JP5542115B2 - Fuel lid structure - Google Patents

Description

  The present invention relates to a fuel lid portion structure of a vehicle having two types of fuel injection ports.

  For example, a bi-fuel car is known that can switch between two types of fuel consisting of gaseous fuel such as compressed natural gas (CNG) and liquid fuel such as gasoline and supply it to an internal combustion engine. Yes.

  With respect to this type of bi-fuel vehicle, for example, Patent Document 1 discloses an internal combustion engine for a bi-fuel vehicle that can prevent sticking and deterioration of gasoline fuel system parts without deteriorating emission and fuel consumption at start-up. A fuel control apparatus is disclosed.

JP 2003-206762 A

  By the way, in a bi-fuel vehicle, it may be required to provide both a gasoline fuel inlet and a gas fuel inlet in a single fuel lid portion. In this case, for example, it is conceivable that a gas fuel injection port is newly added and arranged with respect to the conventional fuel lid portion. However, the conventional fuel lid portion is equivalent to the addition of the gas fuel injection port. In order to expand, it is necessary to change the conventional vehicle body structure (especially the outer panel in which the fuel lid portion is accommodated), and the manufacturing cost increases.

  In addition, in the fuel lid portion that has been conventionally provided, if the gas fuel inlet is additionally arranged in other portions except the gasoline fuel inlet, the two fuel inlets interfere with each other on the same plane, It is difficult to arrange two fuel injection ports for a narrow part. In Patent Document 1, there is no disclosure or suggestion about how the two fuel inlets are arranged in the fuel lid portion.

  The present invention has been made in view of the above points, and a vehicle in which two types of fuel injection ports can be arranged in the concave portion of the adapter without increasing the area of the fuel lid as compared with the prior art. An object of the present invention is to provide a fuel lid part structure.

  In order to achieve the above-mentioned object, the present invention is a fuel lid part structure of a vehicle having two types of fuel injection ports, in which a fuel lid and a recess having an opening that can be opened and closed by the fuel lid are formed. The adapter comprises a first adapter and a second adapter that are manufactured separately and then assembled together, and when the adapter is viewed from the side, The inclination angle of the outer peripheral portion and the inclination angle of the outer peripheral portion of the second adapter on the other side are made different from each other, and the first adapter and the second adapter in the longitudinal section rather than the first opening area in the opening portion. The second opening area in the connecting portion to which the is connected is set large, and the two types of fuel injection ports are arranged in the recess.

  According to the present invention, the first adapter and the second adapter, which are separately manufactured, are integrally assembled to constitute the adapter, and the inclination angle and the opening area are set as described above, so that In comparison, the space (volume) on the back side of the recessed portion of the adapter can be increased without increasing the first opening area of the opening of the adapter. As a result, in the present invention, the two types of fuel inlets can be suitably arranged in the recess of the adapter without increasing the area of the surface (design surface) of the fuel lid as compared with the conventional case. Note that the two types of fuels may be different fuels, for example, gas fuels.

  Further, according to the present invention, the bottom wall of the adapter has a first bottom wall that is close to the opening side, and a second bottom wall that is further recessed from the first bottom wall in the depth direction of the recess. The two types of fuel inlets include a liquid fuel inlet and a gas fuel inlet, the liquid fuel inlet is disposed on the first bottom wall, and the gas fuel inlet is the second bottom wall. It is characterized by having been arranged in.

  According to the present invention, the bottom wall of the adapter is constituted by the first bottom wall that is close to the opening side and the second bottom wall that is further recessed in the depth direction of the recess, and is second than the first bottom wall. By making the bottom wall further recessed toward the inside of the vehicle, it becomes possible to further increase the space (volume) on the back side of the concave portion of the adapter, and the installation space for the gaseous fuel injection port on the second bottom wall can be increased. Can be secured.

  According to the present invention, it is possible to obtain a fuel lid portion structure of a vehicle in which two types of fuel injection ports can be arranged in the recess of the adapter without increasing the area of the fuel lid as compared with the conventional case.

