83results about How to "Avoid friction noise" patented technology

Disclosed is an installation structure of a pedal stroke sensor configured to measure a displacement of a moving member interworking according to a stepping force of a brake pedal. The pedal stroke sensor provided with a sensing member to sense a change in displacement according to movement of the moving member in a non-contact manner is installed at an outside of a housing that allows the moving member to be slid thereinto, the sensing member is provided with a sensor housing that is detachably installed at the outside of the housing, a hall IC (integrated circuit) provided in the sensor housing to sense change in magnetic force, and a magnet housing provided in the sensor housing so as to move while facing the hall IC and on which a magnet is installed, and an elongated hole is formed through an outer surface of the housing in a direction in which the moving member moves, and the moving member is connected to the magnet housing by using a connecting member such that the moving member moves together with the magnet housing through the elongated hole.

A high tension coil spring for a bed mattress having an exposed wiring portion which is formed on the coil spring and works together with a body spring to absorb an external load. A gap A is provided on at least one of upper and lower end wiring portions 14 and 14′ so as to define a space in which at least one of turns 16-5 and 16-5′ of upper and lower exposed wiring portions 16 and 16′ moves upward and downward while the coil spring is being compressed. Frictional noise between the upper and lower end wiring portions and the upper and lower turns 16-5 and 16-5′ of upper and lower exposed wiring portions 16 and 16′ is fundamentally prevented. The elasticity of the upper and lower exposed wiring portions is increased. The wiring portions move only upward and downward without being displaced or deformed in the lateral direction, thereby increasing longevity.

The invention discloses a check valve and an air conditioner having the same, especially discloses a check valve capable of preventing the rotation of the plunger inside the check valve and reducing the check valve of the working noise and an air conditioner having the same. The check valve according to the invention includes a housing formed with a channel, a plunger which can provided on the channel movable in advance and retreat and forms at least one flank part on the lateral surface, a base opened and closed based on the end at one side of the plunger, a stop piece for limiting the advance and retreat moving of the plunger. The housing includes at least one spline hump, the spline hump is formed by projecting from the inner wall of the housing, to prevent the rotation of the plunger. And noise dropping hump formed by projecting to the stop piece is provided on the other end of the plunger.

The invention relates to valve element grinding equipment. The valve element grinding equipment comprises a wedge-shaped block and a fixing plate. A first magnet is arranged on the fixing plate. A first connecting rod is fixedly connected with the fixing plate. An L-shaped rod is fixedly connected with the other end of the first connecting rod. A penetrating through hole is formed in the L-shapedrod. A first supporting rod is slidably connected into the through hole. One end of the first supporting rod penetrates through the through hole and is connected with a roller. The roller abuts against the wedge-shaped block. A supporting spring is arranged on the first supporting rod in a sleeving mode. A grinding roller is fixedly connected with the other end of the first supporting rod. A driving shaft is arranged under the grinding roller. A driving plate is fixedly connected with the driving shaft coaxially. A driving rod is rotationally connected with the eccentric position of the driving plate. A first connecting rod is connected with the other end of the driving rod. A first bevel gear is fixedly connected with the driving shaft coaxially and is a sector gear. A transfer plate is arranged under the fixing plate. A vertical shaft is fixedly connected with the transfer plate and coaxially and fixedly connected with a second bevel engaged with the first bevel gear. The grinding time of the equipment is uniform.

A spiral spring for a reclining adjustment mechanism for a vehicle seat in which ridges are formed on both ends in a direction perpendicular to a coiling direction of a surface of a spring plate member formed by a band-like steel plate having high hardness so that the ridges project from the surface, projected surfaces of the ridges are curved, and the spring plate member is spirally formed into a coil. The spring plate member has a pitch coiled structure in which a gap between an intermediate spring plate member and an inner spring plate member is formed to be smaller than a gap between an outer spring plate member and the intermediate spring plate member. An engagement piece bent in the radial direction is formed at the end of the outer spring plate member, and an engagement coiled core section is formed in the inner spring plate member.

