JP4603315B2 - Molding method of outer lid for oil filler port - Google Patents

Description

  The present invention relates to an outer lid for a fuel filler (so-called fuel filler lid) attached to a fuel filler of an automobile, and further relates to a molding method thereof.

  A body of a vehicle such as an automobile is provided with a fuel filler for supplying fuel (for example, gasoline), and an outer lid for a fuel filler called a fuel filler lid is attached to the fuel filler so as to be opened and closed. It has been. At the time of fueling, the fuel filler lid of the fueling port is opened, and a fueling gun is inserted into a filler neck extending from the fuel tank and facing the inside of the fueling port to perform fueling. After the end of refueling, a cap is attached to the filler neck, the fuel filler lid is closed, and the refueling port is covered. By closing the fuel filler lid, the fuel filler port can be made inconspicuous from the outside.

  By the way, the fuel filler lid is usually manufactured by using the same steel plate as the outer plate constituting the body of the vehicle for the outer plate, and then pressing the inner plate after overlapping the inner plate. Thus, it is a part that is very difficult to form because it covers the fuel filler opening and is on the design surface that affects the appearance of automobiles and the like. In particular, it is difficult to ensure a good appearance on the outer peripheral portion and to secure a demand for the design surface.

Conventionally, various methods have been proposed as a method for molding a fuel filler lid, and the so-called flange-up type, hemming type, thick hem type, and the like are representative. In the flange-up type, as shown in FIG. 5, outer peripheral portions of the outer plate 101 and the inner plate 102 are bent inward to form flanges 101a and 102a, and the flanges 101a and 102a are joined by SP welding. In the hemming type, as shown in FIG. 6, the flange 101 a of the outer plate 101 is folded back, and the inner plate 102 and the flange 101 a are folded in the press direction. In the thick hem type, as shown in FIG. 7, the flange 101a of the outer plate 101 is molded while ensuring a space (thickness direction) with respect to the pressing direction.
JP 2002-240580 A

  However, the actual situation is that the fuel filler lid formed by these conventional forming methods has advantages and disadvantages in terms of appearance, design, ease of forming, manufacturing cost, and the like.

  Specifically, in the flange-up type, since the flanges 101a and 102a are formed in a plane perpendicular to the press direction, there is an advantage that a design surface can be easily obtained. In addition, in the outer peripheral portion, the inside appearance in the line-of-sight direction is also good. However, since the flange 101a and 102a of the outer plate 101 and the inner plate 102 are joined by SP welding as a manufacturing process, the appearance is inferior in terms of merchantability. In the joint by SP welding, the impression of welding remains.

  In the hemming type, the outer plate and the inner plate are caulked by a plurality of press processes, and the appearance merchantability is improved, but inferior to the flange-up type in terms of ease of molding and manufacturing cost. Also on the design surface, since the flange 101a is folded in the pressing direction, a pressure difference (thickness) occurs at this portion, and it is difficult to ensure the requirement. Moreover, since there is no rising part in the outer peripheral part, the inside appearance is poor with respect to the line-of-sight direction.

  In the thick hem type, as in the previous hemming type, the outer plate and the inner plate are in a caulking process state by a plurality of press processes, and the appearance merchantability is improved. Moreover, the point of the above-mentioned inside appearance is also favorable. However, it is the worst in terms of ease of molding and causes an increase in cost. Further, the flange 101a needs to be molded while ensuring a space (thickness direction) with respect to the pressing direction, and it is difficult to establish a processing step.

  The present invention has been proposed in view of such a conventional situation. That is, the present invention aims to provide an outer lid for a fuel filler (fuel filler lid) that is easy to mold and that is excellent in appearance, design, and appearance, and provides a molding method therefor. The purpose is to do.

In order to achieve the above-described object, the fuel filler outer lid (fuel filler lid) of the present invention is a method for forming an outer lid for a fuel filler attached to an automobile fuel filler so as to be openable and closable. It is configured by overlapping the plate, the peripheral edge of the inner plate is raised and molded, and the peripheral edge of the outer plate is folded back with the peripheral edge tip of the rising and forming inner plate as a buckling point It is characterized by.