1 is a perspective view of a rear side of a vehicle to which a fuel lid structure according to an embodiment of the present invention is applied. It is a top view of the adapter which comprises a fuel lid part. It is a perspective view of the said adapter. It is a disassembled perspective view of the said adapter. It is a longitudinal cross-sectional view along the AA line of FIG. It is an enlarged partial side view of the adapter. FIG. 3 is an enlarged longitudinal sectional view taken along line BB in FIG. 2. It is a longitudinal cross-sectional view used for comparison with the longitudinal cross-sectional shape of the adapter in this embodiment, and the vertical cross-sectional shape of the conventional adapter which the present applicant devised. (A) is a partial enlarged perspective view showing the seal structure in the E portion of FIG. 3, (b) is an enlarged vertical sectional view taken along line CC of (a), and (c) is a joint portion. It is an expanded longitudinal cross-sectional view which shows the seal structure concerning the matched comparative example. (A) is a top view of the adapter to which the fuel lid part structure which concerns on other embodiment of this invention was applied, (b) is a cross-sectional view along the DD line of (a).

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a perspective view of the rear side of a vehicle to which a fuel lid structure according to an embodiment of the present invention is applied. In each figure, “up and down” indicates the vertical direction of the vehicle body, and “front and rear” indicates the front and rear direction of the vehicle body.

  As shown in FIG. 1, the fuel lid portion 10 is disposed on the rear side of the vehicle body of the vehicle 12 and is provided so as to be opened and closed via a hinge portion (not shown). And an adapter 20 in which a recess 18 having an opening 16 is formed. The vehicle 12 is a bi-fuel car (Bi-Fuel Car) that can supply two types of fuel consisting of gaseous fuel of compressed natural gas (CNG) and liquid fuel of gasoline to an internal combustion engine (engine) (not shown). ).

  Two types of fuel inlets are arranged in the recess 18 of the adapter 20, and a gas having a liquid fuel filling part 22 having a liquid fuel inlet 22a for gasoline and a gas fuel inlet 24a for compressed natural gas (CNG). A fuel filling unit 24 is provided. The liquid fuel inlet 22a is liquid-tightly closed via a cap member 25, and the gas fuel inlet 24a is air-tightly closed via a check function means (not shown) and covered with a cap member (not shown). .

  The fuel lid 14 is formed of a rectangular plate, and has a surface (design surface) area that is substantially the same as that of the prior art.

  2 is a plan view of the adapter constituting the fuel lid portion, FIG. 3 is a perspective view of the adapter, FIG. 4 is an exploded perspective view of the adapter, and FIG. 5 is a longitudinal section along the line AA in FIG. FIG. 6 is an enlarged partial side view of the adapter, and FIG. 7 is an enlarged vertical sectional view taken along line BB in FIG.

  As shown in FIGS. 2 to 5, the adapter 20 is made of a cup-shaped body in which a bottomed recess 18 that is recessed from the opening 16 toward the inside of the vehicle is formed, and a side wall 26 that forms the opening 16. And a bottom wall 28 for closing the bottom surface of the side wall 26. As shown in FIG. 4, the adapter 20 includes a first adapter 30 and a second adapter 32 that is attached to the lower side of the first adapter 30 through a notch 34 described later. After being manufactured, they are assembled together. In this case, the 1st adapter 30 and the 2nd adapter 32 are mutually connected by the latching | locking part 36, 36a, 36b mentioned later. Further, the bottom wall 28 of the adapter 20 includes a first bottom wall 28a adjacent to the opening 16 side, and a second bottom wall further recessed in the depth direction of the recess 18 from the first bottom wall 28a, as will be described later. 28b.

