The present invention relates to multi-core plug-in electrical connection structures, in particular to a multi-core plug-in electrical connection structure for logging while drilling tools, which comprises a socket shell with a guiding function arranged at an end of a logging while drilling tool A and a plug shell with a guiding function arranged at an end of a logging while drilling tool B; wherein the socket shell is provided with a socket inner core with a buffering effect therein; and the plug shell is provided with a plug inner core with a buffering effect therein. The present invention has the following beneficial effects: with the above technical scheme, multi-core electrical connection between downhole logging while drilling tools can be achieved, the electrical connection pins can be increased to 25 pins or more, mixed heavy current and light current connections can be realized, and the electrical connection structure is simple with short axial dimension, good anti-vibration performance, and reliable connection. The blind insertion and the convenient connection can be realized.

The present disclosure provides a connector assembly comprising a shielding cage and a liquid cooling cabin. The shielding cage has an insertion space and a window in communication with the insertion space. The liquid cooling cabin is configured to allow a cooling liquid to circulate and flow inside, the liquid cooling cabin comprises a shell having an opening, a thermal coupling cover provided at the opening of the shell, and an elastic sealing unit sealing a gap between the thermal coupling cover and the shell, the thermal coupling cover having a thermal coupling plate entering into the insertion space via the window of the shielding cage, the thermal coupling plate being capable of elastically moving in a direction close to the shell and elastically restoring in a direction away from the shell by a function of the elastic sealing unit.

An electrical connector apparatus for use in a downhole tool comprising a housing, a contact screw within outer threads and inner threads, a contact plunger within the inner bore of the housing and a second cylinder protruding from the first cylinder. The contact spring is located between the contact plunger and the contact screw and pre-loads the contact plunger within the housing.

A bushing comprises an insulating body having a first body end portion, a second body end portion, and a body center portion connecting the first body end portion and the second body end portion, and a bushing conductor coaxially extending within and mechanically coupled to the insulating body. The bushing conductor includes a first connecting portion having a first end face at the first body end portion, a second connecting portion having a second end face at the second body end portion, and a center portion electrically and mechanically connecting the first connecting portion and the second connecting portion. The first connecting portion is elastically deformable with respect to the first body end portion along a radial direction and/or the second connecting portion is elastically deformable with respect to the second body end portion along the radial direction.

A plug arrangement for use with cables (K) having cable plugs (S) comprises a housing (1) for receiving the cable plug (S), a clamping element (5) encompassing the cable (K) and accommodated in the housing (1), which clamping element (5) clamps, in a compressed state, the cable (K), and a clamping sleeve (3) for establishing a threaded connection with the housing (1). When the threaded connection is tightened, the clamping element (5) is braced in the housing (1) and the cable (K) is clamped in the clamping element (5). The front end of the clamping element (5) facing the cable plug (S) is configured for receiving and positioning the cable plug (S) in a predetermined position at the front end of the clamping element (5) or is provided with at least one stop for the cable plug (S). Thus, when the threaded connection is tightened, the cable plug (S) is also positioned with respect to the housing (1) and the clamping element (5) so as not to rotate and fixed.

A plug arrangement for use with cables (K) having cable plugs (S) comprises a housing (1) for receiving the cable plug (S), a clamping element (5) encompassing the cable (K) and accommodated in the housing (1), which clamping element (5) clamps, in a compressed state, the cable (K), and a clamping sleeve (3) for establishing a threaded connection with the housing (1). When the threaded connection is tightened, the clamping element (5) is braced in the housing (1) and the cable (K) is clamped in the clamping element (5). The front end of the clamping element (5) facing the cable plug (S) is configured for receiving and positioning the cable plug (S) in a predetermined position at the front end of the clamping element (5) or is provided with at least one stop for the cable plug (S). Thus, when the threaded connection is tightened, the cable plug (S) is also positioned with respect to the housing (1) and the clamping element (5) so as not to rotate and fixed.

Provided is a connection structure for a power conversion device to be mounted in a vehicle, including: a casing of the power conversion device; an electric connection part, which is to be mechanically connected to the casing, and is configured to electrically connect the power conversion device and an external device to each other; and an electric conductor configured to electrically connect the power conversion device and the electric connection part to each other, wherein the casing and the electric connection part are mechanically connected to each other through intermediation of an anti-vibration structure, and wherein the electric conductor has such flexibility as to be able to follow a relative displacement between the casing and the electric connection part.

Provided is a connection structure for a power conversion device to be mounted in a vehicle, including: a casing of the power conversion device; an electric connection part, which is to be mechanically connected to the casing, and is configured to electrically connect the power conversion device and an external device to each other; and an electric conductor configured to electrically connect the power conversion device and the electric connection part to each other, wherein the casing and the electric connection part are mechanically connected to each other through intermediation of an anti-vibration structure, and wherein the electric conductor has such flexibility as to be able to follow a relative displacement between the casing and the electric connection part.

A charging plug, having a housing for accommodating power contacts and power contacts for power transmission, and having an apparatus for detecting liquid, which apparatus is configured to detect liquid collecting inside the housing.

A motor-driven compressor includes a plurality of motor wires and an insulating terminal container. The motor wires include portions covered with an insulating tube and distal ends at which a connection terminal is provided. The terminal container includes a cluster block and a terminal holder. The cluster block accommodates the connection terminal and has an opening. The terminal holder holds the connection terminal and has a lid that closes the opening. The cluster block includes a base portion. The lid has a cutout that receives the tube. The lid is in contact with the base portion such that a part of a hole defined by the cutout is closed by the base portion.