Waterproof case

Abstract

To provide a waterproof case capable of suppressing intrusion of rainwater into a housing space of an electronic apparatus with a simple structure.SOLUTION: The waterproof case includes a base having an accommodation space for accommodating the electronic device, and a cover attached to the base so as to close the accommodation space of the base. The base includes a tubular base peripheral wall portion having a first front end portion and a plate-shaped base side wall portion. The cover includes a tubular cover peripheral wall portion having the second front end portion and a plate-shaped base side wall portion. At least a part of the base peripheral wall portion is fitted into the cover peripheral wall portion. In the first portion of the base peripheral wall portion, at least a part of the outer surface extending from the first front end portion toward the base side wall portion is inclined in a direction away from the cover peripheral wall portion toward the base side wall portion. A first drain port that is a through-hole is formed in the base side wall portion at a position corresponding to the first portion.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a waterproof case for an electronic device. [Background technology]

[0002] Electronic devices such as sensors are installed in equipment cases. When installing electronic devices outdoors, the equipment cases are designed to have a waterproof structure that prevents rainwater from entering the storage space of the electronic device to prevent it from coming into contact with the electronic device (see, for example, Patent Document 1). The equipment case described in Patent Document 1 is composed of a main case having a storage space for the electronic device and a case cover that is pivotally attached to the main case so as to be able to open and close and can close the opening of the main case, and has three buffer chambers that can store rainwater that has entered the equipment case. According to the equipment case described in Patent Document 1, even if rainwater enters the equipment case through the gap between the main case and the case cover, the three buffer chambers are arranged side by side, so the rainwater is stored in each buffer chamber. As a result, the equipment case described in Patent Document 1 prevents rainwater from entering the storage space of the electronic device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-175638 Summary of the Invention [Problem to be solved by the invention]

[0004] The device case described in Patent Document 1 requires the formation of three buffer chambers within the device case, which results in a complex structure and increases manufacturing costs.

[0005] Therefore, one of the objects of the present disclosure is to provide a waterproof case that has a simple structure and that prevents rainwater from entering the storage space for an electronic device. [Means for solving the problem]

[0006] A waterproof case according to the present disclosure includes a base having a storage space for accommodating an electronic device, and a cover attached to the base to close the storage space of the base. The base includes a cylindrical base peripheral wall portion having a pair of opposing openings, a first opening and a second opening, and a first tip portion surrounding the first opening, and a plate-shaped base side wall portion closing the second opening of the base peripheral wall portion. The cover includes a cylindrical cover peripheral wall portion having a pair of opposing openings, a third opening and a fourth opening, and a second tip portion surrounding the third opening, and a plate-shaped cover side wall portion closing the fourth opening of the cover peripheral wall portion. At least a portion of the base peripheral wall portion is fitted from the third opening into the cover peripheral wall portion. In a first portion, which is a part of the base peripheral wall portion, at least a portion of the outer surface extending from the first tip portion toward the base side wall portion is inclined in a direction away from the cover peripheral wall portion as it approaches the base side wall portion. A first drainage port, which is a through-hole, is formed in the base side wall portion at a position corresponding to the first portion. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a waterproof case with a simple structure that prevents rainwater from entering the housing space for an electronic device. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a waterproof case according to a first embodiment. [Figure 2] FIG. 2 is a perspective view of the waterproof case according to the first embodiment, viewed in a different direction from that shown in FIG. [Figure 3] FIG. 3 is an exploded perspective view of the waterproof case according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the waterproof case according to the first embodiment taken along a vertical plane including line AA in FIG. 2 (referred to as a "first vertical cross-section" in this disclosure). [Figure 5]FIG. 5 is a cross-sectional view of the waterproof case according to the first embodiment taken along a horizontal plane including line BB in FIG. 2 (referred to as a "horizontal cross section" in this disclosure). [Figure 6] FIG. 6 is a front view of the base of the waterproof case according to the first embodiment. [Figure 7] FIG. 7 is a bottom view of the base of the waterproof case according to the first embodiment. [Figure 8] FIG. 8 is a side view of the base of the waterproof case according to the first embodiment. [Figure 9] 9 is a cross-sectional view (first vertical cross-sectional view) of the base of the waterproof case according to the first embodiment taken along a vertical plane including the line AA in FIG. [Figure 10] 10 is a cross-sectional view (horizontal cross-sectional view) of the base of the waterproof case according to the first embodiment taken along a horizontal plane including the line BB in FIG. [Figure 11] FIG. 11 is a perspective view of the cover of the waterproof case according to the first embodiment. [Figure 12] 12 is a cross-sectional view (horizontal cross-sectional view) of the cover of the waterproof case according to the first embodiment, taken along a horizontal plane including the line BB in FIG. [Figure 13] FIG. 13 is an exploded perspective view of the waterproof case according to the second embodiment. [Figure 14] FIG. 14 is a first vertical cross-sectional view of the waterproof case according to the second embodiment. [Figure 15] FIG. 15 is a horizontal cross-sectional view of the waterproof case according to the second embodiment. [Figure 16] FIG. 16 is an exploded perspective view of the waterproof case according to the third embodiment. [Figure 17] FIG. 17 is a front view of the base of the waterproof case according to the third embodiment. [Figure 18] FIG. 18 is a side view of the base of the waterproof case according to the third embodiment. [Figure 19]FIG. 19 is a cross-sectional view of the base of the waterproof case according to the third embodiment taken along a vertical plane including line CC in FIG. 18 (referred to as a "second vertical cross-section" in this disclosure). [Figure 20] FIG. 20 is a perspective view of a cover of the waterproof case according to the third embodiment. [Figure 21] FIG. 21 is a cross-sectional view (second vertical cross-section) of the cover of the waterproof case according to the third embodiment, taken along a vertical plane including the line CC in FIG. [Figure 22] FIG. 22 is an exploded perspective view of the waterproof case according to the fourth embodiment. [Figure 23] FIG. 23 is a first vertical cross section of the waterproof case according to the fourth embodiment. [Figure 24] FIG. 24 is a horizontal cross-sectional view of the waterproof case according to the fourth embodiment. [Figure 25] FIG. 25 is a first vertical cross section of the waterproof case according to the fifth embodiment. [Figure 26] FIG. 26 is a horizontal cross-sectional view of the waterproof case according to the fifth embodiment. [Figure 27] FIG. 27 is an exploded perspective view of the waterproof case according to the sixth embodiment. [Figure 28] FIG. 28 is a front view of a modified example of the base of the waterproof case according to the sixth embodiment. [Figure 29] FIG. 29 is a perspective view of the waterproof case according to the seventh embodiment. [Figure 30] FIG. 30 is a cross-sectional view (horizontal cross-sectional view) of the waterproof case according to the seventh embodiment taken along a horizontal plane including the line BB in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] A waterproof case according to the present disclosure includes a base having a storage space for accommodating an electronic device, and a cover attached to the base to close the storage space of the base. The base includes a cylindrical base peripheral wall portion having a pair of opposing openings, a first opening and a second opening, and a first tip portion surrounding the first opening, and a plate-shaped base side wall portion closing the second opening of the base peripheral wall portion. The cover includes a cylindrical cover peripheral wall portion having a pair of opposing openings, a third opening and a fourth opening, and a second tip portion surrounding the third opening, and a plate-shaped cover side wall portion closing the fourth opening of the cover peripheral wall portion. At least a portion of the base peripheral wall portion is fitted from the third opening into the cover peripheral wall portion. In a first portion, which is a part of the base peripheral wall portion, at least a portion of the outer surface extending from the first tip portion toward the base side wall portion is inclined in a direction away from the cover peripheral wall portion as it approaches the base side wall portion. A first drainage port, which is a through-hole, is formed in the base side wall portion at a position corresponding to the first portion. In the present disclosure, the inner surface of the cover peripheral wall portion is the surface facing the base peripheral wall portion, and the outer surface of the cover peripheral wall portion is the surface opposite the inner surface. Also, the outer surface of the base peripheral wall portion is the surface facing the cover peripheral wall portion, and the inner surface of the base peripheral wall portion is the surface facing the storage space for the electronic device, which is opposite the outer surface.

