55results about How to "Reduce impact sound" patented technology

A paper feeder includes: a multiple number of paper feed cassettes arranged abreast at approximately the same level in the sheet feed direction. These paper feed cassettes are formed into a unibody structure so that they can be pulled out altogether. The more upstream a paper feed cassette is located with respect to the sheet feed direction, the higher the level of the upper surface of the paper feed cassette is arranged. This arrangement affords a space over the downstream paper feed cassette, in which a feed path for recording paper picked up from a paper feed cassette located on the upstream side can be arranged.

The invention relates to a lock body component of a door lock, and in particular provides a silent buffer spring bolt structure. The technical scheme adopted by the invention is as follows: a liner plate, a latch bolt, a bottom box, a sliding block, a dial peach and a buffer block are arranged on the silent buffer spring bolt structure; a rubber gasket is fixedly embedded in front of a tail pin at the tail end of the latch bolt; the latch bolt extends into the bottom box, and the rear part of the latch bolt presses against a reset spring; a buffer cavity is formed in the middle of the bottom box and the buffer block can be embedded in the cavity; a box cover is buckled with the bottom box, the sliding block is embedded in the bottom box, an embedding cavity is formed on the inner side of the front end of the bottom box to embed the tail pin and the rubber gasket at the tail end of the latch bolt, a guide column is arranged on one side of the outer wall at the front end of the bottom box and is embedded with a guide straight groove in the middle of the box cover, and a buffer column is arranged on the other side of the outer wall to match with the buffer block embedded in the bottom box and is embedded into a buffer bent groove formed in the buffer block; and when the latch bolt returns, the latch bolt is influenced by the resistance of the buffer bent groove in the buffer block, and slows down at the tail end of the stroke. Therefore, the silent buffer spring bolt structure disclosed by the invention realizes functions of slow and stable restoration of the latch bolt, and achieves a technical effect of reducing door lock using noise.

The invention relates to a target body structure for automatically scoring BB bullets or bullet bodies. The target body is provided with at least one target area, at least one infrared induction device and at least one electric display scoring device, wherein the surface of the target area is provided with sticky soft matters, and the at least one infrared induction device is arranged at a proper position near the target body surface; the electric display scoring device is provided with a microcomputer CPU, the infrared induction device, when the BB bullets or bullet bodies are ejected and thrown to the front of the surfaces of the sticky soft matters of the target area, detects and induces the BB bullets or bullet bodies accurately and generates an induction signal, the induction signal is transferred to the microcomputer CPU, and the microcomputer CPU judges whether the BB bullets or bullet bodies hit right coordinate positions of the target surface and automatically scores, and thus, the shooting or throwing of the BB bullets or bullet bodies can be added with effects of voice and light, sound and music and various automatic scoring game mode display functions of LEDs, LCDs, backlight LCDs, liquid crystal screens and backlight plates.

A belt unit used for an image forming apparatus is provided. The belt unit includes a rotatable endless belt, a plurality of stretching members configured to stretch the belt, an urging member, and a contact and separation unit configured to be able to switch a position of the stretching member urged by the urging member. In moving the stretching member urged by the urging member from the separation position to the contact position, the contact and separation unit makes one end side of the stretching member urged by the urging member in a longitudinal direction coming into contact with the inner surface of the belt faster than the other end side, and temporarily decreases the movement speeds of the both ends of the stretching member in the longitudinal direction respectively before arriving at the contact position.

The invention discloses a mechanical clutch device for a deceleration clutch of a washing machine, relates to the technical field of washing machines, and overcomes the defects that the conventional washing machine clutch adopting the meshing clutch method is more complex in transmission structure, and is not energy-saving, and is high in impacting noise. The device comprises a sliding block, and is characterized in that the sliding block is mounted on the lower shaft sleeve of the deceleration clutch in an up-and-down sliding manner through a spline; the sliding block is movably connected with one end of a shifting lever and is controlled by the shifting lever to slide vertically; the shifting lever is rotationally mounted on a shifting lever supporting rotating shaft in a sliding manner coaxially through a lifting lever restoration torsional spring; the other end of the shifting lever is movably connected with a crank; the crank and a synchronous motor are coaxially and fixedly connected to be mounted on the casing of the deceleration clutch; the upper end of the sliding block is clutched with a washing clutch plate while the lower end of the block is clutched with the a dewatering clutch gear; a slanting surface for driving the lifting lever to slide is arranged on the protruded side of the crank. According to the invention, the mechanical clutch device is simple and reliable in transmission structure, and low in meshing speed and is energy-saving, and the impacting noise during the gear meshing process can be effectively reduced.

The invention provides a tumbling-box washing machine which has the advantages of miniaturization, low-vibration and low noise. The tumbling-box washing machine at least comprises a water channel (3) arranged in the chassis (1) of the machine and supported by a spring and a oscillator damper (7), a washing barrel (4) which is rotatablely arranged in the water channel (3) and stores washing, and a electric motor (5) drives the washing barrel (4). The invention utilizes the oscillator damper (7) to suppress oversized vibration according to the size of the vibration of the wash channel (3), wherein, the oscillator damper (7) has the property that the vibration can be converted into large damping force of the wash channel (3) only during the wash channel (3) moves upward. Simultaneously, when the vibration is small, the aim of reducing transmitting of the vibration is attained by decreasing the damping force.

