Seal structure of seal cover

Abstract

To provide a seal structure of a seal cover capable of preventing intrusion and adhesion of mud and water by eliminating a gap between the seal cover and an opening edge part of an insertion hole in an inner panel.SOLUTION: An outer panel 1 and an inner panel 2 are arranged vertically with a fixed gap between opening edge parts 1b, 2b that form each insertion hole, and a seal cover 11 has an inner peripheral part 12 that has a seal part 12a elastically contacting an outer peripheral surface of a fuel inlet pipe. An outer peripheral part 13 has an annular mounting groove 17 that is fitted radially into an opening edge part of an inner panel, and has a panel seal 16 that is in contact from above near an opening edge part of an outer panel. An upper opening edge of the mounting groove has a first seal lip 18 that elastically contacts an upper surface of the opening edge part of the inner panel and covers the upper opening edge.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a seal structure of a seal cover that covers the outer periphery of a fuel inlet pipe provided at a fuel inlet portion through which fuel is injected into an automobile, sealing it from the outside. [Background technology]

[0002] A conventional seal structure of a seal cover that seals between a fuel inlet pipe and the outside is known from the following Patent Document 1. The following conventional seal structure of the seal cover is similar to the seal cover in Patent Document 1.

[0003] FIG. 1 is a side view of an automobile to which the sealing structures of the conventional and present seal covers are applied, FIG. 12 is a vertical cross-sectional view showing the sealing structure of the conventional seal cover arranged in a fuel supply port, and FIG. 13 is a vertical cross-sectional view showing the sealing structure of the conventional seal cover attached to a fuel inlet pipe.

[0004] As shown in Figures 1, 12 and 13, the fuel supply section 02 of the automobile 01 has insertion holes 1a and 2a formed continuously in an outer panel 1 and an inner panel 2, which are body panels that constitute a wheel house 03 on the rear side of the vehicle body, and a fuel inlet pipe 3 is inserted and arranged in each of these insertion holes 1a and 2a. The lower end of this fuel inlet pipe 3 is connected to a fuel tank (not shown), while a fuel cap 4 is screwed onto a convex male thread 3a formed on the inner peripheral surface of the upper end via a female thread 4a. A seal cover 5 is attached between the outer peripheral surface 3b of the fuel inlet pipe 3 and the opening edge portions 1b, 2b of the outer panel 1 and inner panel 2 that form the insertion holes 1a, 2a.

[0005] The outer panel 1 and the inner panel 2 are arranged so that the flange-shaped opening edge portions 1b, 2b forming the insertion holes 1a, 2a are overlapped vertically with a certain gap between them, and the inner peripheral edge of the opening edge portion 1b of the outer panel 1, which forms the insertion hole 1a, extends radially inward, that is, toward the fuel inlet pipe 3. On the other hand, the inner peripheral edge of the opening edge portion 2b of the inner panel 2, which forms the insertion hole 2a, is formed shorter than the inner peripheral edge of the opening edge portion 1b of the outer panel 1. In other words, the opening diameter of the insertion hole 1a in the outer panel 1 is formed smaller than the opening diameter of the insertion hole 2a in the inner panel 2.

[0006] The seal cover 5 is made of rubber and is cylindrical, has a longitudinal cross section formed into an irregular shape, and has an outer peripheral portion 6 and an inner peripheral portion 7. The outer peripheral portion 6 has a thick portion 6a at its upper end, which is formed with a disk-shaped mounting groove 6b into which the opening edge portion 1b of the outer panel 1 is fitted from the radial direction to hold the opening edge portion 1b. The inner peripheral portion 7 is integrally provided with a seal portion 7a at its tip end, which has a substantially circular cross section and abuts against the outer peripheral surface 3b of the fuel inlet pipe 3.

[0007] The seal cover 5 is attached to the outer panel 1 by fitting the attachment groove 6b of the outer peripheral portion 6 into the opening edge portion 1b of the outer panel 1 while the seal portion 7a of the inner peripheral portion 7 abuts against the outer peripheral surface 3b of the fuel inlet pipe 3 from the outside of the vehicle body. In this attached state, the seal cover 5 seals between the outer peripheral surface 3b of the fuel inlet pipe 3 and the opening edge portions 1b, 2b (each insertion hole 1a, 2a) of the panels 1, 2. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-241286 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in the conventional technology, although the seal cover 5 is attached by radially fitting the mounting groove 6b of the outer peripheral portion 6 into the opening edge portion 1b of the outer panel 1, it has no direct relationship with the opening edge portion 2b of the inner panel 2, and this opening edge portion 2b and the outer peripheral portion 6 face each other with a circular gap S in the radial direction.

