48results about How to "Avoid crash noise" patented technology

The present invention aims to provide a pneumatic tire capable of effectively preventing a large collision noise caused by simultaneous collision of a plurality of blocks of each row with a road surface. The six block rows (9, 10, 13) on the tread contact surface (1) consist of five circumferential grooves (2, 3, 4) extending continuously in a zigzag manner in the circumferential direction of the tread. A plurality of transverse grooves (5, 6, 11) extending in the tread width direction are defined between adjacent circumferential grooves and between the outermost circumferential groove (4) and the corresponding tread side edge (e). The five circumferential grooves (2, 3, 4) include circumferential narrow grooves (2, 4) and a pair of circumferential wide grooves 3, and a pair of circumferential wide grooves (3) are arranged on both sides of the tire equator line and are narrower than the circumferential direction The width of the slots (2, 4) is wide. The transverse grooves (5, 6) are inclined relative to the tread width direction. Each pattern block (7, 8, 12) of the pattern block row (9, 10, 13) has a polygonal plane profile shape with more than six sides, and at the same time, the minimum length of the pattern block in the tread width direction is located at the The length in the tread width direction of the central portion of the block in the tread circumferential direction is longer than the length in the tread width direction of the end portion in the tread circumferential direction. The tread edges (7a, 8a, 12a) of the blocks (7, 8, 12) of each block row (9, 10, 13) are spaced apart from each other in the circumferential direction of the tread when the tire rolls under load.

A method for controlling a stop operation of an air conditioner having a compressor, a four-way valve, an electronic expansion valve (EEV), an indoor fan and an outdoor fan, includes the steps of stopping the operations of the compressor and the indoor fan if an operation stop signal is inputted during a heating operation; and checking an amount of elapsed time after the turn-offs of the compressor and the indoor fan, and turning off the EEV and the outdoor fan if the amount of elapsed time reaches a preset reference time. The methods also includes the steps of detecting pressures at an inlet side and at an outlet side of the compressor to calculate a pressure difference; and turning off the four-way valve if the calculated pressure difference reaches a preset reference pressure difference.

There is provided a power transmission device that causes no vibration in a rotation direction and collision noise even if a shock absorbing rubber is permanently deformed in a compression direction. Specifically, even if compression forces repeatedly applied to a shock absorbing rubber 12 causes the shock absorbing rubber 12 to be permanently deformed in a compression direction, an elastic member 16 placed between the shock absorbing rubber 12 and each protrusion 11a presses the shock absorbing rubber 12 circumferentially of a pulley 10 and a transmission ring 11, and therefore, a shock of an abrupt rotation number change caused by rattling between the shock absorbing rubber 12 and the transmission ring 11 can be absorbed by the elastic member 16, and vibration in a rotation direction and collision noise can be prevented.

A system of controlling a sliding member for a vehicle includes a motor, a pulse generating device, a counting device and a control device. The system has a range for movement of the sliding member between a position short of a first lock position and a position short of a second lock position. Also, the system has an error range within the range for movement of the sliding member and memorizes in advance a range of pulse count representative of the error range. If a pulse count counted by the counting device falls within the range of pulse count when the sliding member discontinues movement due to detection of an overload of the motor, the system resets a pulse count counted by the counting device at one of the first and second lock positions.

The invention provides a horizontal vibration linear motor which comprises a motor shell, a cover plate and a vibration assembly. The cover plate is installed on the motor shell in a covering mode, an installation space is formed by the cover plate and the motor shell, the vibration assembly is hung in the installation space through location of elastic supporting pieces located on the two opposite lateral walls of the motor shell respectively and comprises a vibration block and a permanent magnet installed on the vibration block, the permanent magnet can drive the vibration assembly to perform reciprocated vibration in the direction basically parallel to the bottom face of the motor shell under the effect of the magnetic field force and enables the two elastic supporting pieces located on the opposite lateral walls to be correspondingly stretched and retracted in the vibration process, and a limiting device for limiting the reciprocated vibration amplitude of the vibration block is further installed in the installation space. According to the horizontal vibration linear motor, the capacity for overcoming faults such as short circuits can be improved, and the whole quality level of machines with the motor is easily improved.

