摘要:
A down-sized pressure sensing semiconductor device with improved EMI tolerance as compared with conventional ones is achieved. A metal substrate (11) has a through hole (12), in which a cylinder (9b) of a pressure leading-in tube (9) is inserted, and is fixed to a flange (9a) of the pressure leading-in tube (9). A control circuit component (13) for controlling a semiconductor chip (1) is disposed on the metal substrate (11). On the metal substrate (11), a connector electrode (14) is further provided which establishes electrical connections between the pressure sensing semiconductor device and external circuits. Further, a metal cover (17) in the shape of a connector leading to external circuits is soldered to the metal substrate (11) to cover the semiconductor chip (1) and the control circuit component (13) together with the metal substrate (11). The cover (17) is electrically connected to a conductive wire (e.g., a ground wire) formed on the metal substrate (11).
摘要:
An impact load effected on the single body of an acceleration sensor device is absorbed with a relatively simple construction, thereby protecting a semiconductor sensor element provided in the sensor. The acceleration sensor device comprises a semiconductor sensor element 2 which can sense an acceleration in a direction perpendicular to its principal plane, a base plate 3 which supports the sensor element 2, a package 11 which supports the base plate 3 and encloses the base plate 3 and the sensor element 2, a frame 12 which has a plurality of leg sections 12d protruding from a bottom plane of the package 11 and is fixed on the package 11, and a cap-shaped resin cover 13 which has a roof section 13a opposite to an upper surface of the package 11 or the frame 12 and covers the package 11 from above as fixed on the package 11, and a side wall section 13b of the cover 13 extends at least to a position corresponding to a place where the sensor element 2 is arranged.
摘要:
A semiconductor acceleration sensor includes a substrate, a semiconductor sensor chip with a diaphragm and having one end fixed to a pedestal, the pedestal including at least one thick film layer and disposed on the substrate, and a protrusion of at least one thick film layer on the substrate directly opposite a free end of the sensor chip, shorter than the pedestal. The protrusion protects the semiconductor sensor chip from breakage at the diaphragm due to impacts.
摘要:
This invention relates to mixtures of molding sand which comprise a mixture of a molding sand with a rapid hardening cement containing calcium aluminate as amorphous glass and/or crystals, and/or calcium haloaluminate, a polymer water holding agent and a lime, or mixture of a molding sand with the above-mentioned rapid hardening cement, a polymer water reducing agent, a lime, and, if necessary, a foaming agent, and in either case with water. The mixture also provides a method of mixing the ingredients except for water and then kneading the mixture with water.
摘要:
A recording sheet comprising a support having thereon a color developer layer containing (1) a metal compound of an aromatic carboxylic acid and (2) at least one of gelatin or a gelatin derivative, the metal compound of an aromatic carboxylic acid being capable of forming a colored image when reacted with a color former.
摘要:
This invention relates to a method for retarding the setting time of rapid hardening cement which comprises adding a boric compound to cement manufactured by adding insoluble anhydrite to clinker powder containing 11CaO.7Al.sub.2 O.sub.3.CaX.sub.2 or adding the clinker to insoluble anhydrite and intergrinding the mixture, and a method for still more retarding the setting time of rapid hardening cement which comprises adding a boric compound to cement containing a set-retarding agent other than the boric compound.
摘要:
A shielding structure for a wire harness includes a seal member which has a wire through hole that allows the wire to pass therethrough while sealing a circumference of the wire. The wire has a structure where an insulating resin layer is formed on an outer circumference of a conductor, and a predetermined range in a length direction of the conductor is coated with a shield layer formed by resin plating to cover an outer circumferential surface of the insulating resin layer. A terminal portion of the wire is passed through the wire through hole of the seal member to be introduced into the shield wall to a position where the shield layer exists, whereby an inner circumference of the wire through hole is made in close contact with the shield layer to cause the shield layer and the seal member to be electrically conducted with each other.
摘要:
[Problem] To provide a compact terminal block.[Means for solving problem]A terminal block 1 includes: a terminal block main body 2 on which a plurality of seating surfaces 13 are provided; a plurality of fixing members 3 penetrating first and second connection terminals and fixing the first and second connection terminals to the seating surfaces 13 in a manner that the first connection terminals are connected to electronic devices, and the second connection terminals 8 to be electrically connected to the first connection terminals are overlapped with the seating surfaces 13. The seating surfaces 13 are sloped relative to a direction W that the first and second connection terminals are arranged.
摘要:
A waterproof structure, which is for one connector fixed to a mounting hole of an automotive motor's metallic case and another connector fixed to a mounting hole of an automotive inverter's metallic case and connected to the one connector, comprises ring-shaped first and second packings. The first packing resides between the one case's surface and the one connector's surface that are orthogonal to a fitting direction of the connectors such that the one case's mounting hole is surrounded thereby to provide waterproof interface between the one case and the one connector. The second packing resides between the other case's surface and the other connector's surface that are parallel to the fitting direction. The second packing extends on an outer circumferential surface of the other connector to provide waterproof interface between an inner circumferential surface of the other case's mounting hole and the other connector's outer circumferential surface.
摘要:
A terminal connection structure 1 includes first terminal fittings 5 connected to a motor 7, second terminal fittings 22 connected to an inverter, and a clip terminal. The first terminal fittings 5 and the second terminal fittings 22 respectively includes electrical contact portions 8 and 27 formed in a band plate shape and superimposed on each other. The clip terminal is caused to approach the electrical contact portions 8 and 27 along a crossing direction with respect to the longitudinal direction of the electrical contact portions 8 and 27 superimposed on each other, and sandwiches the electrical contact portions 8 and 27 superimposed on each other, between a pair of the contact pieces 35.