47results about How to "No vibration noise" patented technology

The invention provides a speed changing magnetic pump, which comprises a pump body, a speed changing magnetic transmission device installed in a casing cavity and a driving motor. The speed changing magnetic transmission device comprises an inner magnetic rotor, an outer magnetic rotor, an isolation sleeve and a magnetic field adjusting ring. The inner magnetic rotor comprises an inner magnetic rotor magnet ring and an inner magnetic rotor magnet core, the outer magnetic rotor comprises an outer magnetic rotor magnet core and an outer magnetic rotor magnet ring which forms an annular cavity with the inner magnetic rotor magnet ring, and the isolation sleeve fixedly connected with a pump body is arranged in the annular cavity. The magnetic field adjusting ring fixedly installed on the isolation sleeve is an annular body formed by connecting a plurality of magnet core blocks and a plurality of epoxy blocks at intervals and used for adjusting magnetic fields of the inner magnetic rotor and the outer magnetic rotor to enable the rotating speed of an output rotating shaft connected to an impeller in a pump body to be different from the rotating speed of an input rotating shaft connected to the driving motor.

The invention relates to a locking device for a battery assembly and an electric automobile. The locking device comprises a main shaft structure, a rotating structure and a fixed block structure. Themain shaft structure comprises a main shaft body, a first circumferential limiting structure, a clamping structure, a limiting shaft structure and a limiting structure, the clamping structure is usedfor being connected with an external driving mechanism, and the limiting shaft structure is used for being connected with the locking block; the rotating structure comprises a rotating cylinder body,a second circumferential limiting structure arranged on the inner wall surface of the rotating cylinder body and a spring clamped in the rotating cylinder body, the main shaft body penetrates in the rotating cylinder body, the first circumferential limiting structure is matched with the second circumferential limiting structure to limit the rotation of the main shaft body, and the spring is arranged between the rotating cylinder body and the limiting structure; and the fixed block structure comprises a fixed block body with a connecting hole, and the rotating cylinder body penetrates in the connecting hole. According to the locking device for the battery assembly and the electric automobile, no vibration noise exists in the use process, the structure is simple, use is convenient and reliable, and the implementing cost is low.

The invention discloses an ion fan with a self-cleaning function, which comprises a collecting electrode, a discharge electrode for heat dissipation, a discharge electrode for self-cleaning and an electrode frame. The collecting electrode comprises a substrate that is in contact with a heating element, and fins arranged at equal intervals on the substrate, wherein an ion wind channel is formed between the fins. The discharge electrode for heat dissipation is fixed to the electrode frame above the ion wind channel, and the discharge electrode for self-cleaning is located on the electrode framelocated on one side of the ion wind channel. The collecting electrode, the discharge electrode for heat dissipation and the discharge electrode for self-cleaning are connected with a power supply viawires, and the discharge electrode for heat dissipation and the discharge electrode for self-cleaning are controlled independently by switches. The ion fan is simple in the system structure, free of vibration noise, low in energy consumption and capable of better exerting the inherent advantages of the ion fan.

The invention discloses a bi-stable pulse electromagnetic valve, which is used for controlling a circulating path of a refrigerant in a refrigerating system and comprises a magnet exciting coil and a valve body component. The magnet exciting coil of the prior art comprises a coil winding, a thermistor and a current connecting insert. When the electromagnetic valve of the prior art is struck by lightning and disturbed by external high-voltage pulse during use, the magnet exciting coil of the electromagnetic valve produces instantaneous electromagnetic pulse magnetic fields so that error reversion produced by a core iron in the valve body component or vibration noise produced by unreliable core iron motion seriously affects the using reliability of the electromagnetic valve. The magnet exciting coil is connected in parallel with a voltage dependent resistor so as to radically solve the problem that the electromagnetic valve produces the error reversion or the vibration noise when the electromagnetic valve is struck by lightning and disturbed by the external high-voltage pulse and ensure the reliability of a product in the system.

Provided is a vibration generating device and mobile communication terminal thereof. The vibration generating device includes a first magnet disposed on the top of the bottom board; a vibration board arranged on the top of the first magnet and separated a certain distance from the magnet; a second magnet disposed on the bottom the vibration board and corresponded with the first magnet; an elastic component connected with the bottom board and the vibration board, for controlling the movement of the vibration board based on the repulsion force and attraction force of the magnets. The device of the invention improves the structure of the vibration generating device wherein the vibration is generated by the lift and the descent of the vibration board, therefore increasing the vibration intensity, decreasing the heating caused by the interior friction, eliminating the vibration noise, enhancing the durability, and adjusting the vibration number and vibration intensity.

