137results about How to "Solve abnormal noise" patented technology

The invention provides a suspension type sports wood floor system and a construction method thereof. The system comprises a levelling floor mat, a bottom keel, a shock pad, an upper keel, a subfloor, a sound-muffling and moisture-proof isolation layer and a surface floor. The levelling floor mat is arranged under the bottom keel, and is paved on the ground. The upper keel is vertically placed on the upper end of the bottom keel, the shock pad is arranged at the junction portion of the upper keel and the bottom keel and the three parts are fixedly connected, and the subfloor is fixedly arranged on the upper keel. The sound-muffling and moisture-proof isolation layer is paved on the subfloor. The surface floor is positioned on the sound-muffling and moisture-proof isolation layer and fixed on the subfloor. The construction method comprises the steps of paving and levelling the bottom keel, amounting the shock pad, the upper keel, the subfloor, the sound-muffling and moisture-proof isolation layer, the surface floor and the like. According to suspension type sports wood floor system and a construction method thereof, the floor system is good in the performances of sports, stability, moisture-proof and the like, small in deformation, long in service life and free of abnormal sound during use; the construction method is simple, and saves work-period.

The invention provides a side key mounting structure. The side key mounting structure is arranged on the electronic device. The electronic device provided with a housing; the housing is provided with a concave portion, and a first mounting hole and a second mounting hole both formed in the bottom of the concave portion and penetrating through the housing; the side key mounting structure comprises a side key and a hold-down element; the side key is mounted in the concave portion of the housing; the hold-down piece is arranged inside the housing and elastically connected to the side key. The side key mounting structure is capable of well solving the problems of shaking and abnormal sound of the side key of the electronic device in the prior art. the invention also provides an electronic device.

The invention provides a side button mounting structure of electronic equipment. The side button mounting structure comprises a side button, a button mounting hole and an elastic compression component, wherein the button mounting hole is formed in the side end of a shell of the electronic equipment; the side button is arranged in the button mounting hole; the elastic compression component is arranged on the side end of the shell, is close to the position of the button mounting hole and comprises a fixing part and a pressing part which is connected with the fixing part; the fixing part is connected and fixed to the side end of the shell; the pressing part is bent to go into the button mounting hole and is connected to the side button. The side button mounting structure provided by the invention is provided with the elastic compression component and is connected and fixed to the side end of the shell through the fixing part of the elastic compression component, and the pressing part of the elastic compression component is bent to go into the button mounting hole and is connected to the side button, so that the button is enabled not to come off outwards, certain pressing elasticity of two ends of the side button is also guaranteed, and the problem that a side button of electronic equipment swings and gives abnormal noise in the prior art is better solved. The invention also provides the electronic equipment.

The invention relates to the technical field of lubricating greases, and discloses a lubricating grease composition of an automobile steering combination switch. The lubricating grease composition comprises the following components in percent by mass: 85-90% of a base oil and 10-15% of a thickener, and comprises in percent by the total mass of the above two components: 2-4% of a tackifier, 0.5-1.5% of an extreme pressure anti-wear agent, 0.4-1.6% of an antioxidant, and 4.0-6.0% of a solid lubricant. According to the lubricating grease composition of the automobile steering combination switch and a preparation method, the overall formula is simple, the lubricating grease for the automobile steering combination switch has the characteristics of excellent adhesion, plastic compatibility, shear resistance, wear reduction, noise reduction, electrical conductivity and long life, the practical performance of the lubricating grease is improved, the lubricating grease is suitable for using in the contact friction between a metal and a plastic, a plastic and a plastic in the temperature range of 40 DEG C-130 DEG C, the service life of a combination switch for automobiles can be effectively improved, problems of abnormal noise, short circuit, jam and the like of the combination switch for automobiles can be effectively avoided, and the use is convenient.

The invention discloses a rotor positioning method, a rotor positioning device and a control system for a brushless direct current motor, wherein the positioning method comprises the following steps:when performing conduction control on the stator windings of the motor according to a preset conduction mode, applying a voltage detecting pulse of a first preset time to different phases of the stator windings of the motor in turn, and obtaining a plurality of current values by acquiring current values of the stator windings at each phase; acquiring a maximum current value among the plurality ofcurrent values, and marking the phase corresponding to the maximum current value as the first phase; acquiring the phase in which the current value is larger in the two phases adjacent to the first phase, and marking the same as the second phase; obtaining a sector in which the rotor of the motor is located according to according to the first phase and the second phase, and obtaining the positionof the rotor of the motor according to the sector in which the rotor is located. Therefore, the position of the rotor of the motor may be quickly and accurately obtained without the appearance of theproblem of abnormal noise as well as jitter and positioning errors. In addition, the method is simple, and the blind spotless positioning may be realized.

