314results about How to "Accurate pressing" patented technology

A shock absorber interposed in parallel with a suspension spring between a vehicle wheel and a vehicle body of a vehicle comprises a main piston (2) partitioning a cylinder (1) into a first operating chamber (R1) and a second operating chamber (R2), and connected to a piston rod (8). The first operating chamber (R1) and the second operating chamber (R2) are connected by a laminated leaf valve (V1, V2) under a first flow resistance. A passage (4a) connects one of the pressure chambers (R3A, R3B) partitioned by a free piston (5) and the first operating chamber (R1) under a second flow resistance. A passage (4b) connects the other of the pressure chambers (R3A, R3B) and the second operating chamber (R2) under a third flow resistance. The shock absorber displays stable damping force characteristics as a result of a spring (S) supporting the free piston (5) in a predetermined neutral position.

The keyboard includes a rubber sheet fixed on key tops of a set of key-switch devices. The rubber sheet elastically urges the key tops upward so that they are borne away from the base of the key-switch devices. The rubber sheet is arranged so as to cover the key-switch devices from outside. According to the invention, the cost of a keyboard covered with a dustproof and watertight rubber sheet can be reduced.

A substrate or sheet surface cleaning apparatus is provided with at least one tacky rubber roller and at least one adhesive tape roll which is brought into close contact with the tacky rubber roller. The roller and roll are rotatably supported at opposite ends of their shafts by bearings which are slidable in a vertical direction. Pressed rods are arranged integrally on the slidable bearings for the roll. By urging the pressed rods with pressing rods driven by d.c. motors via gear trains while controlling the d.c. motors by a position sensor, the pressure between the roll and the roller and the pressure between the roller and the substrate or sheet are optimized so that dirt or particles can be efficiently removed from an opposing surface of the substrate or sheet. Another substrate or sheet surface cleaning apparatus is provided two tacky rubber rollers arranged in an up-and-down parallel relationship and two adhesive tape rolls arranged above the upper roller and below the lower roller, respectively. Position adjusters with one or more springs disposed therein are arranged between slidable bearings supporting the upper roller and fixed bearings supporting the lower roller to correct tilting, if any, of the upper roller.

Characteristics of an implementation of my full-duplex speakerphone system, comprising transmit and receive suppress units, and acoustic and line echo cancellers, are determined once during manufacturing. The determined characteristics include a "total suppression" the combination of which the suppress units and echo cancellers must continuously provide to maintain stability and a midpoint value relative to total suppression. During operation, the system compares near-end and far-end speech power to midpoint to determine which side is speaking. During far-end speech, the system dynamically determines if the acoustic echo canceller has diverged in performance and if so, resets the echo canceller. The system then determines acoustic echo canceller performance and adjusts the system accordingly, varying the receive suppress unit to apply no suppression on the receive path and varying the transmit suppress unit to apply some suppression value less than "total suppression" on the transmit path. The opposite occurs when the system determines the near-end is speaking.

Valve collet component assembly equipment comprises a protection component, an operation box component, a pressing power component, a pressing limiting mechanism, an air inlet and outlet pressing switching servo mechanism, a pressing chuck, an air inlet and outlet overturning mechanism, a material feeding and conveying mechanism and a pressing supporting mechanism. The pressing chuck comprises a collet pressing cylinder and a collet pressing sleeve. When a valve collet is pressed, the collet pressing cylinder acts on the collet pressing sleeve, so that the collet pressing sleeve is used for pressing two collets which move upwards and are going to be completely disengaged from a spring seat due to the action of a valve ejector rod, meanwhile, the collet pressing cylinder enables a cylinder rod to make up-down reciprocating movement, the collet pressing sleeve is made to pat the collets, it is guaranteed that the collets can completely enter the inside of the spring seat, and the accuracy of valve collet pressing is guaranteed.

A basic-additional-yaw-moment setting section sets a basic additional yaw moment and determines the polarity of the basic additional yaw moment on the basis of a steering-wheel angle, a yaw rate, and a vehicle speed. A left-right driving-force distribution controller sets the driving-force distribution with respect to left and right driving wheels on the basis of the basic additional yaw moment and the polarity of the basic additional yaw moment, and adjusts the driving-force distribution when a vehicle drive control operation signal is output from a vehicle drive control unit. Specifically, the left-right driving-force distribution control section adjusts the driving-force distribution such that the polarity of the basic additional yaw moment is in the same direction as that of a yaw moment applied by the vehicle drive control unit.