  As shown in FIG. 5, the first adapter 30 and the second adapter 32 are joined by bending the longitudinal section into a “<” shape. As shown in FIG. 6, when the adapter 20 is viewed from the side, the inclination angle of the outer peripheral portion 30 a of the first adapter 30 disposed on one side and the second disposed on the other side opposite to the one side. The inclination angle of the outer peripheral portion 32a of the adapter 32 is set so as to differ by an angle θ. Further, as shown in FIG. 5, the second opening area in the connection portion 38 where the first adapter 30 and the second adapter 32 are connected in the longitudinal section rather than the first opening area S1 in the opening portion 16 of the recess 18. S2 is set large. The inclination angle and the opening area will be described in detail later.

  As shown in FIG. 4, the first adapter 30 is provided at the upper end of the side wall 26 along the opening 16 and is bent outward, and is provided on the lower side of the flange 40. And a rubber seal member 42 that exhibits a sealing function with the outer panel 41 (see FIG. 7) of the vehicle body. The side wall 26 of the first adapter 30 is formed of a relatively hard resin material, and the bottom wall 28 of the first adapter 30 is formed of a relatively soft resin material. In this case, for example, the first adapter 30 may be integrally formed by two-color molding with a hard and soft resin material, or may be integrally formed after the side wall 26 and the bottom wall 28 are formed separately. You may make it combine.

  As shown in FIG. 2, the bottom wall 28 of the first adapter 30 has a large-diameter first hole 44 a through which the liquid fuel filling portion 22 is inserted and which surrounds and seals the outer peripheral surface of the liquid fuel filling portion 22. The first bottom wall 28a having the gas fuel filling portion 24 is inserted, and the second hole portion 44b having a medium diameter that surrounds and seals the outer peripheral surface of the gas fuel filling portion 24, and the gas fuel filling portion 24 are covered. And a second bottom wall 28b having a third hole 44c having a small diameter for supporting the cap member.

  A step 46 is formed between the first bottom wall 28a and the second bottom wall 28b along the depth direction of the recess 18 (see FIG. 5). By providing this stepped portion 46, a second bottom wall 28 b that is further depressed from the first bottom wall 28 a toward the vehicle inner side is formed in the recess 18 of the adapter 20. As a result, the first hole 44a formed in the first bottom wall 28a is disposed at a position close to the opening 16 side, and the second hole 44b and the third hole formed in the second bottom wall 28b. 44c is disposed at a position farther from the opening 16 than the first hole 44a.

  The side wall 26 on the lower side of the first adapter 30 is provided with a notch 34 corresponding to the outer shape of the second adapter 32, and the second adapter 32 is assembled to the notch 34 integrally from substantially the vertical direction. (See FIG. 4). Furthermore, a drain port 50 is provided on the lower side of the notch 34 of the first adapter 30. The drain port 50 communicates with the recess 18 via the communication passage 48 and discharges drain (mud water or the like) accumulated in the recess 18 to the outside. (See FIG. 7).

  As shown in FIG. 7, the distal end portion of the drain port 50 has an inclined surface 52 cut into an acute angle section. In FIG. 7, the alternate long and two short dashes line indicates a cut portion of the drain port 50. By cutting the tip of the drain port 50 into a slope shape, the range of mud entry with respect to the mud entry direction (vertically upward direction) is narrowed, and entry of sludge from the vertically downward direction with respect to the drain port 50 can be suppressed. .

  That is, in FIG. 7, the front end portion of the drain port 50 is cut into an acute cross section so that the inner diameter of the drain port 50 viewed from the vertically lower direction is set to D1, and the vertical lower direction when the front end portion is not cut. The inner diameter D1 can be made smaller than the inner diameter D2 of the drain port 50 as viewed from the viewpoint (D1 <D2). In addition, since the distal end portion of the drain port 50 is formed by the inclined surface 52, drainage of the drain discharged from the drain port 50 can be improved.

