JP7312520B2 - Lid mounting structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lid mounting structure for opening and closing a lid that closes a fuel filler port, charging port, etc., of a vehicle body such as an automobile.

When refueling a fuel tank for an automobile, open a fuel filler cap that closes the fuel filler port provided in the vehicle body, remove the fuel cap, and refuel from the fuel filler port. When charging an electric vehicle or PHV (plug-in hybrid vehicle) with electricity, 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 for charging.

As a lid mounting structure of this type, the technique disclosed in Patent Document 1 will be described with reference to FIGS. 1 to 5. FIG. An arm member attachment portion 13 of the lid 10 for attaching an arm member 20, which is an attachment member of the lid 10, is provided on the rear surface 12 of the lid 10 (fuel filler port lid). The arm member mounting portion 13 of the lid 10 is provided with an arm member mounting hole 14 of the lid 10 to which the arm member 20 is mounted.

The arm member 20 has a box mounting arm 23 of the plate-shaped arm member 20 curved in an arc shape, a lid mounting portion 21 of the arm member 20 which is formed at one end of the box mounting arm 23 and which is mounted to the lid 10, and a box mounting portion 24 of the arm member 20 which is formed at the other end of the box mounting arm 23 and is mounted to the box 30 (filler box). The lid attachment portion 21 is fitted into the lid 10 to attach the lid 10 to the arm member 20 .

The box mounting portion 24 of the arm member 20 is formed with a box engaging pin 250 of the arm member 20 that engages with the arm member engaging portion 350 of the box 30, as shown in FIG. The box engaging pins 250 are formed on both side surfaces of the tip of the box attachment portion 24 .

On the other hand, as shown in FIG. 1, the box body 31 (fuel port box body) is formed with a fuel filler hole 36 in the center of the bottom for inserting a fuel gun that communicates with the fuel filler port 1 of the vehicle body 2, and a portion of the box 30 to which the box attachment portion 24 of the arm member 20 is attached is formed as an arm member storage portion 37 of the box 30 by entering inside the vehicle body 2 (left side in FIG. 1) from the portion where the box holding portion 3 of the vehicle body 2 is formed.

3, the arm member storage portion 37 of the box 30 is formed with an arm member guide portion 34 for guiding the box engagement pin 250 of the arm member 20 from the box body 31 to the arm member engagement portion 350, and has the arm member engagement portion 350 that engages the box engagement pin 250 of the arm member 20.

Since the arm member guide part 34 is formed, when the arm member 20 is attached to the box 30, the arm member 20 can be easily assembled to the box 30 by inserting the box engagement pin 250 of the arm member 20 into the arm member guide part 34 and sliding the arm member 20 even if the back of the arm member storage part 37 of the box 30 is difficult to see.

JP 2019-85060 A

In Patent Document 1, the arm member guide portion 34 is formed in the arm member storage portion 37 of the box 30, and the box engagement pin 250 of the arm member 20 passes through the arm member guide portion 34, thereby making it easy to attach the lid 10 to the box 30. However, since 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. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a cover attachment structure that eliminates looseness without impairing the ease of attaching a fuel filler port, charging port, etc. to a box.

In order to solve the above-mentioned problems, the present invention of claim 1 is a lid attachment structure in which an arm member is attached to a lid that closes a fuel filler port or a charging port of a vehicle body, a box having an opening is attached to the fuel filler port or the charging port of the vehicle body, and the arm member is attached to the box so that the lid can be opened and closed. The box has a box main body including an opening, and an arm member storage portion extending from the box main body. On one side of the arm member storage portion, an arm member guide portion for guiding the convex portion of the box mounting portion protrudes. a concave receiving portion having a concave portion is formed, and the convex portion of the box attachment portion engages with the convex portion receiving portion of the arm member guide portion;The cap has a body and a brim formed at the tip of the body.The lid attachment structure is characterized in that the arm member is attached to the box by fitting.

In the first aspect of the present invention, the convex portion protruding in a cylindrical shape is formed on one side surface of the tip portion of the box mounting portion, the arm member storage portion extending from the box main body is formed in the box, and the arm member guide portion for guiding the convex portion of the box mounting portion is formed on one side surface of the arm member storage portion. The arm member can be easily assembled in the arm member storage portion of the box that does not have the arm member.

