30results about How to "Avoid friction noise" patented technology

According to the connecting structure of the bed beam and the stand column, inserting holes corresponding to the shape of the cross section of the bed beam are formed in the connecting positions, connected with the bed beam, of the stand column, connecting pieces are inserted into the inserting holes, and the ends of the bed beam are inserted into the connecting pieces; the connecting piece is provided with a bottom face and peripheral side faces, an opening allowing the bed beam to be inserted is formed in the top face of the connecting piece, the outer side of the bottom face of the connecting piece is attached to the shape of the stand column and abuts against the inner wall of the stand column in a contact mode, and the bed beam is attached to the inner wall of the connecting piece after being inserted into the connecting piece. The blocking edge is blocked outside the inserting hole and attached to the outer wall of the stand column. Connecting pieces connected with the inner walls of the periphery are arranged on the inner sides of the ends of the bed beams, corresponding screw holes are formed in the side walls, attached to the bottom faces of the connecting pieces, of the stand columns and the connecting pieces of the bed beams respectively, and screws sequentially penetrate through the screw holes from the outer portions of the stand columns to lock the stand columns, the connecting pieces and the bed beams together. The connecting structure is firm in connection and compact in structure.

The invention discloses a strong-drive type service lift stable in operation, and relates to the technical field of lifts. A strong-drive type dumb waiter stable in operation comprises a support, two guide rails which are longitudinally symmetrical are fixedly connected to the two transverse sides in the support, sliding blocks are slidably connected into the guide rails, rolling wheels which are distributed at equal intervals are rotatably connected to the sides, close to the guide rails, of the sliding blocks, a lift car is connected between the sliding blocks, and two mounting shafts are fixedly connected to the top end in the support. The motor winds or loosens the steel cable to drive the lift car to vertically move up and down in the support, the sliding block and the roller can also move up and down in the guide rail, and when the sliding block slides up and down, the roller can be kept in the state of being attached to the inner side of the guide rail, so that the state of the guide rail is monitored in real time; and solidified lubricating oil or foreign matter and other impurities can extrude the roller to move, then the cleaning plate is controlled to slide rightwards to be attached to the guide rail, impurities on the guide rail are scraped away, and it is guaranteed that the elevator is in a stable running state all the time.

The invention relates to a wheel and paddle coaxial amphibious robot and a using method thereof, and belongs to the technical field of robot aircrafts. Comprising a fuselage, four deformation modules, connecting rods and an air-ground execution mechanism, the four deformation modules are evenly arranged on the fuselage, the deformation modules are connected with the air-ground execution mechanism through the connecting rods, and the deformation modules are used for controlling position change of the air-ground execution mechanism, so that conversion between a land mode and an unmanned aerial vehicle mode is achieved. The coaxial design that the wheel motor directly drives the wheel is adopted, compared with other gear transmission and synchronous belt transmission for driving the wheel, errors and friction loss caused by transmission are avoided, and meanwhile the situation that the mass is reduced due to the use of a bearing is avoided; the design of the channel in the center of the sleeve further provides convenience for line arrangement of the blade motor, and the problem of line winding is effectively solved through the fixing mode of the blade motor base.

The utility model relates to the technical field of shock absorbers, in particular to a thermal shrinkage film damping spring sleeve, which mainly solves the problems that the shock absorber in the prior art is poor in operation smoothness and generates friction sound, and comprises a spring and a thermal shrinkage film sleeve sleeved on the spring, the inner diameter of the thermal shrinkage film sleeve is 20mm-32mm, the thickness of the thermal shrinkage film sleeve is 0.1 mm-0.3 mm, and the inner diameter of the thermal shrinkage film sleeve is 20mm-32mm. The shrinkage rate of the thermal shrinkage film sleeve is 0.5, and the ratio of the axial length of the spring to the axial length of the thermal shrinkage film sleeve is (3-5): 1.

