Lid opening and closing device

Abstract

To prevent fastening between a base material and a lid by freezing at a lid close position.SOLUTION: A lid opening / closing device includes: a base material provided with an opening; a lid which is opened / closed at a close position where the opening is closed and an open position where the opening is opened; and a positioning part for positioning at least a vertical position of the lid with respect to the base material at a lid close position. The positioning part has an engagement recess which is provided in a recessed shape on one of the base material and the lid, and an engagement projection which is provided in a projecting shape on the other of the base material and the lid, and is engaged with the engagement recess at the lid close position in at least the vertical direction. One of the engagement recess and the engagement projection has a rib extending in a vertical direction at the lid close position. The rib is engaged with the other of the engagement recess and the engagement projection at the lid close position, at its tip.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a lid opening / closing device capable of opening and closing a lid that opens and closes an opening of a base material attached to, for example, a vehicle body.

Background Art

[0002] Conventionally, a lid opening / closing device mounted on a vehicle and including a lid that opens and closes an opening of a base material has been known (for example, Patent Document 1). The base material is, for example, a base member attached to a vehicle body and exposing a charging port or a fueling port of the vehicle. The lid is a lid member that opens and closes between a closed position where it closes the opening of the base material and an open position where it opens the opening. In the lid opening / closing device described in Patent Document 1 above, an engaging concave portion is provided on the base material, and an engaging convex portion is provided on the lid. The engaging concave portion of the base material and the engaging convex portion of the lid engage with each other at the closed position of the lid to position the lid with respect to the base material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a structure in which the engaging concave portion and the engaging convex portion engage with each other at the lid closed position as described above, if the engaging concave portion and the engaging convex portion abut against each other with their surfaces facing each other in the vertical direction during engagement, the area where the engaging concave portion and the engaging convex portion contact or the area where the surfaces are close to each other in the engaged state becomes large. For this reason, especially in winter, even if the amount of water accumulated between the engaging concave portion and the engaging convex portion is not so much, the region where the water accumulated between the engaging concave portion and the engaging convex portion freezes in the engaged state extends over a wide range, and the base material and the lid are likely to be fixed due to freezing at the lid closed position.

[0005] The present invention has been made in view of these points, and aims to provide a lid opening and closing device that can prevent the substrate and the lid from sticking together due to freezing when the lid is in the closed position. [Means for solving the problem]

[0006] One aspect of the present invention is a lid opening and closing device comprising: a base material having an opening; a lid that opens and closes between a closed position that closes the opening and an open position that opens the opening; and a positioning unit that positions the lid at least vertically relative to the base material in the closed position of the lid, wherein the positioning unit has an engaging recess provided concavely on one of the base material and the lid, and an engaging projection provided convexly on the other of the base material and the lid, which engages with the engaging recess at least vertically in the closed position of the lid, and one of the engaging recess and the engaging projection has a rib that extends vertically in the closed position of the lid, the tip of which engages with the other of the engaging recess and the engaging projection in the closed position of the lid.

[0007] This configuration prevents the substrate and lid from freezing and sticking together when the lid is closed. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front perspective view of a lid opening / closing device mounted on a vehicle according to one embodiment of the present invention, in the lid closed position. [Figure 2] This is a front view of a lid opening / closing device of one embodiment in the lid open position. [Figure 3] This is a perspective view of the lid opening / closing device of one embodiment in the lid open position. [Figure 4] This is a front view of the base material of a lid opening / closing device according to one embodiment. [Figure 5] This is a front view of the lid of a lid opening and closing device according to one embodiment. [Figure 6] This is a front view of the base material of a lid opening / closing device according to one embodiment. [Figure 7] This is a cross-sectional view showing the positional relationship between the base material and the lid in the lid closed position of a lid opening / closing device according to one embodiment. [Figure 8] This is a cross-sectional view showing the positional relationship between the base material and the lid in the lid closed position of a lid opening / closing device according to another embodiment of the present invention. [Modes for carrying out the invention]

[0009] Specific embodiments of the lid opening and closing device according to the present invention will be described below with reference to Figures 1-8.

