45results about How to "No noise" patented technology

This invention provides a coaxial, low-noise, smooth, slow-rebound torsion spring hinge. It utilizes the release of elastic force after the torsion spring is twisted to achieve automatic rebound during hinge closure, while simultaneously using the resistance of a hydraulic damper to reduce the impact force during hinge closure. In particular, the structure of the buffer component that works in conjunction with the hydraulic damper has been improved, featuring a spiral slide and ball bearings to enable the buffer component to function with extremely low friction, eliminating frictional noise at the mating surfaces of the buffer component, and resulting in better smoothness during hinge rotation.

The application belongs to the technical field of electric appliance circuit, and particularly relates to a sound equipment and an audio power amplifier static current adjusting method, which comprises a playing assembly, the playing assembly comprises a shell, an adjusting device is arranged on the inner side of the shell, and the sampling end of the adjusting device comprises a digital potentiometer, a seventh resistor, a seventh NPN triode, a connection upper end and a connection lower end. The audio power amplifier in the existing sound equipment can change the static current after temperature change due to the triode characteristics, which not only affects the hearing and the index, but also can cause the power amplifier burning in the case of positive feedback of temperature and current in the serious case. The traditional audio power amplifier often uses a temperature-sensitive resistor to stabilize the static current, and the working principle determines that the static current cannot be accurately maintained, and only the working range can be ensured. Moreover, due to the temperature sampling point, the effect is often poor.

This invention provides an active front hatch cover hinge and a pedestrian protection system, belonging to the field of automotive component technology. It includes: a cover seat with a locking block; a pop-up seat rotatably connected to the cover seat; a locking plate hinged to the cover seat and rotatable about its hinge point on a rotational plane, the locking plate having a locking hook; and a tension spring, one end of which is connected to the locking plate and close to the locking hook, the other end of which is connected to the pop-up seat, the tension spring being inclined to the rotational plane of the locking plate. The advantages of this invention are: the hinge can actively pop open the front hatch before a vehicle collision; the pop-up seat can only unlock by pulling the locking plate through the tension spring when subjected to a lifting force; under normal conditions, the pop-up seat remains locked to the cover seat; and the pop-up release structure of the hinge is reversible and reusable.

This invention discloses a small water circuit switching structure, including a main body with a water inlet channel, a water distribution chamber, and at least two water outlet channels that can cooperate with each other. It also includes: a switching disc disposed within the water distribution chamber, capable of axial and radial movement within the chamber, and able to open and close the water inlet of the water outlet channels; a guide post disposed around the periphery of the switching disc; a first guide inclined surface located around the periphery of the switching disc, with the guide post engaging with it; a second guide inclined surface located around the periphery of the switching disc, with the guide post engaging with it; and a spring engaging with the main body and the switching disc. The engagement of the guide post with the first and second guide inclined surfaces enables the switching disc to rotate. This switching assembly occupies a small space.

The utility model provides a lifting support of a vehicle-mounted sound system, which comprises a shell, a driving seat installed in the shell in a lifting mode and a lifting platform located on the upper side of the shell and connected with the driving seat, guide rods used for guiding the driving seat are symmetrically installed in the shell, guide sleeves are symmetrically installed on the driving seat, and the lifting platform is connected with the guide rods. The guide rods are arranged in the corresponding guide sleeves in a penetrating manner; a containing groove is formed in the driving base in a penetrating mode, the guide sleeve is arranged in the containing groove, a gap is formed between the guide sleeve and the inner wall of the containing groove, the guide sleeve is sleeved with an elastic component, and the elastic component abuts against the inner wall of the containing groove under the action of elastic force. The lifting support of the vehicle-mounted sound equipment overcomes the defects that an existing lifting support of the vehicle-mounted sound equipment is prone to shaking and noise, and the guide rod is prone to being clamped.

