Lid opening and closing device

Abstract

To provide a lid opening / closing device that is able to prevent an opening / closing operation from becoming difficult, while improving liquid tightness.SOLUTION: A lid opening / closing device includes a push rod 3 and a housing 20 movably supporting the push rod 3, and the housing 20 is provided with a vent portion 6. The vent portion 6 has a concentration chamber 61 and a skirt portion 63 with an open end 65. The concentration chamber 61 communicates with the housing 20, the skirt portion 63 communicates with the concentration chamber 61 through an opening 62, and a cross section of the open end 65 is larger than a cross section of the opening 62.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a lid opening and closing device used for a vehicle lid. [Background technology]

[0002] There are known opening and closing devices used for the lids of vehicle charging ports and fuel filler ports. The opening and closing devices are equipped with a push rod (lifter) that moves forward and backward, and are configured so that each time the push rod is pressed from the outside via the lid, it alternates between a pushed-in position in a closed state and a protruding position in an open state (Patent Documents 1, 2, and 3). Some opening and closing devices are also equipped with a lid lock mechanism that has a locking portion (Patent Documents 1 and 2). In the case of an opening and closing device equipped with a locking mechanism, a locking portion is provided at the tip of the push rod, and when the lid is in the pushed-in position, the lid is locked by the locking portion of the push rod, and when the lid is in the extended position, the lid is released from the locking portion of the push rod and is in the open state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-42527 [Patent Document 2] Japanese Patent Publication No. 2022-155758 [Patent Document 3] Japanese Patent Application Laid-Open No. 2007-290573 Summary of the Invention [Problem to be solved by the invention]

[0004] The main body, which partially houses the push rod of the opening / closing device, is located inside the panel (inside the vehicle), thereby preventing rainwater and other water from entering the opening / closing device and preventing the water from affecting the internal mechanisms. However, it may be difficult to locate the main body of the opening / closing device inside the panel due to, for example, demands for vehicle miniaturization or compatibility with complex charging ports such as those of electric vehicles. On the other hand, in order to enable the main body to be located outside the panel, it becomes necessary to improve the liquid-tightness of the opening / closing device. As described in Patent Document 3, by covering the push rod of the opening and closing device with a waterproof cover, it is possible to improve the liquid-tightness.

[0005] However, if the opening and closing device is completely sealed to improve liquid-tightness, pushing the push rod into the main body compresses the air inside the main body, increasing the pressure inside the main body, making opening and closing operations difficult. Furthermore, although this opening and closing mechanism allows the lid to be opened and closed, it is not possible to install a locking mechanism using a locking portion. The present invention assumes that the main body, which partially houses the push rod of the opening and closing device, is positioned outside the panel, and its technical objective is to prevent an increase in pressure inside the main body due to opening and closing operations while improving the liquid-tightness of the opening and closing device without completely sealing it. [Means for solving the problem]

[0006] The lid opening and closing device according to the present invention comprises: The device comprises a push rod (3), a housing (20) that movably supports the push rod (3), and a ventilation section (6) provided in the housing (20), The ventilation section (6) has a concentration chamber (61) and a skirt section (63) having an open end (65), The concentration chamber (61) communicates with the housing (20), The skirt portion (63) communicates with the concentration chamber (61) through an opening (62), and the cross section of the open end (65) is larger than the cross section of the opening (62).

[0007] By providing a lid opening and closing device with such a configuration, it is possible to improve the liquid-tightness and enable the push rod to move smoothly.

[0008] Furthermore, the lid opening and closing device according to the present invention has the above-mentioned configuration, The ventilation section (6) may have liquid flow guide sections (64, 66), and the liquid flow guide sections (64, 66) may be provided on the open end (65) side of the skirt section (63).

[0009] By providing a lid opening / closing device with this configuration, it is possible to improve the water discharge effect in the unlikely event that water enters the lid opening / closing device.

[0010] Furthermore, the lid opening and closing device according to the present invention has the above-mentioned configuration, The cross section of the open end 65 of the skirt 63 may be large enough to prevent capillary action of water.