Further, the molding method of the fuel filler outer lid (fuel filler lid) according to the present invention is such that when molding the outer lid for the fuel filler attached to the fuel filler opening of an automobile by pressing, the outer plate and the dimensions are larger than this. The outer plate and the peripheral edge of the inner plate are raised and molded, and then the peripheral edge of the outer plate is folded back with the tip of the peripheral edge of the inner plate formed as a buckling point. It is characterized by that.

  The fuel filler lid of the present invention is formed by pressing the outer peripheral portion like the previous hemming type and thick hem type. For example, the welding indentation is not required because welding is not required like the flange-up type. The appearance is not impaired by such as. Further, there is no difference in pressure as in the hemming type, and it is easy to ensure the requirements of the design surface.

  On the other hand, considering the ease of molding, especially for the thick hem type, extremely difficult processing is required. In the present invention, the peripheral edge (flange) of the inner plate is raised and its tip is seated. By using the bending point, a molding process with a high degree of difficulty is easily performed, and the structure equivalent to the thick hem type is molded at a low cost.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the outer lid | cover (fuel filler lid) for fuel fillers which is easy to shape | mold and excellent in the external appearance, the design surface, and the point of medium appearance. Further, according to the molding method of the present invention, as with the thick hem type, the outer lid for the fuel filler (fuel filler lid), which is excellent in appearance, design, and medium appearance, is far more than the conventional thick hem type molding. Can be easily formed.

Hereinafter, an outer lid for a fuel filler port (fuel filler lid) to which the present invention is applied and a molding method thereof will be described in detail with reference to the drawings.

  As shown in FIG. 1, the fuel filler lid 1 is provided at a fuel filler port of a vehicle body 2 of an automobile. At the time of fueling, the fuel filler lid 1 is opened to extend from a fuel tank and face the inside of the fuel filler port. Insert a refueling gun into the filler neck and refuel. After the end of refueling, a cap is attached to the filler neck, the fuel filler lid 1 is closed, and the refueling port is covered.

  FIG. 2 shows an attachment structure of the fuel filler lid 1 to the fuel filler opening. As shown in FIG. 2, the fuel filler opening 3 provided in the vehicle body 2 is provided as a recess with respect to the outer plate of the vehicle body 2, and a filler neck 4 extending from the fuel tank faces here. When refueling, the cap of the filler neck 4 is removed, and a refueling gun is inserted into the filler neck 4 to perform refueling. After refueling is completed, the fuel gun is removed from the filler neck 4, a cap is attached to the filler neck 4, and the fuel filler lid 1 is closed.

  The fuel filler lid 1 is attached to the fuel filler 3 by fixing the attachment plate 6 in the fuel filler 3 so as to be opened and closed via the hinge portion 5. Further, the fuel filler lid 1 is provided with a locking piece 7 at a position opposite to the mounting plate 6, and when the fuel filler lid 1 is closed, the locking piece 7 is provided in the fuel filler opening 3. The locking claw provided on the door is locked to prevent the fuel filler lid 1 from being inadvertently opened.

Here, the fuel filler lid 1 has a double structure of an outer plate 11 and an inner plate 12, and the hinge portion 5 of the mounting plate 6 is sandwiched between the outer plate 11 and the inner plate 12. It is fixed to the fuel filler lid 1. The locking piece 7 is integrally formed by cutting out the inner plate 12 of the fuel filler lid 1.

  The molding structure of the fuel filler lid 1 having this double structure will be described. As described above, the fuel filler lid 1 has a so-called two-layer structure in which the outer plate 11 and the inner plate 12 are overlapped and integrated. ing. Here, since the outer plate 11 is required to have the same appearance as the vehicle body 2 of the automobile, for example, a steel plate similar to that of the vehicle body 2 is used. On the other hand, since the inner plate 12 is a portion inside the fuel filler opening 3, the appearance requirements are not so strict, and a steel plate made of a material having excellent strength is used to reinforce the outer plate 11. .