[0011] The waterproof case according to the present disclosure is used with the first portion of the base peripheral wall facing vertically upward. In other words, when the waterproof case is in use, the first portion of the base peripheral wall serves as the upper surface. In the waterproof case according to the present disclosure, even if rainwater falling on the cover during use seeps into the gap between the cover peripheral wall and the base peripheral wall from the second tip of the cover peripheral wall, which is the area surrounding the third opening, the rainwater is guided along the slope of the outer surface of the first portion of the base peripheral wall, which forms the upper surface, to the base side wall opposite the first tip of the base peripheral wall. This prevents rainwater from seeping into the storage space of the base from the first tip of the base peripheral wall. The rainwater guided to the base side wall is discharged to the outside of the waterproof case through the first drainage opening formed in the base side wall. Thus, the waterproof case according to the present disclosure does not have a buffer chamber for storing rainwater inside the waterproof case, but rather is designed to discharge rainwater to the outside of the waterproof case via the slope of the outer surface of the first portion of the base peripheral wall and the first drainage opening in the base side wall. Therefore, the waterproof case according to the present disclosure can suppress the intrusion of rainwater into the storage space of an electronic device with a simple structure. Note that in this disclosure, suppressing the intrusion of rainwater means not only preventing the intrusion of rainwater so that it does not enter the storage space, but also making it more difficult for rainwater to enter the storage space, thereby reducing the intrusion of rainwater.

[0012] In the waterproof case according to the present disclosure, a second drainage port, which is a through-hole, may be formed in the portion of the cover peripheral wall that covers the second portion, which is the portion facing the first portion of the base peripheral wall. Some of the rainwater that has seeped into the gap between the cover peripheral wall and the base peripheral wall from the second tip portion of the cover peripheral wall flows left and right along the outer surface of the first portion of the base peripheral wall when viewed in the axial direction of the base peripheral wall, and down toward the second portion, which becomes the underside of the waterproof case when in use. With this configuration, the waterproof case according to the present disclosure can discharge rainwater that flows down toward the second portion of the base peripheral wall to the outside of the waterproof case through the second drainage port formed in the cover peripheral wall.

[0013] In the waterproof case according to the present disclosure, the outer surface of the first portion may be bent or curved so as to be convex toward the cover peripheral wall portion when viewed in the axial direction of the base peripheral wall portion. With this configuration, rainwater that has infiltrated from the second tip portion of the cover peripheral wall portion into the gap between the cover peripheral wall portion and the base peripheral wall portion is more likely to flow down the outer surface of the first portion of the base peripheral wall portion to the left and right when viewed in the axial direction of the base peripheral wall portion toward the second portion.

[0014] In a waterproof case according to the present disclosure, the outer surface of the portion of the cover peripheral wall covering the first portion may be bent or curved so as to be convex toward the opposite side from the base peripheral wall, as viewed in the axial direction of the cover peripheral wall. Here, the portion of the cover peripheral wall covering the first portion forms the upper surface when the waterproof case is in use. With this configuration, rainwater falling on the cover during use of the waterproof case is more likely to flow down the outer surface of the portion of the cover peripheral wall that forms the upper surface, as viewed in the axial direction of the cover peripheral wall. This reduces the amount of rainwater that falls on the cover and then seeps into the gap between the cover peripheral wall and the base peripheral wall. As a result, rainwater is prevented from seeping into the electronic device storage space of the waterproof case.

[0015] In a waterproof case according to the present disclosure, the outer surface of the cover peripheral wall may include at least a portion of an inclined surface that slopes downward so that the outer shape of the cross section perpendicular to the axial direction of the cover peripheral wall decreases toward the cover side wall. With this configuration, a portion of rainwater falling on the cover is guided along the slope of the inclined surface on the outer surface of the cover peripheral wall to the cover side wall opposite the leading end of the cover peripheral wall. This reduces the amount of rainwater that falls on the cover and reaches the second leading end of the cover peripheral wall and then seeps into the gap between the cover peripheral wall and the base peripheral wall. As a result, rainwater is prevented from seeping into the space housing the electronic device in the waterproof case.

[0016] In the waterproof case according to the present disclosure, the base may further include a covering wall portion provided on the base side wall portion so as to surround at least a portion of the base peripheral wall portion, the covering wall portion being fitted with the second tip of the cover peripheral wall portion, and the cover peripheral wall portion may be provided with a protrusion that abuts against the covering wall portion. With this configuration of the waterproof case according to the present disclosure, rainwater falling on the cover is less likely to reach the second tip of the cover peripheral wall portion. Therefore, the amount of rainwater that falls on the cover and reaches the second tip of the cover peripheral wall portion and seeps into the gap between the cover peripheral wall portion and the base peripheral wall portion from the second tip can be reduced. As a result, rainwater can be prevented from seeping into the storage space for the electronic device in the waterproof case.

[0017] In the waterproof case according to the present disclosure, a through hole for passing a cable connected to the electronic device may be formed in the second portion of the base peripheral wall, and a cable guide portion may be provided that protrudes along the edge of the through hole toward the storage space in the base. With this configuration of the waterproof case according to the present disclosure, when the cable connected to the electronic device stored in the waterproof case is brought out of the waterproof case, it is possible to prevent rainwater from entering the storage space in the base through the through hole for passing the cable.

[0018] [Details of the embodiments of the present disclosure] Next, an embodiment of a waterproof case according to the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and the description thereof will not be repeated.

[0019] (Embodiment 1) Figures 1 and 2 are perspective views of the waterproof case 100 according to embodiment 1. Figure 3 is an exploded perspective view of the waterproof case 100 according to embodiment 1. Figures 4 and 5 are cross-sectional views of the waterproof case 100 according to embodiment 1.

[0020] 1 to 5, the waterproof case 100 includes a base 1 and a cover 2. The base 1 has an accommodation space 10 for accommodating an electronic device. The cover 2 is removably attached to the base 1 to close the accommodation space 10 of the base 1. The cover 2 attached to the base 1 is fixed to the base 1 by, for example, screws 11 and nuts 12.

[0021] The waterproof case 100 is rectangular and has six faces. When used, the waterproof case 100 is oriented such that the second face 102 having the second drainage port 92 and the first face 101 opposite the second face 102 are horizontal, with the first face 101 facing upward and the second face 102 facing downward.

[0022] Examples of the electronic device housed in the waterproof case 100 include various sensors such as a vibration sensor, a temperature sensor, a current sensor, etc. However, the electronic device housed in the waterproof case 100 is not limited to a sensor.

