32results about How to "Soft operation" patented technology

A direct current-direct current (DC / DC) converter operated in the resonant mode of operation for converting a direct input voltage into a direct output voltage with a bridge circuit located on the input side and incorporating switching elements, with a resonance circuit incorporating a resonance inductance and a resonance capacitance as well as with a high-frequency transformer for galvanic separation is disclosed, the transformer incorporates at least one primary winding and at least one secondary winding with at least two winding terminals each. The alternating current (AC) output of the bridge circuit is connected to the primary winding and a rectifier bridge with diodes to the secondary winding. A voltage boosting circuit array is connected downstream of the resonant circuit in such a manner that at least one additionally controllable switching element is contained, which is connected in parallel or in series to at least one additional diode or to at least one diode of the rectifier bridge on the secondary side, this array being connected in parallel to the high-frequency transformer so that the additional switching element short-circuits the resonance circuit in a triggered condition so that energy is stored in the resonance inductance and is delivered in the non-triggered condition.

A DC-DC converter wherein a series reactor and primary-side terminals of a transformer are connected between output terminals of a full-bridge inverter in which each of an upper arm and a lower arm includes a switching element and a freewheel diode, and a rectifier circuit and a filter circuit are connected to secondary-side terminals of the transformer. The DC-DC converter includes a circulation current generation mode in which a circulation current flowing between the transformer and the switching element is generated in a power non-transmission period, and a circulation current interruption mode in which the circulation current is interrupted.

The present invention provides a low-cost resonant inverter circuit for ballast. The resonant circuit includes a transformer connected in series with a lamp to operate the lamp. A first transistor and a second transistor are coupled to switch the resonant inverter circuit. A second winding and a third winding of the transformer are used for generating control signals in response to a switching current of the resonant inverter circuit. The transistor is turned on once the control signal is higher than a high-threshold. Next, the transistor is turned off once the control signal is lower than a low-threshold. Therefore, soft switching operation for the first transistor and the second transistor is achieved.

A height regulator for a seat belongs to an automobile seat component, which comprises a first case which is provided with a first cavity, a second case which is connected with a side plate of the seat basin and is provided with a second cavity and a third axle hole, a first axle core a second axle core and a big roller which are arranged between the first cavity and the second cavity, a fan-shaped gear block which is connected with a seat cushion of the seat as well as a return spring and a wrench which are separately arranged at the outer side of the cover of the first case. The regulator has the advantages of small volume, simple structure and convenient installation; only one height regulator is needed on each seat, which can save usage cost; the movement has the good flexibility and the firm locking; as friction is used for driving and no space and gears exist between components, the operation is soft, flexible and energy-saving and the regulatory accuracy can be ensured; as the scope of the reciprocating motions of a wrench is small, the use space of the seat can be effectively increased; the free connection with any seat can be realized and the connection is simple; the height regulator for the seat of the invention has the wide application scope.

A seat height adjustment device belongs to vehicle seat accessories. Including: the central shaft connected with the tooth plate on the seat and the entire height adjustment device, the connecting plate fixed with the side plate of the seat basin, the return spring, the transmission mechanism has a pair of interacting pawls and ratchet wheels, and the accommodating pawl The ratchet plate, the anti-backlash plate to eliminate the axial gap, the shift block for the transmission torque, the wheel housing for accommodating the transmission block and the roller, the shaft sleeve, the wrench cover connected with the wrench, the gasket and the circlip. Advantages: small size, simple structure, easy assembly, and only one height adjuster needs to be installed on each seat, which can save the cost of use; good movement flexibility and firm locking; friction transmission is used, and there is no gap between the parts Clearance, no gear position, soft, flexible and labor-saving operation, which can ensure the adjustment accuracy; no clearance in the axial direction; small reciprocating movement range of the wrench, which can effectively increase the use space of the seat; it can realize the connection with any seat, and Simple connection and wide application range.

The invention discloses a mop which comprises a holding rod, a bracket connected to the lower end of the holding rod, and two rows of wiping rollers, wherein the two rows of wiping rollers are arranged on the bracket in parallel back and forth and can unidirectionally rotate; non-return directions of the wiping rollers in front and back rows are opposite; when the mop pushes forwards, the roller in the front row rolls forwards to wet the ground, and the roller in the back row stops for wiping the ground; and when the mop is pulled backwards, the roller in the back row backwards rolls to wet the ground, and the roller in the front row stops to wipe the ground. In the mopping process, the surfaces of the wiping rollers can be fully utilized; even if the rollers are dirt, falling dirt in the rolling process can be collected by the roller in a stopping state and is limited between two rows of rollers, so that the phenomena that the dirt and stain are distributed along the movement of the mop can be reduced or avoided, and the times of cleaning the mop in the mopping process can be reduced. The mop further comprises a wringer arranged in a separating manner. The wringer is of a tong-shaped structure with a simple structure; when the wringer is operated, the damage of the wringer to the rollers is little; when the wringer is damaged or lost, the wringer is only needed to be independently replaced; and the wringer can be also used for clamping solid waste on the ground.

