Portable Folding Research Articles

Product design innovation based on the functional characteristics of the eight-masted windmill

To catch and research the functional characteristics of the eight-masted vertical windmill and its automatic readjustment of sail angle in the Lixia River area of northern Jiangsu Province, to permit this intangible cultural heritage a new practical meaning in modern tourism through the innovative design of the sail structure of the eight-masted windmill, and to come up with a portable folding windmill product suitable for outdoor sports enthusiasts. Firstly, we spell out the history of the eight-masted windmill and its “trotting horse lamp” structure through literature research and draw the working principle of the eight-masted windmill in operation, and combine the eight-masted windmill with power generation device by converting wind energy into electricity. The design direction was to design a lightweight, breeze start, and stable power output windmill generator; secondly, the sketch of the windmill main shaft structure and scheme were selected, and the integrated form of the fan blade and the mast was selected as the sketch scheme; finally, the model experiment of the prototype of the folding scheme was conducted, and the absolute pressure difference between blades was analyzed by hydrodynamics to determine that the windmill can be used to generate electricity. After verifying its feasibility, the portable folding generator was modeled in 3D by MCAD, and make a physical model of the generator was made in a reduced scale of 1:2.5. Through the innovative design of the eight-masted windmill, it is made to serve the production life of modern society.

DESAIN KURSI GAMPSEK (GAMPIL LAN SEKECO) KONSEP PORTABLE FOLDING UNTUK ACARA TALK SHOW

Konsep Portable Folding. Gampsek chair is a chair for users in carrying out talk shows. The objective of writing this article is a) Being able to create a Gampsek Chair Design with Portable Folding Techniques. b) Able to make the proper choice of Material for Gampsek Chairs. Methods of data collection through observation, interviews, documentation, and literature study. The results of the data collection method show that the portable folding concept is suitable to be applied to Gampsek chairs. The portable folding concept is applied to the mainframe, seat, and armrests, and it can use a folding construction. Therefore, the chair looks compact, and it does not take up much space. This chair can make it easier for users when used in many places. The selection of materials is solid wood with natural finishing, hollow iron finishing with white color, and synthetic rattan so that the combination of materials makes the chair seem futuristic.

Proposal of a Portable Folding Electric Scooter Model and Manufacturing of the Prototype

Proposal of a Portable Folding Electric Scooter Model and Manufacturing of the Prototype

High-voltage flexible solid state supercapacitor based on neutral hydrogel/carbon nanotube arrays

As a new energy storage device, supercapacitor (or electrochemical capacitor) has an ultra-long cycle life, extremely high power density and enhanced energy density. It fills the gap in the energy-power spectrum between traditional capacitor and battery. In general, the traditional energy storage and conversion device cannot have a perfect trade-off between high energy density and high power density. With the rapid development of modern society, developing light, portable, safe and environmentally friendly high-performance energy storage devices has become increasingly vital. Therefore, there are numerous researches of flexible solid supercapacitors emerging at this historic moment. The selection of flexible electrode materials and that of electrolytes are crucial factors in designing the flexible solid state supercapacitors, which have been the research hotspots in recent years. Carbon nanotube array has been widely used in electrode material of super capacitors due to its excellent electrical conductivity, large specific surface area and super high chemical stability. But in assembly process, carbon nanotube array easily collapses and breaks its neat orientation because of its poor mechanical strength. In consideration of environmental contamination and practical demands, in this paper the neutral gel electrolyte is adopted to embed carbon nanotube array to form flexible composite film electrode. Besides the fact that we use hydrophilic flexible carbon cloth as current collector and neutral gel electrolyte as separator to prepare flexible devices, we compare the electrochemical properties among different devices by changing the electrolyte salt added in gel electrolyte. Meanwhile, after continuous bending and folding, the properties of flexible devices have not been significantly damaged, indicating good flexibility and mechanical stability. The specific capacity of the whole device with PVA-NaCl used as gel electrolyte increases up to 104.5 mF·cm<sup>–3</sup>, which is much higher than the specific capacity of the composite device formed by organic ionic gels with carbon nanotube array and that of the composite device formed by commercial short carbon nanotubes with hydrogels. A maximum energy density of 0.034 mW·h·cm<sup>–3</sup> is obtained at the same time. In addition, it has good rate performance, cycling stability, suppressing self-discharge property, and good chemical stability at a high voltage of 1.6 V. Neutral gel/carbon nanotube array composite devices not only meet the needs of the era of green safety, flexible and portable folding, but also open up the future application prospects of medical implants.

Design and performance evaluation of portable folding type solar dryer for drying of amla candy

Design and performance evaluation of portable folding type solar dryer for drying of amla candy

Design and Development of Portable Folding Baby Bed

According to the product function of baby is too single, unable to achieve energy saving, time saving and other problems, this paper puts forward a design of multifunctional portable baby bed. The utility model has the advantages of realize the conversion of baby bed and chair, folding, easy to carry, and has the advantages of simple structure, convenient processing, stable and safe, affordable.

Are portable folding chairs useful to combat orthostatic hypotension?

The effect of sitting on a derby chair (height, 48 cm), fishing chair (38 cm), and footstool (20 cm) on the improvement of postural hypotension was studied serially in 8 patients with autonomic failure. The increment in blood pressure during sitting was higher by using a lower portable chair. This was related to an increasing cardiac output at lower sitting heights. The fishing chair was, according to our patients' experience, most useful.