Overhead fuel pump assembly of motorcycle

Abstract

The utility model discloses an overhead fuel pump assembly of a motorcycle, which comprises a pump body, the top of the pump body is provided with a flange cover, the flange cover comprises a cylindrical body and a disc coaxially fixed on the top of the cylindrical body, the outer diameter of the disc is larger than that of the cylindrical body, the flange cover is arranged below the disc, the outer side of the cylindrical body is provided with a sealing gasket, and the sealing gasket is arranged on the outer side of the cylindrical body. The cross section of the sealing gasket is in an inverted L shape, the lower portion of the sealing gasket is a radial sealing ring, and the upper portion of the sealing gasket is a plane sealing ring protruding outwards in the radial direction of the radial sealing ring. The side face radial sealing is achieved through the flange cover and the sealing gasket, so that the problem that the flatness of the sealing face of the plastic oil tank is poor is solved, meanwhile, plane sealing is achieved through the upper sealing protrusion and the lower sealing protrusion, and the sealing effect is further improved.

Description

Technical Field

[0001] The utility model relates to a fuel pump assembly mounted on a motorcycle. Background Art

[0002] The electric fuel pump assembly is one of the basic components of the fuel supply system of the electronic fuel injection system. It is usually placed in the motorcycle's fuel tank. Its function is to extract fuel from the fuel tank, pressurize it, and then deliver it to the motorcycle's engine for fuel supply.

[0003] At present, the fuel tanks of some motorcycles are made of plastic. The plastic fuel tanks have shrinkage deformation during blow molding, which makes the sealing surface flatness poor, which will cause leakage at the oil pump seal during use. Utility Model Content

[0004] In view of the above problems, the utility model provides a motorcycle mounted fuel pump assembly, which effectively solves the problems pointed out in the background technology.

[0005] The technical solution adopted by the utility model is:

[0006] A motorcycle top fuel pump assembly comprises a pump body, wherein a flange cover is arranged on the top of the pump body, wherein the flange cover comprises a cylindrical body and a disc coaxially fixed on the top of the cylindrical body, wherein the outer diameter of the disc is larger than that of the cylindrical body, wherein a sealing gasket is arranged below the disc and outside the cylindrical body of the flange cover, wherein the cross section of the sealing gasket is in an inverted L-shape, wherein the lower part is a radial sealing ring, and the upper part is a planar sealing ring protruding radially outward from the radial sealing ring.

[0007] Preferably, an inner sealing protrusion that protrudes obliquely downward is fixed to the inner side of the radial sealing ring, and an outer sealing protrusion that protrudes obliquely downward is fixed to the outer side.

[0008] The inner sealing protrusion abuts against the cylindrical body when sealing to achieve sealing of the outer side of the cylindrical body, and the outer sealing protrusion abuts against the oil tank when sealing to achieve sealing with the oil tank.

[0009] Preferably, an upper sealing protrusion protruding upward is fixed to the top of the planar sealing ring, and a lower sealing protrusion protruding downward is fixed to the bottom.

[0010] The upper sealing protrusion abuts against the bottom of the disc during sealing to achieve sealing of the bottom of the disc, and the lower sealing protrusion abuts against the oil tank to achieve sealing with the oil tank.

[0011] Preferably, the radial sealing ring, the planar sealing ring, the inner sealing protrusion, the outer sealing protrusion, the upper sealing protrusion and the lower sealing protrusion are integrally formed.

[0012] The one-piece molded gasket has better sealing performance and is low in cost.

[0013] Preferably, the pump body is fixed with an oil storage barrel at the bottom oil inlet end of the pump core, and a plurality of oil inlets are opened on the bottom side of the oil storage barrel.

[0014] The utility model provides an oil storage barrel so that the vehicle can still effectively store fuel when the fuel in the fuel tank is extremely low, and the vehicle can still maintain fuel supply under special working conditions such as emergency braking, rapid acceleration, left tilt, right tilt, etc.

