JP5953610B2 - Water drainage structure for electrical equipment - Google Patents

Description

  The present invention relates to a water drain structure for an electrical device for disaster prevention or crime prevention installed on a wall surface.

  One type of electrical equipment is an alarm device for disaster prevention or crime prevention installed on a wall surface. Since such an electric device normally needs to maintain its function even when the alarm device is exposed to water, for example, a drainage structure for draining water that has entered the alarm device is provided. Provided.

  For example, as the water draining structure, Patent Document 1 describes a water stop wall provided between an apparatus main body and a sealing body that covers at least a part of the apparatus main body. The water blocking wall is specifically a rising portion formed in the device main body, and a plurality of water blocking ribs are formed on the peripheral surface of the rising portion. The plurality of water blocking ribs are arranged at a predetermined interval from each other, and can dam the water that has entered the first water blocking rib. Even if water tries to enter the internal space side of the electrical equipment beyond the first water stop rib, the water can be sequentially blocked by the next water stop rib.

The plurality of water stopping ribs form a wall of a water drainage channel for draining water entering the inside of the electric equipment to the outside. One or a plurality of such drainage paths are formed according to the number of the water stop ribs. The drainage path is continuously formed without interruption from the upper part of the apparatus main body to the side part and further to the lower part in the posture in which the electric apparatus is installed. Therefore, when the invading water is blocked by the first water stop rib, it reaches the lower part of the device main body through the first water drainage path. Even if the water that has infiltrated climbs over the first water stop rib, it is blocked by the next water stop rib and passes through the next water drainage path to the lower part of the device body. In this way, the drainage effect can be enhanced by the drainage path, and water can be prevented from entering the internal space side of the device body.
In the structure described in Patent Document 1, in order to further enhance the drainage effect of the drainage channel, for example, a drainage hole is formed in the lowermost end of the sealing body.

JP 2007-102555 A

  In the electric device described in Patent Document 1, for example, water that has entered the internal space side of the electric device from a gap between the device main body and a sealing body that covers at least a part of the device main body is caused by a water stop rib or a drainage channel. It can be discharged outside the electrical equipment.

  On the other hand, in the electric device described in Patent Document 1, a speaker opening or the like for making an alarm sound is formed in the sealing body, and there is a possibility that water may enter the internal space of the electric device from such an opening. is there. In this case, for example, it reaches the lower part in the installation posture of the electric device along the inside of the sealing body. That is, the water that has entered the internal space of the electrical device from a place other than the gap between the device body and the sealing body is difficult to be discharged outside the electrical device unless it flows down the drainage path beyond the prevention rib, for example. It is easy to collect below.

  Accordingly, an object of the present invention is to provide a drainage structure for an electrical device that facilitates drainage of water that has entered the internal space.

In order to achieve the above object, a drainage structure for an electrical device according to the present invention is a drainage structure for an electrical device having a device body and a sealing body covering at least a part of the device body. When the sealing body is assembled to the device body, the peripheral edge portion of the main body of the device body and the sealing edge portion of the sealing body overlap, respectively, and at least the peripheral edge portion of the main body and the sealing edge portion In any one of the above, the at least one groove portion is provided inside the electric device so as to be along the peripheral edge of the electric device, and in the first posture when the electric device is installed, the electric device is provided below the electric device. It is in the point provided with the crossing groove part which cross | intersects a groove part and connects the internal space of the said electric equipment, and the said groove part .

  In this configuration, the groove provided in at least one of the peripheral edge portion of the main body and the sealing end portion is formed by a space between adjacent ribs. For example, the groove can be configured to communicate with a gap formed when the sealing body is assembled to the device main body, so that water flowing down the groove can be discharged to the outside through the gap.

For example, an opening such as a speaker opening is formed in the sealing body, and water may enter the internal space of the electric device from the opening. The water that has entered from such an opening reaches, for example, the lower part of the installation posture of the electric device along the inside of the sealing body. Thus, the water that has once entered the electric device from the opening easily accumulates in the lower part of the internal space of the electric device while being blocked by the ribs.
In this configuration, in the first posture, there is an intersecting groove portion that intersects with the groove portion provided below the electric device and communicates the internal space of the electric device and the groove portion. Therefore, the water that has tried to accumulate below the internal space of the electric device can flow into the groove portion via the intersecting groove portion without being blocked by the ribs that form the groove portion. The water that has flowed into the groove can be discharged to the outside through a gap communicating with the groove.
Thus, with the drainage structure of this configuration, it is possible to easily drain the water that has entered the internal space of the electrical equipment.

