115results about How to "Realization of small size and light weight" patented technology

To provide an electric power steering apparatus in which it is possible to minimize a connection distance between a control unit and an electric motor and surely prevent electric noise from mixing between the control unit and the electric motor as well as to minimize electric resistance and minimize an electric loss by directly connecting the control unit and connection terminals of the electric motor and a torque sensor. A motor control apparatus includes a steering column 3 having inserted therein a steering shaft 2 to which steering torque is transmitted, a reduction gear box 4 coupled to the steering shaft 2, and an electric motor 5 that transmits a steering assisting force to the steering shaft 2 via a reduction mechanism in the reduction gear box 4. The electric motor 5 and a control unit 19 including a control board mounted with a control circuit that controls to drive the electric motor 5 are provided side by side in the reduction gear box 4 and a connection terminal of the electric motor 5 is electrically connected to the control unit 19 directly.

A canned linear motor armature and a canned linear motor of water cooling type are provided. The insulation reliability of a canned linear motor armature is improved. The temperature rises of both the linear motor surface and the armature winding are reduced. Even if the coolant pressure increases, the can neither breaks nor deforms. The weight of the armature is lightened. The viscosity braking force is reduced. In the canned linear motor armature, the armature winding (104) is surrounded with a picture-frame-shaped case (111), both the openings of the case (111) are closed with flat can (121), and coolant passages (131) are provided inside the can (121) and on the top surface of the coil side of the armature winding (104).

A sugar cane harvester is composed of a main frame assemblage with a rockerarm and a cane tip cutting unit, a harvesting platform assemblage in the front of said main frame assemblage and with two cane-holding units, a comb-shaped can pushing bar between two cane-holding units, a tooth-shaped cutting unit and a guide plate, and a leaf-stripping assemblage with a pair of horizontal delivering roller.

The invention is applicable to the technical field of printed circuit boards and provides a processing method of a printed circuit board and aims at solving a problem, which exists in the prior art, that before lamination, when a blind hole is drilled in a core board, core board fracture or fold is likely to happen. The method includes the following steps: a pre-procedure: laminating an outer-layer substrate, a prepreg and another outer-layer substrate sequentially and carrying out lamination processing so as to form a multi-layer printed circuit board; hole processing: processing a blind hole, which extends from the core board to the prepreg, in the multilayer printed circuit board; copper deposition: carrying out copper deposition processing on the blind-hole printed circuit board so as to form a copper layer; hole filling: using a filler to fill the blind hole fully; and outer-layer processing: manufacturing a line pattern. Through blind-hole processing on the multilayer printed circuit board after the lamination processing and hole filling processing of the blind hole, electrical connection with the inner-layer core board is realized so that a problem that in a process of hole processing in the inner-layer core board, fracture or fold happens is solved so that realization of high-density interconnection of printed circuit boards is facilitated.

The present invention provides a lifting and conveying device, which can improve the versatility of the lifting and conveying device that can be used in the transfer of automobile bodies in automobile assembly lines. The multi-section telescopic pillar body includes a fixed pillar part, at least one middle-section lifting pillar part, and a last-section lifting part. The transfer mechanism is arranged on the last-section lifting part. The inner lifting balance weight acts upward on the weight of the balance weight on the winding transmission part on the middle lifting pillar of the next section, and the lifting and lowering driven by the middle lifting pillar of the next section relative to the fixed pillar. The drive mechanism is composed of winding transmission parts that transform the rising motion of the middle lifting pillar part into the rising movement of the middle lifting pillar part or the last lifting part of the next stage.

The invention provides a three-D shape measurement device. XYZ reference mirrors (2, 3, 4) of XYZ coordinates and a Z pneumatic sliding rail part (11) are formed through the sharing on the upper and lower sides, so that the upper and the lower measurement coordinate systems are made completely identical. In addition, a dislocation detecting unit for a contact pin (5) is made thinner by a diffraction grating (8), and the bearing part of a probe is made further thinner through the use of a pulley (18) and a dead load spring (17). Hereby, the structure is made simple, the miniaturization is achieved, and the manufacturing is easy.

