Abstract: In an electrical device, a terminal block includes a mounting hole portion formed so as to be opened in a bottom surface and a mounting bore which is formed so as to be opened in a top surface, and connects the mounting hole portion and an outside of the top surface to each other, the swing-side interlock connector includes a swing-side housing which is mounted inside the mounting hole portion, and protrudes from the mounting bore, a cover is placed on the top surface of the terminal block by fitting a fitting hole to a protruding portion (31a) of the swing-side housing protruding from the mounting bore, and a gap portion which is formed around the protruding portion (31a), and connects the mounting hole portion and the outside of the top surface to each other is covered with the cover as viewed from the side of the housing opening portion.

Abstract: Provided is a waterproof connector, with which waterproof performance can be improved. The waterproof connector includes a connector main body, which is mounted on a circuit board provided inside a housing, and is to be inserted into a housing connector hole formed in the housing; an annular seal member, which is provided outside the housing, and surrounds the connector main body; a bracket, which is provided to the housing, and is configured to presses the annular seal member against the housing; and fasteners configured to fix the bracket to the housing. The annular seal member is held in contact with a connector main body sealing surface and a housing sealing surface to close a gap between the housing and the connector main body.

Abstract: In an electrical device, a terminal block includes a mounting hole portion formed so as to be opened in a bottom surface and a mounting bore which is formed so as to be opened in a top surface, and connects the mounting hole portion and an outside of the top surface to each other, the swing-side interlock connector includes a swing-side housing which is mounted inside the mounting hole portion, and protrudes from the mounting bore, a cover is placed on the top surface of the terminal block by fitting a fitting hole to a protruding portion (31a) of the swing-side housing protruding from the mounting bore, and a gap portion which is formed around the protruding portion (31a), and connects the mounting hole portion and the outside of the top surface to each other is covered with the cover as viewed from the side of the housing opening portion.

Abstract: Provided is a power conversion device including: power semiconductor elements, a support case, a heat sink, in which a plurality of boss portions are formed; a smoothing capacitor including a case member having a plurality of leg portions; and a bus bar configured to connect the smoothing capacitor and the DC input terminal, wherein, in the power conversion device in which the plurality of leg portions of the case member being respectively fixed to the plurality of boss portions of the heat sink, wherein materials and dimensions of the respective boss portions, the respective leg portions, the support case, and the bus bar are determined so that a total thermal expansion/contraction amount of the respective boss portions and the respective leg portions falls within a range of 0.9 to 1.1 relative to a total thermal expansion/contraction amount of the support case and the bus bar.

Abstract: Provided is a power conversion device including: power semiconductor elements, a support case, a heat sink, in which a plurality of boss portions are formed; a smoothing capacitor including a case member having a plurality of leg portions; and a bus bar configured to connect the smoothing capacitor and the DC input terminal, wherein, in the power conversion device in which the plurality of leg portions of the case member being respectively fixed to the plurality of boss portions of the heat sink, wherein materials and dimensions of the respective boss portions, the respective leg portions, the support case, and the bus bar are determined so that a total thermal expansion/contraction amount of the respective boss portions and the respective leg portions falls within a range of 0.9 to 1.1 relative to a total thermal expansion/contraction amount of the support case and the bus bar.

Abstract: Provided is a waterproof connector, with which waterproof performance can be improved. The waterproof connector includes a connector main body, which is mounted on a circuit board provided inside a housing, and is to be inserted into a housing connector hole formed in the housing; an annular seal member, which is provided outside the housing, and surrounds the connector main body; a bracket, which is provided to the housing, and is configured to presses the annular seal member against the housing; and fasteners configured to fix the bracket to the housing. The annular seal member is held in contact with a connector main body sealing surface and a housing sealing surface to close a gap between the housing and the connector main body.

Abstract: A waterproof connector includes a contact, a housing, a seal member, and a cover member. An inserted portion of the housing is inserted in an insertion hole of a wall portion of a device case. The inserted portion includes an annular surface disposed flush to or with a step provided with respect to a surface of the wall portion. The seal member includes an annular first seal portion, fitted in an annular groove formed in the annular surface, and a covering portion, extending orthogonally from the first seal portion toward the surface side of the wall portion. The covering portion spanningly covers a first gap, which is a gap between an outer peripheral surface of the inserted portion and an inner peripheral surface of the insertion hole. The cover member is fixed to the wall portion across the covering portion.