A fixing means for a heat dissipater is provided to position the heat dissipater and a heat-generating element, which includes a heat-dissipating base and a positioning frame. The surface of the heat-dissipating base is provided with a plurality of heat-dissipating pieces. The center of the plurality of heat-dissipating pieces is provided with a sliding groove. Further, the positioning frame is formed into a T-lettered shape and constituted of a transverse rod and a pressing end. The pressing end is accommodated in the sliding groove of the base to abut against the surface of the base. Both side faces of the transverse rod are provided with a screw hole, respectively, for receiving a locking element. With the downward force generated by the connection of the locking element, the pressing end of the positioning frame can be caused to abut against the surface of the base, thereby to efficiently press the gravity center of the base and fix the position of the heat dissipater with respect to the heat-generating element.

A rotating electrical machine control device that applies a high frequency current to a rotating electrical machine including a rotor having saliency, estimates a magnetic pole direction of the rotor on the basis of a high frequency component contained in a voltage command as a response component to the high frequency current, and controls the rotating electrical machine. A high frequency superimposing section sets an estimated d-q axis rotating coordinate system, and a magnetic pole direction adjusting section sets a high frequency coordinate system having a phase difference of the high frequency current command with respect to the estimated d-q axis rotating coordinate system. A steady estimation error correcting section calculates a magnetic flux interference estimation error as an error of the estimated value of the magnetic pole direction which is caused by the d-q axis magnetic flux interference.

The keyboard includes a rubber sheet fixed on key tops of a set of key-switch devices. The rubber sheet elastically urges the key tops upward so that they are borne away from the base of the key-switch devices. The rubber sheet is arranged so as to cover the key-switch devices from outside. According to the invention, the cost of a keyboard covered with a dustproof and watertight rubber sheet can be reduced.

The invention relates to a press fitting device for the guide pipe and the seat retainer of an engine cylinder head. The press fitting device is based on control of a main control unit, and comprises a conveying and clamping mechanism and a press fitting mechanism, wherein the conveying and clamping mechanism is used for conveying the engine cylinder head to a press fitting station and clamping the engine cylinder head; the press fitting mechanism is used for press-fitting the seat retainer and the guide pipe of the engine cylinder head; a clamping device of the conveying and clamping mechanism is arranged between a seat retainer press fitting station and a guide pipe press fitting station during press fitting; and the press fitting mechanism is mounted on a fixed supporting mechanism used for supporting the press fitting device in a sliding manner. The embodiment of the invention is simple in structure, can finish the press fitting operation of the guide pipe and the seat retainer of the engine cylinder head automatically, and does not need working personnel to conduct press fitting, thereby improving the production efficiency greatly, and meeting the batched production.

In a clutch unit, an engagement of a dog clutch can be restricted until a revolution of an input shaft and the revolution of an output shaft correspond to each other so as to be suitable for the engagement. The engagement can be effected when the revolution of the input shaft and the revolution of the output shaft have corresponded so as to be suitable for the engagement. Accordingly, the revolution of the input shaft and the revolution of the output shaft are speedily synchronized, and engagement shocks of the dog clutch can be accurately suppressed. Hence, it is possible to reliably transmit the torque to be transmitted from the driving source to the wheel side through the reduction mechanism.

A folding knife assembly includes a knife handle, a knife body, and a brake portion, wherein the knife body can be turned into or out of the knife handle, and the brake portion is movably coupled to a pivotal position of the knife handle and the knife body. If the knife body is folded completely into the knife handle, an end of a resilient element will press precisely on the periphery of the brake portion, such that the resilient element produces a torque to turn the brake portion into the knife handle. If the knife body is turned gradually out from the knife handle, the resilient element will produce a torque to turn the knife body out from the knife handle, and the knife body will be popped out automatically from the knife handle, so as to effectively prevent the knife body from being popped out accidentally by vibrations.

The invention discloses an assembly machine for water seal static ring components, which mainly comprises a bottom plate (13), a worktable (12), a lead rail (32), an indenter device I, a pressure plate device, a slide carriage device and mechanical grippers matched with the pressure plate device and the slide carriage device; the worktable (12) is arranged above the bottom plate (13); the indenter device I is arranged at one end of the bottom plate (13); the pressure plate device is arranged below the indenter device I and is also arranged on the bottom plate (13); the axis of a through hole (17) of the pressure plate device and the axis of an indenter I (15) of the indenter device I are in the same line; the minimum diameter of the through hole (17) is larger than the external diameter of the indenter I (15); the slide carriage device is matched with the lead rails (32) arranged on the bottom plate (13) in a sliding way. The assembly machine for water seal static ring components is high in assembly precision and efficiency, simple and convenient in operation.