[0010] As a result, mud and water kicked up by the tires while the vehicle is running can seep through the gap S into the gap between the opening edges 1b, 2b of the panels 1, 2, and the mud can adhere to the periphery of the gap S and harden. This can result in rust forming on the opening edge 1b of the insertion hole 1a in the outer panel 1 and the opening edge 2b of the insertion hole 2a in the inner panel 2, reducing durability.

[0011] The present invention was devised in consideration of the technical problems with the sealing structure of the conventional seal cover, and aims to provide a sealing structure of a seal cover that can prevent the intrusion and adhesion of mud and water by eliminating the gap between the seal cover and the opening edge of the insertion hole in the inner panel. [Means for solving the problem]

[0012] The invention described in claim 1 of the present application is a sealing structure of a cylindrical seal cover that seals between an outer peripheral surface of a fuel inlet pipe provided at a fuel inlet portion for injecting fuel into a fuel tank of an automobile and an insertion hole formed in an outer panel and an inner panel of a vehicle body, through which the fuel inlet pipe is inserted, the outer panel and the inner panel are arranged in a vertical direction with a certain gap between their opening edge portions forming the insertion hole, and the opening edge portion of the inner panel is arranged below the opening edge portion of the outer panel, the opening edge portion of the inner panel is formed such that an inner peripheral edge of the insertion hole extends in a direction toward the fuel inlet pipe, while the opening edge portion of the outer panel is formed such that the inner peripheral edge of the insertion hole is shorter than the inner peripheral edge of the opening edge portion of the inner panel, the seal cover has an inner peripheral portion having a seal portion that elastically contacts an outer peripheral surface of the fuel inlet pipe, and an outer peripheral portion that is connected to edge portions of openings of the outer panel and the inner panel, the outer peripheral portion has an annular mounting groove formed therein that is fitted radially into the opening edge portion of the inner panel, and a disk-shaped panel seal that abuts against the opening edge portion of the outer panel from above, The mounting groove is characterized by having a first seal lip at an upper opening edge thereof, the first seal lip being in elastic contact with the upper surface of the opening edge portion of the inner panel and covering the upper opening edge.

[0013] The invention described in claim 2 of the present application is a sealing structure of a cylindrical seal cover that seals between an outer peripheral surface of a fuel inlet pipe provided at a fuel inlet portion for injecting fuel into a fuel tank of an automobile and an insertion hole formed in an outer panel and an inner panel of a vehicle body and through which the fuel inlet pipe is inserted, the outer panel and the inner panel are arranged in a vertical direction with a certain gap between their opening edge portions forming the insertion hole, and the opening edge portion of the inner panel is arranged below the opening edge portion of the outer panel, the opening edge portion of the inner panel is formed such that an inner peripheral edge of the insertion hole extends in a direction toward the fuel inlet pipe, while the opening edge portion of the outer panel is formed such that the inner peripheral edge of the insertion hole is shorter than the inner peripheral edge of the opening edge portion of the inner panel, the seal cover has an inner peripheral portion having a seal portion that elastically contacts an outer peripheral surface of the fuel inlet pipe, and an outer peripheral portion that is connected to edge portions of openings of the outer panel and the inner panel, the outer peripheral portion has an annular mounting groove formed therein that is fitted radially into the opening edge portion of the inner panel, and a disk-shaped panel seal that abuts against the opening edge portion of the outer panel from above, The mounting groove is characterized by having a second seal lip at the lower opening edge thereof, which covers the lower opening edge while elastically contacting the lower surface of the opening edge portion of the inner panel. [Effects of the Invention]

[0014] According to the present invention, the gap between the seal cover and the opening edge of the insertion hole in the inner panel is eliminated, and the seal cover seals each opening edge of each insertion hole in the outer panel and inner panel, thereby preventing the intrusion and adhesion of mud and water.

