摘要:
This invention relates to a technique for hermetically sealing an artificial leg including a cylinder device. A rod member of the cylinder device extends from the inside to the outside of a shell structure of the cylinder device. The rod member is hermetically sealed at the periphery thereof by a bellows packing member. The bellows packing member comprises an inner bead, an outer bead which concentrically surrounds the outside of the inner bead, and a bellows packing body part which connects the inner and outer beads. The bellows packing body part includes corrugations, and each corrugation is less curved than an imaginary circle which is concentric with the inner bead and the outer bead. Both ends of each of the plurality of corrugations extend to the outer bead or are located at positions closer to the outer bead than the inner bead.
摘要:
This invention relates to a technique for hermetically sealing an artificial leg including a cylinder device. A shell structure surrounds the outside of the cylinder device. The cylinder device is not entirely received within the shell structure, but a rod member extends to the outside of the shell structure from the cylinder body within the shell structure and a part of the rod member is located outside the shell structure. In this invention, the rod member, which extends from the inside to the outside of the shell structure, is hermetically sealed at the periphery thereof by a bellows packing member. The bellows packing member comprises an inner bead, an outer bead which concentrically surrounds the outside of the inner bead, and a bellows packing body part which connects the inner and outer beads. The bellows packing body part includes corrugations, and each corrugation is less curved than an imaginary circle formed between the outer bead and the inner bead and is configured in such a manner that both ends of the corrugation reach the outer bead or are located at positions closer to the outer bead than the inner bead.
摘要:
In an interrupter of a gas circuit breaker that uses springs as a driving source, a contact having a fixed contact and movable contact is opened and closed so as to turn on and off electric power. An operation unit generates driving force for driving the movable contact. A link mechanism interconnects the operation unit and interrupter. The link mechanism has a first lever linked to the operation unit, a second lever linked to the movable contact, and a rotational shaft to which the two levers fit. The operation angle of the first lever with respect to a direction parallel to the motion direction of the movable contact differs depending on whether the contact is open or closed. The gas circuit breaker operates at high speed without the energy of the driving source being increased.
摘要:
A puffer type gas circuit breaker has a piston, which is connected with a center shaft via a link mechanism. At an initial stage of an interruption operation, the link mechanism drives a puffer cylinder and the piston both in an interruption direction while maintaining an almost constant distance therebetween. Even when a pressure rise occurs in a compression chamber by the heat of an arc generated in accordance with opening between a fixed arc contact and a movable arc contact, the pressure rise does not become an operation counterforce to an operator. At a final stage of the interruption operation where the fixed arc contact is removed from a throat of an insulating nozzle, the link mechanism drives the piston in an almost stopped status.
摘要:
A switching device changes over breaking and closing of an electric current by opening/closing a contact portion. An electrically-operated motor generates energy for closing a contact and energy generated by the rotation of the electrically-operated motor is accumulated in a breaking spring. The energy generated by the electrically-operated motor is transmitted to the contact by way of a cam, a breaking spring link, a transfer lever and the like. The breaking spring is arranged in the midst of the converting lever. When the contact is opened, the electrically-operated motor is stopped and the energy accumulated in the breaking spring is released.
摘要:
A chassis frame includes: a pair of suspension frames on a front side and a rear side, which are formed by a metal material; and a center frame formed by a fiber reinforced plastic material, with the suspension frames on the front and on the rear side respectively connected to a front-side and a rear-side end thereof, wherein: the suspension frames include side members extending in a front/rear direction, a cross-member connecting the side members and a suspension mounting portion; the center frame includes side members with a hollow section, and a cross-member connecting the side members; and a front-side and a rear-side end of the side members at the center frame are used as connecting portions where side members of the suspension frames are inserted through the two ends, and the side member of the center frame is fastened to the side members of suspension frames with fastening members.
摘要:
An optical characteristic of an eye is obtained which can not be measured through a uniform adjustment because of a large difference in the distribution of a refractive index, or the like. An arithmetic part first selects an interlock mode, and performs an alignment adjustment. Next, the arithmetic part measures refraction, and interlocks and moves a first illumination optical system and a first light receiving optical system on the basis of the refraction. The arithmetic part obtains a density distribution of point images obtained from a first light receiving part, and judges whether a measurement can be made for each area on the basis of the density. The arithmetic part makes an adjustment so that an unmeasurable area becomes measurable, and creates a composite point image from plural signals obtained in a process of the adjustment. Further, the arithmetic part uses the composite point image to perform a Zernike analysis, obtains the optical characteristic and outputs it on a display part or the like.
摘要:
A semiconductor memory device having a self refresh mode may enter the self refresh mode in response to a self refresh set command and may be released from the self-refresh mode in response to a self refresh release command. The self refresh release command may include a plurality of self refresh release commands sequentially executed while a clock enable signal (CKE) is in a clock enable state. In this way, noise on a clock enable signal may not erroneously release the self refresh mode and the reliability of the self refresh mode may be improved.