26results about How to "Minimization requirements" patented technology

The invention discloses an industrial lens with a large target surface, low distortion and low chromatic aberration. An optical system of the industrial lens is composed of a meniscus positive lens L1, a meniscus negative lens L2, a biconcave negative lens L3, a positive lens L4, a diaphragm C, a positive lens L5, a biconvex positive lens L6, a biconcave negative lens L7, a biconvex positive lens L8, a biconvex positive lens L9, a biconcave negative lens L10, a biconvex positive lens L11 and an image plane IMG which are sequentially arranged along an incident light path, and the object side face of the meniscus positive lens L1 is a convex face; the object side surface of the meniscus negative lens L2 is a convex surface; the biconvex positive lens L6 and the biconcave negative lens L7 form a first gluing group; and the biconvex positive lens L9 and the biconcave negative lens L10 form a second gluing group. The industrial lens has the advantages of small size, large target surface, low distortion, low chromatic aberration and high resolution.

The invention discloses a monitoring lens with low distortion, large target surface and high resolution, which sequentially comprises a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10 and an eleventh lens L11 from an object side to an image side along an optical axis, the second lens L2 and the third lens L3 are closely connected to form a first glued lens group; the fourth lens L4 and the fifth lens L5 are closely connected to form a second glued lens group; the first lens L1 to the third lens L3 form a front group lens; the fourth lens L4 to the eleventh lens L11 constitute a rear group lens. The monitoring lens has the advantages of low distortion, large target surface, high resolution and miniaturization.

The utility model relates to the technical field of electronic equipment, and discloses a circuit board and electronic equipment, the circuit board is provided with a differential signal hole group, and the hole group comprises a first signal hole pair and a second signal hole pair; wherein the two signal holes in the first signal hole pair are symmetrical about the first symmetry axis and located on different sides of the first symmetry axis, the first symmetry axis sequentially passes through the circle centers of the two signal holes in the second signal hole pair, and the first signal hole pair and the second signal hole pair are located on different sides of the first reference straight line respectively. The first reference straight line is perpendicular to the first symmetry axis. According to the circuit board and the electronic equipment provided by the invention, the crosstalk phenomenon between the differential hole pairs can be weakened, and the signal quality and the signal integrity are ensured.

The invention discloses a road damage detection technology field, specifically a road damage detection method based on deep learning, including the steps of using RDDA algorithm for detection, specifically as follows: road damage data set construction, image feature extraction module construction, design of deep separable parameter-free attention mechanism convolution module, extraction of feature map deep features, design of spatial pyramid adaptive pooling fusion module, use of FPN module for feature fusion, design of NWD‑EIoU loss function, use of Head detection head for detection, model training and verification, and application of the model. The invention effectively solves the problems of large number of parameters in current road damage detection algorithm, insufficient accuracy of small target disease detection, and poor effect of road disease detection under complex background, thereby making the algorithm parameter number of the invention lower, being suitable for the deployment of edge devices, and meeting the lightweight and real-time requirements of road damage detection.

The present invention relates to the technical field of vacuum electronic devices, and provides an electron gun frame, comprising an insulating porcelain seat, a first anode seat and a second anode seat arranged on the insulating porcelain seat, and a positioning member for fixing the first anode seat and the second anode seat, wherein the insulating porcelain seat comprises an insulating porcelain ring, and at least two positioning block groups evenly distributed along the circumference of the top surface of the insulating porcelain ring, each positioning block group comprises a first positioning block, a second positioning block and a third positioning block, the first positioning block, the second positioning block and the third positioning block are arranged in sequence and equidistantly, the setting heights of the first positioning block, the second positioning block and the third positioning block are successively larger, and each of the first positioning block, the second positioning block and the third positioning block is fixedly connected to the first anode seat, the second anode seat and the positioning member respectively by a clamping method. The present invention solves the technical problem that the miniaturized traveling wave tube in the prior art cannot meet the requirements in terms of weight reduction, processing, assembly and precision.

It is disclosed an implantable device for vessel occlusion comprising: (a) a solid marker having a proximal end and a distal end; and (b) a resilient mesh body attached to the distal end of the marker, the body having a delivery shape and a deployed shape capable of conforming to vessel walls; wherein the body is a dual layer of mesh comprising a circumferential fold line.

