Compact circuit breaker
阅读：494发布：2021-05-13
专利汇可以提供Compact circuit breaker专利检索，专利查询，专利分析的服务。并且A compact electric circuit breaker with high current carrying ability is disclosed. This circuit breaker utilizes compact means to achieve high contact pressure necessary for high current carrying ability, and, in addition, utilizes a mechanical arrangement occupying a minimum amount of space and including a minimum number of force reducing members which cooperate to permit a relatively low trip force to actuate the circuit breaker and thus open the circuit upon the occurrence of a particular condition such as a current overload.，下面是Compact circuit breaker专利的具体信息内容。
1. An electric circuit breaker comprising: a. an insulating casing; b. a handle pivotally mounted in the casing; c. a stationary contact member; d. a contact member movable into and out of engagement with said stationary contact member; e. operating spring means acting on said movable contact member; f. means connecting the handle to the movable contact member, comprising a collapsible connecting member, said connecting member comprising first and second pivotally interconnected links and a latch pivotally connected to said second link and releasably engaging said first link; g. a trip member pivotally mounted in the casing; h. means biasing said trip member toward said connecting member; i. means normally restraining said trip member in a predetermined position out of contact with said connecting member; j. releasing means mounted in said casing and operable to cause releasing movement of said restraining means; k. said biasing means, upon release of said restraining means, moving said trip member into engagement with said latch member to effect release of said first link from said latch and thereby permit collapse of said connecting member by said operating spring means.
2. An electric circuit breaker as set forth in claim 1 wherein said operating spring means comprises a compression spring disposed in said casing, said movable contact member comprises an elongated structure, means mounting said structure intermediate its ends to said second link, said movable contact member has a contact adjacent one of said ends and said compression spring acts on said contact member on the opposite side of said mounting means from said contact.
3. An electric circuit breaker as set forth in claim 1 wherein said connecting member further comprises a spring member for biasing said first and second pivotally interconnected links toward abutting contact so as to permit said latch to releasably engage said first link.
4. An electric circuit breaker as set forth in claim 1 wherein said latch releasably and loosely engages said first link to permit relative movement between said first and second links, whereby application of a force to be transmitted by said connecting member through said first and second links puts saiD links in a slightly collapsed condition with respect to each other.
5. An electric circuit breaker as set forth in claim 1 wherein said releasing means are responsive to the occurrence of a predetermined condition.
6. An electric circuit breaker as set forth in claim 1 wherein said restraining means comprises a trip bar pivotally mounted in said casing between said trip member and said releasing means, said trip bar biased toward engagement with said trip member and movable away therefrom upon actuation of said releasing means.
7. An electric circuit breaker as set forth in claim 1 wherein said handle and said trip member are mounted for rotation about a common axis of rotation.
8. An electric circuit breaker as set forth in claim 1 wherein the trip member comprises a planar structure having first and second projections at opposite ends thereof; said first projection being engageable with said restraining means and said second projections being engageable with said latch member.
9. A two-pole electric circuit breaker comprising: a. an insulating casing; b. a handle pivotally mounted in said casing; c. a pair of stationary contact members mounted in said casing; d. a pair of movable contact members mounted in said casing; e. each of said pair of movable contact members being movable into and out of engagement with corresponding ones of said stationary contact members; f. operating spring means acting on each of said movable contact members; g. means connecting said handle to said movable contact member comprising a collapsible connecting member, said connecting member comprising first and second pivotally inter-connected links and a latch pivotally connected to said second link and releasably engaging said first link; h. a trip member pivotally mounted in the casing; i. means biasing said trip member toward said connecting member; j. means normally restraining said trip member in a predetermined position out of contact with said connecting member; k. releasing means mounted in said casing and operable to cause releasing movement of said restraining means; l. said biasing means, upon release of said restraining means, moving said trip member into engagement with said latch member to effect release of said first link from said latch and thereby permit collapse of said connecting member by said operating spring means.
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