[0023] (Base structure) Fig. 6 is a front view of the base 1. Fig. 7 is a bottom view of the base 1. Fig. 8 is a side view of the base 1. Figs. 9 and 10 are cross-sectional views of the base 1.

[0024] 6 to 10, the base 1 includes a cylindrical base peripheral wall 3, a plate-like base side wall 4, and a covering wall 5 arranged around the base peripheral wall 3. The space surrounded by the base peripheral wall 3 and the base side wall 4 is an accommodating space 10 for the electronic device. The base peripheral wall 3, the base side wall 4, and the covering wall 5 may be integrally formed from the same material.

[0025] (Structure of the base peripheral wall) 6, 9, and 10, the base peripheral wall portion 3 has a cylindrical shape and includes a pair of opposing openings, a first opening O1 and a second opening O2, and a flat outer surface 30 and an inner surface 31 extending along the axial direction. The region of the base peripheral wall portion 3 surrounding the first opening O1 is a distal end portion 32, and the end opposite the distal end portion 32 and connected to the base side wall portion 4 is a proximal end portion 33. The second opening O2 of the base peripheral wall portion 3 is closed by the base side wall portion 4. In the present disclosure, the distal end portion 32 of the base peripheral wall portion 3 may be referred to as the "first distal end portion." The axial direction refers to the direction from the first opening O1 toward the second opening O2 (base side wall portion 4) in the base peripheral wall portion 3.

[0026] The external shape of the base peripheral wall portion 3 as viewed in the axial direction is, for example, a square. In this embodiment, the external shape of the base peripheral wall portion 3 as viewed in the axial direction is a rectangle with rounded corners. When viewed in the axial direction, the base peripheral wall portion 3 includes a first portion 34 and a second portion 35 that face each other, as well as a third portion 36 and a fourth portion 37 that face each other. The waterproof case 100 is used with the first portion 34 of the base peripheral wall portion 3 facing upward in the vertical direction. In other words, when the waterproof case 100 is in use, the first portion 34 of the base peripheral wall portion 3 forms the upper surface, and the second portion 35 forms the horizontal lower surface.

[0027] The second portion 35, the third portion 36, and the fourth portion 37 of the base peripheral wall 3 protrude from the base side wall 4 so that the outer surface 30 and the inner surface 31 are perpendicular to the inner surface 42 of the base side wall 4. In contrast, the first portion 34 of the base peripheral wall 3 protrudes from the base side wall 4 so that the outer surface 30 and the inner surface 31 are inclined relative to the inner surface 42 of the base side wall 4.

[0028] 4 , in the first portion 34, the tip end 32 is in contact with or close to the inner surface 81 of the cover peripheral wall 8 facing the outer surface 30 of the first portion 34, while the base end 33 is spaced apart from the inner surface 81 of the cover peripheral wall 8. The first portion 34 is inclined in a direction away from the cover peripheral wall 8 as it extends from the tip end 32 toward the base side wall 4. That is, the first portion 34 is inclined in a direction approaching a horizontal plane P1 perpendicular to the inner surface 42 of the base side wall 4 as it extends from the tip end 32 toward the base side wall 4. As a result, the outer surface 30 of the first portion 34 is inclined in a direction away from the cover peripheral wall 8 and in a direction approaching the horizontal plane P1 as it extends from the tip end 32 toward the base side wall 4, over the entire area extending from the tip end 32 toward the base side wall 4.

[0029] The outer surface 30 of the first part 34 does not necessarily have to be inclined over the entire area extending from the tip end 32 toward the base side wall 4. A portion of the outer surface 30 of the first part 34 close to the tip end 32 may be in contact with the inner surface 81 of the cover peripheral wall 8. It is sufficient that at least a portion of the outer surface 30 of the first part 34 close to the base side wall 4 of the entire area extending from the tip end 32 toward the base side wall 4 is inclined in a direction away from the cover peripheral wall 8 and in a direction approaching the horizontal plane P1 as it moves from the tip end 32 toward the base side wall 4.

[0030] The inner surface 31 of the first portion 34 does not necessarily have to be inclined with respect to the inner surface 42 of the base sidewall portion 4. In other words, the inner surface 31 of the first portion 34 may be perpendicular to the inner surface 42 of the base sidewall portion 4 as long as at least a portion of the outer surface 30 of the first portion 34 that is close to the base sidewall portion 4 is inclined with respect to the inner surface 42 of the base sidewall portion 4.

[0031] 6 and 9, the base peripheral wall 3 is provided with a nut attachment portion 6 for attaching a nut 12 to the base peripheral wall 3. The nut attachment portion 6 protrudes from the inner surface 31 of the base peripheral wall 3 toward the housing space 10 of the base 1. The nut attachment portion 6 includes a first housing portion 60 having a large width and a second housing portion 61 having a small width. The first housing portion 60 has a first space 62 for housing the nut 12, and the second housing portion 61 has a second space 63 for housing the tip end of the threaded portion of the screw 11. Also, with reference to FIGS. 7 and 9, the base peripheral wall 3 has a first screw insertion hole 38 formed in the portion where the nut attachment portion 6 is provided. The first screw insertion hole 38 is a hole for passing the threaded portion of the screw 11 through the base peripheral wall 3 and is a through-hole that penetrates the base peripheral wall 3 in the thickness direction. The diameter of the first screw insertion hole 38 is smaller than the diameter of the head of the screw 11. In this embodiment, the nut attachment portion 6 and the first screw insertion hole 38 are provided in the second portion 35 of the base peripheral wall portion 3. The nut attachment portion 6 and the first screw insertion hole 38 may be located in another portion of the base peripheral wall portion 3, not in the second portion 35.

[0032] After the nut 12 is accommodated in the first space 62 of the nut attachment portion 6, the cover 2 is attached to the base 1, and the screw 11 is screwed into the nut 12 through the first screw insertion hole 38. This fixes the cover 2 to the base 1.

[0033] (Base side wall structure) 9 and 10, the base sidewall 4 has a plate-like shape with two flat main surfaces, an outer surface 41 and an inner surface 42. Referring to FIG. 6, the base sidewall 4 has a rectangular shape when viewed from its main surface. In this embodiment, the base sidewall 4 has a rectangular shape with rounded corners when viewed from its main surface. The base sidewall 4 includes a first side 43 and a second side 44 that face each other, as well as a third side 45 and a fourth side 46 that face each other. The waterproof case 100 is used with the first side 43 of the base sidewall 4 facing upward in the vertical direction. In other words, when the waterproof case 100 is in use, the first side 43 of the base sidewall 4 is the horizontal upper side, and the second side 44 is the horizontal lower side. The base sidewall 4 is formed slightly larger than the base peripheral wall 3 when viewed from its main surface. The outer peripheral edge of the base side wall 4 is located around the base peripheral wall 3, and the base side wall 4 protrudes from the base peripheral wall 3 along the entire circumference of the base peripheral wall 3. The covering wall 5 is provided along the outer peripheral edge of the base side wall 4.

