Lid mounting structure

Abstract

To provide a lid mounting structure that can eliminate rattling without losing ease of mounting and prevent water from intruding.SOLUTION: A recessed portion 26 in a cylindrical shape is formed on a side surface of a box mounting part 24, and a recessed portion receiving part 38, protruded in a cylindrical shape with a circular cross section to a position matching the recessed portion 26 of the box mounting part 24, in which a small diameter portion 38b, a large diameter portion 38d and an inclined portion 38c connecting the small diameter portion 38b to the large diameter portion 38d are provided on an inner side surface, is formed on a side surface of an arm member storage part 37. In a cap 40 are formed a first trunk portion 41a that penetrates through the small diameter portion 38b of the recessed portion receiving part 38, of the arm member storage part 37 and is inserted into the recessed portion 26 of the box mounting part 24 and is engaged therewith, a second trunk portion 41b that penetrates through the large diameter portion 38d and a third trunk portion 41c that penetrates through the inclined portion 38c. In the third trunk portion 41c is formed a seal portion 45 that elastically contacts the inclined portion 38c so that the portion protrudes circumferentially when embedding the cap 40 into the recessed portion receiving part 38 so that the portion protrudes circumferentially.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a mounting structure for an openable and closable lid that covers a fuel filler port, a charging port, or the like of a vehicle body such as an automobile vehicle. [Background technology]

[0002] When refueling or filling an automobile fuel tank with fuel such as gasoline or hydrogen, the fuel filler cap or filling port cap that covers the fuel filler or filling port on the vehicle body is opened, the fuel cap is removed, and fuel is filled from the fuel filler port, or a filling plug is inserted into the filling port to fill hydrogen. When charging an electric vehicle or PHV (plug-in hybrid vehicle), the charging lid is opened, the cap of the quick charging port or normal charging port is removed, and the charging connector is inserted into the charging port to charge.

[0003] This type of lid Mounting Structure The technology disclosed in Patent Document 1 will be described with reference to Figures 1 to 5. An arm member 20 is attached to the back surface 12 of a lid 10, which is a fuel filler cap. The arm member 20 is a plate curved in an arc, and has a box attachment part 24 at its tip, which is the part that is attached to a box 30 (fuel filler box).

[0004] As shown in Fig. 4, box mounting portion 24 of arm member 20 is formed with box engagement pins 250 of arm member 20 that engage with arm member engagement portions 350 (Fig. 3) of box 30. Box engagement pins 250 are formed on both side surfaces of the tip of box mounting portion 24.

[0005] 1 and 2, box 30 has a box main body 31 having a fuel filler hole 36 (opening) at the center of the bottom for inserting a fuel gun that communicates with fuel filler port 1 of vehicle body 2, and an arm member storage section 37 for storing arm member 20, and box 30 is attached to box holding section 3 of vehicle body 2 via seal member 33. Arm member storage section 37 is formed to extend further inside vehicle body 2 (left side in FIG. 1) than the portion of vehicle body 2 where box holding section 3 is formed.

[0006] As shown in FIG. 3, arm member storage section 37 is formed with arm member guide section 34 that guides box engagement pin 250 of arm member 20 to arm member engagement section 350, and arm member engagement section 350 that engages with box engagement pin 250 of arm member 20 is formed at the tip portion of arm member guide section 34.

[0007] Since the arm member guide portion 34 is formed, when the arm member 20 is attached to the box 30, the box engagement pin 250 of the arm member 20 is inserted into the arm member guide portion 34 and slid, so that the arm member 20 can be easily assembled to the box 30 even if it is difficult to see the back of the arm member storage portion 37 of the box 30. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2019-85060 A Summary of the Invention [Problem to be solved by the invention]

[0009] In the above-mentioned Patent Document 1, an arm member guide portion 34 is formed in the arm member storage portion 37 of the box 30, and a box engagement pin 250 of the arm member 20 passes through the arm member guide portion 34, making it easy to attach the lid 10 to the box 30. However, because a clearance is required between the arm member guide portion 34 and the box engagement pin 250, the arm member 20 may rattle within the arm member engagement portion 350 of the arm member storage portion 37 after attachment, making it difficult to close the lid 10.