On the other side of the box mounting portion, a cylindrical concave portion is formed coaxially with the convex portion of the box mounting portion. On the other side surface of the arm member housing portion, a concave portion receiving portion is formed at a position corresponding to the concave portion of the box mounting portion and has an opening at the top. The arm member can be attached to the box by inserting and fitting it into the recess of the part.

As a result, when the barrel of the cap is inserted into the concave portion of the box mounting portion, the cap pushes the columnar projection formed on one side surface of the box mounting portion toward the back side of the projection receiving portion of the arm member guide portion, and the projection and the projection receiving portion come close to each other or come into contact with each other. Since the clearance between the convex part and the convex part receiving part is reduced or eliminated, it is possible to prevent the box attachment part from rattling in the convex part receiving part of the arm member storage part, and to improve the problem that the lid is difficult to close.

According to a second aspect of the present invention, an inner groove is formed in a circumferential shape inside the recess receiving portion of the arm member housing, and a first engagement protrusion is formed on the side surface of the body of the cap at a position that engages with the inner groove of the recess receiving portion, and the inner groove and the first engagement protrusion are engaged with each other.

In the second aspect of the present invention, an inner groove is formed in a circumferential shape inside the recessed receiving portion of the arm member housing, and a first engagement protrusion is formed on the side surface of the barrel of the cap at a position that engages with the inner groove of the arm member housing. The first engaging projection of the cap may be formed in a circumferential shape similar to the circumferential inner groove formed in the recess receiving portion of the arm member housing portion, or may be partially formed, for example, in a line shape or a dot shape at a position matching the circumferential inner groove portion of the arm member housing portion.

According to a third aspect of the present invention, the recess receiving portion of the arm member housing portion has a cylindrical shape, a tip groove is formed at the tip of the recess receiving portion, and a second engagement protrusion is formed at a portion of the lower portion of the brim of the cap that matches the tip groove, and the tip groove of the recess receiving portion and the second engagement protrusion of the cap are engaged with each other.

When the recess receiving portion of the arm member housing portion has a cylindrical shape, the body portion of the cap also has a cylindrical shape. As a result, the arm member rotates as the lid opens and closes, causing the cap to rotate within the recess receiving portion of the arm member housing portion, and the cap tends to come off due to wear. According to the third aspect of the present invention, a tip groove is formed in the tip portion of the recess receiving portion of the arm member housing, and a second engagement projection is formed in a portion matching the tip groove in the lower portion of the flange of the cap. Since the tip groove of the recess reception and the second engagement projection of the cap are engaged, it is possible to prevent the cap from rotating within the recess reception of the arm housing due to the rotation of the arm member accompanying the opening and closing of the lid, thereby preventing the cap from coming off.

According to a fourth aspect of the present invention, the tip portion of the recess receiving portion is formed with a tip projection at a position other than the position where the tip groove is formed, and the collar portion of the cap is formed with an engaging recess at a portion that engages with the tip projection of the recess receiving portion, and the lid mounting structure is such that the tip projection and the engagement recess are engaged.

When the recess receiving portion of the arm member housing portion has a cylindrical shape, the body portion of the cap also has a cylindrical shape. Therefore, in the case where the second engagement protrusion is formed at the lower portion of the collar portion of the cap that matches the tip groove, in order to engage the tip groove of the recess receiving portion with the second engagement protrusion of the cap, it is necessary to fit the cap into the recess receiving portion of the arm member storage while turning the cap over and checking the position of the second engagement protrusion of the cap each time.

In the fourth aspect of the present invention, the tip portion of the recess receiving portion is formed with a tip protrusion at a portion other than the position where the tip groove is formed, and the engagement recess is formed at a portion of the flange of the cap that matches the tip protrusion of the recess receiving portion. Therefore, it is not necessary to turn over the cap to confirm the position of the second engagement protrusion at the bottom of the flange, and the cap can be easily fitted into the recess reception portion of the arm member housing.

