Abstract: Provided is a ceramic member in which the difference in thermal expansion coefficient between an insulating ceramic material and an electrically conductive ceramic material is extremely small and therefore any mismatch caused in association with this difference in thermal expansion coefficient does not occur, and which does not undergo any failure such as breakage, cracking, detachment or destruction. The ceramic member (1) includes an electrically conductive ceramic material (2) which contains yttrium oxide as the main component and additionally contains a fibrous electrically conductive substance such as carbon nanotubes in an amount of 0.1 to 3 vol % inclusive and an insulation ceramic material (3) which contains yttrium oxide as the main component, wherein the electrically conductive ceramic material (2) and the insulation ceramic material (3) are adhered to each other in an integrated manner through an adhesive layer (4) which includes an inorganic adhesive material.

Abstract: By the control of a controller, a gas is supplied into a metal pipe material from a gas supply part so as to expand a part of the metal pipe material in sub-cavity parts, and then a driving mechanism is driven such that expanded parts of the metal pipe material are pressed by an upper die and a lower die to form flange parts. In addition, by the control of the controller, a gas is supplied into the metal pipe material after the formation of the flange parts from the gas supply part so as to form a pipe part in a main cavity part. In this manner, the controller controls the gas supply part and the driving mechanism, and thus flange parts and a pipe part having a desired shape can be easily formed.

Abstract: Wheel drive apparatuses are provided on left and right wheels of a forklift and drive the respective wheels. Each of the wheel drive apparatuses includes a brake on the inside of a vehicle body of the forklift. The brake includes a brake shaft, friction plates, and a brake cover. The brake cover is removable from the wheel drive apparatus while the wheel drive apparatuses are mounted on the vehicle body. The friction plates are assembled with the brake shaft so as to be movable in an axial direction, and are removable from the wheel drive apparatus, while the wheel drive apparatuses are mounted on the vehicle body, by sliding along the brake shaft toward the inside of the vehicle body in the axial direction when the brake cover has been removed.

Abstract: A disclosed forming system is a forming system which expands and forms a metal pipe in a die. The forming system includes a preliminary forming apparatus which preliminarily forms a metal pipe material, a forming apparatus which includes a gas supply unit which supplies gas into the preliminary-formed and heated metal pipe material to expand the metal pipe material and a main body portion to which the die is attached, and a cutting device which cuts at least a portion of the formed metal pipe. The gas supply unit is provided so as not to be disposed on a first straight line which connects the preliminary forming apparatus and the main body portion in a plan view and a second straight line which connects the cutting device and the main body portion in a plan view.

Abstract: A forming device includes a gas supply part supplying a gas into a metal pipe material held and heated between a first die and a second die paired with each other. A driving mechanism moves at least one of the first die and the second die in a direction in which the dies are combined together. A first cavity part is formed between the first die and the second die to form the pipe part. A second cavity part communicates with the first cavity part to form the flange part. A flange forming member can be allowed to advance or retreat in the second cavity part, and forms the flange part. A controller controls the gas supply of the gas supply part, the driving of the driving mechanism, and the advance or retreat of the flange forming member.

Abstract: A molding apparatus for molding a metal pipe includes: a gas supply unit which supplies gas into a heated metal pipe material, thereby expanding the metal pipe material; a mold which molds the metal pipe by bringing the expanded metal pipe material into contact therewith; and a drive unit which generates a driving force for moving the mold, in which a replacement unit is replaceably provided with respect to a main body unit having at least the drive unit, and the replacement unit is configured of at least the gas supply unit and the mold.

Abstract: A forming system that forms a metal pipe by expansion in a die includes a heater that heats at least an end part of a metal pipe material, a fluid supply unit that supplies a fluid into the metal pipe material to expand the metal pipe material, and a controller that controls the heater and the fluid supply unit, the fluid supply unit has a nozzle that supplies the fluid from the end part of the metal pipe material into the metal pipe material, and the controller controls the heater so as to heat the end part of the metal pipe material at least before the supply of the fluid by the fluid supply unit, and controls the fluid supply unit so as to expand the end part of the metal pipe material.

Abstract: A forming apparatus that forms a metal pipe includes: a heating unit which heats a metal pipe material; a gas supply unit which supplies gas into a heated metal pipe material, thereby expanding the metal pipe material; a die which forms the metal pipe by bringing the expanded metal pipe material into contact with the die; a cooling unit which cools the metal pipe after the forming by a cooling medium; and a control unit which controls an operation of the die, the gas supply unit, and the cooling unit, wherein the control unit makes cooling of the metal pipe by the cooling medium be performed, by controlling an operation of the die such that the die is opened and controlling the cooling unit such that the cooling unit brings the cooling medium into contact with the metal pipe, subsequently to completion of forming by the die.

Abstract: A dielectric material includes a composite sintered body in which conductive particles are dispersed in an insulating material, in which a dielectric constant at a frequency of 40 Hz is 10 or higher, and a difference between a maximum dielectric loss value and a minimum dielectric loss value at a frequency of 1 MHz in a surface of the composite sintered body is 0.002 or less.

Abstract: A molding apparatus capable of improving the quality of a molded article is provided. A control section controls a blowing mechanism to expand and mold a metal pipe material by supplying gas into the metal pipe material held between an upper mold and a lower mold by a pipe holding mechanism. The control section controls a driving section to mold a flange portion by crushing a second molded portion of the expanded metal pipe material in a sub-cavity portion between the upper mold and the lower mold. In a molding apparatus, the control section changes movement speed of a slide during the molding of the flange portion by controlling a servomotor. Accordingly, it becomes possible to control an operation of pressing at an appropriate movement speed according to the shape or the like of the flange portion. Accordingly, it is possible to improve the quality of a molded article.

