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An electrical connector for connecting a sheet-like member includes a housing (1) defining an insertion slot (10); a plurality of terminals (2) arranged in the housing in parallel relationship with a predetermined pitch, each of the terminals having a contact beam (22) extending into the insertion s

An electrical connector for connecting a sheet-like member includes a housing (1) defining an insertion slot (10); a plurality of terminals (2) arranged in the housing in parallel relationship with a predetermined pitch, each of the terminals having a contact beam (22) extending into the insertion slot and a pivot beam (21) extending substantially parallel to the contact beam; and an actuator (3) rotatably provided for establishing an electrical connection between the sheet-like member and the contact beams. The actuator provides cam portions (31) each interposed between every other the pivot beam. Each of the cam portions provides shaft portions (32) respectively adapted for pivotably engaging with the pivot beams disposed therebeside. The shaft portions extending towards each other respectively from two adjacent cam portions are spaced to define a gap (33) therebetween.

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What is claimed is: 1. An electrical connector for connecting a sheet-like member, comprising: a housing defining an insertion slot for receiving the sheet-like member; a plurality of terminals arranged in the housing in parallel relationship with a predetermined pitch, each of the terminals having

What is claimed is: 1. An electrical connector for connecting a sheet-like member, comprising: a housing defining an insertion slot for receiving the sheet-like member; a plurality of terminals arranged in the housing in parallel relationship with a predetermined pitch, each of the terminals having a contact beam extending into the insertion slot and a pivot beam extending substantially parallel to the contact beam; and an actuator rotatably provided for establishing an electrical connection between the sheet-like member and the contact beams, said actuator providing cam portions each interposed between every other said pivot beam, each of the cam portions providing shaft portions respectively adapted for pivotably engaging with the pivot beams disposed therebeside, the shaft portions extending towards each other respectively from two adjacent cam portions being spaced and defining a gap therebetween, wherein the housing provides finger portions extending forwards into the insertion slot and interposed between every other said pivot beams without said cam portion interposed therebetween and the finger portion further extends into the gap between the shaft portions. 2. The electrical connector as described in claim 1, wherein each of the shaft portions has a substantially round cross section, and the cam portions engage with the sheet-like member whereas the shaft portions do not engage with the sheet-like member. 3. The electrical connector as described in claim 1, wherein each of the shaft portions has a substantially oval cross section, and both the cam portions and the shaft portions engage with the sheet-like member. 4. The electrical connector as described in claim 1, wherein the pivot beams extending into the insertion slot and each defines a concave portion at a tip end portion thereof, and the shaft portion is pivotably accommodated in the concave portion and prevented from forward movement. 5. The electrical connector as described in claim 1, wherein at least one of the finger portions defines a convex top surface, and the actuator correspondingly provides a cam follower slideable on the convex top surface. 6. The electrical connector as described in claim 1, wherein each of the finger portions is formed with an enlarged head, and the shaft member is supported behind said enlarged head from forward movement and below the pivot beam from upward movement. 7. The electrical connector as described in claim 6, wherein the enlarged head defines a pair of recesses for respectively receiving tips of said pivot beams disposed therebeside. 8. The electrical connector as described in claim 6, wherein the pivot beam has a top surface upwardly exposed to exterior but not shielded by the housing and the contact beam has a bottom surface downwardly exposed to exterior but not shielded by the housing. 9. The electrical connector as described in claim 8, wherein the terminal has a retaining protuberance sideward protruding therefrom adapted to be set in the housing so as to prevent the terminal from upward or downward rotation. 10. The electrical connector as described in claim 4, wherein the concave portion is on a lower edge of the tip end portion of the pivot beam. 11. The electrical connector as described in claim 1, wherein the actuator is provide with a pair of deflectable latches and the housing is provided a pair of retention recesses, the latch formed with a protuberance retainable in the retention recess. 12. An electrical connector comprising: an insulative housing defining an insertion slot along a longitudinal direction for receiving a sheet-like electronic member; a plurality of terminals disposed in the housing and including a plurality of contact beams on one side of the insertion slot for engagement with the corresponding sheet-like electronic member; a plurality of pivot beams located on another side of the insertion slot opposite to said contact beams; and an actuator rotatably mounted to the housing and defining a plurality of spaced cam portions for pressing the sheet-like electronic member, each of said cam portions being equipped with a pair of the shaft portions respectively extending oppositely from two opposite sides thereof; each cam portion interposed between two corresponding neighboring pivot beams, and every two neighboring shaft portions extending towards each other respectively from two adjacent cam portions and being spaced from each other with therebetween a gap without any portions of said actuator disposed in said gap, wherein said every two neighboring shaft portions engage said two corresponding pivot beams, respectively. 13. The electrical connector as described in claim 12, wherein the housing provides finger portions extending into the insertion slot and interposed between every said corresponding pivot beams without said cam portion interposed therebetween. 14. The electrical connector as described in claim 13, wherein the finger portion further extends into the gap between the shaft portions. 15. An electrical connector for connecting a sheet-like member, comprising: a housing defining an insertion slot for receiving the sheet-like member; a plurality of terminals arranged in the housing in parallel relationship with a predetermined pitch, each of the terminals having a contact beam extending into the insertion slot and a pivot beam extending substantially parallel to the contact beam; and an actuator rotatably provided for establishing an electrical connection between the sheet-like member and the contact beams, said actuator providing cam portions each interposed between every other said pivot beam, each of the cam portions providing shaft portions respectively adapted for pivotably engaging with the pivot beams disposed therebeside, the shaft portions extending towards each other respectively from two adjacent cam portions being spaced and defining a gap therebetween, wherein the housing provides finger portions extending forwards into the insertion slot and interposed between every other side pivot beams without said cam portion interposed therebetween; wherein each of the finger portions is formed with an enlarged head, and the shaft member is supported behind said enlarged head from forward movement and below the pivot beam from upward movement. 16. The electrical connector as described in claim 15, wherein the enlarged head defines a pair of recesses for respectively receiving tips of said pivot beams disposed therebeside. 17. The electrical connector as described in claim 15, wherein the pivot beam has a top surface upwardly exposed to exterior but not shielded by the housing and the contact beam has a bottom surface downwardly exposed to exterior but not shielded by the housing. 18. The electrical connector as described in claim 17, wherein the terminal has a retaining protuberance sideward protruding therefrom adapted to be set in the housing so as to prevent the terminal from upward or downward rotation.