9results about How to "Keep it compact" patented technology

The utility model discloses a multi-contact line-to-board connector, and belongs to the technical field of connectors. A multi-contact line-to-board connector comprises a plug and a socket which are matched with each other, and further comprises a pair of first conducting strips which are arranged in the socket, contact elastic pieces are fixedly arranged at one ends of the first conducting strips, a connecting groove is formed between the contact elastic pieces, a second conducting strip is arranged in the plug, and the outer walls of the top and the bottom of the second conducting strip abut against the contact elastic pieces; according to the utility model, the pair of first conducting strips with the contact elastic sheets are arranged in the socket, the connecting grooves with small openings and large interiors are formed between the contact elastic sheets, reliable connection between the second conducting strips and the first conducting strips can be ensured under the elastic action of the contact elastic sheets, and due to the elastic effect of the connecting grooves, the reliable connection between the second conducting strips and the first conducting strips can be ensured after multiple times of plugging. The compact effect between the second conducting strip and the connecting groove can still be kept, the situation of loosening or falling off is reduced, and the reliability and stability during use are guaranteed.

The miniature unmanned aerial vehicle comprises a force bearing rack, a first rotor wing unit and a second rotor wing unit, the first rotor wing unit comprises at least two upper rotor wing assemblies arranged on the first face of the force bearing rack, and a height difference exists between paddle rotating planes of the adjacent upper rotor wing assemblies; the horizontal projections of the blade rotation tracks of the adjacent upper rotor assemblies form a first overlapping area; the second rotor wing unit comprises at least two lower rotor wing assemblies arranged on the second face of the force bearing rack, the first face and the second face are oppositely arranged, the lower rotor wing assemblies and the upper rotor wing assemblies are arranged in a staggered mode, and a height difference exists between paddle rotating planes of the adjacent lower rotor wing assemblies. And the horizontal projections of the blade rotation tracks of the adjacent lower rotor assemblies form a second overlapping area. The upper rotor wing assembly and the lower rotor wing assembly with the height difference are arranged on the force bearing rack, and the overlapped area design of the assemblies on the horizontal projection is adopted, so that the space utilization efficiency is improved.

The invention discloses a magnetic easy-to-separate Fe3O4-SnO-SiO2 composite catalyst and preparation and application thereof.The composite catalyst is of a core-middle layer-shell layer three-layer core-shell structure, a shell comprises a coating layer, the core comprises a magnetic core, the middle layer comprises an active layer, and the active layer is evenly adsorbed to the surface of the magnetic core; the magnetic core is Fe3O4; the active layer is any one or more than two of SnO, ZrO2 and TiO2; the coating layer is made of SiO2 and wraps the outer side of the active layer. The problems that efficient catalysis, convenient magnetic separation, long-acting circulation stability and precise regulation and control of a product structure cannot be synchronously solved in the prior art are solved. The conversion rate of the catalyst for catalytic synthesis of trimethylolpropane trioleate reaches 94.32%; the friction coefficient of the product is stabilized at 0.09-0.10, the wear volume is reduced by more than 68%, and the magnetic separation recovery rate is 98%.

The invention relates to the field of intelligent wearable devices, and discloses a dimmable dice wearable device which comprises a dice shell, a main control circuit board is arranged in an inner cavity of the dice shell, and a central processing unit, an LED dot matrix module, a near-field induction unit, a wireless communication unit, an audio conversion unit and an electric power storage unit are integrated on the main control circuit board; the central processing unit is connected with the LED dot matrix module, the near-field induction unit, the wireless communication unit, the audio conversion unit and the power storage unit through an electrical loop. Through cooperation of the integrated LED display module and the light guide composite material shell, dynamic and digital adjustment of the wearable device is realized, and the wearable device integrates LED, audio playing, communication and user interaction functions. Different LED colors can be switched and corresponding audios can be played according to the emotion of a user, and meanwhile, emotion data can be transmitted and received through wireless communication.

The invention belongs to the technical field of surface modification of positive electrode materials of lithium ion batteries, and relates to an oxygen capture and thermal stability compound coating for a positive electrode material and application thereof, the oxygen capture and thermal stability compound coating comprises positive electrode active material particles and a compound functional coating covering the surfaces of the positive electrode active material particles, and rare earth elements comprise at least one of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; the transition metal element comprises at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co and Ni; the thickness of the composite functional coating ranges from 1 nm to 200 nm. The double functions of oxygen capture and thermal barrier are achieved through the composite functional coating; lattice oxygen release of the positive electrode material in a high-voltage and high-temperature environment can be remarkably inhibited, the side reaction of an electrolyte or solid electrolyte interface is reduced, the cycle life is prolonged, and the safety performance is improved.

The application discloses a few-sample fraud type identification method of spectrum adaptive prompt and related devices, belonging to the field of electric digital data processing, the method comprises the following steps: after pre-processing the unlabeled graph data, extracting the high and low frequency characteristics of the nodes by using the Chebyshev model, training the spectrum perception model by adaptive weighting comparison learning through the node level spectrum weight coefficient, calculating the high frequency energy proportion of the downstream graph data, introducing the adapter to generate the enhanced filter coefficient, extracting the high and low frequency characteristics and weighting fusion, combining the clustering constraint optimization, and only updating a small amount of parameters. The application realizes the dynamic adaptation and efficient migration of pre-training spectrum knowledge to few-sample downstream tasks, significantly reduces the dependence on labeled data, alleviates the few-sample overfitting problem, and improves the fraud identification accuracy and generalization ability.

The invention provides a preparation method of heat insulation silica gel foam, and belongs to the technical field of organic silicon foam. According to the raw material formula, the silica gel foam is prepared from two components in equal mass, by adding the modified aerogel composite material, the thermal conductivity of traditional silica gel foam is further reduced, good heat insulation and flame retardant effects are achieved, the flame retardant grade can reach V0, and therefore the silica gel foam has good application prospects as a heat insulation device in a new energy battery pack.

The application provides an earphone battery compartment structure and an earphone. The earphone battery compartment structure comprises: a battery compartment inner shell having a first accommodating groove, the first accommodating groove having a first opening facing a first direction and a second opening facing a second direction, the first direction being non-parallel to the second direction; a battery compartment outer cover having a second accommodating groove, the second accommodating groove having a third opening facing a direction opposite to the first direction and a fourth opening facing a direction opposite to the second direction; the battery compartment outer cover is covered on the battery compartment inner shell, the first opening and the third opening are oppositely arranged, and the second opening and the fourth opening are oppositely arranged, so that the first accommodating groove and the second accommodating groove form an accommodating cavity; and a battery is located in the accommodating cavity. The earphone battery compartment structure makes the installation and dismounting process of the battery more convenient. Not only the use experience of the user is improved, and the difficulty of replacing the battery is reduced, but also the service life of the earphone is prolonged, and the convenience and maintainability of the earphone are met.