  The outer plate 11 and the inner plate 12 are overlapped with each other and integrated by pressing the outer peripheral portion. However, the pressing process at this time is different from the above hemming type, thick hem type, etc. It is pressed by the invention's unique molding. Hereinafter, this press working will be described.

  FIG. 3 shows a molding process of the fuel filler lid 1. In the present invention, when the fuel filler lid 1 is molded, first, the inner plate 12 is overlaid on the outer plate 11 as shown in FIG. At this time, the dimension L1 of the outer plate 11 is set to be larger than the dimension L2 of the inner plate 12.

  Next, as shown in FIG. 3B, the outer plate 11 and the inner plate 12 are pressed, the outer peripheral portion is raised and formed, and the flanges 11a and 12a are formed. These flanges 11 a and 12 a are formed substantially straight with respect to the outer plate 11 and the inner plate 12. Further, from the relationship of the dimensions, the height h1 of the flange 11a of the outer plate 11 is larger than the height h2 of the flange 12a of the inner plate 12 by the difference in the dimensions.

  Next, as shown in FIG. 3C, only the flange 11a of the outer plate 11 is bent inward from this state. Then, the front end 12b of the flange 12a of the inner plate 12 abuts against the inner surface of the flange 11a of the outer plate 11. Further, when the flange 11a of the outer plate 11 is bent inward, the tip 12b of the flange 12a of the inner plate 12 becomes a buckling point, and as shown in FIG. Bends at the crook point.

  Finally, as shown in FIG. 3E, pressing is performed until the flange 11a of the outer plate 11 contacts the inner surface of the inner plate 12, thereby completing the fuel filler lid 1. In the obtained fuel filler lid 1, since the flange 11a is formed while securing a space (thickness direction) with respect to the press direction, as in the thick hem type, it is favorable in terms of appearance and appearance. FIG. 4 shows a state in which the fuel filler lid 1 of the present invention is attached to the fuel filler opening. As in the case of the thick hem type, the thickness is secured at the outer peripheral portion, so that the edge portion of the fuel filler lid 1 and the interior of the fuel filler opening are not visible in the line-of-sight direction.

  Table 1 shows the advantages of the fuel filler lid 1 molded by the molding method of the present invention in comparison with the conventional method. In the table, the conventional method 1 is a flange-up type, the conventional method 2 is a hemming type, and the conventional method 3 is a thick hem type.

  As is clear from this table, according to the molding method of the present invention, not only can a fuel filler lid with an excellent appearance in terms of design surface, flange surface, medium appearance, etc. be obtained, but also ease of molding and cost can be obtained. It can be seen that this is also advantageous.

It is a side view which shows an example of the vehicle body of the motor vehicle provided with a fuel filler lid. It is a schematic perspective view which shows the attachment structure of the fuel filler lid to a fuel filler opening. It is a figure which shows an example of the shaping | molding process of this invention in process order. It is a figure explaining the mode of the inside appearance in the fueling inlet which attached the fuel filler lid of this invention. It is a figure which shows an example of the conventional flange up type fuel filler lid. It is a figure which shows an example of the conventional hemming type fuel filler lid. It is a figure which shows an example of the conventional fuel filler lid of a thick hem type.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel filler lid, 2 vehicle body, 3 filler opening, 4 filler neck, 5 hinge part, 6 mounting plate, 7 latching piece, 11 outer plate, 12 inner plate, 11a, 12a flange

Claims (1)

    When forming an outer lid for an oil filler port that can be opened and closed to an oil filler port of an automobile by pressing, the outer plate and an inner plate having a smaller dimension are overlapped, and the outer plate and the peripheral edge of the inner plate are raised. A molding method for an outer lid for a fuel filler opening, characterized in that, after molding, the peripheral edge of the outer plate is folded back with the tip of the peripheral edge of the rising inner plate as a buckling point.

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