Mounting structure for the cover on the vehicle

Abstract

To provide a structure for attaching a lid to a vehicle in which an assembled state of an arm member and an engagement pin is normally maintained.SOLUTION: A structure 10 for attaching a lid to a vehicle comprises a lid, an arm member 20, and an engagement pin 30. The engagement pin 30 includes a shaft part 70, a first protrusion 80, and a second protrusion 90. The arm member 20 includes an insertion part 40, an engaged part 45, and an enclosure part 60 having a first wall 61 and a pair of second walls 62. When a state of the engagement pin 30 shifts from an attachment precursor state to an attachment state as the shaft part 70 moves in an axial direction A, the second protrusion 90 overrides the engaged part 45 and moves in the axial direction, whereas the first protrusion 80 is accommodated in the enclosure part 60. In the attachment state, the engagement pin 30 is rotated integrally with the arm member 20 according to engagement of the first protrusion 80 and the pair of second walls 62. In the attachment state, return of the engagement pin 30 to the attachment precursor state is inhibited by engagement of the second protrusion 90 and the engaged part 45.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to an attachment structure of a lid for a vehicle that opens and closes an opening provided in a vehicle body.

Background Art

[0002] An attachment structure of a lid for a vehicle includes a lid that opens and closes an opening provided in a vehicle body, an arm member, and an engagement pin. The arm member is integrated with the lid. The arm member rotates as the lid opens and closes the opening. The engagement pin is a shaft-shaped member that serves as the rotation center of the arm member. The engagement pin penetrates through the arm member. The engagement pin engages the arm member with the vehicle body so as to be rotatable.

[0003] Patent Document 1 describes, for example, an attachment structure of a fuel filler lid that opens and closes a fuel filler opening as an opening provided in a vehicle body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the attachment structure of the fuel filler lid, when the engagement pin moves in the axial direction or circumferential direction of the engagement pin due to the vibration of the vehicle body, and the assembled state of the arm member and the engagement pin changes, there is a possibility that the fuel filler lid cannot properly open and close the fuel filler opening. In addition, the same problem occurs even when the opening is a power supply port and the lid is a power supply port lid.

Means for Solving the Problems

[0006] A mounting structure for a vehicle that solves the above problem comprises: a lid for opening and closing an opening provided in the vehicle body; an arm member integrated with the lid and rotating in conjunction with the opening and closing of the opening by the lid; and an engagement pin which is an axial member that serves as the rotation center of the arm member, penetrates the arm member and is rotatable relative to the vehicle body, wherein the engagement pin has a shaft portion extending along an axis, a first projection protruding from the shaft portion in a direction intersecting the axis, and a second projection protruding from the shaft portion in a direction intersecting the axis and provided at a position away from the first projection in the axial direction along the axis, wherein the arm member has an insertion portion that forms a space through which the shaft portion is inserted, an engaged portion protruding from the inner surface of the insertion portion toward the shaft portion, and an enclosure portion having a first wall positioned on the opposite side of the engaged portion from the first projection in the axial direction, and a pair of second walls that extend in the axial direction and face each other, The distance between the first wall and the engaged portion is longer than the distance between the first protrusion and the second protrusion, the first protrusion is sandwiched between the pair of second walls, and the state of the engagement pin when the second protrusion is on the side of the first protrusion relative to the engaged portion in the axial direction is defined as the mounted state, and the state of the engagement pin when the first protrusion is not sandwiched between the pair of second walls, and the second protrusion is on the opposite side of the first protrusion relative to the engaged portion in the axial direction is defined as the pre-mounting state, when the shaft moves in the axial direction and the state of the engagement pin transitions from the pre-mounting state to the mounted state, the second protrusion moves in the axial direction while crossing over the engaged portion, and the first protrusion is housed in the enclosure, and in the mounted state, the engagement between the first protrusion and the pair of second walls causes the engagement pin to rotate integrally with the arm member, and the engagement between the second protrusion and the engaged portion prevents the engagement pin from returning to the pre-mounting state.

[0007] According to the above configuration, when the engaging pin is in the mounted state, even if the engaging pin moves in the direction from the second protrusion toward the first protrusion, the first protrusion engages with the first wall of the enclosure. Also, even if the engaging pin moves in the direction from the first protrusion toward the second protrusion, the second protrusion engages with the engaged portion. Therefore, the engaging pin is less likely to come loose from the arm member, and thus its return to the pre-mounted state is suppressed.

[0008] Furthermore, when the lid is opened and closed relative to the opening, the arm member integrated with the lid rotates. When the engagement pin is in the installed state, the first projection engages with the pair of second walls of the enclosure, causing the arm member and the engagement pin to rotate together. In other words, the engagement pin is less likely to rotate relative to the arm member. As a result, the positional relationship between the first projection and the first wall of the enclosure, and the positional relationship between the second projection and the engaged portion, is suppressed from shifting in the circumferential direction of the shaft. Therefore, the assembled state of the engagement pin and the arm member is maintained correctly. Consequently, the opening provided in the vehicle body can be opened and closed properly using the lid.

[0009] In the above-described mounting structure for the vehicle, the engaging pin may have an engaging portion that engages with the arm member in the pre-mounting state to restrict the second projection from pointing in the axial direction away from the first projection.

[0010] According to the above configuration, when the engaging pin is inserted from the tip of the shaft into the insertion portion, the engaging pin enters a pre-mounting state. In the axial direction, the second projection is on the opposite side from the first projection relative to the engaged portion, but the engaging portion engages with the arm member. Therefore, in the pre-mounting state, the engaging pin is less likely to fall out of the insertion portion of the arm member.

