48results about How to "Eliminate friction noise" patented technology

The invention relates to hardware door lock accessories, and provides a noiseless lock with magnets. The noiseless lock with the magnets is provided with a box bottom assembly, a box cover, a rotation block, a lever-handle sleeve, a tension spring, a driving block, a reset spring, a lock tongue assembly and a cover buckling assembly. The front end of the box bottom assembly is provided with a lock tongue hole, and the inner portion of the box bottom assembly is provided with a rotation piece pivot, a lever-handle sleeve embedding hole, a lock tongue guide groove, a driving guide groove and a fixed tension spring embedded column. The lock tongue magnet is arranged in a lock tongue and the box buckling magnet is arranged in the box buckling assembly. The lock tongue assembly is embedded into the lock tongue guide groove, the driving block is embedded into the driving guide groove, the lever-handle sleeve is embedded into the lever-handle sleeve embedding hole and the rotation block is embedded on the rotation pivot through a pivoting hole in the middle of the rotation block. The noiseless lock realizes the function that under the attraction effect of the magnets, locking is realized as the lock tongue stretches out directly, achieves the effect that noise generated due to the fact that collision and friction are generated between the inclined lock tongue and the cover buckling assembly when a door is closed is eliminated and achieves a better silencing effect.

The invention provides a quick wax spray rubber composition. The composition is characterized by comprising the following components in parts by weight: 100 parts of rubber, 4-6 parts of organic active agent, 0.5-1.5 parts of inorganic active agent, 2-4 parts of anti-aging agent, 5-8 parts of paraffin, 2-3 parts of processing aid, 20-80 parts of reinforcing agent, 5-15 parts of plasticizer, 1.8-2.5 parts of accelerator and 1.5-2 parts of vulcanizing agent. The invention also provides a preparation method of the quick wax spray rubber composition. The method is characterized by comprising the following steps of: making rubber and parking; sulphurating; and finally, parking. In the invention, a paraffin layer can be quickly adhered on the surface of the rubber within a short time, and the paraffin can even be quickly sprayed out of the interior of a rubber product in a slightly dynamic state so as to better prevent aging by ozone, clear up friction abnormal sound on the surface of the rubber, keep a self-lubricating function and reduce the friction coefficient, and moreover, the anti-aging agent cannot be taken out of the surface so as to avoid blushing and over quick aging.

The invention relates to a remote numerical control multipurpose uphill and downhill trolley for an automated conveying production line, which comprises a trolley capable of running on a flat road or an uphill ramp and a downhill ramp and five trolley lines additionally arranged on one side of a track. An electric cabinet frequency converter, a hanging fixture and the like are arranged on the trolley and are communicated with a master control cabinet through the trolley lines and a cable. In the remote numerical control multipurpose uphill and downhill trolley, the technology of numerical control and half-duplex communication is adopted particularly, so that the trolley can be commanded manually or automatically by PLC programs to complete complex actions such as quick and slow advance and retreat, lifting, release, clamping and the like within the range of 3,000 meters; the technology of automatic frequency control of motor speed is also adopted, so that the trolley can move on the uphill ramp and the downhill ramp or a curve road at a low speed and move on the flat road at a high speed; and the technology of dual braking and electric speed limit is adopted to ensure the safety of the trolley on the uphill ramp and the downhill ramp. The remote numerical control multipurpose uphill and downhill trolley provides novel three-dimensional space automated material conveying equipment with omnipotency, high efficiency and low cost for manufacturers such as automobiles, engines, machinofacture and the like.

A multi-port energy conversion device comprises a low-speed-side rotor composed of a low-speed-side rotor yoke (1) and a low-speed-side permanent magnet (2) on the inner side of the low-speed-side rotor yoke (1), a high-speed-side rotor composed of a high-speed-side rotor yoke (6) and a high-speed-side permanent magnet (5) on the inner side of the high-speed-side rotor yoke (6) and a magnetism regulating mechanism composed of an armature winding (4) and magnetism regulating iron blocks (3) located on the two sides of the armature winding (4). The low-speed-side rotor and the high-speed-side rotor are located on the two sides of the magnetism regulating mechanism respectively, air gaps are reserved between the low-speed-side rotor and the magnetism regulating mechanism and between the high-speed-side rotor and the magnetism regulating mechanism, and the low-speed-side rotor, the high-speed-side rotor and the magnetism regulating mechanism are coaxial. The low-speed-side rotor and the high-speed-side rotor are connected with a low-speed rotating shaft and a high-speed rotating shaft respectively, and the rotating shafts can freely rotate. The conversion device is provided with two mechanical ports and an electric port, and multi-directional multi-output conversion of mechanical energy and electric energy is achieved.