[0010] One embodiment of the lid opening / closing device 1 is a device that opens and closes a lid relative to a substrate.

[0011] The lid opening / closing device 1 is installed in vehicles such as gasoline cars, diesel cars, electric cars, and hybrid cars, and is mounted in a mounting hole 2a provided in the vehicle body surface 2, such as on the side or front of the vehicle body. A supply port 3 for supplying energy to the vehicle (specifically, a charging port or fuel port; see Figure 2) is located at the back of the mounting hole 2a. In this embodiment, the direction is indicated based on the view of the lid opening / closing device 1 from the outside of the vehicle, with the direction connecting the outside (front side) and the inside (back side) of the vehicle being defined as the front-to-back direction X, the horizontal direction along the vehicle body surface 2 being defined as the left-to-right direction Y, and the vertical direction along the vehicle body surface 2 being defined as the up-and-down direction Z.

[0012] As shown in Figures 1 and 2, the lid opening / closing device 1 comprises a base material 10, a lid 20, and an opening / closing mechanism 30. The lid opening / closing device 1 operates by transmitting power to the lid 20 through the driving of the opening / closing mechanism 30, thereby opening and closing the lid 20 relative to the base material 10.

[0013] The base material 10 is a container-shaped or box-shaped box member that houses the supply port 3. The base material 10 is attached and fixed to the vehicle body surface 2 so as to fit into the mounting hole 2a. The base material 10 has a bottom wall portion 11, side wall portions 12, a storage space 13, and an opening 14. The base material 10 is a cylindrical bottomed member in which the bottom wall portion 11 is formed at the rear, the side wall portions 12 surround the periphery of the bottom wall portion 11 to partition the storage space 13, and the opening 14 is formed at the front. The base material 10 is an injection-molded body made of resin or the like.

[0014] The supply port 3 is located at the other end of a pipe or cable that has one end connected to a fuel tank or battery. The fuel tank and battery are located behind the through-hole 11a provided in the bottom wall 11. The supply port 3 is located in front of the through-hole 11a and is housed in the storage space 13. When the lid 20 is closed, the supply port 3 is hidden behind the lid 20, while when the lid 20 is open, it is exposed to the outside of the vehicle through the opening 14, allowing for fuel supply and charging.

[0015] The base material 10 has a frame portion 15. The frame portion 15 is formed in an annular shape along the periphery of the opening 14 and is formed in a flange shape so as to extend outward from the periphery of the opening 14. The base material 10 is positioned on the vehicle body surface 2 by the back surface of the frame portion 15 contacting the flange surface of the periphery of the mounting hole 2a on the vehicle body surface 2.

[0016] The lid 20 is a cover member that opens and closes the opening 14 of the base material 10. The lid 20 is formed in a plate shape. The lid 20 is sized to match the opening 14 and the frame portion 15 around the periphery of the opening 14. The lid 20 closes the opening 14 so that it is flush with the vehicle body surface 2 when the lid 20 is in the closed position. The surface of the lid 20 may be curved to match the vehicle body surface 2. The lid 20 is, for example, an injection-molded body made of resin.

[0017] The lid 20 is capable of performing an opening and closing operation that moves between a closed position and an open position. Here, the closed position means the position where the lid 20 closes the opening 14. Also, the open position means a predetermined position where the lid 20 opens the opening 14. The lid 20 is supported so as to be positionally movable with respect to the base material 10. The lid 20 is capable of performing an opening and closing operation by the power from the opening and closing mechanism 30.

[0018] The opening and closing mechanism 30 is a mechanism that causes the lid 20 to perform an opening and closing operation between a closed position and an open position with respect to the base material 10. The opening and closing mechanism 30 is interposed between the base material 10 and the lid 20. The opening and closing mechanism 30 is configured to include arms, links, etc. that connect the base material 10 and the lid 20.