The objective is to provide a gas circuit breaker improving an arc distinguishing performance. The gas circuit breaker is provided with: a fixed contactor 1 and a movable contactor 2 contactably and separably arranged in a container filled with an insulating gas; a tubular nozzle 10 installed surrounding the contact-separation parts of the fixed contactor and the movable contactor; and a buffer room 7 to compress the insulating gas and eject it into the nozzle while interlocked with the movable contactor. A nozzle 10 is formed by a composite material composed by adding an inorganic filler to a resin of lower heat resistance than that of a fluororesin, gas pressure inside the nozzle is elevated by an abrasion gas generated from the resin of lower heat resistance than that of the fluororesin by arc energy, and the arc distinguishing performance is improved.

Provided is a rack for firing which holds a plurality of flat board-like setters at multiple levels in the perpendicular direction by means of a setter holding means, and fires electronic ceramic elements at multiple levels. The setter holding means is composed of a material composed of Si-SiC containing 0.01-30 % of Si or recrystallized SiC or Si3N4-SiC, and the setter holding means holds each of the flat board-like setters with 70-100 % of the outer circumferential side surface thereof exposed. Consequently, the rack has excellent energy efficiency, mass-production efficiency, and uniform heating characteristics at each of the multiple levels in the multiple-level firing.

The invention provides a buffer device and a folding table.The buffer device is simple in structure, wherein the manufacture is easy and inexpensive, and the small-sized lightweight is realized. Meanwhile, the waste treatment is performed.The folding and unfolding operation of the folding table is performed by the buffer device.The folding table is easy in structure, wherein the manufacture is easy and inexpensive, the small-sized lightweight is realized and the design is improved while ensuring the operation to be smooth and safe.A telescopic action member can be movably accommodated in the main body of the buffer device. One end of the action member is connected to a load part.The load part can be displaced.when the load part is displaced, the movement of the action member can be braked or buffered.A movable body accommodated inside the main body can move along the axial direction thereof and the action member is movably accommodated inside the movable body.A retainer of a tapered portion is arranged at the circumferential surface of the movable body.When the action member is moved, the tapered portion is detachably inserted between a clamp part arranged inside the main body and the circumferential surface of the action member.

There are provided a first switch element (34a) for interrupting the discharging current following in a battery cell (31) and a second switch element (34b) for interrupting the charging current. A positive character thermistor (Rcpb) is inserted between a gate control terminal (Dout,Cout) of a protection control circuit (33) and the gate of at least one of the switch elements (34a,34b), while a resistor (R1b) is connected between the gate and source of that switch element. The positive character thermistor (Rcpb) is thermally coupled to the first and second switch elements (34a,34b) or to the battery cell (31). In this way, an extraordinary excessive heating state of the switch elements (34a,34b) or battery cell (31) causes a rise in the resistance of the positive character thermistor (Rcpb), which then places the switch element (34b) in an interruption state to activate a protection function.

The invention provides an electromagnetic valve for pumping liquid brazing filler metal. The electromagnetic valve is characterized in that the electromagnetic pump is provided with a soldering flux groove for accommodating the liquid brazing filler metal, an iron plate which extends from the upper portion to the bottom of the soldering flux groove is arranged on the soldering flux groove, a gap is reserved between the lower portion of the iron plate and the bottom of the soldering flux groove, the liquid brazing filler metal flows through the gap, and a liquid brazing filler metal flowing channel is formed between the iron plate and the wall of the soldering flux groove, and extends towards to the top of the soldering flux groove to form a liquid brazing filler metal nozzle; and a conveying belt is arranged at a position, which is adjacent to the flowing channel, of the outer portion of the soldering flux groove, a plurality of permanent magnets are placed on the conveying belt at intervals, and the conveying belt is driven by a motor to move upwards, so that an upward moving magnetic field is generated, and upwards thrust is correspondingly generated to push the liquid brazing filler metal to be jetted out from the nozzle. Problems of complexity, large occupied space, high heating and the like caused by an existing three-phase electromagnetic pump are avoided, and the electromagnetic valve is simple, small and light.