According to a fifth aspect of the present invention, the body portion of the cap has a penetrating portion that penetrates the recessed receiving portion of the arm member housing, and an inserting portion having a smaller diameter than the width of the penetrating portion that is inserted into the recessed portion of the box mounting portion.

When inserting the cap into the recess of the box mounting portion, it is necessary to confirm the position of the recess of the box mounting portion from the side of the recess receiving portion of the arm member housing portion. If the diameter of the recessed portion of the box mounting portion is the same as the inner width of the recessed portion receiving portion of the arm member storage portion (the inner diameter of the recessed portion receiving portion if the recessed portion receiving portion is cylindrical), it is difficult to confirm the position of the recessed portion of the box mounting portion.

According to the fifth aspect of the present invention, the barrel portion of the cap is coaxially formed with the penetrating portion that penetrates the recess receiving portion of the arm member housing and the insertion portion having a diameter smaller than the width of the penetrating portion that is inserted into the recess of the box mounting portion. Therefore, the position of the recess of the box mounting portion can be easily confirmed from the recess receiving portion of the arm member housing, and the workability of inserting the cap into the recess of the box mounting portion is improved.

In addition, when the insertion portion is inserted into the recess of the box mounting portion, the stepped portion between the penetrating portion of the cap and the insertion portion pushes the convex portion protruding in a cylindrical shape formed on one side surface of the box mounting portion toward the back side of the convex portion receiving portion of the arm member housing portion, and the convex portion and the convex portion receiving portion approach or come into contact with each other. Since the clearance between the convex part and the convex part receiving part is reduced or eliminated, it is possible to prevent the box attachment part from rattling in the convex part receiving part of the arm member storage part, and to improve the problem that the lid is difficult to close.

The sixth aspect of the present invention is a lid attachment structure in which the cap and the box attachment portion are made of different materials. If the cap and the box mounting portion are made of the same material, both the engaging cap and the concave portion of the box mounting portion are likely to be worn. According to the sixth aspect of the present invention, the cap and the box mounting portion are made of different materials, so that it is possible to prevent the recesses of the cap and the box mounting portion, which engage with each other, from wearing out and rattling over time.

On one side of the front end of the box mounting portion, a projection projecting in a cylindrical shape is formed. The box is formed with an arm member storage portion extending from the box main body. One side surface of the arm member storage portion is formed with an arm member guide portion for guiding the projection of the box mounting portion. , the arm member can be easily assembled.

On the other side of the box mounting portion, a cylindrical concave portion is formed coaxially with the convex portion of the box mounting portion. On the other side surface of the arm member housing portion, a concave portion receiving portion is formed at a position corresponding to the concave portion of the box mounting portion and has an opening at the top thereof. The arm member can be attached to the box by inserting and fitting it into the recess of the part.

As a result, when the barrel of the cap is inserted into the concave portion of the box mounting portion, the cap pushes the columnar projection formed on one side surface of the box mounting portion toward the back side of the projection receiving portion of the arm member guide portion, and the projection and the projection receiving portion come close to each other or come into contact with each other. Since the clearance between the convex part and the convex part receiving part is reduced or eliminated, it is possible to prevent the box attachment part from rattling in the convex part receiving part of the arm member storage part, and to improve the problem that the lid is difficult to close.

FIG. 4 is a cross-sectional view of the box with the lid open, the lid, and the mounting arm member; FIG. 4 is an enlarged cross-sectional view of the mounting arm member and the mounting portion of the box with the lid opened. It is a perspective view of one side of an arm member storage part. It is a perspective view of one side of a box attachment part. FIG. 4 is a cross-sectional view of the vicinity of a convex portion (box engagement pin) of the box mounting portion; It is a perspective view of the other side of the arm member housing, showing the first embodiment of the present invention. It is a perspective view of the other side of the box mounting portion, showing the first embodiment of the present invention. FIG. 4, which shows the first embodiment of the present invention, is a cross-sectional view of the vicinity of the recess of the box mounting portion on the other side surface of the arm member housing portion. FIG. 9 is a cross-sectional view taken along the line AA in FIG. 8; It is a perspective view of the other side of the arm member housing, showing the second embodiment of the present invention. FIG. 8, which shows a second embodiment of the present invention, is a cross-sectional view of the vicinity of the concave portion of the box mounting portion on the other side surface of the arm member housing portion. FIG. 10 is a cross-sectional view taken along the line BB in FIG. 9;

The following embodiment describes the mounting structure of the lid 10 that closes the fuel filler port 1 of the vehicle body 2 (fuel filler port lid), but it can also be used as a charging port when charging electricity to an electric vehicle or a PHV (plug-in hybrid vehicle).