[0011] By using a lid opening and closing device having such a configuration, it is possible to reduce the risk of water entering from the outside through the ventilation portion.

[0012] Furthermore, the lid opening and closing device according to the present invention has the above-mentioned configuration, The direction of the skirt portion (63) from the concentration chamber (61) toward the open end (65) may be a direction intersecting the moving direction of the push rod (3).

[0013] By configuring the lid opening and closing device in this way, the moving direction of the push rod is arranged parallel to the horizontal direction, and the water can be advantageously discharged.

[0014] Furthermore, the lid opening and closing device according to the present invention has the above-mentioned configuration, The skirt portion (63) may be flared from the aperture (62) toward the open end (65).

[0015] A skirt having such a configuration not only has the effect of discharging water and preventing water from entering, but also makes it easier to mold the resin. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a lid opening and closing device that can prevent the opening and closing operation from becoming difficult while improving the liquid-tightness. The lid opening and closing device may also be equipped with a locking mechanism as required. [Brief explanation of the drawings]

[0017] [Figure 1] 1(A) to 1(C) are schematic diagrams showing the main operating states of the opening and closing device 100. FIG. [Figure 2] 2(A) to 2(C) are schematic diagrams illustrating the structure of the opening and closing device 100. FIG. [Figure 3] 3(A) and 3(B) are schematic diagrams illustrating the function of the ventilation section 6. FIG. [Figure 4] 4(C) and 4(D) are schematic diagrams illustrating the function of the ventilation section 6. FIG. [Figure 5] 5(A) to 5(C) are schematic diagrams illustrating the ventilation section 6 of the opening and closing device 100 of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the following embodiments are not intended to limit the scope of the present invention. Furthermore, the same or similar components will be designated by the same reference numerals, and their description may be omitted.

[0019] Furthermore, terms used in this specification that specify shapes, geometric conditions, and their degrees, such as "parallel," "orthogonal," and "identical," as well as values ​​of lengths and angles, are not to be construed as being bound by strict meanings, but rather as including a range within which similar functions can be expected.

[0020] (Embodiment 1) The opening and closing device 100 (lid opening and closing device) will be described below with reference to the drawings. An example in which the device is applied to a lid of a power supply port will be described below, but the device can also be applied to other lids such as a lid of a fuel filler port.

[0021] Figure 1 is a schematic diagram showing the main operating states of the opening / closing device 100. Figure 1(A) is an external view of the opening / closing device 100 with the lid in an open state (unlocked state), Figure 1(B) is an external view of the opening / closing device 100 with the lid in a closed state (locked state), and Figure 1(C) is a schematic diagram showing a state in which the lid is locked by the opening / closing device 100 attached to the vehicle body.

[0022] The opening and closing device 100 has a main body 1, a bottom support part 2, and a push rod 3. The main body 1 and the bottom support part 2 are fixed together to form a housing 20 that houses the push rod 3 and supports the push rod 3 so that it can move back and forth. The housing 20 also supports the push rod 3 so that the push rod 3 can rotate as well as reciprocate. A locking portion 4 (locking member) is provided at the tip of the push rod 3, and a buffer member 5 is provided at the tip of the locking portion 4. The buffer member 5 serves as an abutment portion with which the inner wall surface of the lid 7 comes into contact.

[0023] A ventilation section 6 (ventilator) is provided in the bottom support section 2. As shown in FIG. The push rod 3 is configured so that it can alternately achieve a contracted state and an extended state relative to the main body 1 each time it is pushed in the longitudinal direction (x direction). The ventilation section 6 may be incorporated into the wall surface 21 of the bottom support section 2 .

[0024] In the unlocked state shown in Fig. 1(A), the push rod 3 remains extended from the main body 1. In the unlocked state, when the inner wall of the lid 7 (shown in Fig. 1(C)) presses the tip of the locking part 4 (buffer member 5) and pushes the push rod 3 into the main body 1, a known cam mechanism (knock cam mechanism) provided in the opening / closing device 100 causes the locking part 4 to rotate together with the push rod 3, transitioning to the state shown in Fig. 1(B), and maintaining that state. The locking portion 4 shown in FIG. 1(B) and the locking portion 4 shown in FIG. 1(A) are rotated by 90° relative to each other about a rotation axis parallel to the longitudinal direction of the push rod 3. The knock cam mechanism is described in detail in, for example, Patent Document 2.