The invention discloses a copper-based powder metallurgy friction material containing composite iron powder and a preparation method of the copper-based powder metallurgy friction material. The friction material is prepared from, by weight, 45%-60% of electrolytic copper powder, 10%-20% of the composite iron powder, 10%-15% of granular graphite, 1%-5% of barite, 3%-6% of tungsten oxide, 2%-4% of high-carbon ferrochrome, 2%-4% of silicon dioxide and 1%-2% of porous zirconium carbide ceramic. Compared with the prior art, the friction material has the positive effects that the iron powder prepared by two different processes is added into the friction material, and optimal granularity matching is carried out, so that the strength and the hardness of the material are improved, and meanwhile, the noise generated in the braking process is effectively reduced. According to the invention, the porous zirconium carbide ceramic is added into the friction material, so that the heat resistance of a brake pad can be improved, the stability of a friction coefficient is ensured, and vibration and noise during braking are reduced.

The utility model relates to electronic equipment technical field, concretely relates to a kind of integrated heat pipe's case structure and electronic equipment.Case mechanism includes: mounting substrate, the mounting substrate is used to install board card module;Radiating side plate, the radiating side plate is installed in one end of the mounting substrate;Heat pipe, the heat pipe is laid on the mounting substrate upper end and the radiating side plate inner side, can be the heat generated by the board card module is transferred to the radiating side plate;Natural radiator, the natural radiator is installed in the outer side of the radiating side plate, can be through heat pipe baseplate to board card module and case body radiate heat, and heat dissipation efficiency is high, and the noise caused by fan, with the characteristics of long equipment life and not need equipment internal power supply.Electronic equipment includes the integrated heat pipe's case structure of preceding described;Board card module is provided with multiple, each board card module is arranged in parallel with the radiating side plate, and multiple board card module longitudinal row material is arranged on the mounting substrate.

This invention discloses a microchannel heat exchanger driven by an electrohydrodynamic (EHD) pump, characterized by comprising an EHD pump unit and a microchannel heat exchange unit; the EHD pump unit includes a pair of emitter / receiver electrodes, alternately arranged along the flow direction at the bottom of the microchannel, and several EHD pump units are connected in series to form a multi-stage electrode array; the microchannel heat exchange unit includes a jet port and an array-arranged microchannel; the dielectric liquid generated by the EHD pump is directly sprayed into the microchannel heat exchange region through the jet port; the EHD pump unit and the microchannel heat exchange unit are integrated in the same substrate, so that the electrode arrangement area and the heat exchange channel area form a continuous flow path.

This utility model relates to the field of ice maker technology, specifically an ice maker utilizing semiconductor refrigeration. An ice maker utilizing semiconductor refrigeration includes an upper cover assembly, a water tray, an inner cover, a cold plate, a radiator, an insulated outer shell, a base, and a bottom cover. Its features include: the bottom of the insulated outer shell is connected to the base; a cold plate is located inside the insulated outer shell; a water tray is located inside the cold plate; the top of the cold plate is connected to the inner cover; and the upper cover assembly is connected above the inner cover. A radiator is located below the cold plate, and a cooling fan is located on one side of the radiator. The base contains a drive circuit board and a DC power supply, which is connected to a power cord. Compared with existing technologies, this ice maker utilizing semiconductor refrigeration optimizes the semiconductor refrigeration module design, improves the heat exchange system, and combines an advanced temperature control scheme to achieve fast ice-making speed, high ice-making quality, ease of use, and low energy consumption.

A novel roving guide roller assembly, belonging to the technical field of spinning equipment, includes a locking rod and two guide roller structures. Each guide roller structure comprises a guide roller body, two imitation conical retaining rollers, a bearing, a guide roller spindle, and a circular baffle. The guide roller body has a central circular hole, with the bearing housed within it. One end of the guide roller spindle is inserted into the bearing, and the other end extends outward from one side of the circular hole. A circular baffle covers the other side of the circular hole. The locking rod includes a locking main rod, a fixing connecting ring, a connecting seat, a screw hole A, a right-angle connecting rod, and a screw hole B. The top of the guide roller spindle has a threaded structure, and the two guide roller spindles are respectively fixed in screw holes A and B via the threaded structure. The advantages of this invention are: high efficiency, uniform rotation speed, no snagging, sticking, or jamming, and long service life.