[0034] 2, 3, 6, and 9, at least one first drainage port 40 is formed in the base sidewall 4. The first drainage port 40 is a through-hole that penetrates the base sidewall 4 in the thickness direction. The first drainage port 40 may be formed, for example, as an elongated hole whose horizontal width is longer than its vertical width. In this embodiment, three first drainage ports 40 are formed in the base sidewall 4 at equal intervals in the direction from the third side 45 toward the fourth side 46. The first drainage port 40 is formed in the base sidewall 4 at a position corresponding to the first portion 34 of the base peripheral wall 3. In other words, the first drainage port 40 is adjacent to the first portion 34 of the base peripheral wall 3 and is connected to the first portion 34 of the base peripheral wall 3 so that liquid can flow from the outer surface 30 of the first portion 34 to the first drainage port 40. In this embodiment, the first drainage outlet 40 is formed between the first edge 43 of the base side wall portion 4 and the first part 34 of the base peripheral wall portion 3, and the lower edge of the hole edge of the first drainage outlet 40 along the first part 34 is connected to the outer surface 30 of the first part 34.

[0035] When first drainage outlet 40 is an elongated hole whose width is longer than its height, rainwater that has seeped into the gap between base peripheral wall portion 3 and cover peripheral wall portion 8 can be more easily discharged from first drainage outlet 40 to the outside of waterproof case 100. Furthermore, rather than first drainage outlet 40 being a first elongated hole whose length extends from third side 45 to fourth side 46, the strength of base side wall portion 4 can be improved by forming second elongated holes that are shorter than the first elongated holes and arranging multiple second elongated holes at equal intervals.

[0036] 1 to 3 and 6 , the base sidewall 4 is provided with at least one fixing portion 7 for fixing the waterproof case 100 to an object on which the waterproof case 100 is to be installed. In this embodiment, four fixing portions 7 are provided on the base sidewall 4. The waterproof case 100 is fixed to the object on which the waterproof case 100 is to be installed using, for example, screws and cylindrical spacers so that the outer surface 41 of the base sidewall 4 does not come into contact with the object on which the waterproof case 100 is to be installed. The fixing portion 7 is formed as a plate-like body protruding from the end face of the outer periphery of the base sidewall 4, and a second screw insertion hole 70, which is a through-hole that penetrates the fixing portion 7 in the thickness direction, is formed in the fixing portion 7. A cylindrical spacer is disposed between the surface of the object on which the waterproof case 100 is to be installed and the second screw insertion hole 70 of the fixing portion 7 and the hole of the cylindrical spacer overlap. Then, the waterproof case 100 is fixed to the object on which the waterproof case 100 is to be installed by screwing a screw into the object through the second screw insertion hole 70 of the fixing portion 7 and the hole of the cylindrical spacer. In this embodiment, two fixing portions 7 are provided on each of the third side 45 and the fourth side 46 of the outer peripheral edge of the base side wall portion 4, but the position of the fixing portions 7 may be any part of the outer peripheral edge of the base side wall portion 4.

[0037] (Covered wall structure) 9 and 10, the covering wall 5 has a flat outer surface 51 and an inner surface 52, and the outer surface 51 and the inner surface 52 protrude from the base side wall 4 so as to be perpendicular to the inner surface 42 of the base side wall 4. Referring to FIG. 6, the covering wall 5 is provided on the base side wall 4 so as to surround at least a portion of the base peripheral wall 3. In this embodiment, the covering wall 5 is provided on the base side wall 4 so as to surround the first portion 34, the third portion 36, and the fourth portion 37 of the base peripheral wall 3, excluding the second portion 35 that forms the underside of the waterproof case 100 when in use. Referring to FIGS. 4 and 5, the tip portion 82 of the cover peripheral wall 8 is fitted into the covering wall 5. The tip portion 82 of the cover peripheral wall 8 is inserted into the gap 50 between the base peripheral wall 3 and the covering wall 5. The covering wall 5 covers the boundary between the tip portion 82 of the cover peripheral wall 8 and the base side wall 4. Since the boundary between the tip 82 of the cover peripheral wall 8 and the base side wall 4 is covered by the covering wall 5, rainwater falling on the cover 2 when the waterproof case 100 is in use is less likely to seep into the gap between the cover peripheral wall 8 and the base peripheral wall 3 from the tip 82 of the cover peripheral wall 8.

[0038] There are no particular limitations on the position where the cover wall 5 is provided on the base side wall 4. However, if the cover wall 5 is provided on the base side wall 4 so as to surround at least the first portion 34, the third portion 36, and the fourth portion 37 of the base peripheral wall 3, rainwater is less likely to penetrate into the gap between the cover peripheral wall 8 and the base peripheral wall 3.

[0039] (Cover structure) Fig. 11 is a perspective view of the cover 2. Fig. 12 is a cross-sectional view of the cover 2.

[0040] 11 and 12, cover 2 includes a cylindrical cover peripheral wall portion 8 and a plate-shaped cover side wall portion 9. Cover peripheral wall portion 8 and cover side wall portion 9 may be integrally formed from the same material.

[0041] (Structure of the cover peripheral wall) 11 and 12, the cover peripheral wall portion 8 has a cylindrical shape and includes a pair of opposing openings, a third opening O3 and a fourth opening O4, and a flat outer surface 80 and an inner surface 81 extending along the axial direction. The area of ​​the cover peripheral wall portion 8 surrounding the third opening O3 is a distal end portion 82, and the end opposite the distal end portion 82 and connected to the cover side wall portion 9 is a proximal end portion 83. The fourth opening O4 of the cover peripheral wall portion 8 is closed by the cover side wall portion 9. With reference to FIGS. 4 and 5, at least a portion of the base peripheral wall portion 3 extending from the third opening O3 is fitted into the cover peripheral wall portion 8. In this embodiment, the entire base peripheral wall portion 3 is fitted into the cover peripheral wall portion 8. In this disclosure, the distal end portion 82 of the cover peripheral wall portion 8 may be referred to as a "second distal end portion." The axial direction refers to the direction from the third opening O3 toward the fourth opening O4 (cover side wall portion 9) in the cover peripheral wall portion 8.

[0042] The cover peripheral wall 8 protrudes from the cover side wall 9 so that an outer surface 80 and an inner surface 81 are perpendicular to the inner surface 91 of the cover side wall 9. Referring to FIGS. 4 and 5 , when the cover 2 is attached to the base 1, a tip end 82 of the cover peripheral wall 8 abuts against the inner surface 42 of the base side wall 4. The length by which the cover peripheral wall 8 protrudes from the cover side wall 9 is greater than the length by which the base peripheral wall 3 protrudes from the base side wall 4. Therefore, the cover peripheral wall 8 includes a surrounding portion 84 that surrounds the base peripheral wall 3 and a protruding portion 85 that protrudes from the base peripheral wall 3. The surrounding portion 84 is a portion of the cover peripheral wall 8 close to the tip end 82, and the protruding portion 85 is a portion of the cover peripheral wall 8 close to the base end 83.

[0043] 11 , the outer shape of the cover peripheral wall portion 8 as viewed in the axial direction is, for example, a square. In this embodiment, the outer shape of the cover peripheral wall portion 8 as viewed in the axial direction is a rectangle with rounded corners. When viewed in the axial direction, the cover peripheral wall portion 8 includes a first portion 86 and a second portion 87 that face each other, as well as a third portion 88 and a fourth portion 89 that face each other. The waterproof case 100 is used with the first portion 86 of the cover peripheral wall portion 8 facing upward in the vertical direction. In other words, when the waterproof case 100 is in use, the first portion 86 of the cover peripheral wall portion 8 forms a horizontal upper surface, and the second portion 87 forms a horizontal lower surface.