The present application relates to the technical field of steam humidifier, and discloses a noise reduction structure of steam humidifier convenient to install and a use method, the noise reduction structure of steam humidifier convenient to install, including installation ring, both sides of the installation ring are fixedly connected with lower side plate, the inside of the lower side plate is provided with clamping groove, the side of the installation ring is hingedly connected with upper cover, both sides of the upper cover are fixedly connected with upper side plate, the opposite side of two installation plates is fixedly connected with support rod, the outer wall of the support rod is symmetrically slidably connected with sliding block, the opposite side of two sliding blocks is fixedly connected with spring one, the outer wall of the sliding block is slidably connected in the sliding groove, and the bottom of the sliding block is fixedly connected with clamping block.Under the reaction force of spring one, the sliding block is away from each other along the support rod, drives the clamping block to be away from each other and is clamped in the clamping groove, without using a variety of tools, and the installation of the upper cover can be completed only by simple operation.

The utility model provides a PVC (Polyvinyl Chloride) automotive trim skin with a stick-slip property and an abnormal sound reducing effect, which belongs to the technical field of automotive trim skins and comprises a PU (Poly Urethane) foam layer, an outer skin layer and a PVC layer, and the PU foam layer is positioned between the outer skin layer and the PVC layer; the groove is formed in the top of the PU foam layer; the sponge block and the air bag are arranged in the groove, and the sponge block is located in the air bag; the sponge tube is integrally formed in the center of the top of the sponge block; the lubricant storage cavity is formed in the sponge block; lubricating oil can be temporarily stored through the adsorption capacity of the sponge block to the lubricating oil, a lubricating agent can be extruded to a contact friction area through the oil injection hole under the action of extrusion force generated after the outer skin layer makes contact with other parts, the smoothness of the outer surface of the outer skin layer is improved through the lubricating agent, and the service life of the lubricating oil is prolonged. The friction coefficient between the outer skin layer and other contact parts is reduced, and the friction abnormal sound during relative sliding is reduced.

The invention provides a sealing device and a vehicle, and belongs to the technical field of vehicles. The sealing device comprises a first sealing cover, a second sealing cover and a steering bearing; the first sealing cover comprises an outer cylinder cover part and an inner cylinder cover part, and the outer cylinder cover part is connected with and arranged outside the inner cylinder cover part in a sleeving mode. The second sealing cover is positioned in the outer cylinder cover part; the inner barrel cover part and the second sealing cover are coaxially arranged, and the steering bearing is coaxially arranged between the inner barrel cover part and the second sealing cover and is connected with at least one of the inner barrel cover part and the second sealing cover. According to the sealing device, bidirectional sealing can be provided for the vehicle steering mechanism, the sealing effect is better, friction noise caused by metal-nonmetal direct contact can be avoided, and therefore the use experience of a vehicle and the quality of the whole vehicle can be improved.

The utility model relates to a noise reduction solenoid valve technical field especially relates to a car -used normally closed solenoid valve with noise reduction structure, include: valve seat, magnetic separation cover, coil assembly, valve core subassembly and buffer pad, magnetic separation cover one end is fixedly connected with valve seat, coil assembly is set up in the outer periphery of magnetic separation cover, valve core subassembly is coaxial and located in magnetic separation cover, includes dynamic iron core, reset spring and static iron core along the axial direction in proper order, static iron core is fixed in the one end of magnetic separation cover far from valve seat, dynamic iron core can move axially, one end of reset spring is contained in the positioning hole of dynamic iron core, buffer pad is clamped between reset spring and static iron core, and the one end surface of buffer pad faces reset spring and is equipped with limiting portion, is used for carrying out radial location to the end portion of reset spring. Through the setting of buffer pad, effectively cut off spring end surface and static iron core end surface direct contact, avoid the friction abnormal sound of the relative slip of both, improved the ride comfort of whole car.

The utility model provides an automobile air conditioner air outlet assembly which comprises a panel and an air outlet assembly, an installation cavity is formed in the panel, and the air outlet assembly is arranged in the installation cavity and rotationally connected with the panel. Rotating shafts are arranged on the two sides of the air outlet assembly, shaft holes are formed in the two sides of the mounting cavity, each rotating shaft is inserted into the shaft hole in the corresponding side and rotationally connected with the shaft hole, a rubber sleeve is embedded in each shaft hole, and each rotating shaft is inserted into the rubber sleeve on the corresponding side and tightly matched with the rubber sleeve; each rotating shaft is rotationally connected with the rubber sleeve on the corresponding side; during use, when the air outlet assembly rotates relative to the panel, friction abnormal sound generated between the rotating shaft and the shaft hole can be avoided, and therefore discomfort brought to a user can be avoided.