The invention discloses a multi-layer composite aluminum foil capacitor with high charge capacity density, which is applied to the technical field of capacitors, and can store more charges in a limited area by optimizing an electrode material, improving an insulating medium and innovating a structural design, thereby effectively improving the charge capacity density of the capacitor. Compared with a traditional aluminum foil capacitor formed through corrosion, the charge capacity density of the capacitor is greatly improved, the requirements for miniaturization and portability of electronic equipment can be met, high-density ultrahigh-voltage-resistant electrolytic paper and reasonably-arranged dielectric thin films are adopted for isolating positive and negative electrode aluminum foils, the insulativity between electrodes is ensured, and the service life of the capacitor is prolonged. According to the utility model, the electrolytic paper is used for preventing the short circuit phenomenon, especially the electrolytic paper has the characteristics of high density and ultrahigh voltage resistance, so that the capacitor can stably work in a high-voltage environment, the reliable operation of the capacitor is guaranteed, meanwhile, the leakage current of the capacitor can be obviously reduced, and the stable performance of the capacitor in the long-term use process is guaranteed.

The application provides a multi-frequency antenna and a communication device. The multi-frequency antenna comprises a reflecting plate, a first radiating unit and a second radiating unit, the first radiating unit and the second radiating unit are arranged on one side of the reflecting plate, and the first radiating unit is located between the reflecting plate and the second radiating unit. The first radiating unit comprises a first radiating part and a metal plate, and the metal plate is located between the first radiating part and the second radiating unit. The second radiating unit comprises a second radiating part and a metal ring, and the metal ring is located between the second radiating part and the metal plate. When the above structure is adopted, the size of the multi-frequency antenna as a whole can be reduced, and the first frequency band and the second frequency band have high isolation, so that the two frequency bands can work independently, the multi-frequency antenna can meet the miniaturization demand of the common antenna surface, the antenna works stably, and the efficiency is high.

The utility model provides a kind of valve group and compressor of miniaturization reciprocating compressor, it is related to compressor field, to the problem that the temperature of existing small compressor cylinder head is too high, gas flow resistance increases and leads to efficiency reduction, by the offset structure of valve plate on the valve plate subassembly suction hole, enlarge suction valve port flow area, reduce suction resistance, reduce the pressure loss and friction heat in suction process, to reduce suction overheating, from the source to relieve cylinder head overheating problem, allow to adopt smaller size cylinder hole, meet the demand of compressor miniaturization, the valve tongue both sides of suction valve piece are provided with contraction part to form waist, exhaust hole is arranged between two sides waist, adapt to the compact space of miniaturization valve group, suction muffler outlet and cylinder cover keep apart, leave gap, cut off the heat conduction path between cylinder cover and suction muffler, form heat insulation, reduce suction overheating, reduce cylinder head temperature benign cycle, improve miniaturization reciprocating compressor efficiency.

The invention discloses a miniaturized large-light-flux high-resolution vehicle-mounted side view lens, which sequentially comprises a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5 and a sixth lens L6 from an object side to an image side along an optical axis, and is characterized in that the first lens L1 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object side; the second lens L2 is a meniscus negative lens of which the concave surface faces the object side; the third lens L3 is a biconvex positive lens; the fourth lens L4 is a meniscus negative lens or a biconcave negative lens of which the concave surface faces the object side; the fifth lens L5 and the sixth lens L6 are both biconvex positive lenses. And the fourth lens L4 and the fifth lens L5 are tightly connected to form a gluing group. The vehicle-mounted side view lens has the advantages of being clear in imaging, small in size, high in light transmission and high in resolution.

The utility model discloses a zooming lighting module and lighting device relates to lighting device technical field, and zooming lighting module includes light source and zooming component, and zooming component includes drive arrangement, has the first lens of negative optical power and has the second lens of positive optical power, and first lens and second lens all set up in the emergent light direction of light source, and second lens is coaxial with first lens and is set up between first lens and light source, and drive arrangement is used for driving second lens and translates between first lens and light source, to make the light column of light source converging or diverging, and this zooming lighting module lens group number is less, can reduce the refraction number of light in reducing the volume of lighting module, satisfy miniaturization and light weight demand, guarantee effective illumination intensity. Lighting device, including above-mentioned zooming lighting module, cost is low, and the volume is small, can be applicable to a variety of mobile / non - mobile scene need.

This invention discloses a water circuit system for a wall-hung boiler, belonging to the field of household appliance technology. The water circuit system includes an inlet and outlet valve assembly, each comprising an integrally formed valve body. The valve body includes a three-way valve section, a heat exchange valve section, and an inlet valve section. The three-way valve section is located between the heat exchange valve section and the inlet valve section, which connect to a heat exchange structure. By making the valve body of the inlet and outlet valve assembly an integrally formed structure, the manufacturing process can be simplified, and manufacturing and assembly efficiency improved. By placing the three-way valve section between the heat exchange valve section and the inlet valve section, the arrangement space between them can be fully utilized. Compared to existing technologies, this significantly reduces the dimension of the inlet and outlet valve assembly extending beyond the heat exchange structure in the width direction, thereby reducing the overall width dimension of the wall-hung boiler water circuit system and meeting the miniaturization requirements of the system.

