Nabtesco Automotive Corporation

Takeo Shimomura

Akinori Nishimura

Ichiro Minato

Hiroyuki Murakami

Takuya Sugio

Hiroki Hasebe

Nobushige Matsuie

Hirohisa Todoki

A spring brake chamber includes a first case, a second case, and a coupling case. The first case includes an open end, a closed end, and an open end portion. The open end portion of the first case includes a tapered outer positioning portion having a diameter that increases toward the open end. The coupling case couples the first case and the second case. The coupling case includes an open end closer to the first case and an open end portion. The open end portion of the coupling case includes a tapered inner positioning portion having a diameter that decreases toward the open end. The first case is positioned relative to the coupling case by attaching the outer positioning portion to an outer side of the inner positioning portion.

Spring brake chamber

A brake chamber includes a rod member that makes reciprocating motion within a cylinder through a pressure of compressed air or an urging force of a spring, thereby causing a pushrod for activating a brake device of a vehicle to proceed into the brake device. The brake chamber further includes a diaphragm that deforms in response to supply of the compressed air to push the rod member, and a housing that forms an accommodation space for the diaphragm. The housing is connected to the cylinder with a first end of the cylinder being inserted in the housing. The brake chamber further includes a boot member connected to the cylinder and the rod member. The boot member includes a sealing portion to prevent entry of foreign matter into a connection portion between the housing and the cylinder by contacting an inner circumferential surface of the housing.

Brake chamber, boot member, and bush member

A structure for a spring chamber is formed by connecting a chamber case and a return spring housing case and includes a piston member and a push rod. The piston member has a spring receiving section which holds a power spring inside the chamber case and a cylinder body section which is interlocked with the spring receiving section. A diaphragm is arranged inside a return spring housing case chamber in the return spring housing case, defines a pressure medium chamber, and is deformed by an advancing and retracting operation of the cylinder body section. The push rod member advance and retract with an operation of the diaphragm, and performs braking or releasing of a brake. The push rod member is formed with integral molding of a push plate and a axle body section with aluminum material.

Structure for spring brake chamber

An oil suppressing structure in an air drying device for removing oil which rises in an interior of the air drying device used in a vehicle compressed air brake system includes an outer case, a drying casein an interior of the outer case, a base platefixed to a lower end portionof the outer case, and an outer coverfixed to a lower end portionof the base plateThe drying casehas a large-diameter long cylindrical body portionA and a small-diameter long cylindrical body portionB. A particulate desiccating agentis filled in an interior of the large-diameter cylindrical body portionA. An oil adsorbing materialis inserted in a space Sbetween an inner wall of the outer caseand the small-diameter long cylindrical body portionB of the drying case

Oil suppressing structure in air drying device

An external cover of a replaceable cartridge forms at least a portion of an air drying apparatus of a compressed air brake for a vehicle. A first slope is formed at an intermediate position between an extremity of a rising piece and a bottom of an external cover, and a left vertical wall is formed. A right vertical wall is formed opposite the left vertical wall. A top face is formed between the left vertical wall and the right vertical wall. An indentation is defined by the left vertical wall, the right vertical wall, and the top face. A sealing member is fitted into the indentation. A circular-arc portion is formed at a lower end of the right vertical wall. A second slope is formed in an extending manner at a predetermined height from a lower end face that is an intermediate position on a height of the external cover.

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Tokyo, Japan

Takeo Shimomura