The invention discloses a low-energy-consumption oilless silence air compressor. The low-energy-consumption oilless silence air compressor comprises at least one air cylinder assembly. Each air cylinder assembly comprises a piston and an air cylinder containing the piston, wherein a ceramic film layer is arranged on the inner wall of a cylinder sleeve of the air cylinder, the piston comprises a piston body, a composite material layer arranged on the outer side of the piston body in a sleeving manner, a piston ring embedded in the outer side of the composite material layer, and the piston ring and the composite material layer are made of the same materials and prepared through carbon material containing composite materials. During work, each piston reciprocates in the corresponding cylinder sleeve, each piston ring rubs with the ceramic film layer on the inner wall of the corresponding cylinder sleeve, the composite material layer on the outer side of each piston body plays a guiding role in the corresponding cylinder sleeve, and therefore the friction coefficient between each piston and the corresponding cylinder sleeve is reduced, and efficiency is improved.

The invention discloses an automobile front cover lock. The automobile front cover lock comprises a front cover lock shell, a ratchet wheel, a front cover lock catch, a pawl, a ratchet wheel tension spring, a balance torsional spring shaft and a balance torsional spring. The pawl is installed on the front cover lock shell, one end of the ratchet wheel tension spring is fixed relative to the front cover lock shell, the other end of the ratchet wheel tension spring is installed on the ratchet wheel, a clamping opening used for clamping the front cover lock catch is formed in the ratchet wheel, the balance torsional spring is arranged on the balance torsional spring shaft in a sleeving mode, one end of the balance torsional spring is fixed relative to the front cover lock shell, the other end of the balance torsional spring abuts against the lower surface of the front cover lock catch, and the balance torsional spring shaft is fixed relative to a rotating shaft of the pawl. Noise is reduced when the automobile front cover lock is locked or unlocked.

The invention provides a wall structure capable of inexpensively enhancing the impact reducing effect as a heavy floor impulsive sound reducing countermeasure of a house made of thin and lightweight shape steel. In this wall structure 100, the wall structure 100 is formed by sticking plaster boards 20 and 21 to a plurality of vertical frames 10. A connecting member 30 is arranged between the vertical frames 10 to a large amplitude part (a belly part) when the wall structure 100 vibrates, and plane members 20 and 21 are fixed to the vertical frames 10 and the connecting member 30.

The invention discloses a negative oxygen ion generator. The negative oxygen ion generator comprises a shell, an air inlet filtering assembly, a fan pressurization assembly, a water spraying cavity, an air outlet cavity and a water supplementing tank, wherein the air inlet filtering assembly comprises a filtering layer, a chemical treatment layer and a drying layer, the fan pressurization assembly comprises an air exhaust impeller and a vortex cavity, the bottom of the water spraying cavity is filled with water, and labyrinth filtering layers are arranged on the two sides of the water spraying cavity; an aerator is clamped between the labyrinth filtering layers and comprises a driving water wheel blade, an impact cavity and a driven water wheel blade; and a water adding port is arranged at the upper end of the water supplementing tank. According to the negative oxygen ion generator, a motor rotates to drive the air exhaust impeller to suck outdoor air into the tank body, the outdoor air passes through the air inlet filtering assembly after being primarily filtered, after being pressurized by the vortex cavity and rotating at a high speed, the water is driven by the water wheel blades to impact the inner wall of an oxygenation cavity to form high-concentration negative oxygen ions, and the high-concentration negative oxygen ions are blown out from air outlets after being combined with the air, so that the negative oxygen ion generator is suitable for being used in environments such as families, office buildings, shopping malls and ecological oxygen bars with larger spaces, and is low in manufacturing cost.

The high-safety mechanical speed-limiting elevator safety tongs comprise a top plate, side plates, connecting plates, a square plate, a tongs body and fixing nails, the two side plates arranged side by side are installed at the bottom of the top plate, the connecting plates are installed on the outer walls of the adjacent sides of the two side plates, and vertical plates are installed on the outer walls of the adjacent sides of the two connecting plates; a distance sensor is installed on the front face of the vertical plate, and an alarm is installed on the top of the top plate. Square plates are installed on the outer walls of the adjacent sides of the two sets of side plates. By arranging the distance monitoring device, when the distance between the guide rail and the distance sensor exceeds a set range, the alarm can make a set sound, distance data of the distance sensor can be transmitted to an elevator master control room, a tooth groove plate in the device has the disassembling and assembling functions, replacement is convenient, meanwhile, material resources can be saved, and when the device is braked, the device is convenient to disassemble and assemble. Impact can be relieved through the spring, the device has the movable dust blowing function, and it can be ensured that no dust is accumulated on the tooth groove plate.

The invention relates to a stylus pen point composite material, a stylus pen, and a pen point moulding method. The stylus pen point composite material comprises powdery ultrahigh molecular weight polyethylene, powdery low density polyethylene, silicone oil, calcium stearate, a lubricant, carbon black, and light calcium carbonate. According to the pen point moulding method, sintering moulding is adopted, so that influences of the poor fluidity of ultrahigh molecular weight polyethylene are avoided, and limit caused by molecular weight value is avoided. Further study modification on the components of the stylus pen point composite material is carried out, different components are added for cooperation, so that the obtained pen point is low in noise and high in smoothness, and user experiencesimilar to that of conventional writing mode is provided.

The invention provides a two-stage variable valve lift mechanism for an internal combustion engine, and is applied to the technical field of automobile engines (internal combustion engines). An adjusting part B(7) of the two-stage variable valve lift mechanism for the internal combustion engine is machined and formed by using an MIM process; an adjusting part A(6) is machined and formed; a valve pin B(3) is arranged in a structure which can act on the adjusting part B(7) to drive a shaft sleeve B(5) to axially move leftwards relative to a spindle (1); and the valve pin B(3) is also arranged ina structure which can act on the adjusting part A(6) to drive a shaft sleeve A(4) to axially move rightwards relative to the spindle (1). According to the two-stage variable valve lift mechanism forthe internal combustion engine, the cam state switching of an engine can be accurately realized, the engine can more scientifically complete combustion and work in the optimal working state under different working condition requirements, and the heat efficiency is improved.