Water drain lid

Abstract

To provide an inexpensive water drain lid which well drains water inside a storage body to the outside and has a structure that makes it difficult to flow back from the outside.SOLUTION: An outer peripheral wall portion 120 erected on a lid bottom portion 100, an outer drainage channel portion 190 in which a drainage hole portion 110 is formed and which guides infiltrated water to the drainage hole portion 110, a backflow prevention wall 130 and a partition wall 140 formed around the drainage hole portion 110, and an inner drain channel portion 180 capable of storing infiltrated water and draining it to the outer drainage channel portion 190 via a drain opening 170 are integrally formed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a drain cover. [Background technology]

[0002] Generally, the housings of electronic devices installed outdoors, or the packaging materials (hereinafter referred to as "housing bodies") used when transporting electronic devices, etc., may have a waterproof structure to prevent corrosion of electronic circuits or structures, etc., due to the infiltration of rainwater, etc. into the electronic devices or housings, etc. stored inside. In this case, by providing a drainage lid at the bottom of the storage body, even if rainwater or the like (hereinafter simply referred to as "water") seeps inside, the drainage lid will drain the water that has seeped inside to the outside.

[0003] As such a drainage cover, a technique has been proposed that has a structure that makes it difficult for water to flow back into the housing through the drainage cover even during a rainstorm, for example (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4484683 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the invention described in Patent Document 1 requires a complicated drainage structure on the housing side, and the increased number of components increases costs, which is a problem.

[0006] Therefore, the present invention has been made in consideration of the above-mentioned problems, and provides an inexpensive drainage lid that allows water inside the storage body to be drained to the outside efficiently and has a structure that makes it difficult for water to flow back from the outside. [Means for solving the problem]

[0007] Form 1: One or more embodiments of the present invention propose a drainage lid that is attached to a storage body, and is integrally formed with: an outer peripheral wall portion that stands upward in a ring shape from the outer edge portion of the bottom of the lid; an outer drainage channel portion that is formed radially inward of the outer peripheral wall portion and has drainage holes that can drain water to the outside of the storage body; a plurality of backflow prevention wall portions that are formed radially inward of the drainage holes and extend upward from the bottom of the lid, blocking water from seeping in through the drainage holes; and an inner drainage channel portion that is formed radially inward of the plurality of backflow prevention wall portions and communicates with the interior of the storage body, and that can drain water to the outer drainage channel portion through drainage openings formed between the plurality of backflow prevention wall portions. In one or more embodiments of the drain cover of the present invention, when water seeps into the interior of the housing, the seeping water is guided to an internal drainage channel formed in communication with the interior of the housing, drained from the internal drainage channel to an external drainage channel through drainage openings formed between the backflow prevention walls, and then drained from the external drainage channel to the outside of the housing through drainage holes. Furthermore, if water flows back from the outside through the drain hole due to, for example, a storm, the backflowing water can be blocked by the backflow prevention wall, preventing it from entering the internal drainage channel from the external drainage channel. Furthermore, by integrally forming the drainage structure from the inside to the outside of the storage body and the backflow prevention structure from the outside to the inside, the number of parts can be significantly reduced, making it possible to provide a drainage lid at an inexpensive price.

[0008] Form 2: One or more embodiments of the present invention propose a drain cover that is attached to the storage body by forming claw portions with radially protruding protrusions on the multiple backflow prevention wall portions, and clamping the bottom plate of the storage body between the protrusions and a support portion that supports the bottom plate of the storage body.

[0009] Form 3: One or more embodiments of the present invention propose a drain cover in which the inner drainage channel portion is formed in a stepped manner relative to the outer drainage channel portion, the outer drainage channel portion is formed at a lower position than the inner drainage channel portion, and the lower end position of the drainage opening is lower than the bottom plate of the storage body.

[0010] Form 4: One or more embodiments of the present invention propose a drain cover in which the inner drainage channel section has a downward slope from the center to the outer periphery, and which can store a predetermined amount of drainage water from inside the storage body at the outer periphery.

