108results about How to "Reduce touch points" patented technology

The invention discloses a wireless earphone, a charging box and a wireless earphone charging system. The wireless earphone comprises: a charging port which is configured to access an earphone chargingvoltage and receive/transmit a communication signal; a communication switching circuit which comprises a first input/output end and a second input/output end, wherein the first input/output end is connected with the charging port, the communication switching circuit is switched to be in a closed state when earphone charging voltage is accessed to the charging port, and is switched to be in an open state when a communication signal is accessed to the charging port; a communication switch circuit which is connected with the second input/output end of the communication switch circuit; and an earphone control circuit which is configured to carry out boxing detection on the wireless earphone and generate a corresponding detection signal so as to control the communication switching circuit to connect/disconnect the earphone control circuit with/from the communication switching circuit according to the detection signal. According to the invention, reuse of charging and communication of the charging port is realized, and contact points between the wireless earphone and the charging box can be reduced.

The invention relates to a high-conductivity and low-temperature cured conductive paste and a preparation method thereof. The high-conductivity and low-temperature cured conductive paste comprises conductive metal powder, a nanometer conductive carbon material, cured resin and a curing agent. The conductive paste is connected with the conductive metal powder by means of structure characteristic ofthe nanometer conductive material to form a three-dimensional continuous conductive passage, a material capable of being liquefied or sintered at a low temperature is utilized, a connection effect between the conductive metal powder and the nanometer conductive carbon material is improved, so that the resistivity of the conductive paste reaches microohms.cm scale and is approximate to that of a favorable conductor such as silver and copper.

An optimal design method of a low-wear high-speed train wheel profile is characterized in that a curve of the high-speed train wheel profile is divided via equal arc length, N discrete coordinate points are used as data points, and a wheel profile curve is reconfigured; vertical coordinates of N data apexes are used as design variables, a circuit average for reducing wheel wear consumption and wheel track transverse force are used as target functions, wheel profile wear statistics and concavity and continuity of the profile curve are used as geometric constraints, a high-speed train wheel profile multi-target optimization model is established, and the model is subjected to multi-target optimizing calculation. Results show that contact points of a rim portion of the profile and the side of a track are significantly reduced, and line average of each single wheel for low wear consumption is 26.8% lower than that of the original standard profile; the wheel track transverse force of the wheel is reduced; root-mean-square values of the wheel track transverse forces of left and right wheels are decreased by 17.6% and 18.3% respectively; root-mean-square values of maximum contact stresses of the left and right wheels are decreased by 21.6% and 19.8% respectively; root-mean-square values of derailment coefficients of the left and right wheels are decreased by 9.5% and 6.2% respectively.

The present invention relates to a new technological process of preventing refined salt from caking. Trace amount of potassium ferrocyanide is added into saturated refined salt solution of pH 7-9 to prepare material solution with potassium ferrocyanide content of 1.0-3.0 mg/L, and the solution is evaporated to concentrate in evaporating crystallizer in the evaporation strength of 0.2-0.4 kg water/hr.L while controlling the material slurry concentration in not higher than 10 vol%, so as to obtain refined salt without caking. The refined salt has potassium ferrocyanide content not higher than 10 mg/kg. The said process is obviously superior to traditional production process.

The invention relates to a double-clad active optical fiber. Aiming at the defects in the prior art, the invention provides a realization method of an air gap clad optical fiber. The realization method adopts air as an optical cladding layer and adopts a core layer with a novel structure, so that the realization method can be used for improving an energy transmitting optical fiber or a photonic crystal optical fiber of an air cladding layer; the manufacturing process is simplified, the manufacturing cost is reduced and the pumping coupling efficiency is improved. The realization method is characterized in that the optical fiber is formed by a core layer with a polygonal section, the air cladding layer, an inner protection layer with a circular section, and an outer protection layer with a circular section in sequence from inside to outside; the core layer is connected with the inner wall of the inner protection layer with the circular section through the top of a polygonal structure; and an air gap between the inner protection layer and the core layer is the air cladding layer of the optical cladding layer. The double-clad active optical fiber solves the problem of low numerical pore diameters of the conventional high-energy transmission optical fiber and a double-clad optical fiber, and the high-temperature resistance of a low-refractive-index coating material, can improve the structure and the performance of the air cladding layer of the photonic crystal optical fiber, improves the optical fiber production efficiency, and greatly propels application of the optical fiber on the aspects of kilowatt and myriawatt high-energy transmission, a high-power laser system and the like.