The invention provides a heat exchange device and air-conditioning equipment. The heat exchange device comprises at least two subsidiary heat exchangers arranged in the wind direction; each subsidiaryheat exchanger comprises at least one row of refrigerant pipes and fins mounted on the refrigerant pipes in a sleeving manner; and the transverse pipe center distance of the refrigerant pipes betweenany two adjacent subsidiary heat exchangers ranges from 8 mm to 35 mm. According to the heat exchange device provided in the scheme, an air flow can extend fully and smoothly when flowing among the refrigerant pipes of the adjacent subsidiary heat exchangers, air flow blind zones and weak wind zones on the leeward sides of the refrigerant pipes can be reduced, all the refrigerant pipes in the subsidiary heat exchangers in the upstream and downstream positions of the wind direction can make full contact with the air flow, the problem that the refrigerant pipes in the subsidiary heat exchangersin the downstream position of the wind direction cannot exchange heat effectively due to the fact that the refrigerant pipes are located in the air flow blind zones or the weak wind zones is avoided,the problem that the wind force on the subsidiary heat exchangers in the downstream position of the wind direction is greatly reduced due to the excessively large transverse pipe center distances ofthe refrigerant pipes between among any subsidiary heat exchangers can also be avoided with the design, and the overall energy efficiency ratio of the air-conditioning equipment is increased.

The invention discloses a control method, device and system for a dust collector and a brushless direct current motor, and the method comprises that: in a rotor pre-positioning stage, the pre-positioning of a rotor of the motor is performed through employing a static pulse positioning method so as to obtain the position of the rotor of the motor; in a low-speed operation stage, a dynamic pulse detection method or a flux linkage function method is adopted to obtain a commutation point of the motor, and the motor is controlled to perform commutation according to the commutation point; and in themedium-high speed operation stage, the counter potential zero-crossing point of the motor is detected in a mode of combining the counter potential zero-crossing detection time interval and the counter potential zero-crossing detection method, and the motor is controlled to perform phase commutation according to the counter potential zero-crossing point. Therefore, the starting and positioning time of the motor can be greatly reduced, the motor is ensured not to rotate reversely during starting, abnormal sound and jitter during positioning are solved, accurate commutation of the motor in a low-speed operation stage can be realized, the reliability is high, a counter electromotive force zero-crossing point can be timely and accurately detected, and the motor is ensured to stably operate atan extremely high rotating speed.

The invention discloses a method for repairing a firmware region adaption parameter module of a Western Digital hard disk. The method comprises the steps that 1 data of a user region adaption parameter module of a breakdown hard disk are extracted; 2 the firmware region adaption parameter module is reassembled according to the data of the user region adaption parameter module; 3 a JOG adaption parameter is deployed. According to the method, data needed by the firmware region adaption parameter module can be found accurately, and the firmware region adaption parameter module is reassembled; a parameter of the firmware region adaption parameter module is adjusted, so that the aim of repairing the hard disk is achieved; the problems that the hard disk track seeking is wrong, the disk is knocked, the abnormal noise is occurred and a data region cannot be read and written are solved, and the problem that the adaption cannot be completely fit after repairing is not occurred.

The invention discloses a fuel evaporation configuration structure of a straddle type motorized cart. The fuel evaporation configuration structure of the straddle type motorized cart comprises a head tube, a main cart frame, and a back cart frame, a concave-shaped straddle part which facilitates riders to stride a cart body in one foot is formed between the main cart frame and the back cart frame, a fuel tank which is at least partly overlapped with the concave-shaped straddle part and a tool box on the back position of the fuel box are arranged on the back cart frame, the fuel tank and the tool box are arranged below a cart seat, an oil-gas separator on the fuel tank is connected with a carbon tank through an absorption tube, the back cart frame is a single beam which an independent cart frame stretches to a back top position, the carbon tank is arranged inside space between the fuel tank and the tool box of the cart body, the carbon tank is vertically arranged, and at least partial carbon tank is overlapped with the fuel tank when the cart is overlooked. The fuel evaporation configuration structure of the straddle type motorized cart ensures capacity of the fuel tank and the tool box and compact cart body. Additional protective components are unnecessary due to the fact that the carbon tank is protected by the fuel tank, the tool box, and a cart body cover.