The utility model discloses a kind of small low-frequency filter single cavities, including cavity, cover plate, resonator outer tube, resonator inner rod and resonator ring, the top of cavity is equipped with cavity mouth, cover plate is covered in the top of cavity and seals cavity mouth;Resonator outer tube is vertically arranged in cavity, the lower end of resonator outer tube is connected with cavity;Resonator inner rod is inserted into resonator outer tube, the upper end of resonator inner rod is connected with cover plate, there is first gap between resonator inner rod and resonator outer tube and generates capacitance at first gap;Resonator ring is connected on the downside of cover plate, the upper end of resonator outer tube is inserted into resonator ring, there is second gap between resonator outer tube and resonator ring and generates capacitance at second gap.The utility model can produce enough large capacitance with smaller size, form low-frequency resonance, the filter formed by arranging multiple low-frequency filter single cavities together, with the characteristics of low frequency, small size, light weight, low cost.

The utility model provides an infrared optical system and an infrared optical lens. The infrared optical system comprises a super lens and a refraction lens which are sequentially arranged from an object side to an image side along an optical axis; the super lens comprises a substrate and a micro-nano structure located on the surface of the substrate, and the micro-nano structure is arranged on at least one of the image side face and the object side face of the substrate. The object side surface and the image side surface of the refraction lens protrude towards the image side; the infrared optical system satisfies the following conditions: # imgabs0 # L1 is the distance between the object side surface of the super lens and the image side surface of the refraction lens on the optical axis, and L2 is the thickness of the air gap between the super lens and the refraction lens on the optical axis. And the value of # imgabs 1 # is controlled between 3.2 and 5.8, so that the size of the infrared optical system can be controlled on the premise of ensuring the imaging quality of the infrared optical system, and the infrared optical system can meet the requirement of miniaturization. The infrared optical system adopts the combination of the super lens and the refraction lens, so that the size of the infrared optical system is obviously reduced on the premise of meeting the imaging requirement, and the production cost is reduced.

The utility model relates to the technical field of oxygen generators, in particular to a low-temperature preheating type oxygen generator which comprises a shell, an adsorption barrel, a temperature sensor, a controller, a compressor, a gas inlet pipeline and a gas distribution valve assembly. The controller is in signal connection with the compressor, the temperature sensor and the gas distribution valve assembly, the temperature sensor detects the temperature of the adsorption cylinder, the controller receives a temperature value fed back by the temperature sensor and controls opening and closing of the gas distribution valve assembly, and when the temperature is smaller than T, the controller controls the compressor to input pressurized hot gas into the adsorption cylinder; the ventilation port of the gas distribution valve assembly is partially opened and closed to circularly heat and exhaust the adsorption cylinder, so that the temperature of the adsorption cylinder is increased; when the temperature is larger than or equal to T, the controller controls the compressor and the gas distribution valve assembly to input pressurized gas into the adsorption barrel, and pressure swing adsorption oxygen production is conducted. On the premise that a heater is not additionally arranged, the temperature of the adsorption barrel in the low-temperature environment is increased, then the adsorption and desorption performance of an adsorbent is improved, and the oxygen generation performance of the oxygen generator is conveniently improved.

The utility model discloses a PXIE high-speed storage module which comprises a 3U PXIE standard card board, an FPGA module, an optical fiber module and an SSD storage group are welded on the 3U PXIE standard card board, and the FPGA module is electrically connected with the optical fiber module through GTH and I2C data lines; the SSD storage group comprises two SSDs (Solid State Disks) which are electrically connected with the FPGA module through PCIE (Peripheral Component Interface Express) X4 data lines; according to the utility model, the two SSDs are independently connected with the FPGA module through the PCIE X4 interface to form a 2 * PCIE X4 parallel storage channel. When data is written or read, the FPGA module can distribute data to the two SSDs at the same time, bandwidth superposition is achieved, the SSDs support the NVME protocol, and compared with a traditional SATA protocol, delay can be greatly reduced, the throughput capacity can be greatly improved, and the high-speed read-write requirement can be met; and a PCIE channel is used as a main data path of a host end, and PCIE GEN3X8 can support unidirectional transmission with the highest speed of about 8GB / s, so that high-speed data exchange between the host and the storage module is ensured.

