78results about How to "Avoid knocking noise" patented technology

A low release effort eccentric double ratchet, double pawl vehicle latch includes a ratchet, a primary pawl, an auxiliary ratchet and a secondary pawl. A drive mechanism including a gear cam wheel sequences movement of the secondary pawl to open and reset the latch. Upon reset, the drive mechanism actuates the auxiliary ratchet back to a closed state in a soft manner without using a hard stop; instead the latch has a cushioning spring that is used to softly stop the gear train during the reset absorbing motor energy and thus eliminating impact noise.

A torsional vibration damper has a damper mass carrier at which is received at least one damper mass movable relative to the damper mass carrier and with at least one stop. The at least one damper mass has a stop side with a geometric shaping. At least one stop is associated with the damper mass, and has an axial overlap with the at least one damper mass in extension direction of a central axis and a stop profile at its side facing the stop side of the damper mass. At least one stop receiver is associated with the least one stop for the at least one damper mass. The geometric shaping which is provided at the at least one damper mass has a first contact region operative at least substantially in radial direction and a second contact region operative at least substantially in tangential direction. The first contact region can be brought into operative connection with the stop, and the second contact region can be brought into operative connection with the stop receiver.

The invention relates to a method for controlling gear engaging and gear shifting of a double-clutch transmission and a hydraulic control system. The method for controlling gear engaging of a shifting fork of the double-clutch transmission comprises the step of determining a target gear, and the step of simultaneously applying forward gear shifting force and reverse gear shifting force to the shifting fork according to the target gear so as to move the shifting fork to achieve gear engaging; the forward gear shifting force is larger than the reverse gear shifting force. Through the method for controlling gear engaging and gear shifting of the double-clutch transmission and the hydraulic control system, the moving speed of the shifting fork of the double-clutch transmission can be accurately controlled in the gear engaging process, and the noise, vibration and harshness (NVH) performance of a vehicle is improved remarkably.

A torsional vibration damper is provided with a damper mass carrier at which is received at least one damper mass that is movable relative to the damper mass carrier and at least one stop. The at least one stop is associated with each stop side of the at least one damper mass. The at least one damper mass and the stop have an extension in extension direction of a central axis. The at least one damper mass has a plurality of damper mass elements in extension direction of the central axis, while the stop has in extension direction of the central axis a stop profile at its side facing the stop sides of the damper mass elements. The stop profile has different radial distances from the central axis in association with the damper mass elements.

Disclosed is a uroflowmeter attachable to a toilet capable of diagnosing a BPH with high reliability and convenience in a sanitary way without the constraints of a space by checking the urinary flow rate of a patient. The uroflowmeter includes a toilet bowl for temporarily storing feces and urine, a connection tube which has one end introduced into water of the toilet bowl, a pressure measuring unit connected with an opposite end of the connection tube to measure pressure inside the toilet bowl, a signal analyzing unit for analyzing pressure signals from the pressure measuring unit to measure a urinary volume signal and a urinary flow rate signal, a display unit for displaying the urinary flow rate signal measured by the signal analyzing unit, and a wireless transceiver unit for making data communication with the signal analyzing unit in a wireless way.

A mass damper system is provided with a damper mass carrier with at least one damper mass movable relative to the damper mass carrier and at least one stop. The damper mass moves within a predetermined movement region when a rotational movement of the damper mass carrier exceeds a predetermined limit speed. The predetermined movement region has a first movement region portion bounded at one end by an initial position in which the damper mass is free from a deflection in circumferential direction and by a limit position in which the damper mass has undergone a deflection, and a second movement region portion is defined at one end by the limit position and at the other end by a stop position in which the damper mass has come in contact with the stop.

The present disclosure provides an engine valve actuation system comprising: a camshaft, with a plurality of cams: a control shaft one; a control shaft two; and a plurality of valve actuation units, each unit further comprising: (i) at least one set of an engine valve and an engine-valve return spring; (ii) an lost-motion module, further comprising a collapsible high-pressure chamber, and operably converting the profile of the one of the cams and the collapsing motion from the high-pressure chamber to corresponding movement of the at least one engine valve; and (iii) a hydraulic circuit, further comprising: a trigger valve one and a trigger valve two, being controlled respectively by the control shaft one and the control shaft two.