[0010] On the other hand, it may be possible to prevent the above-mentioned rattle by using a cap or the like that penetrates arm member storage section 37 on box mounting section 24 and engaging the cap with box mounting section 24. However, in this case, it is anticipated that a new problem will arise in which water will seep in between the cap and arm member storage section 37 and enter box mounting section 24, preventing smooth rotation of the lid.

[0011] Therefore, the present invention provides a lid mounting structure that does not impair the ease of mounting a fuel filler port, charging port, etc. to a box, eliminates rattling, and prevents water that has seeped in between the cap and the arm member storage section from entering the box mounting section. [Means for solving the problem]

[0012] In order to solve the above problem, the present invention of claim 1 provides: Fuel filler, charging or filling port on the vehicle The lid that covers the box has an arm member on which a box mounting portion is formed, Fuel filler, charging or filling port on the vehicle a box having a box body portion with an opening and an arm member storage portion for storing an arm member, and a cap that penetrates the arm member storage portion is fitted into the box mounting portion, thereby enabling the lid to be opened and closed around the box mounting portion as a rotation center, wherein a cylindrical recess is formed on at least one side of the box mounting portion, and a recess receiving portion that protrudes in a cylindrical shape with a circular cross section is formed on the side of the arm member storage portion at a position that matches the recess in the box mounting portion, and a small diameter portion formed on the box mounting portion side and a small diameter portion formed on the box mounting portion side are formed on the inner side of the recess receiving portion. a large diameter portion having a diameter larger than that of the small diameter portion, and an inclined portion connecting the small diameter portion and the large diameter portion are formed coaxially; the cap has a body portion that penetrates the recessed receiving portion of the arm member storage portion and is inserted into the recessed portion of the box mounting portion, the body portion being formed coaxially with a first body portion that penetrates the small diameter portion of the recessed receiving portion and is inserted into and engages with the recessed portion of the box mounting portion, a second body portion that penetrates the large diameter portion, and a third body portion that penetrates the inclined portion, and the third body portion has a sealing portion that protrudes circumferentially and elastically contacts the inclined portion when the cap is fitted into the recessed receiving portion.

[0013] In the present invention of claim 1, a cylindrical recess is formed on at least one side of the box mounting part, and a cylindrical recess receiving portion with a circular cross-section that protrudes is formed on the side of the arm member storage part at a position that matches the recess in the box mounting part, and the arm member can be attached to the arm member storage part of the box by fitting and engaging a cap that passes through the recess receiving portion of the arm member storage part with the box mounting part, thereby preventing the arm member from rattling inside the arm member storage part.

[0014] In addition, the inner surface of the recessed receiving portion is coaxially formed with a small diameter portion formed on the box mounting portion side, a large diameter portion having a diameter larger than that of the small diameter portion, and an inclined portion connecting the small diameter portion and the large diameter portion, the cap has a body portion which penetrates the recessed receiving portion of the arm member storage portion and is inserted into the recessed portion of the box mounting portion, the body portion is coaxially formed with a first body portion which penetrates the small diameter portion of the recessed receiving portion and is inserted into and engaged with the recessed portion of the box mounting portion, a second body portion which penetrates the large diameter portion, and a third body portion which penetrates the inclined portion, and the third body portion is formed with a sealing portion which protrudes circumferentially and elastically contacts the inclined portion when the cap is fitted into the recessed receiving portion, so that even if water enters the box mounting portion side from between the cap and the recessed receiving portion, the intrusion of water between the recessed portion of the box mounting portion and the first body portion of the cap is prevented. In addition, no new assembly member such as an O-ring is required.

[0015] The present invention of claim 2 is the invention of claim 1, wherein the seal portion formed on the third body portion of the cap is a lid having a tapered tip portion in cross section. Mounting Structure It is.

