Waterproof structure in case body

Abstract

To provide a waterproof structure in a case body capable of reliably deforming a packing and exhibiting high waterproofness.SOLUTION: In an annular concave part 26 in which a packing 40 is housed, a case protrusion 33 protruding toward the packing 40 is provided so as to extend along an extending direction of the annular concave part 26. Therefore, when the packing 40 is sandwiched between a rear case 12 and a camera-side adjustment member 20 from front and rear sides, the packing 40 is easily deformed and can exhibit high waterproofness.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a waterproof structure for a case body such as a main body case of an electronic device. [Background technology]

[0002] Conventionally, in a case body having a case body with an opening on the front side and a cover body attached to close the front opening, a waterproof structure is provided to prevent water from entering the case body through the front opening of the case body. A well-known waterproof structure is one in which a frame-shaped packing is arranged along the edge of the front opening of the case body, and when the cover body is attached to the case body, the packing is sandwiched between the cover body and the case body from the front and rear (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-252477 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional waterproof structures, the packing sandwiched between the cover body and the case body is difficult to deform sufficiently, and gaps tend to form between the cover body and the case body.

[0005] Therefore, the present invention has been made in consideration of the above problems, and aims to provide a waterproof structure for a case body that can reliably deform the gasket and exhibit high waterproof properties. [Means for solving the problem]

[0006] In order to achieve the above object, the invention described in claim 1 of the present invention is a waterproof structure in a case body comprising a case member having an opening and a cover member attached to cover the opening, with a gasket interposed between the case member and the cover member, characterized in that a convex rib protruding toward the gasket is provided in a predetermined direction at least at either the contact point of the gasket on the case member or the contact point of the gasket on the cover member. According to the invention described in claim 1, a convex rib that protrudes toward the gasket is provided in a predetermined direction at at least one of the contact points of the gasket on the case member and the contact points of the gasket on the cover member, so that the gasket is easily deformed when interposed between the case member and the cover member, and can exhibit high waterproof properties.

[0007] The invention described in claim 2 is characterized in that, in the invention described in claim 1, a recess is provided at the contact point of the case member with the gasket, a hole is drilled within the recess, the gasket is attached so as to cover the recess, and a ridge is provided along the periphery of the recess. According to the invention described in claim 2, a recess is provided at the contact point of the case member with the gasket, and a hole is drilled within the recess, while the gasket is attached so as to cover the recess and a protrusion is provided along the periphery of the recess. This makes it difficult for water to penetrate into the recess and, ultimately, into the inside of the case body through the hole, resulting in a waterproof structure with even higher water resistance.

[0008] The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, a packing ridge is protruded from the surface of the packing, and the packing ridge abuts against the case member or the cover member. According to the invention described in claim 3, a packing ridge is protruded from the surface of the packing and abuts against the case member or the cover member, so that water can be reliably prevented from penetrating inside the packing ridge, and a waterproof structure with extremely high waterproof performance can be achieved. [Effects of the Invention]

[0009] According to the present invention, a protrusion protruding toward the gasket is provided in a predetermined direction at at least one of the contact points of the gasket on the case member and the contact points of the gasket on the cover member, so that the gasket is easily deformed when interposed between the case member and the cover member, thereby achieving high waterproofing. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective explanatory view showing the appearance of a surveillance camera. [Figure 2] FIG. 2 is an explanatory diagram showing the camera device from the rear side. [Figure 3] FIG. 10 is an explanatory diagram showing the camera device from which the camera-side adjustment member has been removed, viewed from the rear side. [Figure 4] 4 is an explanatory diagram showing the camera device from the rear side with the packing further removed from the state shown in FIG. 3. FIG. [Figure 5] FIG. 10 is an explanatory perspective view showing the camera-side adjustment member, the packing, and the case member in an exploded state. [Figure 6] 1A is an explanatory diagram showing the packing, in which FIG. 1A is an explanatory diagram showing the packing from the rear, FIG. 1B is an explanatory diagram showing the packing from the front, and FIG. 1C is an explanatory perspective view of the front side. [Figure 7] 3 is an explanatory diagram showing an enlarged view of a main part of the cross section taken along line AA in FIG. 2. FIG. [Figure 8] 3 is an explanatory diagram showing an enlarged view of a main part of a cross section taken along line BB in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof structure for a body case of a camera device according to an embodiment of the present invention will now be described in detail with reference to the drawings.