The utility model provides an automobile actuator which comprises a lower shell and an upper shell, a gear set and a motor are arranged in an installation cavity of the lower shell, the upper shell is connected with the top of the installation cavity, two positioning protruding columns are symmetrically arranged on an outer shell of the motor, and two first supporting plates are arranged at the bottom of the installation cavity. The two axial ends of the motor are matched between the two first supporting plates, top plates of the two first supporting plates abut against the lower ends of the two positioning protruding columns, and the upper shell is pressed and limited to the upper end of the motor. First reinforcing ribs are arranged at the lower ends of the two first supporting plates and on at least one side in the thickness direction of the first supporting plates; buffering pads are arranged between the lower end face of the motor and the bottom wall of the mounting cavity and between the upper end face of the motor and the lower end face of the upper shell. The automobile actuator disclosed by the utility model is stable in operation and low in noise, and the use comfort of a user is improved.

The utility model discloses an electric luggage case, belongs to the luggage case technology, and aims to solve the problems that a telescopic rod of the conventional electric luggage case is driven by an electric push rod to telescopically move relative to a track, is complex in structure and high in manufacturing cost and is not easy to move in case of power shortage. The straight telescopic rod which can be manually pushed and pulled to move to the extending position or the retracting position in the length direction of the track is assembled on the track, the front wheel or the rear wheel is assembled on the telescopic rod, and the telescopic rod is manually pushed and pulled to move to the extending position or the retracting position in the length direction of the track. The distance between the front wheel and the rear wheel is increased or reduced, an electric push rod is omitted, the structure is simple, the manufacturing cost is reduced, the power consumption is reduced, the endurance time of the electric luggage case is prolonged, and the telescopic rod is not influenced when power is insufficient.

The utility model provides a kind of vertical installation draws box device, it is related to furniture technical field, including top plate, bottom plate, drawer, drawer is arranged between top plate and bottom plate, and first slide rail assembly is arranged between the upper end surface of drawer and top plate, second slide rail assembly is arranged between the lower end surface of drawer and bottom plate, form mutually parallel guide path, and gap exists between upper end surface and top plate, between lower end surface and bottom plate, the existence of gap avoids drawer movement and generates friction noise with panel, top plate, bottom plate pre-buried bearing substrate, and pre-buried structure is evenly transferred to substrate internal support point with the load that slide rail system bears, effectively inhibit the overturning tendency when drawer full load. So set, the scheme is by the synergic effect of top plate and bottom plate, make drawer in movement whole course receive bidirectional constraint, eliminate lateral displacement possibility, since the existence gap of top plate, bottom plate and the upper end surface and lower end surface of drawer, reduce the friction between top plate and bottom plate, while protecting the lacquer surface of drawer.

The utility model provides a loudspeaker mask structure and a vehicle. The loudspeaker mask structure comprises a mask body, a lampshade and a light-emitting part which are arranged on a vehicle body, a sound outlet hole is formed in the automobile body, the mask body is provided with an outer decoration face corresponding to the sound outlet hole, the lampshade is provided with a light-transmitting part for light rays to transmit, the light-emitting part is arranged on one side of the lampshade, and the light rays of the light-emitting part can be projected to the outer decoration face through the light-transmitting part. According to the loudspeaker mask structure provided by the utility model, the light emitting part is arranged on one side of the lampshade, and the light emitted by the light emitting part is projected to the outer decorative surface of the mask body through the light transmitting part on the lampshade, so that the decoration effect of the outer decorative surface is enriched, and the delicate sense and the scientific sense of vehicle interior decoration are improved.

The utility model discloses VOC (volatile organic compound) treatment equipment, and relates to the technical field of VOC treatment. The filter device comprises a filter device body, an abutting assembly comprises an empty groove, a movable plate is arranged in the empty groove, abutting blocks are arranged on the two sides of the bottom end of the movable plate, and lead screws are in threaded connection with the interiors of the abutting blocks. The filter plate is prevented from vibrating during working, the stable abutting effect ensures that the filter plate can be kept fixed when high-speed airflow passes through, performance reduction or damage caused by vibration is reduced, meanwhile, the abutting assembly further prevents friction noise between the filter plate and the sliding rail, and due to the fact that the filter plate is stably pressed on the sliding rail in an abutting mode, the filter plate is not prone to vibration. And the friction between the filtering device and the filtering device is effectively reduced, so that the noise level is reduced, the working environment is improved, and the service life of the filtering device is prolonged.

