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negative stiffness device

A negative stiffness, equipment technology, applied in mechanical equipment, spring/shock absorber functional characteristics, transmission, etc., can solve problems such as packaging obstacles

Active Publication Date: 2019-03-15
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, mechanical actuators requiring vertical springs suffer from packaging hurdles

Method used

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Embodiment Construction

[0043] Referring now to the drawings, in which certain exemplary embodiments are shown for illustration only and not for limitation thereof. figure 1 A negative stiffness device 100 is shown that is linear in operation, ie a linear motion negative stiffness device. The linear motion negative stiffness device 100 comprises three main components: an outer tube or guide 1 , an inner tube or guide 3 and a flexible, generally annular bellows 2 . Thus, generally speaking, the linear motion negative stiffness device of the present invention comprises a generally annular bellows interposed between a first surface and a second surface.

[0044] The bellows 2 is located approximately between the inner surface 8 of the outer guide body 1 and the outer surface 7 of the inner guide body 3 and contacts them. The substantial part of the bellows 2 which contacts the inner surface 8 of the outer guide 1 may be referred to as the outer wall 19 and the substantial part of the bellows 2 which co...

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Abstract

A negative stiffness apparatus includes a fluid filled bellows interposed between a first surface and a second surface wherein the bellows and the first and second surfaces have an orientation of substantial equilibrium between the first and second surfaces. The bellows and the first and second surfaces include other orientations wherein the first and second surfaces are displaced from the orientation of substantial equilibrium and the bellows exerts a displacement force to urge the first and second surfaces further away from the orientation of substantial equilibrium.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 62 / 009,416, filed June 9, 2014, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to negative stiffness devices. Background technique [0004] The statements in this section merely provide background information related to the present disclosure. Accordingly, these statements are not intended to constitute an admission of prior art. [0005] Negative stiffness devices are known, which achieve their performance goals by, for example, mechanical snapping or electromagnetism. Mechanical negative stiffness devices require joints, which exhibit wear and friction. Additionally, mechanical actuators requiring vertical springs suffer from packaging hurdles. Electromagnetic actuators can take the form of linear motors, which are large, heavy and expensive, or solenoid actuators, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/06F16F15/067F16H7/00
CPCF16F9/06F16F9/0418F16F9/0427F16F2228/063
Inventor D.布兰德A.隋萨A.卡普亚
Owner GM GLOBAL TECH OPERATIONS LLC