[0019] Here, the opening and closing mechanism 30 may be, for example, a mechanism that uses the power generated by an actuator such as a motor to open and close the lid 20, or a mechanism that uses the external force associated with the manual operation of an operator as power to open and close the lid 20, or further, a mechanism that selectively uses the power of those actuators and the external force to open and close the lid 20.

[0020] Also, the opening and closing mechanism 30 may be a mechanism that makes the power source for opening the lid 20 and the power source for closing the lid 20 different types from each other. For example, the power source for opening the lid 20 may be an actuator, and the power source for closing the lid 20 may be the manual operation of an operator. Also, the opening and closing mechanism 30 may be a mechanism that normally uses an actuator to open the lid 20, but manually operates the operator to open the lid 20 in an emergency such as a failure of the actuator.

[0021] Furthermore, the opening / closing mechanism 30 may be a sliding mechanism that moves the lid 20 while keeping it parallel to the opening 14 during the opening and closing operation of the lid 20, or it may be a gooseneck mechanism that rotates the lid 20 around an axis extending substantially parallel to the opening 14 during the opening and closing operation of the lid 20. Also, the direction in which the opening / closing mechanism 30 opens and closes the lid 20 relative to the base material 10 may be the vertical direction Z or the horizontal direction Y. In Figures 2, 3, and 5, an opening / closing mechanism 30 of the sliding type with opening and closing operation in the horizontal direction Y is shown.

[0022] Furthermore, the direction in which the lid 20 moves relative to the base material 10 near the closed position by the opening / closing mechanism 30 is preferably the front-to-back direction X, including in the case of the sliding mechanism described above, in order to ensure airtightness of the storage space 13 when the lid 20 is in the closed position.

[0023] The lid opening / closing device 1 includes a positioning section 40. The positioning section 40 is a part that positions the lid 20 at least vertically relative to the base material 10 when the lid 20 is in the closed position. The positioning section 40 is provided on the base material 10 and the lid 20. The positioning section 40 is positioned on the base material 10 and the lid 20 so that the lid 20 fits into the storage space 13 when the lid 20 is in the closed position.

[0024] The positioning portion 40 has an engaging recess 41 and an engaging projection 42. The engaging recess 41 and the engaging projection 42 engage with each other at least in the vertical direction Z when the lid 20 is in the closed position. The engaging recess 41 is provided in a concave shape in the base material 10. The engaging projection 42 is provided in a convex shape in the lid 20. One or more pairs of engaging recesses 41 and engaging projections 42 are provided in the base material 10 and the lid 20.

[0025] In this embodiment, it is assumed that the engaging recess 41 and engaging projection 42 are provided as a pair. It is preferable that this pair of engaging recess 41 and engaging projection 42 be positioned on the side furthest from the side where the opening / closing mechanism 30 is located (the left side in Figures 2 and 3) (the right side with the supply port 3 in between in Figures 2 and 3) in order to effectively position the lid 20 relative to the base material 10. Furthermore, as shown in Figure 2, it is preferable that this pair be positioned above the supply port 3 so that when the lid 20 is in the open position, the side wall portion 12, which acts as the upper wall of the base material 10, acts as a canopy, making it difficult to see the engaging recess 41 when a person outside the vehicle looks down at the supply port 3 inside the storage space 13 of the base material 10.

[0026] The engaging recess 41 is provided in the bottom wall portion 11 of the base material 10 such that a hole or groove opens at least on the front side. The engaging recess 41 has a recessed groove portion 41a and a peripheral wall portion 41b. The recessed groove portion 41a is a hole or groove recessed from the surface of the bottom wall portion 11 toward the back side. The peripheral wall portion 41b is a wall portion provided on the periphery of the recessed groove portion 41a in order to partition the recessed groove portion 41a. The peripheral wall portion 41b has an upper wall surface 41bu, a lower wall surface 41bd, and a side wall surface 41bs.