The invention provides a coping coupling structure of washer, the structure comprising crust and metallic coping set above the crust, there is a precast member between the metallic coping and crust, the mentioned precast member comprising at least one precast member projection which can make the crustaceous upside and tectorial bottom have space between. The effect of this invention is the washer's coping coupling structure mentioned above, forming inner precast member fixed inboard the coping, and forming the precast member projection projected on the inner precast member, so the coping not contacting the metallic coping directly, so making the coping by metallic material can effectively prevent friction sound between metals. Otherwise, the coping coupling structure of washer is an inner precast member consisted by plastic material and fixed inboard all the coping, so can effectively prevent the coping corroded by wash water phenomenon.

A high tension coil spring structure for a bed mattress includes spring bodies and exposed wiring portions which absorb an external load. Diameter-increasing portions (A) are formed on at least one of upper and / or lower end wiring portions (14, 14′) of body wiring portions (12), and provide spaces in which upper and / or lower exposure start wiring portions (16-5, 16-5′) move upward and downward. Rigid support ends (18) are formed on at least one of the body wiring portions (12) and upper and lower exposed wiring portions (16, 16′), and absorb a compressive load. The diameter-increasing portions and the rigid ends of the coil spring structure fundamentally prevent noise caused by friction between the exposed wiring portions and surrounding wiring portions when the exposed wiring portions are compressed and significantly increase the elasticity of the exposed wiring portions.

The present application relates to a freezer and a hinge for the same. The hinge comprises a base, in which a left side of the base is provided with a first flange portion, a right side of the base is provided with a second flange portion opposite to the first flange portion, and the first flange portion and the second flange portion is provided with sliding grooves opposite to each other; a connecting seat; a first pivot shaft; a second pivot shaft parallel to the first pivot shaft, in which both ends of the second pivot shaft may slide in the corresponding sliding grooves respectively; a guide rod; a supporting seat; a positioning part; a spring sheath fitted over the guide rod and movable between the positioning part and the supporting seat; and a spring fitted over the spring sheath.

Provided is a vehicular door-hinge device with a checker, which comprises an inner cylinder (6) to be jointed to a female bracket (1), an outer cylinder (7) to be jointed to a female bracket (2), and a check force generating mechanism (20) interposed between the two cylinders (6 and 7). The mechanism (20) is constituted of a plurality of holding members (22) attached to the outer cylinder (7) and arrayed in the circumferential direction of the same, and a plurality of elastic members (23) for biasing those holding members (22) individually toward the inner cylinder (6). Each of the holding members (22) is equipped with a detent projection (26) for abutting against the outer circumference of the inner cylinder (6). The inner cylinder (6) is equipped, in its outer circumference, with a plurality of detent grooves (27), into and out of which the engagements of the detent projections (26) are made according to the relative rotations of the inner cylinder (6) and the outer cylinder (7). The pressure receiving areas of the holding members (22) for receiving the pressures from the elastic members (23) are set larger than the abutting areas of the detent projections (26) and the detent grooves (27). As a result, the vehicular door-hinge device does not lose the checking function, even if the check force generating mechanism is partially troubled, but is high in durability.

The invention provides an air duct assembly and an air conditioner. The air duct assembly comprises a bottom shell, a motor and a fan blade assembly. The fan blade assembly is mounted on the bottom shell and comprises a fan blade shaft and cross-flow fan blades arranged on the fan blade shaft in a sleeving mode. The fan blade shaft extends in the length direction of the bottom shell. The end, close to the motor, of the fan blade shaft is supported on the bottom shell in a suspended mode through a magnetic suspension mechanism. The end, away from the motor, of the fan blade shaft is supported on the bottom shell through a bearing seat. According to the air duct assembly, the magnetic suspension mechanism is designed at the end, close to the motor, of the fan blade assembly, and the fan blade shaft, close to one end of the motor, of the fan blade assembly is in a suspended state through the action of the magnetic suspension mechanism; and in this way, the functions that the fan blade assembly is supported, and it is ensured that the fan blade shaft and a motor output shaft are always in an aligned state are achieved, and friction abnormal sound brought by matching of supporting partsand the fan blade shaft is also overcome.