[0011] Mode 5: One or more embodiments of the present invention propose a drain cover in which the outer drain channel portion is formed with a downward slope so that the drain hole portion is at its lowest. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide an inexpensive drainage lid that allows water inside a storage body to be efficiently drained to the outside and has a structure that makes it difficult for water to flow back from the outside. [Brief explanation of the drawings]

[0013] [Figure 1] 1A and 1B are three-view and bottom views of a drain cover according to an embodiment of the present invention. [Figure 2] 2 is a cross-sectional view taken along line AA in the direction of arrow A in FIG. 1. [Figure 3] 1 is a perspective view of a drain cover according to an embodiment of the present invention when fitted to a storage body. FIG. [Figure 4] 2 is a cross-sectional view taken along line AA of FIG. 1 when the drain cover according to the embodiment of the present invention is fitted to the storage body, as viewed from the direction of arrow A. FIG. [Figure 5] 2 is a cross-sectional view taken along line BB of FIG. 1 when the drain cover according to the embodiment of the present invention is fitted to the storage body, as viewed from the direction of arrow B. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] <Embodiment> The drain cover 1 according to this embodiment will be described below with reference to FIGS. 1 to 5. FIG. The arrow FR shown in the drawings indicates the front view of the drain cover 1 shown in Fig. 1, the arrow UP indicates the upward direction when viewed from the front, and the arrow RH indicates the right direction when viewed from the front. In the following description, when the directions of up / down, front / back, and left / right are used, they refer to the up / down direction when viewed from the front, the front / back direction when viewed from the front, and the left / right direction when viewed from the front, unless otherwise specified.

[0015] <Configuration of drain cover 1> The structure of a drain cover 1 according to this embodiment will be described with reference to FIG.

[0016] As shown in Figure 1, the drainage lid 1 of this embodiment is a drainage lid that is attached to a storage body, and is composed of a lid bottom 100, a drainage hole portion 110, an outer wall portion 120, a backflow prevention wall portion 130, a partition wall 140, a claw portion 150a, a support portion 160, a drainage opening 170, an inner drainage channel portion 180, and an outer drainage channel portion 190. The drain cover 1 is integrally formed from a resin such as polycarbonate and is open at the top when viewed from the front. The material is not limited to resin, and it may be made of rubber.

[0017] The lid bottom 100 has a substantially circular outer shape when viewed from below, and a convex portion is formed in the center that is substantially concentric with the outer shape when viewed from below and protrudes upward when viewed from the front. Further, on the lower side of the lid bottom portion 100 in front view, an outer drainage channel portion 190 is formed in a doughnut shape outside the convex portion.

[0018] Drain hole 110 is formed in at least one location on lid bottom 100, and allows water that has entered the storage body to be discharged to the outside of the storage body. In this embodiment, drain hole 110 is formed in four locations on lid bottom 100, at equal angular intervals (90 degree intervals) around the central axis when viewed from below. The drain hole 110 is a substantially cylindrical cavity that opens substantially vertically upward from the lower surface of the lid bottom 100 and is formed by penetrating the lid bottom 100 .

[0019] The outer peripheral wall portion 120 is an annular outer peripheral wall that stands upward from the outer edge of the lid bottom portion 100, and the upper side of the outer peripheral wall portion 120 is open when viewed from the front. The outer peripheral wall portion 120 is joined to the outer edge portion of the lid bottom portion 100. An outer drainage channel portion 190 is formed radially inside the outer peripheral wall portion 120, and a drainage hole portion 110 is formed in the outer drainage channel portion 190.

[0020] The backflow prevention wall portion 130 is formed radially inward of the drain hole portion 110 from the lid bottom portion 100 toward the upper side, and blocks water from entering through the drain hole portion 110. The backflow prevention wall portion 130 is formed opposite the outer peripheral wall portion 120 , and the drain hole portion 110 is provided between the backflow prevention wall portion 130 and the outer peripheral wall portion 120 .