[0012] FIG. 1 is a perspective explanatory diagram showing the appearance of a surveillance camera 1. FIG. 2 is an explanatory diagram showing the camera device 2 from the rear side. FIG. 3 is an explanatory diagram showing the camera device 2 from the rear side with the camera side adjustment member 20 removed. FIG. 4 is an explanatory diagram showing the camera device 2 from the rear side with the packing 40 removed from the state of FIG. 3. FIG. 5 is an explanatory perspective explanatory diagram showing the camera side adjustment member 20, the packing 40, and the case member disassembled. FIG. 6 is an explanatory diagram showing the packing 40, where (a) is an explanatory diagram shown from the rear, (b) is an explanatory diagram shown from the front, and (c) is a perspective explanatory diagram of the front side. FIG. 7 is an explanatory diagram showing an enlarged view of a main part of the cross section taken along line AA in FIG. 2. FIG. 8 is an explanatory diagram showing an enlarged view of a main part of the cross section taken along line BB in FIG. 2.

[0013] The surveillance camera 1 comprises a camera device 2 having a camera section 4 and a microphone section 5, and a communication device 3 for transmitting and receiving images captured by the camera section 4 to and from other devices. The communication device 3 is connected to the rear of the camera device 2 via an angle adjustment mechanism 6. The attitude of the camera device 2 relative to the communication device 3 can be adjusted by rotating the angle adjustment mechanism 6 around an axis in the vertical direction and an axis in the horizontal direction. Such a surveillance camera 1 is used by installing the rear surface of the communication device 3 on an installation surface such as a wall.

[0014] Here, the waterproof structure of the main body case 10 of the camera device 2, which is the main part of the present invention, will be described. The camera device 2 has a main body case 10 including a synthetic resin case member formed by assembling a front case 11 and a rear case 12, and a camera-side adjustment member 20 attached to the back of the case member so as to cover an opening 24 (described later). A camera (not shown), a microphone (not shown), a control board (not shown) that controls their operation, and the like are installed inside the main body case 10. The camera-side adjustment member 20 is made of metal and includes a cover body 22 molded into a generally rectangular plate shape when viewed from the front, and a camera-side angle adjustment unit 21, which is a component of the angle adjustment mechanism 6 and protrudes rearward from the rear surface of the cover body 22. Reference numeral 23 denotes a screw hole for screwing the camera-side adjustment member 20 to the case member.

[0015] Meanwhile, an opening 24 is formed on the back surface of the rear case 12, and an inner waterproof rib 25 that protrudes rearward is provided around the edge of the opening 24. An annular recess 26 that is recessed forward is provided on the outside of the inner waterproof rib 25 so as to surround the opening 24. The annular recess 26 has a left recess located on the left side of the opening 24 and extending in the vertical direction, an upper recess located above the opening 24 and extending in the horizontal direction, a right recess located on the right side of the opening 24 and extending in the vertical direction, and a lower recess located below the opening 24 and extending in the horizontal direction, and these recesses are connected to form a series of recesses. Mounting bosses 27, 27·, which protrude rearward and have screw holes for screwing the camera side adjustment member 20, are provided within the annular recess 26.

[0016] Furthermore, insertion holes 28 (shown in FIG. 8 ) through which screws 53 can be inserted are formed in the annular recess 26 at the connection points between the upper recess and the left recess, the connection points between the upper recess and the right recess, the connection points between the lower recess and the left recess, and the connection points between the lower recess and the right recess. These screws are used to integrate the front case 11 and the rear case 12. Each insertion hole 28 is formed in a screw storage section 29 recessed forward. A waterproof ridge 30 with a triangular cross section protruding rearward is provided along the edge of the rear opening of each screw storage section 29 so as to surround the screw storage section 29. Furthermore, a switch opening 31 is formed between the upper and lower screw storage sections 29 in the right recess of the annular recess 26, exposing a switch 51 on a circuit board 50 disposed inside the main case 10 to the rear side. Similarly to the waterproof ridges 30, support ridges 32 having a triangular cross section and projecting rearward are provided around the edge of the switch opening 31.

[0017] Additionally, within the annular recess 26, a case ridge 33 with a triangular cross section protruding rearward extends in the vertical or horizontal direction to connect the waterproof ridges 30, 30. For example, the case ridge 33 within the upper recess of the annular recess 26 extends in the horizontal direction to connect the left and right waterproof ridges 30, 30. The case ridge 33 within the upper recess is located at the highest position in the horizontal direction, and extends from this center to the left and right waterproof ridges 30, 30 at an inclined downward angle. The case ridge 33 within the left recess extends in the vertical direction to connect the upper and lower waterproof ridges 30, 30. The case ridge 33 within the right recess extends in the vertical direction to connect the upper and lower waterproof ridges 30, 30, passing through the support ridge 32 along the way to connect the upper and lower waterproof ridges 30, 30. The case ridge 33 within the lower recess extends in the horizontal direction to connect the left and right waterproof ridges 30, 30, although it is interrupted by the drainage ridges 34 described below. The case ridges 33 in the lower recess extend from the left and right waterproof ridges 30, 30 toward the center in the left-right direction, sloping downward.