The invention discloses an inside-door lock. The inside-door lock comprises a box body, a latch bolt device, a dead bolt device and a reversing device, wherein the latch bolt device, the dead bolt device and the reversing device are arranged in the box body; the latch bolt device comprises a latch bolt body and a latch bolt shifting block used for retracting the latch bolt body, the dead bolt device comprises a dead bolt body and a dead bolt shifting block used for retracting the dead bolt body, and the reversing device is used for rotating the latch bolt shifting block; the latch bolt shifting block is provided with a first shifting arm, the dead bolt shifting block is provided with a second shifting arm, and the first shifting arm abuts against the second shifting arm; when the latch bolt shifting block rotates, the first shifting arm of the latch bolt shifting block shifts the second shifting arm of the dead bolt shifting block to enable the dead bolt body and the latch bolt body to be retracted at the same time; the latch bolt shifting block is provided with a knob rotary block, and the reversing device is fixedly connected with a handle shifting block. The inside-door lock has the beneficial effects the steering is flexible, adaptability is high, and the internal structure is simplified.

The invention discloses a rotary locking mechanism for a chair. The rotary locking mechanism comprises a locking mechanism and at least one locking hole, wherein the locking mechanism is arranged on arotary disk in a chair rotating mechanism, and the at least one locking hole is arranged on the outer periphery of a fixed disk in the chair rotating mechanism. The rotary locking mechanism is characterized in that the locking mechanism comprises a lock support fixed to the rotary disk and two or above locking pins horizontally and movably arranged in the lock support; the first end of each locking pin is of a conical columnar structure; the first ends of the locking pins are inserted into the locking holes, the conical columnar structures of the first ends of the locking pins are wedged withthe locking holes, and zero clearance locking is achieved. The rotary locking mechanism disclosed by the invention eliminates fit clearance of the rotating mechanism after locking, so that product grade is improved, and user experience is improved. A locking part is prevented from generating scraping noise with the fixed disk even if an operator loosens an adjusting handle in an adjusting process. As abrasion is eliminated, the product service life is prolonged.

A simple-to-assemble massaging chair comprises a massaging chair body frame and a small leg frame. A hanging lug upper cover, a hanging lug base, a rotating pin and small leg fixing screws are arranged on the massaging chair body frame, a rotating shaft, a plastic sleeve and fixing screws are arranged on the small leg frame, the hanging lug base is welded on the massaging chair body frame, the hanging lug upper cover is hinged on the hanging lug base through the rotating pin, the rotating shaft is welded on the small leg frame, the plastic sleeve is arranged on the rotating shaft in a sleeved manner and firmly fixed through the fixing screws, an opening capable of containing the plastic sleeve is formed between the hanging lug upper cover and the hanging lug base, and the hanging lug upper cover and the hanging lug base are fixed with each other by the small leg fixing screws. Through modularized assembling, parts like small legs and handrails are all assembled on an added assembling frame after previous-stage processing is completed, so that simple structure, quickness and high efficiency in assembling are needed; due to the plastic sleeve, friction noise among metal materials during rotating can be eliminated.

The invention relates to a supporting structure for a plastic part hot melting welding column. The supporting structure is fixedly connected with a turning edge of a matching part. The supporting structure is composed of a supporting platform, a column platform and reinforcing ribs, wherein the supporting platform is composed of a straight stretching section and an outwards-extending section which are connected to form a whole body; the column platform is fixedly arranged in the center of the outwards-extending section of the supporting platform; the column platform is composed of a cylinder wall and an upper cover connected with the cylinder wall; a cavity structure is formed by the cylinder wall and the upper cover; a circular hole is formed in the center of the upper cover; the lower surface of the upper cover is vertical to the axis of a cylinder defined by the cylinder wall; the reinforcing ribs are fixedly connected with the left and right sides of the upper surface of the outwards-extending section; the reinforcing ribs extend to the outer appearance of the matching part from the front end of the outwards-extending section of the supporting platform and are connected with the straight stretching section of the outwards-extending section, the lower surface of the turning edge of the matching part and the outer appearance of the matching part. According to the supporting structure for the plastic part hot melting welding column, the contact area between the welding column and the supporting structure is enlarged and the supporting strength is improved; the supporting structure has the good assembling adaptability on a product with the large appearance curvature change.

