Mitsubishi Denki Kabushiki Kaisha

Rigaku Corporation

Toyota Jidosha Kabushiki Kaisha

Mitsubishi Denki Kagushisa Kaisha

Mitsubishi Electric Corporation

Masaru Kuribayashi

Yoshihito Asao

Masahiro Nonoguchi

Masashi Kageyama

Tomohiro Chaki

Masahiko Fujita

Naohisa Osaka

Hideki Morikaku

Sadayuki Takahashi

Takeyoshi Taguchi

Masaaki Yamakata

Koichi Kato

Yoji Kobayashi

Katsumi Adachi

Hitoshi Isoda

Shoichiro Nishitani

Kazuhiro Shono

Jimpei Harada

Seiichi Hayashi

Daisuke Imai

Yuzo Miura

Kenichi Okajima

Yuichi Nagamatsu

Yasushi Nakatake

Masaharu Doi

Shinya Kudou

Katsumi Tsukamoto

There is provided a technique for non-destructively and relatively easily acquiring orientation information of an anisotropic material even for a large-sized object. An object is irradiated with X-rays in a tangential direction of a curved anisotropic material from a radiation source of a phase-contrast X-ray optical system. A scattering image is then obtained using a detection signal of X-rays having penetrated through the object. Structure information of the anisotropic material is acquired based on the scattering image.

Structure information acquisition method and structure information acquisition apparatus

An X-ray generator comprising a target for receiving electrons and generating X-rays, a separator for dividing an internal space of the target into a coolant inflow path and a coolant outflow path, a motor for rotating the target, and a coolant inflow path and a coolant outflow path for supplying a coolant to the coolant inflow path and recovering the coolant through the coolant outflow path, wherein the separator rotates in the same rotation direction as the target when the target rotates. In the X-ray generator in which a coolant inflow path and a coolant outflow path are provided by a separator inside a rotating target, reduced torque load and reduced vibration can be realized.

X-ray generator

An electron gun having: a cathode for emitting electrons; a first Wehnelt electrode equipped with a first aperture through which electrons are allowed to pass; and a second Wehnelt electrode that is equipped with a second aperture disposed at a predetermined position with respect to the cathode and the first aperture, and that is furnished at a position closer to the cathode than the first Wehnelt electrode, wherein: the cathode and the second Wehnelt electrode are included within a single assembly constituting a unitary body; and the assembly is detachably attached to the first Wehnelt electrode. Replacement of the cathode can be performed by detaching the cathode unit from the first Wehnelt electrode, and then ejecting the cathode unit out from the Wehnelt cover. The emitter of the cathode can thereby be reliably positioned with respect to the second aperture.

Electron gun, X-ray generator and X-ray measurement apparatus

Provided is an X-ray generator comprising a cathode for generating electrons; a rotating anode having a cylindrical electron impingement surface, an X-ray focal point being formed by a region in which the electrons impinge upon the electron impingement surface; and a Wehnelt electrode for imparting an electric field to the electrons emitted from the cathode. The Wehnelt electrode has a field formation surface for forming the electric field, and an electron passage aperture formed by the field formation surface. The field formation surface of the Wehnelt electrode is inclined with respect to a plane tangent to an outer circumferential surface of the rotating anode at the center of the X-ray focal point. The center of the cathode is in a plane orthogonal to the field formation surface and aligned with the center of the electron passage aperture.

Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a Wehnelt electrode for surrounding the filament, an attachment part formed integrally with the Wehnelt electrode, a pedestal to which the attachment part is attached, and a casing for housing the pedestal and the anticathode. The width of the space in which the anticathode is housed by the casing is less than the width of the space in which the pedestal is housed by the casing. The Wehnelt electrode extends into the space in which the anticathode is housed by the casing, in a state in which the attachment part is attached to the pedestal.

A welding set and a welding method that suppresses the unnecessary magnetization of a permanent magnet member by a welding current when welding one metal member including a permanent magnet member and the other metal member together are obtained. The welding set is provided with a work retaining partthat retains a work; a pressure devicelocated over the work retaining partwith a work-providing space interposed; a first welding electrodemounted on a moving partof the pressure device; a second welding electrode; and a welding transformerthat supplies a welding current to both of the welding electrodes. Both of the welding electrodesare located on one end side of the workwith respect to one metal member and the other metal member respectively, as well as are located so that there is no permanent magnet memberbetween respective abutment terminal of one metal member and the other metal member.

Welding set of metal member including permanent magnet and welding method thereof, as well as electric rotating machine

An X-ray diffraction apparatus allows plural kinds of characteristic X-rays to be incident on a sample at the same time and thus allows X-ray diffraction measurement with the plural kinds of characteristic X-rays to be carried out at the same time. An X-ray tube includes an anode which has the first target region made of Co and the second target region made of Cu. The first and second target regions are sectioned in a direction (Z-direction) perpendicular to an X-ray take-off direction. Incident-side and receiving-side Z-direction-divergence restriction devices restrict the X-ray divergence in the Z-direction. An X-ray detector is position sensitive at least in the Z-direction and can detect separately a diffracted X-ray coming from the first sample region which is irradiated with the Co characteristic X-ray and another diffracted X-ray coming from the second sample region which is irradiated with the Cu characteristic X-ray. The detector may be a two-dimensional CCD sensor capable of executing a TDI operation.

