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430results about How to "Prevent falling off" patented technology

Quad flat non-lead (QFN) package with high density and manufacturing method

The invention discloses a quad flat non-lead (QFN) package with high density and a manufacturing method. The package comprises a lead frame 201, metal material layers 25, an IC chip 27, insulating filling materials 23, bonding materials 26, metal conductors 28 and plastic package materials 29, wherein the lead frame comprises a chip carrier 202 and a plurality of leads 203 arranged in multiple circles around the chip carrier; the metal material layers are arranged on the upper and lower surfaces of the lead frame; the IC chip is arranged on a metal material layer on the upper surface of the lead frame; the insulating filling materials are arranged below stepped structures 22b of the lead frame; the bonding materials are arranged between the IC chip and the metal material layer on the upper surface of the lead frame; the IC chip is connected to the inner leads of the multiple circles of leads and the upper surface of the chip carrier respectively by the metal conductors; the plastic package materials wrap and seal the IC chip, the bonding materials, the metal conductors, partial regions of the lead frame and partial metal material layers; and the chip carrier and the outer leads exposed out of the bottom surface of a package structure, are provided with raised parts. The package and the manufacturing method have the following beneficial effects: the bottleneck of low I/O quantity is broken through and the package reliability is improved.
Owner:BEIJING UNIV OF TECH

Temperature sensor fixing structure for outdoor set of air-conditioner

The invention belongs to the air conditioner technical field, in particular a temperature sensor fixing structure of an air conditioner outdoor unit which keeps constant distance with a condenser, is difficult to drop off and displace in production and transportation and is not influenced by operation of defrosting and heating, solving the problems of easy displacement and dropping-off, and abnormal operation of the air conditioner of the prior temperature sensor fixing structure due to incorrect and unstable temperature sensing in the process of defrosting and heating. The invention adopts the technical proposal that the inside of a shell is provided with an air conditioner outdoor unit, a temperature sensor support and a sensor, wherein the air conditioner outdoor unit consists of a compressor, an outdoor heat exchanger, an outdoor fan, a reversing valve, an expansion valve and a control box; and the temperature sensor support is fixed at a suction inlet of a rear panel of the air conditioner outdoor unit; the sensor support is formed by a support body which comprises a U-shaped temperature sensor bayonet and a screw hole right angle fixing part, the U-shaped temperature sensor bayonet is formed by means of injection moulding on one side and the screw hole right angle fixing part is formed on the other side, the temperature sensor is clamped in the U-shaped temperature sensor bayonet, and the fixing part is fixed on the edge of an inner wall of a right ribbed plate of a rectangle suction grill hole of the rear panel by screw holes and screws.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

Tungsten carbide particle reinforced steel matrix surface-layer composite material and preparation method thereof

The invention discloses a tungsten carbide particle reinforced steel matrix surface-layer composite material and a preparation method thereof and belongs to the technical field of preparation of a wear-resistant material. The composite material is composed of three layers which are respectively a composite layer, a transition layer and a base material layer; the transition layer is positioned between the composite layer and the base material layer; the composite layer is mixed powder of tungsten carbide particles and 45 steel metal powder; the transition layer is mixed powder of tungsten powder and 45 steel metal powder; the base material layer is 45 steel metal powder; the preparation method of the tungsten carbide particle reinforced steel matrix surface-layer composite material comprises the following steps: firstly preparing powder, subsequently pressing a prefabricated blank and finally performing vacuum sintering to obtain the tungsten carbide particle reinforced steel matrix surface-layer composite material; according to the preparation method disclosed by the invention, the preparation temperature is relatively low; reinforcing particles are uniformly distributed in a base body commendably; the prepared tungsten carbide particle reinforced steel matrix surface-layer composite material is free of impurities, relatively high in performances, beneficial for environmental protection, capable of serving under complicated working conditions such as shock chilling, shock heating, impact and abrasion, and relatively good in impact resistance and oxidation resistance.
Owner:KUNMING UNIV OF SCI & TECH

Safe and reliable intelligent new energy vehicle charging pile convenient to use

The invention relates to a safe and reliable intelligent new energy vehicle charging pile convenient to use. The safe and reliable intelligent new energy vehicle charging pile convenient to use comprises a base, a main body and two charging mechanisms; each charging mechanism comprises a driving box, a storage box, a cable, a plug, a supporting mechanism and two convex blocks; each supporting mechanism comprises a bottom plate, a supporting plate, a supporting block, a lifting assembly and four supporting legs; driving assemblies are arranged in the driving boxes; storage mechanisms are arranged in the storage boxes; and each storage mechanism comprises a lifting plate, a cable outlet pipe, a plurality of guiding assemblies and a plurality of rotating assemblies. According to the safe andreliable intelligent new energy vehicle charging pile convenient to use, as the plugs are arranged above the supporting plates by using the supporting mechanisms, and the moving distances of the cables on the supporting plates are limited by using the convex blocks, the phenomenon that the plugs fall on the ground to cause potential safety hazards is prevented; and moreover, the cable storage functions of the storage mechanisms are realized by using the driving assemblies to drive the lifting plates to lift; during charging, the cables are convenient to pull out to charge a vehicle by loweringthe lifting plates so that the practicability of the charging pile is enhanced.
Owner:SHENZHEN NAISHIDI TECH DEV CO LTD