[0015] The utility model realizes side radial sealing by adopting flange cover and sealing gasket, thereby solving the problem of poor flatness of the sealing surface of the plastic oil tank. At the same time, the utility model also realizes plane sealing by upper sealing protrusion and lower sealing protrusion, further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a side structural schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 AA section view in;

[0019] Figure 4 This is a structural schematic diagram of the utility model hidden sealing pad valve;

[0020] Figure 5 is a schematic diagram of the structure of the sealing gasket;

[0021] Figure 6 A cross-sectional view of the gasket. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0029] like Figure 1-6As shown, a motorcycle top fuel pump assembly includes a pump body 1, a flange cover 2 is provided on the top of the pump body 1, the flange cover 2 includes a cylindrical body 21, and a disc 22 coaxially fixed on the top of the cylindrical body 21, and the outer diameter of the disc 22 is larger than that of the cylindrical body 21, and the flange cover 2 is provided with a sealing gasket 3 below the disc 22 and outside the cylindrical body 21, and the cross section of the sealing gasket 3 is an inverted L-shape, the lower part is a radial sealing ring 31, and the upper part is a planar sealing ring 32 radially protruding outward from the radial sealing ring 31.

[0030] An inner sealing protrusion 311 that protrudes obliquely downward is fixed to the inner side of the radial sealing ring 31 , and an outer sealing protrusion 312 that protrudes obliquely downward is fixed to the outer side.

[0031] An upper sealing protrusion 321 protruding upward is fixed on the top of the planar sealing ring 32, and a lower sealing protrusion 322 protruding downward is fixed on the bottom.

[0032] The radial sealing ring 31 , the planar sealing ring 32 , the inner sealing protrusion 311 , the outer sealing protrusion 312 , the upper sealing protrusion 321 and the lower sealing protrusion 322 are integrally formed.

[0033] The pump body 1 is fixed with an oil storage barrel 4 at the bottom oil inlet end of the pump core, and a plurality of oil inlet ports 41 are opened on the bottom side of the oil storage barrel 4 .

[0034] The utility model sets the cross section of the sealing gasket 3 to be L-shaped and matches the flange cover 2, so that the radial sealing ring 31 is mainly used for sealing, avoiding the plane sealing surface with poor flatness of the oil tank, and playing a good sealing role. At the same time, the plane sealing ring 32 is used for auxiliary sealing, thus forming a double seal with a better sealing effect.

[0035] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A motorcycle mounted fuel pump assembly, characterized in that: The invention comprises a pump body (1), wherein a flange cover (2) is provided on the top of the pump body (1), wherein the flange cover (2) comprises a cylindrical body (21) and a disc (22) coaxially fixed on the top of the cylindrical body (21), wherein the outer diameter of the disc (22) is larger than that of the cylindrical body (21), and the flange cover (2) is provided with a sealing gasket (3) below the disc (22) and outside the cylindrical body (21), wherein the cross section of the sealing gasket (3) is in an inverted L-shape, wherein the lower part is a radial sealing ring (31), and the upper part is a planar sealing ring (32) protruding radially outward from the radial sealing ring (31).

2. A motorcycle top-mounted fuel pump assembly according to claim 1, characterized in that: An inner sealing protrusion (311) that protrudes obliquely downward is fixed on the inner side of the radial sealing ring (31), and an outer sealing protrusion (312) that protrudes obliquely downward is fixed on the outer side.

3. A motorcycle top-mounted fuel pump assembly according to claim 2, characterized in that: An upper sealing protrusion (321) protruding upward is fixed on the top of the planar sealing ring (32), and a lower sealing protrusion (322) protruding downward is fixed on the bottom.

4. A motorcycle top-mounted fuel pump assembly according to claim 3, characterized in that: The radial sealing ring (31), the planar sealing ring (32), the inner sealing protrusion (311), the outer sealing protrusion (312), the upper sealing protrusion (321) and the lower sealing protrusion (322) are integrally formed.

5. A motorcycle top-mounted fuel pump assembly according to claim 4, characterized in that: The pump body (1) is fixed with an oil storage barrel (4) at the bottom oil inlet end of the pump core, and a plurality of oil inlet ports (41) are provided on the bottom side of the oil storage barrel (4).

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