The invention discloses a nano-scale insulation board and a manufacturing method thereof. The board body is manufactured by coating a thermal insulation material in a non-woven fabric and packaging the thermal insulation material in a packaging bag in a vacuum seal mode. The thermal insulation material comprises the following raw materials in percentage by weight: 70 to 80 percent of nano-scale fumed silica, 1 to 3 percent of reinforced fiber, 1 to 3 percent of far infrared additive, 12 to 18 percent of silicon carbide, 0.8 to 1.2 percent of drying agent and 5 to 10 percent of adhesive, wherein the heat conductivity coefficient is less than or equal to 0.008W/(m.K). Due to detection, the heat conductivity coefficient of the product is less than 0.008W/(m.K), the heat preservation and heat insulation performances are high, the product is light, the defects that the traditional wall heat preservation building materials have poor fireproof performance, poor heat preservation and heat insulation performances and low crack resistance can be overcome, and the nano-scale insulation board can be widely applied to heat preservation and heat insulation roofs of buildings, outer-wall external thermal insulation and outer-wall internal thermal insulation construction.

The invention relates to a compound type powder waterproof agent and a preparation method thereof. The compound type powder waterproof agent comprises raw materials of stearate, lignin, hydroxymethyl, calcium substances and silicon dioxide. The compound type powder waterproof agent disclosed by the invention is identical with cement in property and belongs to a rigid inorganic compound cement additive. The compactness and the impermeability of cement and cement mortar in which the compound type powder waterproof agent is added are greatly enhanced; and a three-dimensional water resistant mode is formed, and thus the waterproof effect is excellent and the strength of the concrete is improved by 20-30 percent.

The invention discloses a lithium ion battery pole piece and a preparation method therefor, and a lithium ion battery. A layer of isolating binder with a relatively low melting point is coated on the surface of a positive electrode or a negative electrode; when a positive pole piece and a negative pole piece are in contact, the isolating binder coatings are in contact, and a positive electrode active coating and a negative electrode active coating are not in contact; therefore, the positive electrode active coating and the negative electrode active coating have less contact points in a condition of an internal short circuit, so that the positive electrode active coating and the negative electrode active coating are not burnt immediately; in addition, the separating binder coating is melted to be covered on the surfaces of the pole pieces in a temperature-rising process caused by the internal short circuit, so as to effectively prevent reaction; and in addition, the coating is the binder with the lower melting point, the binder is melted with the increase of the temperature in the condition of external short circuit, and the melted binder can be effectively covered on the surfaces of the pole pieces to prevent from short circuit caused by the contact between the positive electrode and the negative electrode due to the diaphragm rupture.

The invention discloses a pneumatic conveying device for conveying laminar materials, which is mainly composed of a metering, air locking and blanking part and a part of conveying air into a kiln; the metering, air locking and blanking part comprises a buffer blanking bin, wherein the lower port of the buffer blanking bin is connected with a rotary blanking device; two kick-out devices arranged up and down are transversely arranged in the buffer blanking bin, and the axle centers of the two kick-out devices are respectively situated at the two sides of a central line in the buffer blanking bin; and comb-shaped material kick-out teeth are arranged on a rotating shaft of the kick-out device, and the comb-shaped material kicking teeth are staggered with each other. The part of conveying air into the kiln comprises a roots blower connected with an air conveying pipeline; the rotary blanking device of the metering, air locking and blanking part is connected with the air conveying pipeline through a blanking chute; and the other end of the air conveying pipeline is connected with a multi-passage combustor of a cement kiln precombustion furnace or a cement kiln front. The pneumatic conveying device for conveying laminar materials, disclosed by the invention, can effectively convey glass fiber reinforced plastic composite materials serving as cement to replace fuel.

The invention relates to the technical field of thermal insulation materials for aerospace, and provides a composite aerogel thermal insulation material as well as a preparation method and applicationthereof. The preparation method comprises the following steps: mixing SiO2 aerogel and Al2O3 aerogel, grinding, mixing the mixed powder with water, and carrying out thermocuring in a mold to obtain acomposite aerogel thermal insulation material, wherein the SiO2 aerogel and the Al2O3 aerogel are prepared by adopting an improved sol-gel method. By doping the Al2O3 aerogel with the SiO2 aerogel, contact points among Al2O3 aerogel particles are reduced, and surface/body diffusion is inhibited, so that high-temperature sintering and alpha conversion of Al2O3 are inhibited, and the purpose of improving the high-temperature resistance and the heat insulation performance of Al2O3 is achieved. When the composite aerogel thermal insulation material is used for thermal insulation, the external temperature of the thermal insulation material is lower than 200 DEG C under the conditions that the internal temperature is 1200 DEG C and the thickness of the thermal insulation material is 1 cm, and the aviation thermal insulation requirement can be met.