The present application relates to electric heating technology field, disclose a kind of using infrared super high efficiency electric heating, including shell, hot air duct, infrared conversion mechanism and infrared heating mechanism;Infrared conversion mechanism is arranged at the periphery of infrared heating mechanism, forms heat exchange cavity;The present application not only utilizes the heat generated by infrared heating mechanism itself to heat air, but also through the infrared conversion mechanism of outside, intercepts and absorbs the infrared generated by infrared heating mechanism, generates more heat, greatly improves the heating effect, and the thermal efficiency is higher;The bottom of the device is provided with universal wheel, which can be easily moved to the use area, is very flexible and convenient, and is more convenient to use;There is a heat insulation cavity between the side pipe wall of hot air duct and the shell wall, and a limiting guide plate and a point-break type heat insulation hole are arranged between the tuyere pipe wall and the shell, which maximally reduces the heat transfer to the shell, causes the shell to overheat, and generates a safety hazard for the user, and the safety is higher.

The present disclosure provides a gravity-assisted heat dissipation device, comprising an evaporator, a horizontal pipe, a vertical pipe and a condenser; the evaporator is arranged above and in contact with a component to be cooled, so as to vaporize working medium in the evaporator by using heat of the component to be cooled; an outlet of the evaporator is connected with a first connecting end of the horizontal pipe; a second connecting end of the horizontal pipe is connected with a first connecting end of the vertical pipe; the horizontal pipe is used for transmitting working medium; the distance between the first connecting end of the horizontal pipe and a horizontal plane is less than the distance between the second connecting end of the horizontal pipe and the horizontal plane; a second connecting end of the vertical pipe is connected with a bottom of the condenser; the vertical pipe is used for transmitting working medium; the distance between the second connecting end of the vertical pipe and the horizontal plane is greater than the distance between the first connecting end of the vertical pipe and the horizontal plane; and the condenser is used for liquefying working medium in a vaporized state.

The utility model discloses a guide rail structure provides a simple structure, the low manufacturing cost can change the track corner automatically according to the use demand variable angle continuous guide rail structure and the massage seat with the variable angle continuous guide rail structure of having, solved the existing technology in the variable angle continuous guide rail cost high, the complex structure, the poor stability etc. technical problem, it includes the base body and the pressure walking mechanism of being located on the base body, is suspended with the elastic track on the base body, and the pressure walking mechanism is walked on the elastic track through the walking gear engagement.

The present application relates to the technical field of lock, in particular to a magnetic mute lock body, which comprises a lock shell, a buckle seat, a lock tongue, a lock opening driving part, the inner side of the buckle seat is provided with a first magnetic block, the lock shell is further provided with a pressure increasing assembly and a second magnetic block which can repel the first magnetic block and move, the pressure increasing assembly has an input rod connected with the second magnetic block and an output rod connected with the lock tongue, the first magnetic block is arranged on the inner side of the buckle seat, the second magnetic block which can repel the first magnetic block is arranged in the lock shell, the second magnetic block and the lock tongue are drivingly connected through the pressure increasing assembly, after the door is closed, the input rod of the pressure increasing assembly is moved due to the repulsion between the second magnetic block and the first magnetic block, then the lock tongue is inserted into the buckle seat through the output rod of the pressure increasing assembly, and because the thrust of the output rod on the lock tongue is greater than the thrust of the second magnetic block on the input rod, the lock tongue can be easily extended from the lock shell and locked with the buckle seat, the locking process of the lock tongue is more stable and no noise caused by the collision of the magnetic blocks.

An inductor structure and its manufacturing method include: at least two solder pads; a wound helical coil disposed on the upper surface of the at least two solder pads, and the two ends of the wound helical coil being electrically connected to the at least two solder pads respectively; and a covering layer covering the wound helical coil and the at least two solder pads, and exposing the lower surface of the at least two solder pads.