  Returning to FIG. 4, a locking portion 36 that locks the locking piece 54 of the second adapter 32 is provided at the lower center portion of the notch 34 of the first adapter 30. The locking portion 36 engages with a pair of claw portions 56 that sandwich the locking piece 54 of the second adapter 32 from both the left and right sides, and an engagement hole 58 formed in the locking piece 54 of the second adapter 32. And a protrusion 60. Further, right and left locking portions 36 a and 36 b that respectively lock the pair of claws 61 of the second adapter 32 are provided on the left and right sides of the cutout portion 34 of the first adapter 30. The right engaging portion 36 a and the left engaging portion 36 b are engaged with the claw portions 61 provided at the left and right ends of the second adapter 32 with respect to the rectangular engaging hole 58 formed in the first adapter 30. Match. In this case, by providing a height difference between the locking portion 36 provided in the center and the right locking portion 36a and the left locking portion 36b provided on the left and right sides, The part 36 functions as positioning and becomes easier to fit.

  The second adapter 32 is provided on a partial side wall 62 having a shape corresponding to the notch 34 of the first adapter 30, a partial flange portion 64 formed on the upper side of the partial side wall 62, and a lower side of the partial flange portion 64. And a partial seal member 66 to be provided.

  A locking piece 54 having a substantially rectangular engaging hole 58 is provided at the lower central portion of the partial side wall 62 of the second adapter 32. In this case, the second adapter 32 is displaced along the substantially horizontal direction and assembled along the notch 34 of the first adapter 30, so that the locking piece 54 of the second adapter 32 becomes the locking portion of the first adapter 30. The pair of claws 61 of the second adapter 32 are engaged with the engagement holes 58 of the first adapter 30. As a result, the second adapter 32 is assembled integrally with the first adapter 30.

  The vehicle 12 to which the fuel lid structure according to the present embodiment is applied is basically configured as described above. Next, the function and effect will be described.

  In this embodiment, as shown in FIG. 3 and FIG. 4, the first adapter 30 and the second adapter 32 are divided in advance so that they are assembled separately after being manufactured separately, for example. It is configured. Therefore, in this embodiment, when the adapter 20 is viewed from the side, the inclination angle of the outer peripheral portion 30a of the first adapter 30 and the inclination angle of the outer peripheral portion 32a of the second adapter 32 are different by an angle θ. The 1 adapter 30 and the 2nd adapter 32 can be assembled | attached (refer FIG. 6).

  In the present embodiment, the outer peripheral portion 30a of the first adapter 30 and the outer peripheral portion 32a of the second adapter 32 are different by an angle θ, so that the first opening area S1 in the opening 16 of the concave portion 18 of the adapter 20 is larger. In the longitudinal section, the second opening area S2 in the connecting portion 38 between the first adapter 30 and the second adapter 32 can be set to be large (S1 <S2). In FIG. 5, the first opening area S <b> 1 and the second opening area S <b> 2 are represented by respective inner diameter dimensions for convenience.

  In the present embodiment, the inclination angle and the opening area are set as described above, so that even if the opening area S1 of the opening portion 16 of the adapter 20 is not increased, the adapter 20 can be set to have approximately the same area as before. The space (volume) on the back side of the recess 18 can be increased. As a result, in the present embodiment, the area of the surface (design surface) of the fuel lid 14 is not enlarged as compared with the conventional case, and the liquid fuel inlet 22a and the gas fuel inlet 22b are formed in the concave portion 18 of the adapter 20. Two types of fuel inlets can be suitably arranged.

  Further, in the present embodiment, a stepped portion 46 is provided between the first bottom wall 28a and the second bottom wall 28b of the adapter 20, and the second bottom wall 28b is recessed toward the vehicle inner side than the first bottom wall 28a. By providing in such a manner, the space (volume) on the back side of the recess 18 of the adapter 20 can be further increased.

  FIG. 8 is a longitudinal sectional view used for comparison between the longitudinal sectional shape of the adapter according to the present embodiment and the longitudinal sectional shape of a conventional adapter devised by the present applicant. In addition, in FIG. 8, the longitudinal cross-sectional shape of the conventional adapter which the present applicant devised is shown with a dashed-two dotted line.

