One aspect of the present disclosure provides a grommet that can improve water sealing property. A grommet main body according to one aspect of the present disclosure includes an opposing portion that opposes a circumferential portion of an attachment hole of a vehicle body panel and an annular seal portion that is provided in the opposing portion and is brought into tight contact with the vehicle body panel. The seal portion includes an annular first lip portion that extends from the opposing portion toward the vehicle body panel and an annular second lip portion that extends from the opposing portion toward the vehicle body panel and is provided radially inward of the first lip portion. The first lip portion is inclined radially outward toward the tip end of the first lip portion, and the second lip portion is inclined radially inward toward the tip portion of the second lip portion.

A high-voltage bushing includes an insulating body disposed concentrically around a cylindrical winding support formed of electrically conductive material, and a sealing device for sealing a gap between the winding support and the insulating body. The sealing device includes a sealing element disposed in a circumferential sealing groove. The circumferential sealing groove is disposed in the winding support and accommodates the sealing element. A method for producing a high-voltage bushing includes placing an insulating body concentrically around a cylindrical winding support formed of electrically conductive material. The insulating body has mutually concentrically disposed insulating layers. A sealing element is introduced into a circumferential sealing groove in the winding support, and the insulating body is subsequently impregnated with a resin to seal a gap between the winding support and the insulating body.

The invention relates to an electrical feed-through unit for penetration of electrical contacts through the wall of a housing of an electric motor. It has a pin made of an electrically conducting material, which is surrounded by an electrically insulating material. The pin possesses an at least partially wedge-shaped contact surface for the area of a penetration through the wall of the housing and is able to be arranged with the sheath surrounding it in an at least partially wedge-shaped borehole penetrating through the wall of the housing. In addition, the invention relates to a housing of an electric motor, which contains at least one such electrical feed-through unit as well as an electric motor which has such a housing.

What is advantageous with the design of an electric motor proposed here, is that, through savings in assembly time and assembly expense, as well as parts costs, it is possible to assemble the motor components in the motor housing very simply and favorably, and additionally a number of advantages are offered as compared to use of conventional glass-to-metal feed-through (GTMS). The openings in the motor housing required for the electrical feed-through units are small, resulting in improved pressure resistance and stiffness of the motor housing. The cross-sectional surface to be sealed is also small, and as a consequence, the rates of leakage and permeation are low.

A connector adapted to secure an electrical power line entering an electrical meter box comprises (a) a cylindrical member adapted to be at least partially inserted into the meter box through an access hole, (b) a flange affixed to or integral with a first end of the cylindrical member and (c) a cylindrical grommet selectively insertable at least partially into a second end of the cylindrical member and securable therein. The flange remains outside of the meter box and abuts an outer surface of the wall of the meter box or abuts a gasket sandwiched between the flange and the outer surface of the wall of the meter box. The cylindrical member, the flange, and the grommet all have aligned through-holes through which the power line passes as the power line enters the meter box.

A wall bushing, comprising a head assembly, a conductive rod, and a connecting terminal sealing and covering the head assembly and the conductive rod. The connecting terminal and the conductive rod are electrically connected. The head assembly includes a transition tank and a transition plate that are connected to each other. An upper end of the transition tank is provided with a first through hole, and a lower end of the transition tank is hole-through. The transition plate is provided with a second through hole. The conductive rod extends through the first through hole and the second through hole. The transition tank and the transition plate are fixedly connected such that an accommodation cavity is formed around the conductive rod and in the transition tank.

An electrical feedthrough is providing that includes a base body, an insulating material, an electrical conductor, a creepage distance extension, and a sealing member. The base body has a through opening extending therethrough. The insulating material is in the through opening. The electrical conductor extends through the insulating material such that a portion of the electrical conductor protrudes from the insulating material. The creepage distance extension surrounds at least a section of the portion. The sealing member is between the insulating material and the creepage distance extension. The sealing member is a seal material that is at least partially mineral and crystalline.

A feed-through and sealing arrangement of an electrical connection fed through a housing wall of an electric motor or another electric device, the feed-through and sealing arrangement including a terminal pin plate through which a terminal pin is fed, at least one feed-through opening, a sealing surface, and a combined sealing part. The at least one terminal pin cover is inserted into the at least one feed-through opening when feeding-through the terminal pin through the housing wall.

A grommet includes a winding portion that protrudes from a first end of a body portion in an axial direction, is formed in two different directions, and winds around and covers a branching portion of a wiring member. The winding portion includes a first winding piece extending in a first extending direction along the outer peripheral surface of the branching portion, a second winding piece extending in a second extending direction opposite to the first extending direction, and a first opening end formed at an end in one of the two directions of the winding portion in a wound state and from which a first wiring member extending from the branching portion is drawn out. The first winding piece has a first cutout portion cut out from a distal end of the first winding piece in the first extending direction to the first opening end.

The invention provides an explosion resistant electrical fitting, including a cylindrical body, a sealing ring, a locking element, and a printed circuit board (PCB). The cylindrical body includes a first end, a second end opposite the first end, an interior cavity extending from the first end to the second end, a shoulder at the second end protruding radially outward relative to a central axis, and a threaded surface. The sealing ring is arranged about the cylindrical body between the threaded surface and the shoulder of the cylindrical body. The locking element is arranged at the first end. The PCB is arranged in the interior cavity of the cylindrical body.

An electrical feedthrough includes a base body with a sealing region, at least one opening and an electrical conductor fed through the opening, wherein the conductor is held in the opening by a fixing material and the fixing material seals the opening. The edges which surround the opening are designed to be sharp and all edges of an outer contour of the base body are provided with a chamfer or a rounding, which has a size or a radius r in the range of 0.3 mm to 2 mm.