The second characteristic configuration of the drainage structure for an electrical device according to the present invention is such that the water from the cross groove portion flows into the groove portion in the second posture different from the first posture. Is at the crossing point.
According to this configuration, for example, when the horizontal posture is changed from the first posture to the second posture in the vertical posture, the water present in the intersecting groove portion can be configured to flow into the groove portion by gravity. Thereby, even if it is a case where the attitude | position of an electric equipment is changed from a 1st attitude | position to a 2nd attitude | position, it can prevent that the water which exists in a crossing groove part permeates into the internal space of an electric equipment.

According to a third characteristic configuration of the drainage structure for an electrical apparatus according to the present invention, the first posture is a horizontal posture, the second posture is a vertical posture, and the cross groove portion is in the second posture state. The crossing groove part and the groove part intersect with each other so that the groove part merges at an acute angle with the groove part.
According to this configuration, even when the posture of the electric device is changed from the first posture (horizontal posture) to the second posture (vertical posture), water existing in the crossing groove portion enters the internal space of the electric device. Infiltration can be prevented.

A fourth characteristic configuration of the drainage structure for an electrical device according to the present invention is that the intersecting groove is provided below an opening formed in the sealing body in the vertical direction of the first posture.
Water that has entered the interior of the electrical device from an opening such as a speaker opening tends to accumulate below the internal space of the electrical device while being blocked by the ribs. Since it is provided below the opening, water that has tried to accumulate below the internal space of the electrical equipment can quickly flow into the groove via the intersecting groove without being blocked by the rib forming the groove. Can do. Therefore, in this configuration, the water can be quickly discharged to the outside.

It is a perspective view which shows the outline | summary of an electric equipment. It is a disassembled perspective view of an electric equipment. It is a disassembled perspective view of an electric equipment. It is sectional drawing of an electric equipment. It is the schematic of an apparatus main body. It is the schematic which shows the electric equipment of a 1st attitude | position (horizontal attitude | position). It is the schematic which shows the electric equipment of a 2nd attitude | position (vertical attitude | position).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The present invention is a drain structure for an electrical device having a device body and a sealing body covering at least a part of the device body.
As shown in FIGS. 1 to 7, when the sealing body 20 is assembled to the device main body 10, the water draining structure of the electric device X seals the main body peripheral edge 12 a of the device main body 10 and the sealing body 20. At least one groove B is formed inside the electric device X so as to follow the peripheral edge A of the electric device X in at least one of the main body peripheral end portion 12a and the sealing end portion 21. It is.

  The electric device X may be any device as long as it is installed on the wall surface. As an electric equipment installed in the said wall surface, the alarm device for disaster prevention or crime prevention is mentioned, for example. This embodiment demonstrates the aspect which installs the gas alarm which detects the leak of combustible gas (LP gas) as the electric equipment X on the indoor wall surface. The shape of the electric device X is not particularly limited, but in the present embodiment, a rectangular shape in a top view and a thick plate shape (for example, 12 × 7 × 2.5 cm) is illustrated. In this case, the electric device X can be installed in a horizontal orientation in which the short side a1 is installed perpendicular to the ground, or in a vertical orientation in which the long side a2 is installed perpendicular to the ground.

  In the present embodiment, the horizontal posture is the first posture, and the vertical posture is the second posture. The drainage structure of the electric device X of the present invention is provided with a cross groove E that intersects with the groove B formed below the electric device X in the first posture when the electric device X is installed (FIG. 6). .

  The device body 10 accommodates the circuit board 30 and is configured by integrally forming the bottom surface 11 and the side surface 12. That is, the circuit board 30 is accommodated in a space surrounded by the bottom surface 11 and the side surface 12. At the end of the side surface 12 (on the side of the sealing body 20), a main body peripheral edge portion 12 a that is disposed so as to overlap the sealing body 20 is formed. In the present embodiment, when the sealing body 20 is assembled to the device main body 10, when the main body peripheral edge 12 a and the sealing end 21 are overlaid, the main peripheral edge 12 a is positioned inside. explain.