[0015] In particular, with the first seal lip and second seal lip covering the upper and lower opening edges of the mounting groove, they seal the opening edges of the insertion holes in the outer panel and inner panel, respectively, thereby further enhancing the sealing function and making it possible to more reliably prevent the intrusion and adhesion of mud and water. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a side view of an automobile to which the seal structures of the present invention and a conventional seal cover are applied; [Figure 2] 1 is a perspective view of a seal structure of a seal cover according to the present invention, as viewed from the outside of a fuel supply port. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] 1 is a perspective view showing a state in which a seal cover is attached to a fuel inlet pipe according to the present invention. FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along line BB in FIG. 4. [Figure 6] 1 is a vertical cross-sectional view showing a first embodiment of a seal structure for a seal cover according to the present invention. [Figure 7] FIG. 7 is an enlarged cross-sectional view of a main part of the seal structure of the seal cover shown in FIG. 6. [Figure 8] 5 is a longitudinal cross-sectional view of the seal structure of the seal cover of the present embodiment taken along line BB in FIG. 4. [Figure 9] 10 is an explanatory diagram showing that the leading end of the panel seal used in this embodiment elastically deforms to absorb manufacturing errors of the outer panel, etc. FIG. [Figure 10] FIG. 5 is an enlarged cross-sectional view of a main portion showing a second embodiment of the seal structure of the seal cover according to the present invention. [Figure 11] FIG. 10 is an enlarged cross-sectional view of a main portion showing a third embodiment of the seal structure of the seal cover according to the present invention. [Figure 12] FIG. 10 is a vertical cross-sectional view showing a sealing structure of a conventional seal cover disposed in a fuel supply port. [Figure 13] FIG. 10 is a vertical cross-sectional view showing the sealing structure of a conventional seal cover attached to a fuel inlet pipe. DETAILED DESCRIPTION OF THE INVENTION

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a seal structure for a seal cover according to the present invention will be described in detail with reference to the drawings.

[0018] Figure 2 is a perspective view of the sealing structure of the seal cover of the present invention as seen from outside the fuel supply port, Figure 3 is a cross-sectional view taken along line AA in Figure 2, Figure 4 is a perspective view showing the state in which the seal cover is attached to the fuel inlet pipe used in the present invention, Figure 5 is a cross-sectional view taken along line BB in Figure 4, Figure 6 is a vertical cross-sectional view showing a first embodiment of the sealing structure of the seal cover of the present invention, Figure 7 is an enlarged cross-sectional view of a main part of the sealing structure of the seal cover shown in Figure 6, Figure 8 is a vertical cross-sectional view of the sealing structure of the seal cover of this embodiment taken along line BB in Figure 4, and Figure 9 is an explanatory view showing that the tip of the panel seal used in this embodiment elastically deforms to absorb manufacturing errors in the outer panel, etc.

[0019] 1 to 3, the fuel supply unit 02 of the automobile 01 has insertion holes 1a, 2a formed continuously through the outer panel 1 and inner panel 2, which are body panels constituting the wheel house 03 on the rear side of the vehicle body, and a fuel inlet pipe 3 is inserted into each of the insertion holes 1a, 2a. The lower end of the fuel inlet pipe 3 is connected to a fuel tank (not shown), while the upper end of the fuel inlet pipe 3 has a circular convex male thread portion 3a formed on the inner peripheral surface thereof, and a fuel cap 4 is screwed onto the male thread portion 3a via a helical female thread portion 4a.

[0020] As shown in Figures 3, 6, and 7, the opening edge portions 1b, 2b of the outer panel 1 and the inner panel 2 that form the insertion holes 1a, 2a are arranged in the vertical direction with a certain gap between them, and the opening edge portion 2b of the inner panel 2 is arranged below the opening edge portion 1b of the outer panel 1.

[0021] The inner peripheral edge of the opening edge 2b of the inner panel 2 extends in the direction of the fuel inlet pipe 3, while the inner peripheral edge of the opening edge 1b of the outer panel 1 is formed to be shorter than the inner peripheral edge of the opening edge 2b of the inner panel 2. In other words, the opening diameter D of the insertion hole 2a of the inner panel 2 is formed to be smaller than the opening diameter D1 of the insertion hole 1a of the outer panel 1.

