Hitachi Cable, Inc.

Hitachi Metals, Ltd.

Other

Hitachi Construction Machinery Co., Ltd.

Kunihiro Fukuda

Yuta Kataoka

Sachio Suzuki

Hideaki Takehara

Shinya Hayashi

Jun Umetsu

Kazuhiko Nakagawa

Toshiaki Morita

Takumi Ueno

Yasutoshi Kurihara

Yasuo Kondo

Katsumi Nomura

Masahiro Seido

Mineo Washima

Takaaki Sasaoka

Kenji Koyama

Takashi Suzumura

Takashi Hattori

Kazuya Nonomura

Yuuki Tahara

This invention provides a gear component with high hardness of a surface layer in a tooth root and with the excellent bending fatigue strength. The gear component of the invention comprises a surface layer of a tooth root including a region in which the area percentage of carbides is 10% or lower and the number density of carbides is 6 pieces/10 μmor lower.

Gear component

A wire harness includes a plurality of wires, and a connector including a housing for holding end portions of the plurality of wires. The housing includes an airtight block that includes a resin, an insertion hole formed thereon for inserting the plurality of wires, a flow channel in communication with the insertion hole to flow a molten resin therethrough for resin-sealing a gap between the insertion hole and the plurality of wires, and a melting section to be the molten resin being integrally formed with the flow channel. The gap between the insertion hole and the plurality of wires is resin-sealed such that an ultrasonic vibrator relatively moving with respect to the airtight block is brought into contact with the melting section, and the molten resin melted from the melting section by heat generated by vibration of the ultrasonic vibrator is poured into the gap.

Wire harness and method of manufacturing the same

A method of manufacturing a wire harness including a plurality of wires and a connector with a housing. The method includes arranging the plurality of wires in an insertion hole of an airtight block of the housing to have a gap between the plurality of wires and an inner surface of the insertion hole, supplying a molten resin having a fluidity into the gap through a flow channel in communication with the gap, and solidifying the molten resin inside the space to resin-seal the gap between the insertion hole and the plurality of wires. The supplying of the molten resin is conducted such that a tool for melting a solid resin member is attached to the airtight block, the resin member is melted by applying an ultrasonic vibration while being pressed against the tool, and the molten resin obtained by the melting is poured into the flow channel.

Method of manufacturing wire harness

A connector includes a first terminal housing for housing a plurality of first connecting terminals aligned, a second terminal housing for housing a plurality of second connecting terminals aligned, a plurality of insulating members aligned and housed in the second terminal housing, a resin molded body provided in the second terminal housing, and an insulating member assembly formed by assembling the plurality of insulating members. The resin molded body includes at least one pair of restricting protrusions in order to restrict expanding movement of the insulating member assembly in the lamination direction when inserting the first connecting terminals into a gap between the second connecting terminals and the insulating members. The insulating member assembly includes a terminal protecting member to interfere with a rim of the first terminal housing to prevent the first terminal housing from being erroneously inserted into the gap.

Connector

A connector includes a first terminal housing for housing plural first connecting terminals aligned, a second terminal housing for housing plural second connecting terminals aligned, plural insulating members, a connecting member for collectively fixing and electrically connecting the plural first connecting terminals and the plural second connecting terminals at each contact point by pressing the plural first connecting terminals and the plural second connecting terminals. The connecting member includes a ring-shaped support fixed to the first terminal housing and a pressing portion an upper part of which is inserted into a hollow formed inside the ring-shaped support so as to be pivotally supported by the support. The pressing portion is configured to turn relative to the support by turning the upper part of the pressing portion and to move relative to the support with the turning of the pressing portion in a vertical direction.

A connector system includes a plurality of first connecting terminals, a plurality of second connecting terminals, a first housing, a second housing, a plurality of insulating members, a laminated structure formed by the plurality of first and second connecting terminals and the plurality of insulating members, a pressing mechanism including a rotary member rotatably supported on the first housing and configured to generate a pressing force to press the laminated structure in a lamination direction thereof, a rotation inhibiting mechanism configured to inhibit a rotation of the rotary member in a direction of generating the pressing force when the first housing is not fitted to the second housing, and a rotation-inhibition release mechanism configured to release the inhibition of the rotation of the rotary member by the rotation inhibiting mechanism so as to allow the rotation of the rotary member when the first housing is fitted to the second housing.

Connector system

A connector includes a first terminal housing for housing a plurality of first connecting terminals aligned, a second terminal housing for housing a plurality of second connecting terminals aligned, a plurality of insulating members that are aligned and housed in the first terminal housing, a connecting member for collectively fixing and electrically connecting the plurality of first connecting terminals and the plurality of second connecting terminals at each contact point by pressing one of the plurality of insulating members adjacent to the connecting member, and an insulating member assembly including the plurality of insulating members assembled such that the plurality of insulating members are each restricted from moving in a fitting direction thereof, and moving in a width direction perpendicular to a lamination direction of the laminated structure and to the fitting direction.