X-ray diffraction apparatus

Stator terminals are fastened between head portions and coupling seats in a state of surface contact by screwing relay members onto external screw thread portions of output terminal bolts. Three-phase wire terminals are fastened in a state of surface contact to end surfaces of the relay members at opposite ends from the coupling seats by screwing nuts onto the external screw thread portions of the output terminal bolts. In addition, insulating tubes are interposed between the relay members and extraction apertures so as to cover outer sides of the relay members.

Automotive dynamoelectric machine

An automotive staffer generator apparatus that is inexpensive and compact, enabling engine starting functions and generating functions to be made compatible by improving maximum torque without having to increase the number of turns in an armature winding. An automotive starter generator machine includes: an armature core onto which an armature winding is wound; and a rotor having: a claw-pole rotor core disposed on an inner peripheral side of the armature core; and a field winding installed on an inner peripheral side of claw-shaped magnetic poles of the claw-pole rotor core, and has a starting function for starting an engine and a generating function. Permanent magnets are disposed between adjacent claw-shaped magnetic poles.

Automotive starter generator apparatus

A coiled filament for an X-ray tube has a varied coil pitch to obtain a good uniformity of the longitudinal temperature distribution. The filament has a central region including plural turns having a same coil pitch, and end regions which include plural turns each of which has a coil pitch smaller than the coil pitch of the central region. The coil pitches of the plural turns of the end regions are reduced one by one by a same variation from a turn close to the central region toward an outermost turn. A value of &#x394;p/p is within a range of 0.015 to 0.1 and k/n is within a range of 0.3 to 0.8, where p is the coil pitch of the central region, &#x394;p is the coil pitch variation of the end regions, n is a total number of turns of the filament, and k is a sum of numbers of turns of the end regions. The k/n preferably satisfies the following equation:=0.72&#x2212;4.66(&#x394;)&#xb1;0.12.

Filament for X-ray tube and X-ray tube having the same

[Problem] In a conventional rotating electrical machine to perform starting and power generation, an inverter and a rotating electrical machine body are constructed to be separate bodies, and a three-phase harness is provided between the rotating electrical machine and the inverter, and by a voltage drop or loss in this portion, there have been limitations in the improvement of starting and power generation output, and efficiency at the time of same operating current (determined by thermal limitation of the inverter). [Means for Resolution] Since an inverter unitis integrally attached to a rear bracketand is integrally mounted on the end face of a rotating electrical machinein an axial direction, harnesses to be connected can be made short, and reduction in weight of the harness and improvement in resistance to outer disturbance noise can be realized. Besides, as a rotor, since a claw-pole type rotor is constructed in which permanent magnetsandare added, inverter base current is reduced, so that the size of the inverter unitcan be miniaturized, and it can be integrally mounted to the starting and power generation electrical machine.

Rotary electric machine for vehicle

An X-ray tube includes an electron gun in which a Wehnelt electrode is formed with an opening asymmetric about an electron emitter. The electron emitter is an elongate coil filament which is disposed inside the elongate opening of the Wehnelt electrode. The opening has two longer sides positioned asymmetrically about a center-of-width line of the filament. Each of the two longer sides is curved in the same direction as viewed in a direction normal to the front face of the Wehnelt electrode. The two longer sides have curvature radii Rand Rdifferent from each other, so that an electron-beam-irradiation region on a target is not curved but becomes almost straight.

X-ray tube

An output terminal mount includes a molded resin body in which a harness connecting portion and a mounting portion are formed integrally; internal terminals insert molded into the molded resin body such that connecting terminals at a first end are exposed inside harness slots and three-phase output wires are each connected at a second end; and three-phase output bolts insert molded into the molded resin body so as to project into each of the harness slots, nuts being fastened to the projecting portions such that the connecting terminals and terminals of a three-phase output wiring harness are placed in pressure contact with each other. The output terminal mount is mounted by fixing the mount portion to an end surface of a rear bracket at a position between an outer periphery of a crown portion and a radially outer peripheral surface of the rear bracket.

Rotary electric machine

A filament for an X-ray tube has a varied wire diameter but has a constant coil outside diameter to obtain a good uniformity of the longitudinal temperature distribution of the filament. The filament has a wire diameter d which is gradually reduced from the longitudinal central region to the longitudinal ends while the coil outside diameter D is fixed along the longitudinal direction. The wire is polished at only the inside of the coil to reduce the wire diameter. In order to make the longitudinal temperature distribution uniform as far as possible, the difference &#x394;d between the wire diameter dat the longitudinal central region and the wire diameter dat the longitudinal ends should satisfy the following limitation:&#x394;=0.041 to 0.145.

A vehicular generator-motoris composed of a rotor, a stator having three phase armature winding, and a converter. The rotor is provided with a field windingfor magnetizing a plurality of magnetic pole pieces, and permanent magnetsfor magnetizing the magnetic pole piecestogether with the field winding. When the generator-motoris operated as a motor, the converteris operated as an inverter to restrain the armature current at the time of low speed rotation to the extent of the additional magnetic flux from the permanent magnets.

Growing community of inventors

Tokyo, Japan

Masaru Kuribayashi