The invention provides a new pressing type rebound buffer lock. The lock comprises a rebound lock which comprises a driving assembly arranged in a shell, a transmission assembly and a linkage assembly; the driving assembly comprises a driving mounting part, a driving push block which is installed on the driving mounting part in a reciprocating sliding mode and abuts against and cooperates with a bump on a buffer guide rail arranged in advance and a driving push rod hinged to the driving push block, the transmission assembly comprises a transmission mounting part, a transmission stop block hinged to the transmission mounting part, a telescopic spring with the two ends connected with the shell and the transmission mounting part respectively and a transmission rebound block which is formed onthe transmission mounting part and abuts against and cooperates with the driving rebound block, and the linkage assembly comprises a linkage rod and a linkage part performing reciprocating sliding ina linkage sliding groove formed in the shell in advance.

A drum type washing machine having a balancer to prevent a reduction in the washing capacity of a rotating drum while preventing a collision noise of balls installed in the balancer. The diameter of the balls is maintained in a range of 12 millimeters to 30 millimeters, so as to prevent a collision noise of the balls during rotation of the rotating drum while preventing a reduction in the washing capacity of the rotating drum.

The invention relates to a lock unit (1), comprising at least one rotary latch (2), a first pawl (3) having a pawl rotational axis (4), and a blocking lever (5), wherein the rotary latch (2) introduces a pivot moment into the first pawl (3) in the locked state of the lock unit (1) and the first pawl (3) is fixed by way of the blocking lever (5), wherein a second pawl (6) is provided, which is mounted on the pawl rotational axis (4) and can be engaged in the blocking lever (5) and the rotary latch (2) and the first pawl (3) has a curved first blocking region (12) for a main detent (13) of the rotary latch (2).

A pump for an inkjet printer applying a negative pressure to an inkjet head nozzle, includes: a tube connected to the inkjet head nozzle and being U-shaped; a plurality of rollers which contact an inner arch of the tube and having a tapered shape; and a rotor to which the plurality of rollers are rotatably mounted. When the rotor rotates in a direction, at least one of the plurality of rollers rotate and squeeze the tube. When the rotor stops rotating, the plurality of rollers return to a state in which the plurality of rollers do not squeeze the tube due to a recovering force of the tube. The squeezing of the tube generates the negative pressure in the inkjet head nozzle.

The invention discloses a chair for correcting sitting posture, which comprises a chair back. The upper end of the chair back is provided with a headrest bar. The upper end of the chest support is provided with a headrest, the back of the chair is connected to the chair surface through the back rod, and the lower end of the chair surface is provided with a chair foot pole, and the chair foot pole is vertically connected with the chair foot cross bar. The chair for correcting sitting posture has increased the correcting structure, and the structure uses a rigid chest support bar with a front and rear telescopic structure to install the chest support to the back of the chair. It can be set down, and the chest support can be kept at a reasonable distance from the chest in the correct sitting posture by adjusting the telescopic rod, so that the sitter can maintain a correct sitting posture without leaning forward, maintaining a sufficient line of sight and not arching the back to affect the development of body shape and bones , The height adjustment mechanism is formed between the chair back and the chair surface through the chest support and the chair back rod.

A ball screw includes: a nut; a screw shaft; and an end deflector that is attached to the nut, and has a guiding protrusion portion which protrudes toward a helical groove of the screw shaft, in which a guiding tip edge of the guiding protrusion portion picks up a ball and guides the ball into the end deflector, the end deflector includes a ball lifting portion that lifts the ball along one groove side surface of the helical groove, and the guiding tip edge picks up the ball lifted by the ball lifting portion.

