Tokai Rubber Industries, Ltd.

Tomoki Inoue

Kazuhito Kasahara

Masayuki Sasagawa

Akira Takayanagi

Kazutaka Katayama

In a hose having a resin layer as an inner layer, a plasma treatment is performed on the inner surface of the inner layer and a connecting portion of an end part of the hose to thereby perform surface modification. Then, a sealing layer made of an elastic material is coated on and bonded to the inner surface of the connecting portion.

Hose with sealing layer, direct-connect assembly including the same and method of manufacturing the same

Piping unit for transporting a fuel is constructed by connecting a resin tube and a connector for connecting the resin tube to a mating pipe. The connector has a connector body including a retainer holding portion and a retainer for engaging with the mating pipe. The resin tube has a multilayered construction including an inner fuel barrier layer and an outer layer covered with a protective layer. The outer layer has a small outer diameter (od) up to 6 mm, the fuel barrier layer and the outer layer have a wall-thickness (t), and a ratio of the outer diameter (od)/the wall thickness (t) is in a range of 4 to 8.

Piping unit for transporting fuel

A piping structure for transporting a fuel arranged between an engine and a fuel tank, is constructed by use of a resin tube that is formed in a straight tubular shape. The resin tube is flexed and bent at one or more points along a longitudinal direction of the resin tube to define one or more bent portions and thereby is provided with a predetermined bent shape. The resin tube is fixed in a motor vehicle body so as to retain the bent portions and thereby assembled in the motor vehicle body.

Piping structure for transporting a fuel

Connection verifying device for a pipe and a connector has a body portion, a stop and verification arm and an abutment finger. The body portion includes an abutment plate and a fit-on portion. The stop and verification arm extends from an outer periphery of the abutment plate in one axial direction, while the abutment finger protrudes from one axial end of the fit-on portion in one axial direction. The abutment finger is arranged so as to abut and urge an annular projection of a pipe into an engagement slit of a retainer when the pipe and the connector are in half-fitting relation.

Connection verifying device and connection verifying structure for a pipe and a connector

Anti-rotation device for a pipe and a connector has a pipe connecting portion and a connector connecting portion constructed integrally on the pipe connecting portion. The anti-rotation device is mounted on the pipe and the connector while the pipe connecting portion clips a straight tubular inserting side portion of the pipe in anti-rotating relation and the connector connecting portion is connected to the connector in anti-rotating relation. Thereby the pipe is connected to the connector in anti-rotating relation.

Anti-rotation device and anti-rotation structure for a pipe and a connector

The connector clip for verifying complete connection integrally includes a clip body of U-shape in cross-section to receive a tubular holding portion and a connection verifying portion of U-shape in cross-section to receive an opposite axial side of an annular verification projection with respect to the pipe. The connection verifying portion has a verifying body and a snap-fit portion. The clip body and the verifying body are connected via a connection part, while the verifying body and the snap-fit portion are connected via a joint part. Reinforcement ribs are formed along an entire circumference of outer surface of the verifying body.

Connector clip for verifying complete connection between a connector and a pipe

The connector clip for verifying complete connection includes a connection verifying portion, more specifically, a pair of restraining portions having an assistance structure to certainly detect incomplete connection between the connector and the pipe. The assistance structure may be constructed so as to remove a sealing property between the connector and the pipe in incomplete connection relation with one another.

Connector clip for verifying complete connection between a connector and a pipe and connector connecting structure therefor

A connector clip integrally comprises a holder portion and a C-shaped clamp on one longitudinal end portion of the holder portion. The holder portion is mounted to a length from a connector to a curved portion of a pipe. The C-shaped clamp clips a tube connected to a tube connecting portion of the connector. The holder portion comprises a holding portion to hold a length from a tubular holder portion of the connector to an annular projection of the pipe therein, a first receiving portion formed on an opposite longitudinal side from the holding portion to receive a straight pipe portion of the pipe, and a second receiving portion formed on an opposite longitudinal side from the first receiving portion to receive a curved portion of the pipe.

Connector clip for verifying complete connection

A connector cover for providing a water shield between a connector and a pipe comprises two cover elements. The cover elements are joined each other to construct a tubular water shield, which internally has a connector receiving portion on one axial side thereof for receiving a pipe inserting portion of a connector, and a pipe receiving portion on an opposite axial side thereof for receiving a pipe. The pipe receiving portion has a pipe receiving section on an opposite axial side thereof for receiving an opposite axial side from an annular projection of the pipe, and a projection receiving section on one axial side thereof for receiving annular projection. An inner diameter of the pipe receiving section is designed generally identical to an outer diameter of the pipe.

Connector cover for providing a water shield between a pipe and a connector

A first bracket,is fixedly mounted by swage locking to a female connector,which is fixedly joined at one end with a resin tube,while a second bracket,is fixedly mounted by welding to a corresponding pipe,. When an insertion end,of the corresponding pipe,is inserted into the other end of the female connector,, the first bracket,and the second bracket,are turned relative to each other and about the axis of a second connecting end portion 6 of the female connector,so that a coupling hole,provided in the first bracket,and a coupling hole,provided in the second bracket,are coincided with each other across which a bolt or an anchor clip is inserted and tightened.

Piping structure

A resin tube,inserted and fixed to one end of a female connector,and a corresponding pipe,connected by snap in to the other end of a female connector,are fixed by a first holding means,and a second holding means,of a holder member,respectively. Holding portion of either the resin tube,and the corresponding pipe,is located off the common axis L as securely held by the holder member,Either the resin tube,or the corresponding pipe,is turned about the female connector,so as to connect with either the first holding means,or the second holding means

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Aichi-ken, Japan

Tomoki Inoue