# US 2017/0282990 A1 · Structure for installing fuel pump in fuel tank

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- Number: US 2017/0282990 A1
- Document ID: US20170282990A1
- Status: Published application
- Kind: A1
- Application number: 15/461,005
- Filed: 2017-03-16
- Published: 2017-10-05
- Earliest claimed: 2016-03-31
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Takeji KAWAZUMI; Toshihisa NAGASHII
- Web page: https://patentgrep.com/patent/US20170282990A1

## CPC

- B62J 37/00: Arrangements of fuel supply lines, taps, or the like, on motor cycles or engine-assisted cycles
- B60K 15/03: Fuel tanks
- B62J 35/00: Fuel tanks specially adapted for motorcycles or engine-assisted cycles; Arrangements thereof (fuel tanks forming part of cycle frames B62K11/00; tanks in general B60K {; closure caps for fuel tanks B60K15/0406})
- F02M 37/0011: {Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor}
- F02M 37/103: {Mounting pumps on fuel tanks}
- B60K 2015/03243: {characterised by special pumps, the mounting thereof}
- B60Y 2200/12: Motorcycles, Trikes; Quads; Scooters
- B62J: CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY

## Abstract

In a structure for installing a fuel pump in a fuel tank, in which the fuel pump is attached to the fuel tank by clamping a flange portion of a pump case of the fuel pump between the fuel tank and a retainer fastened to the fuel tank, an interference portion is formed integrally with an inner peripheral edge of the retainer while being overhung inward in a radial direction, the interference portion being capable of interfering with any one of protruding portions when a relative position in a peripheral direction of the retainer with respect to the flange portion is set at a non-normal position, and a non-normal surface of opposite surfaces of the retainer is faced to the flange portion.

## Claims

### Claim 1

A structure for installing a fuel pump in a fuel tank, in which a pump case for the fuel pump is formed to include: a tubular portion having one end part thereof inserted into an insertion hole formed in the fuel tank; an end wall portion closing the one end part of the tubular portion while facing an outside of the fuel tank, and on which a plurality of protruding portions configuring a part of the fuel pump are protuberantly arranged; and an annular flange portion overhanging from the one end part of the tubular portion to a lateral side while being opposed to an outer surface of the fuel tank, and
a retainer clamping the flange portion between an outer surface of the fuel tank and the retainer surrounds the protruding portions and is fastened to the fuel tank,
wherein an interference portion is formed integrally with an inner peripheral edge of the retainer while being overhung inward in a radial direction, the interference portion being capable of interfering with any one of the protruding portions when a relative position in a peripheral direction of the retainer with respect to the flange portion is set at a non-normal position, and a non-normal surface of opposite surfaces of the retainer is faced to the flange portion.

### Claim 2 (depends on 1)

The structure for installing a fuel pump in a fuel tank according to claim 1,
wherein the protruding portions are respectively arranged in three areas of four areas formed by equiangularly quadrisecting the end wall portion, and
the interference portion is formed integrally with one position in the peripheral direction of the inner peripheral edge of the retainer so as to be arranged in the remaining area of the four areas when the relative position in the peripheral direction of the retainer with respect to the flange portion is set at the normal position, and the normal surface of the opposite surfaces of the retainer is faced to the flange portion.

### Claim 3 (depends on 2)

The structure for installing a fuel pump in a fuel tank according to claim 2, wherein in a projection view with respect to a plane perpendicular to an axis of the pump case, positions of the protruding portions are set in the end wall portion so that an imaginary circle passes over the plurality of protruding portions, the imaginary circle passing through a tip end part of the interference portion with a center position of the end wall portion as a center.

### Claim 4 (depends on 3)

The structure for installing a fuel pump in a fuel tank according to claim 3,
wherein one of the plurality of protruding portions is a delivery joint portion delivering fuel from the fuel pump, and
the remaining protruding portions are a pair of connector portions for achieving electric connection with the fuel pump.

### Claim 5 (depends on 1)

The structure for installing a fuel pump in a fuel tank according to claim 1, wherein a positioning device is provided between the retainer and at least one of the end wall portion and the flange portion, the positioning device determining the relative positions in the peripheral direction of the flange portion and the retainer so that the interference portion interferes with one of the plurality of protruding portions when the relative position in the peripheral direction of the retainer with respect to the flange portion is set at the non-normal position, and the non-normal surface of the opposite surfaces of the retainer is faced to the flange portion.

### Claim 6 (depends on 5)

The structure for installing a fuel pump in a fuel tank according to claim 5, wherein the positioning device is configured with a pair of positioning protrusions and a pair of locking portions, the pair of positioning protrusions being protuberantly provided on at least one of the end wall portion and the flange portion so as to be arranged on one diameter line, the pair of locking portions being provided on the retainer so as to be respectively engaged with the positioning protrusions.

### Claim 7 (depends on 4)

The structure for installing a fuel pump in a fuel tank according to claim 4, wherein a mark is provided on an outer surface of the fuel tank, the mark being matched with a direction in which the delivery joint portion is directed when the fuel pump is installed in the fuel tank in a normal relative position.

### Claim 8 (depends on 7)

The structure for installing a fuel pump in a fuel tank according to claim 7, wherein the retainer includes a positioning portion, the positioning portion being directed to the mark when the retainer is fastened to the fuel tank in a normal posture with respect to the fuel tank,

### Claim 9 (depends on 2)

The structure for installing a fuel pump in a fuel tank according to claim 2, wherein a positioning device is provided between the retainer and at least one of the end wall portion and the flange portion, the positioning device determining the relative positions in the peripheral direction of the flange portion and the retainer so that the interference portion interferes with one of the plurality of protruding portions when the relative position in the peripheral direction of the retainer with respect to the flange portion is set at the non-normal position, and the non-normal surface of the opposite surfaces of the retainer is faced to the flange portion.

### Claim 10 (depends on 3)

The structure for installing a fuel pump in a fuel tank according to claim 3, wherein a positioning device is provided between the retainer and at least one of the end wall portion and the flange portion, the positioning device determining the relative positions in the peripheral direction of the flange portion and the retainer so that the interference portion interferes with one of the plurality of protruding portions when the relative position in the peripheral direction of the retainer with respect to the flange portion is set at the non-normal position, and the non-normal surface of the opposite surfaces of the retainer is faced to the flange portion.

### Claim 11 (depends on 4)

The structure for installing a fuel pump in a fuel tank according to claim 4, wherein a positioning device is provided between the retainer and at least one of the end wall portion and the flange portion, the positioning device determining the relative positions in the peripheral direction of the flange portion and the retainer so that the interference portion interferes with one of the plurality of protruding portions when the relative position in the peripheral direction of the retainer with respect to the flange portion is set at the non-normal position, and the non-normal surface of the opposite surfaces of the retainer is faced to the flange portion.