[0018] A bottom wall 52 that protrudes rearward extends in the left-right direction along the lower edge of the rear case 12, and the lower side of the annular recess 26 is closed by the bottom wall 52. A drainage recess 34 that is recessed further forward is provided within the lower recess so as to extend in the left-right direction along the bottom wall 52. Notches 35, 35 are provided below the drainage recess 34 on the bottom wall 52 to drain water droplets that have entered the drainage recess 34 out of the main case 10.

[0019] The packing 40 can be stored so as to fill the annular recess 26. The packing 40 is formed in a frame shape with an opening of the same shape as the opening 24 at approximately the center of a plate whose thickness direction is the front-to-rear direction. The outer periphery of the packing 40 is provided with cutouts 41, 41... for exposing the mounting boss 27 when the packing 40 is stored in the annular recess 26. In addition, a drainage port 46 is opened at the bottom edge of the packing 40, at a location behind the drainage recess 34 when the packing 40 is stored in the annular recess 26, for guiding water droplets that flow down along the rear surface of the packing 40 into the drainage recess 34. The thickness of the packing 40 is thinner than the depth of the annular recess 26 in the front-to-rear direction.

[0020] Additionally, packing waterproof ribs 42, 42·· are provided on the front surface of the packing 40 at locations corresponding to the screw storage recesses 29, 29·· when the packing 40 is housed in the annular recess 26. Each packing waterproof rib 42 extends along a circumference having approximately the same diameter as the screw storage recess 29. When the packing 40 is housed in the annular recess 26, the rib 42 enters the screw storage recess 29 and can abut against the inner circumferential surface of the screw storage recess 29. Furthermore, an operation protrusion 43 protruding forward is provided on the front surface of the packing 40 at a location corresponding to the switch opening 31 when the packing 40 is housed in the annular recess 26. The operation protrusion 43 enters the switch opening 31 when the packing 40 is housed in the annular recess 26, and the tip of the operation protrusion 43 protrudes further inward from the surface of the rear case 12 than the surface of the main case 10. In addition, a support groove 44 recessed rearward is provided along the base of the operation protrusion 43 on the front surface of the packing 40. The support groove 44 extends along a circumference of approximately the same diameter as the switch opening 31, allowing the support ridge 32 to fit into it when the packing 40 is inserted into the annular recess 26. Meanwhile, a rearward-protruding packing ridge 45 with a triangular cross section is provided on the rear surface of the packing 40. When the packing 40 is inserted into the annular recess 26, the packing ridge 45 extends along the outer sides of the case ridge 33, waterproof ridge 30, and support ridge 32 in both the vertical and horizontal directions. In other words, the packing ridge 45 is offset vertically or horizontally from the case ridge 33, waterproof ridge 30, and support ridge 32 in a front view. A discontinuous portion 47 is provided on the packing ridge 45 at a location corresponding to the operation protrusion 43 to guide downward any water droplets that may accidentally adhere to the operation protrusion 43, for example, when the operation protrusion 43 is operated.

[0021] To assemble the waterproof structure for the casing 10 described above, the front and rear casings 11 and 12 are assembled, and then the packing 40 is placed in the annular recess 26. The camera-side adjustment member 20 is then screwed in place so that it covers the packing 40 from the rear. The packing 40 is sandwiched between the rear casing 12 and the camera-side adjustment member 20 from the front and rear, completing the assembly of the waterproof structure. In the waterproof structure assembled in this manner, not only the crushed packing 40 but also the case ribs 33 on the front side of the packing 40 and the packing ribs 45 on the rear side of the packing 40 prevent water from entering the casing 10 through the ribs 33 and 45. The waterproof ribs 30 and the packing waterproof ribs 42 also prevent water from entering the casing 10 through the insertion holes 28. The support ribs 32 also prevent water from entering the casing 10 through the switch opening 31. In addition, water running down the surface of packing 40 is guided into drain recess 34 and drained out of main body case 10 via notch 35. To operate switch 51, after removing camera-side adjustment member 20, the part of packing 40 that corresponds to operation protrusion 43 is pushed forward. By pushing in this manner, operation protrusion 43 moves forward, and switch 51 is operated.

