BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector, particularly to an electrical connector defined a screw member in two ends thereof.
2. Description of the Prior Art
A conventional electrical connector for connecting hard desk to a chip modules is disclosed in FIGS. 1-2. The electrical connector generally disposes a pair of screw members on two ends thereof for connecting with a printed circuit board. The electrical connector comprises an insulative housing. Due to the inferior intensity and anti-friction effect of the insulative material inherent, the housing always is inserted in a metal screw member for improving the using performance and the life span. The housing usually engages with the screw members by interfering ribs. Referring to the FIG. 1-2, the electrical connector comprises an insulative housing 1′, a cover 2′ mounted on the housing 1′, a plurality of terminals 3′ received in the housing 1′, a securing member 4′ and a screw member 5′ disposed on two ends of the housing 1′ for connecting the housing 1′ to the printed circuit board. The housing 1′ comprises an upper surface 11′, a recess 12′ indented in the upper surface 11′ comprising a first recess 121′, a second recess 122′ and a third recess 123′, a triangle rib 13′ extending from a sidewall of the second recess 122′. The screw member 5′ imbeds in the recess 12′ with engaging interferentially with the triangle rib 13′. However, the screw member 5′ engages interferentially with the recess 12′ and a top end of the triangle rib 13′ is coplanar with an upper surface 11′ of the housing 1′, which can make that the screw member 5′ is difficultly inserted into the recess 12′ of the housing 1′ and decrease the efficacy of the assembly of the electrical connector.
BRIEF SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical connector able to simplify a process of imbedding screw members into the recesses.
An electrical connector in according with the prefer embodiment of the present invention comprises a housing, a cover mounted on the housing, a plurality of terminals received in the housing, a pair of screw members mounted on two ends of the housing for connecting the housing to a printed circuit board. The housing defines a upper surface and a pair of recesses on two ends thereof for receiving the screw members, each recess at least defines a pair of triangle ribs for engaging interferentially with the screw members, the triangle rib defines a top surface lower than the upper surface of the housing.
Relative to the present technology, the electrical connector in accordance with the prefer embodiment of the invention. The triangle rib with a inclined surface ensure the screw member accurately imbedded in the housing and provide a prepress effect, which can simplify the assembling process and decrease the assembling time.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of a preferred embodiment when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an isometric view of a conventional electrical connector wherein a screw member is not inserted into a housing;
FIG. 2 is a magnified view of a circle A of the electrical connector described in FIG. 1;
FIG. 3 is an isometric view of an electrical connector in accordance with the preferred embodiment of the invention, wherein a screw member is not inserted into a housing thereof;
FIG. 4 a magnified view of a circle A of the electrical connector described in FIG. 3;
FIG. 5 is an assembled view of the electrical connector described in FIG. 4;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 3-5, an electrical connector comprises a housing 1, a cover 2 mounted on the housing 1, a plurality of terminals 3 received in the housing 1 and a screw member 5 imbedded in the housing 1 for connecting the electrical connector to the printed circuit board. The housing 1 defines an upper surface 11, a recess 12 indented inwardly from the upper surface and a triangle rib 13 protruding on an inner wall of the recess 12. The recess 12 comprises a front section 121, a central section 122 and a distal section 123, wherein the front section 121 and the distal section 123 cooperatively from an U-shaped configuration and the central section 122 is indented deeper than the front section 121 and the distal section 123. In addition the central section 122 comprises a slant surface connecting with the upper surface 11 on each sidewall thereof, a rectangular-shaped bottom surface, a pair of triangle rib 13 extending from an inner wall of the central section 122 and defines a slant top surface on an end adjacent to the upper surface 11 and lower than the upper surface 11. One point of the top slant surface engaging with screw member 5 is lower than the other two point of the top slant surface in an inserting direction, and the two lower points can be coplanar with or lower than the upper surface 11 of the housing 1.
The screw member 5 for receiving a screw therein comprises a column section 51 and a four-side section 52, wherein the four-side section defines 51 a slant surface on each corner thereof for conveniently engaging with the triangle ribs 13.
Referring also to FIG. 5, each terminal 3 received in the housing 1 comprises a tail extending through a passageway of the cover for connecting the cover 2 to the housing 1. The metal screw member 5 imbedded in the recess 12 by engaging interferential with the triangle rib 13. During the mounting the screw member 5 on the housing 1, the column section 51 of the screw member 5 is inserted in the front recess 121 of the housing 1, the rectangular section 52 is inserted in the central recess 122, the triangle rib 13 can locate and prepress the screw member 5 inserting into the housing 1, hence a preferred force can make the screw member 5 mounted in the recess 12 for realizing a simplified engagement between the screw member 5 and the housing 1.
Referring to the FIG. 5, as a improvement of the invention, the housing 1 disposes a pair of elongate channel for receiving the locking member 4 on two ends thereof, which can enforce the engagement between the electrical connector and the printed circuit board.
It will be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not be limited to the details given herein.
Patent Application
20070149039
