Fujikoki Corporation

Denso Corporation

Mahle Filter Systems Japan Corporation

Nok Corporation

Tokyo-buhin Kogyo Co., Ltd

Shin Yoshida

Makoto Sudo

Osamu Hishinuma

Hideki Tanaka

Takao Okada

Yuichi Kato

Hiroatsu Yamada

Toshiyuki Ishida

Atsushi Nonaka

Shuji Yoshitsune

Daizo Ito

Akinori Nanbu

Seiji Tani

Kiyohiro Suzuki

Manshu Kameike

Masahiro Tomitsuka

Masanori Sudo

Mitsuyoshi Ohba

Junya Kaneko

Hideyuki Yanagiya

A pulsation damper is small in size and can achieve an appropriate supporting force for a diaphragm damper. A pulsation damper accommodated in a case includes a diaphragm damper having a gas sealed therein, and a first support member and a second support member that are disposed between the case and the diaphragm damper and that hold the diaphragm damper.

Pulsation damper

Disclosed is a structure for attachment of a drain nut to a synthetic resin cover. The cover has a nut engagement portion formed in an outer surface of the cover, a cylindrical engagement portion formed with a plurality of piece parts on an inner surface of the cover, and a stepped portion formed between the nut and cylindrical engagement portions. The drain nut has a nut portion engaged in the nut engagement portion, a female thread portion formed in the nut portion for screw-in of a drain plug, a cylindrical portion formed concentrically with the nut portion and engaged in the cylindrical engagement portion, a large-diameter portion formed between the nut and cylindrical portions and engaged in the stepped portion, with an O-ring held between the large-diameter portion and stepped portion, and a collar portion formed around the cylindrical portion and retained by front ends of the piece parts.

Drain nut attachment structure for synthetic resin cover

A diaphragm includes a flange and a protrusion provided to protrude to one side of the flange, wherein the protrusion has at least two annular curved portions provided annularly on a ceiling portion having a flat surface-like shape and an outer side in a radial direction of the ceiling portion, in a state where pressure on an outer wall side of the protrusion and pressure on an inner wall side of the protrusion are the same, the at least two annular curved portions are each formed to be curved in a cross-section of the diaphragm obtained by cutting the diaphragm by a virtual plane including a center line of the diaphragm, the centers of curvature of the curved portions being arranged at different positions on a side opposite to a protruding direction of the protrusion, and the diaphragm is formed of a sheet metal.

Diaphragm and pulsation damper using same

A pulsation damper includes an upper diaphragm, a lower diaphragm configured to form a sealed space having a predetermined pressure with the upper diaphragm, in which an inert gas is filled; and a deformation suppressing member formed of an elastic material, and comprising an inner cylindrical portion, and an extension portion extending from a center portion on an outer peripheral surface of the inner cylindrical portion such that the extension portion extends outward from a center axis of the inner cylindrical portion, wherein the deformation suppressing member is arranged inside the sealed space such that an outer periphery of the extension portion abuts against inner walls of the upper diaphragm and the lower diaphragm.

There is provided a sealing structure and a gasket which can seal both of a portion where a groove for mounting the gasket is formed and a portion where a groove for mounting the gasket is not formed when the portions are connected. The gasket includes a first gasket portionwhich has a first mounted portionto be mounted in a first grooveto come in close contact with a bottom faceof the first grooveand which is formed in a shape along an end portion of an outer wall portionand a second gasket portionwhich has a second mounted portionto be mounted in a second groovenear a portion connected to the first gasket portionand which is formed in a shape along an end portionof a partition wall, the second mounted portionhaving an inclined face for coming in close contact with the inclined bottom faceof the second groove

Sealing structure and gasket

In the expander ( ) in a drum brake, when the brake is activated, the sleeve ( ) is extended in the lateral directions in the drawing by the wedge ( ) inserted within the housing ( ), and the shoe engaged with the clip ( ) is swung to press the lining ( ) against the drum, and friction braking is performed. When the lining ( ) wears away and the amount of movement of the sleeve ( ) increases, the sleeve ( ) is rotated by reciprocal action with a drive ring ( ) that is engaged with the periphery of the sleeve and, thereby, the pressing screw ( ) screwed thereon comes out by the amount of the increase of movement (the amount of wear on the lining). A flat surface ( ) is formed on the periphery of the sleeve and the detecting head ( ) of the displacement detection apparatus detects the rotation of the sleeve ( ).

Brake lining wear detection apparatus

Growing community of inventors

Tokyo, Japan

Shin Yoshida