[0044] 11 and 12 , a second drainage port 92 is formed in the cover peripheral wall 8 in a portion covering the second portion 35 opposing the first portion 34 of the base peripheral wall 3. In this embodiment, the second portion 87 of the cover peripheral wall 8 is the portion covering the second portion 35 of the base peripheral wall 3, and therefore the second drainage port 92 is formed in the second portion 87 of the cover peripheral wall 8.

[0045] The second drainage opening 92 is a through-hole that penetrates the cover peripheral wall 8 in the thickness direction. The second drainage opening 92 is formed in the second portion 87 of the cover peripheral wall 8 at or near the leading end 82 of the cover peripheral wall 8. A position near the leading end 82 of the cover peripheral wall 8 refers to, for example, the shorter of a range within 15 mm from the leading edge of the cover peripheral wall 8 and a range within one-third of the length of the base peripheral wall 3 protruding from the base side wall 4. In this embodiment, the second drainage opening 92 is formed by cutting out a recess in the leading end 82 of the cover peripheral wall 8. The second drainage opening 92 may be formed, for example, as an elongated hole whose width is longer than its height. If the second drainage opening 92 is an elongated hole whose width is longer than its height, rainwater that has seeped into the gap between the base peripheral wall 3 and the cover peripheral wall 8 can be more easily discharged to the outside of the waterproof case 100 via the second drainage opening 92. The position where the second drainage outlet 92 is formed in the second portion 87 of the cover peripheral wall 8 is not limited to the tip end 82 of the cover peripheral wall 8 or a position close to the tip end 82. The position where the second drainage outlet 92 is formed is not particularly limited as long as it can discharge rainwater that has entered the gap between the base peripheral wall 3 and the cover peripheral wall 8 to the outside of the waterproof case 100.

[0046] 11 and 12 , a third screw insertion hole 93 is formed in the cover peripheral wall portion 8 at a position corresponding to the position where the first screw insertion hole 38 is formed in the base peripheral wall portion 3. In this embodiment, the first screw insertion hole 38 is formed in the second portion 35 of the base peripheral wall portion 3, and therefore the third screw insertion hole 93 is formed in the second portion 87 of the cover peripheral wall portion 8. The third screw insertion hole 93 may be formed as an elongated hole whose vertical width is longer than its horizontal width, for example. The horizontal width of the third screw insertion hole 93 is smaller than the diameter of the head of the screw 11 and larger than the diameter of the threaded portion of the screw 11. When the cover 2 is attached to the base 1, the first screw insertion hole 38 in the base peripheral wall portion 3 and the third screw insertion hole 93 in the cover peripheral wall portion 8 overlap. This allows the screw 11 to pass through the third screw insertion hole 93 and the first screw insertion hole 38 and be screwed into the nut 12 accommodated in the first space 62 of the nut attachment portion 6.

[0047] (Cover side wall structure) 11 and 12, the cover side wall portion 9 is plate-shaped and has two flat main surfaces, an outer surface 90 and an inner surface 91. The outer shape of the cover side wall portion 9 as viewed from the main surface is, for example, a quadrangle. In this embodiment, the outer shape of the cover side wall portion 9 as viewed from the main surface is a rectangle with rounded corners.

[0048] (Effects of the First Embodiment) Next, the effects of the waterproof case 100 according to the first embodiment will be described. Referring to FIG. 4 , when rainwater falls on the cover 2 while the waterproof case 100 according to the first embodiment is in use, some of the rainwater seeps into the gap between the cover peripheral wall 8 and the base peripheral wall 3 from the tip 82 of the cover peripheral wall 8 in the first portion 86 of the cover peripheral wall 8, which forms the upper surface when the waterproof case 100 is in use. The rainwater that seeps into the gap between the cover peripheral wall 8 and the base peripheral wall 3 is guided along the slope of the outer surface 30 of the first portion 34, which forms the upper surface of the base peripheral wall 3, to the base sidewall 4 on the opposite side from the tip 32. Therefore, rather than infiltrating from the tip 32 into the storage space 10 of the base 1, the rainwater is more likely to be guided to the base sidewall 4 and discharged to the outside of the waterproof case 100 through the first drainage opening 40 formed in the base sidewall 4. Therefore, the waterproof case 100 according to the first embodiment can prevent rainwater from seeping into the storage space 10 for the electronic device. Furthermore, the waterproof case 100 of embodiment 1 has a structure in which rainwater is discharged to the outside of the waterproof case 100 by the inclination of the outer surface 30 of the first part 34 in the base peripheral wall portion 3 and the first drainage outlet 40 in the base side wall portion 4, and therefore can achieve waterproofing function with a simple structure.

[0049] Rainwater that seeps into the gap between the cover peripheral wall 8 and the base peripheral wall 3 is guided to the base side wall 4 along the slope of the outer surface 30 of the first portion 34. Furthermore, rainwater that seeps into the gap between the cover peripheral wall 8 and the base peripheral wall 3 flows left and right along the outer surface 30 of the first portion 34 when viewed in the axial direction of the base peripheral wall 3, toward the third portion 36 and the fourth portion 37. The rainwater then flows down toward the second portion 35, which forms the underside of the waterproof case 100 when in use. In the waterproof case 100 according to the first embodiment, a second drainage opening 92 is formed in the second portion 87 of the cover peripheral wall 8, which covers the second portion 35 of the base peripheral wall 3. This allows rainwater that flows down toward the second portion 35 of the base peripheral wall 3 to be discharged from the second drainage opening 92 to the outside of the waterproof case 100.

[0050] (Embodiment 2) Next, a waterproof case 100 according to a second embodiment will be described. The waterproof case 100 according to the second embodiment basically has the same structure as the waterproof case 100 according to the first embodiment, and achieves the same effects. However, in the second embodiment, the structure of the cover peripheral wall portion 8 is different from that of the first embodiment. Below, the differences from the first embodiment will be mainly described.

[0051] Fig. 13 is an exploded perspective view of the waterproof case 100 according to embodiment 2. Figs. 14 and 15 are cross-sectional views of the waterproof case 100 according to embodiment 2.

[0052] 13, the waterproof case 100 according to the second embodiment includes a base 1 and a cover 2. The cover 2 is attached to the base 1 and fixed to the base 1 by screws 11 and nuts 12, for example.

[0053] The cover 2 includes a cylindrical cover peripheral wall portion 8 and a plate-like cover side wall portion 9. With reference to Figures 13 to 15, the cover peripheral wall portion 8 includes, when viewed in the axial direction, opposing first and second portions 86 and 87, as well as opposing third and fourth portions 88 and 89. The cover peripheral wall portion 8 also includes a surrounding portion 84 that is close to the tip end portion 82 and surrounds the base peripheral wall portion 3, and a protruding portion 85 that is close to the base end portion 83 and protrudes from the base peripheral wall portion 3.