[0025] 1, the direction parallel to the direction (longitudinal direction) in which the push rod 3 of the opening and closing device 100 reciprocates is defined as the x direction, and the direction perpendicular to the x direction is defined as the y direction. When attached to a vehicle body, the x direction is preferably the horizontal direction, and the y direction is preferably the vertical direction. The x direction may be inclined, for example, by about 10° or less with respect to the horizontal direction as appropriate.

[0026] In the locked state shown in Fig. 1(B), the push rod 3 remains retracted within the main body 1. In the locked state, when the inner wall of the lid 7 presses against the tip of the locking portion 4 (buffer member 5), pushing the push rod 3 further into the main body 1, the cam mechanism causes the locking portion 4 to rotate together with the push rod 3, and the push rod 3 extends, transitioning to the state shown in Fig. 1(B).

[0027] 1(C) shows a state in which the lid 7 is locked by the locking portion 4 of the push rod 3. The lid 7 is movably attached to a panel of the vehicle body by a hinge or the like (not shown).

[0028] A locked portion 71 is provided on the inside of the lid 7. The locked portion 71 has an opening that reflects the shape of the locking portion 4, and is configured to engage with the locking portion 4 in the direction shown in Fig. 1(B) and to be disengaged from the locking portion 4 in the direction shown in Fig. 1(A). Therefore, when the push rod 3 is extended from the main body 1 as shown in Figure 1(A), the lid 7 can be released, and when the push rod 3 is retracted into the main body 1 as shown in Figure 1(B), the lid 7 is locked in the closed position by the locking portion 4. In this way, the opening and closing device 100 can function as a lid lock mechanism.

[0029] As shown in FIG. 1(C), the main body 1 may have a fixing auxiliary part 9 for attaching it to a wall surface 8 (fixed wall) of the vehicle body that constitutes the power supply part. A flange portion 10 is provided at the tip side of the main body 1 of the opening and closing device 100, and the wall surface 8 of the car body is sandwiched between the flange portion 10 and the fixing auxiliary portion 9, so that the opening and closing device 100 can be attached to the wall surface 8 of the car body. When the opening and closing device 100 is attached to the vehicle body, it is attached so that the ventilation section 6 is positioned on the lower side in the vertical direction, for example, as shown in FIG. 1(C).

[0030] 2A and 2B are diagrams illustrating the structure of the opening and closing device 100. Fig. 2A is a cross-sectional view schematically illustrating the internal structure of the opening and closing device 100, Fig. 2B is a partially enlarged exploded view of the main body 1 and the bottom support part 2, and Fig. 2C is a perspective view of the bottom support part 2. FIG. 2(A) is a cross-sectional view of the opening and closing device 100 in the state shown in FIG. 1(B).

[0031] The main body 1 has a first opening 1A and a second opening 1B at both ends, the push rod 3 is inserted through the first opening 1A, and the locking portion 4 protrudes outward from the first opening 1A. At the first opening 1A, the push rod 3 and the main body 1 are slidably and liquid-tightly sealed by a sliding part seal 11. At the second opening 1B, the main body 1 and the bottom support part 2 are liquid-tightly sealed by a fixed part seal 12. The bottom support part 2 has a support pillar 14, and a spring 13 is supported by the support pillar 14. The push rod 3 can move within the main body 1 in the longitudinal direction of the support pillar 14. The spring 13 biases the push rod 3 in a direction in which it projects (extends) from the main body 1. That is, the spring 13 biases the push rod 3 in a direction that shifts the push rod 3 from the locked state to the unlocked state.

