25results about How to "Solve abnormal noise" patented technology

The invention discloses a keyboard capable of improving balance, which comprises a keyboard bottom shell, a keyboard shaft body positioning steel plate and a keyboard key shaft body, and is characterized in that in the use process, a balance guide arc block is mounted in a small keycap; the arc-shaped smooth surface of the balance guide arc block can be in contact with the surface of the arc-shaped guide groove when the small keycap is subjected to lateral inclined pressure, so that the vertical pressing state of the small keycap is kept, and a large-size space keycap is supported and mounted by arranging a plurality of groups of keyboard key shaft bodies. And meanwhile, more groups of inclined mounting plates and balance guide arc blocks are arranged at the bottom of the space keycap, sliding guide wheels are mounted in the balance guide arc blocks, and when the sliding guide wheels are subjected to lateral abnormal pressing, the sliding guide wheels are attached to the surfaces of the arc guide grooves, so that the fracture risk of the pressing shaft rod can be further reduced.

The utility model discloses a shock absorber oil seal cover and air spring, shock absorber oil seal cover includes: cover body, it includes the vertical section of tubular, the horizontal section that forms annularly from the inside wall of the upper end portion of vertical section inwardly contracts, the inner peripheral surface of vertical section is equipped with several annular distribution's inner bulge interval, the central hole that communicates to the vertical section is formed in the middle of horizontal section, and the inner air passage for airflow is formed between the inside wall of vertical section and the two inner bulges of adjacent to several, inner lining ring is embedded in the inside of horizontal section and is arranged coaxially with horizontal section, the buffer ring of oil seal cover upper end surface can effectively solve the problem that the abnormal sound will be produced when the buffer block hits on the oil seal cover.

The present invention relates to an all-terrain vehicle continuously variable transmission assembly, which includes a transmission belt, a driven wheel and a driving wheel, wherein the transmission belt is sleeved on the driven wheel and the driving wheel; the driving wheel includes a driving wheel shaft, a fixed plate, a ramp plate, a movable plate, a plurality of groups of speed change sliders and a return mechanism, wherein the movable plate is sleeved on the driving wheel shaft and can move axially between the ramp plate and the fixed plate, and a plurality of groups of guide grooves distributed along the circumferential direction are formed on the side of the movable plate facing the ramp plate; the speed change sliders are installed in the guide grooves one by one and can push the movable plate to move toward the fixed plate. Wherein, in the stopped state, the distance between the center of gravity of the speed change slider and the rotation center axis of the driving wheel shaft is e, and the outer edge radius of the movable plate is r, e≤0.42r, which can significantly reduce the vibration and abnormal noise at low speed, thereby enabling the driver to have a better driving experience.

The utility model relates to the technical field of battery module accessories, and particularly discloses a battery module protection device which comprises a protection armor plate arranged at the bottom of an automobile body, and the protection armor plate comprises a battery protection plate and a motor protection plate detachably connected with the battery protection plate. The motor protection plate is detachably connected with the bottom of the automobile body; a containing groove is fixedly connected to the side, close to the automobile body, of the battery protection plate, contact sponge is fixedly connected to the inner wall of the containing groove, a protection sponge set is arranged on the side, close to the battery module, of the bottom of the containing groove, and the containing groove is detachably connected with the side wall of the automobile body. The device solves the problem of abnormal sound of a traditional battery module protection device.

The invention discloses a method for quantifying impact force at an outlet of a back cavity of a vehicle-mounted open subwoofer, and relates to the technical field of vehicle engineering, and the method comprises the steps: constructing an acoustic simulation model, building a computational domain comprising a structural domain, an internal fluid domain and an external fluid domain, and generating a grid; setting medium parameters and boundary conditions, and applying excitation to a loudspeaker diaphragm; solving a sound field based on an acoustic control equation, and calculating a particle velocity vector by using a momentum conservation principle; extracting the maximum airflow velocity value of the section of the outlet of the inverter tube in a preset frequency range as a key quantitative index; and converting the index into a dynamic pressure load or a matching arrangement database, and outputting arrangement guidance data. According to the method, the acoustic simulation data are converted into the hydrodynamic indexes, so that quantitative evaluation of the airflow impact force of the inverter tube is realized, the arrangement design of peripheral parts is effectively guided, and abnormal sound and structural failure risks are avoided.

