Electrical circuit interrupting device |
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| 申请号 | US3602667D | 申请日 | 1969-08-28 | 公开(公告)号 | US3602667A | 公开(公告)日 | 1971-08-31 |
| 申请人 | SACHSENWERK LICHT & KRAFT AG; | 发明人 | REICHL ERWIN; SIEKIERA GUNTER; KINDLER HELMUT; | ||||
| 摘要 | An electrical switch including a first switch contact mounted at a point spaced in front of a support, and a second switch contact mounted on the support for movement from an on-position in which it engages the first contact to an off-position in which it is spaced to the rear of the second contact. One of the switch contacts has a quenching chamber connected to it which surrounds the space between the first and second contacts until they are separated by a sufficient distance so that arcing no longer occurs. The mounting means for the second switch contact moves the second contact first in a linear direction away from the first contact and then in a pivotal direction back toward the support. | ||||||
| 权利要求 | 1. An electrical circuit interrupting device, comprising in combination: a. a support frame; b. a first insulator mounted on said support frame at one end thereof and projecting therefrom; c. a first electrical contact mounted on said first insulator at a point spaced from said supporT frame; d. a second insulator mounted on said support frame to project in the same direction as said first insulator but spaced therefrom; e. a housing member pivotally mounted on said second insulator at a point spaced from said support frame; f. a second electrical contact slidably mounted within said housing member, said second electrical contact being of tubular shape; g. a quenching chamber on said second electrical contact, said quenching chamber being of tubular shape; h. lever means pivotally connected to said support frame; i. a bolt means mounted on said lever means; j. connected means on said second electrical contact for engaging said bolt; and k. cam means on said housing member, whereby said housing member is initially swingable from a position between said insulators to a second position where said first electrical contact and said second electrical contact are in alignment, and whereby further swingable movement of said lever means urges said electrical contacts to engagement. 2. The combination defined in claim 1, including roller means on said bolt means engaging said cam means. 3. The combination defined in claim 1 wherein said bolt means is located on said lever means at a fixed distance from the lever pivot, and wherein said cam means includes a cam member having a surface which has a radius of curvature equal to the radial distance of said bolt from said lever pivot. 4. The combination defined in claim 3 wherein said cam member further has a linear surface located at the end of said curved surface for effecting the pivotal movement of said housing member. 5. The combination defined in claim 1 wherein said connecting means has a fork shape formed of a pair of parallel members slidably engaging said bolt means on opposite sides thereof. 6. The combination defined in claim 1 wherein said quenching chamber means includes a tubular member connected at the end of said second electrical contact. 7. The combination defined in claim 1 wherein said member is of insulated material with said cam means being mounted on a wall of said housing member. 8. The combination defined in claim 1 wherein said lever means includes a pair of spaced substantially parallel links, and a trough-shaped connecting member formed of insulating material mounted between said links, and wherein said cam means moves said housing member into said trough-shaped member when said housing member is in a position between said first and second insulators to thereby insulate said second electrical contact from ground or from parts at a different electrical potential. 9. The combination defined in claim 1 wherein said lever means includes a shaft member rotatably mounted in said support frame. 10. The combination defined in claim 9 wherein said lever means includes a rocker arm fixed to said shaft member for rotation therewith, a rod member having a first joint pivotally connected to said rocker arm at a point radially spaced from the axis of said shaft member, and further connecting means connecting a second joint located on said rod at a point spaced from said first joint to said links whereby when said electrical contacts are in engagement the axis of said shaft member, and said first and second joints on the rod member are in a common plane. 11. The combination defined in claim 1 wherein said housing member has a length less than the distance between its pivotal mounting point on said second insulator and said support frame whereby said housing member and said second electrical contact can be moved by said lever means to a position between said first and second insulators and said support frame. 12. The combination defined in claim 1 including a flexible current lead electrically connecting said second electrical contact and an associated current carrying line. |
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