[0011] In the above-described mounting structure for the vehicle, the first projection has side surfaces located on both sides in the circumferential direction of the shaft portion of the first projection, and the second wall has a wall surface along the side surfaces.

[0012] With the above configuration, even if the engaging pin attempts to rotate relative to the arm member, the first projection is less likely to cross the second wall in the circumferential direction. Therefore, the engaging pin becomes less likely to rotate relative to the arm member. As a result, the positional relationship between the first projection and the first wall of the enclosure, and the positional relationship between the second projection and the engaged portion, is less likely to shift in the circumferential direction of the shaft. Therefore, the assembled state of the engaging pin and the arm member is maintained correctly.

[0013] In the above-described mounting structure for a cover on a vehicle, the second projection has an inclined surface provided on the side of the first projection in the axial direction, which extends so as it approaches the first projection in the axial direction, it approaches the axis of the shaft, and an engaging surface provided on the side of the projection opposite to the first projection in the axial direction, which extends in a direction perpendicular to the axis of the shaft.

[0014] With the above configuration, when the engaging pin transitions from the pre-mounting state to the mounted state, the inclined surface of the second projection makes it easier for the second projection to overcome the engaged portion. Furthermore, after the engaging pin is in the mounted state, the engaging surface makes it more difficult for the second projection to overcome the engaged portion. As a result, it becomes easier to maintain the engaging pin in the mounted state. Consequently, the engaging pin transitions more easily from the pre-mounting state to the mounted state, and the engaging pin becomes less likely to come loose from the arm member. [Effects of the Invention]

[0015] According to this invention, the assembled state between the arm member and the engagement pin is maintained in a normal manner. [Brief explanation of the drawing]

[0016] [Figure 1] This is a top view of the mounting structure for the cover on the vehicle. [Figure 2] This is a side view of the engagement pin. [Figure 3] This is a perspective view of the first projection of the engaging pin. [Figure 4] This is a perspective view of the support end of the arm member. [Figure 5] It is a perspective view of the support end portion of the arm member. [Figure 6] It is a cross-sectional view when cut along line 6-6 of FIG. 4. [Figure 7] It is a side view showing the initial state where the engagement pin is inserted into the insertion portion of the arm member. [Figure 8] It is a cross-sectional view when cut along line 8-8 of FIG. 7. [Figure 9] It is a side view when the engagement pin is changed from the initial state to the pre-mounting state. [Figure 10] It is a cross-sectional view when the engagement pin is changed from the pre-mounting state to the mounting state. [Figure 11] It is a cross-sectional view when cut along line 11-11 of FIG. 10. [Figure 12] It is a perspective view of the support end portion of the arm member in a modified example of the mounting structure of the lid to the vehicle. [Figure 13] It is a cross-sectional view showing a modified example of the mounting structure of the lid to the vehicle. [Figure 14] It is a cross-sectional view showing a modified example of the mounting structure of the lid to the vehicle. [Figure 15] It is a cross-sectional view when cut along line 15-15 of FIG. 14.

Mode for Carrying Out the Invention

[0017] [First Embodiment] Hereinafter, a first embodiment in which the mounting structure of the lid to the vehicle is embodied will be described according to FIGS. 1 to 11.

[0018] [Mounting Structure of Lid to Vehicle] As shown in Figure 1, the mounting structure 10 for the cover on the vehicle comprises an arm member 20, a cover 20a, and an axial engagement pin 30. The arm member 20 has a cover 20a, a support end 20b, and a curved portion 20c. The cover 20a is a cover that opens and closes an opening 101 provided in the vehicle body 100. In this embodiment, the cover is part of the arm member 20. The arm member 20 is integrated with the cover 20a. The opening 101 is, for example, a fuel filler port or a power supply port. The arm member 20 and the engagement pin 30 are formed from, for example, a resin material.

[0019] The support end 20b is located inside the vehicle body 100. The engagement pin 30 passes through the support end 20b. The engagement pin 30 passes through the arm member 20. The support end 20b rotates integrally with the engagement pin 30. The engagement pin 30 is rotatable relative to the vehicle body 100.

[0020] The curved portion 20c is the part of the arm member 20 that extends between the lid 20a and the support end 20b. The curved portion 20c is curved so that the arm member 20 does not come into contact with the edge of the opening 101 when the arm member 20 rotates around the engagement pin 30 as the center of rotation. When the arm member 20 rotates around the engagement pin 30 as the center of rotation, the lid 20a opens and closes the opening 101. The engagement pin 30 is the member that becomes the center of rotation of the arm member 20 when the lid 20a opens and closes the opening 101.

[0021] When the lid 20a moves away from the opening 101, causing the opening 101 to open, a portion of the curved portion 20c is exposed to the outside of the vehicle body 100 from the opening 101. When the lid 20a covers the opening 101, causing the opening 101 to close, the curved portion 20c is housed inside the vehicle body 100. Note that the position of the lid 20a shown by the dashed line in Figure 1 indicates a position in the process of fully opening the opening 101.

[0022] <Engaging pin> As shown in Figure 2, the engaging pin 30 has a shaft portion 70, a first projection 80, a second projection 90, and a flange portion 95. The direction along the axis m of the shaft portion 70 is defined as the axial direction A. The direction in which the circle drawn with the axis m of the shaft portion 70 as the center extends is defined as the circumferential direction B. The direction perpendicular to the axis m of the shaft portion 70 is defined as the radial direction C. The shaft portion 70 is a stepped cylindrical shape extending along the axis m.