Abstract: A waterproof connector includes a contact, a housing, a seal member, and a cover member. An inserted portion of the housing is inserted in an insertion hole of a wall portion of a device case. The inserted portion includes an annular surface disposed flush to or with a step provided with respect to a surface of the wall portion. The seal member includes an annular first seal portion, fitted in an annular groove formed in the annular surface, and a covering portion, extending orthogonally from the first seal portion toward the surface side of the wall portion. The covering portion spanningly covers a first gap, which is a gap between an outer peripheral surface of the inserted portion and an inner peripheral surface of the insertion hole. The cover member is fixed to the wall portion across the covering portion.

Abstract: A rubber plug for closing each service hole has a cylindrical seal surface to be fitted in the service hole, and a flange to be brought into contact with an outer surface of the housing. The rubber plug has a cylindrical cup-shaped cored bar inside. The cored bar has a disc-shaped flange-portion cored bar, outside the housing, which is greater in a radial direction than a cylindrical portion of the service hole. The cored bar has a convex portion in a cylindrical-cup bottom of a recess, of the rubber plug, which is formed inward of the housing. The convex portion is coaxial with the cylindrical seal surface and projects toward an outward direction of the housing. A lip seal to be brought into contact with the housing is provided at a surface of the flange.

Abstract: A fuel injection valve according to the present invention has an expanded portion formed in a first injection-hole plate on an upstream side, thereby allowing positional misalignment between injection-hole portions. As a result, a radial dimension between an inner diameter-side circumferential edge of an upstream-side injection hole outlet portion and an inner diameter-side circumferential edge of a downstream-side injection hole inlet portion is not required. Thus, a plate thickness of a second injection-hole plate on a downstream side can be kept to minimum. As a result, weldability between an injection-hole plate body and a valve seat is improved.

Abstract: A rubber plug for closing each service hole has a cylindrical seal surface to be fitted in the service hole, and a flange to be brought into contact with an outer surface of the housing. The rubber plug has a cylindrical cup-shaped cored bar inside. The cored bar has a disc-shaped flange-portion cored bar, outside the housing, which is greater in a radial direction than a cylindrical portion of the service hole. The cored bar has a convex portion in a cylindrical-cup bottom of a recess, of the rubber plug, which is formed inward of the housing. The convex portion is coaxial with the cylindrical seal surface and projects toward an outward direction of the housing. A lip seal to be brought into contact with the housing is provided at a surface of the flange.

Abstract: It is structured that plural service holes are provided on a surface of the casing, that a flange of a rubber plug for sealing the service hole has a lip seal that abuts against the casing of the power conversion equipment, that the rubber plug has a recessed section, that the surface of the casing is provided with a rib on an outer circumference side of the flange of the rubber plug, that an end surface of the rib is orthogonal to an axis of the service hole, and that a relationship of h1?h2 is established when a distance from an abutment surface of the lip seal to an end surface of the rubber plug on a side with the recessed section is set as h1 and a distance from the abutment surface of the lip seal to the end surface of the rib is set as h2.

Abstract: It is structured that plural service holes are provided on a surface of the casing, that a flange of a rubber plug for sealing the service hole has a lip seal that abuts against the casing of the power conversion equipment, that the rubber plug has a recessed section, that the surface of the casing is provided with a rib on an outer circumference side of the flange of the rubber plug, that an end surface of the rib is orthogonal to an axis of the service hole, and that a relationship of h1?h2 is established when a distance from an abutment surface of the lip seal to an end surface of the rubber plug on a side with the recessed section is set as h1 and a distance from the abutment surface of the lip seal to the end surface of the rib is set as h2.

Abstract: When injection-hole inlets and injection-hole outlets are projected vertically onto an X-Y plane (N) perpendicular to a valve-seat axial center, an injection-hole arrangement angle (?), which is formed by a straight line (a) passing through a center of the injection-hole inlet of a reference injection hole and the valve-seat axial center and a straight line (b) passing through a center of the injection-hole inlet of the injection hole neighboring the reference injection hole and the valve-seat axial center on the plane (N), is set so as to become smaller as being closer to a Y-axis. A fuel turn angle (?) on a wide-angle side, which is formed by the straight line (a) and a straight line (c) passing through a center of the injection-hole inlet and a center of the injection-hole outlet on the plane (N), has a relationship: 90°<?<180°.