The utility model discloses a hinge door plate with dustproof and self-lubricating functions, which comprises a door plate, an air circulation mechanism and an observation mechanism, one side of the door plate is provided with a connecting mechanism, the connecting mechanism comprises a first fixing plate, one side of the first fixing plate is fixedly connected with a first connecting piece, the first connecting piece is internally provided with a first sliding chute, and the first sliding chute is provided with a second sliding chute. A first sliding block is arranged in the first sliding groove. Through the arrangement of the connecting mechanism, the sealing block is tightly attached to the first connecting piece and the second connecting piece, the gap between the door plate and the door frame is filled with the sealing gasket, the gap at the hinge connecting position is blocked through elastic deformation of rubber, and dust is prevented from entering a cab; lubricating grease is injected into the second sliding groove through the groove opening, the grease can flow to the first sliding groove along the sliding grooves to cover the surfaces of the first sliding block, the second sliding block and the connecting column, friction between parts can be reduced, abrasion is reduced, the hinge is prevented from rusting, and the problems of abnormal sound and blocking during door opening and closing are solved.

The present application discloses an electronic device, which relates to the technical field of communication devices. The electronic device comprises a first body, a second body, a movable support, a lifting support and a flexible display screen; the first body and the second body are movably connected, one end of the flexible display screen is connected to the first body, and the other end of the flexible display screen is connected to the second body; the lifting support is movably arranged on the first body, and the movable support is arranged on the second body; when the electronic device is in an unfolded state, the movable support moves to a first position, the lifting support rises to a first height, and the movable support and the lifting support both abut against the flexible display screen; when the electronic device is in a folded state, the movable support moves to a second position, the lifting support falls to a second height, the movable support covers the lifting support, and the movable support abuts against the flexible display screen.

The utility model discloses a kind of adjustable damping rotating mechanism of SPA bed handrail, belong to cosmetology and physiotherapy equipment technical field.Aiming at the angle adjustment gear limited, operation is complicated, easy to shake and there is hidden danger problem existing in the current SPA bed handrail adopts index pin structure.The mechanism includes handrail mounting plate, rotating frame assembly, controllable gas spring, fixed rotating shaft assembly and rotating assembly;Handrail mounting plate top installs handrail pillow, rotating frame assembly is hinged with handrail mounting plate upper and lower support plate, controllable gas spring is located between the two and is equipped with handle switch to adjust locking height;Rotating assembly contains plane thrust bearing and self-locking nut, can realize horizontal arbitrary angle's stay and damping adjustable, cooperate nylon friction plate can reduce clearance shake and wear, rotating limiting column and buffer rubber sleeve can limit rotation range and provide buffer.The mechanism is used for the height and horizontal angle adjustment of SPA bed handrail, improves the regulation flexibility, operation convenience and use stability.

The utility model relates to the technical field of inflator pumps, in particular to an electric inflator pump core which comprises an air cylinder and a motor, the air cylinder comprises a cylinder body, a first air outlet and a second air outlet, an air outlet hole is formed in the tail end of the cylinder body, one end of the first air outlet is used for being connected with an air outlet pipe, and the other end of the first air outlet is communicated with the air outlet hole of the cylinder body; the second air outlet is communicated with the side portion of the first air outlet, a conical one-way valve is arranged in the first air outlet, and an elastic piece enabling the one-way valve to abut against the air outlet hole is arranged at the end, away from the cylinder body, of the one-way valve. A piston capable of moving towards the air outlet hole is arranged in the cylinder body, the piston is in transmission connection with the motor through a transmission structure, and the motor can drive the piston to do reciprocating motion in the cylinder body. The technical problems that in the prior art, a machine core is large in size, equipment vibrates and generates abnormal sound during inflation, and the air tightness of a one-way valve is poor are effectively solved.

This utility model discloses a horizontal drive assembly for an automotive seat, including a motor and a housing. A worm gear and a helical gear are housed within the housing. The motor is connected to the worm gear via a transmission drive to drive its rotation. The worm gear meshes with the helical gear to transmit the worm's rotation to the helical gear, causing it to rotate. Two bushings are arranged opposite each other within the housing. Shoulders are designed at both ends of the helical gear, and these shoulders are inserted into the two bushings to limit and fix the helical gear while allowing it to rotate relative to the bushings. Two collars are also designed at both ends of the helical gear, enclosing the ends of the helical gear teeth and positioned between the shoulders and the teeth. The outer diameter of the shoulders is smaller than the outer diameter of the collars. When the helical gear rotates, the outer end face of the collars can directly contact the inner end face of the corresponding bushing. This utility model effectively avoids direct friction between the irregular end face of the helical gear and the bushings, simplifies the component structure, avoids the abnormal noise problem caused by friction of metal gaskets, and has significant economic benefits.