[0023] The shaft portion 70 has a first shaft 71, a second shaft 72, and a third shaft 73. The first shaft 71, the second shaft 72, and the third shaft 73 are integrally formed in this order in the axial direction A. The diameter of the first shaft 71 is smaller than the diameter of the second shaft 72. The second shaft 72 has an annular extension surface 72a perpendicular to the outer circumferential surface of the first shaft 71. The extension surface 72a extends in the radial direction C. The diameter of the second shaft 72 is smaller than the diameter of the third shaft 73. The third shaft 73 has an annular extension surface 73a perpendicular to the outer circumferential surface of the second shaft 72. The extension surface 73a extends in the radial direction C.

[0024] The first projection 80 protrudes from the second shaft 72. The first projection 80 protrudes from the shaft 70 in a direction intersecting the axis m of the shaft 70. The second projection 90 protrudes from the first shaft 71. The second projection 90 protrudes from the shaft 70 in the opposite direction to the direction in which the first projection 80 protrudes from the shaft 70. The second projection 90 is located at a distance from the first projection 80 in the axial direction A. The second projection 90 is located away from the extending surface 72a of the second shaft 72 in the axial direction A.

[0025] As shown in Figures 2 and 3, the first projection 80 has side surfaces 81. The side surfaces 81 are the surfaces located on both sides of the first projection 80 in the circumferential direction B. The side surfaces 81 extend parallel to each other. The side surfaces 81 extend in the axial direction A. The first projection 80 has end surfaces 82. The end surfaces 82 are the end surfaces of the first projection 80 in the axial direction A. The end surfaces 82 extend parallel to each other. In this embodiment, one of the end surfaces 82 is flush with the extending surface 72a of the second axis 72, and the other end surface 82 is separated from the extending surface 73a of the third axis 73 in the axial direction A. Note that one of the end surfaces 82 does not have to be flush with the extending surface 72a.

[0026] As shown in Figure 2, the second projection 90 has an inclined surface 91 and an engaging surface 92. The inclined surface 91 is provided on the portion of the second projection 90 that is on the side of the first projection 80 in the axial direction A. The inclined surface 91 extends so that it approaches the axis m of the shaft portion 70 as it moves toward the first projection 80 in the axial direction A. The engaging surface 92 is provided on the portion of the second projection 90 that is opposite to the first projection 80 in the axial direction A. In the axial direction A, the distance from the other end face 82 of the first projection 80 to the engaging surface 92 of the second projection 90 is defined as distance L1. Distance L1 is the distance between the first projection 80 and the second projection 90. Although not shown, the width of the second projection 90 in the circumferential direction B is the same as, or smaller than, the width of the first projection 80 in the circumferential direction B.

[0027] The flange portion 95 is in the shape of a long plate. The flange portion 95 is provided at the end of the third shaft 73 opposite to the second shaft 72 in the axial direction A. The flange portion 95 has a first end portion 95a and a second end portion 95b. The first end portion 95a is continuous with the third shaft 73. The second end portion 95b is provided at a position away from the axis m of the shaft portion 70. As shown in Figure 1, when the arm member 20 rotates around the engagement pin 30 as the pivot point, the second end portion 95b of the flange portion 95 swings around the axis m of the engagement pin 30. A spring (not shown) is provided at the second end portion 95b of the flange portion 95. The spring (not shown) is also connected to the vehicle body 100. The spring (not shown) exerts a restoring force that returns the position of the second end portion 95b when the lid 20a is in the open position of the opening 101 to the position of the second end portion 95b when the lid 20a is in the closed position of the opening 101.

[0028] <Arm component> As shown in Figure 4, the arm member 20 has an insertion portion 40, a communication opening 50, and an enclosure portion 60 at its support end 20b.

[0029] A space S is formed inside the support end 20b. Space S is the space through which the shaft portion 70 of the engagement pin 30 shown in Figure 2 is inserted. The first shaft 71 of the engagement pin 30 is inserted into space S. The insertion portion 40 is the part of the arm member 20 that forms space S. The insertion portion 40 is the part through which the shaft portion 70 of the engagement pin 30 is inserted. In describing the configuration of the insertion portion 40, the communication opening 50, and the enclosure portion 60 below, the axial direction A and circumferential direction B of the engagement pin 30 will be used as reference points.

[0030] <Communication opening and insertion section> The communication opening 50 connects the space S to the outside of the support end 20b. The communication opening 50 is formed in a part of the support end 20b.

[0031] The insertion section 40 has a first partition wall 41, a second partition wall 42, a third partition wall 43, and a fourth partition wall 44. The first partition wall 41 and the second partition wall 42 face each other in the axial direction A. The first partition wall 41 and the second partition wall 42 are plate-shaped. The distance between the first partition wall 41 and the second partition wall 42 in the axial direction A is smaller than the length of the axial direction A of the first shaft 71.

[0032] The first partition wall 41 has an outer surface 41a and an inner surface 41b. The outer surface 41a and the inner surface 41b are surfaces located in the thickness direction of the first partition wall 41. The outer surface 41a is a surface located outside the support end 20b in the axial direction A. The inner surface 41b is part of the surface that forms the space S.

[0033] The first compartment wall 41 has a first insertion hole 41c and a notch 41d connected to the first insertion hole 41c. The first insertion hole 41c and the notch 41d penetrate the first compartment wall 41 in the axial direction A. The first insertion hole 41c is a circular hole. The diameter of the first insertion hole 41c is slightly larger than the diameter of the first shaft 71. The diameter of the first insertion hole 41c is smaller than the diameter of the second shaft 72.

[0034] The notch 41d is recessed toward the opposite side from the first insertion hole 41c communication opening 50. The width of the notch 41d in the circumferential direction B is greater than the width of the second projection 90 in the circumferential direction B. The depth of the notch 41d from the arcuate surface that defines the first insertion hole 41c is greater than the amount of the second projection 90 protruding from the first axis 71.