The invention provides an anti-blocking suction device of winnowing and impurity removing equipment of a stem screening line. The anti-blocking suction device comprises an impurity removal fan, a nylon-net cut-stem conveying line, a wind power circulation loop, a nylon-net impurity conveying belt, a blowing fan, a roller brush, an impurity discharging channel and an impurity collecting cloth bag;an observation window is formed in the lower part of a fan box body of the impurity removal fan; a material guide plate for obliquely collecting materials is mounted at the bottom in the fan box body;a cut stem suction cover is arranged above the lowest part of the material guide plate; the cut stem suction cover communicates with the tail end of a pipe opening of a dust suction pipe, extending into the fan box body, of a dust collector through a 90-degree elbow; and the dust collector is arranged on the outer side of the fan box body and is connected with a platform frame body of the fan boxbody into a whole. According to the device, the problems of cut stem accumulation blockage and suction discharging in the fan box body are effectively solved; the device is simple in structure, easyto implement, reliable in sealing and convenient to disassemble; cut stems accumulated in the box body can be subjected to suction discharging in a centralized and timely manner; and the device is economical, practical, labor-saving, efficient and reliable.

The invention discloses a transverse stabilization bar mounting structure used for a vehicle. A transverse stylization bar is fixedly installed on an auxiliary frame assembly through two pressing plates which are spaced for a certain distance, and a rubber bushing is arranged between each pressing plate and the transverse stylization bar. Two limiting clamping hoops are fixedly arranged on the transverse stylization bar. A politef fiber cloth layer is arranged on the inner wall of each rubber bushing. An opening communicating the outer wall with the inner wall is formed in the axial direction of each rubber bushing. According to the transverse stabilization bar mounting structure, politef fiber cloth is added to the inner walls of the rubber bushings, friction force between the stylization bar and the rubber bushings is lowered, the problem that in the running process of the vehicle, rubber bushings of a stabilization bar have abnormal sound and are excessively large in retarding force due to twist motion of the stabilization bar is well solved, the problem of wearing and failure of the rubber bushings is improved, and the reliability and durability of the rubber bushings are enhanced.

The invention discloses cleaning equipment. The cleaning equipment comprises a rolling brush, and a shaft hole penetrating through the rolling brush in the axial direction is formed in the middle of the rolling brush; the cleaning equipment further comprises a driving assembly which comprises a driving part, a flexible belt, a driving shaft and a driven shaft, the driving shaft and the driven shaft are inserted into the two ends of the shaft hole of the rolling brush respectively, shaft shoulders are arranged on the driving shaft and the driven shaft, and the driving part and the driving shaft are in transmission connection through the flexible belt; the cleaning equipment further comprises a rack which comprises a shell, a first swing arm and a second swing arm, the rolling brush is located in the shell, the first swing arm and the second swing arm are located at the two axial ends of the rolling brush, one end of the first swing arm and one end of the second swing arm are rotationally connected with the shell, and the driving shaft and the driven shaft are rotationally connected with the other end of the first swing arm and the other end of the second swing arm respectively; the cleaning equipment further comprises a tensioning piece which is located in the shaft hole, and the two ends of the tensioning piece are connected with the driving shaft and the driven shaft correspondingly, so that shaft shoulders of the driving shaft and the driven shaft abut against the two axial end faces of the rolling brush correspondingly. According to the cleaning equipment, the driving shaft and the driven shaft can be tensioned through the tensioning piece.

The invention provides a voice coil motor, a camera module and an electronic device. The voice coil motor comprises a base (110); the sliding rail assembly is arranged in the front-back direction; the movable seat (120) is used for bearing a first lens and is arranged on the base (110) in a sliding manner through the sliding rail assembly; the first electromagnetic driving assembly (130) and the second electromagnetic driving assembly (140) are used for providing driving force for the movable seat (120) so as to drive the movable seat (120) to slide in the front-back direction relative to the base (110); the first electromagnetic driving assembly (130) and the second electromagnetic driving assembly (140) are arranged on the two sides of the sliding rail assembly respectively. According to the voice coil motor, the structure of the voice coil motor is improved, so that the voice coil motor has a large stroke, and the use requirements of long-focus shooting and macro shooting can be met at the same time.