[0016] In the present invention of claim 2, the seal portion formed on the third body of the cap is formed so that the tip portion protrudes in a tapered shape in cross section, so that the seal portion can bend and elastically contact the recessed receiver. As a result, even if the cap is lightly pressed into the recessed receiver, the gap between the cap and the recessed receiver can be reliably sealed, so that even if water infiltrates into the box mounting portion side from between the cap and the recessed receiver, water can be prevented from infiltrating between the recess on the box mounting portion side and the first body of the cap.

[0017] The present invention of claim 3 provides a lid mounting structure according to claim 1 or 2, in which an angle between the small diameter portion and the inclined portion of the recess receiving portion is larger than an angle between the first body portion and the third body portion of the cap.

[0018] In the present invention of claim 3, the angle between the small diameter portion and the inclined portion of the recess receiver is larger than the angle between the first body portion and the third body portion of the cap, so the length of the body portion of the cap that penetrates into the recess receiver can be made shorter than when the angle is the same as or smaller than the angle between the first body portion and the third body portion of the cap. As a result, the length of the cap and the protruding length of the recess receiver can be made shorter, and the weight of the cap and the recess receiver can be reduced.

[0019] The present invention of claim 4 is an attachment structure for a lid according to claims 1 to 3, in which an inner groove is formed circumferentially on the large diameter portion of the recessed receiving portion of the arm member storage portion, and an engaging protrusion is formed on the outer surface of the second body of the cap at a position which matches the inner groove of the recessed receiving portion when the cap is fitted into the recessed receiving portion, and the inner groove and the engaging protrusion engage with each other.

[0020] In the present invention of claim 4, an inner groove is formed circumferentially in the large diameter portion of the recessed receiving portion of the arm member storage portion, and an engaging protrusion is formed on the outer surface of the second body of the cap at a position which matches the inner groove of the recessed receiving portion when the cap is fitted into the recessed receiving portion, and the inner groove and the engaging protrusion engage with each other, thereby preventing the cap from coming off the recessed receiving portion of the arm member storage portion due to opening and closing of the lid, vibrations during driving, etc.

[0021] The present invention of claim 5 is a lid mounting structure in which the cap and the box mounting part are made of different materials in the inventions of claims 1 to 4. If the cap and the box mounting part are made of the same material, both of the recesses of the engaged cap and box mounting part are prone to wear.

[0022] In the present invention of claim 5, the cap and box mounting portion are formed from different materials, so that it is possible to prevent both the engaging recesses of the cap and box mounting portion from wearing down and becoming rattled over time. Effect of the Invention

[0023] A cylindrical recess is formed on at least one side of the box mounting portion, and a cylindrical recess receiving portion with a circular cross-section that protrudes is formed on the side of the arm member storage portion at a position that matches the recess in the box mounting portion, and the arm member can be attached to the arm member storage portion of the box by fitting and engaging a cap that passes through the recess receiving portion of the arm member storage portion with the box mounting portion, thereby preventing the arm member from rattling inside the arm member storage portion.

[0024] In addition, the inner surface of the recessed receiving portion is coaxially formed with a small diameter portion formed on the box mounting portion side, a large diameter portion having a diameter larger than that of the small diameter portion, and an inclined portion connecting the small diameter portion and the large diameter portion, the cap has a body portion which penetrates the recessed receiving portion of the arm member storage portion and is inserted into the recessed portion of the box mounting portion, the body portion is coaxially formed with a first body portion which penetrates the small diameter portion of the recessed receiving portion and is inserted into and engaged with the recessed portion of the box mounting portion, a second body portion which penetrates the large diameter portion, and a third body portion which penetrates the inclined portion, and the third body portion is formed with a sealing portion which protrudes circumferentially and elastically contacts the inclined portion when the cap is fitted into the recessed receiving portion, so that even if water enters the box mounting portion side from between the cap and the recessed receiving portion, the intrusion of water between the recessed portion of the box mounting portion and the first body portion of the cap is prevented. In addition, no new assembly member such as an O-ring is required. [Brief description of the drawings]

