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

A bi-stable and tri-stable technology, applied in the direction of contact drive mechanisms, mechanical equipment, engine components, etc., can solve problems affecting the practicability of multi-stable mechanisms, increase operating costs, time-consuming and laborious, etc., to achieve real-time Accurate control, simple structure and high controllability

Inactive Publication Date: 2011-08-17
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 reass

Method used

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

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Embodiment 1

[0026] The jump process of the bistable V-shaped mechanism has been disclosed in the domestic patent (publication number CN101834097). The mechanism has two local minimum potential energy points within the travel range. When the mechanism starts to deform from the first local potential energy minimum point, Convert the work done by the external force into deformation energy storage. When the deformation reaches a certain level, the stored deformation energy is released quickly, and the mechanism reaches the second local minimum point of potential energy to realize the bistable jump. Therefore, the present invention does not describe it in detail. describe.

[0027] figure 1 It is a tri-stable or quad-stable mechanism based on a cascaded bistable mechanism. The figure shows that the mechanism is in the first stable equilibrium state in the initial state, the upper bistable mechanism 1 is connected with the frame 3, and is threaded with the connecting rod 4 and the positioning ...

Embodiment 2

[0033] Figure 5 and Figure 6 A three-stable or four-stable mechanism with two sets of bistable cosine double-layer mechanisms is presented. On the basis of implementation 1, the upper bistable mechanism 1 and the lower bistable mechanism 2 adopt the upper cosine bistable mechanism 9 and the lower cosine bistable mechanism 10 respectively, relying on the relationship between the upper and lower cosine bistable mechanisms Interaction to realize tri-stable and four-stable functions, and by adjusting the relative position between the connecting rod 4 and the connecting groove 5 or the length of the connecting groove 5, the size of the stroke between each stable state and the distance between the strokes can be changed. The logical relationship is used to realize the adjustment of the steady-state position and the mutual conversion between the three-stable and four-stable functions. Figure 6 Between the connecting rod 4 and the connecting groove 5, the damping mechanism 11 is ...

Embodiment 3

[0035] Figure 7 A three-stable mechanism and a four-stable mechanism suitable for MEMS integrated processing are given. Relying on MEMS micromachining technology, the upper bistable mechanism 1, the lower bistable mechanism 2 and the frame 3 can be fixedly connected and connected at the same time. The rod 4 and the positioning rod 6 are fixedly connected with the upper mass block 7, and the connection groove 5 is fixedly connected with the lower mass block 7 to form an integrated mechanism, realize the overall processing of MEMS, and avoid cumbersome assembly process.

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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 ...

Claims

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Application Information

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IPC IPC(8): H01H3/32F16K31/02
Inventor 赵剑刘书田黄毓高仁璟陈国玺
Owner DALIAN UNIV OF TECH
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