The invention provides a wear-resistant and anti-aging automobile sealing strip. The wear-resistant and anti-aging automobile sealing strip comprises a sealing strip supporting body and a wear-resistant and anti-aging layer, the sealing strip supporting body comprises the following raw materials in parts by weight:100-120 parts of ethylene propylene diene monomer, 10-20 parts of glass fiber, 10-28parts of glass fiber, 10-25 parts of carbon fiber reinforced polyurethane, 2-6 parts of calcium carbonate, 1-3 parts of zinc oxide, 15-30 parts of isopropanol, 2-4 parts of stearic acid, 2-5 parts ofnano silicon dioxide, 0.1-1 part of an anti-aging agent, 1-3 parts of a compatilizer, 0.1-1 part of an accelerant, 0.5-3 parts of a silane coupling agent and 1-3 parts of sulfur powder. The wear-resistant anti-aging layer is prepared from the following raw materials in parts by weight: 15-20 parts of superfine polytetrafluoroethylene, 2-7 parts of aluminum oxide, 7-10 parts of sodium polystyrenesulfonate, 45-50 parts of a solvent, 1-3 parts of an anti-aging agent and 0.5-1 part of an inorganic pigment. The automobile sealing strip is resistant to abrasion and aging, the preparation method issimple, and the cost is low.

The invention discloses an anti-shaking device for an elevator speed limiter steel wire rope. The anti-shaking device comprises a fixing bracket and at least two rope winding wheels rotationally mounted on the fixing bracket; each rope winding wheel provides a winding path for the elevator speed limiter steel wire rope; one of the rope winding wheel is an adjustable wheel with the position capableof be changed relative to the fixing bracket; and a tensioning mechanism acting on the adjustable wheel is also arranged on the fixing bracket. The anti-shaking device for the elevator speed limitersteel wire rope can effectively prevent the non-car side of the elevator speed limiter steel wire rope from shaking, and noise is avoided.

The invention provides an automobile fastener structure and relates to the technical field of automobile parts. The surface of one end of a fastener body (1) of the automobile fastener structure is provided with a clamping groove (3); one end of an abrasion-resistant part (2) is provided with a sleeving cavity (4); one end of the abrasion-resistant part (2) is provided with an abrasion-resistant surface (6); a boss (5) is arranged on the inner wall of the sleeving cavity (4); one end of the fastener body (1) is sleeved with the abrasion-resistant part (2) through the sleeving cavity (4); and the abrasion-resistant part (2) mainly comprises polyamide, glass fibers and molybdenum disulfide. According to the automobile fastener structure, abnormal sound can be completely avoided, meanwhile, the production process is simplified, the heat treatment process is omitted, the processing technique requirements for personnel are lowered, the risk of hydrogen embrittlement is completely avoided, the quality risk and cost of the fastener are reduced, the usability of the fastener is completely improved, the service life of the fastener is prolonged, and the product competitiveness is improved.

A device for preventing rattling of a door window glass for vehicles. In an activated condition, i.e. upon the upward and downward movement of the window glass, smoother upward and downward movement of the window glass is enabled, thereby eliminating noise due to frictional contact between the window glass and the weatherstrip. In an inactivated or stopped condition of the window glass, the inside walls of the weatherstrip are supportedly brought into close contact with the surfaces of the window glass, thereby also eliminating noise due to rattling of the window glass caused by external factors such as wind, etc.

A spiral (coiled) spring used for a vehicle and more particularly for a reclining adjusting mechanism for a vehicle seat. The spiral spring which is a spring plate member constructed from a band-like steel plate having high hardness has ridges formed on opposite ends in the coiling direction of the spring plate member so that the ridges project from the surfaces of the spring plate member and that the surfaces of the projected ridges are curved. The spring plate member has an outer end section, an intermediate section extending from the outer end section, and an inner end section extending from the intermediate section, and the spring plate member has a pitch coiled structure. In the pitch coiled structure, an engagement section bent in the radial direction is formed at the end of the outer end section, an engagement coiled core section is formed on the inner end section, and a gap between the intermediate section and the inner end section is set smaller than a gap between the outer end section and the intermediate section. The spiral spring reliably achieves both winding of the spiral spring (backrest is smoothly tilted to a rear position) and restoration of the spring to the original state (the backrest is smoothly returned to a forward position), which are characteristics of spiral springs. Also, abrasion, catching, and frictional noise at the time of contact can be avoided. Further, metal fatigue of the spiral spring can be reduced.