[0025] [Figure 1] 4 is a cross-sectional view of the box, the lid, and the arm member with the lid open. FIG. [Diagram 2] 2 is an enlarged cross-sectional view of an arm storage section in FIG. 1. [Diagram 3] 13 is a perspective view of one side of the arm member storage portion. FIG. [Figure 4] FIG. 2 is a perspective view of one side of the box mounting portion. [Diagram 5] 11 is a cross-sectional view of the vicinity of a protrusion (box engagement pin) of the box mounting portion. [Figure 6] FIG. 11 is a perspective view of the other side of the box mounting portion of the arm member, showing the embodiment of the present invention. [Figure 7] FIG. 13 is a perspective view of the other side of the arm member storage portion, illustrating the embodiment of the present invention, and is a perspective view illustrating the relationship with the cap. [Figure 8] FIG. 2 is a side view of a cap according to an embodiment of the present invention. [Figure 9] FIG. 13 is a cross-sectional view showing an embodiment of the present invention, illustrating the engagement relationship between the recess receiving portion on the other side of the arm member storage portion, the recess in the box mounting portion, and the cap when the cap is fitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] The following embodiment will be described with respect to a mounting structure for a lid 10 (fuel filler cap) that closes and opens / closes a fuel filler port 1 of a vehicle body 2, but it can also be used as a filler port for filling a fuel cell vehicle with hydrogen, or as a charging port for charging an electric vehicle or a PHV (plug-in hybrid vehicle). Note that the same reference numbers will be used for the same parts as in the background art.

[0027] 1, the lid 10 is formed to match the shape of the fuel filler opening 1 in order to close the fuel filler opening 1 of the vehicle body 2. When filling a fuel tank for an automobile with fuel, the lid 10 closing the fuel filler opening 1 provided on the vehicle body 2 is opened, and fuel is filled through the fuel filler opening 1.

[0028] An arm member attachment portion 13 of the lid 10 is provided on the back surface 12 of the lid 10 to which an arm member 20, which is an attachment member of the lid 10, is attached. In this embodiment, the arm member attachment portion 13 of the lid 10 is formed as two parallel plates. The arm member attachment portion 13 is provided with an arm member attachment hole 14 of the lid 10 to which the arm member 20 is attached.

[0029] 1 and 2, the arm member 20 has an arc-shaped curved shape and has a lid mounting part 21 at one end that is attached to the lid 10, and a box mounting part 24 at the other end that is attached to the box 30. The lid 10 is attached to the arm member 20 by fitting the lid mounting part 21 into the arm member mounting hole 14 of the lid 10.

[0030] In addition, the lid 10 and the arm member 20 may be formed integrally, and the lid mounting portion 21 of the arm member 20 and the arm member mounting hole 14 of the lid 10 may be omitted, with the lid mounting portion 21 of the arm member 20 being formed integrally on the back surface 12 of the lid 10.

[0031] A lid locking portion 22 is formed at the tip of the lid mounting portion 21 of the arm member 20, extending toward the box 30. When the lid 10 is closed, the lid locking portion 22 engages with a lock pin 32 of the box 30, which will be described later.

[0032] Box 30 has a box main body 31 having a fuel filler hole 36 (opening) at the center of the bottom for inserting a fuel gun that communicates with fuel filler port 1 of vehicle body 2, and an arm member storage section 37 for storing arm member 20, and box 30 is attached to box holding section 3 of vehicle body 2 via seal member 33. Arm member storage section 37 is formed to be recessed further inside vehicle body 2 (left side in FIG. 1 ) than the portion of vehicle body 2 where box holding section 3 is formed. Details of arm member storage section 37 will be described later.

[0033] A lock pin 32 is formed on the side of the box 30 opposite the arm member storage section 37, and when the lid 10 is closed, the lock pin 32 engages with the lid lock section 22 of the arm member 20 to lock the lid 10. When the lid 10 is opened, the lock pin 32 of the box 30 retracts and disengages from the lid lock section 22 of the arm member 20.

[0034] A sealing member 33 is attached around the upper end of the box main body 31, which seals the gap between the box holding portion 3 and the upper end of the box main body 31 when the box main body 31 is attached to the box holding portion 3 of the vehicle body 2.