The invention discloses an electric drive assembly suspension lining and a vehicle, the electric drive assembly suspension lining comprises a movable main side support and a vehicle body side support, the movable main side support and the vehicle body side support are connected with a connecting bolt, a suspension cushion assembly is arranged in the vehicle body side support, the suspension cushion assembly comprises an outer pipe and an inner core, and the outer pipe is connected with the inner core. The electric drive assembly suspension bushing has the advantages that the vibration isolation capacity is reliable, the riding comfort of a vehicle can be improved, and the electric drive assembly suspension bushing is compact in structure.

The utility model relates to a kind of drive mechanism of electric bed, electric bed and packaging structure of electric bed, including linear motor, motor support, movable bed plate, bedstead, motor support is rotatably connected bedstead, linear motor both ends are rotatably connected motor support, bedstead, movable bed plate is opened with the embedding hole of directly facing motor support, and support plate of fixedly connected movable bed plate is equipped in embedding hole, the motor support is driven by linear motor and is upwardly movable and abuts support plate, to regulate the elevation angle of movable bed plate.This scheme carries out embedded design to bed plate, for under the limited bed body thickness, provide greater driving force arm for driving movable bed plate to overturn, compared with previous scheme, can be more labor-saving when driving movable bed plate to overturn under the same bed body thickness, lower to material requirement;Or under the technical condition satisfying driving torque requirement, bed body thickness can be set to be thinner.

The invention discloses a multifunctional food processor, which comprises a main machine with a built-in motor and a cup body assembly arranged below the main machine, the cup body assembly comprises a first cup body and a second cup body, the main machine can selectively form a working assembly with the first cup body and the second cup body, and the working assembly can be separated from the main machine when the food processor is in a storage state. A first cup cover is arranged on an open end cover of the first cup body, a through hole penetrating in the axial direction is formed in the first cup cover, a smashing cutter is installed in the first cup body, a pivot joint shaft matched with the main machine is arranged at the top of the smashing cutter, the pivot joint shaft extends into the through hole, and the bottom of the smashing cutter is positioned on the bottom wall of the first cup body. The smashing cutter is limited between the first cup cover and the inner bottom face of the first cup body, the second cup body is installed on the first cup cover, and the first cup cover is pressed on the first cup body through the bottom of the second cup body. According to the crushing cup, the multiple cup bodies are vertically stored through the cup cover, the storage space is reduced, and the risk that the crushing cup is scratched by a crushing cutter in the transportation process is reduced.

The oil pump comprises an oil suction pipe, an oil suction pipe core, a supporting rod and a sling, the oil suction pipe core is inserted into the oil suction pipe, the oil suction pipe core is in clearance fit with the oil suction pipe, and a spirally-rising oil groove is formed between the oil suction pipe core and the oil suction pipe. A ball head sleeve is arranged in a pipe hole of the oil suction pipe core, one end of the supporting rod is connected with and supports the sling, and the other end of the supporting rod extends into the pipe hole of the oil suction pipe core from a pipe opening of the oil suction pipe core and is provided with a ball head matched with the ball head sleeve. The oil suction pipe core and the oil suction pipe directly have ultrahigh coaxiality, abnormal contact is avoided, connection is reliable after assembly, and noise and abrasion are effectively avoided. Meanwhile, on the basis of the scheme, the oil suction pipe core and the oil suction pipe can be designed to be longer, and the oil pumping capacity of the oil pump is greatly improved.

This utility model belongs to the field of switch technology, specifically a silent tactile switch, including a base and a top cover. The base is provided with a first contact and a second contact, both of which extend into the interior of the base. A dome switch is mounted on the base, including a connecting part and a contact part. The contact part is provided with a moving contact that mates with the second contact. The top cover is provided with a button that extends through the top. A silicone pad is provided between the button and the dome switch. The bottom end of the silicone pad has a protrusion that contacts the dome switch, and also has a vent hole and a positioning protrusion on the bottom circumference. The top of the base is provided with a positioning groove that mates with the positioning protrusion. The top cover and the base are riveted together. Through the above structural design, this utility model can effectively reduce pressing and rebound noise, improve the quietness of operation and response sensitivity, and extend the service life.