This invention discloses a room-temperature self-sustaining vacuum zero-point energy array power generation device, belonging to the fields of quantum clean energy and micro-nano power generation technology. This invention solves the technical problems of traditional vacuum energy power generation, such as low efficiency, the need for vacuum pumps, the requirement for low-temperature superconductivity, energy recirculation, and the inability to output net power. The device consists of a permanently sealed vacuum Casimir trapping array, an asymmetric piezoelectric resonant amplification layer, a unilateral directional magnetic shielding energy-locking layer, and a room-temperature quantum rectification output layer. It utilizes silicon-glass anode bonding to achieve a 30-year long-term high vacuum. Through nano-spacing plates, room-temperature rectification, and a unidirectional energy-locking structure, it stably extracts vacuum zero-point energy and outputs net electrical energy under pump-free, cooling-free, and superconducting conditions. This invention can be mass-produced at the wafer level and can be stacked for expansion. A 1-square-meter module can output 280W to 650W net power. It has advantages such as zero fuel, zero emissions, long lifespan, self-sustainability, and applicability to all scenarios. It can be widely used in household power supply, industrial power, aerospace energy, and distributed power grids, and is a sustainable clean energy system that can be engineered and implemented.

This utility model discloses a microbubble generator, comprising: a dissolved gas tank, wherein a partition with multiple diversion holes is provided inside the dissolved gas tank, the partition dividing the interior of the dissolved gas tank into a first cavity and a second cavity, the first cavity and the second cavity being connected through the multiple diversion holes; an inlet communicating with the first cavity and an outlet communicating with the second cavity are provided on the dissolved gas tank; and an electrolysis component connected to the dissolved gas tank and at least partially located within the second cavity. This utility model's microbubble generator uses an electrolytic gas generation method to pre-fill the dissolved gas tank, ensuring that microbubble water can be automatically output during water use. This utility model also discloses a gas water heater.

The utility model provides a piezoelectric focusing shock wave device which comprises a decorative face shell, a light bar, an upper cover outer shell, a circuit board, a middle outer shell, a key, a key board, a lower cover outer shell, a ceramic crystal module, a metal conduction shell, a gel pad and a fixing outer ring. The circuit board is installed between the upper cover shell and the middle shell, the middle shell is connected with the lower cover shell, the ceramic crystal module is installed in the lower cover shell and connected with the metal conduction shell, the gel pad is installed on the metal conduction shell, and the gel pad and the lower cover shell are installed together through the fixing outer ring. According to the device, non-invasive treatment is carried out on a treatment part through piezoelectric type shock waves, fine and accurate penetration depth can be achieved, the device is suitable for pain symptoms of different depth degrees, and more treatment requirements are met. Piezoelectric focusing shock waves adopt a reverse hemispherical surface integration technology, piezoelectric elements are integrated, and frequency noise is reduced.

The application relates to a positioning self-calibration method of a mobile lamp and the mobile lamp, which comprises an absolute encoder for indicating the rotation angle of the mobile lamp and a driving device for driving the rotation of the mobile lamp; and the method comprises the following steps: S1. multiple preset positioning reference points are arranged in a circumferential range; before delivery, the driving device drives the rotation of the mobile lamp, and meanwhile, the first output values of the absolute encoder corresponding to all the preset positioning reference points are acquired; S2. after delivery, the driving device drives the rotation of the mobile lamp, and meanwhile, the second output values of the absolute encoder are acquired; when the second output values are equal to the first output values corresponding to the preset positioning reference points before delivery, the preset positioning reference points are taken as the calibrated positioning reference points; and S3. based on the calibrated positioning reference points, the positioning of the mobile lamp is performed. The reset process of the application does not need to rotate to the limit in a certain direction to stop by collision, so as to find the initial position, the positioning is fast, the situation that a larger noise is emitted by collision is avoided, and the use experience is improved.

The utility model relates to the technical field of methyl tert-butyl ether, and discloses a methyl tert-butyl ether recovery device which comprises a protective outer tank, an inner tank is arranged in the protective outer tank, the top end of the inner tank is fixedly connected with a warning lamp, and the top end in the inner tank is fixedly connected with a temperature monitor. Cold air is in contact with the surface of the inner tank to cool the interior of the inner tank. When the temperature in the inner tank is reduced to a specified temperature, the methyl tert-butyl ether in the inner tank begins to react, water drops are generated on the surface of the circulating pipe due to cold air in the refrigeration process, and the water drops fall into a gap between the protective outer tank and the inner tank and then flow out from a liquid outlet pipe. And liquid condensate generated by methyl tert-butyl ether in the inner tank due to cold air can be adhered to the interior of the inner tank and the surface of the filter plate. At the moment, a servo motor drives a rotating shaft to rotate, stirring blades on the rotating shaft stir methyl tert-butyl ether, and meanwhile a first scraper, a second scraper and a third scraper respectively scrape off condensate on the inner wall of the inner tank and the upper surface and the lower surface of a first filter plate.