[0035] The second partition wall 42 has an outer surface 42a and an inner surface 42b. The outer surface 42a and the inner surface 42b are surfaces located in the thickness direction of the second partition wall 42. The outer surface 42a is a surface located outside the support end 20b in the axial direction A. The inner surface 42b is part of the surface that forms the space S.

[0036] A second insertion hole 42c is formed in the second compartment wall 42. The axis of the second insertion hole 42c coincides with the axis of the first insertion hole 41c. The second insertion hole 42c is a circular hole. The diameter of the second insertion hole 42c is slightly larger than the diameter of the first shaft 71.

[0037] As shown in Figures 4 and 5, the third partition wall 43 is continuous with the first partition wall 41 and the second partition wall 42 in the axial direction A. The third partition wall 43 is the part of the arm member 20 that is opposite to the lid 20a. The outer surface 43a is continuous with the outer surface 41a of the first partition wall 41 and the outer surface 42a of the second partition wall 42. The inner surface 43b is part of the surface that forms the space S.

[0038] As shown in Figure 4, the fourth partition wall 44 faces the third partition wall 43. The fourth partition wall 44 is continuous with the first partition wall 41 and the second partition wall 42 in the axial direction A. The fourth partition wall 44 has an inner surface 44a. The inner surface 44a is inclined to such an extent that it can be seen from the communication opening 50 when the communication opening 50 is viewed from the front. The inner surface 44a is continuous with the inner surface 41b of the first partition wall 41, the inner surface 42b of the second partition wall 42, and the inner surface 43b of the third partition wall 43. The inner surface 44a is part of the surface that forms the space S. The space S is surrounded by each of the inner surfaces 41b, 42b, 43b, and 44a. The communication opening 50 is formed by being surrounded by the first partition wall 41, the second partition wall 42, the third partition wall 43, and the fourth partition wall 44.

[0039] <Enclosure section> The enclosure portion 60 is provided adjacent to the insertion portion 40 in the axial direction A. The enclosure portion 60 is provided on the outer surface 41a of the first partition wall 41. The enclosure portion 60 is positioned adjacent to the first insertion hole 41c. The enclosure portion 60 is provided on the opposite side from the third partition wall 43 with respect to the first insertion hole 41c. The enclosure portion 60 has a curved surface 60a that curves in accordance with the arc surface that partitions the first insertion hole 41c. The curved surface 60a is shaped along the outer circumferential surface of the second shaft 72 of the engagement pin 30. The distance from the axis m of the shaft portion 70 to the curved surface 60a is the same as the radius of the second shaft 72.

[0040] The enclosure portion 60 has a groove portion 60b that is recessed from the curved surface 60a. The groove portion 60b is recessed from the curved surface 60a. The depth of the groove portion 60b from the curved surface 60a is greater than the amount of the first projection portion 80 protruding from the second axis 72. The enclosure portion 60 has a first wall 61 and a pair of second walls 62. The first wall 61 and the pair of second walls 62 are wall portions that form the groove portion 60b. The first wall 61 faces the first partition wall 41 in the axial direction A. The first wall 61 has a portion of the curved surface 60a. The pair of second walls 62 extend in the axial direction A. The pair of second walls 62 extend from the first wall 61 toward the first partition wall 41 in the axial direction A.

[0041] One of the pair of second walls 62 is designated as the first opposing wall 621, and the other of the pair of second walls 62 is designated as the second opposing wall 622. The first opposing wall 621 and the second opposing wall 622 face each other. The pair of second walls 62 face each other. The first opposing wall 621 has a portion of the curved surface 60a. The first opposing wall 621 is continuous with the first partition wall 41. The second opposing wall 622 has a portion of the curved surface 60a. The second opposing wall 622 is separated from the first partition wall 41. The distance between the second opposing wall 622 and the first partition wall 41 is greater than the distance between the end faces 82 of the first projection 80. The enclosure 60 has a connecting passage 63 between the second opposing wall 622 and the first partition wall 41 that connects the inside and outside of the groove 60b in the circumferential direction B.

[0042] As shown in Figures 4 and 6, the first opposing wall 621 has a first inner wall surface 621a. The first inner wall surface 621a extends in the axial direction A. The second opposing wall 622 has a second inner wall surface 622a. The second inner wall surface 622a extends in the axial direction A. The first inner wall surface 621a and the second inner wall surface 622a are opposite to each other. The first inner wall surface 621a and the second inner wall surface 622a are parallel. The length in the axial direction A of the first inner wall surface 621a and the second inner wall surface 622a is greater than the distance between the end faces 82 of the first projection 80. The distance in the circumferential direction B of the first inner wall surface 621a and the second inner wall surface 622a is slightly greater than the distance between the side faces 81 of the first projection 80.

[0043] <Engaged part> As shown in Figures 5 and 7, the arm member 20 has an engaged portion 45. The engaged portion 45 is a projection provided on the inner surface 43b of the third compartment wall 43. The engaged portion 45 is provided inside the insertion portion 40. The engaged portion 45 protrudes from the inner surface 43b of the third compartment wall 43 toward the shaft portion 70. The inner surface 43b of the third compartment wall 43 is an example of the inner surface of the insertion portion 40. The engaged portion 45 has a first surface 45a and a second surface 45b. The first surface 45a is continuous with the inner surface 43b. The first surface 45a is an inclined surface that extends toward the fourth compartment wall 44 as it approaches the second compartment wall 42 in the axial direction A. The second surface 45b is continuous with the inner surface 43b. The second surface 45b is an inclined surface that extends toward the fourth compartment wall 44 as it approaches the first compartment wall 41 in the axial direction A. The amount of protrusion of the engaged portion 45 from the inner surface 43b is set so that the engaged portion 45 does not come into contact with the first shaft 71. The communication opening 50 is an opening for work purposes provided to form the engaged portion 45 on the inner surface 43b.