  In the present embodiment, the first adapter 30 and the second adapter 32 are divided and configured, and the second bottom wall 28b formed to be recessed toward the vehicle inner side from the first bottom wall 28a via the stepped portion 46 is provided. By providing, the space (volume) of a halftone dot part can be expanded compared with the shape of the conventional adapter shown with a dashed-two dotted line.

  In this case, the inner wall surface of the second adapter 32 is formed in an undercut shape inclined toward the center side with respect to the inner wall surface of the first adapter 30. For example, when the adapter 20 is integrally molded with a resin molding die (not shown) The draft angle is too small and it may be difficult to remove the die. However, in the present embodiment, the undercut shape can be easily formed by dividing the first adapter 30 and the second adapter 32 and separating the second adapter 32 corresponding to the undercut shape portion. It becomes.

  In this embodiment, the area of the surface (design surface) of the fuel lid 14 is not increased by increasing the space (volume) of the halftone dot portion, and the liquid fuel inlet is inserted into the recess 18 of the adapter 20. Two types of fuel inlets including 22a and gaseous fuel inlet 22b can be suitably arranged. That is, the bottom wall 28 of the adapter 20 is constituted by a first bottom wall 28a that is close to the opening 16 side and a second bottom wall 28b that is further recessed in the depth direction of the concave portion 18, and from the first bottom wall 28a. Further, by making the second bottom wall 28b further recessed toward the vehicle inner side, it becomes possible to further increase the space (volume) on the back side of the concave portion 18 of the adapter 20, and the second bottom wall 28b An installation space for the fuel injection port 24a can be secured.

  Further, in the present embodiment, the latching piece 54 is sandwiched between the pair of claws 56 and the latching unit 54 has a simple structure provided with a protrusion 60 that engages with the engagement hole 58 of the latching piece 54. A portion 36 is provided (see FIG. 4). With this configuration, in the present embodiment, the second adapter 32 can be easily assembled from the substantially vertical direction with respect to the notch portion 34 of the first adapter 30, and the adapter 20 is composed of two parts. However, the assembling work can be simplified.

Next, the seal structure in the assembly part of the 1st adapter 30 and the 2nd adapter 32 is demonstrated below.
9A is a partially enlarged perspective view showing the seal structure in the E portion of FIG. 3, FIG. 9B is an enlarged vertical sectional view taken along line CC of FIG. 9A, and FIG. c) is an enlarged longitudinal sectional view showing a seal structure according to a comparative example in which joint portions are matched.

  A flat strip-like seal member 42 made of soft rubber or the like is provided on the lower side of the flange portion 40 of the first adapter 30 made of hard resin. In this case, one end portion of the seal member 42 is set to extend by a predetermined length from one end portion of the flange portion 40 of the first adapter 30 in the notch portion 34. On the other hand, a flat strip-like partial seal member 66 is provided on the lower side of the partial flange portion 64 of the second adapter 32. In this case, the other end portion of the partial flange portion 64 of the second adapter 32 attached to the cutout portion 34 of the first adapter 30 is set to extend by a predetermined length from the partial seal member 66.

  Therefore, when the second adapter 32 is integrally assembled with the first adapter 30, one end of the flange portion 40 of the first adapter 30 corresponds to the other end of the partial flange portion 64 of the second adapter 32. In addition, one end portion of the seal member 42 corresponds to the other end portion of the partial seal member 66. In this case, as shown in FIG. 9B, a joint portion between the flange portions (the flange portion 40 and the partial flange portion 64) and a joint portion between the seal members (the seal member 42 and the partial seal member 66) Are set so as to be displaced by a predetermined length along the circumferential direction of the side wall 26.

  In this way, the positions of the joint portions between the hard flange portions (the flange portion 40 and the partial flange portion 64) and the joint portions between the soft seal members (the seal member 42 and the partial seal member 66) are shifted. As a result, a seal surface (seal portion) 68 is formed by the laminated surface of the upper partial flange portion 64 and the lower seal member 42 (see FIG. 9B), so the first adapter 30 and the second adapter The sealing performance at the coupling site with the adapter 32 can be improved.