[0035] As shown in Figures 3 and 5, one side 37a of the arm member storage section 37 has an arm member guide section 34 protruding therefrom that guides the cylindrical protrusion 25 formed on the box mounting section 24 of the arm member 20 from the box main body section 31, and a protrusion receiving section 35 that engages with the cylindrical protrusion 25 formed on the box mounting section 24 of the arm member 20 is formed at the tip portion of the arm member guide section 34.

[0036] The width of the arm member guide portion 34 through which the protrusion 25 of the box mounting portion 24 passes is formed slightly larger than the diameter of the protrusion 25, so that the protrusion 25 can easily pass through. In addition, a narrow width portion 34a is formed at the connection portion between the arm member guide portion 34 and the protrusion receiving portion 35, with both sides recessed so that the width is slightly smaller than the diameter of the protrusion 25. The protrusion 25 is pressed into the narrow width portion 34a, and the narrow width portion 34a bends slightly to allow the protrusion 25 to pass through, so that the protrusion 25 is fitted into the protrusion receiving portion 35 and the protrusion 25 is prevented from coming off the protrusion receiving portion 35. The width of the protrusion receiving portion 35 of the arm member guide portion 34 is formed to be approximately the same as the diameter of the protrusion 25, so that the protrusion 25 is prevented from shifting within the protrusion receiving portion 35.

[0037] In addition, a protrusion 34b having an inclined surface is formed on the box main body 31 side from the outer surface of the location where the narrow width portion 34a of the connection portion between the arm member guide portion 34 of the box 30 and the protrusion receiving portion 35 is formed in the inward direction (direction perpendicular to the narrow width portion 34a).

[0038] As shown in Fig. 4, a convex portion 25 is formed on one side surface 24a of the box mounting portion 24 of the arm member 20, protruding in a cylindrical shape. In addition, a convex portion inclined surface 25a is formed at the tip portion of the convex portion by cutting into a slanted shape. The convex portion inclined surface 25a makes it easier for the convex portion 25 to climb over the protrusion 34b of the arm member guide portion 34, so that the arm member 20 can be easily mounted on the convex portion receiving portion 35 of the box 30. The convex portion inclined surface 25a does not have to be formed.

[0039] On the other hand, as shown in FIG. 6, the other side surface 24b of the box mounting portion 24 has a cylindrical recess 26 formed coaxially with the protrusion 25 formed on the opposite side surface.

[0040] 7 and 9, a recess receiving portion 38 that protrudes in a cylindrical shape with a circular cross section is formed on the other side surface 37b of the arm member storage portion 37 at a position that matches the recess 26 of the box mounting portion 24. Also, a tip groove portion 38a that engages with a first engagement protrusion 43 of the cap 40 described later is formed in one location on the tip portion of the recess receiving portion 38. Note that the tip groove portion 38a is not limited to being formed in one location.

[0041] As shown in FIG. 9, the inner surface of the recess receiving portion 38 is coaxially formed with a small diameter portion 38b formed on the box mounting portion 24 side, a large diameter portion 38d having a diameter larger than that of the small diameter portion 38b, and an inclined portion 38c connecting the small diameter portion 38b and the large diameter portion 38d, and an inner groove portion 38e is formed circumferentially in the large diameter portion 38d.

[0042] 7, 8 and 9, cap 40, which penetrates recessed receiving portion 38 of arm member storage portion 37 and is inserted into, engaged with and fitted into recess 26 of box mounting portion 24, has a body portion 41 which penetrates recessed receiving portion 38 and a flange portion 42 on which a first engaging protrusion 43 is formed which engages with tip groove portion 38a of recessed receiving portion 38. The diameter of flange portion 42 of cap 40 is larger than the diameter of body portion 41.

[0043] The body 41 is coaxially formed with a first body 41a that penetrates the small diameter portion 38b of the recess receiving portion 38 and is inserted into the recess 26 of the box mounting portion 24 to engage with the box mounting portion 24, a second body 41b that penetrates the large diameter portion 38d of the recess receiving portion 38, and a third body 41c that penetrates the inclined portion 38c of the recess receiving portion 38.