  Moreover, this embodiment demonstrates the case where the groove part B is formed in the main body peripheral edge part 12a so that the peripheral edge A of the electric equipment X may be followed. In this case, when the sealing end portion 21 and the main body peripheral edge portion 12a are overlapped, the sealing end portion 21 covers the groove B formed in the main body peripheral edge portion 12a.

  A plurality of water blocking ribs 12b are formed on the peripheral edge 12a of the main body over the entire circumference, and the groove B is formed by a space between adjacent water blocking ribs 12b. At least one groove B may be formed. In the present embodiment, for example, in the posture when the electric device X is placed vertically, one groove B is formed on the lower half circumference of the main body peripheral edge 12a, and two grooves B are formed on the remaining upper half circumference. They are configured to be arranged side by side (FIG. 5). At this time, these two groove parts B merge by the merge groove B1. In the posture (second posture: FIG. 7) when the electric device X is placed vertically, the joining groove B1 joins one groove portion B (sealing body 20 side) obliquely downward to the other groove portion B. It is comprised so that it may do. Thereby, the water that has flowed down through one groove B can flow down through the other groove B.

  The sealing body 20 is a member that covers at least a part of the device main body 10. In this embodiment, the sealing body 20 has the 1st sealing body 20a which covers the whole apparatus main body 10, and the 2nd sealing body 20b which covers the opening part 22 of the 1st sealing body 20a.

  The first sealing body 20a is formed with a switch opening 23 for exposing the switch 40 and a speaker opening 24 for transmitting an alarm sound to the outside. In the present embodiment, the portion of the switch 40 exposed from the switch opening 23 (operation unit 41) is an oval shape, for example, a rounded rectangle (consisting of two equal-length parallel lines and two semicircles). The switch opening 23 is shaped like a rounded rectangle so as to correspond to the exposed portion.

  An inclined surface 25 is formed at the corner of the first sealing body 20a where the switch opening 23 is provided so that the thickness of the first sealing body 20a gradually decreases toward the corner. . In the present embodiment, the inclined surface 25 is configured to be inclined from a position about half of the switch opening 23.

  On the side surface of the first sealing body 20a, a detected gas introduction port 26 for introducing the detected gas into the gas detection unit 31 is provided. Moreover, the holding part 27 which hold | maintains the switch 40 is provided in the inside (back surface) of the 1st sealing body 20a, Furthermore, the positioning projection part which determines the distance of the apparatus main body 10 and the 1st sealing body 20a 28 is provided.

  Components such as a gas detection unit 31, a notification unit 32, and a terminal block 33 are disposed on the circuit board 30, for example. A power cord 34 is connected to the circuit board 30.

  The gas detector 31 may be in any form as long as it detects a combustible gas (LP gas) that is a gas to be detected. For example, a known semiconductor sensor element or a contact combustion sensor element may be used. The provided one can be used.

  The notification unit 32 may be in any form as long as it issues a warning in response to a signal from the gas detection unit 31. For example, a piezoelectric speaker or the like can be used.

  The terminal block 33 may be in any form that can connect a connection terminal from the outside, and is disposed on the circuit board 30 so as to be exposed from the opening 22 of the first sealing body 20a. When connecting an external connection terminal to the terminal block 33, for example, the second sealing body 20 b covering the opening 22 may be slid downward to expose the terminal block 33.

  In the present embodiment, a drainage portion C that can discharge water that has entered the inside of the electric device X is formed at the peripheral edge A of the electric device X.

  In this configuration, when the electric device X is arranged so that the peripheral edge A where the drainage portion C is formed faces downward, the water that has entered the electric device X can be discharged from the drainage portion C by gravity. That is, since the groove part B and the water stop rib 12b are provided in the direction substantially orthogonal to the water intrusion direction, the water that has entered the water stop rib 12b can be blocked. Even if water enters the internal space side of the gas alarm device X beyond the first water stop rib 12b, it can be blocked by the next water stop rib 12b. The dammed water flows down the electric device X along the groove B, reaches the water drain C, and can be discharged to the outside.

  In the present embodiment, the drainage portion C is a gap when the main body peripheral edge portion 12a and the sealing end portion 21 are arranged in an overlapping manner.

