499results about How to "Reduce eccentricity" patented technology

A variable displacement oil pump for an automotive engine. The oil pump includes a cam ring accommodating thereinside a pump element having a rotor. The cam ring is swingingly movably accommodated in a housing and biased in a direction to increase an eccentricity amount of the cam ring relative to the axis of the rotor by a biasing member. First and second pressure chambers are defined inside the housing by the outer peripheral section of the cam ring. The first pressure chamber is supplied with a discharge pressure to be applied to the cam ring to oppose to a biasing force of the biasing member. The second pressure chamber is supplied with the discharge pressure to be applied to the cam ring to assist the biasing force of the biasing member. Additionally, a control device is provided for controlling supply of the discharge pressure to the second pressure chamber.

The invention relates to a nozzle adjustment mechanism of equipment using such nozzle and adjustment method thereof and the equipment using the nozzle adjustment mechanism. The nozzle adjustment mechanism includes nozzles, connection frame, bottom board, wherein the nozzles is fixed to the connection frame, and the turning position of the nozzle is adjusted by coordination of eccentric bolt and locating pin, and angle of pressure spring is adjusted to implement return adjustment; the connection frame equipped with the nozzles inserts into mounting hole arranged on the bottom board, and the position where the connection frame and the nozzles locate on the bottom board is adjusted by forward and backward adjusting the bolt and the pressure spring covering the bolt. The invention has advantages of easy adjustment and high adjustment precision by improving the mechanical structure.

The package structure for a high-speed semiconductor light emission assembly comprises: a dish-type case with RF connector, a semiconductor refrigerator to control the work temperature of emission chip, a KOVAR metal heat sink, a medium heat sink substrate, a light emission device, a thermistor, a backlight detector, the metal wire to connect dc connection electrode and case pin, a coplanar waveguide transmission lie on medium substrate, and optical coupling assembly. Wherein, it uses BTF standard package form for dc terminals outside the case.

An improved method of joining fiber composite laminates is disclosed. Two fiber composite laminates may be joined together end-to-end. The bonding is done through the thickness of the fiber composite laminates. There are two ways to form the bond: (1) non-interlocking; and (2)

Electrical connectors are provided including a connector body with a tubular socket to receive an electrical conductor. A clamping means is arranged to secure the electrical conductor within the socket. A socket insert fits within the socket so as to reduce the effective size of the socket. The socket insert is tubular and is adapted to be deformed by the clamping means into retaining engagement with the electrical conductor.

The invention provides an on-line slitting device suitable for RFID (Radio Frequency Identification) tag production, and belongs to the field of RFID encapsulation. The on-line slitting device comprises a supporting pillar component, a blade moving plate, slitting blade components, a blade distance adjusting component, a blade moving plate adjusting component, a coupler and a motor, wherein the supporting pillar component comprises a supporting pillar, and the surface of the supporting pillar is provided with a sliding groove; the blade moving plate is arranged in the sliding groove; the slitting blade components are arranged on the blade moving plate; the blade distance adjusting component is detachably arranged on the supporting pillar and is used for adjusting the axial distance of the slitting blade components adjacent to the blade distance adjusting component; the blade moving plate adjusting component is used for driving the blade moving plate to slide axially in the sliding groove of the supporting pillar, and thus the axial positions of multiple slitting blade components can be integrally adjusted; one end of the coupler is connected to the other end of the supporting pillar; an output shaft of the motor is connected with the other end of the coupler, the supporting pillar and the multiple slitting blade components which are located on the supporting pillar can be driven to rotate together through the rotation of the motor, and thus the angles of the multiple slitting blades can be integrally adjusted. According to the on-line slitting device suitable for the RFID tag production, provided by the invention, the positions and the angles of the slitting blades can be conveniently adjusted, the slitting efficiency can be increased, and the service life of the slitting blades can be prolonged.

The invention relates to a prestressed hollow composite slab and a manufacturing method thereof, and belongs to the field of normal building construction. The composite slab comprises prefabricated pieces (1) and composite layers (2). Thickness of a bottom plate (3) of each prefabricated piece (1) is greater than or equal to 35 mm and less than or equal to 60 mm, prestressed steel wires (4) in the bottom plate are located at the upper parts of transversal steel bars (5), and the length of each prestressed steel wire (4) and each transversal steel bar (5) extending out of the corresponding bottom plate (3) is greater than or equal to 50 mm; the width of each prefabricated piece is greater than or equal to 1500 mm, light-weight material filling pieces (6) are arranged at the upper part of each prefabricated piece (1); the heights of concrete solid ribs (7) between adjacent filling pieces are greater than or equal to 50 mm; the transversal steel bars (5) between adjacent prefabricated pieces (1) are overlaid in a joint area (8), upper part steel bars (10) of the composite slab are bound, composite layer concrete is poured, and the composite slab is formed. According to the prestressed hollow composite slab and the manufacturing method thereof, the self-weight of the composite slab is light, the stiffness in the longitudinal direction and the transversal direction is high, the application range is large, and transportation and installation are convenient. The prestressed hollow composite slab and the manufacturing method thereof have good economic efficiency and applicability, and play a role on promoting the development of building technology.