[0022] A cylindrical seal cover 11 is attached between the outer peripheral surface 3b of the fuel inlet pipe 3 and the opening edge portions 1b, 2b of the outer panel 1 and the inner panel 2 that form the insertion holes 1a, 2a.

[0023] As shown in Figures 3 and 5 to 7, the seal cover 11 is integrally formed from a rubber material and has an irregular vertical cross-sectional shape. It has an inner peripheral portion 12 provided on the fuel inlet pipe 3 side and an outer peripheral portion 13 provided on the insertion hole 1a, 2a side of each panel 1, 2.

[0024] The inner peripheral portion 12 is integrally provided with a seal portion 12a having a substantially circular cross section, the tip portion 12b of which abuts against the outer peripheral surface 3b of the fuel inlet pipe 3, on the inner peripheral side.

[0025] The outer peripheral portion 13 has a base end portion 14 that rises upward from the inner peripheral portion 12 side, a thick portion 15 provided at the upper end of the base end portion 14, and a panel seal 16 provided at the upper end of the thick portion 15.

[0026] The base end portion 14 is formed in an irregular cylindrical shape and is formed to surround the outer periphery of the fuel inlet pipe 3. The thick portion 15 has a mounting groove 17 formed on its outer periphery into which the opening edge portion 2b of the inner panel 2, i.e., the inner periphery of the insertion hole 2a, is fitted from the radial direction.

[0027] 7, the mounting groove 17 is formed in the shape of a thin disk into which the opening edge 2b of the inner panel 2 can be fitted with a predetermined frictional resistance. A first seal lip 18 is integrally provided on the upper opening edge of the mounting groove 17, and elastically contacts with the upper surface of the opening edge 2b of the inner panel 2 when fitted into the mounting groove 17 to form a seal.

[0028] The panel seal 16 is formed in a disk shape and has an inner circumferential base portion 16a and a flange-like tip portion 16b that protrudes radially outward from the base portion 16a. The base portion 16a is separated by a certain gap S1 from the opening edge portion 1b (the inner circumferential edge of the insertion hole 1a) of the outer panel 1 via the thick portion 15. The tip portion 16b is bent downward in a generally L-shape, and its tip edge elastically contacts the upper surface of the opening edge portion 1b of the outer panel 1 to form a seal, and is provided so as to be elastically deformable in the vertical direction with the base portion 16a as a fulcrum.

[0029] In addition, as shown in Figures 2 and 8, this panel seal 16 has a drain hole 19 formed on its circumferential lower side, that is, in the location that will be in the lower position when the seal cover 11 is attached to the opening edge portion 2b of the inner panel 2 via the attachment groove 17. As shown by the arrow in Figure 8, this drain hole 19 is designed to discharge to the outside water, for example, car wash water that has entered between the upper surface of the opening edge portion 1b of the upper outer panel 1 and the tip edge of the tip portion 16b of the panel seal 16 and has traveled downward along the outer peripheral surface of the base portion 16a and the first seal lip 18.

[0030] 2 and 3, the seal cover 11 is provided with a guide piece 20 integrally at the lower circumferential portion of the outer circumferential portion 13. The guide piece 20 is formed in a tongue-like shape and protrudes axially outward from the front end face of the outer circumferential portion 13, and is designed to guide and discharge water and other substances that splash on the front side of the seal cover 11 to the outside.

[0031] The seal cover 11 is attached to the inner panel 2 by fitting the mounting groove 17 of the outer peripheral portion 3b into the opening edge portion 2b of the inner panel 2 while the seal portion 12a of the inner peripheral portion 12 abuts against the outer peripheral surface 3b of the fuel inlet pipe 3 from the outside of the vehicle body. In this attached state, the seal cover 11 seals between the outer peripheral surface 3b of the fuel inlet pipe 3 and the opening edge portions 1b, 2b of the panels 1, 2. [Functions and Effects of the Seal Structure of the Seal Cover of the Present Embodiment] As described above, according to the sealing structure of the seal cover of this embodiment, the mounting groove 17 of the seal cover 11 fits radially into the opening edge portion 2b of the inner panel 2, thereby eliminating the gap between the opening edge portion 2b (the inner peripheral edge of the insertion hole 2a) and the seal cover 11.