  On the other hand, in the comparative example in which the joint portion between the flange portions (the flange portion 40 and the partial flange portion 64) and the joint portion between the seal members (the seal member 42 and the partial seal member 66) are arranged to coincide with each other, As shown in FIG. 9C, the sealing surface as described above is not formed, and the clearance at the joint portion between the flange portions and the clearance at the joint portion between the seal members are continuously formed. It is difficult to improve the sealing performance.

Next, a fuel lid structure according to another embodiment will be described.
FIG. 10A is a plan view of an adapter to which a fuel lid structure according to another embodiment of the present invention is applied, and FIG. 10B is a cross-sectional view taken along line DD in FIG. 10A. FIG.

  In this other embodiment, in the bottom wall 28 of the adapter 20 formed of a relatively soft resin material, the first to third bellows portions that are annular at the portions surrounding the first to third hole portions 44a to 44c, respectively. It is characterized in that 70a to 70c are formed. Each of the annular first to third bellows portions 70a to 70c is configured such that a relatively protruding peak portion and a relatively recessed valley portion are alternately and continuously formed.

  The first hole 44a surrounds the outer peripheral surface of the liquid fuel filling part 22 projecting toward the recess 18 to form a seal part, and the second hole 44b is the outer periphery of the gaseous fuel filling part 24 projecting toward the recess 18 A seal portion is formed by surrounding the surface, and a seal portion is formed by surrounding the outer peripheral surface of a support portion of a cap member (not shown) in which the third hole portion 44c is attached to the gaseous fuel filling portion 24, and a total of 3 The seal part is comprised by the point.

  In this case, for example, when the center of at least one of the first to third holes 44a to 44c is displaced due to a manufacturing error or the like, a clearance is generated due to the displacement of the center of the hole, and each seal portion There is a risk that the sealing performance of the product will deteriorate.

  Therefore, in another embodiment, first to third bellows portions 70a to 70c that circulate around the first to third hole portions 44a to 44c are provided, and the first to third hole portions 44a to 44c are provided in the first to third hole portions 44a to 44c. The first to third bellows portions 70a to 70c are deformed with respect to the displacement of at least one hole portion, and the respective seal portions are displaced to follow, thereby avoiding deterioration of the seal performance of each seal portion. it can.

  In other words, the peak portions and the valley portions that respectively constitute the first to third bellows portions 70a to 70c expand and contract to deform and absorb the displacement of the first to third hole portions 44a to 44c. Sufficient sealing performance at the seal portion can be ensured.

DESCRIPTION OF SYMBOLS 10 Fuel lid part 12 Vehicle 14 Fuel lid 16 Opening part 18 Recessed part 20 Adapter 22a Liquid fuel inlet 24a Gaseous fuel inlet 28a 1st bottom wall 28b 2nd bottom wall 30 1st adapter 32 2nd adapter 38 Connection part

Claims (2)

A fuel lid structure of a vehicle having two types of fuel injection ports,
A fuel lid, and an adapter formed with a recess having an opening that can be opened and closed by the fuel lid,
The adapter is composed of a first adapter and a second adapter that are manufactured separately and then assembled together,
When the adapter is viewed from the side, the inclination angle of the outer peripheral portion of the first adapter on one side is different from the inclination angle of the outer peripheral portion of the second adapter on the other side,
The second opening area in the connecting portion where the first adapter and the second adapter are connected in the longitudinal section is set larger than the first opening area in the opening, and the two types of fuel injection are provided in the recess. A fuel lid part structure of a vehicle, characterized in that an inlet is arranged. The bottom wall of the adapter has a first bottom wall that is close to the opening side, and a second bottom wall that is further recessed from the first bottom wall in the depth direction of the recess,
The two types of fuel inlets include a liquid fuel inlet and a gaseous fuel inlet,
2. The fuel lid portion structure for a vehicle according to claim 1, wherein the liquid fuel inlet is disposed on the first bottom wall, and the gaseous fuel inlet is disposed on the second bottom wall.

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