[0021] The backflow prevention wall 130 is erected on the outer edge of the convex portion of the lid bottom 100 . Further, the backflow prevention wall portion 130 is formed with a claw portion 150a. The backflow prevention wall 130 constitutes a plate-like wall directly facing the position of the lid bottom 100 where the drain hole 110 is formed. Furthermore, a plurality of backflow prevention walls 130 (four in this embodiment) are arranged around the outer edge of the convex portion of the lid bottom 100 in the circumferential direction. An inner drainage channel section 180 is formed radially inward of the multiple backflow prevention wall sections 130, and water can be drained from the inner drainage channel section 180 to the outer drainage channel section 190 through drainage openings 170 formed between the multiple backflow prevention wall sections 130.

[0022] The partition wall 140 is formed outside the backflow prevention wall portion 130 to connect the backflow prevention wall portion 130 and the outer peripheral wall portion 120, with one end joined to the outer peripheral wall portion 120 and the other end joined to the lower side of the backflow prevention wall portion 130. The lower side of the partition wall 140 is joined to the lid bottom 100 . In addition, the partition wall 140 forms a partition between adjacent outer drainage channel sections 190 so that each outer drainage channel section 190 has one drainage opening 170 and one drainage hole section 110, as shown by the thick dashed fan-shaped line in the plan view of Figure 1.

[0023] A wall hole penetrating radially is formed in the center of the backflow prevention wall portion 130, and the claw portion 150a is provided hanging down from the upper end of the wall hole along the wall surface of the backflow prevention wall portion 130. To make the claw portion 150a elastic, U-shaped slits are provided around the claw portion 150a on both the left and right sides as viewed from the front and on the lower side, allowing water inside the storage body (around the drain cover 1) to be guided to the inner drainage channel portion 180 through the slits. The lower tip of the claw portion 150a has a protrusion 150b that protrudes radially outward and has a cross section that is roughly a right-angled triangle.

[0024] The support portion 160 is formed directly below the protrusion portion 150b, and when fitted into the hole portion 20 of the housing 10 such as the housing of an electronic device, the protrusion portion 150b and the support portion 160 sandwich the bottom plate of the housing 10 from above and below. In this embodiment, the support portion 160 is formed directly below the protrusion portion 150b, but the support portion 160 is not limited to being formed directly below the protrusion portion 150b as long as the bottom plate of the storage body 10 is sandwiched between the protrusion portion 150b and the support portion 160. In other words, the support portion 160 may be formed on the backflow prevention wall portion 130 or on another location on the lid bottom portion 100.

[0025] The drain opening 170 opens to the side of the backflow prevention wall portion 130 from the inner drainage channel portion 180 toward the outer drainage channel portion 190. The drain opening 170 is formed on the outer edge of the convex portion of the lid bottom 100, and the lower end position 170a of the drain opening 170 (the height position of the connecting portion connecting adjacent backflow prevention wall portions 130) is lower than the center of the inner drainage channel portion 180, higher than the outer periphery of the inner drainage channel portion 180, and is also located at a lower position than the upper end of the outer periphery wall portion 120.

[0026] In the inner drainage channel portion 180, the lower end position 170a of the drainage opening 170 is located higher than the outer periphery of the inner drainage channel portion 180, so that it is possible to store only a predetermined amount of water that has entered. In addition, the inner drainage channel section 180 is separated from the outer drainage channel section 190 by a plurality of backflow prevention wall sections 130, and water that has entered the interior of the storage body 10 is guided to the outer drainage channel section 190 through a drainage opening 170 formed between the plurality of backflow prevention wall sections 130. Specifically, the inner drainage channel section 180 is an area surrounded by the backflow prevention wall section 130 as an outer wall in the upper central part of the convex portion of the lid bottom section 100 when viewed from the front, as shown by the thick circular dashed line in the plan view of Figure 1, and is formed in an approximately circular shape when viewed from the top. As shown in FIG. 2, the inner drainage channel portion 180 is formed at a position lower than the upper end of the outer peripheral wall portion 120, and is provided with a downward slope from the center portion toward the outer peripheral portion. The inner drainage channel portion 180 is formed in a stepped manner relative to the outer drainage channel portion 190 so as to communicate with the outer drainage channel portion 190 via a drainage opening portion 170 at a position higher than the outer drainage channel portion 190 .