[0027] Furthermore, the peripheral wall portion 41b does not need to surround all four sides of the groove portion 41a; it is sufficient that it is provided at least above and below the groove portion 41a, and as shown in Figures 2 and 4, the side wall surface 41bs is provided only on the right side, and the side wall surface 41bs does not need to be provided on the left side.

[0028] The upper wall surface 41bu and the lower wall surface 41bd are opposing surfaces in the vertical direction Z. The upper wall surface 41bu and the lower wall surface 41bd are each formed in a planar shape. The upper wall surface 41bu extends horizontally (specifically, including approximately horizontally). The lower wall surface 41bd is inclined with respect to the horizontal. Specifically, as shown in Figure 4, the lower wall surface 41bd is inclined downward from the back side to the front side of the engagement recess 41. The inclination angle of the lower wall surface 41bd can be set to the angle at which a water droplet attached to the lower wall surface 41bd flows from the top to the bottom side of the lower wall surface 41bd and falls from the opening at the lower end of the lower wall surface 41bd, for example, between 5° and 30°.

[0029] The side wall surface 41bs is formed in a planar shape. The side wall surface 41bs is oriented in the left-right direction Y (specifically, to the left in the left-right direction Y when the side wall surface 41bs is the right wall surface), extends along a plane that includes the up-down direction Z and the front-back direction X, and connects the upper wall surface 41bu and the lower wall surface 41bd. The side wall surface 41bs is provided only on the right side. The groove portion 41a of the engagement recess 41 opens on the front side and is integrated with the storage space 13, and also opens on the left side and is integrated with the storage space 13 on the supply port 3 side.

[0030] The engaging recess 41 has a rib 43. The rib 43 is the portion that engages with the engaging projection 42 when the lid 20 is in the closed position. The rib 43 extends in the vertical direction Z when the lid 20 is in the closed position. The rib 43 can engage with the engaging projection 42 at its tip (specifically, its upper end). The rib 43 only needs to be formed with a vertical component in the vertical direction Z that is perpendicular to the horizontal direction, and may be slightly inclined with respect to the vertical direction Z. The inclination angle of the rib 43 with respect to the vertical direction Z may be, for example, 5° to 30°.

[0031] The rib 43 is formed in a plate shape so as to extend vertically in the Z direction when the lid 20 is in the closed position, and from the back side of the engaging recess 41 towards the front side, i.e., in the front-back direction X. The rib 43 makes line contact with the engaging projection 42 when it engages with the engaging projection 42 at its tip. The rib 43 protrudes upward from the lower wall surface 41bd when the lid 20 is in the closed position. The rib 43 is integrally formed with the lower wall surface 41bd. The tip of the rib 43 is located above the lower wall surface 41bd (specifically, the upper end on its rear side). The rib 43 only needs to be formed so that its height from the lower wall surface 41bd is at least 1 mm, for example, the height on the front side is in the range of 6 mm to 8 mm and the height on the rear side is in the range of 1 mm to 2 mm.

[0032] Furthermore, while a single rib 43 may be provided, it is preferable to provide multiple ribs 43 to ensure stable engagement between the engaging recess 41 and the engaging projection 42. In this embodiment, the engaging recess 41 is assumed to have three ribs 43. Figures 2, 4, 6, and 7 show an engaging recess 41 with three ribs 43. The multiple ribs 43 should be arranged such that the distance between them in the left-right direction Y is at least 2 mm, for example, within the range of 4 mm to 5 mm.

[0033] The engaging projection 42 protrudes inward from the back surface of the lid 20 when the lid 20 is in the closed position. The engaging projection 42 is sized to correspond to the groove 41a of the engaging recess 41. The engaging projection 42 extends in a columnar or cylindrical shape along the front-to-back direction X. The engaging projection 42 is formed in a square cross-section. When the lid 20 is in the closed position, the engaging projection 42 fits into the groove 41a of the engaging recess 41, and the outer surface (especially the lower surface) of the engaging projection 42 engages with the tip of the rib 43 of the engaging recess 41.

