Cascaded-bistable-mechanism-based tri-stable or quaternary-stable mechanism and changing method thereof

Abstract

The invention relates to a cascaded-bistable-mechanism-based tri-stable or quaternary-stable mechanism and a changing method thereof, and belongs to the technical field of electromechanical systems and devices. The cascaded bistable mechanism is formed by an upper-end bistable mechanism and a lower-end bistable mechanism through a connecting rod and a connecting groove and then connected with a framework, and a positioning rod moves along the vertical direction; when the acting force of the upper-end bistable mechanism on the positioning rod is changed, the positioning rod is balanced at a second stable position under the support of the lower-end bistable mechanism; and when the upper-end bistable mechanism and the lower-end bistable mechanism skip simultaneously, the positioning rod reaches a third stable position. By adjusting the relative positions of the connecting rod and the connecting groove as well as the length of the connecting groove, the changing method changes the travel distance and the logical relation, i.e. a is lower than or equal to c which is equal to b or a is lower than or equal to c which is unequal to b, thus realizing the function transference between tri-stable state and quaternary-stable state. The mechanism has a simple structure, avoids friction and achieves adjustable quantities and positions of the stable states, thus being applicable to multiway switches and multi-stage variants.

Description

technical field [0001] The invention relates to a three-stable or four-stable mechanism based on a cascaded bistable mechanism and a variant method thereof, belonging to the technical field of electromechanical system devices. Background technique [0002] The bistable mechanism has the characteristics of low energy consumption, accurate positioning, rapid action and strong anti-interference ability. It is an excellent switch design element and can be widely used in the design of switches, position controllers and data storage devices. For this reason, U.S. patents (patent numbers 6215081B1, 7126446B2, and 7075209B2) and domestic patents (publication number CN101654216A) disclose bistable mechanisms that can be used in switch design, mainly capable of controlling the two states of "on" and "off". with conversion. With the rapid development of optical communication and multiplexing technology, the traditional two-stable mechanism design has been difficult to meet the switch ...

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Problems solved by technology

[0003] After literature research, it is found that adjustability is currently an insurmountable obstacle in the design of multi-stable mechanisms, especially after the assembly of multi-stable mechanisms is completed, it is difficult for users to adjust the parameters of the mechanism to change the number and position of the steady-state according to actual needs , and can only rely on clumsy disassembly and reassembly to set the steady-state parameters, which seriously affects the practicability of the multi-stable mechanism

For example, when the circuit system needs to be changed from three-way control to four-way control, the traditional method needs to replace the tri-stable switch in use with a four-way switch. This process is not only time-consuming and laborious, but also prone to failure and increased operating costs.

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