18results about How to "Reduce stress effects" patented technology

The invention discloses vacuum glass and a preparation method thereof. The preparation method comprises the following steps: grinding corners on one sides of the back surfaces of two glass sheets to form notches; tempering the two glass sheets, coating the outer edges of the back surfaces of the glass sheets with a first solder, and forming a notch; combining the two glass sheets; sealing the two glass sheets for the first time after the two glass sheets are combined; a getter is placed in the cavities of the two glass sheets through the notches in the sealing frame; sintering the second welding flux to form an inlaying piece and inserting the inlaying piece into the notch, wherein one end of the inlaying piece is arranged towards the cavity; elastic pressurizing devices are mounted on the two glass sheets, and the elastic pressurizing devices elastically abut against the other ends of the inlaying pieces; and sequentially carrying out vacuumizing and secondary sealing on the two glass sheets, so that vacuum is formed in the cavity, and the second welding flux is molten to seal the notch. The invention solves the problem that the solder at the vacuum lower edge part is easy to foam when being heated at high temperature in the existing vacuum glass preparation method.

The invention relates to the technical field of cables, and provides an anti-electromagnetic interference control cable, which comprises a group of wire cores, a wrapping layer wrapped outside the group of wire cores, a first shielding layer wrapped outside the wrapping layer, an outer sheath wrapped outside the first shielding layer, a filling layer, a butt joint sleeve, a butt joint assembly, an electromagnetic shielding assembly and a thermal shrinkable sleeve, a filling layer is arranged outside one group of wire cores, a wrapping layer is coated outside the filling layer, butt joint sleeves are detachably mounted at two ends of each wire core, a butt joint assembly is fixedly mounted between each group of adjacent wire cores, an electromagnetic shielding assembly is mounted on each butt joint assembly, and a thermal shrinkable sleeve is fixedly mounted between two opposite outer sheaths. The cable solves the problem that the anti-electromagnetic interference capability of the cable is reduced due to the fact that the joint of the cable is prone to electromagnetic interference and electromagnetic leakage caused by the lack of good shielding and insulation protection in the prior art.

The invention provides a negative plate and a battery, the negative plate comprises a current collector and an active material layer located on at least one side surface of the current collector, and the active material layer comprises a first coating close to the surface of the current collector and a second coating far away from the surface of the current collector; the first coating comprises first graphite particles and second graphite particles; the second coating comprises third graphite particles and silicon carbon particles; and a plurality of concave parts are arranged on the surface of the active material layer. According to the negative electrode plate, the expansion problem and the lithium separation problem of the silicon-based material doped graphite negative electrode can be inhibited, so that the cycle performance and the rate capability of the lithium ion battery are remarkably improved.

The invention relates to the technical field of force measurement, and provides a pressure sensor sensitive structure and a packaging method thereof, the pressure sensor sensitive structure comprises a pressure sensing layer, a vibration beam layer, a stress isolation layer and a substrate layer, and the pressure sensing layer comprises a pressure sensing film; the vibrating beam layer comprises a vibrating beam base body and a vibrating beam structure, the vibrating beam base body is connected to the pressure sensing film, and the vibrating beam structure is connected to the vibrating beam base body; the stress isolation layer comprises a stress isolation ring structure, the stress isolation ring structure is connected to the side, away from the pressure sensing film, of the vibration beam base body, the stress isolation ring structure is hollow to form a through hole, and the vibration beam base body covers the first end of the through hole; the substrate layer comprises a quartz substrate sheet, the quartz substrate sheet is connected to the stress isolation layer, and the quartz substrate sheet covers the second end of the through hole. The stress isolation ring structure is arranged between the substrate layer and the vibration beam layer, so that the influence of external stress on the vibration beam layer can be isolated, the stability and the precision of the vibration beam structure are protected, the assembly stress, the thermal stress and the vibration impact stress from packaging can be effectively weakened, and the stability of zero offset of the whole meter is improved.