[0044] 9, the first body 41a, the second body 41b, the third body 41c and the flange 42 are formed with a hollow portion 46 having an opening on the flange 42 side, and this hollow portion 46 allows slight deformation in the inward direction, making it easier to fit the cap 40 into the recessed receiving portion 38. At the same time, the weight of the cap 40 can be reduced. Note that the cap 40 may be solid without forming the hollow portion 46.

[0045] 9, the angle α between the small diameter portion 38b and the inclined portion 38c of the recessed portion receiving portion 38 is larger than the angle β between the first body portion 41a and the third body portion 41c of the cap 40. This allows the length of the cap 40 and the protruding length of the recessed portion receiving portion 38 to be shortened, and the weight of the cap 40 and the recessed portion receiving portion 38 can be reduced.

[0046] Also, a second engaging protrusion 44 that engages with the inner groove 38e of the recessed receiving portion 38 is formed on the second body portion 41b. Note that the "engaging protrusion" recited in claim 4 of the claims corresponds to the "second engaging protrusion 44" in this embodiment. The second engaging protrusion 44 is formed at a position that matches the inner groove 38e of the recessed receiving portion 38 when the cap 40 is fitted into the recessed receiving portion 38.

[0047] Furthermore, as shown in Figs. 8 and 9, the third body 41c is provided with a sealing portion 45 that protrudes in a tapered shape at its tip end and is formed in a circumferential shape. The sealing portion 45 is shaped such that the outer surface 45a has a convex arc shape and approaches the first body 41a downward. On the other hand, the inner surface 45b is formed substantially parallel to the first body 41a. As a result, when the tip end of the sealing portion 45 contacts the inclined portion 38c of the recessed receiving portion 38 of the arm member storage portion 37 and the cap 40 is further pressed in, the sealing portion 45 deforms so as to bend toward the first body 41a along the inclination of the inclined portion 38c and elastically contacts the inclined portion 38c, thereby reliably sealing between the sealing portion 45 and the inclined portion 38c.

[0048] The fin shape of the seal portion 45 is not limited to a shape in which the outer surface 45a has a convex arc shape and approaches the first body portion 41a downward, as long as the seal portion 45 can bend toward the first body portion 41a along the inclination of the inclined portion 38c when the tip of the seal portion 45 contacts the inclined portion 38c of the recessed receiving portion 38 of the arm member storage portion 37 and the cap 40 is further pressed in. For example, in Fig. 8, (1) a shape in which the outer surface 45a and the inner surface 45b both linearly approach the first body portion 41a downward, or (2) a shape in which the outer surface 45a extends vertically downward and the inner surface 45b extends in a direction away from the first body portion 41a, etc. are also possible.

[0049] In this embodiment, the arm member 20 is made of nylon, and the cap 40 is made of PP (polypropylene). The first body 41a (polypropylene) of the cap 40 is inserted into the recess 26 (nylon) of the box mounting part 24, and the box mounting part 24 rotates, but since both parts are made of different materials, it is possible to prevent both the first body 41a of the cap 40 and the recess 26 of the box mounting part 24, which are engaged, from wearing out and causing rattling over time. Note that the materials of the arm member 20 and the cap 40 may be different, and are not limited to the above-mentioned nylon and PP.

[0050] Next, the attachment of the arm member 20 to the arm member storage section 37 of the box 30 will be described below. First, the box mounting section 24 side of the arm member 20 is inserted into the arm member storage section 37 from the box main body section 31 side of the box 30. At the same time, the convex section 25 of the box mounting section 24 is inserted into the arm member guide section 34 of the box mounting section 24 of the arm member storage section 37.

[0051] When the protrusion 25 of the box mounting part 24 is slid along the arm member guide part 34, the protrusion 25 comes into contact with a narrow width part 34a, which is recessed on both sides so that the width is slightly smaller than the diameter of the protrusion 25, and a protrusion part 34b, which protrudes inward (in a direction perpendicular to the narrow width part 34a). When the protrusion 25 is further pressed, the narrow width part 34a is slightly bent, and the protrusion 25 passes over the protrusion 34b and enters the protrusion receiving part 35 located behind it. At this time, a recess 26 is formed coaxially on the side surface 24b opposite to the box mounting part 24 on which the protrusion 25 is formed, and a recess receiving part 38 is formed on the side surface 37b of the opposing arm member storage part 37.