[0034] Furthermore, the direction in which the engaging projection 42 extends from the back surface of the lid 20 only needs to be aligned with the direction of movement of the lid 20 relative to the base material 10 near the closed position during the opening and closing operation of the lid 20, and should include a component in the front-to-back direction X. In addition, the direction in which the engaging projection 42 extends may be inclined with respect to the direction of movement of the lid 20 relative to the base material 10. The inclination angle of the engaging projection 42 with respect to the direction of movement may be, for example, 5° to 30°.

[0035] Furthermore, it is preferable that the positioning portion 40 is configured such that when the tip of the rib 43 of the engagement recess 41 of the base material 10 and the outer surface of the engagement projection 42 of the lid 20 engage with each other, the outer surface of the engagement projection 42 does not contact the peripheral wall portion 41b of the engagement recess 41 (especially the upper wall surface 41bu, the lower wall surface 41bd, and the side wall surface 41bs), in order to prevent the base material 10 and the lid 20 from sticking together due to freezing. Moreover, it is preferable that, at this time of engagement, the tip of the engagement projection 42 of the lid 20 does not contact the inner wall of the engagement recess 41 of the base material 10, in order to prevent the base material 10 and the lid 20 from sticking together due to freezing.

[0036] Next, we will explain the operation of the lid opening / closing device 1. In the lid opening / closing device 1, when the lid 20 is in the closed position, the engaging projection 42 of the lid 20 fits into the groove 41a of the engaging recess 41 of the base material 10 and engages with the rib 43 of the engaging recess 41, so that the lid 20 is positioned at least in the vertical direction Z relative to the base material 10.

[0037] As described above, when the lid 20 is in the closed position, a predetermined opening operation is performed by the operator, and the opening / closing mechanism 30 generates power to open the lid 20. When this power is generated, the lid 20 opens from the closed position toward the open position relative to the base material 10. Immediately after the start of this opening operation of the lid 20, the engaging projection 42 of the lid 20 is pulled out from the groove 41a of the engaging recess 41 of the base material 10, so the engagement between the engaging projection 42 and the engaging recess 41 is released.

[0038] Furthermore, when a predetermined closing operation is performed after the lid 20 has reached the open position, the opening / closing mechanism 30 generates power to close the lid 20. When this power is generated, the lid 20 moves from the open position toward the closed position relative to the base material 10. Immediately before the end of this closing operation of the lid 20, the engaging projection 42 of the lid 20 is inserted into and fitted into the groove 41a of the engaging recess 41 of the base material 10 and engages with the rib 43 of the engaging recess 41. When this engagement occurs, the lid 20 is positioned at least in the vertical direction Z relative to the base material 10.

[0039] Therefore, in the lid opening / closing device 1, when the lid 20 is opened and closed relative to the base material 10 by the opening / closing mechanism 30, the engaging recess 41 of the base material 10 and the engaging projection 42 of the lid 20 can be engaged or disengaged.

[0040] In the lid opening and closing device 1, the engagement between the engagement recess 41 of the base material 10 and the engagement projection 42 of the lid 20 is achieved by the engagement between the tip of the rib 43 of the engagement recess 41 and the outer surface of the engagement projection 42. This engagement structure makes it possible to reduce the area in contact between the engagement recess 41 and the engagement projection 42, or the area where their surfaces are close together, when they are engaged. As a result, it is difficult for water that accumulates between the engagement recess 41 and the engagement projection 42 to freeze, or even if the water does freeze, the frozen area can be limited to a narrow range.

[0041] Therefore, the lid opening / closing device 1 can prevent the base material 10 and the lid 20 from becoming stuck together due to freezing when the lid 20 is in the closed position, and even if such sticking occurs, the lid 20 can be opened relative to the base material 10 with little force.