[0054] The surrounding portion 84 protrudes from the cover side wall 9 so that its outer surface 80 and inner surface 81 are perpendicular to the inner surface 91 of the cover side wall 9. In contrast, the protruding portion 85 is connected to the surrounding portion 84 so that at least its outer surface 80 is inclined relative to the inner surface 91 of the cover side wall 9. In the first portion 86 and the second portion 87 of the cover peripheral wall 8, the outer surface 80 of the protruding portion 85 is inclined in a direction approaching a horizontal plane P1 perpendicular to the inner surface 91 of the cover side wall 9 as it moves from the boundary between the surrounding portion 84 and the protruding portion 85 toward the cover side wall 9. In the third portion 88 and the fourth portion 89 of the cover peripheral wall 8, the outer surface 80 of the protruding portion 85 is inclined in a direction approaching a vertical plane P2 perpendicular to the inner surface 91 of the cover side wall 9 as it moves from the boundary between the surrounding portion 84 and the protruding portion 85 toward the cover side wall 9. In other words, the outer surface 80 of the protrusion 85 is tapered toward the cover side wall portion 9, and is an inclined surface 80A that slopes so that the outer shape in a cross section perpendicular to the axial direction of the cover peripheral wall portion 8 becomes smaller.

[0055] The inner surface 81 of the protrusion 85 may be inclined with respect to the inner surface 91 of the cover side wall 9, like the outer surface 80, as in this embodiment, or may be perpendicular to the inner surface 91 of the cover side wall 9.

[0056] (Effects unique to the second embodiment) 14 and 15 , when rainwater falls on the cover 2 during use of the waterproof case 100 according to the second embodiment, some of the rainwater is guided along the inclination of the inclined surface 80A that forms the outer surface 80 of the protrusion 85 on the cover peripheral wall 8 to the cover side wall 9 on the side opposite to the tip 82. This reduces the amount of rainwater that falls on the cover 2 and reaches the tip 82 of the cover peripheral wall 8 and seeps into the gap between the cover peripheral wall 8 and the base peripheral wall 3. As a result, the waterproof case 100 according to the second embodiment can prevent rainwater from seeping into the storage space 10 for the electronic device.

[0057] (Embodiment 3) Next, a waterproof case 100 according to a third embodiment will be described. The waterproof case 100 according to the third embodiment basically has the same structure as the waterproof case 100 according to the first embodiment, and achieves the same effects. However, in the third embodiment, the structure of the base 1 and the cover 2 is partially different from that of the first embodiment. Below, the differences from the first embodiment will be mainly described.

[0058] FIG. 16 is an exploded perspective view of the water protective case 100 according to the third embodiment.

[0059] 16, a waterproof case 100 according to the third embodiment includes a base 1 and a cover 2. The cover 2 is attached to the base 1 and fixed to the base 1 by screws 11 and nuts 12, for example.

[0060] Fig. 17 is a front view of the base 1. Fig. 18 is a side view of the base 1. Fig. 19 is a cross-sectional view of the base 1.

[0061] 17 to 19, the base 1 includes a cylindrical base peripheral wall portion 3, a plate-like base side wall portion 4, and a covering wall portion 5 arranged around the base peripheral wall portion 3. The structure of the base 1 differs from that of the first embodiment in the shape of the first portion 34 of the base peripheral wall portion 3, the shape of the first side 43 of the base side wall portion 4, and the shape of the first portion 53 of the covering wall portion 5. The first portion 53 of the covering wall portion 5 is a portion of the covering wall portion 5 that is provided along the first side 43 of the base side wall portion 4 and faces the first portion 34 of the base peripheral wall portion 3.

[0062] 16, 17, and 19, the first part 34 of the base peripheral wall 3 is bent or curved so as to be convex toward the first part 86 of the cover peripheral wall 8 on the opposite side to the accommodation space 10, as viewed in the axial direction of the base peripheral wall 3. As a result, the outer surface 30 of the first part 34 is bent or curved so as to be convex toward the first part 86 of the cover peripheral wall 8 on the opposite side to the accommodation space 10, as viewed in the axial direction of the base peripheral wall 3. In this embodiment, the outer surface 30 of the first part 34 is a smoothly curved surface, but it may also be a curved surface with a pointed apex.

[0063] The first edge 43 of the base side wall portion 4 and the first part 53 of the covering wall portion 5 are also bent or curved in the same direction as the first part 34 of the base peripheral wall portion 3, that is, when viewed in the axial direction of the base peripheral wall portion 3, so as to be convex in the opposite direction to the first part 34 of the base peripheral wall portion 3.

[0064] Fig. 20 is a perspective view of the cover 2. Fig. 21 is a cross-sectional view of the cover 2.

[0065] 20 and 21 , the cover 2 includes a cylindrical cover peripheral wall portion 8 and a plate-shaped cover side wall portion 9. The structure of the cover 2 differs from that of the first embodiment in the shape of a first portion 86 of the cover peripheral wall portion 8 and the shape of a first side 95 of the cover side wall portion 9 along which the first portion 86 of the cover peripheral wall portion 8 runs.

[0066] 16, 20, and 21, the first part 86 of the cover peripheral wall part 8 is bent or curved so as to convex in the opposite direction to the first part 34 of the base peripheral wall part 3, when viewed in the axial direction of the cover peripheral wall part 8. As a result, the outer surface 80 of the first part 86 is bent or curved so as to convex in the opposite direction to the first part 34, when viewed in the axial direction of the cover peripheral wall part 8. In this embodiment, the outer surface 80 of the first part 86 is a smoothly curved surface, but it may also be a curved surface with a pointed apex.

[0067] The first edge 95 of the cover side wall portion 9 is also bent or curved in the same direction as the first part 86 of the cover peripheral wall portion 8, that is, when viewed in the axial direction of the cover peripheral wall portion 8, so as to be convex in the opposite direction to the first part 34 of the base peripheral wall portion 3.

[0068] (Effects unique to the third embodiment) In the waterproof case 100 according to the third embodiment, the outer surface 80 of the first portion 86, which forms the upper surface of the cover peripheral wall 8, is bent or curved upward in a convex shape when viewed in the axial direction of the cover peripheral wall 8. This makes it easier for rainwater that falls on the cover 2 while the waterproof case 100 is in use to flow left and right along the outer surface 80 of the first portion 86. As a result, the amount of rainwater that falls on the cover flows toward the tip portion 82 of the cover peripheral wall 8 and seeps from the tip portion 82 into the gap between the cover peripheral wall 8 and the base peripheral wall 3 can be reduced.

[0069] In the waterproof case 100 according to the third embodiment, the outer surface 30 of the first portion 34, which forms the upper surface of the base peripheral wall 3, is bent or curved upward in a convex manner when viewed in the axial direction of the base peripheral wall 3. This makes it easier for rainwater that has seeped into the gap between the cover peripheral wall 8 and the base peripheral wall 3 from the tip 82 of the cover peripheral wall 8 to flow left and right along the outer surface 30 of the first portion 34 of the base peripheral wall 3 and then down toward the second portion 35.

[0070] (Embodiment 4) Next, a waterproof case 100 according to a fourth embodiment will be described. The waterproof case 100 according to the fourth embodiment basically has the same structure as the waterproof case 100 according to the third embodiment, and achieves the same effects. However, in the fourth embodiment, the structure of the cover peripheral wall portion 8 differs from that of the third embodiment. Below, the differences from the third embodiment will be mainly described.

[0071] Fig. 22 is an exploded perspective view of the waterproof case 100 according to embodiment 4. Figs. 23 and 24 are cross-sectional views of the waterproof case 100 according to embodiment 4.

