46results about How to "No added bulk" patented technology

The invention discloses a high-resistance surface metamaterial waveguide slot antenna. The metamaterial waveguide slot antenna comprises a metamaterial waveguide tube and a radiation gap, wherein the metamaterial waveguide tube comprises a metal waveguide tube and a dielectric plate, the metal waveguide tube is a through tube with a rectangular cross section, the radiation gap is arranged in an upper surface of the metal waveguide tube, one end of the metal waveguide tube is opened and is used as a signal input port, the other end of the metal waveguide tube is closed and is in a short-circuit state, the dielectric plate is arranged on a wide edge of a lower part of an inner wall of the metal waveguide tube along a length direction, a periodic pattern is etched on a surface of the dielectric plate. By the antenna, low-loss radiation can be achieved in a working frequency band, and the antenna is high in efficiency; and by the antenna, dual-band suppression outside the working frequency band can be achieved, the characteristic of the antenna is equivalent to that of a high-pass filter when electromagnetic interference of a low frequency band is suppressed, and the characteristic of the antenna is equivalent to that of a band rejection filter when electromagnetic interference of a high frequency band is suppressed.

The invention discloses a normal temperature bonding technology-based microminiature fuel cell encapsulation method, which belongs to the technical field of processing and systems of microfluids and micromachining. A polar plate surface after being processed by oxygen plasma is bonded to a flow field sealing washer of a micro-proton exchange membrane fuel cell (PEMFC) so as to realize ordered assembly of a cell component by bonding or using a solid adhesive tape. A boding interface between a silicon polar plate and the flow field sealing washer and an adhesive on the solid adhesive tape provide a pressure required for fastening the cell component. A layer of diaphragm seal is deposited on the surface of the cell body of the micro-PEMFC to realize complete sealing of the micro-PEMFC and achieve an effect on protecting the cell body. The method reduces moveable components in the cell body, reduces difficulties in encapsulation, avoids performance reduction of a proton exchange membrane because of the damage which is caused by high-temperature dehydration, avoids the pollution to MEA and other cell components, does not need to use a positioning clamp for clamping, does not increase cell device volume, and simultaneously ensures the reliability of a cell.

This invention relates bearing self- lubricating device for gearbox. It includes: guiding board arranged on the inner face of gear box; guiding groove laterally arranged on the bearing seat of upper gear; lubricating oil cavity arranged between bearing seat and outer face of bearing; oil inlet opening connecting lubricating oil cavity and guiding groove. The guiding board is composed of transverse guiding board and two standing guiding boards. Both ends of transverse guiding board connect with superior end of each standing guiding board respectively. The bottom of each standing guiding board connects with external end of guiding groove on corresponding bearing. The interior end of each guiding groove opens to superior end of corresponding oil inlet opening. The bottom of oil inlet opening opens to the top of corresponding lubricating oil cavity. This invention is simple and maintenance-free. The lubricating oil can be circular provided for a long time.

The invention discloses a USB female base with a built-in mechanical switch, which comprises a metal shell (1) used for encapsulation and equipped with an front opening, a tongue-shaped fixation base (3) installed inside the metal shell, and a metal pin (4) inlaid in the fixation base, wherein a boss (5) is disposed on the rear part of the fixation base, a groove is disposed in the boss, a switch is inlaid in the groove, a key part (6) of the switch is extruded from inside of the boss to the part above the metal pin, and a front end of a USB plug can trigger the key part in order to trigger the switch when the USB plug is inserted in the USB female base. The USB female base with the built-in mechanical switch disclosed by the invention is small in volume, and can be installed like a common female base. The switch is reliable in work and can be used widely, wherein (1) the switch can be connected into a VCC or a GND of the USB female base in order to realize on-off control of a power source end; (2) as an independent switch, the switch can also be connected into an applicable circuit to realize circuit control; and (3) a circuit with power consumption can be thoroughly disconnected by the switch in order to realize the zero power consumption at a stand-by state.

The invention relates to the field of spraying devices, and discloses an external spring type spraying gun head with a double one-way valve structure. The external spring type spraying gun head comprises an installation base (2), and a trigger (1), a spring piece (3), a piston (100), a nozzle (300) and a cover body (10) which are installed on the installation base (2); the installation base (2) comprises a piston sleeve (4) for installing the piston (100), the piston (100) is installed in the piston sleeve (4) in a sealed mode, and the trigger (1) is installed on the installation base (2) andcan rotate around the installation base (2); and one end of the piston (100) is connected with the trigger (1), the trigger (1) drives the piston (100) to reciprocate, one end of the spring piece (3)is installed on the installation base (2) and the cover body (10), and the other end of the spring piece (3) is installed on the trigger (1) and used for collecting elastic potential energy to enablethe trigger (1) and the piston (100) to return automatically. The external spring type spraying gun head has the advantages of being long in service life, compact in structure, small in number of parts and convenient to install.

The invention relates to a current transformer based on an active-compensation external magnetic field. The technical characteristics are as follows: two pairs of measurement windings and compensation windings orthogonal to each other, namely, a measurement winding and a compensation winding in the X-axis direction and a measurement winding and a compensation winding in the Y-axis direction, are wound outside the current transformer; the two pairs of measurement windings and compensation windings are equal in number of turns and opposite in direction; and the two pairs of measurement windings and compensation windings respectively constitute an external magnetic field active compensation circuit in the X-axis direction and an external magnetic field active compensation circuit in the Y-axis direction. According to the invention, two pairs of measurement windings and compensation windings orthogonal to each other are wound outside the current transformer. Through the external magnetic field active compensation circuit between the two windings, the influence of an external magnetic field can be compensated actively. Therefore, the work error of the current transformer caused by the influence of an external magnetic field is reduced greatly, the stability of the current transformer is improved, the immunity to interference of an external magnetic field and precision of equipment are improved, and the effect of magnetic shielding is improved greatly.