[0042] Furthermore, in the lid opening and closing device 1, the rib 43 extends upward from the lower wall surface 41bd, but the lower wall surface 41bd of the engaging recess 41 is inclined with respect to the horizontal when the lid 20 is in the closed position. With this inclined structure, even if water enters the lower wall surface 41bd, the water flows from the upper side to the lower side of the lower wall surface 41bd and is discharged to the outside from its lower end (front side). As a result, water is less likely to accumulate on the lower wall surface 41bd, and the expansion of the frozen area when water between the engaging recess 41 and the engaging projection 42 freezes due to the accumulation of a large amount of water on the lower wall surface 41bd can be suppressed. Consequently, the performance in preventing sticking due to freezing between the base material 10 and the lid 20 in the lid closed position can be improved.

[0043] As described above, the water discharged to the outside from the lower end of the lower wall surface 41bd falls towards the bottom of the containment space 13. It is undesirable for this fallen water to accumulate in the containment space 13 in order to prevent water from entering the supply port 3. Therefore, it is preferable to provide a water drainage hole 16 (see Figure 3) at the bottom of the containment space 13 in the base material 10 (especially at the very bottom) so that water can be discharged to the outside from the containment space 13, and it is also preferable to provide a water passage at the bottom of the containment space 13 so that water can easily collect there.

[0044] In the above embodiment, the engaging recess 41 of the positioning portion 40 is provided in a concave shape in the base material 10, and the engaging projection 42 is provided in a convex shape in the lid 20. However, the present invention is not limited to this, and may also be applied to a configuration in which the engaging recess 41 of the positioning portion 40 is provided in a concave shape in the lid 20, and the engaging projection 42 is provided in a convex shape in the base material 10.

[0045] Furthermore, in the above embodiment, the engaging recess 41 has a rib 43 that extends in the vertical direction Z when the lid 20 is in the closed position. However, the present invention is not limited thereto, and may also be applied to a configuration in which the engaging projection 42 has a rib 43 that extends in the vertical direction Z when the lid 20 is in the closed position, as shown in Figure 8.

[0046] Furthermore, in the above embodiment, the rib 43 extends upward from the lower wall surface 41bd of the engaging recess 41, and the lower surface of the engaging projection 42 engages with the tip (specifically, the upper end) of the rib 43. That is, the engagement of the rib 43 between the engaging recess 41 and the engaging projection 42 occurs only on the lower side of the engaging projection 42. However, the present invention is not limited thereto, and may be applied to configurations in which the engagement of the rib 43 between the engaging recess 41 and the engaging projection 42 occurs only on the upper side or the right side of the engaging projection 42, or in configurations in which it occurs on two or more of the lower, upper, and right sides. This modified form may also be applied to a configuration in which the rib 43 extends downward from the lower surface of the engaging projection 42, and the lower wall surface 41bd of the engaging recess 41 engages with the tip (specifically, the lower end) of the rib 43.

[0047] Furthermore, in the above embodiment, the rib 43 extends upward from the lower wall surface 41bd of the engagement recess 41 which forms the positioning portion 40 of the base material 10, and is integrally formed with the lower wall surface 41bd. However, the present invention is not limited thereto, and the rib 43 may extend forward from the bottom wall portion 11 or back wall portion located further back than the engagement recess 41 of the base material 10, and may be integrally formed with the bottom wall portion 11 or back wall portion. In this structure, a gap may be formed between the lower end of the rib 43 and the lower wall surface 41bd.

[0048] Furthermore, in the above embodiment, as shown in Figures 3, 5, and 7, the engaging projection 42 is formed in a square cross-section, and the upper surface of the engaging projection 42 is flat. However, the present invention is not limited thereto, and the upper surface of the engaging projection 42 may be raised upward in a convex or mountain-like shape so that its height position changes in the left-right direction Y. According to this modified form, even if water enters the upper surface of the engaging projection 42, the water is less likely to accumulate on the upper surface of the engaging projection 42, thereby preventing the upper surface of the engaging projection 42 and the engaging recess 41 from freezing and sticking together.