[0032] The cam mechanism between the rotary slider 15 and the bottom support part 2 converts the linear motion of the push rod 3 into rotational motion of the push rod 3 and the locking part 4, and by utilizing the linear and rotational motion, the unlocked state shown in Figure 1(A) and the locked state shown in Figure 1(B) can be alternately selected and maintained. The mechanism for alternately changing the unlocked state and the locked state of the opening / closing device 100 is not limited to the above configuration and any known mechanism can be used. However, if a cam mechanism using a rotating slider 15 is used, it is advantageous for making the opening / closing device 100 smaller.

[0033] As shown in FIG. 2(B), the main body 1 and the bottom support part 2 each have an engaging part 16 (fixed part) and an engaged part 17 (fixed receiving part). The main body 1 and the bottom support part 2 can be fixed together by inserting the support posts 14 of the bottom support part 2 into the main body 1 and engaging the engaging part 16 with the engaged part 17. In addition, a fixed part seal 12 is provided between the main body 1 and the bottom support part 2 to ensure liquid-tightness. The fixed part seal 12 is made of an elastic material such as resin.

[0034] The bottom support part 2 is closed by a wall surface 21 on the side facing the main body 1 (or the first opening 1A and the second opening 1B). The ventilation section 6 is provided in contact with the wall surface 21 of the bottom support section 2, and has a concentration chamber 61, a skirt section 63, and a protrusion section 64 (liquid flow guide section). The ventilation section 6 can be manufactured integrally with the bottom support section 2 by resin molding. The wall surface 21 is connected to the concentration chamber 61 , the concentration chamber 61 is connected to the skirt portion 63 , and the skirt portion 63 is connected to the protrusion portion 64 . The protrusion 64 is disposed on the end surface of the skirt portion 63 and has a protruding shape.

[0035] As shown in Figure 2(A), the end surface 60 of the concentration chamber 61 on the wall surface 21 side is open, and the concentration chamber 61 is connected to the internal space of the bottom support part 2 (the internal space of the housing 20) via the end surface 60. An opening 62 is provided at one end of the skirt 63 on the concentration chamber 61 side (the upper end in FIG. 2(C)), and the opening 62 allows the inside of the concentration chamber 61 to communicate with the inside of the skirt 63. An open end 65 is provided at the other end of the skirt portion 63 (the lower end in the center of FIG. 2(C)). In addition, a protrusion 64 is provided on the other end (open end 65 side) of the skirt portion 63. The ventilation section 6 can be formed integrally with the wall surface 21 during the process of manufacturing the bottom support section 2 by resin molding. In the drawing, the ventilation part 6 protrudes from the wall surface 21, but the ventilation part 6 may be incorporated inside the bottom support part 2.

[0036] 3A and 3B are schematic diagrams illustrating the function of the ventilation portion 6. For the sake of visibility, the spring 13 is omitted in FIGS. 3A and 3B. When the opening / closing device 100 is attached to the vehicle body, the ventilation section 6 is provided vertically below the wall surface 21, and the concentration chamber 61, (opening section 62), skirt section 63, and protrusion section 64 are arranged in this order from top to bottom in the vertical direction. Figure 3(A) shows the state in which the push rod 3 is pushed into the main body 1 (in the direction of arrow X1) (by the pressing force from the lid 7), and Figure 3(B) shows the state in which the push rod 3 is pushed out of the main body 1 (in the direction of arrow X2) (by the biasing force of the spring 13). The dotted arrows in FIGS. 3(A) and 3(B) indicate the air flow near the ventilation portion 6.

[0037] As shown in Figure 3(A), when the push rod 3 moves in the direction of arrow X1 (x direction), the air in the area surrounded by the main body 1 and the bottom support part 2 (hereinafter referred to as the internal area) flows into the concentration chamber 61 opposite the push rod 3. The direction of the flow path of the skirt portion 63 (parallel to the direction from the concentration chamber 61 toward the open end 65) intersects, and is preferably perpendicular to, the direction of movement of the push rod 3. The internal region surrounded by the inner wall of the skirt portion 63 forms a flow path for gas that flows vertically downward from the opening portion 62. Therefore, the air in the internal region flows along the direction of movement of the push rod 3, and the compressed air flows into the concentration chamber 61. The air that flows into the concentration chamber 61 passes through the opening 62 in the skirt portion 63, and (preferably) has its path bent in an L shape, flows inside the skirt portion 63, and is exhausted to the outside of the ventilation portion 6 from the open end 65 (see the dotted arrow in Figure 3(A)).

