8results about How to "Reduce mechanical stress" patented technology

The utility model relates to a kind of scar paste with temperature control memory effect and tension reduction function, the scar paste includes layer by layer arranged silica gel layer, shape memory metal layer, temperature control layer and waterproof layer;The silica gel layer includes the adhesive part of symmetrical adhesion in the two sides of skin wound when using, the two ends of the shape memory metal layer are connected with the adhesive part of corresponding side respectively, temperature control layer and waterproof layer are sequentially arranged on shape memory metal layer;The shape memory metal layer is used to change into preset contraction mode under skin temperature and / or the heating of temperature control layer and drive adhesive part shrink in tension reduction direction.It can drive the adhesive part of silica gel layer shrink in tension reduction direction under skin temperature compared with prior art, so as to achieve the effect of tension reduction and inhibiting scar hyperplasia, finally realize the effect of "scarless healing".

The utility model discloses a PTC heater structure, including a plurality of PTC heating tube, a plurality of radiating fins and mounting seat, a plurality of PTC heating tube installation is positioned on mounting seat, and a plurality of radiating fins interval arrangement sets up on PTC heating tube, still be provided with corrugated elastic metal sheet between a plurality of radiating fins and mounting seat, the corrugated elastic metal sheet is nickel base alloy material quality, a plurality of radiating fins and mounting seat are all aluminum material quality, the contact surface of a plurality of radiating fins is close to PTC heating tube and has coated nano alumina heat conduction coating, like this, through the elastic deformation absorption vibration energy, and gradient thermal expansion design, reduce the thermal stress, reduce the mechanical stress between mounting seat and fin aluminum pipe, prevent the connection loose after long -term use.

This utility model discloses a piezoelectric ultrasonic sensor, relating to the field of sensors. It includes a mounting plate, a circuit board, and a sensor body. The circuit board is located in front of the mounting plate, and the sensor body is fixedly mounted on the front end of the circuit board. A connecting plate is fixedly mounted on the front end of the mounting plate. This utility model forms an elastic support structure. When the sensor body is subjected to external impact or vibration, the buffer spring can absorb energy through deformation, significantly reducing the mechanical stress transmitted to the circuit board and sensor body, preventing precision components from wearing or breaking due to vibration. The flow guide plate directs ambient sound waves to the sensor body, achieving a sound wave focusing effect and improving signal reception sensitivity. Furthermore, the sound wave reception angle and coverage range can be adjusted by sliding and rotating the flow guide plate to adapt to different detection scenarios. The number of flow guide plates can also be increased or decreased for customized applications.

This invention belongs to the field of micro / nano structure material design and battery energy storage technology, and relates to a method for preparing a three-dimensional graphene-COF interlocking material: First, by controlling the amination and reduction of graphene oxide, amine functional groups are precisely constructed on its surface, serving as active sites for heterogeneous assembly; then, in solution blending, the enhanced multiple intermolecular forces between the amine groups and the COF precursor drive the COF units to undergo oriented adsorption and two-dimensional ordered pre-assembly on the graphene surface, forming a molecular-level anchor array; subsequently, through a solvothermal reaction, interfacial covalent condensation and π-plane-induced epitaxial growth are synergistically achieved, causing the COF layer to crystallize and form a strongly coupled heterojunction with the deeply reduced and structurally repaired graphene at the molecular level; finally, after freeze-drying and shaping, a dual continuous conductive network carrier with a stable heterointerface, three-dimensional interlocking channels, and an intrinsic built-in electric field is obtained.

The application provides a semiconductor device with more uniform thermal stress distribution on the chip surface, which comprises a substrate of a first conductive type, a plurality of rows of units arranged along the longitudinal direction on the substrate, and a plurality of units arranged along the transverse direction in each row, wherein the units are active units, dummy units or dummy gate units; the active units, the dummy units and the dummy gate units are arranged in any proportion in the transverse direction and the longitudinal direction; the thermal stress on the surface of the semiconductor device is customized by adjusting the proportion of the active units, the dummy units and the dummy gate units in different regions or the length of the source region of the active units or the spacing of the units or the mesa width of the units. The semiconductor device adopts a non-repetitive unit structure layout, and the chip surface temperature is adjusted according to the designer's requirements by adjusting the unit layout or the unit structure; the thermal gradient on the chip surface can be reduced, the large thermal mechanical stress borne by the semiconductor package can be reduced, and the service life and reliability of the device and the interconnection structure thereof can be prolonged.

The present application relates to a kind of dyeing device for high-grade clothing fabric, comprising: dyeing box, for providing the dyeing space filled with dye liquor;Heating assembly, it is set in the bottom of the dyeing box and is used to heat the dye liquor and keep warm;Airflow stirring assembly, it is set in the lower region of the dyeing space, and is used to provide the bubble flow that disturbs the dye liquor;Dye liquor circulation assembly, it includes dye liquor circulation pipeline, the inlet end of the dye liquor circulation pipeline is connected in the upper region of the dyeing space, outlet end is connected in the upper of the airflow stirring assembly;Roller drive assembly, for guiding fabric to pass through the dyeing space, and complete dyeing job.Compared with prior art, the present application can improve the dyeing quality and efficiency of high-grade clothing fabric vulnerable to injury.

The embodiment of the present application provides a kind of binder, its manufacturing method, electrode sheet, lithium ion battery and wearable device.The binder includes supramolecule with beta-fold structure and linear molecule with linear structure, when binder is used in electrode sheet of lithium ion battery, supramolecule can still move freely along beta sheet, can effectively dissipate energy, reduce mechanical stress, so as to avoid the cracking and falling of electrode material doped with binder in electrode sheet after large deformation, and the beta-fold structure of supramolecule can promote supramolecule to restore to original state after external force is removed.Therefore, the binder provided in the embodiment can ensure that electrode material maintains stable shape and is closely covered on the surface of current collector, so as to ensure that electrode sheet maintains stable state in various severe deformations.

This utility model relates to a reaction device, a reaction vessel for resin production, including a stirring shaft and a vessel body. The lower end of the stirring shaft extends into the vessel body along the upper end and is connected to stirring blades and a trigger rod. The upper end of the stirring shaft is connected to a drive motor. The trigger rod includes a rod body perpendicular to the stirring shaft. A groove is formed along the axial direction of the end of the rod body away from the stirring shaft. Limiting grooves are formed on opposite sides of the inner wall of the groove, consistent with the direction of the groove. An alloy contact is provided in the groove. With the cooperation of a spring and a guide block, the alloy contact of this utility model can stably contact the spherical protrusion during stirring, generating regular vibration. This vibration can effectively drive the flow of reactants near the side wall in the vessel body, making the reactants more thoroughly mixed. At the same time, the vibration can reduce the adhesion of reactants to the side wall of the vessel body, significantly improving reaction efficiency, reducing material waste and equipment cleaning difficulty.