The invention relates to a washing machine with an active water injection balancing ring and a control method of the washing machine. The washing machine comprises an outer barrel and an inner barrel. The balancing ring is arranged at an opening of the inner barrel. The balancing ring is of a circular ring structure. A hollow cavity is formed in the balancing ring. The washing machine is further provided with a water inlet structure and a water drainage structure, wherein the water inlet structure is used for injecting water into the hollow cavity to balance the load eccentric quantity, and the water drainage structure is used for discharging water in the water inlet structure. According to the washing machine, the quantity of filler in the balancing ring can be changed, the unbalance effect caused by too little filler and excessive balance caused by too much filler are avoided, and the problem that the quantity of the filler in the balancing ring of a common washing machine can not be changed is solved. The balancing ring is hollow inside, and no filler with a fixed quantity is arranged in the balancing ring, so the weight of the balancing ring is reduced, the manufacturing processes of the balancing ring is simplified, the manufacturing cost is lowered, and the production efficiency is improved; moreover, energy consumption is lowered, accurate control over balance is achieved, the dehydrating vibration and noise are lowered, the distribution frequency is reduced, and the dehydrating time is greatly shortened.

An oil pump includes first and second control chambers, a biasing mechanism, and a changeover mechanism. The changeover mechanism connects the first control chamber with a drain portion when a valving element is in a first position, introduces a discharge pressure into the first and second control chambers when the valving element reaches a second position, and drains oil of the second control chamber to the drain portion and introduces the discharge pressure into the first control chamber when the valving element reaches a third position. The changeover mechanism changes from the first position to the second position, when the discharge pressure becomes higher than a pressure level at which the cam ring can move against a set load of the biasing mechanism, and is lower than a pressure level at which a biasing force of the biasing mechanism is increased in a stepwise manner.

In a hydraulic pump, a cam ring is provided in a cylindrical adaptor for movement in a radial direction, and a differential pressure control valve is provided to control internal pressure and load pressure at the front and back sides of a variable orifice to be introduced into action chambers and formed at the opposite sides of the cam ring for controlling a discharge amount of the pump in accordance with the rotation speed of the pump. The differential pressure control valve is operated under the internal pressure and load pressure respectively introduced into action chambers and the load of a thrust spring biasing the differential pressure control valve toward the internal pressure chamber. The load of the thrust spring is increased or decreased in accordance with an increase or a decrease of the load pressure. The increase or decrease of the load pressure is effected by a load pressure responsive piston loaded by a thrust spring and engaged with the differential pressure control valve at one end thereof in the internal pressure chamber.

The invention relates to a washing machine with a water filling port type balancing ring and a control method of the washing machine. The washing machine comprises an outer barrel and an inner barrel. The balancing ring is arranged at a clothes charging port of the inner barrel. The balancing ring is of a circular ring structure. The inner circumference of the balancing ring is provided with water filling ports, and the water filling ports are used for supplying water into the balancing ring as balancing liquid to balance the load eccentric quantity. The outer circumference of the balancing ring is provided with at least one water drainage port which can be opened or closed. According to the washing machine, the balancing ring is hollow inside, and no filler with a fixed quantity is arranged in the balancing ring, so the weight of the balancing ring is reduced greatly, sealing does not need to be considered, the manufacturing processes of the balancing ring are simplified, the manufacturing cost is reduced, and the production efficiency is improved; the washing machine with the water filling port type balancing ring does not need to drive the filler in the balancing ring to rotate together, so energy consumption is lowered, an appropriate amount of water can be injected according to the measured load eccentric quantity, the unbalance effect caused by too little filler and excessive balance caused by too much filler are avoided, and the problem that the quantity of the filler in the balancing ring of a common washing machine can not be changed is solved.