Preparation method of polymer lithium ion battery and polymer lithium ion battery

The invention discloses a preparation method of a polymer lithium ion battery and the polymer lithium ion battery. The preparation method comprises the following steps of: preparing a positive plate and a negative plate which contains a silicon carbon active layer; coating a layer of polymer film on the two surfaces of the positive plate and the negative plate; arranging a diaphragm in the middle of the positive plate and the negative plate so that the positive plate, the diaphragm and the negative plate are prepared into a bare battery cell, and packaging the bare battery cell into the battery shell; injecting liquid electrolyte into the battery shell in a drying room, and sealing the opening of the battery shell to obtain a polymer lithium ion battery precursor; heating and pressurizing the polymer lithium ion battery precursor, and plasticizing to form the polymer lithium ion battery; and performing formation on the polymer lithium ion battery. The volume energy density of the polymer lithium ion battery is improved, the phenomenon that the silicon carbon active layer is powdered or drops from a negative current collector in the process of charging and discharging the negative plate which contains the silicon carbon active layer in the polymer lithium ion battery is avoided, and the cycle performance of the battery is improved.
Owner:韩志娟

Centrifugal ceramic composite vertical mill roller sleeve and manufacturing method thereof

The invention discloses a centrifugal ceramic composite vertical mill roller sleeve and a manufacturing method thereof. The centrifugal ceramic composite vertical mill roller sleeve comprises an inner layer and an outer layer. The outer layer is high-chromium cast iron, and ceramic particles are embedded in the outer layer. The high-chromium cast iron is prepared from, by weight, 2.3-3.3% of C, 0.3-1.0% of Si, 0.6-1.2% of Mn, 18-22% of Cr, 0.7-1.7% of Ni, 1.5-3.0% of Mo, 0-0.03% of P, 0-0.03% of S and the balance Fe and inevitable impurities. According to the vertical mill roller sleeve, the material proportion of the inner layer and the outer layer is optimized; high-alloy elements are adopted by the outer layer, the matrix can be effectively reinforced by increasing the content of alloy such as C, Cr, Mo and V, the total amount of carbide is increased, and therefore the smoothness of a friction surface can be effectively improved; the outer layer of the roller sleeve is made to be high in abrasion resistance, high in strength and enough in toughness, and the service life of the roller sleeve is effectively prolonged. According to the manufacturing method, a heat treatment technique of annealing, quenching and tempering is adopted, the purposes of improving the carbide form, promoting structural transformation and refining structures are achieved, so that the abrasion resistance and fracture toughness of the roller sleeve are improved.
Owner:河北津西钢铁集团重工科技有限公司

Flexible substrate and method for manufacturing the same, flexible display device and flexible display apparatus

InactiveCN107482022AGuaranteed a tight fitPrevent falling offFinal product manufactureSolid-state devicesEngineeringLight cure
The invention provides a method for manufacturing a flexible substrate. The method includes that a bearing substrate is provided; a photosensitive adhesive layer is formed on the bearing substrate; a flexible substrate is arranged on the photosensitive adhesive layer, the flexible substrate includes an active area and an inactive area; the photosensitive adhesive layer comprises a first area and a second area, the photosensitive adhesive in the first area in the photosensitive adhesive layer is light-cured and the photosensitive adhesive in the second area remains uncured; a component is formed on the flexible substrate, the orthographic projection of the inactive area of the flexible substrate on the bearing substrate covers the orthographic projection of the first area of the photosensitive adhesive layer on the bearing substrate, the orthogonal projection of the second area of the photosensitive adhesive layer on the bearing substrate covers the orthogonal projection of the active area of the flexible substrate on the bearing substrate; the bearing substrate is cut along the boundary between the inactive area and the active area such that the inactive area and the active area are separated; and the bearing substrate in the active area is separated from the flexible substrate. The method can effectively reduce the peel strength between the flexible substrate and the bearing substrate.
Owner:BOE TECH GRP CO LTD +1