The invention discloses a preparation method of a high-voltage and ultrahigh-voltage tantalum capacitor cathode. The preparation method comprises the following steps of performing a pre-compensation forming process on a tantalum block; soaking in the solution A after high-temperature drying, then carrying out a high-temperature thermal decomposition process, and cooling after completion of the thermal decomposition process; carrying out an intermediate repair forming procedure, and then carrying out high-temperature drying; dipping in a solution B, then carrying out a high-temperature thermal decomposition process, and cooling after completion; carrying out an intermediate repair forming process, then dipping in the solution C, and then drying; carrying out high-temperature air decomposition, and then cooling; dipping in a solution D, then carrying out a high-temperature thermal decomposition process, and cooling after completing the thermal decomposition process; and then carrying out a final repair forming process, drying at a high temperature, and dipping a cathode auxiliary material to complete the preparation of the capacitor cathode. By obtaining the manganese dioxide layer, the influence of various stresses on the dielectric oxide film is reduced in multiple high-temperature thermal decomposition processes, the risk of leakage current increase or breakdown caused by degradation of weak parts or defects of the dielectric oxide film is reduced, and the qualified rate and reliability of the capacitor are improved.

The embodiment of the invention provides a processing method of a glass panel for a touch screen and the touch screen. The processing method of the glass panel for the touch screen comprises the following steps: providing a glass substrate and an etching solution; the glass substrate comprises an opening area, and laser irradiation is carried out on the opening area of the glass substrate; the glass substrate is placed in the etching liquid to be soaked, the part, located in the hole opening area, of the glass substrate is etched away through the etching liquid, and the glass panel for the touch screen is obtained. According to the processing method of the glass panel for the touch screen and the touch screen provided by the embodiment of the invention, a traditional numerical control lathe physical cutting method is replaced by a chemical etching method, and higher precision and smaller feature size can be realized by chemical etching; the CNC cutting may cause micro-cracks or fragmentation on the edge of the hole, and the chemical etching can significantly reduce the micro-cracks on the edge of the hole due to the non-contact processing mode, thereby improving the strength and reliability of the glass.

The utility model relates to the technical field of heat dissipation structures, in particular to a laminated mainboard heat dissipation structure of an intelligent watch, which comprises a watchcase, a main PCB (printed circuit board) arranged in the watchcase, an auxiliary PCB arranged in the watchcase and a substrate arranged in the watchcase and positioned between the main PCB and the auxiliary PCB. Liquid metal heat conduction layers are arranged on the contact faces of the base plate and the main PCB and the contact faces of the base plate and the auxiliary PCB respectively, the main PCB is electrically connected with the auxiliary PCB, a battery bin is arranged in the watchcase, the battery bin is arranged on the side of the main PCB and electrically connected with the main PCB, a mounting plate is fixedly connected into the watchcase, and the mounting plate is fixedly connected with the base plate. The utility model aims to provide the laminated mainboard heat dissipation structure of the intelligent watch, so as to solve the problem that the longitudinal space is not fully excavated due to the plane layout of a single-sided PCB (Printed Circuit Board).

The utility model relates to a pay-off rack, in particular to an automatic pay-off rack of a cable, which comprises a pay-off rack, a fixed frame, a passing roller, an adjusting screw rod, an extension frame and a compression roller, the fixed frame is U-shaped, a groove is arranged in the fixed frame, the adjusting screw rod is rotatably arranged in the fixed frame, the end part of the passing roller is rotatably connected with a sliding block, and the extension frame is connected with the compression roller. The sliding block is connected to the adjusting screw rod through threads and connected with an extending frame, and the pressing roller is rotationally connected to the end of the extending frame. The cable guiding device is provided with the passing roller and the pressing roller, after being preliminarily positioned and limited by the two rotating rollers, a cable crosses the passing roller and then penetrates through the lower portion of the pressing roller, the passing roller and the pressing roller are matched to guide the cable, the stress influence is effectively reduced, the cable guiding device can adapt to cables of different specifications, the cable can be accurately limited and guided, and the cable guiding device is convenient to use. And the take-up and pay-off quality of the cable is improved.

