A ceramic subassembly manufactured by a 3D-printing process is described. The ceramic subassembly comprises a ceramic substrate having a sidewall extending to spaced apart first and second end surfaces. At least one via extends through the substrate from the ceramic substrate first end surface to the ceramic substrate second end surface. In cross-section, the via has a square-shape with rounded corners.

A waterproof connector that is easy to design and manufacture and that can provide sufficiently close contact with respect to a through hole including a tapered opening is provided. A sealing member that provides waterproofness of the waterproof connector includes an inner tube portion and an outer tube portion, and the connector body includes a holding projection. The holding projection is configured to be inserted between the inner tube portion and the outer tube portion from a rear side in an insertion direction and configured to push the outer tube portion against an inner circumferential face of the tapered opening when the sealing member is received between the outer circumferential face of the connector body and the inner circumferential face of the tapered opening.

A cable management system configured to account for and accommodate physical movement of the cables being managed. The cable management system includes an elastic element, such as a spring, to accommodate for the anticipated expansion and/or contraction movements of the cables being managed. The cable management system may be applicable for vertical cable installation projects that are installed in outdoor applications.

A grommet applied to a wire harness includes: a body (10) fitted into a through hole and stops water from entering the through hole; and an umbrella-shaped unit including an annular wall section, a first lip section, and a second lip section, the first lip section and the second lip section abutting an abutting target surface in a state in which the body is fitted into the through hole. The first lip section and the second lip section are provided in the annular wall section so as to be located within an installation region of an insulator when viewed along an axial direction. The umbrella-shaped unit includes a stress concentration section that is provided in an annular shape in the annular wall section on a center axis side with respect to the first lip section, and is located within the installation region when viewed along the axial direction.

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 sealing grommet for a sealed feedthrough of a strand-shaped element through a wall, in particular for a cable feedthrough for the automotive sector, is configured for insertion in an installation direction into an opening, bordered by the wall and with a predefined opening width. The sealing grommet has a grommet body with a push-through area which extends in the installation direction and which is fed through the opening in the installation direction during installation, in such a way that it engages behind the wall in the installed state. An auxiliary element facilitating the insertion into the opening is provided, which has a circumferential sliding area containing at least one sliding surface, and wherein the at least one sliding surface bears at least partially on a circumferential surface of the push-through area.

A connector for device is configured to be attached to a device housing including a hole and configured to hold an electric wire inserted into the hole, and the connector for device includes a tube-shaped housing into which the electric wire is inserted and which is configured to be inserted into one end of the hole of the device housing, and a front holder configured to be engaged with one end of the tube-shaped housing, wherein the front holder includes an electric wire holding portion to which the electric wire is held, and a locking portion that is continuous with the electric wire holding portion and configured to be engaged with the tube-shaped housing, and wherein the electric wire holding portion is positioned inside the tube-shaped housing in a state where the locking portion is engaged with the tube-shaped housing.

A method for manufacturing a grommet, which is fixed to a wire harness W inserted into an opening portion of a panel P and which is fitted and attached to the opening portion to thereby support the wire harness W on the panel P. The grommet includes peripheral walls that surrounds the wire harness W to form a sound shield space S around the wire harness W, and a soundproof wall that is formed in the sound shield space S so as to cross a longitudinal direction of the wire harness W. The soundproof wall is designed by use of an expression of TL=20 log(p×f)−42.5 where TL designates transmission loss of the soundproof wall, ρ designates surface density of the soundproof wall, and f designates a frequency.

A grommet according to an aspect of the present disclosure includes: a base part that is fixed to an insertion hole provided in a vehicle body panel; a tubular part that covers an outer circumference of a wire harness inserted into the insertion hole; and a coupling part that couples a basal portion of the tubular part and the base part while allowing tilting movement of the tubular part. The coupling part includes a compression allowance part provided on a first direction side in a circumferential direction and a tension allowance part provided on a second direction side opposite to the first direction side, such that when a leading end side of the tubular part is inclined toward the first direction side, stress applied to the base part is smaller than when the leading end side of the tubular part is inclined toward the second direction side.

A grommet body of a grommet includes: a large-diameter tubular portion; a first small-diameter tubular portion arranged on one side of a through-hole; and a second small-diameter tubular portion arranged on another side of the through-hole. The grommet body includes an umbrella-like sound insulation portion which covers the through-hole from another side, and the sound insulation portion is configured such that an abutting side surface is folded back in such a way as to face a radial outer side of the grommet body with a folded-back portion as a base point. The sound insulation portion in a state in which the abutting side surface is folded back in such a way as to face the radial outer side of the grommet body has a pleated shape, and an outer diameter of the sound insulation portion in this state is smaller than an inner diameter of the through-hole.