[0022] According to the waterproof structure of the main body case 10 configured as described above, the case ridges 33 that protrude toward the packing 40 extend in the direction of the annular recess 26, inside the annular recess 26 in which the packing 40 is housed. Therefore, when the packing 40 is sandwiched from the front and rear between the rear case 12 and the camera-side adjustment member 20, the packing 40 is easily deformed, and a high level of waterproofness can be achieved.

[0023] Furthermore, although a screw storage section 29 having an insertion hole 28 is provided within the annular recess 26, a waterproof ridge 30 is provided that protrudes toward the packing 40 along the opening edge of the screw storage section 29. Therefore, water is less likely to penetrate into the screw storage section 29, and ultimately into the interior of the main body case 10 via the insertion hole 28, resulting in a waterproof structure with even higher waterproofness.

[0024] Furthermore, the surface of the packing 40 is provided with packing waterproof ribs 42 that protrude towards the rear case 12 and can enter the screw storage portion 29 and come into contact with the inner peripheral surface of the screw storage portion 29, and packing ridges 45 that protrude towards the camera side adjustment member 20 and are crushed by the camera side adjustment member 20. Therefore, it is possible to reliably prevent water that has seeped in along the surface of the packing 40 from seeping further in than the packing waterproof ribs 42 and the packing ridges 45, and a waterproof structure that exhibits extremely high waterproof performance can be achieved. Furthermore, when viewed from the front, the packing ridges 45 are offset vertically or horizontally from the case ridges 33, waterproof ridges 30, and support ridges 32, so that the provision of the packing ridges 45 can prevent the packing 40 from becoming difficult to deform.

[0025] Additionally, a switch opening 31 is provided within the annular recess 26, and a switch 51 exposed within the switch opening 31 is provided inside the main body case 10, while a packing 40 is attached to cover the switch opening 31, and an operation protrusion 43 is provided on the packing 40 that protrudes into the interior of the main body case 10 through the switch opening 31. This allows for a streamlined structure and a reduction in the number of parts.

[0026] The waterproof structure of the case body according to the present invention is not limited to the above-described embodiment, and the overall configuration of the case body as well as the configuration related to the gasket, etc., can be appropriately modified as needed within the scope of the present invention.

[0027] For example, in the above embodiment, the rear case has a case ridge that protrudes toward the packing, but the camera-side adjustment member, which is the cover member, may have a ridge that protrudes toward the packing, or there is no problem in providing ridges on both the case member and the cover member. Furthermore, the direction in which these ridges extend can be changed as needed.

[0028] Furthermore, in the above embodiment, the packing ridges are provided only on the rear surface of the packing, but the design can be modified as appropriate, such as providing the packing ridges on the front surface of the packing, providing the packing ridges on both the front and rear surfaces, or not providing the packing ridges, etc. Also, in the above embodiment, the packing ridges are provided so as to be offset from the case ridges in front view, but there is no problem if the packing ridges and the case ridges partially overlap in front view.

[0029] In addition, while the above embodiment describes a waterproof structure for the main body case of a camera device, the present invention can also be suitably employed as a waterproof structure for the case body of communication devices such as intercom devices and electrical devices such as outlet devices, as long as the waterproof structure is for a case body that includes a case member having an opening and a cover member that is attached to cover the opening. [Explanation of symbols]

[0030] 2··Camera device, 10··Main case (case body), 11··Front case, 12··Rear case (case member), 20··Camera side adjustment member (cover member), 24··Opening, 26··Annular recess, 28··Insertion hole (hole), 29··Screw storage section (recess), 30··Waterproof ridge (ridge), 31··Switch opening, 32··Support ridge (ridge), 33··Case ridge (ridge), 40··Gasket, 42··Gasket waterproof rib, 43··Operation protrusion, 45··Gasket ridge.

Claims

1. A waterproof structure for a case body including a case member having an opening and a cover member attached to close the opening, the waterproof structure being formed by interposing a packing between the case member and the cover member, A waterproof structure in a case body, characterized in that a protrusion protruding toward the gasket extends in a predetermined direction at at least one of the contact points of the gasket on the case member and the contact points of the gasket on the cover member.

2. A waterproof structure for a case body as described in claim 1, characterized in that a recess is provided at the contact point of the case member with the gasket, a hole is drilled within the recess, the gasket is attached so as to cover the recess, and the ridge is provided along the periphery of the recess.

3. 3. The waterproof structure in a case body according to claim 1, wherein a packing ridge is provided on a surface of the packing, and the packing ridge is in contact with the case member or the cover member.

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