The invention relates to the field of machining, in particular to a gear press-mounting fixture having a tooth space central position requirement. The gear press-mounting fixture solves the problem that assembly type gears are complex in press-mounting. The gear press-mounting fixture comprises a base, the base is fixed on a machine tool, a first elastic stretchy positioning rod which is symmetrical with the axis of the base is arranged on the lower portion of the outer circumferential face of the base, a second elastic stretchy positioning rod which is symmetrical with the axis of the base is arranged on the upper portion of the outer circumferential face of the base, a guide mandrel is arranged on the axis of the base, a pressure head which is located above the base is sleeved on the guide mandrel, the front end of the first elastic stretchy positioning rod is a tapered round head, and the front end of the second elastic stretchy positioning rod is a duckbilled structure. The gear press-mounting fixture is reasonable and reliable in structure and design, gears can be mounted in a pressing mode accurately, requirements for angles of tooth spaces are guaranteed, machining difficulty is lowered, input cost is low, and good economical benefits are obtained. Further, the gear press-mounting fixture has the advantages of being simple in structure, good in manufacturability, reliable, stable, and convenient and fast in operation.

A vehicle integrated control apparatus includes: an electronic control type right / left wheel differential limiting mechanism; a restraining torque proportional controlling unit calculating a first steering assisting force being proportional to a control amount of a restraining torque of the right and left front wheels and being in a direction according to a rotational speed difference between right and left front wheels; a steering reaction force feedback controlling unit calculating a second steering assisting force corresponding to a steering system reaction force and being in a direction along which the steering system reaction force is canceled; and a switching unit changing a ratio of the first and second steering assisting forces in a steering assisting force to be generated, in accordance with the rotational speed difference.

This disclosure provides a method of setting a threshold according to a level of an echo signal containing an unused component. The echo signal is generated by transmitting and receiving a radio wave with an antenna while the antenna revolves. The method includes acquiring levels of the echo signals at every predetermined distance interval and updating a threshold set for an observing position based on the level of the echo signal at the observing position, the threshold set for the observing position, and a threshold set for a position closer to the antenna than the observing position by the predetermined distance on the same sweep.

A waveguide structure is provided. The waveguide structure includes: a slot channel waveguide including first and second patterns, which are spaced apart from each other to define a slot; a first upper layer covering at least a portion of the slot channel waveguide; and a second upper layer covering the remaining portion of the slot channel waveguide. A thermo-optic coefficient (TOC) of the channel waveguide times a TOC of the second upper layer is a negative number.

The invention discloses a flywheel clutch positioning pin pressing tool. Four stand columns are fixedly arranged on the top face of a base, and a horizontal movable plate is connected among the four stand columns in a sliding mode. An upper connecting disc of the upper plate face of the horizontal movable plate is fixed to the lower end of a piston rod of a cylinder. The cylinder is installed on a top plate. The bottom face of the top face is fixed to the top ends of the four stand columns. A vertical shaft is fixedly arranged on the lower disc face of a lower connecting disc of the lower plate face of the horizontal movable plate. The small-diameter section of the vertical shaft is sleeved with a pressing disc and a double nut. Positioning pin connecting rods are circumferentially distributed on the pressing disc. The lower ends of the large-diameter sections of the positioning pin connecting rods are provided with positioning pin installation blind holes. A base plate is placed on the base and provided with a central positioning column and a positioning cushion block. Circumferential positioning blocks are arranged around the central positioning column. Clutch positioning pins can be accurately and rapidly pressed in pin holes in a flywheel, the flywheel clutch positioning pin pressing tool is high in automation degree and high in reliability, the clutch positioning pins at different circumferential positions can be pressed by rotating the pressing disc, and therefore the application range of the flywheel clutch positioning pin pressing tool is enlarged.