The application relates to a quick plug-in structure and a plug, which comprises a plug and a socket, the plug shell has a pin mounting hole and a pin contact, the socket shell has a socket mounting hole and a socket; the pin contact comprises a front-end pin capable of axially reciprocating relative to the plug shell, the tail of the front-end pin is further connected with an elastic member; the front-end pin is further provided with a moving part capable of reciprocating along the radial direction of the front-end pin; when the socket is combined, the end face of the socket mounting hole stops and limits the moving part, and the elastic member is compressed; when the moving part is radially extruded and enters the release groove on the side wall of the socket mounting hole, and the front-end pin is axially moved and quickly combined under the pushing of the elastic member; when the socket is separated, the front end of the release groove stops and limits the moving part, the elastic member is stretched, the sliding part keeps contact with the socket; the moving part is separated from the release groove under the radial extrusion, and the front-end pin is quickly separated from the socket. The application shortens the plug-in time and weakens the burning influence of the electric arc.

The embodiment of the utility model relates to the technical field of terminals, and particularly discloses a terminal which comprises a shell, a control panel, an antenna and a connecting assembly, the shell is provided with a containing cavity, the control panel is arranged in the containing cavity, the antenna is arranged in the containing cavity, one end of the connecting assembly is arranged on the control panel, and the other end of the connecting assembly is arranged on the antenna. The other end of the connecting assembly abuts against the antenna, and the connecting assembly is electrically connected to the control panel and the antenna. Through the mode, the antenna and the control panel are electrically connected through the connecting assembly, and compared with a connector, the connecting assembly occupies a small space, so that the terminal occupies a small space, and the requirement of miniaturization of the terminal is met.

The invention relates to an iron-based amorphous nanocrystalline alloy and a preparation method thereof. The preparation method comprises the following steps that iron-based alloy raw materials are weighed according to a preset proportion; the iron-based alloy raw material is subjected to induction melting to obtain an alloy ingot; carrying out melt spinning on the alloy ingot to obtain an amorphous strip; the method comprises the following steps: cutting an amorphous strip, putting the cut amorphous strip into a porcelain boat, putting the porcelain boat into a non-heating area of a tubular furnace, repeatedly vacuumizing the tubular furnace, introducing nitrogen, finally maintaining a circulating nitrogen atmosphere in the tubular furnace, when the heating area of the tubular furnace is heated to a preset temperature of 600-900 DEG C, pushing the porcelain boat into the heating area of the tubular furnace, and preserving heat at the preset temperature for 10-80 seconds, and then the porcelain boat is quickly pushed back to the non-heating area for cooling. The iron-based amorphous nanocrystalline alloy has good amorphous forming ability and a wide annealing temperature window, the iron-based amorphous nanocrystalline alloy prepared through the preparation method can have high saturation flux density and low coercive force at the same time, and the iron-based amorphous nanocrystalline alloy is suitable for large-scale industrial production.

The utility model relates to an electromagnetic switch and storage box, including electromagnet subassembly and permanent magnet subassembly, electromagnet subassembly includes at least two in first direction sequential interval arrangement's magnetic core, wherein two adjacent magnetic core is first magnetic core and second magnetic core, and the first magnetic core and second magnetic core are wound with coil, and permanent magnet subassembly has at least first magnetic pole, second magnetic pole, third magnetic pole and fourth magnetic pole.

The utility model relates to the technical field of water purification, in particular to a filter bottle of a water purifier and the water purifier. The filter bottle of the water purifier comprises a filter bottle shell, a central pipe and an annular sealing piece, the central pipe is arranged in the filter bottle shell and used for leading out filtered water in the filter bottle shell, the annular sealing piece is arranged at the end of the central pipe in a sleeving mode, and the annular sealing piece abuts against the end face of the central pipe. Due to the fact that the annular sealing piece arranged at the end of the central pipe in the sleeving mode abuts against the end face of the central pipe, positioning assembly between the annular sealing piece and the central pipe is guaranteed, an annular groove does not need to be formed in the periphery of the end of the central pipe to position the annular sealing piece, and therefore the wall thickness of the central pipe can be reduced, and cost is reduced. And the diameter size of the central pipe is effectively reduced, so that the small-diameter central pipe can be produced, and the requirements of a filter bottle of a water purifier and miniaturization of the water purifier are met.