The present invention provided a plasma torch which is stable in cutting performance, is long in service lives of an electrode and a plasma nozzle, and can be made small in size and lightening in weight are attained. The plasma torch is equipped with: an electrode provided at the axial part of a torch body, and in which a taper part is formed at the tip; a plasma nozzle fitted to the torch body; cups each surrounding the plasma nozzle and fitted to the torch body; movable rings sliding to the axial direction while the inner circumferential part is electrically contacted with the upper part of the taper part in the electrode, and the outer circumferential part is electrically contacted with the plasma nozzle; and springs each fitted to the inside face of the plasma nozzle and pushing-up the movable ring. Each sealed space is formed by the electrode, the movable ring, the plasma nozzle and the torch body, and at the time of arc starting, when plasma gas is fed to the space, the movable ring is separated from the upper part of the taper part in the electrode and moves to the lower direction, and the inner circumferential face of the movable ring is made non-contact with the taper part in the electrode, thereby generating a pilot arc.

A disc brake, which can reduce the wall thickness of the torque receiving part between the pistons to the greatest extent without sacrificing the length, the disc brake has multiple pairs of pistons (15, 16) on both sides of the disc rotating body, through which each The advancement of the pistons (15, 16) makes many pairs of brake blocks (22, 23) crimped on the disc rotating body (D), and at the same time, the sides of each pair of brake blocks (22, 23) are supported on the support Braking forces are generated on the torque receiving parts (31, 32, 33) of the frame main body (1), and each pair of brake blocks (22, 23) is configured as follows: in the radial direction of the disc rotation body (D), in the opposite direction The rotation center (O) of the disk rotation body (D) and a point (P) in the area on the opposite side of the support frame main body (1), the centerlines of each block intersect, and the torque receiving part (33 in the middle) is reduced as much as possible ) at the front end angle of the triangle to reduce the arrangement spacing of the pistons (15, 16).

The present invention relates to a screw tightening device having a small-sized clutch, reduced in size and weight, and easily operable. A clutch (5) is directly connected to the output side of a DC motor (3), and as a result, the output of the DC motor (3) is less than the output of conventionally used motors. This reduces the size of the DC motor (3) and the clutch (5). Accordingly, the size and weight of a device body (1) are less than those of conventional products.

The problem to be solved in the invention is that, although a direct hot-water supply type is being considered in order to reduce size and weight in a heat pump hot-water supply floor heating device having a floor heating function at the same time, the difference between necessary heating capability in a hot-water supply operation and that in a floor heating operation is large, it can not be handled by conventional control of the number of revolutions of a compressor, and, in particular, separation, loss of synchronism, noise and the like of a compression mechanism part are generated in a low-speed operation in the floor heating operation. This heat pump hot-water supply floor heating device of the invention is solved the conventional problem by executing a heat pump operation in using hot water, by adding a floor heating function to a direct hot-water supply type heat pump water heater for directly supplying heating water to a used terminal, and by skillfully using control of the number of revolutions and capacity control as a control method of a compressor in response to a situation.

The invention relates to a high-precision low-fluctuation permanent magnetic brushless servomotor for a solar tracking system, which comprises a machine shell as well as a stator and a rotor in the machine shell, wherein the stator comprises a stator core fixed on the inner wall of the machine shell and a stator winding; the rotor comprises a main shaft and a rotor core; the outer circumference of the rotor core is sleeved with an annular magnetic pole consisting of radial magnetized magnetic steels which are evenly arranged along the circumferential direction and adjacent oblique angled magnetized magnetic steels; one radial magnetized magnetic steel and two adjacent oblique angled magnetized magnetic steels in the annular magnetic pole form a rotor magnetic pole; the radial magnetized magnetic steels are main magnetic poles; and the two adjacent oblique angled magnetized magnetic steels on both sides are auxiliary magnetic poles. Radial and oblique angled mixed anisotropic magnetized magnetic poles in the annular magnetic pole of the rotor ensure that the motor can also remarkably improve air gap flux density waveform of the motor even if the even air gap is adopted, obtain a sinewave magnetic field, does not reduce power output, can also reduce moment fluctuation, and improve the precision of the solar tracking system. The motor can perform steady operation with high efficiency, low fluctuation, low noise, quick response and high precision.