[0027] The outer drainage channel portion 190 is separated from the inner drainage channel portion 180 by the backflow prevention wall portion 130, and is a drainage channel that guides water discharged from the inner drainage channel portion 180 to the drainage hole portion 110 via the drainage opening portion 170. The outer drainage channel section 190 is formed by being surrounded by the lid bottom section 100, the outer peripheral wall section 120, the backflow prevention wall section 130, and the partition wall 140, as shown by the thick dashed fan-shaped line in the plan view of Figure 1, and a drainage hole section 110 opens in the lid bottom section 100 within the outer drainage channel section 190. Furthermore, the lid bottom 100 in the outer drainage channel portion 190 is formed with a downward slope so that the drainage hole portion 110 is at the lowest point. <Actions and Effects>

[0028] As shown in Figure 3, the drain cover 1 of this embodiment is fitted into a hole 20 provided on the bottom surface of a storage body 10 such as a power conditioner, allowing water accumulated inside to be discharged to the outside while preventing the intrusion of foreign matter such as rainwater from the outside.

[0029] When water seeps into the inside of the storage body 10, the seeping water drips onto the bottom surface of the storage body 10 and, for example, by providing a slope toward the hole 20, the water is collected around the hole 20. Water collected around the hole 20 drips from the slits of the claw 150a or the drain opening 170 into the inner drainage channel 180 and is stored there, as shown by the thick arrow in FIG. The inner drainage channel section 180 has a downward slope from the center to the outer periphery, so that water accumulated in the inner drainage channel section 180 collects at the outer periphery of the inner drainage channel section 180 due to the action of gravity. When the water accumulated in the inner drainage channel section 180 reaches a height exceeding the lower end position 170a of the drainage opening, the water that exceeds the lower end position 170a of the drainage opening drips through the drainage opening 170 into the outer drainage channel section 190, which is formed in a stepped shape at a lower position than the inner drainage channel section 180. Furthermore, the outer drainage channel section 190 has a downward slope so that the drainage hole section 110 is the lowest, so that water that has seeped in moves to the drainage hole section 110 by the action of gravity and can be discharged to the outside through the drainage hole section 110. Furthermore, since the outer drainage channel portion 190 is separated from other adjacent drainage openings 170, the amount of water dripping into the outer drainage channel portion 190 is limited to the amount of water that can be drained by the drainage hole portion 110.

[0030] Furthermore, as shown by the thick arrow in Figure 5, if rainwater or the like flows back from the outside and seeps in through the drainage hole portion 110 due to, for example, a storm, the backflowing rainwater or the like will come into contact with the outer drainage channel portion 190 surrounded by the outer peripheral wall portion 120, the backflow prevention wall portion 130, and the bottom surface of the storage body 10, as shown by the thick dashed line in Figure 5, and drip into the outer drainage channel portion 190. In other words, the outer drainage channel portion 190 can retain backflowing rainwater and the like inside the outer drainage channel portion 190. Furthermore, the outer drainage channel section 190 has a downward slope so that the drainage hole section 110 is the lowest, so that rainwater and the like that has accumulated in the outer drainage channel section 190 moves to the drainage hole section 110 due to the action of gravity, and the drainage hole section 110 can discharge the rainwater and the like that has accumulated in the outer drainage channel section 190 to the outside.

[0031] Furthermore, by configuring the drain opening 170 and the backflow prevention wall portion 130 adjacent to each other, the structure is simplified and the molding of the part can be facilitated. That is, the configuration in which the drain opening 170 and the backflow prevention wall portion 130 are adjacent to each other simplifies the structure, thereby reducing the cost of parts and the number of assembly steps. This allows water inside the container to be efficiently drained to the outside, and provides an inexpensive drainage lid with a structure that makes it difficult for water to flow back from the outside.