In a door checker for automobile which is applicable to vehicles having different full open angles of doors, and which makes no chattering noise by vibration, a free end portion of a check lever plate is provided with a core plate exposed portion where a core plate is exposed from a cover layer, a full open stopper mechanism includes: a stopper pin fitted in the core plate exposed portion, the stopper pin having anti-falling expanded portions; a stopper plate swingably supported on the stopper pin; and a cushion member supported by the stopper plate, and configured to cushion an impact of full opening of the door by receiving a case, and a pressing piece is provide integrally and continuously to the cover layer, the pressing piece configured to press the cushion member toward the stopper pin to thereby keep the stopper plate in contact with the stopper pin.

Disclosed is a silent mortise lock. The silent mortise lock comprises a fixing plate and an upper cover plate. The side edge of the fixing plate is provided with a stopping plate with a spring bolt hole; the inside of the fixing plate is provided with an inclined spring bolt limit rack, an inclined spring bolt stopping plate, a lock rudder, an inclined spring bolt, a square spring bolt and an interlock rod, wherein the inclined spring bolt, the square spring bolt and the interlock rod are in linkage with the lock rudder; the tail end of the inclined spring bolt is provided with a slide bar, which can slide on the inclined spring bolt limit rack and the inclined spring bolt stopping plate in a penetrating mode, and the slide bar between the inclined spring bolt and the inclined spring bolt stopping plate is provided with a front pushing spring which keeps the inclined spring bolt in a spring-out state all the time. The silent mortise lock is characterized in that the tail end of the slide bar is provided with an upper limit sheet and a lower limit sheet; a poke rod fixed onto the lock rudder is arranged between two limit rods; the lock rudder is provided with a buffering hydraulic cylinder for buffer the rotating speed of the lock rudder. The silent mortise lock has the advantages of, by buffering the rotating speed of the lock rudder through the buffering hydraulic cylinder on the lock rudder, avoiding the impact noise due to rapid rebound and reset of a door opening handle and the inclined spring bolt, and meanwhile, being noiseless, reducing wearing, prolonging the service life and the like.

The invention discloses a mosque automatic clutch, wherein an active cover of the clutch frame is connected with an axial sheath with a spline hole, the active cover is arranged with at least two eccentric mosque blocks which can radial move on the active disc, the inner arc of each eccentric mosque is arranged with a radial sliding groove at middle, the sliding groove of each mosque is sliding engaged with a pin axle of the active disc, the outer arc of each mosque block is adhered with a friction block between which and the inner wall of the clutch frame a clearance space is arranged, each eccentric mosque is arranged with an arc groove while all grooves are connected to form an annular groove, two ends of a flexible spring are connected to be arranged in the annular groove, the annular groove is shaded by a baffle plate, and a baffle ring clamps a pin axle to axially position the eccentric mosque blocks. The invention can contact the arc face of the friction block completely with the clutch frame when in work, to improve torque and make friction uniform to prolong the service life of friction block.

The invention discloses a rotary cash-out shutter, comprising a frame, a turnover shutter, a shutter actuator, a driving mechanism and a self-locking mechanism, wherein the turnover shutter is fixed on the shutter actuator; the driving mechanism is fixed on the frame and drives the shutter actuator to rotate; the driving mechanism comprises a driving motor, a driving shaft, a driving synchronous belt pulley, a driven synchronous belt pulley and a synchronous belt; the driving motor is fixed on the frame, two ends of the driving shaft are rotationally arranged on the frame, the driving synchronous belt pulley is fixed on an output shaft of the driving motor, the driven synchronous belt pulley is fixed on the driving shaft, and the synchronous belt encircles the driving synchronous belt pulley and the driven synchronous belt pulley; the bottom of the shutter actuator is fixed on the driving shaft; and the self-locking mechanism automatically locks the shutter actuator when the turnover shutter is closed. The rotary cash-out shutter is small in floor area, low in cost and high in reliability.

A vane pump is composed of a casing having a cylindrical inner bore and a rotor disposed in the inner bore with an eccentric relation to the inner bore. A circular pump chamber formed between the rotor and the inner bore is divided by vanes disposed in the rotor into plural pump chambers each changing its capacity according to rotation of the rotor. The vane is slidably disposed in a groove formed in the rotor in a slanted relation with respect to a rotational axis of the rotor. When the rotor rotates, the vane is pushed backward of the rotational direction by fluid in the pump chamber. The pushing force includes a component for pushing the vane upward toward an upper plate closing an upper opening of the inner bore. The vane is pushed against the upper plate to thereby prevent hitting noises between the vane and the upper plate.