This utility model relates to an energy-saving intelligent lighting sensor lamp, including a sensor lamp housing, an internal lamp body, and multiple heat dissipation fins arranged in a circular array on the external side of the sensor lamp housing. A composite sensor is located at one end of the sensor lamp housing, and snap-fit ​​blocks are fixedly connected to both sides of the sensor lamp housing. Each snap-fit ​​block has a snap-fit ​​component on both sides of its front end face. Movable slots are formed on both sides of the upper and lower ends of the snap-fit ​​blocks, and insertion components are located within these slots. Mounting blocks are located on both sides of the sensor lamp housing, and mounting slots are formed within these mounting blocks. By employing a composite sensing method combining photosensitive and human infrared sensors, energy-saving performance is improved. Installation and disassembly are quick and convenient without the need for tools. Natural heat dissipation is achieved using aluminum alloy heat dissipation fins, eliminating the need for a power-consuming fan. This results in efficient heat dissipation, noiseless operation, and no risk of malfunction, effectively extending the lamp's lifespan.

The utility model relates to a sucking vibration device. A shell is provided with a sucking opening; the sucking diaphragm is arranged at the sucking opening, and the sucking diaphragm protrudes towards the interior of the shell; the sucking assembly is located in the shell and comprises a motor, a magnetic part, a rotating part and a moving part, the motor is fixedly arranged in the shell, an output shaft of the motor is parallel to the axis of the rotating part, the output shaft of the motor is fixed to the rotating part, the moving part is fixed to the sucking diaphragm, and the magnetic part is arranged on the rotating part. The magnetic parts are arranged on the opposite side faces of the rotating part and the moving part, the magnetic poles of the adjacent magnetic parts on the rotating part are opposite, the magnetic poles of the adjacent magnetic parts on the moving part are opposite, and the motor drives the rotating part to rotate so that the moving part can move in the axial direction and the radial direction. The sucking vibration device is simple in structure and low in noise.

This utility model discloses a drill bit and a rotary drilling rig. The drill bit includes a drill barrel and a bulldozing assembly, which includes a sleeve fixed to the top of the drill barrel. A sliding column that can slide up and down is fitted inside the sleeve. The bottom of the sliding column extends into the drill barrel, and a push plate is fixed to the bottom of the sliding column. The top of the sliding column extends out of the sleeve, and a base is fixed to the top of the sliding column. A spring is fitted on the sliding column, and the spring is located between the sleeve and the base. When removing soil adhering to the drill bit, the pressure plate of the rotary drilling rig pushes the base to move up and down. The up and down movement of the base can drive the sliding column and the push plate to move up and down synchronously, thereby effectively removing the soil adhering to the inner wall of the drill bit. The method of removing soil in this application does not require shaking the drill bit, is highly efficient, convenient and quick, does not generate noise, does not affect the connection of the drill bit in the rotary drilling rig, and does not cause defects such as weak drill bit connection.

This application provides an onboard anchor cable tensioning device for a tunneling machine, relating to the field of coal mining equipment technology. It includes a base slidably mounted on the tunneling machine body, a top plate mounted on the base, a rotating plate rotatably mounted on the top plate, and a tensioning jack slidably mounted on the rotating plate. The tunneling machine body is equipped with a first drive assembly for driving the base to slide, and a second drive assembly for driving the top plate to move up and down is provided between the base and the top plate. The tensioning jack is connected to the oil pump of the tunneling machine body via an oil circuit. This device directly installs the anchor cable tensioning device on the tunneling machine, allowing operators to conveniently perform tensioning and compression tests on the anchor cables while on the tunneling machine. It integrates support operations with tunneling operations, eliminating the need to transport separate tensioning equipment, improving work efficiency, and reducing the labor intensity of operators.