The invention discloses a preparation method of an antifriction gasket for an automobile driving shaft assembly. The preparation method comprises the following steps of a preparation method of a gasket framework and a preparation method of a surface polytetrafluoroethylene wear-resistant layer, wherein wear-resistant particles comprise, by weight, 50-60 parts of quartz sand, 20-30 parts of brown fused alumina, 10-15 parts of molybdenum disulfide, 1-5 parts of graphene, 2-3 parts of diamond, 0.1-0.5 parts of zirconium oxide and 2-3 parts of aluminum oxide. According to the preparation method ofthe obtained antifriction gasket for the automobile drive shaft assembly, the antifriction gasket is arranged at the position of the matching part of an outer ball cage, so that the starting abnormalsound of a vehicle is effectively eliminated, and the using performance of an automobile is improved. Meanwhile, the surface polytetrafluoroethylene coating has the functions of wear resistance and noise elimination, and the automobile starting abnormal sound is eliminated.

The invention discloses an electronic device, which comprises a shell and a driven part, wherein the shell is provided with an opening; the driven part comprises a first support and a first magnetic piece; the first support is provided with a first side face and a second side face which are arranged back to back in the first direction, the first direction is perpendicular to the axis of the opening, the first magnetic piece is arranged on the first support, and the first magnetic piece is located between the first side face and the second side face; the the second magnetic piece is arranged inthe shell; the magnetism of at least one of the first magnetic piece and the second magnetic piece is adjustable, so that the driven part extends out of the shell from the opening or retracts into the shell from the opening under the magnetic action of the first magnetic piece and the second magnetic piece. According to the scheme, the problem of low reliability of the electronic device can be solved.

The invention discloses a connection structure of an automobile steering system, which is characterized in that an input shaft is sleeved in an input shaft sleeve and then inserted into a universal joint, a bolt hole is arranged on the universal joint, and a bolt is adopted for fixing at the position of the bolt hole. By means of the structure, the connection structure has the advantages of utilizing the shaft sleeve made of rubber materials and arranged at the input end to compensate gap error between the universal joint and the input shaft of a steering wheel in the processing process, greatly improving friction between the universal joint and the input shaft and removing metal friction noise.

The invention discloses a novel PV (pressure and volume) test detection device and a novel PV test detection method. A rudder propeller base is integrated with a stern part of a ship body in design according to a pre-outfitting requirement, a working allowance for milling is reserved on an upper plane of the rudder propeller base, alignment and positioning are carried out by adopting the processing method disclosed by the invention after a main ship body is folded, and the processing device finishes milling for the upper plane and a seal groove and drilling for mounting holes on site under deck.

The invention discloses a dual-machine two-dimensional integrated three-phase asynchronous hub motor and a frequency conversion driving control system. The motor consists of two three-phase asynchronous frequency conversion motors with the same structure; and two integrated modes and three operating modes are adopted by left and right sides of a rear-wheel dual machine and front and rear wheels of the dual machine respectively. The motor has excellent working environment adaptability and energy-saving efficiency and is combined with a frequency conversion driving controller so as to form a novel two-wheel electric vehicle electrically-driven system; and the motor and the system have the advantages of frequency conversion and energy conservation, regenerative brake energy conservation, replacement of motor reverse brake from mechanical friction brake, and the like.

The invention discloses a tire cover capable of effectively reducing car tire noise. The tire cover comprises a tire cover body, sound absorption strips, a clamping groove, a clamping head, an anti-sliding groove, an adhesive and sound absorption cotton. The sound absorption strips are arranged in the tire cover body, each sound absorption strip comprises a base layer, a top layer, a sound absorption layer, a groove, sound absorption holes and sponge, the noise enters a first cavity, the noise is weakened by the sponge by arranging the sponge, a first wave layer and a second wave layer, multi-angle multidirectional absorption can be carried out on the diffused noise through the first wave layer and the second wave layer, and the noise is weakened, and the remaining noise penetrates throughsecond through holes to enter a second cavity; by means of cooperation of convex strips and sound insulation cotton, the sound insulation cotton is corrugated, the superficial area can be increased,and the absorbed noise can be increased. By means of the structural arrangement, the friction noise generated between a tire and the ground can be eliminated maximumlly, and therefore the acoustic comfort for drives or passengers is improved.