[0044] As shown in Figure 7, in the axial direction A, distance L2 is defined as the distance between the boundary between the first surface 45a and the second surface 45b of the engaged portion 45 and the surface of the first wall 61 located inside the enclosure portion 60. Distance L2 is the distance between the first wall 61 and the engaged portion 45. In the axial direction A, distance L2 is longer than distance L1.

[0045] <Initial state> As shown in Figures 2, 4, and 7, when the engagement pin 30 is inserted into the insertion portion 40, the first shaft 71 of the engagement pin 30 is inserted into the first insertion hole 41c. When the first shaft 71 is inserted into the first insertion hole 41c, the second projection 90 passes through the notch hole 41d. After the second projection 90 has passed through the notch hole 41d, the first shaft 71 is inserted into the second insertion hole 42c. As a result, the engagement pin 30 penetrates the arm member 20. The initial state of the engagement pin 30 is defined as the state immediately after the first shaft 71 has been inserted into the second insertion hole 42c, after the second projection 90 has passed through the notch hole 41d. In the initial state, the extended surface 73a of the third shaft 73 of the engagement pin 30 is engaged with the enclosure portion 60 in the axial direction A. In the initial state, the extended surface 72a of the second shaft 72 is engaged with the outer surface 41a of the first partition wall 41 in the axial direction A. In the initial state, the outer circumferential surface of the second shaft 72 is along the curved surface 60a of the enclosure 60. In the initial state, the first wall 61 of the enclosure 60 is positioned in the axial direction A on the opposite side of the engaged portion 45 from the first projection 80.

[0046] As shown in Figure 8, in the initial state, the second projection 90 and the engaged portion 45 are misaligned in the circumferential direction B. In the initial state, the second projection 90 is located on the opposite side from the communication opening 50.

[0047] <Pre-installation state> As shown in Figures 7 and 9, the engagement pin 30 is rotated by a predetermined angle in the circumferential direction B from its initial state to a pre-mounting state. The pre-mounting state is the state of the engagement pin when the second projection 90 is on the opposite side of the engagementd portion 45 from the first projection 80 in the axial direction A. When the engagement pin 30 transitions from the initial state to the pre-mounting state, the first projection 80 passes through the connecting passage 63 of the enclosure 60.

[0048] As shown in Figure 9, in the pre-mounting state, the extended surface 73a of the third shaft 73 is engaged with the enclosure 60 in the axial direction A. In the pre-mounting state, the extended surface 72a of the second shaft 72 is engaged with the outer surface 41a of the first partition wall 41. In the pre-mounting state, the first wall 61 of the enclosure 60 is positioned in the axial direction A on the opposite side of the engaged portion 45 from the first projection 80. In the pre-mounting state, the first projection 80 is not sandwiched between the pair of second walls 62 in the circumferential direction B. The pre-mounting state is the state of the engagement pin 30 when the first projection 80 is not sandwiched between the pair of second walls 62.

[0049] In the pre-mounting state, the extended surface 72a of the second shaft 72 engages with the outer surface 41a of the first partition wall 41, so the engaging pin 30 does not come out of the arm member 20. In the pre-mounting state, the extended surface 72a of the second shaft 72 restricts the second projection 90 from moving in the axial direction A away from the first projection 80. In the pre-mounting state, the engaging pin 30 has an extended surface 72a that acts as an engaging portion that engages with the arm member 20. In the pre-mounting state, the second surface 45b of the engaged portion 45 faces the inclined surface 91 of the second projection 90 in the axial direction A.

[0050] <Installation status> As shown in Figures 9 and 10, the engagement pin 30 is moved axially A in a pre-installation state to bring it into an installed state. The installed state is the state of the engagement pin 30 when the extended surface 73a of the third shaft 73 is separated from the enclosure 60, and the extended surface 72a of the second shaft 72 is separated from the outer surface 41a of the first partition wall 41.

[0051] As the shaft portion 70 moves axially A, the engagement pin 30 transitions from a pre-mounting state to a mounted state. At the same time, the second projection 90 moves axially A over the engaged portion 45, and the first projection 80 is housed in the enclosure portion 60. As the engagement pin 30 transitions from a pre-mounting state to a mounted state, the extended surface 72a of the second shaft 72 separates from the arm member 20. When the second projection 90 overtakes the engaged portion 45, the inclined surface 91 is pressed against the engaged portion 45, and the engaged portion 45 slides on the inclined surface 91. At this time, at least one of the second projection 90 and the engaged portion 45 undergoes elastic deformation.

[0052] When the engaging pin 30 transitions from the pre-mounting state to the mounted state, the second projection 90 moves over the engaged portion 45. At this time, the engaged portion 45 and the inclined surface 91 come into contact. In the mounted state, the engagement between the second projection 90 and the engaged portion 45 prevents the engaging pin 30 from returning to the pre-mounting state.

[0053] When the engagement pin 30 is in the mounted state, the engagement surface 92 of the second projection 90 engages with the first surface 45a of the engaged portion 45 in the axial direction A. When the engagement pin 30 is in the mounted state, the engagement surface 92 of the second projection 90 is positioned adjacent to the engaged portion 45 in the axial direction A. The mounted state is the state of the engagement pin 30 when the second projection 90 is on the side of the engaged portion 45 towards the first projection 80. Note that when the engagement pin 30 is in the mounted state, the engagement surface 92 of the second projection 90 does not have to engage with the first surface 45a of the engaged portion 45. For example, when the engagement pin 30 is in the mounted state, the engagement surface 92 of the second projection 90 may be slightly away from the first surface 45a of the engaged portion 45.