The utility model discloses a shock absorption and noise reduction device for ship outfitting, which comprises a mounting seat, a mounting cavity is arranged in the mounting seat, a piston is arranged in the mounting cavity, a through hole structure is arranged in the piston, a movable component is connected in the through hole structure, and the movable component comprises a plug, a connecting rod and a baffle; and the connecting pipe is arranged in the mounting base, an air cavity is formed in the connecting pipe, a supporting rod is fixedly connected to the upper end of the piston, a mounting table plate is fixedly connected to the upper end of the supporting rod, a mounting hole is formed in the mounting table plate, and a spring is fixedly connected to the lower end face of the mounting table plate. The shock absorption and noise reduction device for ship outfitting solves the problems that most of existing ship outfitting shock absorption platforms are prone to generating friction noise during use, effective noise reduction is inconvenient, the shock absorption effect is common, and a good buffering and protecting effect on an installation structure is difficult to achieve.

The invention discloses a vehicle interior abnormal sound prediction method, device and equipment and a storage medium, and the method comprises the steps: testing a part based on a preset environment cabin, and obtaining the temperature change information of the part; on the basis of the temperature change information, relative deformation quantity of the part is calculated, and deformation speed information of the part is obtained through the relative deformation quantity; and inputting the obtained temperature, pressure, humidity and deformation speed information of the parts into a neural network model to output a vehicle interior abnormal sound risk prediction result. Friction abnormal sound generated by thermal expansion and cold contraction of vehicle parts can be avoided, and the abnormal sound risk of the vehicle can be predicted.

This utility model relates to a vehicle-mounted host, including a mid-frame and a cover plate covering the mid-frame. The mid-frame includes two parallel side plates, and a positioning structure is provided between the cover plate and the side plates. The positioning structure includes a positioning protrusion on the cover plate and a positioning groove on the side plate. The positioning groove includes a positioning part and an isolation part. The minimum groove width of the positioning part is less than or equal to the minimum groove width of the isolation part. When the cover plate is placed on the mid-frame, the positioning protrusion passes through the positioning part and enters the isolation part. The vehicle-mounted host designed by this utility model can reduce the occurrence of abnormal noises from the vehicle-mounted host structure during vehicle operation, thus improving the driving experience.

The utility model discloses a fan for a gas water heater. The fan comprises an exhaust fume collecting hood, a mounting component, an impeller, a volute and a motor, the impeller is assembled in the volute, one side of the impeller is assembled at an air outlet formed in the exhaust fume collecting hood, and the other side of the impeller is connected with the motor through a mounting assembly; the impeller and the motor are connected through the mounting assembly, so that stable rotation transmission between the impeller and the motor is ensured, and mechanical noise generated during high-speed operation of the motor is prevented; and the volute is assembled outside the impeller, so that the effect of reducing noise is achieved, and the noise generated when the fan runs is reduced.

The utility model provides a matching structure and an automobile. The matching structure comprises two side wall tail lamp bright strips, a rear penetrating lamp bright strip and a rear windshield lower rubber strip. Wherein each side wall tail lamp bright strip is in clearance fit with the rear windshield lower rubber strip, and the rear windshield lower rubber strip further comprises two shielding structure ribs; the two shielding structure ribs extend in the width direction of the rear windshield lower rubber strip, are located on the lower side of the back door metal plate and face the gap between the side wall tail lamp bright strip and the rear windshield lower rubber strip so as to shield the exposed back door metal plate. The automobile comprises the matching structure, and the matching structure and the automobile have the same beneficial effects. According to the matching structure and the automobile, the side wall tail lamp bright strip and the rear windshield lower rubber strip are in clearance fit, so that the friction abnormal sound between the side wall tail lamp bright strip and the rear windshield lower rubber strip is avoided, and the accidents that the rear windshield lower rubber strip abrades the side wall tail lamp bright strip and the side wall tail lamp bright strip affects the rear penetrating lamp bright strip are avoided.