The application relates to the technical field of engineering design simulation, and provides a power battery box cover pressing test simulation method, device, equipment and medium, the method comprises the following steps: acquiring frame design parameters and cover design parameters of a power battery box; generating a power battery box simulation frame according to the frame design parameters; generating a power battery box simulation cover by simulating cover stamping on a preset flat plate cover material according to the cover design parameters; assembling the power battery box simulation frame and the power battery box simulation cover to obtain a power battery box simulation model; and performing pressing simulation on the power battery box simulation model according to preset pressing parameters to obtain a pressing simulation result. The method can quickly predict whether the battery pack has a pressing rebound abnormal sound problem before the battery pack is produced and manufactured, has high analysis precision for the abnormal sound problem of the battery pack, and can reduce the abnormal sound analysis cost.

The invention relates to the technical field of vehicle design, and discloses a knuckle abnormal sound finite element analysis method, device and equipment, and the method comprises the steps: building a finite element model of a front suspension system, the finite element model comprises an initial knuckle model and a bearing flange model, and the initial knuckle model and the bearing flange model are pre-tightened together through a bolt model; applying a load corresponding to a preset working condition to the finite element model, and determining pressure change data on a contact surface between the initial steering knuckle model and the bearing flange model to represent whether a contact surface separation phenomenon occurs between the initial steering knuckle model and the bearing flange model; and under the condition that the contact surface separation phenomenon is determined to occur through the pressure change data, a first reason for abnormal sound generated by the steering knuckle is determined. The method has the beneficial effects that the knocking abnormal sound generated between the steering knuckle and the bearing flange can be effectively identified, and the technical effects of accurately identifying the reason and the position of the abnormal sound in the front suspension system in the design stage and solving the problem of the abnormal sound are achieved.

The utility model relates to a battery box body, a battery pack and a vehicle. The battery box body comprises a battery box body and a bottom protection plate arranged at the bottom of the battery box body; the bottom of the battery box body is provided with a first area and a second area surrounding the periphery of the first area; the first area is provided with a connecting structure, the connecting structure is at least one of a magnet, a hook-and-loop fastener and a snap fastener, and the battery box body is connected with the bottom protection plate through the connecting structure in the first area and connected with the bottom protection plate through a bolt in the second area. Through the structural design, a bolt connection structure between the first area at the bottom of the battery box body and the bottom protection plate is reduced or cancelled, and the requirement on the wall thickness of part of the structure of the battery box body when the bolt connection structure is arranged is reduced, so that the size is reduced, the weight is reduced, and the material cost is reduced; the energy density of the battery pack can be increased, and the lightweight design can be realized.

The utility model discloses an anti-radiation installation assembly and an electric cooker. The anti-radiation installation assembly comprises a base and an anti-radiation plate, the base is provided with a connecting column, the anti-radiation plate is provided with a special-shaped hole corresponding to the connecting column, the edge of the special-shaped hole extends towards the center of the hole to form at least three deformable clamping jaws, and the clamping jaws are assembled on the side wall of the connecting column in an interference mode. According to the utility model, the special-shaped hole of the radiation-proof plate is aligned with the connecting column of the base, the clamping jaw deforms when being extruded by the side wall of the connecting column, and then the clamping jaw is tightly clamped on the side wall of the connecting column in an interference assembly mode, and the interference assembly mode utilizes the deformability and the elastic restoring force of the clamping jaw, so that the radiation-proof effect is improved. According to the anti-radiation plate, the clamping jaws and the connecting columns are tightly connected, the connecting strength between the anti-radiation plate and the base is enhanced, the problem of looseness is effectively avoided, the stability of the anti-radiation plate in the equipment operation process is ensured, and the problem of abnormal sound generated by resonance is solved.