  Such a gap communicates with a groove B formed in the main body peripheral edge 12a. Therefore, according to this structure, since the clearance gap formed when the sealing body 20 is assembled | attached to the apparatus main body 10 can be made into the drainage part C, the drainage part C can be formed easily.

  Moreover, since the said clearance gap can be formed over the length of a long side, and the length of a short side, the drain part C can be formed long. Thereby, the area | region which can discharge | release the water which permeated the inside of the gas alarm device X can be ensured over the periphery of the gas alarm device X. Such a gap is usually formed in an elongated line shape. In this case, since the water that has reached the drainage portion C is likely to move through the gap by capillary action, it is easy to efficiently discharge the water to the outside.

In the present invention, an intersecting groove E that intersects with the groove B formed below the electric device X is provided in the first posture (horizontal posture: FIG. 6) when the electric device X is installed.
In the electric device X, an opening such as the speaker opening 24 is formed in the sealing body 20, and water may enter the internal space of the electric device X from the opening. The water that has entered from such an opening reaches, for example, the lower part of the installation posture of the electric device X along the inside of the sealing body 20.

  As described above, the water that has entered the electric device X from the outside can be discharged from the drainage portion C by gravity by the groove portion B and the water stop rib 12b. However, the water that has once entered the interior of the electric device X from the opening such as the speaker opening 24 is likely to be accumulated below the internal space of the electric device X while being blocked by the water stop rib 12b.

  In this configuration, in the first posture (horizontal posture: FIG. 6), an intersecting groove E that intersects with the groove B formed below the electric device X is provided. Therefore, the water that has tried to accumulate below the internal space of the electric device X can flow into the groove portion B via the intersecting groove portion E without being blocked by the water stop rib 12b. The water that has flowed into the groove portion B reaches the drainage portion C and can be discharged to the outside. Therefore, with the drainage structure of this configuration, it is possible to easily drain water that has entered the internal space of the electric device X.

In the present embodiment, the intersecting groove E and the groove B intersect each other so that water from the intersecting groove E flows into the groove B in a second posture (vertical posture: FIG. 7) different from the first posture. .
In this structure, when it changes from a 1st attitude | position (horizontal attitude | position) to a 2nd attitude | position (vertical attitude | position), it can comprise so that the water which exists in the crossing groove part E may flow into the groove part B by gravity. That is, as shown in FIG. 7, when the intersecting groove E and the groove B cross each other so that the intersecting groove E meets the groove B at an acute angle in the second posture (vertical posture) as shown in FIG. Good. Thereby, even when the posture of the electric device X is changed from the first posture (horizontal posture) to the second posture (vertical posture), the water existing in the crossing groove E enters the internal space of the electric device X. Infiltration can be prevented.

  The drainage structure of the electrical device of the present invention can be used for the drainage structure of an electrical device for disaster prevention or crime prevention installed on a wall surface.

X Electrical equipment A Peripheral edge B Groove E Crossing groove 10 Equipment body 12a Body peripheral edge 20 Sealing body 21 Sealing edge

Claims (4)

In the drainage structure of the electrical apparatus having a sealing body covering at least a part of the apparatus body and the apparatus body,
When the sealing body is assembled to the device body, the peripheral edge of the body of the device body and the sealing edge of the sealing body overlap,
In at least one of the main body peripheral edge and the sealing end, at least one groove is provided inside the electric device so as to be along the peripheral edge of the electric device,
In the first posture when the electric device is installed, the drainage structure of the electric device includes an intersecting groove portion that intersects the groove portion provided below the electric device and communicates the internal space of the electric device and the groove portion. .   The drainage structure for an electrical device according to claim 1, wherein the intersecting groove portion and the groove portion intersect so that water from the intersecting groove portion flows into the groove portion in a second posture different from the first posture. . The first posture is a horizontal posture, and the second posture is a vertical posture;
3. The drainage structure for an electrical device according to claim 2, wherein in the state of the second posture, the intersecting groove portion and the groove portion intersect so that the intersecting groove portion meets the groove portion at an acute angle downward. The drainage structure for an electrical device according to claim 1, wherein the intersecting groove portion is provided below an opening formed in the sealing body in the vertical direction of the first posture.

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