The invention discloses a valve rocker for an automobile engine. The valve rocker comprises a rocker body which is provided with a shaft hole in clearance fit with a main shaft, one end of the rocker body is provided with an ejector rod used for ejecting a valve lifer and adjusting valve clearance, the other end of the rocker body is provided with a roller used for making contact with an engine crankshaft cam, the ejector rod is in threaded connection with a threaded hole in one end of the rocker body, a bulb is arranged at the lower end of the ejector rod and provided with a cushion block, the upper end face of the cushion block is provided with an inwards-concave arc surface with the shape and the size matched with those of the surface of the bulb, a connecting frame is arranged between the cushion block and the lower end of the ejector rod, the lower end of the ejector rod is sleeved with the upper end of the connecting frame in a sliding mode, swing clearance exists between the upper end of the connecting frame and the lower end of the ejector rod, and the lower end of the connecting frame is connected with the outer side wall of the cushion block. The valve rocker for the automobile engine is not prone to abrasion, long in service life and low in noise and makes contact with the valve lifter all the time.

An adjustable damping valve arrangement includes an actuator for controlling a main stage valve. The main stage valve has a rigid main stage valve body which carries out an axial operating movement relative to a valve seat surface of the main stage valve. A pre-opening valve having at least one spring element which in turn preloads a pre-opening valve body precedes the main stage valve body. The main stage valve body is supported on the valve seat surface in the closed operating position by the pre-opening valve. The pre-opening valve is divided by the valve seat surface into an inner pressure-impinged incident flow surface and an outer pressure-impinged incident flow surface. The inner pressure-impinged surface is operative for a first incident flow direction, and the outer pressure-impinged surface is operative for a second incident flow direction.

The invention discloses a construction lifter control system, and relates to the field of lifter control systems. According to the construction lifter control system, the control operation mode of a lifter is switched into a manual operation mode or an automatic operation mode through an electric lock switch, and the lifter is controlled to operate to any height of a floor; and logical judgment isconducted through a PLC to obtain whether the lifter is on a flat layer or not, and thus a lifter door and a floor door are controlled to be opened or closed. According to the construction lifter control system, the construction lifter can parked at any height, and meanwhile, collision noise caused by the use of a mechanical lock and a car cam is avoided.

A presser device for a sewing machine includes a first lever having a cloth pressing portion which is swingably mounted on a presser foot, the cloth pressing portion being swung so as to be switchable between a cloth pressing position and a raised position, a second lever having a support portion where the second lever is pivotally supported on an upper part of the first lever and an abutment which is normally in abutment with a needlebar assembly moved up and down, a first biasing member which biases the first lever so that the first lever is caused to pivot in such a direction that the cloth pressing portion becomes a cloth pressing position, and a second biasing member which biases the second lever so that the second lever is caused to pivot in such a direction that the abutment of the second lever is abutted against the needlebar assembly.

The invention provides a new pressing type rebound buffer lock. The lock comprises a rebound lock which comprises a driving assembly arranged in a shell, a transmission assembly and a linkage assembly; the driving assembly comprises a driving mounting part, a driving push block which is installed on the driving mounting part in a reciprocating sliding mode and abuts against and cooperates with a bump on a buffer guide rail arranged in advance and a driving push rod hinged to the driving push block, the transmission assembly comprises a transmission mounting part, a transmission stop block hinged to the transmission mounting part, a telescopic spring with the two ends connected with the shell and the transmission mounting part respectively and a transmission rebound block which is formed onthe transmission mounting part and abuts against and cooperates with the driving rebound block, and the linkage assembly comprises a linkage rod and a linkage part performing reciprocating sliding ina linkage sliding groove formed in the shell in advance.

A presser device for a sewing machine includes a first lever having a cloth pressing portion which is swingably mounted on a presser foot, the cloth pressing portion being swung so as to be switchable between a cloth pressing position and a raised position, a second lever having a support portion where the second lever is pivotally supported on an upper part of the first lever and an abutment which is normally in abutment with a needlebar assembly moved up and down, a first biasing member which biases the first lever so that the first lever is caused to pivot in such a direction that the cloth pressing portion becomes a cloth pressing position, and a second biasing member which biases the second lever so that the second lever is caused to pivot in such a direction that the abutment of the second lever is abutted against the needlebar assembly.

