Patent Application
20090134124
(1) Field of the Invention
The present invention relates to a buffering mechanism for gas circuit breaker and the buffering mechanism reduces impact to the center piece thereof.
(2) Description of the Prior Art
A conventional gas circuit breaker for protecting circuit system generally includes an activation mechanism which allows the circuit to be shut off at high speed. In order to reduce over stroke of the activation mechanism due to initial movement, an impact unit 5 as shown in
The present invention intends to provide a buffering mechanism for the gas circuit breaker and the center piece is pivotably connected between two side boards so as to absorb impact of the two links which hit the center piece at different times.
The present invention relates to a buffering mechanism for a gas circuit breaker and the buffering mechanism comprises a center piece having two protrusions extending from two ends thereof and two match surfaces are defined in two opposite sides of the center piece. Two side boards each have a pivot hole and a slot, and the two protrusions of each end of the center piece are pivotably engaged with the pivot hole and the slot respectively, wherein the slot is sized to allow the protrusion to move therein. A plurality of impact plates are engaged with the two match surfaces of the center piece.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
Two side boards 12 each have a pivot hole 121 and a slot 122 defined therethrough, the two protrusions 21 of each end of the center piece 11 are pivotably engaged with the pivot hole 121 and the slot 122 respectively. Each slot 122 is sized such that the protrusion 21 is movable therein. Each side board 12 further includes a plurality of holes 123 for positioning the side boards 12 which clamp the center piece 11 therebetween. In this embodiment, the slot 122 of each side board 12 is an oval slot and includes the curvature of 10 degrees.
A plurality of impact plates 13 are engaged with the two match surfaces 112 of the center piece 11. Each impact plate 13 includes passages 131 which are located in alignment with the through holes 113 in the center piece 11 so that bolts 3 extend through the passages 131 of the impact plates 13 and the through holes 113 of the center piece 11, and are connected with two nuts.
The gas circuit breaker includes a barrel 4 and a Y-shaped link mechanism 22 is located in the barrel 4 and cooperated with in two links 21. The Y-shaped link mechanism 22 includes an upright member and two inclined members which are pivotably connected to a top of the upright member. The two links 21 are pivotably connected to the two inclined members respectively. As shown in
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