[0054] As shown in Figures 10 and 11, when the engagement pin 30 is in the mounted state, the first projection 80 fits into the groove 60b of the enclosure 60. In the mounted state, the first wall 61 of the enclosure 60 is positioned in the axial direction A on the opposite side of the first projection 80 from the engaged portion 45. When the engagement pin 30 is in the mounted state, the first projection 80 is sandwiched between the first opposing wall 621 and the second opposing wall 622 in the circumferential direction B. The mounted state is the state of the engagement pin 30 when the first projection 80 is sandwiched between the pair of second walls 62. In the mounted state, the engagement of the first projection 80 with the pair of second walls 62 causes the engagement pin 30 to rotate integrally with the arm member 20.

[0055] When the engagement pin 30 is in the installed state, the first inner wall surface 621a and the second inner wall surface 622a are aligned with the side surface 81. The second wall 62 has the first inner wall surface 621a and the second inner wall surface 622a, which are wall surfaces aligned with the side surface 81.

[0056] [Operation of this embodiment] The operation of this embodiment will now be explained. When the engaging pin 30 is in the installed state, even if the engaging pin 30 moves in the direction from the second protrusion 90 toward the first protrusion 80, the first protrusion 80 engages with the first wall 61 of the enclosure 60. Also, even if the engaging pin 30 moves in the direction from the first protrusion 80 toward the second protrusion 90, the second protrusion 90 engages with the engaged portion 45. Therefore, the engaging pin 30 is less likely to come loose from the arm member 20.

[0057] Furthermore, when the lid 20a is opened and closed relative to the opening 101, the arm member 20 integrated with the lid 20a rotates. When the engagement pin 30 is in the attached state, the first projection 80 engages with the pair of second walls 62 of the enclosure 60, causing the arm member 20 and the engagement pin 30 to rotate together. In other words, the engagement pin 30 is less likely to rotate relative to the arm member 20. As a result, the positional relationship between the first projection 80 and the first wall 61 of the enclosure 60, and the positional relationship between the second projection 90 and the engaged portion 45 are suppressed from shifting in the circumferential direction B.

[0058] [Effects of this embodiment] The effects of this embodiment will now be explained. (1) When the engagement pin 30 is in the installed state, the first projection 80 is surrounded by the enclosure 60, and the movement of the second projection 90 toward the opposite side of the first projection 80 in the axial direction A is restricted by the engaged portion 45. Therefore, the assembled state of the engagement pin 30 and the arm member 20 is maintained normally. Consequently, the opening 101 provided in the vehicle body 100 can be opened and closed properly by the cover 20a.

[0059] (2) When the engaging pin 30 is inserted into the insertion portion 40 from the tip of the shaft portion 70, the engaging pin 30 is in a pre-mounting state. In the axial direction A, the second projection 90 is on the opposite side from the first projection 80 to the engaged portion 45, but the extended surface 72a of the second shaft 72 engages with the arm member 20. Therefore, in the pre-mounting state, the engaging pin 30 is less likely to fall out of the insertion portion 40 of the arm member 20.

[0060] (3) The second wall 62 of the enclosure 60 has a first inner wall surface 621a and a second inner wall surface 622a. Even if the engaging pin 30 attempts to rotate relative to the arm member 20, the first projection 80 is less likely to move over the second wall 62 in the circumferential direction B. Therefore, the engaging pin 30 is less likely to rotate relative to the arm member 20. As a result, the positional relationship between the first projection 80 and the first wall 61 of the enclosure 60, and the positional relationship between the second projection 90 and the engaged portion 45 are less likely to shift in the circumferential direction B. Therefore, the assembled state of the engaging pin 30 and the arm member 20 is maintained normally.

[0061] (4) The second projection 90 has an inclined surface 91. Therefore, when the engaging pin 30 transitions from the pre-mounting state to the mounted state, the inclined surface 91 of the second projection 90 makes it easier for the second projection 90 to overcome the engaged portion 45. Also, after the engaging pin 30 is in the mounted state, the edge of the engaging surface 92 engages with the first surface 45a of the engaged portion 45. That is, after the engaging pin 30 is in the mounted state, the engaging surface 92 makes it more difficult for the second projection 90 to overcome the engaged portion 45. Therefore, it is easier to maintain the engaging pin 30 in the mounted state. Thus, it is easier to transition the engaging pin 30 from the pre-mounting state to the mounted state, and the engaging pin 30 becomes less likely to come loose from the arm member 20.

[0062] [Example of changes] This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0063] ○ The second protrusion 90 protruded from the shaft portion 70 in the opposite direction to the direction in which the first protrusion 80 protruded from the shaft portion 70, but this may be changed as follows, for example. As shown in Figures 12 and 13, the second projection 90 may protrude from the shaft portion 70 in the same direction as the first projection 80 protrudes from the shaft portion 70. In this case, the notch hole 41d is modified to be recessed in the direction in which the communication opening 50 opens from the arcuate surface that partitions the first insertion hole 41c. The engaged portion 45 is made to protrude from the inner surface 44a of the fourth partition wall 44. In this modified example, the engaged portion 45 is a plate-shaped projection extending from the inner surface 44a. The inner surface 44a of the fourth partition wall 44 is an example of the inner surface of the insertion portion 40.