The utility model relates to the technical field of dust covers, and discloses a noise-reducing and low-cost comprehensive air spring dust cover which comprises a dust cover body, a plurality of ribs are arranged in the dust cover body, and a first extension ring and a second extension ring which are integrally formed are arranged at the two ends of the dust cover body respectively. A second fastening assembly and a first fastening assembly are arranged on the outer side of the first extension ring and the outer side of the second extension ring correspondingly for fastening. According to the utility model, through the injection structure consisting of the annular runner, the buffer cavity and the vertical runner, the rubber material is uniformly injected and fed from the parting part at the tail end of the dust cover cavity, so that the rubber material is efficiently filled and uniformly distributed, the rubber injection period is shortened, the material waste is reduced, the production cost is obviously reduced, in addition, the trimming efficiency of products is also improved, and the product quality is improved. And the product surface is optimized.

The utility model discloses a brushless motor structure belonging to the brushless direct current motor technology field, comprising a rotor assembly, a stator assembly and a hollow oil bearing, the rotor assembly comprises a housing, the inner wall of the housing is connected with a magnetic ring, the middle position of the housing is connected with a motor shaft, the stator assembly comprises a pedestal, and the motor shaft is connected with a motor shaft. One end of the circumference of the base is connected with an iron core assembly located in the shell, the other end of the circumference of the base is connected with an installation support, the side face of the installation support is connected with an FPC board, the motor shaft is sleeved with the hollow oil-retaining bearing, the hollow oil-retaining bearing is sleeved with the base, and an oil storage groove is formed in the middle of the interior of the hollow oil-retaining bearing. The rotor assembly and the stator assembly are connected through the hollow oil-retaining bearing, compared with a conventional ball bearing, machining is facilitated, the concentricity after assembly is higher, and concentricity friction noise caused by an upper bearing and a lower bearing can be effectively avoided.

The utility model discloses a vibration reduction assembly and a vehicle, the vibration reduction assembly comprises an upper supporting piece, a lower supporting piece, a first connecting piece and a second connecting piece, one end face of the upper supporting piece is provided with a first inserting part; the end face, facing the upper supporting piece, of the buffering piece is provided with a second inserting part, and the buffering piece and the upper supporting piece are fixedly matched through inserting connection of the first inserting part and the second inserting part. The upper supporting piece and the buffering piece are fixed through insertion fit, so that friction abnormal sound between the inner wall of the buffering piece and the piston rod is avoided when the buffering piece is compressed, the stress swing angle of the buffering piece is increased, and the friction abnormal sound between the outer side wall of the buffering piece and the upper supporting piece is avoided when the buffering piece swings.

The utility model discloses a high-load impact-resistant pneumatic rod structure, and particularly relates to the technical field of pneumatic rods, the high-load impact-resistant pneumatic rod structure comprises a fixing plate, and the top of the fixing plate is provided with a pneumatic telescopic rod; a bearing plate is mounted at the top of the pneumatic telescopic rod; a first fixing frame is fixedly connected to the top of the fixing plate. A knuckle bearing is mounted in the middle of the first fixing frame; the knuckle bearing is rotationally connected with the first fixing frame; the surface of the knuckle bearing is fixedly connected with a damping rod; the pair of damping rods is arranged at the bottom of the bearing plate and can share partial bearing force of the pneumatic telescopic rod, a heavy object makes contact with the top of the bearing plate, then the force is dispersed to the damping rods on the two sides and the top of the pneumatic telescopic rod, the pneumatic telescopic rod bears large force, and then the pneumatic telescopic rod and the damping rods contract; and the knuckle bearing rotates in the middle of the first fixing frame until the bearing plate stops descending at a proper height, so that the problem that the pneumatic rod is blocked in movement due to deformation or breakage when the pneumatic telescopic rod supports a heavy object can be reduced.

The invention relates to the field of automobile material performance evaluation, and discloses a material friction abnormal sound grade evaluation method, device and equipment and a storage medium, and the method comprises the steps: obtaining friction test data when a first material and a second material are pressed to perform relative motion; the friction test data comprises a stick-slip pulse rate, stick-slip release energy and a maximum acceleration value of the second material when friction abnormal sound is generated; determining an acceleration influence level according to the maximum acceleration value; determining a stick-slip pulse influence grade according to the stick-slip pulse rate; determining a release energy influence level according to the stick-slip release energy; and determining the friction abnormal sound grade between the first material and the second material according to the stick-slip pulse influence grade, the release energy influence grade and the acceleration influence grade. The friction abnormal sound grade obtained by the method can provide reference for engineers to perform material type selection so as to avoid the friction abnormal sound problem occurring after mass production.