[0052] Next, the body 41 of the cap 40 is inserted into the recessed portion receiving portion 38 from the first body 41a side. The first body 41a passes through the large diameter portion 38d, the inclined portion 38c and the small diameter portion 38b of the recessed portion receiving portion 38, and is inserted into the recessed portion 26 of the box mounting portion 24 of the arm member 20. Before or after the insertion of the box mounting portion 24 into the recessed portion 26 (this may be before or after), the second engaging protrusion 44 formed on the second body 41b of the cap 40 comes into contact with the tip portion of the recessed portion receiving portion 38.

[0053] When the cap 40 is further pressed in, the second engagement protrusion 44 bends and slides within the large diameter portion 38d. Then, the first engagement protrusion 43 formed on the flange portion 42 of the cap 40 comes into contact with the tip portion of the recess receiving portion 38, and the sliding stops.

[0054] When the flange 42 is rotated and the first engagement protrusion 43 formed on the flange 42 is aligned with the position of the tip groove 38a formed in the tip portion of the recessed receiver 38, the first engagement protrusion 43 is able to slide further inside the large diameter portion 38d. Then, the cap 40 is fixed by the second engagement protrusion 44 entering the inner groove 38e formed in the large diameter portion 38d of the recessed receiver 38. Note that if the first engagement protrusion 43 of the flange 42 of the cap 40 is aligned with the position of the tip groove 38a of the recessed receiver 38 beforehand and the cap 40 is pushed in, the rotation of the flange 42 described above is not necessary.

[0055] Furthermore, when the second engagement protrusion 44 slides further within the second body portion 41b, the seal portion 45 formed on the third body portion 41c of the cap 40 abuts against the inclined portion 38c of the recess receiving portion 38, curves and bends, and elastically contacts the inclined portion 38c.

[0056] As a result, when the cap 40 is inserted into the recess 26 of the box mounting part 24, the cylindrical protrusion 25 formed on one side surface 24a of the box mounting part 24 is pressed against the back side of the protrusion receiving part 35 of the arm member storage part 37 (the other side surface 37b side of the arm member storage part 37), and the protrusion 25 and the protrusion receiving part 35 approach or come into contact with each other. Then, the clearance between the protrusion 25 and the protrusion receiving part 35 becomes small or disappears, so that the box mounting part 24 can rotate within the protrusion receiving part 35 of the arm member storage part 37 without rattling.

[0057] Furthermore, the cap 40 is fixed to the recess receiving portion 38 by the engagement between the tip groove portion 38a of the recess receiving portion 38 and the first engagement protrusion 43 of the cap 40, thereby preventing the cap 40 from rotating within the recess receiving portion 38 due to the rotation of the arm member 20 accompanying the opening and closing of the lid 10.

[0058] In addition, the second engagement protrusion 44 formed on the side of the second body portion 41b of the body portion 41 engages with the inner groove portion 38e of the recessed receiving portion 38, thereby preventing the cap 40 from coming off the recessed receiving portion 38 of the arm member storage portion 37 due to opening and closing of the lid 10, vibrations during travel, etc.

[0059] Furthermore, since the sealing portion 45 formed on the third body portion 41c of the cap 40 elastically contacts the inclined portion 38c of the recess receiving portion 38, even if water infiltrates into the box mounting portion 24 from between the flange portion 42 of the cap 40 and the recess receiving portion 38, water can be prevented from entering between the recess 26 of the box mounting portion 24 and the first body portion 41a of the cap 40.

[0060] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the object of the present invention.

[0061] For example, in the above embodiment, the seal portion 45 formed on the third body portion 41c of the cap 40 is formed to have a tapered shape in cross section, but it may be formed to have a semicircular shape. In this case, the contact surface of the semicircular seal portion 45 with the inclined portion 38c of the recess receiving portion 38 is slightly crushed to seal the gap with the inclined portion 38c.

