Nhk Spring Co., Ltd.

Other

Advics Co., Ltd.

Kokoku Intech Co., Ltd.

Hiroshi Mizukami

Chiharu Umetsu

Koichiro Yamada

Takeyoshi Shimbori

Mieko Yanagida

Kouji Nakamura

Ippei Iwai

Naoki Ueno

Mieko Saito

Eiji Nakamura

Kenichi Suzuki

Yukihiro Seki

Yutaka Kikuchi

Michiya Masuda

Masato Sugawara

Jun Umeno

Hideki Yamamoto

Masaaki Kobayashi

Mitsuo Mori

Masato Inaba

Juichi Shibatani

Kazuhiro Takahara

Tatsumi Ohishi

Kyohei Inoue

Toru Itihara

Koji Nakamura

Hideo Tukazaki

Naohito Nakano

Chiharu Umetu

A shell memberconstituting an accumulatorincluding a cover member, a shell memberhaving a cylindrical portion, an opening portionformed at one end of the cylindrical portionand welded to the cover member, and a closed portionformed at another end of the cylindrical portion, and an accumulation partaccommodated in the shell member. The cylindrical portionincludes an upper end portion, and a protruding portionhaving the opening portion. The protruding portionis thicker than the upper end portion

Shell member for accumulator, method of producing the same, accumulator, and method of producing the same

A method for manufacturing a stabilizer, the stabilizer including a main body bar that is elastically deformable, and a pair of connecting plates that are separately connected to a pair of left and right suspension devices, the method including a forging step of forming the connecting plate by forging both end portions of a material tube, in which in the forging step, both end portions of the material tube are crushed in a radial direction to be formed into the connecting plate in a state where a sealing metal plate heated to a temperature equal to or higher than a melting point is disposed inside both end portions of the material tube heated to a temperature lower than the melting point.

Method for manufacturing stabilizer

An accumulator includes a pressure vessel including a first section and a second section joined to each other via a joint portion and a partition portion separating an interior space of the pressure vessel into a liquid chamber and a gas chamber so that a volume ratio between the liquid chamber and the gas chamber in the pressure vessel is variable. The first section includes a thread portion for fastening the accumulator to a support member. The second section includes an abutting portion disposed opposite to the thread portion across the joint portion in an axial direction of the thread portion and configured to abut on the support member when the accumulator is fastened to the support member.

Accumulator

An accumulator includes a pressure vessel and a partition portion separating an interior space of the pressure vessel into a liquid chamber and a gas chamber so that a volume ratio between the liquid chamber and the gas chamber in the pressure vessel is variable. The pressure vessel includes a first section including a thread portion for fastening the accumulator to a support member and a second section joined to the first section and formed by a single piece including a tool engagement portion capable of engaging with a tool for rotating the accumulator. The first section and the second section are fitted together by mating portions coaxial with the thread portion and the tool engagement portion.

An accumulator according to an embodiment includes, for example, a base member; a cover member welded to the base member, the cover member and the base member defining a pressure chamber therebetween; a stretchable partition member that partitions the pressure chamber into an inner chamber and an outer chamber; and a labyrinth structure provided in at least one of a first part of the base member and a second part of the cover member. The first part is located closer to the outer chamber than a welded part between the base member and the cover member. The second part is located closer to the outer chamber than the welded part, facing the first part.

A stabilizer device includes a stabilizer extending in a width direction of a vehicle, and a bush unit. The bush unit includes a bracket formed of metal, and a rubber bush. The rubber bush is formed of a plurality of bush pieces, and is fixed to the stabilizer by an adhesion layer. The adhesion layer is constituted of an adhesion member including an adhesive applied to inner surfaces of the bush pieces. A bonding display portion formed of a part of the adhesion member is provided at a corner on an end face of the bush piece.

Vehicle stabilizer device

A hydraulic accumulator includes a shell, a bellows, and a self-seal stay disposed at a hydraulic-fluid inlet and including a cylindrical body portion open to a hydraulic chamber and a lid-shaped head portion defining a through hole. The self-seal stay includes a first weakened portion for deforming the body portion when a pressure of the gas chamber is more than a given threshold. The first weakened portion includes a first recessed portion formed in a circumferential direction of the body portion. The first recessed portion includes a bottom surface of a plane surface or a circular arc shaped curved surface which is convex toward outside of the body portion from inside thereof. At least one of both end portions of the bottom surface in the circumferential direction is joined with an outer circumferential surface of the body portion.