[0072] 22, the waterproof case 100 according to the fourth embodiment includes a base 1 and a cover 2. The cover 2 is attached to the base 1 and fixed to the base 1 by screws 11 and nuts 12, for example.

[0073] The cover 2 includes a cylindrical cover peripheral wall portion 8 and a plate-like cover side wall portion 9. With reference to Figures 22 to 24, the cover peripheral wall portion 8 includes, when viewed in the axial direction, opposing first and second portions 86 and 87, as well as opposing third and fourth portions 88 and 89. The cover peripheral wall portion 8 also includes a surrounding portion 84 that is close to the tip end portion 82 and surrounds the base peripheral wall portion 3, and a protruding portion 85 that is close to the base end portion 83 and protrudes from the base peripheral wall portion 3.

[0074] The surrounding portion 84 protrudes from the cover side wall 9 so that its outer surface 80 and inner surface 81 are perpendicular to the inner surface 91 of the cover side wall 9. In contrast, the protruding portion 85 is connected to the surrounding portion 84 so that at least its outer surface 80 is inclined with respect to the inner surface 91 of the cover side wall 9. In the first portion 86 and the second portion 87 of the cover peripheral wall 8, the outer surface 80 of the protruding portion 85 is inclined in a direction approaching a horizontal plane P1 perpendicular to the inner surface 91 of the cover side wall 9 as it moves from the boundary between the surrounding portion 84 and the protruding portion 85 toward the cover side wall 9. In the third portion 88 and the fourth portion 89 of the cover peripheral wall 8, the outer surface 80 of the protruding portion 85 is inclined in a direction approaching a vertical plane P2 perpendicular to the inner surface 91 of the cover side wall 9 as it moves from the boundary between the surrounding portion 84 and the protruding portion 85 toward the cover side wall 9. In other words, the outer surface 80 of the protrusion 85 is tapered toward the cover side wall portion 9, and is an inclined surface 80A that slopes so that the outer shape in a cross section perpendicular to the axial direction of the cover peripheral wall portion 8 becomes smaller.

[0075] The inner surface 81 of the protrusion 85 may be inclined with respect to the inner surface 91 of the cover side wall 9, like the outer surface 80, as in this embodiment, or may be perpendicular to the inner surface 91 of the cover side wall 9.

[0076] (Effects unique to the fourth embodiment) 23 and 24 , when rainwater falls on the cover 2 during use of the waterproof case 100 according to the fourth embodiment, some of the rainwater is guided along the inclination of the inclined surface 80A that forms the outer surface 80 of the protrusion 85 on the cover peripheral wall 8 to the cover side wall 9 on the side opposite to the tip 82. This reduces the amount of rainwater that falls on the cover 2 and reaches the tip 82 of the cover peripheral wall 8 and seeps into the gap between the cover peripheral wall 8 and the base peripheral wall 3. As a result, the waterproof case 100 according to the fourth embodiment can prevent rainwater from seeping into the storage space 10 for the electronic device.

[0077] (Embodiment 5) Next, a waterproof case 100 according to a fifth embodiment will be described. The waterproof case 100 according to the fifth embodiment basically has the same structure as the waterproof case 100 according to the first embodiment, and achieves the same effects. However, the fifth embodiment differs from the first embodiment in that a protrusion 94 is provided on the cover peripheral wall 8. The following mainly describes the differences from the first embodiment.

[0078] 25 and 26 are cross-sectional views of the water protective case 100 according to the fifth embodiment.

[0079] 25 and 26, in the fifth embodiment, a protrusion 94 is provided on the cover peripheral wall 8. The protrusion 94 protrudes from the outer surface 80 of the cover peripheral wall 8. The protrusion 94 is formed on the cover peripheral wall 8 so that when the tip end 82 of the cover peripheral wall 8 is inserted between the base peripheral wall 3 and the covering wall 5, the protrusion 94 abuts against the tip end of the covering wall 5. The tip end of the covering wall 5 is the end of the covering wall 5 opposite the end connected to the base side wall 4.

[0080] (Effects unique to the fifth embodiment) 25 and 26, in the waterproof case 100 according to the fifth embodiment, the gap between the covering wall 5 and the cover peripheral wall 8 is blocked by a protrusion 94. This makes it difficult for rainwater falling on the cover 2 when the waterproof case 100 is in use to reach the tip 82 of the cover peripheral wall 8. As a result, the amount of rainwater falling on the cover 2 that reaches the tip 82 of the cover peripheral wall 8 and seeps from the tip 82 into the gap between the cover peripheral wall 8 and the base peripheral wall 3 can be reduced.

[0081] (Modification of the fifth embodiment) The waterproof cases 100 according to the second to fourth embodiments may also be provided with protrusions 94 on the cover peripheral wall portion 8.

[0082] (Embodiment 6) Next, a waterproof case 100 according to a sixth embodiment will be described. The waterproof case 100 according to the sixth embodiment basically has the same structure as the waterproof case 100 according to the first embodiment, and achieves the same effects. However, the sixth embodiment differs from the first embodiment in that a cable guide portion 13 is provided on the base 1. The following mainly describes the differences from the first embodiment.

[0083] Fig. 27 is an exploded perspective view of a waterproof case 100 according to a sixth embodiment. Referring to Fig. 27, in the sixth embodiment, a cable guide portion 13 is provided on the base 1. The cable guide portion 13 protrudes from the inner surface 31 of the second portion 35 of the base peripheral wall portion 3 toward the housing space 10. A cable connected to an electronic device housed in the housing space 10 of the base 1 is passed through the cable guide portion 13. In this embodiment, the cable guide portion 13 is formed by a pair of parallel plate-like bodies, and the cable is passed between the pair of plate-like bodies. Note that the cable guide portion 13 may also be a cylindrical body or the like through which a cable can be passed.

[0084] A through hole 39 for passing a cable is formed in the second part 35 of the base peripheral wall part 3. The cable guide part 13 protrudes along the edge of the through hole 39 toward the housing space 10 of the base 1, and the through hole 39 communicates with the space of the cable guide part 13 through which the cable passes.

[0085] (Effects unique to the sixth embodiment) Referring to Figure 27, according to the waterproof case 100 of embodiment 6, when a cable connected to an electronic device housed in the waterproof case 100 is brought out of the waterproof case 100, it is possible to prevent rainwater from entering the housing space 10 of the base 1 through the through hole 39 for passing the cable.

[0086] (Modification of the sixth embodiment) Fig. 28 is a front view of a modified example of the base 1 in the waterproof case 100 according to the sixth embodiment. Referring to Fig. 28, in the waterproof case 100 according to the sixth embodiment, a hook 14 may be provided on the base side wall 4. The hook 14 is provided on the base side wall 4 in order to secure the cable that has been pulled out to the outside of the waterproof case 100 with, for example, a cable tie. The hook 14 is formed of a plate-like body that protrudes from the end face of the second side 44 of the base side wall 4 at a portion corresponding to the cable guide portion 13.

[0087] In the waterproof cases 100 according to the second to fifth embodiments, the cable guide portion 13 and the hook 14 can also be provided on the base 1.

[0088] (Embodiment 7) Next, a waterproof case 100 according to a seventh embodiment will be described. The waterproof case 100 according to the seventh embodiment basically has the same structure as the waterproof case 100 according to the first embodiment, and achieves the same effects. However, the seventh embodiment differs from the first embodiment in that the screws 11 and nuts 12 are not used as the fixing structure for fixing the cover 2 to the base 1. The following mainly describes the differences from the first embodiment.

