening (OS) on one side, which is characterized by a bottom (B) underneath the opening (OS), a lid (D) above the opening (OS), and two side walls (AS 1 , AS 2 ) adjacent to the opening (OS), and at least two electric contacts ( 120 a to 120 f ) provided on the bottom (B) of the housing body ( 110 ) on opposite housing sides, wherein a first contact ( 120 a ) of the electric contacts ( 120 a to 120 f ) is situated in the region of the opening (OS).

What is claimed is: 
     
       1. Housing for receiving an electric component, comprising
 a hollow housing body having a length with an opening on one side and a closed rear wall on an opposing side, 
 a bottom underneath the opening, 
 a lid above the opening, 
 two side walls adjacent to the opening, 
 a connecting lead guiding device adjacent said lid, said connecting lead guiding device comprises an upper projection integrated with said lid and a lower projection integrated with said two side walls adjacent and extending parallel to said lid, and 
 at least two electric contacts provided on said bottom of said hollow housing body on opposite housing sides; 
 wherein a first contact of said at least two electric contacts is situated adjacent the opening and a second contact of said at least two electric contacts is situated adjacent the closed rear wall, 
 whereby an extension of a creepage distance is obtained and an air gap between said at least two electric contacts is maximized. 
 
     
     
       2. Housing according to  claim 1 , wherein the electric contacts project laterally out of the bottom and extend substantially parallel to the bottom. 
     
     
       3. Housing according to  claim 1 , wherein a rear wall of the housing on a rear side of the housing is curved. 
     
     
       4. Housing according to  claim 1 , wherein the electric contacts are SMD contact pins which are potted with the bottom of the housing body in an SMD grid dimension, and wherein the housing is an SMD housing for surface mounting on printed circuit boards. 
     
     
       5. Housing according to  claim 1 , wherein the housing body is a single-piece molded part. 
     
     
       6. Electric component comprising a housing according to  claim 1 , in which at least one coil is incorporated,
 wherein a first connecting lead of the at least one coil is electrically connected through the opening to the first contact of the electric contacts in the region of the opening, and 
 wherein a second connecting lead of the at least one coil is electrically connected through the opening to a second contact of the electric contacts in the region of the rear side of the housing. 
 
     
     
       7. Electric component according to  claim 6 , wherein the at least one coil is wound onto a core. 
     
     
       8. Electric component according to  claim 6 , wherein a hollow space of the housing body between the at least one coil and the opening is subject to the standards with regard to overvoltage and contamination categories. 
     
     
       9. Electric component according to  claim 2 , wherein the electric contacts are configured as through hole device contacts, wherein the through hole device contacts projecting laterally out of the bottom are kinked by an angle of about 90° so that they extend vertically to the bottom surface downstream of the kink. 
     
     
       10. Electric component according to  claim 4 , wherein a length of the component between the opening and the rear side of the housing is substantially equal to 9.5 mm and the component is designed for safety voltages, respectively, test voltages of up to 9.5 kV. 
     
     
       11. Housing for receiving an electric component, comprising:
 a hollow housing body having a length with an opening on one side and a closed rear wall on an opposing side, 
 a bottom underneath the opening, 
 a lid above the opening, 
 two side walls adjacent to the opening, 
 a connecting lead guiding device adjacent said lid, and 
 at least two electric contacts provided on said bottom of said hollow housing body on opposite housing sides; 
 wherein a first contact of said at least two electric contacts is situated adjacent the opening and a second contact of said at least two electric contacts is situated adjacent the closed rear wall, 
 wherein at least one of the two side walls includes said connecting lead guiding device to allow a lead to be fixed to the at least one of the two side walls from the opening towards a rear side of the housing situated opposite the opening, and 
 wherein said connecting lead guiding device comprises two projections running in parallel so as to define an enclosure for the lead, 
 whereby an extension of a creepage distance is obtained and an air gap between said at least two electric contacts is maximized. 
 
     
     
       12. Housing for receiving an electric component, comprising:
 a hollow housing body having a length with an opening on one side and a closed rear wall on an opposing side, 
 a bottom underneath the opening, 
 a lid above the opening, 
 two side walls adjacent to the opening, 
 a connecting lead guiding device adjacent said lid, and 
 at least two electric contacts provided on said bottom of said hollow housing body on opposite housing sides; 
 wherein a first contact of said at least two electric contacts is situated adjacent the opening and a second contact of said at least two electric contacts is situated adjacent the closed rear wall, 
 wherein two projections running in parallel extend from the opening, parallel to the lid, laterally between a center and three quarters of the adjacent side wall, and 
 wherein said connecting lead guiding device further comprises a shoulder which extends from an end of the projection, facing away from the opening, ramp-like in a direction of the rear side of the housing and the bottom so as to extend said connecting lead guiding device up to a second contact of the electric contacts in a region of the rear side of the housing, 
 whereby an extension of a creepage distance is obtained and an air gap between said at least two electric contacts is maximized. 
 
     
     
       13. A housing for receiving an electric component comprising:
 a housing body having an opening, an opposing closed rear wall, a bottom, a lid, and opposing adjacent side walls extending between the opening, the opposing closed rear wall, the bottom, and the lid; 
 an first electric contact adjacent the opposing closed rear wall; 
 a second electrical contact adjacent the opening; and 
 a connecting lead guide adjacent the lid and extending along a portion of at least one of the opposing adjacent side walls and ending at an intermediate portion between the opening and the opposing closed rear wall; said connecting lead guide comprises an upper projection integrated with the lid and a lower projection integrated with the at least one of the opposing adjacent side walls and extends parallel to the lid; and 
 a shoulder ramp inclined downward extending from the intermediate portion to said first electric contact adjacent the opposing closed rear wall, 
 whereby a connecting lead extending from the first electric contact may be placed on the shoulder ramp and within said connecting lead guide and enter the opening connecting with an electric component within the housing extending creepage distance. 
 
     
     
       14. Housing for receiving an electric component, comprising
 a hollow housing body having a length with an opening on one side and a closed rear wall on an opposing side; 
 a bottom underneath the opening; 
 a lid above the opening; 
 two side walls adjacent to the opening; 
 a guiding device comprising upper and lower projections for fixing connecting leads there between adjacent and parallel to said lid and extending from the opening to an intermediate location along the length of said hollow housing body, 
 a shoulder ramp inclined downwardly extending from the intermediate location to the closed rear wall adjacent said bottom, and 
 at least two electric contacts provided on said bottom of said hollow housing body on opposite housing sides; 
 wherein a first contact of said at least two electric contacts is situated adjacent the opening and a second contact of said at least two electric contacts is situated adjacent the closed rear wall, 
 whereby an extension of a creepage distance is obtained and an air gap between said at least two electric contacts is maximized.