A friction stir welding device (1) includes a workpiece disposition unit (2) at which workpieces (W) is disposed, a main body section (3) disposed at a surface (W4) of the workpieces (W) disposed at the workpiece disposition unit (2), a tool holding unit (4) formed in the main body section (3) to enable advance and retreat in a direction facing the workpieces (Z), which is a direction approaching and separating from the workpieces (W) disposed at the workpiece disposition unit (2), and configured to hold a tool (100), and a support medium (5) formed to satisfy a predetermined relative positional relationship in the direction facing the workpieces (Z) with respect to a first shoulder surface of the tool (100) attached to the tool holding unit (4) and configured to support the tool holding unit (4) on the surface (W4) of the workpieces (W) disposed at the workpieces disposition unit (2).

A golf ball having a predetermined radius, and a spherical outer surface with a multiplicity of dimples formed therein. A protrusion is formed in each of the dimples which are located in hit portions having a diameter of 5–15 mm, or alternatively, is formed in each of all the dimples. The protrusion has a distal end whose radial distance from the center of the golf ball is equal to the predetermined radius of the golf ball. The protrusion has a partition wall which divides a space in each dimple into a plurality of segmental spaces. The protrusion may have two partition walls which are perpendicular to each other and intersect at right angles for dividing a space in each of the dimples into four segmental spaces.

A blood pressure measuring apparatus includes a plurality of mechanisms compressing a cuff, and the mechanisms are separately controlled. Therefore, a stable measurement attitude is maintained irrespective of a circumference or a shape of an upper arm. Compression degrees are separately controlled, whereby a pressure can evenly be applied to the cuff to improve a compression force acting on an artery.

The invention relates to the field of masks, in particular to a mask production process which comprises the following steps: step 1, inputting and compounding more than two layers of filter materials;step 2, forming a pleating part in the middle of the continuous mask raw material; step 3, inputting, cutting off and compounding a nose clamping strip on the mask raw material; step 4, forming a mask body area with an upper fixing edge strip, a lower fixing edge strip, a left fixing edge strip and a right fixing edge strip on the mask raw material; step 5, continuously unwinding, inputting and cutting the lug sheet material to form a continuous lug sheet; step 6, compounding the ear pieces with the mask raw material; step 7, performing thermocompression bonding, and fixing the ear pieces andthe mask raw material; step 8, performing slitting, and forming an independent mask; step 9, outputting the product. The technical problems that ear hanging parts of an existing mask are poor in connection firmness, the production is inconvenient, and the production efficiency is low are solved. Meanwhile, the invention further provides a device for implementing the mask production process.

A shock absorber interposed in parallel with a suspension spring between a vehicle wheel and a vehicle body of a vehicle comprises a main piston (2) partitioning a cylinder (1) into a first operating chamber (R1) and a second operating chamber (R2), and connected to a piston rod (8). The first operating chamber (R1) and the second operating chamber (R2) are connected by a laminated leaf valve (V1, V2) under a first flow resistance. A passage (4a) connects one of the pressure chambers (R3A, R3B) partitioned by a free piston (5) and the first operating chamber (R1) under a second flow resistance. A passage (4b) connects the other of the pressure chambers (R3A, R3B) and the second operating chamber (R2) under a third flow resistance. The shock absorber displays stable damping force characteristics as a result of a spring (S) supporting the free piston (5) in a predetermined neutral position.

An air bag system includes an air bag which can cover a front surface side of a front pillar of a vehicle. The air bag includes an inflatable main body portion and a supporting inflatable portion. The inflatable main body portion covers a front surface of the front pillar when the air bag is inflated completely. The supporting inflatable portion stretches continuously from the inflation main body portion so as to extend towards an outside of the vehicle from the inflation main body portion and is disposed to be brought into abutment with an upper surface of a mirror main body of a door mirror which is in a usable position on a lower surface side so as to be supported thereon to thereby support the inflatable main body portion, when the air bag is inflated completely.

The present invention is a single-phase voltage source AC-DC power converter and a three-phase voltage source AC-DC power converter. Each of the single-phase voltage source AC-DC power converter and the three-phase voltage source AC-DC power converter includes a voltage source AC-DC power converting circuit that converts power from a DC voltage source into AC power to output the AC power from an AC terminal; and target current producing means that includes a filter voltage command device and a voltage controller, the filter voltage command device generating a filter voltage command value that becomes a reference of the AC power output from the AC terminal, the AC output voltage at the AC terminal being input as an input signal to the voltage controller, the voltage controller integrating a difference between the filter voltage command value from the filter voltage command device and the AC output voltage at the AC terminal, the target current producing means outputting a PWM command such that the integration value of the difference between the filter voltage command value from the filter voltage command device and the AC output voltage at the AC terminal becomes zero.