The invention discloses an active fault-tolerant control method for an electric control suspension system of a whole vehicle. The method is based on fault diagnosis and fault-tolerant control technologies, is applied to a general electric control suspension system, and comprises the following steps: (1) establishing a kinetic model of the electric control suspension system of the whole vehicle; (2) performing active fault-tolerant control when a sensor system fails; (3) adopting a hybrid control strategy of an electric control suspension controller considering vehicle driving smoothness and handling stability; (4) judging whether an actuator and the controller of an electric control suspension system break down at the same time; (5) giving an alarm when the controller breaks down; and (6) performing active fault-tolerant control when the actuator breaks down. According to the invention, active fault-tolerant control can be realized when the sensor, the actuator and the controller in the electric control suspension of the whole vehicle fail, so that the reliability of an electric control suspension system of a vehicle provided with the electric control suspension can be effectively enhanced, and switching of riding comfort and handling stability can be completed according to actual needs.

The invention discloses a combined magnetic attracting type wireless charger. The problems that the thickness and size of the whole wireless charger are correspondingly increased and are inconvenientto carry due to the fact that only one group of charging coils for rapid charge or normal charge exists in the conventional wireless charger and the wireless charger only has the function of rapid charge or normal charge and a corresponding rapid charge component and coil are increased inside the wireless charger when the wireless charger needs to support the rapid charge function, and the existing wireless charger is adopted by virtue of electrification of the external USB (Universal Serial Bus) charge line and cannot completely get rid of the charge line and cannot be used at any time and any place can be solved. The wireless charger comprises a shell and a charging panel mounted in a middle part of the shell; a clamp sleeve is mounted on a side wall of the shell; a PLC (Programmable Logic Controller) is embedded on an outer wall of the top of the clamp sleeve; and one side of the PLC is provided with a storage battery embedded in the outer wall of the top of the clamp sleeve.

The invention relates to a mute diesel engine generator, in particular to a high power density mute diesel engine generator. The high power density mute diesel engine generator can be applied to the narrow space and high-temperature and low-temperature severe environments. The high power density mute diesel engine generator comprises a mute box body and a power generator assembly, wherein the power generator assembly can be held in the mute box body. The high power density mute diesel engine generator further comprises a heat dissipation air channel. Due to a noise reduction structure with a muffler and the mute box body, the mute effect is further enhanced. Due to the fact that the independent heat dissipation air channel is designed under the condition that the size of the diesel engine generator is unchanged, the requirement for heat dissipation of the diesel engine generator is met, and the size and the weight of the diesel engine generator are not increased.

The invention discloses a diluted liquid leaching method for wet type indium smelting. The diluted liquid leaching method comprises the following steps of step 1, adding magnesium oxide into a dilutedsulfuric acid leaching liquid, adjusting the pH (potential of hydrogen) value of the diluted sulfuric acid leaching liquid to 0.8 to 1.5, and leaching out the impurity components in the diluted sulfuric acid leaching liquid, so as to obtain the settled impurities and the purified diluted sulfuric acid leaching liquid; step 2, separating the settled impurities and the purified diluted sulfuric acid leaching liquid by a filter press method. The diluted liquid leaching method has the advantages that the pH value of the solution in the diluted liquid leaching step is increased by the magnesium oxide, the volume of the reaction system is not increased, the drainage amount of sewage is greatly reduced, and a foundation is provided for the sealed type indium smelting method without adding of reaction system and drainage of sewage.

The invention discloses a conductive slip ring integrating circular inductive synchronizer and a preparation method thereof. A base is fixed to a rotor base plate, a lower ring, an insulting sheet, an upper ring and a pressure plate sleeve the base, each of the upper and lower rings is provided with a V-shaped annular groove, and connection lines are led out from the upper and lower rings by means of welding and connected with rotor excitation input lines. A brush wire seat is fixed to a stator base plate, tail ends of upper and lower brush wires penetrate wire through holes of the brush wire seat to be inserted into the V-shaped annular grooves of the upper and lower rings, and connection lines are led out from the upper and lower brush wires by means of welding to serve as input signal lines. Since the input signal lines are finally connected with rotor excitation input ends, excitation signals can be applied to the input signal lines to drive a rotor to operate. The problem of twisting of rotor outgoing lines is solved during operation while increase of system volume and electromagnetic interference are avoided, and great convenience is brought to application of circular inductive synchronizers.

The invention discloses a detection method for detecting a blocked or unlocked state of a parking brake member comprising a bistable linear electromagnet (1). The parking brake member being connectedboth to a power supply assembly (14) arranged to generate a control voltage (Uc) and to a current sensor (15) arranged to measure a control current (Ic), the control voltage (Uc) being greater than the control current (Ic). The detection method comprises the steps: controlling the power supply assembly (14) to generate a test voltage (Utest) across the terminals of the coil and thus a test current(Itest) flowing in the coil, the test voltage having an amplitude less than a predetermined voltage threshold such that a test magnetic field generated by the test current does not shuttle; acquiringa measurement of the test current as generated by the current sensor (15); and analyzing the measurement of the test current and detecting a blocked or unlocked state of the parking brake member based on this analysis.