The invention belongs to photoelectric detection, and particularly relates to a corrosion-resistant multi-reflection gas absorption cell which comprises a shell, and a first reflector and a second reflector which are arranged in the shell, the first reflector and the second reflector are plano-convex lenses, the plane of the first reflector and the plane of the second reflector are oppositely arranged and serve as transmission faces, and the convex face of the first reflector and the convex face of the second reflector are oppositely arranged and serve as reflection faces. The gas sensor has the advantages of strong anti-interference capability, long service life and the like, and is applied to low-concentration and ultra-low-concentration gas measurement.

A bypass diode for improving welding application of electric resistance welding is characterized in that the bypass diode is structurally connected with a chip through first solder paste, connected with the chip and a copper connecting piece in parallel through second solder paste and connected with the copper connecting piece through third solder paste from right to left, and the above structures are wrapped by a plastic package body; the third solder paste and the copper connecting piece are connected with the first copper frame, the second copper frame is arranged on the right side of the first solder paste, and the two copper frames are provided with a tin block boss, an electric resistance welding boss, an electric resistance welding groove, a tin block boss groove and a via hole. The bottom of the chip is connected with the second copper frame.

The application relates to a chip packaging structure, which comprises a packaging substrate and a chip. A first surface of the packaging substrate is provided with a chip mounting area and a stress buffering area surrounding the chip mounting area. The chip is located in the chip mounting area. At least one of the chip mounting area and the stress buffering area is provided with at least one buffering groove, which extends from the first surface to a second surface and at least partially penetrates the packaging substrate. The application can effectively reduce stress concentration of the chip by arranging the buffering groove on the packaging substrate, so as to reduce the stress influence on the chip during installation of a packaging cover, and improve the reliability and stability of the packaging structure.

The utility model provides a kind of unmanned aerial vehicle throwing device for emergency rescue, belong to unmanned aerial vehicle throwing device technical field, including the quick release module of unmanned aerial vehicle bottom setting, the throwing frame of quick release module bottom setting, the lower surface of quick release module is provided with support plate, support plate middle part is provided with throwing device, throwing device bottom is provided with limit ring groove, multiple receiving grooves are opened in limit ring groove, every receiving groove's adjacent side is provided with an opening, the upper portion of throwing frame is provided with connecting assembly, the surface of connecting disc is provided with one inserting block around, the utility model is connected by throwing device and connecting assembly, to make support block insert into limit slot, by pivot driving limit slot rotation, to make connecting disc connected with limit slot rotate, make inserting block fall into receiving groove, to make connecting disc can not be supported by the connection of electric lifting rod, to reduce the influence of motor and electric lifting rod received stress, improve the service life of its component.

The utility model relates to the technical field of curtain wall construction, and discloses a curtain wall supporting device which comprises a supporting seat, four connecting frames are integrally arranged on the supporting seat, turning parts are rotatably arranged in the connecting frames, connecting and fixing assemblies are rotatably arranged on the surfaces of the connecting frames in a sleeved mode, the ends of the connecting and fixing assemblies and the turning parts are installed, and the connecting frames are fixedly connected with the supporting seat. A connection claw is rotationally arranged on the turning piece and installed on the glass curtain wall. The curtain wall supporting device solves the problems that in the prior art, due to the fact that most structures of point type supporting devices are integrally-manufactured claw-shaped structures, when part of curtain walls generate slight radian along with the appearance design condition of a building, due to the limitation of the fixed structures of the supporting devices, the supporting devices are affected by a tiny included angle generated by installation deviation between the adjacent curtain walls, and the curtain walls cannot be supported. And in the supporting process, bending stress can be continuously generated on the fixed curtain wall, so that the curtain wall becomes fragile, and the situation that the curtain wall is prone to cracking under the pushing of wind power is avoided.