The invention provides moisture-absorbing quick-drying fabric and a preparation method thereof. The fabric comprises a hydrophilic inner layer and a quick-drying outer layer, wherein the hydrophilic inner layer is composed of bottom yarn, the quick-drying outer layer is composed of surface yarn, the bottom yarn is combed cotton yarn or twisted yarn of the combed cotton yarn and polyester filamentyarn, the surface yarn is special-shaped superfine denier polyester filament yarn, and the D value and the F value in specification of the bottom yarn are both larger than those in specification of the surface yarn. The preparation method of the fabric comprises the steps that the bottom yarn and the surface yarn are woven into gray fabric, and then after-treatment is carried out on the fabric toobtain the moisture-absorbing and quick-drying fabric; wherein the fabric after-treatment comprises alkali treatment and softening treatment; alkali treatment conditions are as follows: a 1wt.%-2wt.%sodium hydroxide solution is adopted, the bath ratio is 1:50, and the treatment is carried out at 90-100 DEG C for 30-40 minutes; softening treatment conditions are as follows: a silicon-free softening finishing agent is adopted, dipping is performed for 20-30 min at the temperature of 20-30 DEG C, then drying is performed for 3-4 min at the temperature of 100 DEG C, and finally baking is performed for 1-2 min at the temperature of 170-180 DEG C. The fabric has excellent moisture-absorbing and quick-drying properties and good durability.

The invention relates to the field of intelligence toys with mobile elements, in particular to an electronic magic cube achieving communication by means of conductive signals and a using method thereof. The electronic magic cube comprises magic cube blocks (10) which are combined to form a regular polyhedron-shaped magic cube body (100). The electronic magic cube is characterized by further comprising a center sphere (4), the adjacent magic cube blocks (10) are electrically connected through a conducting medium (5), and the center sphere (4) and the magic cube blocks (10) are electrically connected through a conducting medium (5). The using method is characterized by comprising the steps of 1, angle block measurement; 2, edge block measurement; 3, middle block measurement. The electronic magic cube is simple in structure and convenient to manufacture, the problems of mobile element circuit opening and position and angle variation are solved, and the number of conducting circuits between mobile elements is reduced to the minimum.

The invention relates to a DC motor and a carbon brush thereof. The DC motor comprises a rotor and a stator, wherein the rotor comprises a rotation shaft and a commutator which is fixed on the rotation shaft, the stator comprises at least a pair of carbon brushes, the carbon brush comprises a contact surface which is used for being contacted with an arc surface of the commutator, the contact surface is of a V shape in the direction which is parallel to the axis of the rotation shaft, and the contact surface is inclined relatively to the axis direction of the rotation shaft, so the initial contact between the contact surface and the arc surface of the commutator is of the point contact, the fluctuation of the motor current can be improved, and the vibration source can be conveniently reduced so as to realize the noise reduction; and moreover, the contact points between the carbon brush and the commutator can be reduced so as to increase dBA difference value between a fundamental wave and a harmonic wave, so the speed of the motor can be calculated without a Hall element.

The present disclosure provides a terminal housing and a terminal and belongs to the terminal technical field. The terminal housing comprises a lower all-metal shell and an upper non-metal shell; theouter edge of the upper non-metal shell is wrapped with a metal frame; a first gap is left between the first side border of the metal frame and the side edge of the lower all-metal shell; the upper non-metal shell is provided with a vertical metal line; the first end of the vertical metal line is a grounding point; the second end of the vertical metal line is connected with the top border of the metal frame; and a portion between the first end of the vertical metal line and the upper edge of the first gap forms a first antenna stub; a second antenna stub of a bend line structure is disposed between the first side border and the vertical metal line; and one end of the second antenna stub is a feed point. According to the terminal housing and the terminal of the invention, the gap is formedat the side border of the terminal housing; the metal frame is adopted as a part of the antenna of the terminal; the antenna is designed to be of a bend line structure, so that a space occupied by theantenna can be decreased; and the limited clearance zone of the terminal can be utilized to design the antenna.

The present invention relates to a packing layer (10) for regulating the packing. The packing layer is provided with ripples, wherein a plurality of open channels (12, 14, 16) are formed by the ripples, wherein the channels comprises a first wave trough (22), a first wave peak (32) and a second wave peak (42). The first wave peak (32) and the second wave peak (42) define the first wave trough (22), wherein the first wave peak and the second wave peak have a first peak (33) and a second peak (43). The first peak (33) of the first wave peak (32) is provided with an insulation element (34) which extends in the direction of the first peak (33). The first wave trough (22) is provided with a trough base (23), wherein the insulation component (34) is provided with an edge (35). Compared with the first peak (33) of the first peak (32), a larger vertical distance is provided between the edge (35) and the trough base (23) of the wave trough (22).

An air blocking net and spring piece assembly comprises one or more air blocking net fixing frames, one or more spring pieces and one or more air blocking net fixing supports. The rear ends of the airblocking net fixing frames and the air blocking net fixing supports are rotatably connected together; each air blocking net fixing frame is provided with one or more clamping-connection grooves, thespring pieces are connected into the clamping-connection grooves in a clamped mode and each comprise one or more spring contact arcs and one or more spring sliding arcs; and each spring contact arc abuts against a guiding rail, and the spring sliding arcs always slide in the air blocking net fixing frames.