A shock absorber for a vehicle may include a flow path provided in a rod valve to allow an oil film to be formed between a cylinder and the rod valve during relative movements of a strut rod and the cylinder, and the oil film is used to prevent friction from occurring between the cylinder and the rod valve during steering.

The invention belongs to the field of mechanical equipment, and relates to a linear motor technology, in particular to a linear motor with an axis. The linear motor with an axis comprises an upper casing and a lower casing, a spring is fixedly mounted on the inner top wall of the upper casing, the lower casing is positioned right below the upper casing, a spool is arranged between the upper casing and the lower casing, an electromagnetic coil is wound on the outer surface of the spool, and an outer locking block is arranged between the upper casing and the lower casing, the outer locking block is a cover body with an opening in the lower portion, a through hole is formed in the center of the outer locking block, annular magnetic steel and a vibrator are fixedly installed on the inner top wall of the outer locking block, the annular magnetic steel is located between the vibrator and the spool, and an inner locking block is arranged at the bottom of the annular magnetic steel. The spool is fixed to the lower casing and used for supporting the upper casing, so that the upper casing is supported, deformation of the upper casing is avoided, and resonance frequency changes caused by deformation of the upper casing are prevented.

The invention discloses a shallow bottom pit steel belt traction home lift. The shallow bottom pit steel belt traction home lift comprises a steel frame, and a lift car and a counterweight device arearranged in the steel frame; a first bracket and a second bracket are arranged at the top end of the steel frame, a traction machine, a first rope hitch and an anti-bouncer are arranged on the first bracket, and a second rope hitch is arranged on the second bracket; a steel belt is arranged on the first rope hitch and comprises two rows of steel wire rope groups which are arranged in a spaced mode, an elastic rubber layer and a polyurethane layer are sequentially arranged outside each steel wire rope group, and the outer side face of each polyurethane layer is provided with skidproof stripes;and one end of the steel belt is fixedly connected with the first rope hitch, and the other end of the steel belt sequentially winds around a counterweight wheel of the counterweight device, tractionwheels of the traction machine, the anti-bouncer and car bottom wheels arranged at the bottom of the lift car and then is fixedly connected with the second rope hitch. The shallow bottom pit steel belt traction home lift has the characteristics that the later-period maintenance cost is low, a shaft can not be contaminated, a traction rope is high in strength, good in durability and long in servicelife, and the lift riding comfortability is good.

The invention discloses a high-temperature-resistant ceramic brake pad and a production process thereof, and relates to the technical field of ceramic brake pad production to solve the problem that high temperature resistance of a brake pad cannot be estimated. The high-temperature-resistant ceramic brake pad comprises a steel backing; a noise reduction piece is arranged on the outer wall of the top of the steel backing, and a thermal insulating layer is bonded to the outer wall of the top of the noise reduction piece; and a friction material is arranged on the outer wall of the top of the thermal insulating layer and prepared from sepiolite fibers, asbestos fibers, potassium carbonate crystal whiskers, brass fibers, wollastonite, aramid fibers, aluminium silicate fibers, aluminium silicate, zirconite, cryolite, feldspar, vermiculite, graphite, antimony disulfide, talcum, mica, barite, porous iron powder, boron modified phenolic resin, open-loop polymerized phenolic resin and the like.The high-temperature-resistant ceramic brake pad has high impact-resistance strength, meanwhile the product density is low, the product hardness is low, braking noise is small, and braking duality isnot damaged.

A high tension coil spring structure for a bed mattress includes spring bodies and exposed wiring portions which absorb an external load. Diameter-increasing portions (A) are formed on at least one of upper and / or lower end wiring portions (14, 14') of body wiring portions (12), and provide spaces in which upper and / or lower exposure start wiring portions (16-5, 16-5') move upward and downward. Rigid support ends (18) are formed on at least one of the body wiring portions (12) and upper and lower exposed wiring portions (16, 16'), and absorb a compressive load. The diameter-increasing portions and the rigid ends of the coil spring structure fundamentally prevent noise caused by friction between the exposed wiring portions and surrounding wiring portions when the exposed wiring portions are compressed and significantly increase the elasticity of the exposed wiring portions.