The invention discloses a method for electroplating a film layer on IR printing ink, and belongs to the technical field of glass processing. According to the scheme, the baking temperature is increased in the baking link after screen printing of the IR printing ink, and the adhesive force of the IR printing ink and the glass substrate is enhanced; in the electroplating process, an electroplating machine table is heated to 120 DEG C or above, heat preservation is conducted on a product for 10-20 minutes, then a film layer is electroplated on IR printing ink in a constant-temperature heating environment, it is ensured that the IR printing ink and the film layer are fully expanded at the high temperature, accumulation of thermal stress is reduced, the bottom layer of the film layer is made of a material which is good in binding force with the IR printing ink, and therefore the service life of the film layer is prolonged. The adhesive force between the film layer and IR printing ink is improved; and then, the baking temperature of the silk-screen link after electroplating is reduced, so that the baking temperature is closer to the electroplating temperature, the stress effect between the IR ink and the film layer caused by temperature difference is reduced, and the generation of cracks is further reduced. The crack phenomenon of the IR printing ink in the high-temperature baking process is effectively reduced, and the quality and reliability of the product are improved.

The application discloses a composite hole transport layer, a preparation method and a perovskite solar cell, and belongs to the technical field of perovskite solar cells. The composite hole transport layer comprises aluminum oxide nanoparticles and Me-4PACz, and the mass ratio of the aluminum oxide nanoparticles and the Me-4PACz is 1: (10-100). The application effectively reduces the surface contact angle of the composite hole transport layer by blending the aluminum oxide nanoparticles and the Me-4PACz molecules in one hole transport layer, realizes the improvement of wettability, and adopts a blending strategy, so that part of the Me-4PACz molecules are directly exposed to the surface of the composite hole transport layer. In the area not covered by the aluminum oxide nanoparticles, perovskite keeps direct contact with the Me-4PACz. The existence of the aluminum oxide nanoparticles also helps to form a stable interface structure, and the long-term stability of the device is significantly improved.

The present invention provides an air conditioner housing and an air conditioner, wherein the air conditioner housing includes an air outlet; the air outlet includes a long end face and a short end face, and a reinforcement portion is provided at the junction of at least one set of adjacent long end faces and short end faces. In the technical solution provided by the present invention, the problem of excessive stress at the corner of the air outlet is solved through the design of the reinforcement portion, thereby avoiding damage caused by the stress problem and extending the service life of the air conditioner.

The invention provides a voice acceleration sensor and wearable equipment. Comprising a substrate, an anchor point, a first mass block and a second mass block, the first mass block and the second mass block are connected to the anchor point and located on the two sides of the anchor point, and the first mass block and the second mass block can move relative to the substrate to be close to or away from the substrate and move in opposite directions. The first mass block comprises a first sub-block and a second sub-block, the first sub-block, the second sub-block and the second mass block are sequentially arranged in the length direction of the voice acceleration sensor, and the length of the second sub-block is equal to that of the second mass block; the first sub-block is provided with a first damping part which is recessed inwards from the surface, facing the first surface, of the first sub-block, and / or the substrate is provided with a second damping part which is recessed inwards from the first surface, and the second damping part and the first sub-block are oppositely arranged in the height direction of the voice acceleration sensor. According to the technical scheme, the high-frequency dynamic sensitivity detection precision is good, and noise and temperature drift are small.

This application provides a display device and its driving method. The display device includes a display panel. The display panel includes a plurality of pixel units. Each pixel unit includes a first sub-pixel and at least one second sub-pixel. The first sub-pixel includes a first driving circuit and a first light-emitting diode. The first driving circuit includes a first pulse amplitude modulation control module, a first transistor, and a second transistor. The second sub-pixel includes a second driving circuit and a second light-emitting diode. The second driving circuit includes a second pulse amplitude modulation control module, a second pulse width modulation control module, a third transistor, and a fourth transistor. The technical solution of this application reduces the number of data signal lines, lowers the complexity of the driving circuit, improves color point stability and brightness uniformity, reduces transient current peaks, and improves the reliability of the display device.