摘要:
A circuit breaker includes a main case containing a contactor section, an arc-extinguishing device and an overcurrent tripping device; a middle cover laid on the main case, the middle cover having in a central section thereof a recess partitioned with a bottom wall for containing a switching mechanism and at least one interior attachment; and a top cover covering the top side of the recess in the middle cover. The main case, the middle cover and the top cover are arranged to be dividable from one another. The middle cover has an auxiliary cover, covering the switching mechanism, and the auxiliary cover has the top cover mounted thereon.
摘要:
A circuit breaker includes a main case containing a contactor section, an arc-extinguishing device and an overcurrent tripping device; a middle cover laid on the main case, the middle cover having in a central section thereof a recess partitioned with a bottom wall for containing a switching mechanism and at least one interior attachment; and a top cover covering the top side of the recess in the middle cover. The main case, the middle cover and the top cover are arranged to be dividable from one another. The middle cover has an auxiliary cover, covering the switching mechanism, and the auxiliary cover has the top cover mounted thereon.
摘要:
A circuit breaker includes a movable contact, a fixed contact, a switching device, a switching operation handle, and an over-current tripping device. The switching device has a switching lever connected to the handle, a toggle linkage having an upper link and a lower link for connecting to the movable contact, a tripping mechanism for activating the toggle linkage in response to over-current, and an operation spring tightly stretched between the switching lever and the toggle linkage. A locking member is provided in the switching device for interconnecting the toggle linkage and the switching lever and for restricting a movement range of the switching lever according to an operational position of the toggle linkage. When main-circuit contact points are stuck, the locking member restricts the movement of the switching lever and prevents the handle from moving to the OFF position.
摘要:
A circuit breaker has a main housing, and a pocket-shaped auxiliary equipment storage section is formed in the housing. A cassette type auxiliary switch is inserted into and attached to the auxiliary equipment storage section. The auxiliary switch is connected to a switching mechanism in the main housing of the circuit breaker so that the circuit breaker performs switching operations. The circuit breaker includes a locking device for positioning the auxiliary switch inserted into the auxiliary equipment storage section at a predetermined position. Further, an engagement-type stopper is provided for fixing the auxiliary switch at the position where the auxiliary switch is inserted into the auxiliary device storage section.
摘要:
In a resistive-film type touch panel having two resistive-film sheet, a first resistive-film sheet has a power supply means connected to it which generates in it a voltage gradient and the second resistive-film sheet detects a voltage which corresponds to a pressed position on the touch panel. Voltage information corresponding to pressed position coordinate values detected from the two resistive-film sheet is transferred to an A-D conversion means via a switching means for determination of the pressed position on the panel. A non-display region of the panel is provided with function keys, and the panel is additionally provided with a notification means and a non-display region pressing detection means, the notification means making notification of the output from the non-display region pressing detection means, which indicates that the non-display region has been pressed, without intervention of the analog-digital conversion means, directly to a processing/control circuit.
摘要:
A circuit breaker includes an elongated movable contact having a contact at one end thereof for flowing a current therethrough and the other end rotatably supported with a holder, and a protection cover made of an insulating material for covering and protecting a movable contact from short circuit and discharge. The protection cover is made of only the insulating material, covers the movable contact, and has elasticity to tightly hold the movable contact.
摘要:
A contactor device of a repulsion-type circuit breaker includes a first movable contactor with a first movable contact to be driven by an open-close mechanism; a fixed contactor; a second movable contactor having second and third movable contacts; a first contact spring for urging the first movable contactor toward the second movable contactor; and a second contact spring for urging the second movable contactor toward the first movable contactor and the fixed contactor. The first movable contactor, fixed contactor, and second movable contactor are arranged such that when an over-current flows, an electromagnetic repulsive force is generated so that the first and second movable contactors are rotated against the first and second contact springs to open between the first movable contact and the second movable contact and between the fixed contact and the third movable contact before the open-close mechanism opens the first movable contact.
摘要:
A circuit breaker includes a fixed contact; a movable contact disposed in a rotary-type contact holder; a switching device; an operation handle; and an over-current tripping device. The operation handle is operated to open and close main-circuit contact points through the switching device. The switching device includes a handle lever connected to the operation handle; a toggle linkage having an upper toggle link and a lower toggle link; a switching spring placed between the handle lever and an arm connecting point of the toggle linkage; and a side plate for holding the components. The circuit breaker further includes a device for preventing the operation handle from moving to an off position when the contact points are stuck together. The device includes first stoppers formed on a cross bar of the contact holder and the handle lever facing the cross bar, and a second stopper formed on the side plate.
摘要:
A driver stores an electricity consumption value of corresponding input/output hardware. The stored electricity consumption value is registered in an electricity consumption value table in accordance with a setting of the driver when an operating system carries out input/output function. When an application program requires to use the input/output function, the operating system judges whether or not the required input/output of data can be stably carried out with the remaining quantity of the battery measured by a battery remaining quantity measuring instrument, and it is judged that the input/output can be carried out stable, the operating system allows a corresponding driver to drive the input/output hardware. With this feature, the operation of an input/output device is prevented from being unstabilized due to shortage of battery volume without changing an operating system even when electricity consumption of the input/output device is varied due to a setting or the input/output device is exchanged or newly added.
摘要:
In a portable information instrument including a housing having an window, and a display screen accommodated within the housing but exposed in the window to display data processed in the portable information instrument, a cover sheet for protecting the display screen is formed of a soft back sheet and a plurality of rectangular hard pieces fixed on the back sheet. An accommodating mechanism is provided within an inside of the housing, and is spring-biased to retract the cover sheet into the inside of the housing. A stopper mechanism is also provided within the inside of the housing, for inhibiting accommodation of the cover sheet into the inside of the housing by the accommodating mechanism. A sensor is provided within the inside of the housing, for detecting passage of the rectangular hard pieces before the sensor, and an information processor located within the inside of the housing, counts a detection signal generated by the sensor, for activating the stopper mechanism when a count value reaches a predetermined value.