[0049] Furthermore, in the above embodiment, the lower wall surface 41bd of the engaging recess 41 is inclined downward from the back to the front of the engaging recess 41 when the lid 20 is in the closed position, and the rib 43 is formed in a plate shape so as to extend vertically while extending from the back to the front of the engaging recess 41 when the lid 20 is in the closed position. However, the present invention is not limited thereto, and may also be applied to a configuration in which the lower wall surface 41bd of the engaging recess 41 is inclined in the left-right direction Y of the engaging recess 41 when the lid 20 is in the closed position, and the rib 43 is formed in a plate shape so as to extend vertically while extending in the left-right direction Y of the engaging recess 41 when the lid 20 is in the closed position.

[0050] Even in this modified inclined structure, if water enters the lower wall surface 41bd, the water flows from the top to the bottom of the lower wall surface 41bd and is discharged to the outside from its lower end (right or left end). Therefore, water is less likely to accumulate on the lower wall surface 41bd, and the expansion of the frozen area when water between the engaging recess 41 and the engaging projection 42 freezes due to the accumulation of a large amount of water on the lower wall surface 41bd can be suppressed. Consequently, the performance in preventing sticking between the base material 10 and the lid 20 due to freezing in the lid closed position can be improved.

[0051] Furthermore, the present invention is not limited to the embodiments and modifications described above, and various modifications can be made without departing from the spirit of the invention. In addition, this specification not only discloses the technical concept indicated by the reference relationships described in each claim at the time of filing, but also discloses a technical concept that appropriately combines the matters described in each claim. [Explanation of symbols]

[0052] 1: Lid opening / closing device, 10: Base material, 13: Storage space, 14: Opening, 20: Lid, 30: Opening / closing mechanism, 40: Positioning part, 41: Engaging recess, 41a: Groove part, 41b: Peripheral wall part, 41bu: Upper wall surface, 41bd: Lower wall surface, 41bs: Side wall surface, 42: Engaging protrusion, 43: Rib.

Claims

1. A base material having an opening, which houses a supply port provided in the vehicle on the back side of the opening, A lid that opens and closes between a closed position that closes the opening and an open position that opens the opening, A positioning unit that positions the lid at least vertically relative to the substrate in the closed position of the lid, Equipped with, The positioning part is, When the lid is in the closed position, it is located in a region inside the periphery of the opening, away from the supply port. A recessed engagement recess is provided in one of the base material and the lid, An engaging projection is provided convexly on the other of the base material and the lid, and engages with the engaging recess at least vertically when the lid is in the closed position, It has, One of the engagement recess and the engagement projection has a rib that extends vertically in the closed position of the lid. A lid opening and closing device wherein the rib always engages with the other of the engaging recess and the engaging protrusion at the tip of the rib when the lid is in the closed position.

2. The lid opening and closing device according to claim 1, wherein the engaging recess has a lower wall surface that is inclined with respect to the horizontal when the lid is in the closed position.

3. The lower wall surface is inclined downward from the back to the front of the engagement recess when the lid is in the closed position. The lid opening and closing device according to claim 2, wherein the rib is formed in a plate shape so as to extend vertically in the closed position of the lid and from the back side to the front side of the engagement recess.

4. The lower wall surface is inclined in the left-right direction of the engagement recess when the lid is in the closed position. The lid opening and closing device according to claim 2, wherein the rib is formed in a plate shape so as to extend vertically in the closed position of the lid and horizontally in the engaging recess.

5. The lid opening and closing device according to claim 3 or 4, wherein the rib is provided in the engaging recess and extends upward from the lower wall surface when the lid is in the closed position.

6. The lid opening and closing device according to claim 3 or 4, wherein the rib is provided on the engaging projection and extends downward from the lower surface of the engaging projection when the lid is in the closed position.

Images