[0038] It should be noted that the direction of the flow path of the skirt portion 63 does not exclude being parallel to the moving direction of the push rod 3. However, if there are walls at the opposing ends of the concentration chamber 61 in the X1 direction and the air flow is L-shaped, part of the air flowing in the X1 direction will collide with the opposing wall of the concentration chamber 61, resulting in an air compression effect. As will be described later, this can improve the effectiveness of discharging water that may have entered the inside of the opening / closing device 100. It is also possible to remove frozen material around the opening. Furthermore, by configuring the air flow path in an L-shape, it is possible to effectively prevent foreign matter (mud, dust, etc.) from entering and to prevent damage to the inside of the opening and closing device 100.

[0039] As shown in Figure 3(B), when the push rod 3 moves in the direction of arrow X2 (-x direction), the pressure in the internal region is reduced, and outside air flows into the concentration chamber 61 via the skirt portion 63 (and the openings 62) and into the internal region. That is, the outside air flows vertically upward, and in the concentration chamber 61, its path is bent into an L-shape and it flows along the direction of movement of the push rod 3 (see the dotted arrow in Figure 3(B)). If the area surrounded by the main body 1 and the bottom support part 2 is sealed, the air pressure in that area will hinder the movement of the push rod 3, but as described above, the ventilation part 6 suppresses changes in air pressure that resist the movement of the push rod 3.

[0040] In the unlikely event that water does enter the internal area, the exhaust process shown in Figure 3(A) has the effect of expelling the water. If the ventilation section 6 is installed so that it is positioned vertically downward, as shown in Figure 1(C), the water that has entered the internal area will collect below the main body 1 due to gravity. The air in the internal area flows toward the concentration chamber 61 of the ventilation section 6, which is the only exhaust path. This air flow sends the water into the concentration chamber 61. The air then passes through the openings 62. The diameter of the opening 62 is set to be narrower than the width w and depth D of the space within the concentration chamber 61 (see FIGS. 2(B) and 2(C)). The air whose pressure has been increased in the concentration chamber 61 passes through the opening 62, which functions as a nozzle, and the flow rate is increased. Water, together with the air whose flow rate has been increased, is discharged (exhausted) from the opening 62 to the outside via the skirt portion 63. The air flow also promotes the discharge of foreign matter and also prevents the entry of foreign matter.

[0041] Furthermore, reducing the inner diameter of the skirt portion 63 is effective in preventing water and foreign matter from entering the internal region through the ventilation portion 6, which is a communication path with the outside air. However, water has the property of moving through thin tubes due to capillary action. Therefore, if the inner diameter of the skirt portion 63 is reduced, water will move from the skirt portion 63 to the concentration chamber 61 due to capillary action. Furthermore, when the push rod 3 is pushed in the X1 direction, the resistance to air discharge will increase.

[0042] Therefore, the skirt portion 63 is set to a shape (flared shape) in which its cross section (cross-sectional area) gradually (or in steps) increases from the concentration chamber 61 side (upper end) where the opening 62 is provided to the other side (lower end) opposite the concentration chamber 61. Preferably, as shown in Fig. 3, the cross section of the skirt portion 63 is circular, and the diameter thereof can be configured to increase monotonically from the concentration chamber 61 side to the other side. In this way, the flow velocity increased by the openings 62 is prevented from being slowed down by the skirt portion 63, and water can be effectively discharged.

