摘要:
The output shaft of a nut runner for tightening a fastener such as a bolt is first rotated with a first torque at a first speed. When the tightening torque of the output shaft reaches a preset switching torque, the first torque first speed rotation of the output shaft is interrupted, and thereafter the output shaft is rotated with a second torque at a second speed. When the tightening torque then reaches a preset snug torque, the second torque second speed rotation of the output shaft is interrupted, and thereafter the output shaft is rotated with a third torque at a third speed. When the tightening torque reaches a preset final torque, the third torque third speed rotation of the output shaft is stopped, thus completing the tightening of the fastener.
摘要:
A protrusion is formed downstream of the throat of an insulating nozzle of a gas-insulated circuit breaker of puffer type. Quenching gas, after collision with the protrusion, is blown against an arc generated between a fixed arcing contact and a moving arcing contact in the opening process of the gas-insulated circuit breaker. As a result, a pressure drop at or near the forward end (Q) of the fixed arcing contact can be prevented thereby to improve the insulation strength in the opening process.
摘要:
A gas extracting device for extracting gas suspended in a liquid from the liquid including a vessel for separating gas suspended in the liquid from the liquid, a mechanism for storing the gas, a mechanism for drawing in the gas from the vessel and for exhausting the gas to the gas storing mechanism, a mechanism for actuating the mechanism for drawing in and exhausting the gas, a vacuum pump connected to the vessel, the gas storing mechanism and the mechanism for drawing in and exhausting the gas and an assembly for selectively intercommunicating the vessel, the mechanism for drawing in and exhausting the gas, the gas storing mechanism and the vacuum pump.
摘要:
A constant-velocity joint includes an outer ring formed with a bore defined by six flat surfaces parallel to its axis, and a trunnion member received in the bore of the outer ring. The trunnion member has an outer periphery formed with three first spherical surfaces circumferentially spaced apart from each other and three second spherical surfaces circumferentially spaced apart from each other and each disposed between adjacent first spherical surfaces. Each first spherical surface is in contact with one of the flat surfaces at a point offset from the circumferential center of the flat surface in one circumferential direction. Each second spherical surface is in contact with another flat surface at a point offset from the circumferential center of the flat surface in the other circumferential direction. At least one of the outer ring and the trunnion member is made of a synthetic resin.
摘要:
A lens barrel includes a communicating passage that communicates between a space inside the lens barrel and outside of the lens barrel. The communicating passage includes a through hole, a circumferential groove, and a vertical groove. Light from outside the lens barrel is prevented from entering an effective optical range of a lens through the communicating passage. A partition is arranged between the effective optical range and a non-light-transmitting range. A surface of a portion outside the effective optical range is formed of a light-absorbing material, so that light is prevented from directly entering the lens through the communicating passage.
摘要:
A lens block according to the present invention includes a lens cylinder; and at least one lens accommodated in the lens cylinder and dividing a space in the lens cylinder into a first space and a second space, wherein the lens cylinder includes at least one hole into which a tool for removing the at least one lens from the lens cylinder is inserted, wherein the at least one lens is pressed into the lens cylinder from either one of the first space and the second space, and the at least one hole is formed on the other of the first space and the second space, and wherein the at least one hole is provided in a position that enables the inserted tool to contact the at least one lens through the at least one hole.
摘要:
Disclosed is a member mounting structure and a member mounting apparatus for mounting a member such as a solid state image input unit in which mounting of the solid state image input unit can be achieved with high accuracy after positioning adjustment along five axes, yield of production can be increased, and at the same time, decrease of fixing force of the solid state image input unit after production (after adhesive material has been hardened) does not occur by means that positioning adjustment of the solid state image input unit along five axes is easily performed before adhering and fixing of the solid state image input unit. An intermediate holding member is disposed between a frame and the solid state image input unit so that a first adhered surface between the frame and the intermediate holding member, and a second adhered surface between the solid state image input unit and intermediate holding member are arranged parallely with pixel lines and at the same time, the first adhered surface and second adhered surface are arranged to make a right angle.