A connector includes a first terminal housing for housing a plurality of first connecting terminals aligned, a second terminal housing for housing a plurality of second connecting terminals aligned, a plurality of insulating members aligned and housed in the first or second terminal housing, and a connecting member for collectively fixing and electrically connecting the plurality of first connecting terminals and the plurality of second connecting terminals at each contact point by pressing the plurality of first connecting terminals and the plurality of second connecting terminals. The connecting member includes a ring-shaped support fixed to the first terminal housing, a rotating portion an upper portion of which is inserted into a hollow formed inside the ring-shaped support so as to be pivotally supported by the support, and a pressing portion to move in a vertical direction relative to the rotating portion by turning the rotating portion.

A connector includes a first terminal housing for housing a plurality of first connecting terminals aligned, a second terminal housing for housing a plurality of second connecting terminals aligned, a plurality of insulating members aligned and housed in the first or second terminal housing, and a plurality of device side connecting terminals each integrated with the plurality of first connecting terminals at a base end side of the plurality of first connecting terminals, and electrically connected to a device to which the first terminal housing is attached. The plurality of device side connecting terminals are each plate-shaped and each include a surface parallel to a lamination direction of the laminated structure and to a fitting direction of the first and second terminal housings. The first terminal housing includes a terminal block for holding the plurality of device side connecting terminals to be aligned in the lamination direction.

There is provided a harness connector comprising: a first terminal housing with plural first connector terminals aligned and accommodated therein; a second terminal housing with plural second connector terminals aligned and accommodated therein, the second terminal housing being engaged with the first terminal housing in use, each of the first connector terminals being connected with a counterpart one of the second connector terminals; and a pressing member, wherein: when the first and second terminal housings are engaged with each other, the first and second connector terminals are alternately stacked in such a manner as to provide a stack of plural terminal pairs consisting of a different one of the first connector terminals and its counterpart second connector terminal; the first and second connector terminals of each terminal pair are fixed each other by the pressing member and are electrically connected; and neighboring terminal pairs are electrically insulated from each other.

Harness connector

A connector includes a first terminal housing for housing three first connecting terminals aligned, a second terminal housing for housing three second connecting terminals aligned, a plurality of insulating members that are aligned and housed in the second terminal housing, and a connecting member for collectively fixing and electrically connecting the three first connecting terminals and the three second connecting terminals at each contact point by pressing one of the plurality of insulating members adjacent to the connecting member. The three first connecting terminals and the three second connecting terminals are each arranged in a form of a triangle when viewed in the fitting direction.

A wire harness includes a cable, a connector including an outer housing including a resin, a cable insertion hole into which an end portion of the cable is inserted, and a concave portion formed on an insertion side of the cable insertion hole, and a welding member including a resin to provide air-tightness between the outer housing and the cable by being welded to the outer housing by ultrasonic welding. The welding member is formed around the cable so as to surround the cable while allowing a gap portion to have a predetermined clearance from the cable, and fitted into the concave portion of the outer housing. Melted resin of the welding member is to flow into the gap portion to form an airtight seal about the cable.

A connector includes a first terminal housing with a plurality of first joining terminals aligned and accommodated therein, a second terminal housing with a plurality of second joining terminals aligned and accommodated therein, a connecting member for pressing and thereby collectively fixing the plural first joining terminals and the plural second joining terminals at the contacts therebetween respectively, and a covering member slidably provided to cover the connecting member, to maintain the pressing force of the pressed connecting member at a specified or greater pressing force that assures the stable connections between the first joining terminals and the second joining terminals, respectively, the covering member being provided in such a manner that it is not slidable to cover the connecting member until the pressing force of the connecting member reaches the pressing force that assures the stable connections between the first joining terminals and the second joining terminals, respectively.

A wire harness includes a plurality of cables arranged in parallel, and a connector including a housing to which end portions of the plurality of cables are connected. Air-tightness between an air-tight block and the cables is maintained by inserting a melting member into cable insertion holes through a first insertion part, vibrating the melting member and pressing the melting member against a first press receiving part formed at an inner wall surface of the cable insertion holes such that a front end portion of the melting member in contact with the first press receiving part is melted into a melt resin to allow the melt resin to be poured into a gap between the cables and the air-tight block and a periphery of the cables to be covered with the melt resin.

A connector includes a first terminal housing for housing a plurality of first connecting terminals aligned, a second terminal housing for housing a plurality of second connecting terminals aligned, and a connecting member for collectively fixing and electrically connecting the plurality of first connecting terminals to the plurality of second connecting terminals at each contact point by pressing the adjacent insulating members. The plurality of first connecting terminals are aligned and held in a first inner housing housed in the first terminal housing. The plurality of second connecting terminals are aligned and held in a second inner housing housed in the second terminal housing. The first and/or second connecting terminals includes a low rigidity portion that can be deformed, when pressed by the connecting member, such that portions of the first and/or second connecting terminals on the contact point side are parallel to portions thereof on the opposite side.

Growing community of inventors

Tsukuba, Japan

Kunihiro Fukuda