BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical contact for use with an electrical connector connecting the CPU (Central Processing Unit) and the PCB (Printed Circuit Board), and particularly to the electrical contact essentially composed of two parts with different mechanical and electrical characteristics.
2. Description of Related Arts
China Patent No. CN208157699 discloses an electrical connector having a main body with opposite upper contacting arm and lower contacting for respectively connecting to the CPU and PCB wherein the free ends of the upper contacting arm and the lower contacting arm are connected together when the contact is in a compressed manner so as to result in the dual-path transmission between the CPU and PCB. Understandably, the contact is desired to have both the superior mechanical characteristic and electrical characteristic. Anyhow, a same material may not own both the mechanical resiliency characteristic and the electrical conduction characteristic.
- Therefore, it is desired to provide an electrical connector with corresponding contacts not only having the dual-path transmission but also owning both superior mechanical and electrical characteristics.
SUMMARY OF THE INVENTION
- To achieve the above object, an electrical contact for use with an electrical connector includes a conducting part and a supporting part wherein the conducting the part has a better conduction characteristic than the supporting part while the supporting part has a better resiliency/strength characteristic than the conducting part. The conducting part includes a main body, an upper contacting arm extending upwardly from the main body and a lower contacting arm extending downwardly from the main body. The supporting part includes a secondary body, an upper supporting arm upwardly extending from the secondary body and a lower supporting arm downwardly extend from the secondary body. The main body and the secondary body are engaged together securely. The end of the upper contacting arm and that of the upper supporting arm are engaged together while allowing a minor relative movement therebetween, and the end of the lower contacting arm and that of the lower supporting arm are engaged together while allowing a minor relative movement therebetween. Each of the conducting part and the supporting part provides both electrical and mechanical functions wherein the conducting part provides a shorter transmission path than the supporting part for electrical consideration while the supporting part provides a longer curved resiliency path than the conducting part for mechanical consideration.
Other advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of an electrical contact according to a first embodiment of the invention;
FIG. 2 is another perspective view of the electrical contact of FIG. 1;
FIG. 3 is an exploded perspective view of the electrical contact of FIG. 1;
FIG. 4 is another exploded perspective view of the electrical contact of FIG. 3;
FIG. 5 is a side view of the electrical contact of FIG. 1;
FIG. 6 is cross-sectional view of the electrical contact of FIG. 1;
FIG. 7 is a perspective view of the electrical contact according to a second embodiment of the invention;
FIG. 8 is another perspective view of the electrical contact of FIG. 7;
FIG. 9 is a side view of the electrical contact of FIG. 7; and
FIG. 10 is a cross-sectional view of the electrical contact of FIG. 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 1-6, the contact 100 for connecting between the CPU and the PCB, includes a conducting part 1 having better conductivity, and a supporting part 2 having better strength/resiliency. The conducting part 1 includes a main body 10, an upper contacting arm 11 extending upwardly and obliquely from an upper end of the main body 10, and a lower contacting arm 12 downwardly and obliquely from a lower end of the main body 10. The supporting part 12 includes a secondary body 20, an upper supporting arm 21 extending curvedly upwardly and obliquely from an upper end of the secondary body 20, and a lower supporting arm 22 extending curvedly downwardly and obliquely from a lower end of the secondary body 20. The main body 10 and the secondary body 20 are attached together. Both the upper supporting arm 21 and the lower supporting arm 22 extend with a check mark configuration in a mirror image so as to have the supporting part 2 have a W-like configuration in a side view. Differently, the conducting part 1 has a gutter like structure in a side view.
The upper contacting arm 11 includes an upper contacting section 110, for connecting the CPU, against which the end of the upper supporting arm 21 abuts. Similarly, the lower contacting arm 12 includes a lower contacting section 120, for connecting the PCB, against which the end of the lower supporting arm 22 abuts. Notably, the contacting section 110, 120 is essentially narrower than other portions of the contacting arm 11, 12 for impedance consistency consideration during mating, thus inevitably being weakened structurally. In this invention, the end of the supporting arm 21, 22 supportably abuts against the corresponding contacting section 110, 120 to resist the stress thereof for preventing structural yielding of the narrower contacting section 110, 120. The secondary body 20 forms barbs 201 on two lateral sides for retaining the contact 100 in the housing of the connector (not shown).
Referring to FIGS. 3-5, the upper contacting arm 11 includes an oblique section 111 and the upper contacting section 110 extends backwardly from the end of the oblique section 111. Similarly, the lower contacting arm 12 includes an oblique section 121 and the lower contacting section 120 extends backwardly from the end of the oblique section 121. Therefore, the whole conducting part 1 has the aforementioned gutter like structure in a side view. Differently, the upper supporting arm 21 includes a first portion 211 extending in a first transverse direction and a second portion 212 extending in a second transverse direction opposite to the first direction. Similarly, the lower supporting arm 22 includes a first portion 221 extending in the first transverse direction and a second portion 222 extending in the second transverse direction. Therefore, the whole supporting part 2 has the aforementioned W like structure in the side view.
As shown in FIG. 6, the secondary body 20 forms a retaining block 202 to be received within the retaining hole 101 formed in the main body 10 so as to secure the conducting part 1 and the supporting part 2 together. As shown in FIG. 5, the main body 10 forms a plurality of V-grooves 102 for increasing resiliency thereof wherein the two V-grooves 102 are respectively located at conjunctions between the main body 10 and the contacting arms 11, 12, respectively in the first embodiment. Differently, as shown in FIG. 9, only one V-groove 102 may be formed in the middle of the main body 10 alternately in the second embodiment.
In brief, the hybrid type contact in the invention may provide both better electrical performance and mechanical performance by the relatively shorter transmission path, from the electrical viewpoint, derived from the conducting part 1 having the better conductivity thereof, and by the relatively longer deflection path, from the mechanical viewpoint, derived from the supporting part having the better strength/strength thereof.
Although the present invention has been described with reference to particular embodiments, it is not to be construed as being limited thereto. Various alterations and modifications can be made to the embodiments without in any way departing from the scope or spirit of the present invention as defined in the appended claims.
Patent Grant
11581675