A ball screw includes: a nut; a screw shaft; and an end deflector that is attached to the nut, and has a guiding protrusion portion which protrudes toward a helical groove of the screw shaft, in which a guiding tip edge of the guiding protrusion portion picks up a ball and guides the ball into the end deflector, the end deflector includes a ball lifting portion that lifts the ball along one groove side surface of the helical groove, and the guiding tip edge picks up the ball lifted by the ball lifting portion.

A drum type washing machine having a balancer to prevent a reduction in the washing capacity of a rotating drum while preventing a collision noise of balls installed in the balancer. The diameter of the balls is maintained in a range of 12 millimeters to 30 millimeters, so as to prevent a collision noise of the balls during rotation of the rotating drum while preventing a reduction in the washing capacity of the rotating drum.

An automatic positioning finding structure with a furniture pulling device comprises the pulling device sliding in an inner cavity of a fixed groove piece. The pulling device at least comprises a support assembly. A pulling part is arranged on the support assembly. A supporting boss is arranged on the fixed groove piece. A supporting wing part is arranged on the support assembly and slidingly supported on the supporting boss. An elastic part and a fixed part are arranged on the support assembly. The elastic part slidingly and elastically acts on the top and / or the side of the inner cavity of the fixed groove piece. The fixed part has a limiting effect on the fixed groove piece at least after the pulling device completes positioning finding so that the supporting wing part can be closely pressed on the supporting boss so as to lock and fix the pulling device. Through the improvement of the structure, the automatic positioning finding structure has the advantages of being simple and reasonable in structure, reliable in performance, rapid and convenient to detach and assemble, convenient to use and high in universality and practicability.

The invention discloses a hot pot capable of achieving liquid level lifting, belongs to the technical field of hot pots, and solves the technical problem that in the prior art, a material tray must be matched with a specific stockpot for use and cannot be suitable for stockpots of other sizes. The hot pot comprises a stockpot and a material tray arranged in the stockpot, the material tray divides the stockpot into an upper space for containing food materials and a lower space for containing soup, the material tray is provided with a breathing cavity with an open lower end, at least part of the breathing cavity is located in the lower space to contain part of the soup, the breathing cavity is communicated with the lower space, and a liquid through hole is formed in the part, surrounding the periphery of the breathing cavity, of the material tray.

The invention relates to a rotary bottle blowing machine opening and closing mold and bottom mold linkage structure and a bottle blowing machine, the rotary bottle blowing machine opening and closing mold and bottom mold linkage structure comprises an opening and closing module, a bottom module and a linkage device, the opening and closing module has an opening state and a closing state, and the bottom module has a butt joint state in butt joint with the opening and closing module and a separation state in separation from the opening and closing module; the linkage device comprises a connecting rod mechanism in linkage with the opening and closing module, a lead screw mechanism in linkage with the bottom module and a linkage mechanism used for enabling the connecting rod mechanism and the lead screw mechanism to be in linkage, and the connecting rod mechanism can drive the opening and closing module to be switched between the opening state and the closing state. The lead screw mechanism can drive the bottom module to be switched between the butt joint state and the separation state. The linkage mechanism can realize linkage of actions between the connecting rod mechanism and the screw rod mechanism, so that the opening and closing module and the bottom module can be synchronously operated, the matching precision of the opening and closing module and the bottom module is higher, and bottles blown by using the linkage structure are higher in yield, lower in noise and not easy to damage.

The present invention relates to a device for varying a stroke of a clutch pedal. More particularly, the present invention relates to a device for varying a stroke of a clutch pedal applied to a pedal unit of a clutch system of a manual transmission and varying an effective stroke of a clutch pedal depending on a vehicle speed signal and an engine RPM signal thereby preventing energy collision noise of a driving system.