The heating device comprises a base, a driving mechanism and a first heating mechanism, the base comprises a fixed part and a movable part, and the fixed part is used for being connected with a liquid storage device; the first heating mechanism is arranged between the fixed part and the movable part, and the driving mechanism can drive the first heating mechanism to be switched between a first position and a second position; the driving mechanism comprises a shape memory alloy spring and a bias part, the shape memory alloy spring and the bias part are both arranged between the fixed part and the movable part, the shape memory alloy spring is configured to serve as a second heating mechanism, and the bias part is configured to bias the shape memory alloy spring from the first state to the second state. According to the heating device disclosed by the invention, through the synergistic effect of the shape memory alloy spring and the bias part, the expansion and contraction of the heating device in the working state are realized, and the adaptability requirement on the working space is reduced. The shape memory alloy spring integrates the heating function and the driving function, and efficient, compact and intelligent self-adaptive heating can be achieved.

The application provides a bearing for improving lubrication based on rotating speed, and relates to the technical field of bearings, which comprises an outer ring, an inner ring, a retainer, a sealing ring and a plurality of rolling balls; the outer ring is internally provided with an oil storage cavity and a first oil injection channel, one end of the first oil injection channel is in communication with the oil storage cavity, and the other end is in communication with a sealed space; the application further comprises a transmission structure for transmitting the vibration of the sealing ring when the inner ring rotates to a valve structure; and the valve structure is used for connecting or isolating the first oil injection channel and the sealed space. When the inner ring rotates, the sealing ring will vibrate under the influence of the friction force, the transmission structure is used for transmitting the vibration of the sealing ring to the valve structure, the first oil injection channel and the sealed space are connected or isolated, lubrication is realized when the first oil injection channel and the sealed space are connected, and no additional noise is generated.

The application discloses a main bridge steel structure construction method and relates to the technical field of bridge construction. The specific steps comprise the following steps: dividing regions, installing baffle plates and pier columns, installing steel pipe piles and platform support columns, installing inter-column supports and sliding beams to form sliding tracks, repeatedly constructing the south bank, completing platform support covering a river, installing lower chord rods and lower bridge decks, installing upper chord rods and upper bridge decks, installing upper-layer cantilevers and lower-layer cantilevers, assembling sliding units, repeatedly assembling sliding units until closure, hoisting the last sliding unit and completing installation of the main bridge steel structure. The construction method can reduce operation risks, shorten construction period, save materials and reduce costs.

The utility model discloses a water purifier, and relates to the technical field of water treatment. Cooling the tank; the absorption refrigeration module comprises a liquid storage device, a generator, a condenser and an evaporator, the evaporator is arranged on the cold tank to refrigerate the cold tank, and the hot tank heats at least part of the generator so as to preheat a solution flowing through the generator; and the like. The generator of the absorption type refrigeration module can be preheated through waste heat of the heat tank, the starting time of the absorption type refrigeration module is shortened, the starting speed of absorption type refrigeration is increased, and the environment-friendly refrigeration effects of being free of noise, low in energy consumption and long in service life are achieved.

The application discloses a subway communication passage static breaking agent excavation method, which comprises the following steps: step 1: drilling breaking holes and air holes according to design drawings, arranging a center air hole at the center of a working face, arranging a circle of auxiliary air holes at the position of auxiliary eyes, and arranging a circle of peripheral air holes at the position of peripheral eyes; two circles of middle breaking holes are arranged at intervals between the center air hole and the auxiliary air holes; a circle of auxiliary breaking holes is arranged between the auxiliary air holes and the peripheral air holes; and three rows of lower breaking holes are further arranged at intervals at the lower part of the middle breaking holes located at the outer circle; step 2: static breaking excavation; and step 3: secondary breaking and supporting; through scientific hole arrangement and planned breaking, a larger free surface is created, the breaking capacity of the static breaking agent can be fully exerted, conditions for effective release of the expansion force of the static breaking agent are provided, the frozen wall is not damaged, and the construction progress can be accelerated.