Installation structure of fuel pump
A fuel pump and structure technology, which is applied to liquid fuel feeders, charging systems, engine components, etc., can solve the problems of circumferential deviation and uneven circumferential deformation of sealing parts.
Active Publication Date: 2012-08-29
HONDA MOTOR CO LTD
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AI Technical Summary
Problems solved by technology
[0004] However, the pump housing is made of synthetic resin, and the position of the claws in the axial direction of the cylindrical portion of the pump housing is prone to misalignment. In the structure in which the claws on the side of the pump case are engaged by means of locking pieces, when the deviation occurs, the ring-shaped sealing member applied between the pump case and the fuel tank may The load on the seal is uneven in the circumferential direction, so the deformation of the sealing part is deviated in the circumferential direction
Method used
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Embodiment Construction
[0040] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0041] Figure 1 to Figure 10 is a diagram showing an embodiment of the present invention, figure 1 It is the left side view of the automatic two-wheeler, figure 2 It is an exploded perspective view of a fuel tank and a pump assembly, image 3 It is a longitudinal sectional side view of the fuel tank with the pump assembly installed, Figure 4 is a longitudinal side view of the pump assembly, Figure 5 Yes image 3 The 5-5 line enlarged section view, Image 6 Yes Figure 5 The 6-6 line profile, Figure 7 is a side view of the main part of the pump housing, Figure 8 Yes Figure 7 The 8-8 line enlarged section view, Figure 9 Yes Figure 8 The 9-9 line profile, Figure 10 Yes Figure 5 A 10-10 line magnified profile.
[0042] First, in figure 1 Among them, the body frame F of the motorcycle is provided with a head tube 12 that can operably support the fro...
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The present invention provides an installation structure of a fuel pump, wherein a metallic fuel tank is provided with a pump insertion hole and a plurality of locking sheets, a pump casing at least having a barrel part inserted into the pump insertion hole and formed by cynthetic resin is provided with a plurality of claws in a projecting manner. By means of the rotation of the pump casing by a prescribed angle along a prescribed installation direction under a condition that the barrel part is inserted into the pump insertion hole, the plurality of claws are engaged with the plurality of locking sheets respectively, an annular sealing member which encloses the pump insertion hole is clamped between the fuel tank and the pump casing, wherein the distortion of the sealing member may be equalized in the circular direction. An adjusting part (57c) is formed on each claw (57), when each claw (57) and the pump casing (46) where the barrel part (48) is inserted into the pump insertion hole (44) rotate by the prescribed angle along the installation direction (58) to be engaged with the corresponding locking sheet (56), at least a part of the adjusting part (57c) is removed by the lockingsheets (56).
Description
technical field [0001] The present invention relates to a mounting structure of a fuel pump, wherein a pump insertion hole is provided on the wall of a metal fuel tank and a plurality of locking pieces are spaced apart in the circumferential direction of the pump insertion hole, and at least The fuel pump that absorbs and discharges the fuel in the fuel tank is accommodated in the cylindrical part of the pump insertion hole, and a plurality of claws protrude from the pump housing formed of synthetic resin. The claws are inserted into the cylindrical part. When the pump is inserted into the hole, the locking pieces can be arranged at positions spaced apart from each other in the circumferential direction of the cylindrical portion. The pump casing can be rotated by a predetermined angle in a predetermined installation direction, so that the plurality of claws can be engaged with the respective locking pieces from the axial inner side of the pump insertion hole, and the annular ...
Claims
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IPC IPC(8): F02M37/10
Inventor 上野正树河野静雄
Owner HONDA MOTOR CO LTD