Abstract: A fuel injection valve in which a valve element is formed at a distal end thereof with a flat portion 13c which is substantially parallel with an injection hole plate 11, injection hole entrances 12a are arranged inside an imaginary envelop 15 along an intersection between an extension 10b of a downstream inner wall of a seat portion of a valve seat and an upstream plane 11c of the injection hole plate and outside the flat plane at the distal end of the valve element, and the relation between the vertical distance h between the flat plane at the distal end of the valve element and the upstream plane of the injection hole plate with the valve opened and the diameter d of the injection hole entrance is h<d, and the injection hole 12 is formed to be inclined by a predetermined angle with respect to the direction of the thickness of the injection hole plate.

Abstract: In a fuel injection valve, a thin portion that is formed so as to make a downstream hollow in an upstream end surface of a first spraying aperture plate is disposed on the first spraying aperture plate. First spraying apertures that are disposed on the thin portion are perpendicular to the first spraying aperture plate. L/d of the first spraying apertures is less than 1, where L is axial length, and d is diameter. Second spraying apertures on a second spraying aperture plate are inclined relative to an axis that is perpendicular to the second spraying aperture plate. An aperture area of an outlet portion of the first spraying apertures is smaller than an aperture area of the inlet portion of the second spraying apertures. An entire outlet opening of the first spraying apertures is disposed inside an inlet opening of the second spraying apertures.

Abstract: An injection hole inlet is disposed at the upstream side face of the injection hole plate in such a way that, assuming that ? denotes the angle between respective lines obtained by vertically projecting a straight line that passes through the center of the injection hole inlet and the center of the valve seat and the major axis of the injection hole inlet onto a perpendicular plane that passes through the center of the injection hole inlet and is perpendicular to the center axis of the valve seat and assuming that ? denotes the angle between respective lines obtained by vertically projecting the straight line that passes through the center of the injection hole inlet and the center of the valve seat and the minor axis of the injection hole inlet onto the perpendicular plane, ?<? is satisfied.

Abstract: A fuel injection valve according to the present invention has an expanded portion formed in a first injection-hole plate on an upstream side, thereby allowing positional misalignment between injection-hole portions. As a result, a radial dimension between an inner diameter-side circumferential edge of an upstream-side injection hole outlet portion and an inner diameter-side circumferential edge of a downstream-side injection hole inlet portion is not required. Thus, a plate thickness of a second injection-hole plate on a downstream side can be kept to minimum. As a result, weldability between an injection-hole plate body and a valve seat is improved.

Abstract: In a fuel injection valve, a thin portion that is formed so as to make a downstream hollow in an upstream end surface of a first spraying aperture plate is disposed on the first spraying aperture plate. First spraying apertures that are disposed on the thin portion are perpendicular to the first spraying aperture plate. L/d of the first spraying apertures is less than 1, where L is axial length, and d is diameter. Second spraying apertures on a second spraying aperture plate are inclined relative to an axis that is perpendicular to the second spraying aperture plate. An aperture area of an outlet portion of the first spraying apertures is smaller than an aperture area of the inlet portion of the second spraying apertures. An entire outlet opening of the first spraying apertures is disposed inside an inlet opening of the second spraying apertures.

Abstract: When injection-hole inlets and injection-hole outlets are projected vertically onto an X-Y plane (N) perpendicular to a valve-seat axial center, an injection-hole arrangement angle (A), which is formed by a straight line (a) passing through a center of the injection-hole inlet of a reference injection hole and the valve-seat axial center and a straight line (b) passing through a center of the injection-hole inlet of the injection hole neighboring the reference injection hole and the valve-seat axial center on the plane (N), is set so as to become smaller as being closer to a Y-axis. A fuel turn angle (a) on a wide-angle side, which is formed by the straight line (a) and a straight line (c) passing through a center of the injection-hole inlet and a center of the injection-hole outlet on the plane (N), has a relationship: 90°<?<180°.