As shown in FIG. 1 , the lid 10 is formed to match the shape of the fuel filler opening 1 of the vehicle body 2 so as to close the fuel filler opening 1 . When refueling a fuel tank for an automobile, a lid 10 closing a refueling port 1 provided in a vehicle body 2 is opened and fuel is refueled from the refueling port 1.例文帳に追加

The back surface 12 of the lid 10 is provided with an arm member attachment portion 13 of the lid 10 for attaching an arm member 20 as an attachment member of the lid 10 . In this embodiment, the arm member mounting portion 13 of the lid 10 is formed as two parallel plates. The arm member mounting portion 13 is provided with an arm member mounting hole 14 of the lid 10 to which the arm member 20 is mounted.

1 and 2, the arm member 20 has a box mounting arm 23 curved in an arc shape, a lid mounting portion 21 formed at one end of the box mounting arm 23 and mounted to the lid 10, and a box mounting portion 24 of the arm member 20 formed at the other end of the box mounting arm 23 and mounted to the box 30. The lid attachment portion 21 is fitted into the arm member attachment hole 14 of the lid 10 to attach the lid 10 to the arm member 20 .

The lid 10 and the arm member 20 can be integrally formed, the lid attachment portion 21 of the arm member 20 and the arm member attachment hole 14 of the lid 10 can be omitted, and the lid attachment portion 21 of the arm member 20 can be integrally formed on the rear surface 12 of the lid 10. In this case, since the lid attachment part 21 of the arm member 20 is integrally formed on the rear surface 12 of the lid 10, the connection structure between the lid 10 and the arm member 20 is simplified, the number of parts is reduced, and the weight can be reduced.

A lid lock portion 22 of the arm member 20 extending toward the box 30 is formed at the tip of the lid attachment portion 21 of the arm member 20 . The lid lock portion 22 engages with a lock pin 32 of the box 30, which will be described later, of the box 30 when the lid 10 is closed.

A portion of the box 30 to which the box attachment portion 24 of the arm member 20 is attached is formed as an arm member storage portion 37 of the box 30 by entering the inside of the vehicle body 2 (left side in FIG. 1) from the portion where the box holding portion 3 of the vehicle body 2 is formed. Details of the arm member housing portion 37 will be described later.

A lock pin 32 is formed on the side opposite to the arm member storage part 37 of the box 30, and when the lid 10 is closed, the lock pin 32 engages with the lid lock part 22 of the arm member 20 to lock the lid 10.例文帳に追加When opening the lid 10 , the lock pin 32 of the box 30 is retracted and disengaged from the lid lock portion 22 of the arm member 20 .

A sealing member 33 is attached around the upper end of the box body 31, and when the box body 31 is attached to the box holding part 3 of the vehicle body 2, the upper end of the box holding part 3 and the box body 31 can be sealed.

As shown in FIGS. 3 and 5, one side surface 37a of the arm member housing portion 37 is formed with an arm member guide portion 34 that projects from the box body 31 to guide the cylindrical projection 25 formed on the box mounting portion 24 of the arm member 20. A projection receiving portion 35 that engages with the cylindrical projection 25 formed on the box mounting portion 24 of the arm member 20 is formed at the tip of the arm member guide portion 34.

The width of the arm member guide portion 34 through which the convex portion 25 of the box mounting portion 24 passes is slightly larger than the diameter of the convex portion 25 so that the convex portion 25 can easily pass through. A connecting portion between the arm member guide portion 34 and the convex portion receiving portion 35 is formed with a narrow width portion 34 a having a width slightly smaller than the diameter of the convex portion 25 and recessed on both sides. The convex portion 25 is fitted into the convex portion receiving portion 35 and the convex portion 25 is prevented from coming off from the convex portion receiving portion 35 by pushing the convex portion 25 into the narrow portion 34a and allowing the narrow portion 34a to bend slightly to allow the convex portion 25 to pass therethrough. The width of the projection receiving portion 35 of the arm member guide portion 34 is formed to be substantially the same as the diameter of the projection 25, thereby suppressing displacement of the projection 25 within the projection receiving portion 35. FIG.