A washing machine is provided. The washing machine controls a dehydration rotation speed by detecting a phase difference between a ball balancer and the laundry. Further, the washing machine controls a dehydration rotation speed at a dehydration segment based on a dehydration rotation speed of a driving device. Thereby, the washing machine minimizes energy using in a dehydration process by accelerating the dehydration rotation speed at a point at which a phase difference between the ball balancer and the laundry is a maximum. Further, by accelerating the dehydration rotation speed at a point at which the phase difference is a maximum, a vibration of the washing machine is remarkably reduced.

There is disclosed a scroll compressor having an object of stabilizing the moving of an orbit scroll while suppressing the start load of the scroll compressor. In the scroll compressor, a slide bush having a slide face forming a predetermined angle with respect to the direction of gas load of a gas in a compression chamber is interposed on an eccentric shaft of a shaft for driving the orbit scroll, so that when the load of the gas in the compression chamber is applied, the eccentric amount of the eccentric shaft increases. The scroll compressor includes a spring member interposed between the slide bush and the eccentric shaft and configured to constantly urge the eccentric shaft to decrease the eccentric amount of the eccentric shaft, and this spring member urges the eccentric shaft to press the eccentric shaft onto the slide face of the slide bush.

The invention relates to an automatic eccentric correcting method and device for machining a hollow shaft. The automatic eccentric correcting method comprises the following steps that the hollow shaft is fixed to a turning center; the X coordinate value and the Y coordinate value of the axial center of an eccentric inner hole of the hollow shaft are measured, and the eccentric amount of the eccentric inner hole is calculated; an inner hole chamfer is machined with the axial center of the eccentric inner hole as the benchmark; the hollow shaft is automatically pre-tightened to enable the axial center of the eccentric inner hole to coincide with the axial center of the turning center, and automatic eccentric correction is achieved; the outer circle of the hollow shaft is turned roughly; the inner hole of the hollow shaft is turned in a fine mode, and then eccentric correction is finished. The automatic eccentric correcting method and device for machining the hollow shaft can achieve automatic eccentric correction of the eccentric hollow shaft on the turning center, is simple in operation process and is high in efficiency, and the production efficiency is improved by 5-8 times compared with a manual method. The eccentric amount of the outer circle and the inner hole of the hollow shaft can be lowered to below 0.3mm, and the machining accuracy of the hollow shaft is largely improved.

Systems and methods for guiding a seal assembly associated with a string of production tubing, or a tubular member generally, into a receptacle within a wellbore. The muleshoe of a seal assembly is provided with an auto entry guide device in the form of a guide member or kickover lug that is radially moveable with respect to the muleshoe. The kickover lug is collapsible radially inwardly and biased radially outwardly. The auto entry guide device may also include a centralizer bowspring that is mounted upon the muleshoe. Additionally, the muleshoe is mounted for rotational movement with respect to the seal assembly.

Provided is a motor for an electric power steering apparatus, in which vibrations and noises are suppressed. The motor for an electric power steering apparatus includes: a motor section (1) for outputting an assist torque to a handle of a vehicle; and a controller (2) for controlling driving of the motor section (1). The motor section (1) includes: a rotor (14, 14A) having P poles; and a stator (15, 15A) provided so as to surround the rotor (14, 14A), the stator including: a stator core (23) provided with n slots formed thereon and housed in a frame (4); and three-phase stator windings (25) wound around the slots (22). The controller (2) is provided between a boss (18) and the motor section (1) so as to surround the output shaft (12).

An RFID tag having mounted thereon an IC chip capable of receiving and delivering information from and to an external source without contact. In the RFID tag, a central axis of its own antenna having mounted thereon the IC chip coincides with a center of the RFID tag, and an antenna width is controlled. That is, a position of the central axis of the antenna is controlled to correct the mass eccentricity of the RFID tag. Further, the RFID tag is an RFID tag having mounted thereon the IC chip capable of receiving and delivering information from and to an external source without contact, and an RFID tag having attached thereon the IC chip at a position in which a first and a second antenna lengths are different from each other.

An apparatus for measuring eccentricity of an optical lens includes a rotary lens holder which supports a first lens surface of an optical lens by vacuum aspiration; a first determining device for determining whether a curvature center of a central portion of the first lens surface is positioned on the rotational axis; a second determining device for determining whether a curvature center of a peripheral portion of the first lens surface is positioned on the rotational axis; and an eccentricity detection device which detects an eccentricity of the optical lens with respect to the rotational axis to calculate an eccentricity of a vertex of the first lens surface with respect to the radial center of the optical lens, including a detector contacts a rim of the optical lens to detect the eccentricity of the optical lens with respect to the rotational axis.