The invention discloses a novel automobile steering pull rod assembly. The novel automobile steering pull rod assembly comprises a nut, a dustproof cover, a riveting head, a mounting groove, a ball stud, a connecting part, a connector shell, a ball seat and a rear cover, wherein a thread is arranged at the top of the connecting part; the nut is connected with the connecting part; the bottom of the connecting part is connected with the ball stud; the connector shell is internally provided with a containing cavity; the ball stud is arranged in the containing cavity; the bottom of the ball stud is connected with the ball seat; the rear cover is arranged at the bottom of the ball seat; the mounting groove is formed in the top of the connector shell; the riveting head is arranged in the mounting groove. The novel automobile steering pull rod assembly disclosed by the invention is mainly composed of the connector shell, the ball stud, the ball seat, the rear dover, the dustproof cover, the nut and the like, and upper and lower steel ball bowls and a spring in a traditional automobile steering pull rod assembly are cancelled, so that the size is reduced, and friction of a ball head and the steel ball bowls in the previous time is eliminated; axial deformation of the ball stud is reduced after the spring is compressed in the previous time; the problems of loosening and abnormal sounds are solved and the service life is prolonged.

The invention discloses a processing process method for an outer ring which adopts a 20Cr material. The processing process method is characterized by comprising the following steps: S10, forging to obtain blank; S2, roughly turning an outer circle, a first end surface, a second end surface and an inner hole in sequence; S30, broaching grooves; S40, extruding the grooves; S50, cleaning cuttings andgreasy dirt on the surface of a part; S60, finely turning the inner hole, the first end surface, the outer circle, a settling table, a tool withdrawal groove and a second end surface in sequence, wherein machining allowance is required to leave for the diameter and the depth of the settling table; S70, inspecting a dimension; S80, filing and extruding mouth edges of the grooves to remove burrs; S90, drilling; S100, performing thermal treatment; S110, performing thermal treatment inspection; S120, performing shot blasting; S130, finely turning the settling table; S140, cleaning and preventingrust; and S150, inspecting and warehousing. The processing process method can be used for outer ring manufacturing and processing, and can be used for solving the technical problem that a short service life and abnormal sound are easily caused by insufficient roughness and precision of grooves of the outer ring.

The invention discloses a connecting structure for a backrest rotating shaft and an automobile body of an automobile rear-row seat. The connecting structure comprises a backrest framework and the automobile body connected with the backrest framework. A spring rotating shaft is arranged on one side of the backrest framework, and a spring rotating shaft mounting metal plate matched with the spring rotating shaft is arranged at the position, corresponding to the spring rotating shaft, of the automobile body; a step rotating shaft is arranged on the other side of the backrest framework, and a step rotating shaft installation support assembly matched with the step rotating shaft is arranged at the position, corresponding to the step rotating shaft, of the vehicle body. The seat backrests are installed independently and do not influence each other, the whole assembly process is simple and convenient, the manufacturing tolerance of the seat and a vehicle body is absorbed through the spring rotating shafts, meanwhile, force is applied to the seat backrests for restraining, the abnormal sound problem of the seat backrest rotating shafts due to up-down jumping and left-right shaking of the seat can be effectively avoided, and the service life of the seat is prolonged. And the seat has excellent quality performance.

The invention discloses a self-healing sealing device based on mangneto deformation rubber. The self-healing sealing device at least comprises inner layer traditional rubber, first outer layer mangneto deformation rubber, second outer layer mangneto deformation rubber and an annular framework, wherein a radial magnetic field is added to the first outer layer mangneto deformation rubber, an axial magnetic field is added to the second outer layer mangneto deformation rubber, the annular framework is embedded inside the two pieces of mangneto deformation rubber and is used for maintaining the integral shape of the sealing device, the inner layer traditional rubber, the first outer layer mangneto deformation rubber and the second outer layer mangneto deformation rubber are respectively in an annular shape and are in coaxial radially attached arrangement, and a sealing cavity formed between the inner layer traditional rubber and a magnetic conduction body moving shaft is filled with lubricating grease. The self-healing sealing device can be used for similar reciprocating mechanisms such as high-speed-moving greater-pressure-difference high-speed rail trains or hanging shock absorbers of heavy locomotives, and similar rotating mechanisms such as helicopter rotors, rotating machinery and wind power generation equipment, the long-period dynamic sealing or static sealing can be realized, good self-healing functions are realized, and in addition, the relatively simple structure is adopted, so that the stability and the durability of the sealing device are improved.