The invention relates to a pile pressing machine which comprises a press machine body and a chuck (5). The chuck (5) is connected to the press machine body through a pin shaft. The press machine body comprises an upper machine body (1), a sliding seat (2), a base (3) and fixing clamps (4). The fixing clamps (4) are connected with the base (3). The base (3) is connected with the sliding seat (2). The upper machine body (1) is arranged on the sliding seat (2) and provided with installation holes (6) and a controller (7). The installation holes (6) are used for being connected with other components. The chuck (5) comprises a protecting mechanism (503), a hydraulic mechanism (501) and a clamping mechanism (502). By the adoption of the pile pressing machine, a pile planting manner is changed, hydraulic pressure is adopted for planting a pile, and the pile pressing machine has the beneficial effects of being low in noise, small in vibration, small in influence on a soil layer and the like.

The invention discloses a high-precision temperature control film casting machine. A rubber roller, a patterned roller, a grinding roller, a first cooling roller and a second cooling roller are sequentially and rotationally supported on a rack from front to back, a rubber roller outer barrel is installed on a rubber roller end cover, a rubber roller semiconductor refrigeration barrel is laid on the inner barrel wall of the rubber roller outer barrel, the rubber roller outer barrel is provided with a flexible roller sleeve in a sleeving mode, two ends of the flexible roller sleeve are fixedly connected to roller sleeve supporting end plates at the corresponding ends respectively, end face cams are arranged on the inner sides of the roller sleeve supporting end plates, and cam rolling bodies installed on the roller sleeve supporting end plates are movably supported on the end faces of the end face cams; a patterned roller semiconductor refrigeration cylinder is laid on the inner cylinder wall of a patterned roller outer cylinder, a grinding roller cooling water cavity is formed between a grinding roller inner cylinder and a grinding roller outer cylinder, and the grinding roller cooling water cavity leads to a grinding roller end shaft water hole in a grinding roller end roller through a grinding roller end water hole in a grinding roller end cover. The casting machine not only can accurately control the temperature of the casting cooling roller, but also can control the transverse shrinkage phenomenon of a casting film.

The invention belongs to the technical field of magnetic gear transmission, and particularly relates to a magnetic-gathering Halbach small-range magnetic gear reducer which comprises a machine shell, an end cover and an input shaft, two pieces of stator magnetic steel are arranged on the inner wall of the machine shell side by side in a spaced mode, two rotor discs are arranged on the input shaft side by side in a sleeved mode, and the space phase difference between the two rotor discs is 180 degrees. Rotor magnetic steel is respectively sleeved on the two rotor discs, the input shaft is respectively provided with non-magnetic baffle plates at two sides of the single rotor magnetic steel, the two rotor discs are also jointly provided with a crankshaft in series, two ends of the crankshaft are respectively connected with the two end covers, and the stator magnetic steel and the rotor magnetic steel are respectively of a magnetism gathering Halbach array arrangement structure. The magnetic gear reducer breaks through the bottleneck of friction clearance of a mechanical gear and the like, and compared with a mechanical reducer, the magnetic gear reducer has the advantages of being low in noise, free of friction, high in efficiency, high in durability and the like.

The invention discloses a hole plug for a paddle lifting hole and an installation method, and belongs to the technical field of ships. The hole plug comprises a first plug, a second plug and a connecting piece, the first plug is inserted into one end of the paddle lifting hole, the second plug is inserted into the other end of the paddle lifting hole, the connecting piece is located in the paddlelifting hole and is used for connecting the first plug with the second plug. According to the hole plug, a blade body can be prevented from being damaged in the process of removing the hole plug, theproblems of power fluctuation and vibration and noise are avoided, the service life of the blade is prolonged, and operation is facilitated.

The invention discloses a constant-temperature vaccine transfer trolley adopting semiconductor solid-state refrigeration. The constant-temperature vaccine transfer trolley adopting semiconductor solid-state refrigeration comprises a trolley (1) and a refrigeration bucket (2). According to the constant-temperature vaccine transfer trolley adopting semiconductor solid-state refrigeration, the adopted trolley is provided with a chassis, wheels, a handlebar and a battery compartment, a storage battery is arranged in the battery compartment, and the chassis is provided with an electric control cabinet; the refrigeration bucket is provided with an interlayer, a semiconductor refrigeration chip is arranged in the interlayer in the side surface of the refrigeration bucket, a heat-insulation layeris arranged in the interlayer in the lower surface of the refrigeration bucket, and the refrigeration bucket is further provided with a temperature sensor and a bucket cover; the refrigeration bucketis located above the chassis, and the semiconductor refrigeration chip, the temperature sensor and the storage battery are connected with the electric control cabinet through a conductive wire separately; and during working, a vaccine bucket filled with vaccines is arranged in the refrigeration bucket, electric power is provided by the storage battery, the electric control cabinet controls the semiconductor refrigeration chip to carry out refrigeration, and constant temperature in the refrigeration bucket is kept. Due to the technical scheme of manually pushing the trolley to transfer the vaccines, constant-temperature transfer for the active vaccines in a clean area achieves the purposes of being capable of realizing constant-temperature control, avoiding noise and flying dust, and facilitating sterile treatment.