[0032] Therefore, it is possible to prevent mud, water, etc. kicked up by the tires while the vehicle is running from entering between the opening edge portions 1b, 2b of the inner panel 2 and the outer panel 1, or preventing the mud, etc. from adhering, as in the conventional technology described above. As a result, it is possible to suppress the occurrence of rust on the opening edge portions 1b, 2b of the outer panel 1 and the inner panel 2, improving durability.

[0033] Moreover, the panel seal 16 of the seal cover 11 has its tip 16b elastically contacting the upper surface of the opening edge 1b of the outer panel 1 to exert its sealing function, and is therefore able to seal both the opening edge 1b of the outer panel 1 and the opening edge 2b of the inner panel 2. This further improves the sealing performance of the opening edges 1b, 2b of the outer panel 1 and the inner panel 2, making it possible to prevent the intrusion of water, such as car wash water, and this also makes it possible to sufficiently prevent rust from forming on the opening edges 1b, 2b.

[0034] Furthermore, in this embodiment, the provision of the first seal lip 18 on the upper opening edge of the mounting groove 17 of the seal cover 11 improves the sealing performance within the mounting groove 17. That is, as described above, water that has entered the interior between the leading end 16b of the panel seal 16 of the seal cover 11 and the opening edge 1b of the outer panel 1 is quickly guided along the outer periphery of the first seal lip 18 toward the drain hole 19, thereby preventing it from entering the mounting groove 17. In other words, water that has entered between the leading end 16b of the panel seal 16 and the opening edge 1b of the outer panel 1 can be quickly drained to the outside through the drain hole 19 without accumulating inside. This prevents rust from forming on the opening edge portions 1b, 2b of the outer panel 1 and the inner panel 2.

[0035] Furthermore, the panel seal 16 is formed so that the tip end 16b can elastically deform in the vertical direction via the base 16a. Therefore, even if the position of the opening edge 1b of the outer panel 1 is displaced vertically due to manufacturing errors or dimensional errors, as shown in Fig. 9, the tip end 16b can elastically deform and absorb these errors. In other words, even if the position of the opening edge 1b is displaced, the upper surface is always sealed by the panel seal 16, so the occurrence of rust or the like on the upper surface of the opening edge 1b can be suppressed. Furthermore, the degree of freedom in manufacturing the outer panel 1 is increased, improving manufacturing workability. Second Embodiment FIG. 10 shows a second embodiment of the present invention, which has the same basic configuration as the first embodiment, but in which the first seal lip 18 is eliminated and an annular second seal lip 21 is integrally provided on the lower opening edge of the mounting groove 17 of the seal cover 11.

[0036] This second seal lip 21 is provided at a position opposite to the first seal lip 18 in the first embodiment, and when fitted into the mounting groove 17, its tip elastically contacts the underside of the opening edge portion 2b of the inner panel 2, thereby covering and sealing the mounting groove 17.

[0037] Therefore, as described above, the second seal lip 21 can effectively prevent mud, water, and the like that are kicked up by the tire while the vehicle is running from entering through the lower opening edge of the mounting groove 17. This makes it possible to suppress rusting of the inner peripheral edge of the insertion hole 2a of the opening edge portion 2b of the inner panel 2, and the like. Third Embodiment FIG. 11 shows a third embodiment of the present invention, in which two seal lips, the first seal lip 18 of the first embodiment and the second seal lip 21 of the second embodiment, are provided on each of the upper and lower opening edges of the mounting groove 17 of the seal cover 11.

[0038] Therefore, according to this embodiment, the upper and lower opening edges of the mounting groove 17 are sealed by the first seal lip 18 and the second seal lip 21, respectively, which makes it possible to more effectively prevent water and mud from entering the opening edge 2b of the inner panel 2 and the inner peripheral edge of the insertion hole 2a. As a result, rust on the opening edge 2b and the like can be further prevented, further improving durability.

[0039] As the sealing structure of the seal cover based on the embodiment described above, for example, the following aspects are conceivable.

