Small flexible structure dynamic vibration absorber for attenuating vibration impact

Abstract

To provide a versatile small dynamic vibration absorber and an application method using the same which has a vibration control performance for maintaining a physical and mental state in a good state by mitigating or preventing the mental and healthy damage by a vibration impact received by an operator during operation, drive, and work.SOLUTION: A dynamic vibration absorber 1 includes an internal vibration control structure 2, an impact attenuation structure 4, and an external package 6. The internal vibration control structure 2 includes a fluid body 3 therein, and a vibration control performance thereof can adjust a performance, amount, inclusion amount, variation, and mutual interference of the included fluid body. The impact attenuation structure 4 in an intermediate layer includes an air 5 or a space 5, and stores the internal vibration control structure 2. A mitigation attenuation performance of the impact attenuation structure 4 can be adjusted by a material property such as rigidity of the structure, physical property such as thickness and number, volume of the contained air space, shape, and inner pressure. The external package 6 stores the internal vibration control structure 2 and the impact attenuation structure 4 in the intermediate layer. Regarding a transport load, a shape function is provided in consideration of a combination with other structure to provide a function as a dynamic vibration absorber.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a small-sized flexible dynamic vibration absorber that attenuates vibration and shock. Damage in industry caused by transport vibrations is obvious and is metrologically protected by transport packaging design. Vibration also causes fatigue and health damage to humans, and is a major source of damage to society and industry, including damage to the health of the limbs and internal organs caused by constant vibration shock, accidents caused by loss of concentration, and reduced productivity. This invention relates to a small flexible dynamic vibration absorber that attenuates vibration shock with the aim of reducing these. [Background technology]

[0002] Destruction of objects occurs due to fatigue damage caused by minute vibrations and large impacts. The same is true for humans, with many accidents and loss of concentration while driving or working, which is a burden on industry. Therefore, this invention was made with the aim of reducing vibration during operation. The inventor invented a cargo material in "Dynamic vibration absorber for transporting cargo and a transportation method using the same" and achieved great results.

[0003] In the practical application of this vibration control material, there was a demand for it to be more resistant to shocks, and for it to be lightweight and low-cost. Through experiments and structural review, we came up with this general-purpose, small-sized device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 06184206 Summary of the Invention [Problem to be solved by the invention]

[0005] Dynamic vibration absorber materials were needed to deal with the vibrations and shocks caused by equipment operation. An object of the present invention is to provide a dynamic vibration absorber for vibration and impact that has the ability to reduce or prevent damage to an object caused by non-steady vibrations and impacts received during operation and maintain the quality of the object in good condition, and to provide applications for the same. [Means for solving the problem]

[0006] We have found a structure that provides shock absorption through the gas or soft structure of the liquid tuned damper, thereby reducing both vibration and shock.

[0007] The present invention is composed of an intermediate layer structure with a cushioning function and an internal structure with a vibration-damping function. The intermediate structure is given a cushioning function by using a small mass of gas or space to respond to "shocks."

[0008] In the present invention, the impact is mitigated by the time it takes for the gas to deform, as the impact peak becomes lower. In the later stages, the fluid is deformed with a delay to absorb the energy. The energy is converted into thermal energy, but the amount of energy is low and it is easy to dissipate the heat. Effect of the Invention

[0009] The present invention can provide a general-purpose, compact dynamic vibration absorber that has the ability to reduce or prevent injury to an operator caused by vibrations that the operator experiences while driving or working, thereby maintaining the operator's body and health in good condition, and uses for the same. In particular, it will reduce constant vibrations, as well as shocks that are difficult to predict and design, at low cost, thereby reducing transportation losses in Japanese industries. [Brief description of the drawings]

[0010] [Figure 1] Conceptual diagram of a dynamic vibration absorber for transporting cargo with shock function [Diagram 2] Conceptual diagram of the use of the present invention [Diagram 3] Structure diagram of the present invention [Explanation of symbols]

[0011] 1 Dynamic vibration absorber for transporting cargo 2. Vibration control structure 3. Fluid 4. Impact Damping Structure 5 Gas or space 6 Exterior materials

Claims

[Claim 1] A small flexible dynamic vibration absorber that reduces vibration and shock Dynamic vibration absorbers are one of the important mechanical structures, and are functional structures of springs and pendulums that utilize inertia. They are essential mechanisms for the stable operation of machines and operating equipment by attenuating vibrations, and are used in motors, vehicles, elevators, high-rise buildings, and bridges. We have devised a general-purpose dynamic vibration absorber using cellular structures and fluids, and it is a basic industrial mechanical structure that controls vibration and shock. The small general-purpose dynamic vibration absorber function consists of an internal vibration control structure, an intermediate layer with a buffer function, and an exterior material to store it. The internal vibration-damping structure consists of a collection of fine cellular tissues or small containers that contain fluids and gases. The middle layer, which has a cushioning function, is a soft tissue or cellular tissue filled with gas that has a cushioning function that supports and contains the internal vibration-damping structure. The exterior material holds and contains the functions of the structural materials, and has the retention force to transmit the vibration-damping function to the products in which these structures are used. A general-purpose small dynamic vibration absorber characterized by these features.

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