[0089] Fig. 29 is a perspective view of the waterproof case 100 according to the seventh embodiment. Fig. 30 is a cross-sectional view of the waterproof case 100 according to the seventh embodiment.

[0090] 29 and 30, a waterproof case 100 according to a seventh embodiment includes a base 1 and a cover 2. The base 1 includes a cylindrical base peripheral wall 3, a plate-like base side wall 4, and a covering wall 5 arranged around the base peripheral wall 3. In the seventh embodiment, the base peripheral wall 3 is not provided with a nut mounting portion 6, and the base peripheral wall 3 is not formed with a first screw insertion hole 38. In contrast, a pair of claws 15 is provided on the covering wall 5. The pair of claws 15 are formed of plate-like bodies protruding from the end face of the tip of the covering wall 5. A concave groove 150 is formed on the inner surface of each of the claws 15.

[0091] The cover 2 includes a cylindrical cover peripheral wall 8 and a plate-shaped cover side wall 9. In the seventh embodiment, the cover peripheral wall 8 does not have a third screw insertion hole 93. Instead, the cover peripheral wall 8 is provided with a pair of connecting portions 16 that hook onto a pair of claws 15 of the base 1 to connect the base 1 and the cover 2. In this embodiment, the connecting portions 16 are protrusions that protrude from the outer surface 80 of the cover peripheral wall 8. The protrusions that form the connecting portions 16 are formed on the cover peripheral wall 8 so as to fit into the recessed grooves 150 of the claws 15 when the tip portions 82 of the cover peripheral wall 8 are inserted between the base peripheral wall 3 and the cover wall 5.

[0092] (Effects unique to the seventh embodiment) According to the waterproof case 100 of the seventh embodiment, the cover 2 can be easily fixed to the base 1.

[0093] (Modification of the seventh embodiment) In the waterproof case 100 according to the second to sixth embodiments, the fixing structure for fixing the cover 2 to the base 1 can also use the claws 15 and the connecting portions 16 instead of the screws 11 and nuts 12 .

[0094] The fixing structure for fixing the cover 2 to the base 1 is not limited to the pair of claws 15 and the pair of connecting portions 16, and various structures can be used as long as the cover 2 can be connected to the base 1 so as not to separate from it.

[0095] (Other variations) In the embodiment described above, the outer shape of the waterproof case 100 when viewed from the axial direction of the base peripheral wall portion 3 and the cover peripheral wall portion 8 is rectangular, but the outer shape may also be circular, elliptical, or other polygonal shapes.

[0096] It should be understood that the embodiments disclosed herein are illustrative in all respects and are not limiting in any respect. The scope of the present invention is defined not by the above description but by the claims, and it is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0097] 1 base 2 Cover 3 Base peripheral wall 4 Base side wall 5 Covered wall 6 Nut mounting part 7 Fixed part 8 Cover peripheral wall 9 Cover side wall 10 Containment Space 11 screws 12 nuts 13 Cable guide 14 Hook 15 Nails 16 Connecting part 30 outer surface of base peripheral wall 31 Inner surface of base peripheral wall 32 Tip of base peripheral wall 33 Base end portion of base peripheral wall portion 34 First portion of base peripheral wall 35 Second portion of base peripheral wall 36 Third portion of base peripheral wall 37 Fourth part of base peripheral wall 38 First screw insertion hole 39 Through holes 40 First drain 41 Outer surface of base side wall 42 Inner surface of base side wall 43 First side of base side wall 44 Second side of base side wall 45 Third side of base side wall 46 Fourth side of base side wall 50 vacant spaces 51 Outer surface of covered wall 52 Inner surface of covered wall 53 First part of the covering wall 60 First Storage Unit 61 Second storage section 62 First space 63 Second space 70 Second screw insertion hole 80 Outer surface of the cover peripheral wall 80A Inclined surface of the cover peripheral wall 81 Inner surface of the cover peripheral wall 82 Tip of the cover peripheral wall 83 Base end of cover peripheral wall 84 Surrounding portion of cover peripheral wall 85 Protrusion of the cover peripheral wall 86 First part of the cover peripheral wall 87 Second part of the cover peripheral wall 88 Third part of the cover peripheral wall 89 Fourth part of the cover peripheral wall 90 Outer surface of cover side wall 91 Inner surface of cover side wall 92 Second drain 93 Third screw insertion hole 94 Protrusion 95 First side of cover side wall 100 Waterproof Case 101 Waterproof Case Front Page 102 Second side of the waterproof case 150 concave groove O1 First opening in the base peripheral wall O2 Second opening in the base wall O3 Third opening in the cover wall O4 Fourth opening in the cover peripheral wall P1 horizontal plane P2 vertical plane

Claims

1. a base having a storage space for storing electronic equipment; a cover attached to the base so as to close the storage space; Equipped with The base is a cylindrical base peripheral wall portion having a pair of opposing openings, a first opening and a second opening, and a first tip portion that is a region surrounding the first opening; a plate-shaped base side wall portion that closes the second opening of the base peripheral wall portion; Including, The cover is a cylindrical cover peripheral wall portion having a third opening and a fourth opening that are a pair of opposing openings, and a second tip portion that is a region surrounding the third opening; a plate-shaped cover side wall portion that closes the fourth opening of the cover peripheral wall portion; Including, At least a portion of the base peripheral wall portion is fitted into the cover peripheral wall portion through the third opening, In a first portion that is a part of the base peripheral wall portion, at least a portion of an outer surface extending from the first tip portion toward the base side wall portion is inclined in a direction away from the cover peripheral wall portion as it approaches the base side wall portion, The waterproof case has a first drainage port, which is a through-hole, formed in the base side wall at a position corresponding to the first portion.

2. The waterproof case according to claim 1 , wherein a second drainage port, which is a through-hole, is formed in a portion of the cover peripheral wall that covers the second portion, which is a portion that faces the first portion.

3. 3. The waterproof case according to claim 1, wherein the outer surface of the portion is bent or curved so as to be convex toward the cover peripheral wall portion when viewed in the axial direction of the base peripheral wall portion.

4. 3. The waterproof case according to claim 1, wherein an outer surface of the portion of the cover peripheral wall portion that covers the first portion is bent or curved so as to be convex in a direction away from the base peripheral wall portion when viewed in the axial direction of the cover peripheral wall portion.

5. 3. The waterproof case according to claim 1, wherein the outer surface of the cover peripheral wall portion includes at least a portion of an inclined surface that is inclined so that the outer shape of the cover peripheral wall portion in a cross section perpendicular to the axial direction becomes smaller toward the cover side wall portion.

6. the base further includes a covering wall portion provided on the base side wall portion so as to surround at least a portion of the base peripheral wall portion, the second tip portion of the cover peripheral wall portion is fitted into the covering wall portion, 3. The waterproof case according to claim 1, wherein the cover peripheral wall portion is provided with a protrusion that abuts against the covering wall portion.

7. 3. The waterproof case according to claim 2, wherein the second portion has a through hole formed therein for passing a cable connected to the electronic device, and a cable guide portion protruding toward the storage space along an edge of the through hole.

Images