[0040] That is, a preferred embodiment of the seal structure of the seal cover according to the present invention is a seal structure of a cylindrical seal cover that seals between an outer peripheral surface of a fuel inlet pipe provided in a fuel inlet portion for injecting fuel into a fuel tank of an automobile and an insertion hole formed in an outer panel and an inner panel of a vehicle body and through which the fuel inlet pipe is inserted, the outer panel and the inner panel are arranged in a vertical direction with a certain gap between their flange-shaped opening edge portions that form the insertion hole, and the opening edge portion of the inner panel is arranged below the opening edge portion of the outer panel, a leading edge of the opening edge portion of the inner panel extends in a direction toward the fuel inlet pipe, while a leading edge of the opening edge portion of the outer panel is formed to be shorter than a leading edge of the opening edge portion of the inner panel, the seal cover has an inner peripheral portion having a seal portion that elastically contacts an outer peripheral surface of the fuel inlet pipe, and an outer peripheral portion that is connected to edge portions of openings of the outer panel and the inner panel, The outer periphery is characterized by having a circular mounting groove formed therein that fits radially into the opening edge of the inner panel, and also having a disk-shaped panel seal that abuts from above near the opening edge of the outer panel.

[0041] According to this invention, it is possible to eliminate gaps between the seal cover and the opening edges of the inner panel, and the seal cover can seal the opening edges of the insertion holes in both the outer panel and the inner panel, thereby suppressing the intrusion and adhesion of mud and water between the insertion holes and the opening edges of the outer panel and the inner panel, and sufficiently preventing rust from occurring on the opening edges, etc.

[0042] More preferably, the mounting groove has a first seal lip at an upper opening edge thereof, the first seal lip being in elastic contact with the upper surface of the opening edge portion of the inner panel and covering the upper opening edge.

[0043] According to this invention, the first seal lip provided on the upper opening edge of the mounting groove improves the sealing performance within the mounting groove. That is, water that enters the mounting groove between the panel seal of the seal cover and the opening edge of the outer panel is guided along the outer periphery of the first seal lip toward the drain hole, preventing it from entering the mounting groove. This prevents rust from forming on the inner periphery of the insertion hole of the inner panel fitted into the mounting groove.

[0044] More preferably, the mounting groove has a second seal lip at a lower opening edge thereof, the second seal lip being in elastic contact with the lower surface of the opening edge portion of the inner panel and covering the lower opening edge.

[0045] As described above, the second seal lip can sufficiently prevent mud, water, and the like kicked up by the tire while the vehicle is running from entering through the lower opening edge of the mounting groove, thereby effectively suppressing the occurrence of rust on the inner periphery of the insertion hole at the opening edge of the inner panel.

[0046] More preferably, the first seal lip and the second seal lip are provided on the upper and lower opening edges of the mounting groove.

[0047] More preferably, the panel seal has an inner peripheral base portion and a flange-shaped tip portion protruding outward from the base portion, and the tip portion is characterized in that it is elastically deformable in the vertical direction with the base portion as a fulcrum.

[0048] According to this invention, the panel seal has a tip end that is elastically deformable in the vertical direction with the base end as a fulcrum, and therefore can absorb manufacturing errors and dimensional errors of the outer panel.

[0049] More preferably, the panel seal has an inner base and a flange-shaped tip that protrudes outward from the base and abuts against the upper surface of the opening edge of the outer panel, and is characterized in that a drain hole is formed on the circumferential lower side of the tip to discharge water that has flowed into the interior from between the tip and the opening edge of the outer panel to the outside. [Explanation of symbols]

[0050] 01...Automobile 02…Fuel supply port 03...Wheelhouse 1...Outer panel 1a...Through hole 1b…Aperture edge 2...Inner panel 2a...Through hole 2b…Opening edge 3...Fuel inlet pipe 4...Fuel cap 11...Seal cover 12...Inner circumference 12a...Seal part 13...Outer periphery 14...Proximal end 15...Thick part 16...Panel seal 16a...Base 16b...Tip 17...Mounting groove 18...1st seal lip 19...Drain hole 21...Second seal lip