Further, as shown in FIGS. 3 and 5, a projecting portion 34b having an inclined surface toward the box body 31 is formed inwardly (in a direction perpendicular to the narrow width portion 34a) from the outer surface of the portion where the narrow width portion 34a of the connecting portion between the arm member guide portion 34 and the convex portion receiving portion 35 of the box 30 is formed.

As shown in FIG. 4, one side surface 24a of the box mounting portion 24 of the arm member 20 is formed with a convex portion 25 protruding in a cylindrical shape. Further, a convex slope 25a is formed at the tip portion thereof by cutting in the shape of a slope. Since the protrusion slope 25 a makes it easier for the protrusion 25 to climb over the protrusion 34 b of the arm member guide section 34 , the arm member 20 can be easily attached to the protrusion receiving section 35 of the box 30 . Note that the convex slope 25a may not be formed.

On the other hand, as shown in FIG. 7 , a columnar concave portion 26 is formed coaxially with the convex portion 25 on the other side surface 24 b of the box mounting portion 24 . As shown in FIGS. 6, 8, and 9, the other side surface 37b of the arm member housing portion 37 is formed with a recess receiving portion 38 having an opening at the top and protruding in a cylindrical shape at a position corresponding to the recess 26 of the box mounting portion 24. Two tip groove portions 38a are formed in the tip portion of the recess receiving portion 38. As shown in FIG. Note that the number of tip grooves 38a is not limited to two. Further, as shown in FIGS. 6 and 8, an inner groove portion 38b is formed in a circumferential shape inside the recess receiving portion 38. As shown in FIG.

As shown in FIGS. 6, 8 and 9, a cap 40 that passes through the recess receiving portion 38 and is inserted into the recess 26 of the box mounting portion 24 is fitted into the recess receiving portion 38 on the other side surface 37b of the arm member housing portion 37, so that the arm member 20 can be attached to the projection receiving portion 35 of the arm member housing portion 37 of the box 30. The cap 40 is composed of a cylindrical barrel portion 41 and a collar portion 42 formed at the tip portion of the barrel portion 41 . The diameter of the collar portion 42 of the cap 40 is larger than the diameter of the body portion 41 .

The diameter of the body portion 41 of the cap 40 is slightly smaller than the diameter of the recess 26 of the box mounting portion 24 . Also, the length of the trunk portion 41 is set so as to contact the bottom portion of the recess 26 of the box mounting portion 24 . As a result, when the cap 40 is inserted into the recess 26 of the box mounting portion 24, the convex portion 25 protruding in a cylindrical shape formed on one side surface 24a of the box mounting portion 24 is pushed toward the back side of the convex portion receiving portion 35 of the arm member housing portion 37 (the other side surface 37b side of the arm member housing portion 37), so that the convex portion 25 and the convex portion receiving portion 35 approach or come into contact with each other. Since the clearance between the convex portion 25 and the convex portion receiving portion 35 is reduced or eliminated, the box attachment portion 24 can be rotated within the convex portion receiving portion 35 of the arm member housing portion 37 without rattling.

A second engagement projection 44 is formed in the lower portion of the flange 42 at a portion that matches the tip groove 38a of the recess receiving portion 38 of the arm member housing portion 37. As shown in FIG. Since 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 second engagement projection 44 of the cap 40, it is possible to prevent 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, thereby preventing the cap 40 from coming off.

A first engagement projection 43 is formed on the side surface of the trunk portion 41 at a position where it engages with the inner groove portion 38b of the recess receiving portion 38 . As a result, the first engaging projection 43 of the trunk portion 41 and the inner groove portion 38b of the recess receiving portion 38 are engaged with each other, so that the cap 40 can be prevented from slipping out of the recess receiving portion 38 of the arm member housing portion 37. In the drawing, the first engaging projection 43 of the cap 40 is formed in a circumferential shape similar to the inner groove 38b of the recess receiving portion 38 of the arm member housing portion 37, but it may be formed partially, for example, in a line shape or a dot shape as long as the position matches the circumferential inner groove portion 38b of the recess receiving portion 38 of the arm member housing portion 37.

