6results about How to "Avoid quantity" patented technology

This invention provides a piezoelectrically driven pipe wall crawling robot and its control method, including an arc-shaped annular piezoelectric vibrator. The arc-shaped annular piezoelectric vibrator is a symmetrical, slightly curved annular structure. Two sliding drive teeth are arranged on the outer side of the annular segment, and crawling drive teeth are arranged at both ends on the inner side. Four arc-shaped annular piezoelectric ceramic plates are arranged on each of the upper and lower sides of the annular segment. The polarization direction of the eight arc-shaped annular piezoelectric ceramic plates is along the thickness direction and points to the same side. It also includes an arc-shaped annular slide rail, which is a semi-circular annular structure with a central angle of 180°. The sliding drive teeth of the arc-shaped annular piezoelectric vibrator are in close contact with the inner side of the arc-shaped annular slide rail. This invention simultaneously solves the problems that existing piezoelectrically driven robots are mostly focused on planar precision motion and micro-nano manipulation, and cannot adapt to the needs of curved pipe wall crawling, high-altitude hovering, energy-saving self-locking, and miniaturized high-efficiency operation.

A vehicle seat includes a seat cushion including a seat cushion frame as an internal skeleton of the seat cushion, a footrest rotatably provided at a front portion of the seat cushion frame, a lift driving mechanism configured to raise and lower the front portion, and a footrest tilting mechanism configured to rotate the footrest in conjunction with an operation of the lift driving mechanism.

The present application relates to the technical field of textile materials, and specifically relates to a moisture-absorbing, quick-drying, anti-static and dust-proof yarn and a preparation method and fabric thereof, and comprises the following steps: S1, obtaining modified nylon chips by in-situ polymerization of reaction monomers, water-soluble monomers and dispersion monomers and then slicing; S2, obtaining a special cross-section composite filament by spinning and winding, with polyvinyl chloride chips as core layer raw materials and the modified nylon chips as skin layer raw materials, and the winding mode being a skein; S3, obtaining a leaflet-holed composite filament by pretreatment in the skein state; and S4, obtaining a yarn. The present application realizes alkali-soluble modified nylon and the communication between the holes and grooves by changing monomers and skein alkali treatment, solves the technical defects of the prior art, such as moisture absorption and accumulation in the holes and general sweat-removing effect by only relying on the wicking effect, and avoids the difference in the number and quality of micropores of the inner and outer composite filaments compared with the bobbin filament treatment.

The invention provides a micro-pulse peristaltic pump type diabetes insulin pump which comprises a shell, a micro-pump medicine bin assembly, a micro motor and a gear assembly are arranged in the shell, and the micro-pump medicine bin assembly is detachably connected with the shell; a medicine bin containing insulin and a micro peristaltic pump used for pumping the insulin are arranged in the micro pump medicine bin assembly, and the two ends of a pump pipe of the micro peristaltic pump are connected with the medicine bin and an external medicine conveying guide pipe respectively. The micro motor is a flat motor, and the ratio of the diameter to the length of an armature of the micro motor is 8: 1. The insulin pump is different from a plunger type insulin pump existing in the current market, a power device adopts a micro peristaltic pump and is combined with a micro flat torque type motor, a speed reducing mechanism does not need to be arranged, the output torque is effectively increased in a limited space, and the dual requirements of the insulin pump for high-precision and low-power-consumption driving are met; the equipment is obviously simplified, and the weight of the equipment is reduced. Meanwhile, flexible supplement of liquid medicine can be achieved through the detachable medicine bin, the medicine bin can be repeatedly used, and the material consumption is reduced.

The invention belongs to the technical field of pipe fitting forming, and particularly relates to a special-shaped pipe fitting forming tool, a core mold and a forming method.The forming tool comprises a plurality of outer mold sections and a core mold assembly, and forming grooves and positioning grooves are formed in the outer mold sections; the core mold assembly comprises a central shaft and a demolding part on the side wall of the central shaft, and the outer side of the central shaft is coaxially sleeved with a first mold sleeve and a second mold sleeve; the first die sleeve comprises a first sleeve section and a second sleeve section, the second die sleeve comprises a third sleeve section and a fourth sleeve section, the first sleeve section and the third sleeve section are axially and adjacently arranged to enable the first die sleeve and the second die sleeve to form an inner die, and baffles axially abutting against the inner die are arranged at the two ends of the inner die respectively. A limiting hole is formed in at least one connecting face of the first mold sleeve and the second mold sleeve, and the demolding part is located in the limiting hole. On the basis of forming the special-shaped pipe fitting with a stepped through hole with two thick ends and a thin middle part, demolding of the formed pipe fitting and the core mold can be smoothly realized, and the production efficiency is improved.

The utility model relates to the technical field of hexagon wrenches, in particular to an inner hexagon wrench with a combined type nested structure, which comprises a handle, an outer wrench is arranged at one end of the handle, a clamping sleeve assembly used for stacking the wrenches is arranged in the outer wrench, and the clamping sleeve assembly comprises a plurality of inner wrenches sequentially arranged in the outer wrench. Butt joint plates are arranged on the outer walls of the multiple inner wrenches, sliding grooves are formed in the outer wrench and the multiple inner wrenches, magnetic plates are arranged on the inner walls of the sliding grooves, and multiple positioning grooves are formed in the other end of the handle; an inserting plate is arranged outside the handle, and a protruding block and a baffle are arranged outside the inserting plate. A plurality of wrenches with different sizes are sequentially overlapped and integrated, the wrench with the corresponding size can be stretched out according to conditions when the wrench is used, one wrench is suitable for bolts with various sizes, and the using and carrying convenience of the wrench is improved.