[0043] The cross section (or inner diameter) of the lower end (open end 65) of the skirt portion 63 on which the protrusion portion 64 is provided is set to a size that does not cause capillary action of water, preferably to have a circular inner diameter of 4 mm or more, for example. As a result, the movement of water from the outside due to capillary action is prevented. On the other hand, the cross-sectional size of the opening 62 can be set small (for example, but not limited to, an inner diameter of 1 mm or less) to prevent the intrusion of water and foreign matter. The shape and arrangement of the skirt 63 as described above can minimize the intrusion of water and foreign matter. In addition, the flared skirt portion 63 does not obstruct the flow of air released from the opening 62, and has the effect of enhancing the discharge of water and foreign matter by the air flow, as well as preventing water from accumulating inside the skirt portion 63.

[0044] Furthermore, as shown in FIG. 4(D), a plurality of protrusions 64 are locally provided on the lower end of the skirt portion 63. Water adhering to the inner wall surface or outer wall surface of the skirt portion 63 moves to the protrusions 64 due to gravity. As a result, the water is locally collected (concentrated) at the protrusions 64, reducing the contact area between the water and the lower end of the skirt portion 63, reducing the adhesive force of the water and concentrating (increasing) the weight of the water. As a result, the water is promoted to fall (as shown by the dotted line). The protrusions 64 form a liquid flow guide that guides the downward movement (flow) of the water (liquid).

[0045] The shape of the protrusion 64 is not limited to the shape shown in Fig. 4(D). For example, the cross-sectional shape of the protrusion 64 along the circumferential direction may be tapered (rather than rectangular) to form, for example, a triangle or a trapezoid. FIG. 4 shows an example in which the number of protrusions 64 is four, but the number is not limited to four.

[0046] The skirt portion 63 has the effect of preventing capillary action, and the protrusions 64 have the effect of promoting the dropping of adhering water, thereby minimizing the risk of water intrusion.

[0047] The inner diameter (or cross-sectional area) of the inner wall of the skirt portion 63 simply needs to increase from the upper end to the lower end. As shown in Fig. 4(C), the inner wall surface of the skirt portion 63 may have a region having a shape that is inclined with respect to the longitudinal direction (y direction) of the skirt portion 63 and a region that is parallel to the longitudinal direction (y direction) (with the same inner diameter), or all of the wall surfaces may have an inclined shape. Such a flared shape of the skirt portion 63 also makes it easier to form the skirt portion 63 with a push pin during the manufacturing process of the bottom support part 2.

[0048] Furthermore, the opening 62 directly connected to the internal region may be provided with a labyrinth-structured, curved air passage instead of the skirt 63 to prevent the intrusion of water or foreign matter. However, it is difficult to manufacture a bottom support part 2 having such a complex passage structure by resin molding, and this would impede the smooth flow of air and reduce the effectiveness of the air flow in discharging liquid. The ventilation section 6 of the above configuration has a structure in which the diameter of the air passage changes monotonically, making it possible to easily manufacture the bottom support section 2 by resin molding, and also to obtain an effective liquid discharge function by the function of the opening section 62 as a nozzle.

[0049] Furthermore, in order to achieve both improved liquid-tightness and ease of movement of the push rod 3, it is also possible to provide a ventilation hole fitted with a special filter that allows only gas to pass through and blocks liquids in the bottom support part 2. However, by configuring the ventilation part 6 as described above, the additional step of attaching a separate filter is not required, and the storage and management of the filter as a component is also unnecessary.

[0050] As described above, a cover is not used to cover the push rod 3 in order to improve liquid tightness, so there is no need for a process to attach the cover, and there is no need to store or manage the cover as a part of the opening and closing device 100, which reduces the workload on workers.

[0051] Although the opening and closing device 100 equipped with a locking mechanism has been described, it is also possible to provide a simple opening and closing device that only opens and closes the lid by providing the ventilation section 6 as described above in a housing that movably supports a push rod that does not have a locking mechanism such as the locking section 4. The presence or absence of the locking section 4 can be determined depending on whether a locking mechanism is required.

[0052] (Embodiment 2) In the first embodiment, the skirt portion 63 is provided at its lower end with a protrusion 64, which is a liquid flow guide portion having a protrusion shape, for guiding the falling of water (liquid droplets). In the second embodiment, instead of the protrusions 64, the skirt 63 is provided with a liquid flow guide (inclined portion 66) having a lower end surface 66S inclined relative to the longitudinal direction of the skirt 63, thereby promoting the falling of water.