The invention provides a pumping device for a seat of a vehicle. The pumping device for the seat of the vehicle comprises: a cam mechanism rotating along with a lever; a clutch mechanism receiving power from the cam mechanism; a housing accommodating the cam mechanism and the clutch mechanism therein; a brake mechanism accommodated in the housing to receive power from the clutch mechanism, and configured such that boss portions protrude along an outer circumferential surface thereof, outer end sides of the boss portions face an inner circumferential surface of the housing, and a pressing portion protruding from the clutch mechanism is disposed between a boss portion and a neighboring boss portion; and a brake roller provided at opposite sides of each of the boss portions of the brake mechanism to be disposed between the boss portion and the pressing portion.

The invention discloses a bimetal composite radiator capable of reducing friction abnormal sound and a preparation method thereof. The preparation method comprises the following steps of: coating the outer part of a low-carbon steel pipe with a layer of coating, and then drying the coating; penetrating the steel pipe with the coating into an aluminum profile for the bimetal composite radiator, and carrying out shrinkage pipe interference magnitude compounding on an aluminum pipe in the aluminum profile for the bimetal composite radiator and the low-carbon steel pipe inserted into the aluminum pipe, so that the low-carbon steel pipe and the aluminum pipe are tightly combined to obtain a bimetal composite pipe; and welding the bimetal composite pipe into a radiator, and carrying out secondary drying on the radiator to obtain the bimetal composite pipe, and welding the bimetal composite pipe into the radiator. The aluminum profile for the bimetal composite radiator comprises the aluminum pipe; and the opening ends of the aluminum pipe are respectively provided with a telescopic angle, and the diameter of the bulge of each telescopic angle is 2.8 + / - 0.1mm. The bimetal composite radiator prepared by the method can effectively solve the friction abnormal sound generated by thermal expansion and cold contraction between the low-carbon steel pipe and the aluminum pipe, and a quiet and comfortable use environment is provided for a user.

The invention belongs to the technical field of friction abnormal sound experiment equipment, and particularly relates to a material friction abnormal sound test with a magnetic levitation type objective table; the test bed comprises an objective table, a rack and at least two magnetic levitation bearings, the objective table is arranged above the rack, the magnetic levitation bearings are arranged in parallel, mounting shafts penetrate through rotors of the magnetic levitation bearings, and the mounting shafts are mounted on the rack. A gear is coaxially and statically connected to an outer ring of the magnetic levitation bearing, and a rack is fixedly connected to the bottom face of the objective table and engaged with the gear. The objective of the invention is to solve the problem that an objective table cannot guarantee a mute effect during a material friction abnormal sound test.

The invention relates to a method for improving the tear resistance and the torsion performance of a plate spring bushing and the plate spring bushing. The plate spring bushing integrally vulcanized by rubber and metal is adopted, the inner surface of a rubber elastomer of a vulcanized body is compounded on a self-lubricating sleeve, and then the self-lubricating sleeve is pressed on an inner sleeve; and meanwhile, an outer tile cover of the vulcanized body is divided into two sectioning trapezoidal seam allowance matched structures, and pressing rings are arranged at the two ends of the outer tile cover, are assembled on the inner sleeve in an interference fit manner and are inserted into a cavity of the vulcanized body. According to the method for improving the tear resistance and the torsion performance of the plate spring bushing and the plate spring bushing provided by the invention, axial movement and radial deformation limiting of the rubber elastomer are achieved by controlling the relative positions of the pressing rings at the two ends and two sectioning trapezoid seam allowances of the outer tile cover, so that the installation contact area is increased, and the bolt pre-tightening force is improved; and the self-lubricating bush is provided with a lubricating and abrasion-resistant coating, so that rubber layer abrasion and metal friction abnormal sound during torsion are avoided, and the pre-tightening force of a bolt is improved to improve the tear resistance and the torsion performance of rubber of the plate spring bushing.