[0032] In addition, the drain cover 1 of this embodiment integrally forms an outer wall portion 120, multiple backflow prevention wall portions 130, a drain opening 170, an inner drain channel portion 180, and an outer drain channel portion 190. The drain cover 1 is open at the top when viewed from the front, and the outer peripheral wall 120, backflow prevention wall 130, partition wall 140, and claws 150a do not overlap. Furthermore, since the drain cover 1 does not have a complex shape on the inside, all of its constituent parts can be integrally formed using a molding die. That is, by forming the drain cover 1 as a single molded part, costs can be reduced. Furthermore, the work of attaching the container 10 to the container body 10 is performed by attaching one molded part, thereby reducing the number of work steps. This allows water inside the container to be efficiently drained to the outside, and provides an inexpensive drainage lid with a structure that makes it difficult for water to flow back from the outside.

[0033] In the above embodiment, the outer shape is described as being substantially circular, but it may be rectangular, square, or any other polygonal shape. Furthermore, if drain hole 110 is blocked by grounding the lower surface, a drain groove may be formed on the lower side of lid bottom 100 in front view from drain hole 110 toward the outer periphery.

[0034] The embodiments and examples of the present invention have been described in detail above with reference to the drawings, but the specific configurations are not limited to these embodiments or examples, and designs within the scope of the present invention are also included. [Explanation of symbols]

[0035] 1; Drainage lid 10; Storage body 100; Lid bottom 110;Drainage hole 120;Outer wall 130: Backflow prevention wall 140; Partition wall 150a;Claw part 150b; Protrusion 160;Support part 170; drainage opening 170a; Bottom position 180;Inner drainage channel 190;Outside drainage channel section

Claims

1. A drain cover attached to a storage body, an outer peripheral wall portion extending upward in an annular shape from the outer edge portion of the lid bottom; an outer drainage channel portion formed radially inside the outer peripheral wall portion and having a drainage hole portion that can drain water to the outside of the storage body; a plurality of backflow prevention walls formed radially inside the drain hole from the bottom of the lid upward to block water from entering through the drain hole; an inner drainage channel portion formed radially inside the plurality of backflow prevention wall portions so as to communicate with the interior of the housing, and capable of draining water to the outer drainage channel portion through drainage openings formed between the plurality of backflow prevention wall portions; are integrally formed, a partition wall is formed to separate the outer drainage channel portion from an adjacent outer drainage channel portion so that each outer drainage channel portion has one drain opening portion and one drain hole portion; The inner drainage channel portion is formed by the plurality of backflow prevention wall portions and the drainage opening portion being adjacent to each other, A drain cover characterized in that it is separated from an outer drainage channel portion by the plurality of backflow prevention wall portions.

2. The drain lid described in claim 1, characterized in that the multiple backflow prevention wall portions are formed with claw portions having radially protruding protrusions, and the drain lid is attached to the storage body by clamping the bottom plate of the storage body between the protrusions and a support portion that supports the bottom plate of the storage body.

3. The inner drainage channel portion is formed in a stepped shape relative to the outer drainage channel portion, and the outer drainage channel portion is formed at a lower position than the inner drainage channel portion, 3. The drain cover according to claim 2, wherein the lower end of the drain opening is positioned lower than the bottom plate of the storage body.

4. A drainage lid as described in any one of claims 1 to 3, characterized in that the inner drainage channel portion has a downward slope from the center to the outer periphery, and a predetermined amount of drainage water from inside the storage body can be stored in the outer periphery.

5. 5. The drain cover according to claim 1, wherein the outer drainage channel portion is formed with a downward slope so that the drainage hole portion is at its lowest point.

6. A drain cover as described in Claim 1, characterized in that the inner drainage channel portion is an area surrounded by the multiple backflow prevention wall portions and the drainage opening.

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