Operating mechanism for controlling and protecting switching device
A technology for operating mechanisms and protection switches, applied in the direction of contact operating parts, contact driving mechanisms, etc., to achieve the effects of improving reliability, avoiding slipping, and optimizing characteristics
Pending Publication Date: 2022-03-29
浙江中凯科技股份有限公司
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Problems solved by technology
[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the overload push rod in the prior art will reduce the amount of buckle and cause the buckle to slip while increasing the re-buckle stroke, thereby providing a method that will not increase the re-buckle stroke while increasing the rebuckle stroke. The operating mechanism of the control and protection switch for reducing buckling
Method used
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Embodiment
[0043] This embodiment provides an operating mechanism for controlling and protecting switching devices, such as Figure 1-3 As shown, it includes an overload cam 2 , a first stopper 3 and an overload push rod 4 .
[0044] The overload cam 2 and the first stopper 3 are both rotatably mounted on the switch body 1, and have a snap-fit snap-fit state and a separated tripping state driven by the overload push rod 4, such as figure 2 and 4 As shown, the overload cam 2 is provided with a drive block 5 that drives the overload push rod 4 to reset when buckling again. in such as figure 2 In the clamping state shown, the first buckle 16 of the overload cam 2 is engaged with the second buckle on the first stopper 3 . In this embodiment, as shown in the figure, the driving block 5 has a driving surface extending radially from the center of the overload cam 2, and the driving surface is suitable for driving the overload push rod 4 to re-clamp.
[0045] The overload push rod 4 is...
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The invention provides an operating mechanism for controlling and protecting a switching device, which comprises an overload cam and an overload push rod, the overload push rod is provided with a matching block matched with a driving block, and the matching block is provided with a first matching part and a second matching part which are arranged close to and far away from the rotation center of the overload cam respectively. And the second matching part is contacted with the driving block before the first matching part. The second matching part is ingeniously added on the basis of the original first matching part, in the re-buckling process, the overload cam rotates clockwise, the driving block makes contact with the second matching part firstly, the overload push rod is driven to move by a certain distance, then the driving block makes contact with the first matching part, and therefore the overload push rod continues to be driven to move. Therefore, the re-buckling stroke of the overload push rod is increased, and the overall length of the overload push rod is kept unchanged, so that the buckling amount is not influenced, the occurrence of buckle sliding is avoided, the qualified rate of re-buckling / resetting is greatly improved, and the characteristics of products are greatly optimized.
Description
technical field [0001] The invention relates to the technical field of control and protection switching devices for low-voltage electrical appliances, in particular to an operating mechanism for controlling and protecting switching devices. Background technique [0002] "Control and Protective Switching Device" (or Control Protective Device) is a new product in low-voltage electrical appliances, and its product category code is "CPS", which is the abbreviation of "Control and Protective Switching Device" in English. CPS can realize integrated, internally coordinated control and protection functions on products with a single structure, and can replace circuit breakers (fuse), contactors, overload (or overcurrent, phase failure) protection relays, starters, A variety of traditional discrete components such as isolators. [0003] The operating mechanism of the existing control and protection switchgear, such as Figure 11 and 12 As shown, it mainly includes a central cam 01 ,...
Claims
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IPC IPC(8): H01H3/02H01H3/42
CPCH01H3/02H01H3/42
Inventor 朱奇敏王小等翁金藏屠瑜权屠旭慰刘志军
Owner 浙江中凯科技股份有限公司