The invention discloses a clutch cable separation devices, including cable and pedal bearings, and its characteristics are: a fixed period pulley bearings on the location box, the box set up a pulley positioning pulley, cable referred to pedal through the bearings, pulley position from the above box side to enter into position inside the pulley, and bypass the agencies mentioned in the pulley, the pulley fixed in the position described on the box in the center of bodies referred to the pulley fixed connection from Rafah Cable, the cable separation from the position described in the pulley boxout the other end of the pulley location box. The present invention is the dominant effect: simple, compact, small size, cheap, easy to operate soft clutch, the driver brought to the driving comfort.

The invention relates to a power matching method of a hydraulic excavator, which comprises the following steps: setting a plurality of rotating speeds and outputting different powers according to the known rotating speed of an engine-power characteristic data so as to meet the requirement of different work conditions; the power matching method is characterized in that when the hydraulic excavatorworks, the method causes that the power of a hydraulic pump and the output power of the engine are matched; when the external load is suddenly added in the working process of the hydraulic excavator,the electric current I of a proportional valve of the hydraulic pump are amplified step by step so that the delivery volume V of the hydraulic pump is amplified step by step and finally the output power of the hydraulic pump is steadily increased; and when the external load is suddenly added in the working process of the hydraulic excavator, the dynamic actual electric current is output by tracking the variation condition of the rotating speed of the engine and the detected real-time pump pressure. The power matching method has the advantages of meeting the operational requirement of the excavator by using the power of the engine, thus achieving the purpose of increasing the operational efficiency and reducing the oil consumption.

The invention discloses a wire harness stripping device. A wire sheath cutting device comprises a front-mounted disc, a wire sheath cutting disc and a rear-mounted disc, wire inlet holes are formed in axle centers of the front-mounted disc, the wire sheath cutting disc and the rear-mounted disc, a plurality of blades are arranged on the inner circumferential surface of the wire sheath cutting disc, a tooth space is arranged on the outer circumferential surface of the wire sheath cutting disc, convex ring grooves are formed in the inner side walls of the front-mounted disc and the rear-mounted disc, and four convex sliding blocks are uniformly arranged on two side walls of the wire sheath cutting disc; a wire sheath stripping device comprises a hollow stripping mounting base, two vertical partition plates are arranged in the hollow stripping mounting base, rectangular sliding chutes are formed in the vertical partition plates, two hydraulic cylinders are arranged at the rear end of the hollow stripping mounting base, a mounting block is fixedly arranged at the front end of a telescopic rod, the mounting block penetrates through the rectangular sliding chutes, a wire suction plate is fixedly arranged at the front end of the mounting block, the wire suction plate is provided with a suction hole and a centrifugal fan, and the suction hole traverses the wire suction plate to be communicated with the centrifugal fan. The wire harness stripping device disclosed by the invention is simple in structure, ensures that wire sheaths are stripped through negative pressure suction, saves more time and labor, and can achieve automatic production.

The present invention provides a low-cost ballast circuit for fluorescent lamps. A resonant circuit has a transformer to operate the fluorescent lamp. The fluorescent lamp is connected in series with a first winding of the transformer. A first transistor and a second transistor are coupled to switch the resonant circuit. A second winding and a third winding of the transformer are used for generating control signals in response to a switching current of the resonant circuit. Furthermore, the present invention achieves soft operation for the first transistor and the second transistor.

The invention provides an excavator and a priority control loop of the excavator. The priority control loop of the excavator comprises a main pump, a swing arm lifting oil way and a swing action oil way, wherein the swing arm lifting oil way and the swing action oil way are connected in parallel. The swing arm lifting oil way comprises a swing arm reversing valve and a swing arm drive oil cylinder, wherein the swing arm reversing valve and the swing arm drive oil cylinder are connected with the main pump in series. The swing action oil way comprises a prior valve, a swing reversing valve and a swing motor, wherein the prior valve, the swing reversing valve and the swing motor are connected with the main pump in series. The swing action oil way further comprises a buffering valve and a manual pilot valve. A working oil port of the manual pilot valve is simultaneously communicated with an oil inlet of the buffering valve and a control end of the swing arm reversing valve. An oil outlet of the buffering valve is communicated with a control end of the prior valve. The prior valve is in a circulating state when the control end of the prior valve is under no pressure, and is in a throttling state when the control end of the prior valve is under pressure. Due to the facts that the manual pilot valve is used in the priority control loop of the excavator for outputting voltage so as to control the prior valve, and a proportional valve or a controller does not need to be added, cost is effectively reduced, stability is high, operation is gentle, and the problem of abrupt acceleration caused by an abrupt change of flow is solved.

The present invention relates to an electronic shift lever device capable of controlling the transmission stage of a vehicle, using an electrical signal. Particularly, the purpose of the present invention is to provide an electronic shift lever device for simplifying a lever operation means and a sensing means, allowing the operation and the sensing to become smoother, and enabling dual use of AT and MT and compatibility of a main body according to the shape of a gate (61). The electronic shift lever device suggested in the present invention is characterized in that the lower part of a lever (2) is ball-combined to a main body (1); a magnet (4) is mounted on the lower end of the lever (2); a substrate (5) in which a hole sensor (51) is arranged on the lower part of the magnet (4) is horizontally mounted; and a gate cover (6) and the substrate (5) are combined so as to be replaced from the main body (1) by opening the internal upper and lower ends of the main body (1).