32results about How to "Adjust the length arbitrarily" patented technology

The invention relates to a multifunctional wiping device. The multifunctional wiping device comprises a hook (1), a first telescopic rod (2), a tensioning screw (3), a second telescopic rod (4), a connecting sleeve (5), a box body (6), a hinge pin (7), a box cover (8), a bolt (9) and a universal shaft (10), wherein wiping cloths (11) are arranged on the front face and four edges of the box body (6), the box cover (8) is arranged on the box body (6) through the bolt (9), the universal shaft (10) is arranged on the box cover (8), the connecting sleeve (5) is connected with the universal shaft (10) through the hinge pin (7), the second telescopic rod (4) is connected with the connecting sleeve (5), and is connected with the first telescopic rod (2) through the tensioning screw (3), and the hook (1) is arranged at the lower end of the first telescopic rod (2). The multifunctional wiping device has the advantages of simple structure, convenience for use and wide application, can be used for wiping a ceiling, a door and window or a floor and the like, and has a promising market prospect.

The invention belongs to the field of automatic pencils and particularly discloses an automatic pencil which aims to be reasonable in design, simple in structure, convenient to use, capable of replacing pencil leads of different types, strong in universality and capable of adjusting the length of the pencil leads exposing outsides. The automatic pencil comprises a pencil tube with a cavity. A pencil lead inlet / outlet communicated with the cavity in the pencil tube is arranged at the bottom end of the pencil tube. A spindle support is arranged in the pencil tube, a spiral sliding groove is arranged on the spindle support, a pencil lead pressing head capable of turning along the spiral sliding groove is clamped in the spiral sliding groove, a pencil lead is pressed on the pencil lead pressing head, and the pencil lead pressing head drives the pencil lead to move downwards. Top threads of the pencil tube are connected with a fixed tube. An elastic pressing part used for limiting axial displacement of the spindle support is arranged on the fixed tube and the spindle support. A driving device used for driving the spindle support to move is arranged in the fixed tube.

The invention relates to a piece of chain-shaped jewelry with an opening and closing type lock buckle. The jewelry comprises a buckle body and a chain, wherein the buckle body comprises an upper buckle main body and a lower buckle main body, openings are arranged at the corresponding positions of two sides of the upper buckle main body and the lower buckle main body, an upper connecting part and alower connecting part are arranged at the corresponding positions of the rear ends of the upper buckle main body and the lower buckle main body, penetrating connection is realized through a movable shaft, the upper buckle main body and the lower buckle main body are of open hollow structures, and rubber pads are arranged inside the upper buckle main body and the lower buckle main body. The jewelry has the advantages that the connection is stable, the length of the chain can be adjusted at random, the use is convenient, the lock buckle can be freely replaced, so that the different aesthetic demands of people are satisfied, and the use rate is improved.

The invention provides a poker allowing extensible adjustment. The poker comprises two hollow rods. The front end of each rod is provided with an extension rod allowing the extensible adjustment. According to the poker allowing the extensible adjustment, the length of the two rods can be freely adjusted along with the using requirements through the extension rods and accordingly the poker can adapt to use of various cookers.

The invention belongs to the technical field of paper-based microfluidic analysis, and specifically relates to a multi-element paper-based sliding microfluidic chip based on a cerium metal organic framework as well as a preparation method and a detection method thereof. The multi-element paper-based sliding micro-fluidic chip comprises an upper-layer reaction chip and a lower-layer color developing chip which are matched with each other, wherein a base material of the chips is porous filter paper, both the upper-layer reaction chip and the lower-layer color developing chip comprise a rectangular main body region and a side edge folding wing, and the main body region is divided into a hydrophilic region and a hydrophobic region; and the hydrophilic region comprises a reaction region and a color developing region, the reaction region modifies oxidase corresponding to a detection substance, and the color developing region anchors and assembles Ce-MOF nanoparticles for developing and filtering protein. The paper-based sliding chip is used for developing the color of hydrogen peroxide generated by the corresponding upper-layer reaction chip through the lower-layer color developing chip,a detection result is presented on the chip without expensive instruments and complex data processing processes, so that the multi-element paper-based sliding microfluidic chip is easy to operate, low in cost and wide in application range.

Of the multipurpose blade type cutting machine, the driving part has clutch assembly with gear in the output shaft; the frame has sliding track with fixed cam box and driven cam fixed inside the cam box; the cutting frame casing on the sliding track has cutting shaft, left fixed gear meshed with the gear in the clutch assembly, right driving cam meshed with the driven cam, and cutting blades fixed to the middle part of the cutting shaft; and the bar feeding unit has sensor connected with the control ends of the clutch assembly and distribution box. The present invention may have one or rotating several blades to complete cutting job, and the cut surface is flat, smooth and correct in size. The present invention is ideal fitting for automatic production line.