Abstract: A switch device includes an operation unit, a switch unit detachably attached to the operation unit, and an engagement portion provided at the operation unit. The switch unit includes an opening-closing contact mechanism opened in association with an operation of the operation unit, and a drive portion driving the opening-closing contact mechanism to an open condition at a standby position and to a closed condition at a usage position. When the operation unit is attached to the switch unit, the engagement portion engages the drive portion to drive the drive portion from the standby position to the usage position. When the operation unit is inserted to the switch unit, the operation unit and the switch unit are engaged at the usage position.

Abstract: A rotational operation type switch includes a frame; a rotational operation button rotatably supported on the frame for rotational operation; a switching contact mechanism disposed below the operation button to face the operation button; and an operation mechanism disposed between the operation button and the switching contact mechanism, to switch the switching contact mechanism in conjunction with the rotational operation of the operation button. The switching contact mechanism includes a printed circuit board, a plurality of fixed contact electrodes disposed on the printed circuit board and spaced a predetermined distance away from each other, and a movable contact having a disc spring shape and disposed bridging between the plurality of fixed contact electrodes. The movable contact deforms to contact and separate from the fixed contact electrodes and switches an electrical connection between the fixed contact electrodes.

Abstract: A switch device includes an operation unit having a pushbutton for performing a pushing operation; a switch unit separably joined to the operation unit, the switch unit including an opening-closing contact mechanism opened or closed in conjunction with the pushing operation of the pushbutton of the operation unit, and a rotary drive plate rotating between a standby position and a usage position; and an engagement portion engaging the operation unit to the rotary drive plate to rotary-drive the rotary drive plate from the standby position to the usage position when the operation unit is attached to the switch unit. The operation unit is detached from or attached to the switch unit to set the opening-closing contact mechanism in respectively predetermined opening-closing states.

Abstract: A neutron detector with a unique neutron detecting element is disclosed. The neutron detecting element has an inner cylindrical neutron scintillator where a neutron detection body including a ZnS phosphor, and a neutron converter material which contains 6Li or 10B is arranged outside of the cylindrical substrate; a scintillator fluorescence detection body made by placing coiled wavelength shift fibers where two wavelength shift fibers are wound in parallel along the cylindrical substrate on said inner cylindrical neutron scintillator; and an outer cylindrical neutron scintillator where a neutron detection body is arranged inside of the cylindrical substrate, the outer cylindrical neutron scintillator being arranged on the scintillator fluorescence detection body. The fluorescence signals converted into pulse signals by two optical detectors are led to a coincidence circuit, and when two fluorescence signals are measured simultaneously during the predetermined period of time, a neutron signal is output.

Abstract: In a lattice-like pixel structure in which reflecting plates that reflect a fluorescent light from a fluorescent material-based neutron detecting sheet are arranged along vertical and horizontal axes at a regular interval, a lattice-like fluorescent light detecting member is provided, in which grooves may be formed at an upper half position of the vertical axis direction reflecting plate and at a center position in a vertical axis interval for accommodating a wavelength shifting fiber for vertical axis detection and at a lower half position of the horizontal axis direction reflecting plate and at a center position in a horizontal axis interval for accommodating a wavelength shifting fiber for horizontal axis detection; and a fluorescent material-based neutron detecting sheet is arranged only at a front surface or at both of a front surface and a back surface of the lattice-like fluorescent light detecting member.

Abstract: A bearing mechanism has a rotary member made of a resin, having a cylindrical bearing integrally formed thereof and protruding from a side surface of the rotary member; a base member made of a resin and rotatably supporting the rotary member, the base member having a support shaft protruding from a position facing the cylindrical bearing of the rotary member; and an urging member constantly urging the rotary member in a predetermined direction. The cylindrical bearing of the rotary member has a bearing hole to fit and insert the support shaft of the base member.

Abstract: A neutron detector without 3He gas, provided with a translucent type plate neutron scintillator having the structure capable to emit fluorescence from double-sides; the neutron scintillator is composed of ZnS fluorescent substance and a neutron converter which contains 6Li or 10B, and arranged at an angle of 45 degrees from the neutrons which are incident in parallel all together, inside of a cylindrical detector housing with the circular or square section where the specular reflector with the reflectance of 90% or more is arranged internally, and the fluorescence emitted when the neutron enters the scintillator is detected by two photo multipliers arranged on both sides, and signals output from these two photo multipliers are processed to be taken out as a neutron signal.

Abstract: A bearing mechanism has a rotary member made of a resin, having a cylindrical bearing integrally formed thereof and protruding from a side surface of the rotary member; a base member made of a resin and rotatably supporting the rotary member, the base member having a support shaft protruding from a position facing the cylindrical bearing of the rotary member; and an urging member constantly urging the rotary member in a predetermined direction. The cylindrical bearing of the rotary member has a bearing hole to fit and insert the support shaft of the base member.