[0064] When modified in this way, with the engagement pin 30 in its initial state, the second projection 90 is positioned on the communication opening 50 side. When the engagement pin 30 is in the pre-installation state, the second projection 90 is positioned on the second partition wall 42 side of the engaged portion 45 in the axial direction A. That is, in the pre-installation state, the second projection 90 is positioned on the opposite side of the engaged portion 45 from the first projection 80 in the axial direction A. Then, when the engagement pin 30 is in the installed state, the second projection 90 goes over the engaged portion 45. When the engagement pin 30 is in the installed state, the second projection 90 is positioned on the first projection 80 side of the engaged portion 45 in the axial direction A. When the engagement pin 30 is in the installed state, the engagement surface 92 of the second projection 90 is positioned adjacent to the engaged portion 45. In this case, distance L2 is the distance between the surface of the plate-shaped engaged portion 45 facing the second partition wall 42 and the surface of the first wall 61 located inside the enclosure portion 60.

[0065] ○ The enclosure portion 60 may be placed inside the insertion portion 40. In this case, the following modifications are recommended. As shown in Figures 14 and 15, the enclosure 60 may be provided on the fourth partition wall 44. The first wall 61 of the enclosure 60 protrudes from the inner surface 44a of the fourth partition wall 44 toward the first axis 71. One of the pair of second walls 62 is designated as the third opposing wall 623, and the other of the pair of second walls 62 is designated as the fourth opposing wall 624. The third opposing wall 623 is integrally formed with the first wall 61 and the fourth partition wall 44. The fourth opposing wall 624 is integrally formed with the first wall 61 and the fourth partition wall 44. The third opposing wall 623 and the fourth opposing wall 624 face each other.

[0066] When the enclosure portion 60 is positioned inside the insertion portion 40, the first protrusion portion 80 is modified to protrude from the first shaft 71. Also, similar to the above modification example, when the engaged portion 45 is modified to be provided on the fourth partition wall 44, the first protrusion portion 80 and the second protrusion portion 90 should protrude from the first shaft 71 in the same direction.

[0067] In this modified example, when installed, the first wall 61 is positioned in the axial direction A on the opposite side of the engaged portion 45 from the first projection 80. When the engaging pin 30 is installed, the first projection 80 is sandwiched between the third opposing wall 623 and the fourth opposing wall 624 in the circumferential direction B. Therefore, when the engaging pin 30 is installed, the first projection 80 is sandwiched between the pair of second walls 62. When the engaging pin 30 is installed, the second projection 90 is positioned on the first projection 80 side of the engaged portion 45 in the axial direction A. When the engaging pin 30 is installed, the engaging surface 92 of the second projection 90 is positioned adjacent to the engaged portion 45.

[0068] ○ The arrangement of the first protrusion 80 and the second protrusion 90 in the circumferential direction B may be changed as appropriate. In this case, the arrangement of the enclosure portion 60 and the engaged portion 45 in the circumferential direction B should be changed to match the arrangement of the first protrusion 80 and the second protrusion 90.

[0069] ○ The first partition wall 41, the second partition wall 42, the third partition wall 43, and the fourth partition wall 44 may have their shapes modified as appropriate, as long as a space S and an engaged portion 45 can be formed inside the insertion portion 40.

[0070] ○ The shape of the first protrusion 80 may be changed as appropriate. The first protrusion 80 should be able to engage with the second wall 62 when the engaging pin 30 rotates in the circumferential direction B while mounted. Also, the first protrusion 80 should be able to engage with the first wall 61 when the engaging pin 30 moves from the second protrusion 90 toward the first protrusion 80 while mounted.

[0071] ○ The second projection 90 had an inclined surface 91 and an engaging surface 92, but is not limited to this. The shape of the second projection 90 may be changed as appropriate. The second projection 90 should be able to engage with the engaged portion 45 when the engaging pin 30 is attached and the engaging pin 30 moves in the direction from the first projection 80 toward the second projection 90.

[0072] ○ In the second wall 62, the first inner wall surface 621a and the second inner wall surface 622a do not have to be parallel. The shape of the second wall 62 may be changed as appropriate, as long as the first projection 80 can be engaged when the engagement pin 30 is rotated in the circumferential direction B while installed.

[0073] ○ The engagement pin 30 had an extended surface 72a as an engaging portion that engages with the arm member 20 in the pre-mounting state, but is not limited to this. For example, the shaft portion 70 may be formed only of the first shaft 71, and an extended portion protruding radially C from the first shaft 71 may be newly added. When the engagement pin 30 is in the pre-mounting state, the extended portion may be engaged with, for example, the outer surface 41a of the first partition wall 41. In other words, the extended portion may be used as the engaging portion. Note that the engaging portion that engages with the arm member 20 may be omitted from the engagement pin 30 in the pre-mounting state.

[0074] ○ The lid 20a of the arm member 20 may be a separate lid from the arm member 20. The lid only needs to be integrated with the arm member 20. ○ The arm member 20 and the engaging pin 30 may be made of a metal material, for example. However, the shape of the second protrusion 90 and the shape of the engaged portion 45 should be appropriately modified so that the second protrusion 90 can overcome the engaged portion 45 when the engaging pin 30 transitions from the pre-mounting state to the mounted state.