The utility model discloses a motor integrated variable vacuum capacitor, which comprises a vacuum capacitor and a motor, the vacuum capacitor comprises two electrode groups and a positioning rod fixed on one electrode group, and an output shaft of the motor is directly connected with the positioning rod in a threaded manner. The motor is used for driving the positioning rod to do linear motion in the axial direction through the output shaft so as to change the relative position of the two electrode sets. According to the utility model, by adopting the integrated structure design and installation mode that the output shaft of the motor is directly connected with the positioning rod of the vacuum capacitor, the influence of connecting pieces and mutual fit clearances thereof on the position of an electrode group of the variable vacuum capacitor is reduced, the capacitance precision of the variable vacuum capacitor is improved, and the volume of the variable vacuum capacitor is greatly reduced; and meanwhile, the manufacturing cost is reduced, and the requirements on high capacitance precision and miniaturization of the variable vacuum capacitor in the field of semiconductor manufacturing equipment are met.

The invention relates to the technical field of laser packaging, and discloses a laser packaging device. The laser packaging device comprises an optical assembly, the optical assembly comprises a box dam and an optical piece, the optical piece is arranged at the top of the box dam, and a first conductive layer is arranged at the bottom of the box dam; a groove is formed in the substrate, a second conducting layer is arranged on the outer edge of the groove, a third conducting layer is arranged at the bottom of the groove, a fourth conducting layer and a fifth conducting layer are arranged on the back face of the substrate, the second conducting layer is electrically connected with the fourth conducting layer, and the third conducting layer is electrically connected with the fifth conducting layer; the chip is arranged in the groove, the chip comprises a first electrode located at the bottom and a second electrode located at the top, the first electrode is electrically connected with the third conductive layer, and the second electrode is electrically connected with the second conductive layer through the first conductive layer. According to the laser packaging device provided by the invention, a traditional bonding wire electrical connection chip is omitted, space and point positions required by bonding wire welding are saved, and the requirement of miniaturization of a laser is further met.

The application discloses a printed board connector and relates to the technical field of electric connectors. The connector comprises a shell, a contact piece, a tail screw cap, a printed board, a grounding wire, a grounding screw, a pouring layer and a plugging body. The rear end of the shell has an inner cavity, and a lateral groove extending to the rear end face in the axial direction is formed in the side wall of the shell. One part of the printed board is electrically connected with the contact piece, and the other part is led out of the shell through the lateral groove. The grounding wire is connected with the grounding layer of the printed board and is connected with the grounding screw after passing through the wire hole on the partition plate of the tail screw cap, and the grounding screw is screwed into the threaded hole of the partition plate. The rear end pouring cavity of the tail screw cap is provided with the pouring layer, and the lateral groove is provided with the plugging body. The printed board is led out through the lateral groove to replace the traditional wire harness, and the tail space and weight are greatly reduced. The low-impedance grounding path is formed by the grounding wire, the grounding screw, the tail screw cap and the shell, and reliable shielding grounding is achieved.

The application relates to the technical field of vehicle engines, and discloses a vehicle engine system and a vehicle, which comprise: a cylinder body provided with a water jacket cavity for containing cooling liquid, the side wall of the cylinder body is provided with a water jacket water outlet, the water jacket water outlet is communicated with the water jacket cavity; a cylinder head arranged at the top of the cylinder body, the cylinder head is provided with a water inlet channel, the water inlet channel is communicated with the water jacket cavity; an EGR cooler provided with an EGR water inlet and an EGR water outlet, the EGR water inlet is communicated with the water jacket water outlet, the EGR water outlet is communicated with the water inlet channel, the cooling liquid in the water jacket cavity is guided out of the EGR cooler through the water jacket water outlet and is guided back into the water jacket cavity through the water inlet channel. Therefore, by directly connecting the EGR cooler with the water jacket cavity, the pipeline integration degree of the engine system is higher, the product miniaturization requirement can be met, and the cost is reduced.

The utility model discloses a kind of breast pumps, it is related to maternal and infant articles technical field, wherein, breast pump includes host computer, breast shield, milk storage container and dust cover;Host computer includes negative pressure pump mechanism;Breast shield includes the flange of adhering breast and the milk outlet of discharging milk into the milk storage container, negative pressure pump mechanism can directly or indirectly cause negative pressure to be generated in breast shield, to provide suction power for breast pump;Host computer, milk storage container, breast shield mutually cooperate and form integrated all-in-one breast pump complete machine;Dust cover and breast pump complete machine at least include two assembly forms, under the first assembly form, dust cover covers in breast shield to provide dustproof function;Under the second assembly form, dust cover is assembled or cooperated with breast pump complete machine, to support breast pump complete machine to keep upright or prevent the attitude of milk liquid overflow.The utility model provides breast pump, solved the problem that milk liquid is easy to flow out from exhaust structure, improve the use experience of user.