Nylon was used for the arm member 20 and PP (polypropylene) was used for the cap 40 . The body portion 41 (polypropylene) of the cap 40 is inserted into the concave portion 26 (nylon) of the box mounting portion 24, and the box mounting portion 24 rotates. However, since both members are made of different materials, it is possible to prevent the body portion 41 of the cap 40 and the concave portion 26 of the box mounting portion 24 from wearing and rattling over time. The materials of the arm member 20 and the cap 40 are not limited to nylon and PP as long as they are different.

Figures 9-12 show a second embodiment of the invention. Differences between the second embodiment and the first embodiment are as follows, and other parts are the same as those of the first embodiment.

First, the inner diameter of the recess receiving portion 38 of the arm member housing portion 37 is larger than the diameter of the recess 26 of the box mounting portion 24 . Secondly, at the tip portion of the concave portion receiving portion 38 of the arm member housing portion 37, a tip projection portion 39 is formed at a portion other than the position where the tip groove portion 38a is formed. Thirdly, the trunk portion 41 of the cap 40 has a penetrating portion 45 that penetrates the convex portion receiving portion 35 of the arm member housing portion 37, and an insertion portion 46 that is inserted into the concave portion 26 of the box mounting portion 24 and has a diameter smaller than that of the penetrating portion 45. A step portion 48 is formed between the penetrating portion 45 and the insertion portion 46. Fourthly, the collar portion 42 of the cap 40 is formed with an engagement recess 47 at a portion that matches the tip protrusion 39 of the recess receiving portion 38 .

As a result, the position of the recessed portion 26 of the box mounting portion 24 can be easily confirmed from the recessed portion receiving portion 38 of the arm member housing portion 37, thereby improving the workability of inserting the cap 40 into the recessed portion 26 of the box mounting portion 24.

The diameter of the insertion portion 46 of the body portion 41 of the cap 40 is slightly smaller than the diameter of the recess 26 of the box mounting portion 24 . Further, the length of the through portion 45 is set so as to protrude from the recess receiving portion 38 of the arm member housing portion 37 into the arm member housing portion 37 . In FIG. 11, the insertion portion 46 is depicted as contacting the bottom of the recess 26 of the box mounting portion 24, but it does not have to be in contact.

As a result, when the cap 40 is inserted into the recess 26 of the box mounting portion 24, the insertion portion 46 is inserted into the recess 26 of the box mounting portion 24, and the stepped portion 48 between the penetrating portion 45 of the cap 40 and the insertion portion 46 pushes the convex portion 25 formed in one side surface 24a of the box mounting portion 24 into a columnar shape to the rear side of the convex portion receiving portion 35 of the arm member housing portion 37 (the other side surface 37b of the arm member housing portion 37). When pushed, the convex portion 25 and the convex portion receiving portion 35 approach or come into contact with each other. Since the clearance between the convex portion 25 and the convex portion receiving portion 35 is reduced or eliminated, the box attachment portion 24 can be rotated within the convex portion receiving portion 35 of the arm member housing portion 37 without rattling.

In addition, the concave portion receiving portion 38 has a tip convex portion 39 formed at a position other than the position where the tip groove portion 38a is formed, and the flange portion 42 of the cap 40 is formed with an engagement concave portion 47 at a portion that matches the tip convex portion 39 of the concave portion receiving portion 38. Since the tip convex portion 39 of the concave portion receiving portion 38 and the engaging concave portion 47 of the cap 40 are engaged, it is necessary to check the position of the second engaging convex portion 44 at the bottom of the flange portion 42 by turning over the cap 40. Therefore, the cap 40 can be easily fitted into the recess receiving portion 38 of the arm member housing portion 37 .

The implementation of the present invention is not limited to the above embodiments, and various modifications are possible without departing from the object of the present invention.