[0075] [Note] This section describes the technical concepts that can be understood from the embodiments and modified examples. [1] A mounting structure for a vehicle comprising: a lid for opening and closing an opening provided in the vehicle body; an arm member integrated with the lid and rotating in conjunction with the opening and closing of the opening by the lid; and an engagement pin which is an axial member that serves as the rotation center of the arm member, penetrates the arm member and is rotatable relative to the vehicle body, wherein the engagement pin has a shaft portion extending along an axis, a first projection protruding from the shaft portion in a direction intersecting the axis, and a second projection protruding from the shaft portion in a direction intersecting the axis and provided at a position away from the first projection in the axial direction along the axis, wherein the arm member has an insertion portion that forms a space through which the shaft portion is inserted, an engaged portion protruding from the inner surface of the insertion portion toward the shaft portion, and an enclosure portion having a first wall positioned on the opposite side of the engaged portion from the first projection in the axial direction, and a pair of second walls extending in the axial direction and facing each other, wherein in the axial direction, the first wall and the The distance between the engaged portion and the engagement pin is longer than the distance between the first and second protrusions, the first protrusion is sandwiched between the pair of second walls, and the state of the engagement pin when the second protrusion is on the side of the first protrusion relative to the engaged portion in the axial direction is defined as the mounted state, and the state of the engagement pin when the first protrusion is not sandwiched between the pair of second walls, and the second protrusion is on the opposite side of the first protrusion relative to the engaged portion in the axial direction is defined as the pre-mounting state. When the shaft moves in the axial direction, the state of the engagement pin transitions from the pre-mounting state to the mounted state, the second protrusion moves in the axial direction while crossing over the engaged portion, and the first protrusion is housed in the enclosure. In the mounted state, the engagement of the first protrusion with the pair of second walls causes the engagement pin to rotate integrally with the arm member, and the engagement of the second protrusion with the engaged portion prevents the engagement pin from returning to the pre-mounting state.

[0076] [2] The mounting structure for a lid for a vehicle according to [1], wherein the engaging pin has an engaging portion that engages with the arm member in the pre-mounting state to restrict the second projection from pointing in the axial direction away from the first projection.

[0077] [3] The first projection has sides located on both sides in the circumferential direction of the shaft portion of the first projection, and the pair of second walls have wall surfaces along the sides, the mounting structure for a cover for a vehicle according to [1] or [2].

[0078] [4] The mounting structure for a cover for a vehicle according to any one of [1] to [3], wherein the second projection is an inclined surface provided on the portion of the first projection in the axial direction, the inclined surface extending so as it approaches the axis of the shaft portion in the axial direction toward the first projection, and an engaging surface provided on the portion of the shaft portion opposite to the first projection in the axial direction, the engaging surface extending in a direction perpendicular to the axis of the shaft portion. [Explanation of Symbols]

[0079] 10... Mounting structure for the cover on the vehicle, 20... Arm member, 20a... Cover, 30... Engaging pin, 40... Insertion part, 45... Engaged part, 60... Enclosure part, 61... First wall, 62... Pair of second walls, 70... Shaft part, 72a... Extended surface as an engaging part, 80... First projection, 81... Side surface, 90... Second projection, 91... Inclined surface, 92... Engaging surface, 100... Vehicle body, 101... Opening, 621a... First inner wall surface as a wall surface of a pair of second walls, 622a... Second inner wall surface as a wall surface of a pair of second walls, m... Axis of the shaft part, A... Axial direction, B... Circumferential direction, L1... Distance between the first projection and the second projection, L2... Distance between the first wall and the engaged part, S... Space.

Claims

1. A cover that opens and closes an opening in the vehicle body, An arm member integrated with the lid, which rotates in conjunction with the opening and closing of the lid, A mounting structure for a vehicle comprising an axial member that serves as the rotation center of the arm member, an engaging pin that penetrates the arm member and is rotatable relative to the vehicle body, The aforementioned engagement pin is A shaft portion extending along the axis, A first projection extending from the shaft in a direction intersecting the axis, It has a second projection that protrudes from the shaft portion in a direction intersecting the axis and is located at a position away from the first projection in the axial direction along the axis, The aforementioned arm member is An insertion portion that forms a space through which the shaft portion is inserted, A engaged portion that protrudes from the inner surface of the insertion portion toward the shaft portion, It has a first wall positioned in the axial direction opposite to the engaged portion relative to the first projection, and an enclosure having a pair of second walls that extend in the axial direction and face each other. In the axial direction, the distance between the first wall and the engaged portion is longer than the distance between the first protrusion and the second protrusion. When the first protrusion is sandwiched between the pair of second walls and the second protrusion is on the side of the first protrusion relative to the engaged portion in the axial direction, the state of the engagement pin is defined as the mounted state, and when the first protrusion is not sandwiched between the pair of second walls and the second protrusion is on the opposite side of the first protrusion relative to the engaged portion in the axial direction, the state of the engagement pin is defined as the pre-mounting state. As the shaft moves in the axial direction, the state of the engaging pin transitions from the pre-mounting state to the mounted state, the second projection moves in the axial direction while overcoming the engaged portion, and the first projection is housed in the enclosure. A mounting structure for a vehicle cover, characterized in that, in the mounting state, the engagement of the first protrusion with the pair of second walls causes the engagement pin to rotate integrally with the arm member, and the engagement of the second protrusion with the engaged portion prevents the engagement pin from returning to the pre-mounting state.

2. The mounting structure for a vehicle lid according to claim 1, wherein the engaging pin has an engaging portion that engages with the arm member to restrict the second projection from pointing in the axial direction away from the first projection in the pre-mounting state.

3. The first projection has side surfaces located on both sides in the circumferential direction of the shaft portion at the first projection, The vehicle mounting structure according to claim 1 or claim 2, wherein the pair of second walls have wall surfaces along the side surfaces.

4. The second protrusion is, An inclined surface provided on the portion on the first protruding portion side in the axial direction, the inclined surface extending in the axial direction such that it approaches the axis of the shaft portion as it moves toward the first protruding portion, A mounting structure for a cover for a vehicle according to claim 1 or 2, comprising: an engaging surface provided on the portion opposite to the first protrusion in the axial direction, the engaging surface extending in a direction perpendicular to the axis of the shaft portion.

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