Claims

1. A sealing structure of a cylindrical seal cover that seals between an outer peripheral surface of a fuel inlet pipe provided at a fuel inlet portion for injecting fuel into a fuel tank of an automobile and an insertion hole formed in an outer panel and an inner panel of a vehicle body and through which the fuel inlet pipe is inserted, the outer panel and the inner panel are arranged in a vertical direction with a certain gap between their opening edge portions forming the insertion hole, and the opening edge portion of the inner panel is arranged below the opening edge portion of the outer panel, the opening edge portion of the inner panel is formed such that an inner peripheral edge of the insertion hole extends in a direction toward the fuel inlet pipe, while the opening edge portion of the outer panel is formed such that the inner peripheral edge of the insertion hole is shorter than the inner peripheral edge of the opening edge portion of the inner panel, the seal cover has an inner peripheral portion having a seal portion that elastically contacts an outer peripheral surface of the fuel inlet pipe, and an outer peripheral portion that is connected to edge portions of openings of the outer panel and the inner panel, the outer peripheral portion has an annular mounting groove formed therein that is fitted radially into the opening edge portion of the inner panel, and a disk-shaped panel seal that abuts against the opening edge portion of the outer panel from above, A seal structure of a seal cover, characterized in that a first seal lip is provided at an upper opening edge of the mounting groove, and covers the upper opening edge while elastically contacting the upper surface of the opening edge portion of the inner panel.

2. A sealing structure of a cylindrical seal cover that seals between an outer peripheral surface of a fuel inlet pipe provided at a fuel inlet portion for injecting fuel into a fuel tank of an automobile and an insertion hole formed in an outer panel and an inner panel of a vehicle body and through which the fuel inlet pipe is inserted, the outer panel and the inner panel are arranged in a vertical direction with a certain gap between their opening edge portions forming the insertion hole, and the opening edge portion of the inner panel is arranged below the opening edge portion of the outer panel, the opening edge portion of the inner panel is formed such that an inner peripheral edge of the insertion hole extends in a direction toward the fuel inlet pipe, while the opening edge portion of the outer panel is formed such that the inner peripheral edge of the insertion hole is shorter than the inner peripheral edge of the opening edge portion of the inner panel, the seal cover has an inner peripheral portion having a seal portion that elastically contacts an outer peripheral surface of the fuel inlet pipe, and an outer peripheral portion that is connected to edge portions of openings of the outer panel and the inner panel, the outer peripheral portion has an annular mounting groove formed therein that is fitted radially into the opening edge portion of the inner panel, and a disk-shaped panel seal that abuts against the opening edge portion of the outer panel from above, A seal structure of a seal cover, characterized in that a second seal lip is provided at the lower opening edge of the mounting groove, and covers the lower opening edge while elastically contacting the underside of the opening edge portion of the inner panel.

3. The seal structure of the seal cover according to claim 1, A seal structure of a seal cover, characterized in that a second seal lip is provided at the lower opening edge of the mounting groove, and covers the lower opening edge while elastically contacting the underside of the opening edge portion of the inner panel.

4. The seal structure of the seal cover according to claim 1, the panel seal has an inner peripheral base portion and a flange-shaped tip portion that protrudes radially outward from the base portion and abuts against an opening edge portion of the outer panel from above, The sealing structure of the seal cover is characterized in that the tip portion is provided so as to be elastically deformable in the vertical direction with the base portion as a fulcrum.

5. The seal structure of the seal cover according to claim 2, the panel seal has an inner peripheral base portion and a flange-shaped tip portion that protrudes radially outward from the base portion and abuts against an opening edge portion of the outer panel from above, The sealing structure of the seal cover is characterized in that the tip portion is provided so as to be elastically deformable in the vertical direction with the base portion as a fulcrum.

6. The seal structure of the seal cover according to claim 3, the panel seal has an inner peripheral base portion and a flange-shaped tip portion that protrudes radially outward from the base portion and abuts against an opening edge portion of the outer panel from above, The sealing structure of the seal cover is characterized in that the tip portion is provided so as to be elastically deformable in the vertical direction with the base portion as a fulcrum.

7. The seal structure of the seal cover according to claim 1, the panel seal has an inner peripheral base portion and a flange-shaped tip portion that protrudes radially outward from the base portion and abuts against an upper surface of an opening edge portion of the outer panel, A sealing structure of a seal cover, characterized in that a drain hole is formed on the circumferential lower side of the tip portion to discharge water that has flowed into the interior from between the tip portion and the opening edge of the outer panel to the outside.

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