Abstract: A molding apparatus that molds a metal pipe with a flange is disclosed. The molding apparatus comprises a first mold and a second mold that are paired with each other, a slide that moves at least one of the first mold and the second mold, a drive unit that generates a driving force for moving the slid, a holding section that holds a metal pipe material between the first mold and the second mold, a gas supply section that supplies gas into the metal pipe material held by the holding section, and a control unit that controls the drive unit, the holding section, and the gas supply section. The first mold and the second mold are provided with a first cavity portion that molds a pipe portion of the metal pipe, and a second cavity portion that molds a flange portion.

Abstract: Provided is a sintered object which has excellent resistance to corrosion by corrosive halogen gases and by the plasmas thereof and has excellent thermal conductivity and excellent electrical conductivity. The sintered object has few limitations on design, is usable in a wide range of applications, and is highly versatile. The sintered object has no frequency dependence when a high-frequency voltage is applied thereto and with which it is possible to actualize the stability of a plasma. Also provided is a method for producing the sintered object. Furthermore provided is a high-frequency transmission material which has direct-current electrical conductivity for reducing fluctuations in plasma potential and has capacitive properties that enable the material to transmit high-frequency power necessary for plasma excitation, and which has no fear of causing contamination of a sample with a metal and has resistance to corrosion by plasmas.

Abstract: A power transmission device includes a motor including a rotor having a first axial side, a second axial side opposite the first axial side, a permanent magnet embedded therein and a stator, and configured to generate a rotational force. A reducer is configured to transmit the rotational force of the motor. A wet brake mechanism is provided on the first axial side of the rotor and is configured to brake the rotation of the motor. Spaces accommodating the motor, the reducer, and the wet brake mechanism communicate with each other so that lubricant oil can flow through the spaces. A leakage magnetic flux at a second axial end face on the second axial side of the rotor is greater than a leakage magnetic flux at a first axial end face on the first axial side of the rotor having the wet brake mechanism.

Abstract: Provided is a wheel driving device which drives a wheel by output rotation of a reduction device disposed on an inside in a radial direction of the wheel. The reduction device includes an output member connected to the wheel, and a pair of bearings supporting the output member. In the pair of bearings, the bearing on a side opposite to a vehicle body has a smaller outer diameter than that of the bearing on a vehicle body side. An injection passage member of a medium injected into the wheel may be disposed on an outside in a diameter direction of the bearing on the side opposite to the vehicle body.

Abstract: There is provided a connection structure between a hollow output shaft of a speed reducer, which is provided with the hollow output shaft including a hollow portion, and a driven shaft of a counterpart machine inserted into the hollow portion of the hollow output shaft. The connection structure includes a communication passage through which the hollow portion of the hollow output shaft communicates with an internal space of the speed reducer. A space, which includes clearance between the hollow output shaft and the driven shaft, is formed as a closed space.

Abstract: A wheel drive unit includes a planetary gear mechanism including a planetary gear and an internally-toothed gear. A casing is integrated with the internally-toothed gear, a wheel is attached to the casing, and the casing transmits rotation of the internally-toothed gear to the wheel. A bearing is fitted to an inner circumferential surface of the casing at a position more toward an interior of a vehicle than the planetary gear and rotatably supports the casing. An inner diameter of an outer race of the bearing is larger than an outer diameter of the planetary gear.

Abstract: Wheel drive apparatuses are provided on left and right wheels of a forklift and drive the respective wheels. Each of the wheel drive apparatuses includes a brake on the inside of a vehicle body of the forklift. The brake includes a brake shaft, friction plates, and a brake cover. The brake cover is removable from the wheel drive apparatus while the wheel drive apparatuses are mounted on the vehicle body. The friction plates are assembled with the brake shaft so as to be movable in an axial direction, and are removable from the wheel drive apparatus, while the wheel drive apparatuses are mounted on the vehicle body, by sliding along the brake shaft toward the inside of the vehicle body in the axial direction when the brake cover has been removed.

Abstract: A wheel drive unit includes: a planetary gear mechanism including a planetary gear and an internally-toothed gear; a casing integrated with the internally-toothed gear, a wheel being attached to the casing, and the casing transmitting rotation of the internally-toothed gear to the wheel; a bearing nut configured to prevent axial movement of the casing; and an oil seal provided more toward an interior of a vehicle than the planetary gear mechanism and axially fixed with respect the casing. An inner diameter of the detachment prevention member is smaller than an outer diameter of the externally-toothed gear.

Abstract: A planetary gear device comprises planetary shafts, a planetary gear supported on the planetary shafts via bearings, and an internally-toothed gear. The planetary shafts are arranged at positions offset from a shaft center of the internally-toothed gear. Orbital motion of the planetary shafts is restricted so as to retrieve rotation output from a casing integrated with the internally-toothed gear. Lubricant in which the bearings around some of the plurality of planetary shafts are immersed is sealed in the casing. The planetary gear device further comprises a retention part for retaining the lubricant on a part integrally rotated with the casing.

Abstract: A wheel driving speed reducer includes a parallel shaft gear mechanism that includes a parallel shaft gear, a planetary gear mechanism that is provided on a rear stage of the parallel shaft gear mechanism and includes planetary gears and an internal gear with which the planetary gears internally mesh, and a casing that accommodates the parallel shaft gear mechanism and the planetary gear mechanism. A tooth portion of the parallel shaft gear protrudes and extends into a gap, which is formed between the casing and the internal gear or a member integrated with the internal gear, in an axial direction. The tooth portion of the parallel shaft gear and the internal gear or the member integrated with the internal gear overlap each other when seen in a radial direction.