A discharge valve apparatus for a reciprocating compressor comprises a discharge cover having built-in volume so as to cover a front end surface of the cylinder; a discharge valve disposed so as to be contacted/separated to/from the front end surface of the cylinder by a piston which undergoes a reciprocating movement inside the cylinder; and a valve spring having both ends respectively adhered to rear side of the discharge valve and to inner surface of the discharge cover so as to elastically support the rear side of the discharge valve. A rotation radius of the valve spring of a conical type is formed to be gradually reduced or increased so that impacts of a part to other parts during the compression can be prevented. Accordingly, when the valve spring is compressed in accordance with the compression and discharge strokes of the piston, the impacting noise caused by the impacts of the respective parts in the valve spring can be prevented previously.

The invention discloses a pump body structure and a compressor. The pump body structure comprises a crankshaft (1), an upper flange (2), a cylinder (3) and a lower flange (4), wherein the upper flange (2), the cylinder (3) and the lower flange (4) are sequentially arranged along the axial direction of the crankshaft (1); a roller (7) is arranged inside the chamber body of the cylinder (3) and sleeves the outside of the crankshaft (1); the cylinder (3) is also provided with a sliding groove (5); a sliding plate (6) is arranged inside the sliding groove (5) in a sliding manner; the other end of the sliding plate (6) is rotationally connected with the roller (7). The pump body structure disclosed by the invention is capable of solving the problem that the refrigeration capacity of an air conditioner is reduced sharply because high pressure and low pressure in the cylinder body are mixed when the sliding plate and the roller are easily separated.

The invention provides a display device which comprises a display panel, a back plate, a frame and an exciter, the exciter is located in the frame, and the exciter comprises a shell, a coil, a magnet, a magnetostrictive part and a vibration part; wherein the shell is connected with the frame or the back plate, the shell surrounds the coil, the coil is used for generating an alternating magnetic field according to a control signal, the coil is annular, the magnet and the magnetostriction piece are both located in the coil and are arranged in the axial direction of the coil, one end of the vibration piece is located in the shell, and the other end of the vibration piece extends out of the shell. The vibrating piece, the magnet and the magnetostrictive piece are tightly pressed between the frame and the shell; and the magnetostriction piece can generate telescopic deformation along the axial direction of the coil in a superposed magnetic field of the alternating magnetic field and the magnetic field generated by the magnet, and drives the frame to vibrate and produce sound. The display device provided by the invention is small in thickness and conforms to the ultrathin development trend of the display device.

The invention provides a limiting structure for a compressor, belonging to the field of refrigeration compressors. The limiting structure comprises a shell and a machine core located in the shell, wherein a plurality of pressure springs are arranged between the machine core and the shell, a limiting pin is further arranged on the machine core, a limiting ring is arranged on the inner side of the shell, and the limiting pin is inserted into the limiting ring. The limiting structure has an all-dimensional limiting function, the release of the springs can be prevented, and the metal impact noisecan be prevented; and the limiting structure is simple and easy to assemble.

The invention discloses a phaser oil control valve and a control method thereof. The control valve comprises a control valve body. A valve element spring and a valve element connected with the valve element spring are arranged in the control valve body. One end of the control valve body is connected with an electromagnetic head, and a push rod connected with the valve element and an electric drive connected with the push rod are arranged in the electromagnetic head. The other end of the control valve body extends to form a one-way valve body. A spring holder is arranged in the one-way valve body and provided with a one-way valve spring, and the one-way valve spring is connected with a one-way valve steel ball. An oil inlet communicated with the control valve body is formed in the one-way valve body. When an engine is started, a phaser is full of oil, oil pressure in the phaser can be built fast, the adjusting speed of the phaser can be increased when the engine is started, the knocking noise between a rotor and a stator is avoided, and noise risks are reduced.

The invention provides a flywheel structure of an engine and the engine, and relates to the field of vehicle engines. At least one set of bolt holes used for being connected with an engine crankshaft and at least one set of through holes used for reducing the rigidity of the flywheel structure are formed in a flywheel front cover, wherein each set of bolt holes are evenly distributed in a first circular ring, each set of through holes are evenly distributed in a second circular ring, and the first circular ring and the second circular ring are concentrically arranged. Considering that the excitation of bending achieved when a crankshaft flywheel group works is not only related to combustion excitation, but also related to the rotational inertia of the flywheel structure at the rear end of the engine, the rigidity of the flywheel structure is reduced by forming the through holes, and therefore the inertia of the flywheel structure is reduced, and the frequency of the flywheel structure is changed. Therefore, the inherent frequency of the flywheel structure is kept away from the frequency of a power assembly and a whole vehicle suspension, and knocking noise generated in a vehicle is avoided.