Hydraulic accumulator

An accumulator includes a bellows housed to freely expand and contract in a shell, a port part having a pressure fluid inflow port formed therein, and a self-sealing member arranged on a tip portion of the bellows to face the port part, in which when a pressure in the fluid chamber is lower than a predetermined pressure relative to an air chamber, the self-sealing member is allowed to abut onto a seal area of the port part to block the pressure fluid inflow port. The self-sealing member includes a resilient member arranged on a surface of a base material part, and an overhanging portion formed on the resilient member and allowed to abut onto the seal area for sealing. The port part includes a seal face having the seal area formed thereon, and a projecting portion arranged on a region other than the seal area on the seal face.

A vehicular brake system component is used in a brake system of a vehicle. The brake system component includes a sealable bonded component having a metal member and an elastic rubber member bonded to each other and located so as to touch a brake fluid.

Vehicular brake system component

A pressure container has a steel pipe and an end plate that is formed with a joint portion by allowing its tapered surface to touch a tapered surface of an opening end of the steel pipe so as to block the opening end. The steel pipe has a flange portion which can be cut at the opening end of the steel pipe, and the joint portion is allowed to touch the flange portion. The flange portion is pressed against the opening end along an axial direction so as to touch the end plate, and while the end plate is being pressed against the steel pipe along the axial direction, an electric current is applied so that welding is carried out.

Pressure container and pressure accumulating/buffer apparatus

In an accumulator comprising a pressure vessel, a bellows dividing the interior of the pressure vessel into a gas chamber filled with pressurized gas and a liquid chamber which communicates with a liquid pressure circuit via a liquid introduction port, a stay member attached to the inner surface of the pressure vessel inside the bellows and provided with a communication port for communicating the interior and exterior of the stay member with each other and adapted to be closed by a part of the bellows to define a fully contracted state of the bellows, and a safety valve provided in the stay member, typically in the form of a weakened portion of the stay member, for selectively communicating the exterior of the stay member with the interior of the stay member. Thus, because the safety valve is not provided in the pressure vessel itself, the safety valve of the present invention would not affect the sealing capability of the pressure vessel.

Accumulator having a safety valve

Disclosed is an accumulator comprising a cylindrical shell including a cylindrical portion, a partitioning member for partitioning the interior of the shell into a hydraulic chamber and a gas chamber, and a port including a hydraulic fluid flow path for communicating the exterior of the shell and the hydraulic chamber. The variation of the pressure of a hydraulic fluid flowing into the hydraulic chamber is accommodated by expansion and compression of a gas in the gas chamber according to expansion and contraction of the partitioning member. The port is approximately airtightly inserted into the cylindrical portion of the shell, and is welded to an outer circumference of the cylindrical portion by means of welding.

Disclosed is an accumulator comprising: a pressure vessel; an elastic bellows in which a compressed gas is sealed, an end of the bellows being fixed to an interior of the pressure vessel; a flow path having an opening communicating with the interior and an exterior of the pressure vessel; a valve connected to a movable end of the bellows to operatively close the opening according to elastic motion of the bellows; and a hydraulic chamber partitioned from a gas chamber formed in an interior of the bellows containing the compressed gas. The valve comprises an upper surface which can cover the opening, and plural circular protrusions which surround the entire circumference of the opening and can closely contact the circumference of the opening.

Accumulator and manufacturing process thereof

A diagnosing apparatus for diagnosing an accumulator operable to store under pressure a pressurized fluid delivered from a high-pressure source and to supply the pressurized fluid to a fluid-operated actuator for operating the fluid-operated actuator, the apparatus including a pressure detecting device for detecting a pressure of the pressurized fluid in the accumulator while the accumulator is placed in a fluid-tightly sealed state in which the accumulator is isolated from both the high-pressure source and the fluid-operated actuator, and a diagnosing device operable to diagnose the accumulator on the basis of the pressure of the pressurized fluid detected by the pressure detecting device in the fluid-tightly sealed state of the accumulator.

Growing community of inventors

Yokohama, Japan

Hiroshi Mizukami