The invention relates to the field of washing machines of household appliances. 'Impeller' and 'drum' washing machines introduced from foreign countries have been applied for more than thirty years, but both washing machines still have innate and acquired defects and are far away from the goal of ideal washing machines for consumers. The originality of the inventor is to build a section of 'rail' of 'Made in China' and fill the psychological gap and perfect state of 'ideal washing' dreamed by hundreds of millions of families. So the invention has no impeller, drum or dehydration drum, adopts unusual 'three-no' unique design, namely a silent vacuum gravitation dehydration method with an electric control panel at a high position, a natural and orderly double-drying method, an anti-dry heating blind fire-free universal electric heating method for quick water heating, and a rigid-flexible power conversion method, and has four special washing functions of involute double-cam kneading, enclosing wall type rotary washboard scrubbing, intangible 'needles' penetration washing on woven holes, boiling type airbag and bubble bionic hand massaging and the like; the cleaning rate reaches 99 percent; and the novel washing machine is efficient, water-saving and energy-saving, is most suitable for high and middle-grade dress materials and the like, has no hidden trouble, is spectacular in form and comprehensive in manner, and possesses eight innovative matching technology and four safety protection measures. The novel washing machine can be called a big drill of an innovative scientific and technical result in the field of washing machines, and is also a new generation local 'only-child' which has been bred for thirty years in the field of the washing machines.

An automotive instrument pointer assembly fixture, comprising a horizontal support plate, a rotating clamp, a buffer spring, a pointer placement plate, a pointer clamp rod, a pointer positioning hole, a pointer and an instrument panel surface; the pointer placement plate protrudes from the base plate and it is located on the right side of the horizontal support plate and set close to the outer eaves of the base plate; the pointer positioning hole is opened on the top of the pointer placement plate, and there are six arrays in sequence, and the pointer is fixedly inserted in the pointer positioning hole. The inside of the hole; the top of the instrument panel is placed on the top of the axial support plate and the transverse support plate and is pressed and fixed by rotating the clamp around. The automobile instrument pointer assembly fixture is provided with a buffer spring, which is supported on the top of the buffer spring when the instrument panel is in the state of installation and positioning. The buffer spring can buffer the vertical downward extrusion force from the fixture to avoid The severe extrusion force directly presses the surface of the instrument panel against the axial support plate and the transverse support plate, resulting in extrusion damage to the surface of the instrument panel.

The invention discloses a fixed swing gate movement with damping property and flexibility. A radial buffering body and an axial buffering body are additionally arranged in an inner structure of the movement. In an operation process of the movement, vibration noise caused by manufacturing and mounting errors is not caused; meanwhile, in a rotation process, when the movement is dynamically impacted, the damage of the impact to a movement component can be relieved, and the impact of gate machine passage pedestrians to a vehicle can also reduced. A door wing fixing plate in a rotating cylinder component is connected to a rotating cylinder by a screw or a rivet other than a welding way, so that machining and surface treatment on the rotating cylinder are greatly facilitated, the surface treatment quality can be improved, and precision error caused by a connecting process is eliminated.

The invention discloses a switch door structure for an air-conditioning indoor unit and the air-conditioning indoor unit, which relate to the technical field of air-conditioning and are invented to solve the problem that the movement of the door body easily produces relatively large vibration noise in the drive structure of the opening and closing door in the prior art. The invention relates to a switch door structure for an air-conditioning indoor unit, comprising a front shell, an air outlet is formed on the front shell, a damper is arranged at the air outlet, and a driving assembly is connected to the damper, the driving assembly includes a driving part and a driven part, and the driving part passes through the The active part bracket is connected to the front shell, and the driven part is fixedly connected with the air door. The active part can drive the follower to move so that the damper opens or closes the air outlet. There is a reserved space at the connection between the active part support and the front shell. When the damper expands or contracts, the reserved space allows the active component bracket to move relative to the front shell. The invention relates to a switch door structure for an air conditioner indoor unit, which is used to open or close the damper of the air conditioner indoor unit.

The invention discloses a protective device for preventing water from entering a flexible shaft. The device includes a first water blocking part, a second water blocking part, a first mounting part, asecond mounting part, a third mounting part and a fourth mounting part, wherein the second water blocking part is connected with one end of the first water blocking part, one end of the second waterblocking part cooperates with the first water blocking part to form a first flow guiding groove. The first mounting part is connected with the second water blocking part and is provided with a clamp block; the second mounting part has one end connected with the other end of the second water blocking part; one side of the second mounting part is provided with a clamping plate, and the other side ofthe second mounting part is provided with a flow guide. The third mounting part is connected with the second water blocking part, is connected to the second mounting part, and is provided with a second flow guide groove and a flow guide surface; the fourth mounting part is connected to the second water blocking part; one side of the fourth mounting part is connected to the third mounting part; and the other side of the fourth mounting part is provided with a clasp. The device has the advantages of low cost, simple installation, high installation efficiency and good durability.