The invention provides a drum washing machine, which includes a box body and an outer cylinder, and an avoidance opening is provided on the side wall of the box body in a collision-prone area for avoiding collision between the outer cylinder and the box body. On the premise of simple structure and easy implementation, the drum washing machine of the present invention effectively solves the problems of collision noise and displacement generated when the outer cylinder collides with the box body.

The invention provides an indoor unit foam installation structure and an air conditioner. The indoor unit foam installation structure comprises a shell and a first foam assembly, wherein the first foam assembly is arranged in the shell, a second foam assembly is installed on the rear side of the first foam assembly, and the front side of the second foam assembly abuts against the rear side of the first foam assembly. By arranging the first foam assembly, it is avoided that cold air blown out of an air outlet is directly blown to a top cover plate in a refrigeration state, and condensation on the top cover plate is prevented. By arranging the second foam assembly, it is avoided that evaporator fins scratch other parts, and it is also avoided that collision noise between an evaporator connecting pipe and the shell is caused by vibration in the use process of the air conditioner. As the front end of the second foam assembly abuts against the rear end of the first foam assembly, the rear side of the first foam assembly and the front end of the second foam assembly are limited and fixed, the stability of the whole foam installation structure is guaranteed, assembly dislocation between parts is avoided, and a fool-proof effect is achieved.

A brake amplifier having a housing; a spindle nut; a motor; two tie rods; a hook frame; and a pressure piston which can be coupled at a first end to a brake pedal and at a second end to a brake master cylinder. A return spring is assigned to the pressure piston which bears a follower element at the second end, which follower element engages the hook frame at the rear and rests on the end side of the spindle nut in a rest position by means of a distance holder passing through the hook frame such that the follower element is spaced apart from the hook frame. In the operating position, the pressure piston is moved relative to the main shaft so that the follower element is spaced from the hook frame and is spaced from the end side by means of the distance holder. An elastomer element projecting axially in the direction of the hook frame is arranged on the side of the follower element facing the hook frame, and / or an elastomer element projecting axially in the direction of the follower element is arranged on the end side of the hook frame facing the follower element.

The invention provides a track vibration insulation mounting plate with a dustproof function. The track vibration insulation mounting plate comprises a vibration insulation ring, a vibration insulation spring, a vibration absorption spring, a dustproof sleeve, vibration absorption liquid, a bolt, an anti-vibration screw, a lower vibration absorption plate and an upper vibration absorption plate, wherein the vibration insulation ring is arranged on the peripheral surface of one end of the bolt in a nesting manner, the vibration insulation spring is arranged on the peripheral surface of the middle part of the bolt, the anti-vibration screw is arranged at the bottom end of the bolt, the vibration absorption liquid is arranged at the upper end of the lower vibration absorption plate, the anti-vibration screw comprises a threaded rod, a first magnet, a fixing piece and a second magnet, the first magnet is arranged on the peripheral face of one end of the threaded rod, the fixing piece is arranged on the lower end face of the threaded rod, and the second magnet is arranged on the outer side face of the fixing piece. According to the track vibration insulation mounting plate, due to the arrangement of the vibration insulation spring, the dustproof sleeve and the anti-vibration screw, the dustproof effect is good, the vibration insulation effect of the vibration insulation spring is good, the bolt fixing effect is good, the vibration insulation and noise reduction effects are good, and market application and popularization are facilitated.

The invention discloses an engine decoration cover. The engine decoration cover comprises a cover plate. Concave parts used for avoiding a gas inlet pipe of an engine are arranged on the portion, placed below the gas inlet pipe of the engine, of the right side part of the cover plate in a separated manner. By arranging the concave parts, the height of the right side part of the cover plate is reduced, the problem that the engine decoration cover interferes with a quarter-wavelength pipe in a gas inlet system is solved, collision noise in the driving process is effectively avoided, and therefore driving noise is reduced. The invention further discloses an automobile with the engine decoration cover.