[0062] For example, with regard to the recess receiving portion 38 of the arm member storage portion 37 and the cap 40, it is possible not to provide a tip groove portion 38a on the recess receiving portion 38 of the arm member storage portion 37, and not to form the first engagement protrusion 43 at the lower portion of the flange portion 42 of the cap 40, and to simply insert the cap 40 into the recess receiving portion 38, so that the body portion 41 of the cap 40 fits into the recess 26 of the box mounting portion 24.

[0063] For example, in the above embodiment, a recess receiving portion 38 that matches the recess 26 of the box mounting portion 24 is formed on one side surface (37b) of the arm member storage portion 37, and a recess 26 is formed on one side surface (24b) of the box mounting portion 24, but it is also possible to form recess receiving portions 38 on both side surfaces of the arm member storage portion 37, form recesses 26 on both sides of the box mounting portion 24, and fix the box mounting portion 24 to the arm member storage portion 37 with caps 40 from both sides.

[0064] For example, in the above embodiment, the second engagement protrusion 44 of the second body 41b of the cap 40 is formed circumferentially like the inner groove 38e of the recessed receiving portion 38, but it may be formed partially, for example, in a line or dot shape, as long as it matches the inner groove 38e. This is because the second engagement protrusion 44 becomes more easily flexible within the large diameter portion 38d of the recessed receiving portion 38 and easier to pass through. [Explanation of symbols]

[0065] 10 Lid 20 Arm components 23 Box mounting arm 24 Box mounting part 25 Convex 26 Recess 30 Box 34 Arm member guide part 37 Arm component storage section 38 Recessed receiving part 38a Tip groove 38b Small diameter section 38c slope section 38d Large diameter section 38e Inner groove 40 Cap 41 Torso 41a First body 41b 2nd torso 41c Third torso 42 Flange 43 1st engagement convex part 44 Second engagement convex part 45 Seal part 46 Cavity

Claims

1. A lid that covers a fuel filler port, charging port or filling port of a vehicle body has an arm member formed with a box mounting portion, and a box having a box main body portion with an opening and an arm member storage portion that stores the arm member is attached to the fuel filler port, charging port or filling port of the vehicle body, and a cap that penetrates the arm member storage portion is fitted into the box mounting portion, thereby enabling the lid to be opened and closed with the box mounting portion as a rotation center, A cylindrical recess is formed on at least one side surface of the box mounting portion, A cylindrical recessed receiving portion having a circular cross section is formed on a side surface of the arm member storage portion at a position that matches the recessed portion of the box mounting portion, and an inner surface of the recessed receiving portion is A small diameter portion formed on the box mounting portion side; A large diameter portion having a diameter larger than that of the small diameter portion; a sloped portion connecting the small diameter portion and the large diameter portion is formed coaxially; The cap has a body portion that penetrates the recess receiving portion of the arm member storage portion and is inserted into the recess of the box mounting portion, and the body portion is a first body portion that penetrates the small diameter portion of the recess receiving portion and is inserted into and engaged with the recess of the box mounting portion; A second body portion that penetrates the large diameter portion; A third body portion is formed coaxially through the inclined portion, A lid mounting structure, characterized in that the third body portion has a sealing portion that protrudes circumferentially and elastically contacts the inclined portion when the cap is fitted into the recessed receiving portion.

2. The lid attachment structure according to claim 1 , wherein the sealing portion formed on the third body portion of the cap has a tip portion that protrudes in a tapered shape in cross section.

3. 3. The lid attachment structure according to claim 1, wherein an angle between the small diameter portion and the inclined portion of the recess receiving portion is larger than an angle between the first body portion and the third body portion of the cap.

4. an inner groove is formed circumferentially on the large diameter portion of the recess receiving portion of the arm member storage portion; an engaging protrusion is formed on an outer surface of the second body of the cap at a position that matches the inner groove of the recessed receiving portion when the cap is fitted into the recessed receiving portion; The lid mounting structure according to claim 1 , wherein the inner groove and the engaging protrusion are engaged with each other.

5. The lid mounting structure according to claim 1 , wherein the cap and the box mounting portion are formed of different materials.

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