Aisan Kogyo Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Kensuke Niwa

Koji Yoshida

Tatsuki Fukui

Shinya Higashi

Hiroyasu Kariya

Takuhito Fujiwara

Morihiro Takemura

Yuichi Murakoshi

Akira Iida

Satoshi Ito

Takehiro Yamauchi

Takeaki Morizono

Hidetomo Ishida

Takashi Kanie

Takuya Kono

Takayuki Kondo

Akihiro Yano

Satoshi Nakamura

Hironori Tanikawa

Takayuki Usui

Masashi Go

Yoshiki Kamio

Toshiaki Akamatsu

Yuji Yamashita

Junichi Noba

Shuhei Noguchi

Tetsumasa Kawakami

Syuhei Noguchi

Ryosuke Hayashi

A fuel supply device includes a flange unit and a pump unit. The flange unit includes a flange main body for closing an opening formed in an upper wall of a fuel tank. The pump unit includes a joint member that is connected to the flange main body so that both components may be movable relative to each other in the vertical direction. The interval in the vertical direction between the flange main body and the joint member is restricted from going below a minimum vertical interval. The minimum interval occurs when a stand-off portion provided as part of the flange main body and a connecting plate portion provided as part of the joint member come into mutual contact with each other and abut each other in the vertical direction.

Fuel supply device

A fuel supply device is insertable into a fuel tank through an opening formed in an upper wall of the fuel tank in an insertion direction. The fuel supply device includes a flange unit and a pump unit coupled to the flange unit. The pump unit includes a guide member extending in the insertion direction. The guide member is configured to abut on an opening periphery so as to guide the pump unit when the pump unit is inserted into the fuel tank. A guide surface of the guide member includes a concave surface.

A cover for a fuel tank includes a flange unit configured to close an opening of the fuel tank and a joint member movably coupled to the flange unit. The joint member is configured to move in an upward/downward direction relative to the flange unit. Two side tubular portions extend from the flange unit in the upward/downward direction and are positioned side-by-side. Column portions extend in the upward/downward direction from the joint member. The column portions are moveably disposed in the side tubular portions. The column portions are configured to move in the upward/downward direction relative to the side tubular portions. The side tubular portions are connected to each other via a rear side wall and a front side wall of a center tubular portion disposed between the side tubular portions.

Cover for fuel tank

A fuel tank unit includes a lid member configured to close an opening formed on a fuel tank. The fuel tank also includes an upper unit attached to the lid member and including a combination valve device configured to be introduced into the fuel tank via the opening formed on the fuel tank and configured to function as an evaporated fuel control valve and a full limit valve. The lid member includes a cylindrical protective case configured to protect the combination valve device of the upper unit when the combination valve device is introduced into the fuel tank via the opening. The protective case is configured to entirely enclose an outer circumferential surface of the combination valve device with a space therebetween.

Fuel tank units

A fuel tank cover () is provided with a flange unit () closing an opening of a fuel tank, and a joint member () configured to be connected to the flange unit () movably in the upward/downward direction. The flange unit () includes a side tubular portion () extending in the upward/downward direction. The joint member () includes a columnar portion () extending in the upward/downward direction. The columnar portion () is inserted into the side tubular portion () movably in the upward/downward direction. A metal retainer () is provided to cover an outer circumferential surface of the columnar portion ().

A fuel filter device includes a bag-shaped filter member filtering fuel that is drawn into a fuel pump, an inner frame member retaining the filter member in an expanded state, and a mounting member connected to the inner frame member and serving to communicate an internal space of the filter member with an outside. A valve chamber is defined by the inner frame member and the mounting member, and a check valve serving to prevent backflow of fuel is disposed in the valve chamber. The check valve includes a flat-plate shaped valve body having elasticity. The check valve opens against its weight when the fuel pump is operated, and the check valve closes due to its weight when the operation of the fuel pump is stopped.

