7results about How to "Curb bending" patented technology

The invention provides an optical system and electronic equipment. The optical system comprises a lens group, the lens group comprises a first lens group, a second lens group and a third lens group, and the first lens group comprises a first lens, a second lens and a third lens; the second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens; the third lens group comprises a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens; the optical system satisfies the following conditions: 1.85 < FG1 / FG3 < 2.95; f23 / (CT2 + CT3) is more than-10.90 and less than-9.10; f45 / T34 is more than 1.90 and less than 3.60; fG1 is the combined focal length of the first lens group, FG3 is the combined focal length of the third lens group, F23 is the combined focal length of the second lens and the third lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, F45 is the combined focal length of the fourth lens and the fifth lens, and T34 is the air interval between the third lens and the fourth lens on the optical axis. The optical system realizes the balance of high performance and miniaturization.

The present application relates to the technical field of machining tools, in particular to a numerical control machining tool for long shaft parts, comprising a tool main body, two sets of clamping assemblies, two sets of connecting assemblies, a driving assembly and two sets of pushing assemblies. At least one set of the connecting assemblies is arranged to slide along the axial direction. An elastic member one is arranged between the connecting assembly and the clamping assembly, and the elastic member one is stretched by moving the connecting assembly to apply an axial tension to the part. The pushing assembly is arranged in the clamping assembly and comprises a pushing member and a driving member one, and is used to abut against the end face of the part. The present application further comprises an auxiliary assembly and a limiting assembly. When the clamping assembly is released to avoid the end machining tool, the limiting assembly locks the position of the pushing member, and cooperates with the auxiliary assembly to assist the fixing of the part in the radial and axial directions. The axial stretching mechanism effectively compensates for the thermal deformation of the long shaft part and suppresses the machining vibration.

The utility model discloses a shore-based movable concrete lining plate modularization collaborative repairing work station which comprises a portal frame body, the portal frame body comprises two supporting frame bodies and a connecting frame body connected between the two supporting frame bodies, and the two supporting frame bodies and the connecting frame body are each of a truss structure. Compared with the prior art, the two supporting frame bodies and the connecting frame body in the ashore equipment are all of a truss structure, and compared with a solid web girder structure, the self weight can be reduced by 30%-50%, and the transportation and hoisting difficulty and the energy consumption of a driving system are reduced; and a multidirectional stress system is formed while the light weight of the structure is guaranteed, bending, shearing and torsional deformation are effectively restrained, the overall structural rigidity of the portal frame body is guaranteed, and the use requirement can be met.

This utility model discloses a wear-resistant and antistatic PP sheet, relating to the field of PP sheet technology. It includes a substrate with structural grooves on its inner wall, a metal-carbon composite inner layer mounted on its outer wall, a wear-resistant composite surface layer mounted on the outer wall of the metal-carbon composite inner layer, and a wear-resistant frame mounted on the outer wall of the wear-resistant composite surface layer. The side walls of the wear-resistant frame have weight-reducing grooves. This utility model utilizes the substrate, structural grooves, and metal-carbon composite inner layer. The structural grooves are formed by an array of equilateral triangles with equal spacing. Triangles are the most geometrically stable structure, and their rigid connections between sides and corners effectively resist deformation, suppressing overall substrate bending and improving compressive stiffness. Simultaneously, the metal-carbon composite inner layer, composed of copper powder, graphene, carbon black, and other materials, forms a conductive network that conducts internal static electricity, achieving an antistatic effect.

Provided is a separator for a lithium secondary battery, the separator including: a porous polymer substrate; and a first binder layer formed on at least one surface of the porous polymer substrate and including a particulate type polyvinylidene fluoride (PVDF)-based binder polymer, wherein the first binder layer i) includes a caprolactone-based dispersant, or ii) has a surface roughness (Sa) of 0.12 µm to 0.22 µm.

The invention relates to an electrode member. The electrode member includes a base material including a resin base material and a conductive layer formed on the resin base material, and an active material layer formed on the conductive layer, and the resin base material has a recessed portion recessed inward in a thickness direction parallel to a lamination direction at a position overlapping the active material layer in the lamination direction of the base material and the active material layer.

This invention relates to the field of pressure sensor packaging technology and discloses a micro differential pressure sensor packaging structure, including a PCB board. A MEMS chip is bonded to the inside of a mounting slot using conductive adhesive. Gold wires are mounted at one end of both the ASIC chip and the MEMS chip, with the other end of the gold wires mounted on the upper surface of the PCB board. Gold wires are also installed between the ASIC chip and the MEMS chip. A cover is mounted on the upper surface of the PCB board. A limiting structure is provided at the upper end of the substrate, and the MEMS chip is positioned in the middle of the limiting structure. This invention utilizes the fact that the thermal expansion coefficient of the substrate is between that of the MEMS chip and the PCB board, forming a gradient transition. This reduces interfacial stress caused by material expansion differences during temperature changes. The highly thermally conductive ceramic can quickly disperse the working heat of the MEMS chip, reducing the temperature gradient and avoiding piezoresistive bridge imbalance caused by local thermal deformation, thus preventing zero-point drift of the MEMS chip. Simultaneously, the high hardness and Young's modulus of the ceramic suppress the transmission of energy from PCB board bending or vibration, protecting the MEMS chip from external mechanical impacts.