For example, with respect to the recess receiving portion 38 of the arm member storage portion 37 and the cap 40, the body portion 41 of the cap 40 may be fitted into the recess portion 26 of the box mounting portion 24 by simply inserting the cap 40 into the recess receiving portion 38 without providing the tip groove portion 38a in the recess receiving portion 38 of the arm member storage portion 37 and without forming the second engagement protrusion 44 in the lower portion of the collar portion 42 of the cap 40.

In the above embodiment, on the other side surface 37b of the arm member housing portion 37, the recess receiving portion 38 projecting in a cylindrical shape and having an opening at the top is formed at a position matching the recess 26 of the box mounting portion 24. However, the recess receiving portion 38 may be formed in a columnar shape such as a square column or a hexagonal column instead of a columnar shape. In this case, the body portion 41 of the cap 40 is composed of a columnar penetrating portion 45 passing through the columnar recess receiving portion 38 and a columnar insertion portion 46 .

10 Lid 20 Arm member 23 Box mounting arm 24 Box mounting part 25 Protrusion 26 Recess 30 Box 31 Box body 34 Arm member guide part 35 Protrusion receiving part 37 Arm member storage part 38 Recess receiving part 38a Tip groove 38b Inner groove 39 Tip protrusion 40 Cap 41 Body part 42 Collar 43 First engagement protrusion 44 Second engagement protrusion 45 Through part 46 Insertion portion 47 Engagement concave portion 48 Stepped portion

Claims (6)

An arm member is attached to a lid that closes a fuel filler port or a charging port of a vehicle body, a box having an opening is attached to the fuel filler port or the charging port of the vehicle body, and the arm member is attached to the box to open and close the lid.
the arm member has a lid attachment portion for attaching the lid and a box attachment portion for rotatably attaching the lid to the box;
A cylindrical projection is coaxially formed on one side surface of the tip portion of the box mounting portion and a cylindrical recess is formed on the other side surface,
The box has a box body including the opening and an arm member storage section extending from the box body,
An arm member guide portion that guides the convex portion of the box mounting portion is protrudingly formed on one side surface of the arm member housing portion, and a convex portion receiving portion that accommodates the convex portion of the box mounting portion is formed at the tip portion of the arm member guide portion,
On the other side surface of the arm member housing portion, a recess receiving portion having an opening at the top and protruding in a columnar shape is formed at a position corresponding to the recess of the box mounting portion,
the convex portion of the box mounting portion is engaged with the convex portion receiving portion of the arm member guide portion;
The cap has a body and a collar formed at the tip of the body,
A lid attachment structure, wherein the arm member is attached to the box by inserting and fitting the body portion of the cap through the recess receiving portion of the arm member storage portion from the recess receiving portion side of the arm member storage portion and into the recess of the box attachment portion. 2. The lid mounting structure according to claim 1, wherein an inner groove is formed in a circumferential shape inside the recess receiving portion of the arm member housing, and a first engaging protrusion is formed on a side surface of the body portion of the cap at a position that engages with the inner groove of the recess receiving portion, and the inner groove and the first engaging protrusion are engaged. The mounting structure of the lid according to claim 1 or 2, wherein the recess receiving portion of the arm member housing portion has a cylindrical shape, a tip groove is formed at the tip portion of the recess receiving portion, and a second engagement protrusion is formed in a portion engaging with the tip groove in the lower part of the brim portion of the cap, and the tip groove of the recess receiving portion and the second engagement protrusion of the cap are engaged. 4. The lid mounting structure according to claim 3, wherein the tip portion of the recess receiving portion is formed with a tip protrusion at a position other than the position where the tip groove is formed, and the flange portion of the cap is formed with an engaging recess at a portion that engages with the tip protrusion of the recess receiving portion, and the tip protrusion and the engagement recess are engaged. The lid mounting structure according to any one of claims 1 to 4, wherein the trunk portion of the cap has a penetrating portion penetrating the recess receiving portion of the arm member storage portion and an insertion portion having a smaller diameter than the width of the penetrating portion inserted into the recess of the box mounting portion. The lid attachment structure according to any one of claims 1 to 5, wherein the cap and the box attachment portion are made of different materials.

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