摘要:
A motor, a ball screw shaft, etc. are accommodated within a frame that forms an outer frame. Direct-acting guides are provided on both sides of a groove-shaped opening defined in the frame. The ball screw shaft is centrally disposed within the frame. A table slides along the direct-acting guides under the action of rotation of the ball screw shaft. The ball screw shaft has ball-screw splines formed over its entire length and both ends thereof supported by the motor and a bearing. The center of rotation of the ball screw shaft is brought into alignment with the centers of rotation of the motor and the bearing by balls inserted into the ball-screw splines.
摘要:
Disclosed is an actuator having a frame in which a drive source and a slider displaced under the action of the drive source are held, and an actuator arrangement comprising a plurality of actuators connected to each other by connecting devices. A beam member, which constitutes the frame, has a concave portion defined in a side thereof and the drive source is held in the concave portion. A slider base is held in the concave portion and includes the slider displaced along the concave portion. A cover is used to cover the concave portion defined in the beam member. The beam member has grooves defined in respective outer sides thereof, which have substantially T-shaped cross sections and enable other beam members to be mounted to the beam member. The grooves are defined along the longitudinal direction thereof so as to be substantially identical in structure to one another. According to the above construction, either other beam members or the actuators can be connected to one another by means of the grooves so as to assemble a desired actuator arrangement having a desired shape, thereby making it possible to place the actuator arrangement on a production line in a factory.
摘要:
A feed screw mechanism includes a feed screw shaft connected to a drive source and formed with first screw threads on an outer circumferential surface thereof, and a displacement nut, which is screw-engaged with respect to the feed screw shaft through a plurality of balls. The displacement nut is supported with respect to a slider that makes up an electric actuator by a pair of pins. The pins are inserted and fixed in first pin holes formed in the slider, and distal end portions of the pins are inserted respectively into second pin holes formed in the displacement nut.
摘要:
According to one embodiment, a semiconductor device includes a semiconductor layer of a first conductivity type, a first region of a second conductivity type selectively provided in a first major surface of the semiconductor layer, a second region of the second conductivity type selectively provided in the first major surface and connected to the first region, a first electrode provided in contact with the semiconductor layer and the first region, a second electrode provided in contact with the second region, and a third electrode electrically connected to a second major surface of the semiconductor layer opposite to the first major surface.
摘要:
In an electric actuator, a connector is coupled to one end of a screw shaft that makes up a displacement mechanism, the screw shaft being rotatably supported by first and second bearings. Further, on the other end of the screw shaft, a support ring is disposed through a holder, wherein the support ring is slidable along an inner circumferential surface of a piston rod. On the outer circumferential surface of a piston, a rotation-stopping member is provided, which includes projections thereon that project in a radial direction from the outer circumferential surface, the projections being inserted into grooves of said body.
摘要:
According to one embodiment, a semiconductor device includes a semiconductor layer of a first conductivity type, a first region of a second conductivity type selectively provided in a first major surface of the semiconductor layer, a second region of the second conductivity type selectively provided in the first major surface and connected to the first region, a first electrode provided in contact with the semiconductor layer and the first region, a second electrode provided in contact with the second region, and a third electrode electrically connected to a second major surface of the semiconductor layer opposite to the first major surface.
摘要:
Provided is a method of manufacturing a battery having an electrode module including: a positive plate having a cathode collector portion formed by attaching a lead member to a cathode substrate made of a foamed metal plate; and a cathode collector plate welded to the cathode collector portion. The method includes: a pre-welding positive plate forming process of forming a pre-welding positive plate, which is the positive plate before welding, such that the pre-welding positive plate has a projection projecting from a pre-welding cathode collector portion, which is the cathode collector portion before welding; and a welding process of melting a pre-welding cathode collector plate to weld it to the projection. In the pre-welding positive plate forming process, the projection is formed into such a shape that the condition that S≦1.3W is satisfied, where W and S represent the width and the circumferential length of the projection, respectively.
摘要:
A joining method for joining a resin member and a metal member by heating is provided. Joining of the resin member and metal member is performed by heating a joining interface of the resin member and metal member to a temperature in a range of equal to or higher than a decomposition temperature of the resin member and lower than a temperature at which gas bubbles are generated in the resin member and by cooling a surface of the resin member on the opposite side from a joining surface thereof with the metal member to a temperature that is lower than the melting point of the resin member.
摘要:
A vehicle information processing apparatus provided in a vehicle is provided with a TPMS valve that includes an air pressure sensor which obtains a tire air pressure as wheel information and a wheel-side communication device that transmits the wheel information and an ID unique to that wheel-side communication device at regular intervals; an ECU which receives the wheel information from the wheel-side communication device in each TPMS valve via a vehicle body-side communication device and processes that wheel information; and an onboard battery which supplies power to the ECU. Upon receiving a command to shift into a verification mode while power is being supplied from the onboard battery, the ECU performs a predetermined verification based on a signal transmitted at regular intervals from each wheel-side communication device. After receiving the command to shift into the verification mode, the ECU remains in the verification mode until a preset condition is satisfied.