The invention provides a vehicle body side structure and a vehicle. The vehicle body side structure comprises a doorsill beam extending in the front-back direction of the whole vehicle and a door ring connected with the doorsill beam. The doorsill beam comprises an inner side beam body and an outer side beam body which are connected together, the inner side beam body is made of a steel metal plate, the cross section of the outer side beam body is of a multi-cavity energy absorption structure, a doorsill beam cavity is defined by the inner side beam body and the outer side beam body, and a supporting structure located in the doorsill beam cavity is arranged on the inner side beam body and / or the outer side beam body. The door ring is of an open structure with the bottom open, a plurality of connecting ends which are arranged at intervals in the front-back direction of the whole vehicle are formed, and the connecting ends are connected to the doorsill beam. According to the vehicle body side structure, the structural strength of the threshold position can be improved, the energy absorption effect during collision of the side face of the vehicle body can be improved, meanwhile, the vehicle body forming and assembling difficulty can be lowered, and the whole vehicle manufacturing cost can be lowered.

The utility model relates to a kind of glass lifter bracket structure, belong to the component of automobile glass lifter.The relative arrangement of hanging line groove one and hanging line groove two is arranged on bracket body, cable joint spring one is set in hanging line groove one, isolation line groove is located at the front end of the outgoing wire direction of hanging line groove two, buffer block is integrally injection molded with bracket body.The advantages are novel structure, the abnormal sound and fracture problem generated in the running process of glass bracket caused by the lap joint of two cables is solved by adopting isolation line groove;By the relative arrangement of hanging line groove, the problems of cable hanging error, leading to lifting failure, rework and scrap are solved;By using the buffer block integrated with bracket, the problem of abnormal sound in the lower support point position of bracket caused by the falling of original buffer block during use is solved.The noise reduction, fatigue resistance, wear resistance and durability of glass lifter structure are improved.

The utility model provides an anti-bending composite interlayer flat plate and an oxygen cabin, the flat plate comprises a base layer plate and an inner sealing plate, a plurality of reinforcing rib structures are arranged on the surface of the base layer plate, the inner sealing plate is laid on reinforcing ribs, a penetrating beam is further arranged between the base layer plate and the inner sealing plate, and the penetrating beam penetrates through a closed space of the base layer plate and the inner sealing plate. The flat plate structure and the oxygen cabin made of the flat plate structure have the advantages of being light in weight and small in size, the toughness of the cabin body is improved, the bending strength is improved, and the micro-pressure oxygen cabin is more convenient to enter a home and is convenient for civil use.

The utility model discloses a hot water machine relates to heat transfer technical field, wherein, hot water machine includes the casing, the protective net and the elastic part, the casing one side part is first side part, and the first side part of casing is provided with the opening, and the opening has the first side wall and the second side wall in the first direction relative, and the first side wall is provided with the cooperation portion, and the second side wall is provided with the mounting hole, the protective net is cooperated with the opening, and the protective net includes the net pole along the first direction extension, and the both ends of net pole correspond for first end and second end, and the first end of net pole is cooperated with the cooperation portion, and the second end is cooperated with the mounting hole, the elastic part sets up between the side of second side wall and the second end of net pole, to with the side of net pole elastic abut, carries out the radial location to net pole, restricts the amplitude of the vibration of net pole and produces the transfer path of the vibration energy to the casing, reduces the abnormal sound because of the component collision or friction and produces.

The utility model belongs to the field of gearboxes, and particularly relates to a double-intermediate-shaft gearbox and a retarder assembly. The assembly comprises a gearbox shell, a gearbox rear cover installed at the rear end of the gearbox shell, a gearbox rear bearing cover installed on the gearbox rear cover, a retarder support installed on the gearbox rear bearing cover and a retarder installed on the retarder support. Two reinforcing bolts are arranged on the gearbox rear bearing cover; the two reinforcing bolts are respectively arranged on one sides of the two second retarder mounting holes; and two groups of first reinforcing ribs are arranged on the gearbox rear bearing cover. Aiming at the installation mode of the retarder on the current mainstream double-intermediate-shaft gearbox, the connection mode of the gearbox rear cover and the gearbox rear bearing cover is designed again, so that the rigidity of the gearbox-retarder assembly can be improved, the acceleration vibration and abnormal sound of the whole vehicle caused by the heavy load of the added eddy current retarder are effectively solved, and the service life of the whole vehicle is prolonged. And the riding experience of the whole vehicle and users is improved.