[0053] 5(A) is a perspective view showing an example of an opening and closing device 100 of the second embodiment, FIG. 5(B) is a cross-sectional view of the ventilation section 6, and FIG. 5(C) is a partially enlarged view of the vicinity of the ventilation section 6. As shown in FIG. 5, an inclined portion 66 (liquid flow guide portion) is provided at the lower end of the skirt portion 63. The inclined portion 66 has, for example, a shape obtained by cutting a cylinder obliquely (obliquely cut cylindrical shape). 5(B), the lower end surface 66S of the inclined portion 66 has a predetermined angle θ (0<θ<90°) with respect to the longitudinal direction (y direction in the figure) of the skirt portion 63. The angle θ can be, for example, 30 to 70°, but is not limited to this.

[0054] Water (liquid) adhering to the inner wall of the skirt portion 63 moves downward due to gravity. As shown by arrows A and B in Figure 5(C), the water moves along the lower end surface 66S of the inclined portion 66 and is collected at the tip of the inclined portion 66, whereupon the water droplets (liquid droplets) grow larger. The further away from the skirt portion 63 (the further downward the water moves), the smaller the contact area with the inclined portion 66 becomes, and then the water droplets fall downward from the tip of the inclined portion 66, as shown by the dotted line in Figure 5(C). In this way, the inclined portion 66 has the effect of guiding the movement (flow) of water (liquid) and promoting the falling of water (liquid). [Industrial Applicability]

[0055] The lid opening and closing device of the present invention is based on the premise that the main body is placed outside the panel, and improves the liquid-tightness of the opening and closing device while enabling the push rod to move smoothly, thereby preventing the opening and closing operation from becoming difficult. The lid opening and closing device can also be provided with a lid locking mechanism. The opening and closing device of the present invention can be applied to other lids such as fuel filler lids in addition to power supply port lids, and therefore has high industrial applicability. [Explanation of symbols]

[0056] 100 Opening and closing device (lid opening and closing device) 1 Main body 2 Bottom support 21 Wall (bottom wall) 3 push rods 4 Locking part 5. Cushioning material 6 Ventilation section (ventilator) 60 End face 61 Concentration Room (Chamber) 62 Opening part 63 Skirt Club 64 Projection (liquid flow guiding part) 65 Open end 66 Inclined part (liquid flow guide part) 66S bottom end surface 7 Lid 71 Locked part 8 Wall (fixed wall) 9 Fixing auxiliary part 10 Flange 11 Sliding part seal 12 Fixed part seal 13 Spring 14 Posts 15 Rotating slider 16 Engagement part (fixed part) 17 Engaged portion (fixed receiving portion) 20. Housing

Claims

1. The device comprises a push rod (3), a housing (20) that movably supports the push rod (3), and a ventilation section (6) provided in the housing (20), The ventilation section (6) has a concentration chamber (61) and a skirt section (63) having an open end (65), The concentration chamber (61) communicates with the housing (20), The skirt portion (63) communicates with the concentration chamber (61) through an opening portion (62), A lid opening and closing device characterized in that the cross section of the open end (65) is larger than the cross section of the opening (62).

2. The ventilation section (6) has a liquid flow guide section (64, 66), 2. The lid opening and closing device according to claim 1, wherein the liquid flow guide portions (64, 66) are provided on the open end (65) side of the skirt portion (63).

3. 2. The lid opening and closing device according to claim 1, wherein the cross section of the open end (65) of the skirt portion (63) is sized so that capillary action of water does not occur.

4. 2. The lid opening / closing device according to claim 1, wherein the direction of the skirt portion from the concentration chamber toward the open end portion intersects with the moving direction of the push rod.

5. 5. The lid opening and closing device according to claim 1, wherein the skirt portion (63) has a shape that widens from the opening portion (62) toward the open end portion (65).

Images