Abstract: In a lattice-like pixel structure in which a reflecting plate that reflects a fluorescent light from a fluorescent material-based neutron detecting sheet is arranged along a vertical axis at a regular interval, and a reflecting plate that reflects a fluorescent light is arranged along a horizontal axis at a regular interval and at a right angle with respect to a series of fluorescent plates formed arranged along the vertical axis, a lattice-like fluorescent light detecting member is formed by providing such a structure that a groove may be formed at upper half position of the vertical axis direction reflecting plate and at a center position in a vertical axis interval for accommodating a wavelength shifting fiber for vertical axis detection for detecting the fluorescent light, and a groove may be formed at lower half position of the horizontal axis direction reflecting plate and at a center position in a horizontal axis interval for accommodating a wavelength shifting fiber for horizontal axis detection for d

Abstract: A new socket is provided for testing an IC package whereby the contact parts of the contacts are moved outward to be able to conduct attachment and detachment of an IC package without a load, the oxide film formed on the contacts of the IC package is removed to acquire a reliable conductivity, and a stress to deform the contacts of the IC package cannot be exerted. In the socket, the contact parts of the contacts come into contact with the contacts of the IC package while sliding outward (in the opposite direction to the receiving space for the IC package), and remove the oxide films on the surfaces of the IC contacts to secure a reliable conductivity. When the IC package is taken out, the contact parts of the contacts move outward, the supporting point moves inward by the swing of the engaging member; and thereby, the contact parts of the contacts go up virtually vertically in the initial state of the movement, and afterward, move oblique outward to come off from the contacts of the IC package.

Abstract: A receiving tray 6 is disposed on a pedestal surface 1a of a base member 1 vertically and movably, while below the pedestal surface 1a are disposed a push-up member 7 interlocked with the receiving tray and a spring 8 for urging the push-up member 7 downwards. A seating surface if for package leads P2 is formed along side portions of the pedestal surface 1a, and a large number of contacts 2 are arranged side by side, the contacts 2 having respective contact portions 2a for contact with the leads P2 which contact portions 2a are urged inwards to obtain a predetermined contact pressure for the leads. There are used movable cams 4 adapted to rotate upon depression of a cover 5 which covers the base member, to displace the contact portions 2a of the contacts 2 outwards away from the package leads P2. The movable cams 4 are each provided with an actuating arm 4c which comes into abutment with the push-up member 7 upon depression of the cover 5 and consequent rotation of the cam 4 to push up the receiving tray 6.

Abstract: A socket for an IC package includes a base member having a receptacle space for the IC package, a plurality of contacts arranged in parallel along the sides of the receptacle space of the base member. The contacts each have a contact portion for contact with a corresponding lead of the IC package received in the receptacle space. A spring portion urges the contact portion inwardly to obtain a contact pressure against a lead. A connecting shaft is pivotally supported vertically along each row of the contacts, and is associated with the contacts. A cover covers the base member, and the connecting shaft pivots by depression of the cover to displace the contact portion of each contact outwardly away from the corresponding lead of the IC package against a biasing force of the spring portion. The contact has a curved, first spring portion extending upwardly and inwardly from an inside edge of a plate portion.

Abstract: The invention relates to an IC socket, and more particularly an IC socket comprising a socket base plate having contacts on which the IC lead wires of the mounted IC are mounted and contacted, a pushing cover to be closed against the socket base plate through IC, and a pushing member for pressing the IC lead wires against the contacts in response to the closing operation of the pushing cover. Means for making a positive prevention of the displacements of the pushing positions of the IC lead wires by the pushing member is provided, that is, the pushing cover is rotatably supported on the socket base plate, the pushing member is supported on the socket base plate separate from the pushing cover and the pivoting shaft is supported in a longitudinal hole extending in a vertical direction and the pushing cover can be rotated and moved up and down vertically.

Abstract: This invention relates to an IC socket, and more particularly an IC socket comprising a socket base plate having contacts on which the IC lead wires of the mounted IC are mounted and contacted, a pushing cover to be closed against the socket base plate through IC, and a pushing member for pressing the IC lead wires against the contacts in response to the closing operation of the pushing cover. Means for making a positive prevention of the displacements of the pushing positions of the IC lead wires by the pushing member is provided, that is, the pushing cover is rotatably supported on the socket base plate, the pushing member is supported on the socket base plate separate from the pushing cover and the pivoting shaft is supported in a longitudinal hole extending in a vertical direction and the pushing cover can be rotated and moved up and down vertically.