Fuel filter device

A cover for a fuel tank includes a flange unit configured to close an opening of the fuel tank and a joint member connected to the flange unit. The joint member is movable in an upward/downward direction. The flange unit includes a side tubular portion extending in the upward/downward direction. The joint member includes a support column portion extending in the upward/downward direction. The support column portion is movably disposed in the side tubular portion so as to be movable in the upward/downward direction. The support column portion is connected to the side tubular portion by a snap-fit so as to be movable and suspendable in the upward/downward direction.

A fuel supply device includes a fuel pump, a pump case, a cap, an O-ring, and a connection assembly. The pump case includes a case main body configured to receive the fuel pump and a discharge port connector. The cap includes a suction port connector. The O-ring is interposed between a fuel discharge port of the fuel pump and discharge port connector. The connection assembly includes a plurality of engagement projections and a plurality of engagement pieces configured to mate and engage with the engagement projections. The fuel discharge port of the fuel pump is configured to reach the O-ring coupled to the discharge port connector of the pump case simultaneous with the engagement between the engagement projections and the engagement pieces when the fuel suction port of the fuel pump and the suction port connector of the cap are connected together.

When a fuel tank is inclined at a negative slope and tilted to the right side, it may be tilted such that a position of a mesh member is relatively higher than a position of a vapor outlet of a vapor outlet passage. In this case, air may enter into a leak passage from an outlet port such that interfacial tension is generated in the mesh member. The interface between fuel and air is present at the mesh member, and the interfacial tension generated at the interface serves to prevent air from entering into a discharge pipe.

A flange main body as a cover member for a fuel tank includes a cover plate for closing an opening of the fuel tank, an accommodating tubular portion formed as part of the cover plate so as to extend through the plate in a plate thickness direction, and a rib formed at the cover plate. The accommodating tubular portion and the rib are formed to be non-contiguous.

Cover member for fuel tank

A pressure regulating valve includes a casing, a holder, a fixed valve, a movable valve, a spring member, a diaphragm, and a filter. The filter is configured to filter fluid flowing from a flow inlet of the casing into a pressure chamber. The filter includes a filtering part for filtering fluid and a holding part including a frame part for holding an outer periphery of the filtering part. An alignment structure configured to align the holding part at a predetermined position is provided between the holding part of the filter and the holder, or between the holding part of the filter and the casing.

Pressure regulating valve

A fuel supply device includes a fuel pump for delivering fuel within the fuel tank to the outside and a sub-tank having a temporary storage region capable of temporarily storing the fuel. The sub-tank includes an inflow opening to allow the fuel to flow into the sub-tank under its own weight. The temporary storage region includes a top part positioned above the inflow opening.

Fuel supply devices

A fuel supply device includes a pump unit with a fuel pump that has a rotary body rotating about a rotary shaft and a load receiving portion, configured to receive the load of the pump unit. A connecting portion is provided for connecting the pump unit to the load receiving portion such that the pump unit is suspended by the load receiving portion. The connecting portion is disposed so as to extend across a virtual plane which is perpendicular to the rotary shaft for the rotary body of the fuel pump and passes through the center of gravity of the pump unit.

A fuel supply device includes a flange unit configured to be attached to an upper wall of a fuel tank to close an opening of the fuel tank, a pump unit configured to be disposed within the fuel tank, and a coupling mechanism moveably coupling the pump unit to the flange unit in a vertically slidable manner. The coupling mechanism includes a fixed-side rail member having a rail portion extending vertically from the flange unit, and a movable-side rail member having a channel-groove shaped rail groove extending from the pump unit. The channel-groove shaped rail groove is slidably engaged with the rail portion of the fixed-side rail member. A recess having a semi-circular cross section is formed at a corner of the rail groove of the movable-side rail member.

A fuel supply device includes a cover member which is attached to an opening of a fuel tank, a pump unit comprising a pump, and a connecting portion for connecting the cover member and the pump unit. The pump unit is connected to the connecting portion so as to be relatively movable to the cover member. When the fuel supply device is attached to the fuel tank, an engagement portion provided at a lower portion of the pump unit abuts the connecting portion such that via the engagement portion the connecting portion presses the pump unit against the fuel tank.

Growing community of inventors

Nagoya, Japan

Kensuke Niwa