The utility model provides a roof interior trim panel mounting structure and a vehicle, the roof interior trim panel mounting structure comprises a clamping structure and a supporting structure which are arranged on a roof interior trim panel, the clamping structure and the supporting structure are staggered in the up-down direction of the whole vehicle, and a clamping space is formed between the clamping structure and the supporting structure; the top cover trim panel can be clamped to the top cover metal plate through the clamping space from bottom to top along the whole vehicle, the clamping structure is clamped to the top of the top cover metal plate, and the supporting structure is supported at the bottom of the top cover metal plate. According to the top cover interior trim panel mounting structure, the top cover interior trim panel is clamped on the top cover metal plate through the clamping space from bottom to top along the whole vehicle, the clamping structure is clamped on the top of the top cover metal plate, and the supporting structure is supported at the bottom of the top cover metal plate. In addition, the top cover interior trim panel in the clamping state is stressed evenly, and the top cover interior trim panel has good installation stability.

The utility model relates to card reader technical field discloses a buckle type easy maintenance anti -disassembly RFID card reading module, and this module includes instrument shell, installs the fixed base of card reader and buckle mechanism. The buckle mechanism includes the female buckle of setting on the fixed base, the male buckle of rotation connection in instrument shell, spring no. for the male buckle reset elastic force, the unlocking block of driving male buckle unlocking, and spring no. for the spring of fixed base pop -up. When installing, the male buckle and female buckle automatic lock and lock, when disassembling, the male buckle and female buckle are separated by pressing the unlocking block, and spring no. will pop -out fixed base. Instrument shell and fixed base still are equipped with the metal contact of mutual cooperation to realize automatic electric connection. The utility model discloses through buckle type quick -release structure and automatic electric contact mode of alignment, solved the present built -in card reader maintenance need to disassemble complete machine, the problem that operation is complicated and easy to connect wrong line, has the beneficial effect of convenient maintenance, reliable connection, avoids the beneficial effect of mistaken operation.

The utility model relates to the technical field of vehicle parts, in particular to a back door plate and a vehicle. The problems that in the prior art, due to the design of a large gap between a B tail lamp set on a back door and the back door, abnormal sound is generated, and a lampshade is scraped are solved. Therefore, the back door plate provided by the utility model comprises the door trim and the tail lamp assemblies, and the integrated tail lamp assemblies are arranged at the two opposite ends of the door trim. Based on the structural arrangement, the taillight assemblies are integrated at the two ends of the door trim, taillights do not need to be arranged on a back door and a side wall outer plate of a vehicle body respectively, then integrated integration of the taillight combination lamp can be achieved, and zero-clearance matching between the taillight assemblies and the door trim is achieved; and finally, the problems of dust accumulation and abnormal sound scraping are solved.

The invention discloses a hydraulic bushing and a front lower control arm. The hydraulic bushing comprises an inner pipe, an elastic main spring, two runner arc plates and an outer pipe which are coaxially arranged, the elastic main spring is arranged outside the inner pipe in a sleeving mode, and the elastic main spring and the inner pipe form an integrated structure. The two runner arc plates are clamped outside the elastic main spring and are in interference fit with the elastic main spring, and an inner cavity is formed between the runner arc plates and the elastic main spring; the runner arc plate is sleeved with the outer pipe, an outer cavity is formed between the runner arc plate and the outer pipe, and after the inner cavity and the outer cavity are filled with fluid, the outer pipe is connected with the runner arc plate in a sealed mode; a first liquid channel is arranged on the side, facing the outer pipe, of each flow channel arc plate. A first flow channel hole is formed in the first liquid channel, and a decoupling film is arranged on the side, opposite to the first liquid channel, of the first flow channel hole; a plurality of protruding structures are arranged on the surface of at least one side of the decoupling film. The invention discloses a hydraulic bushing and a front lower control arm. The problem that abnormal sound is generated by a hydraulic bushing in an existing suspension system under the vibration working condition is solved.

The utility model discloses a drawer refrigerator unlocking mechanism which comprises an outer box body and a drawer, a storage cavity is arranged in the outer box body, the drawer is movably inserted in the storage cavity, a lock tongue is arranged on the front side of the outer side face of the drawer, a lock catch assembly capable of being connected with the lock tongue in an abutting and locking mode is arranged on the front side of the inner side face of the outer box body, and a lock catch is arranged on the outer box body, the unlocking assembly is arranged at the front end of the outer box body and enables the lock catch assembly and the spring bolt to be unlocked when the unlocking assembly moves, the driver is arranged on the outer box body, the output end of the driver is matched with the other end of the unlocking assembly to drive the unlocking assembly to move, the unlocking mechanism is arranged at the front end of the outer box body, and the size chain length of the locking mechanism is greatly shortened. The change of the clearance surface difference of the product under the condition of thermal expansion and cold contraction is reduced, the abnormal sound problem is avoided, and maintenance is convenient.