Bamboo fiber towel product prepared through modified adhesive

The invention relates to a textile, in particular to a bamboo fiber towel product prepared through a modified adhesive. The bamboo fiber towel product is manufactured by the following steps: bamboo fiber preparation; towel product preparation which comprises the steps of cloth turning, weft yarn cutting, head sewing, single-sided singeing, desizing, scouring, bleaching, mercerizing, dyeing, weft yarn finishing, adhesive dipping and tentering, wherein the adhesive dipping step comprises the steps of dipping fabric in the modified adhesive for 18-25 minutes and draining the adhesive for 5-8 minutes; the modified adhesive consists of the following raw materials in part by weight: phthalic anhydride, furfuryl alcohol, triethylene glycol, glutaric acid, butantriol, zinc oxide powder, magnesium oxide, chloroprene rubber, 70-95 parts of elastic rubber, 2-3 parts of softening oil, dimethyl carbonate, benzoyl peroxide, ethyl acetate, an emulsifier, 20-30 parts of flour, 5*10 <-5> to 9*10 <-5> parts of nanometer silver, flame retardant, 0.8-2.5 parts of a catalyst, 3-7 parts of a bamboo vinegar water solution and 6-13 parts of bamboo carbon powder with the grain diameter of 0.01-0.06mm; the elastic rubber comprises first elastic rubber and second elastic rubber which are mixed according to a weight ratio of (1-3):1. The bamboo fiber towel product prepared by the invention has great softness and anti-bacterial activity.
Owner:安吉登冠竹木开发有限公司

Stable and lasting dental implant structure

The invention relates to a dental implant, and aims at providing a stable and lasting dental implant structure. The dental implant structure comprises an implant, a base station and a central bolt; the upper portion of the implant is located in the gingival, the lower portion of the implant is implanted into the alveolar bone, the lower end of the base station is inserted into an installing hole formed in the upper portion of the implant, the base station is provided with a communicated stepped inner hole, the central bolt fixes the base station into the installing hole through the stepped inner hole formed in the base station, and the base station is used for installing a dental crown; the implant comprises an inner sleeve and an outer sleeve which are coaxially arranged; the installing hole is located at the upper end of the inner sleeve, the outer wall of the inner sleeve is provided with an outer thread, the inner wall of the outer sleeve is provided with a matched inner thread, and the inner sleeve is in threaded connection with the outer sleeve; the outer sleeve is made of pure titanium, the outer surface of the outer sleeve is provided with an outer thread, the outer sleeve is subjected to surface treatment to be in anchor combination with the alveolar bone, and the inner sleeve is made of titanium alloy. The dental implant is good in durability and stable and reliable in performance.
Owner:CHENGDU BESMILE MEDICAL EQUIP CO LTD

Movable junction box of circuit cable

The invention discloses a movable junction box of a circuit cable. The box comprises a housing, and the two ends of the housing are each provided with a cable inlet structure used for allowing a cableto enter. Moreover, a wiring structure which is used for fixing a cable and is connected for connection is also arranged in the housing; upper sliding grooves are symmetrically formed in the upper side wall of the housing in a penetrating mode with the wiring structure as the center; lower sliding grooves are symmetrically formed in the lower side wall of the housing in a penetrating mode with the wiring structure as the center, wherein the upper sliding grooves and the lower sliding grooves are correspondingly formed, and the upper sliding grooves and the lower sliding grooves in the same side are each provided with a lead clamping structure used for fixing a traction cable in a sliding mode. The lead clamping structures can assist in fixing the tail end of the cable and prevent the tailend of the cable from falling off during wiring, and meanwhile, the part, with insulation protection stripped, of the periphery of the cable can be clamped away from a cable inlet position, so that the safety is improved; and a second adjusting screw rod is rotated to adjust the wiring block to descend and is matched with the wiring groove to clamp the cable, so that the effects of more stable clamping, more convenient wiring and safer wire leading and control are achieved.
Owner:JIANGSU ELECTRIC POWER CO

Module for stacking thin panels and method of stacking thin panels

InactiveCN102530353APrevent falling offEnsure load transfer areaRigid containersDamagable goods packagingThin slabThin sheet
The present invention provides a module for stacking thin panels and a method of stacking thin panels when a plurality of thin panels are vertically stacked in a state of being supported by the modules capable of securing an adequate load transfer area for transferring a load of the thin panels. The module for stacking the thin panels includes: a support portion for supporting the thin panel from below; a load transfer portion connected to the support portion for transferring a weight of the thin panel downward; and drop-off preventing means for regulating horizontal movement of the thin panel. The load transfer portion includes a load transfer surface extending outward from the support portion, the load transfer surface includes a load receiving surface provided in an upper portion of the module and a load releasing surface provided in a lower portion of the module, and the drop-off preventing means includes a protrusion portion protruding downward from a lower portion of the module. When an upper module is stacked on a lower module such that the load releasing surface of the upper module is placed on the load receiving surface of the lower module, an outer surface of the protrusion portion of the upper module abuts on an upper inner surface of the lower module from an inner side thereof.
Owner:KYORAKU CO LTD
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