JP2781127B2 - Electronic equipment housing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof electronic equipment housing which is installed outdoors or the like.

[0002]

2. Description of the Related Art FIG. 5 is a perspective view of a housing of a conventional waterproof electronic device. In FIG. 5, reference numeral 1 denotes a box having an open front surface for storing electronic devices; The cover 3, the door packing attached to the cover 2 to seal the joint between the cover 2 and the box 1, the locking mechanism 4 attached to the cover 2 to keep the cover 2 closed, and the box 5, the box 1 A mounting leg 7 extending from the side surface of the mounting leg 6 and having a mounting hole 6 formed therein, is mounted in the mounting hole 6 of the mounting leg 5 and screwed into the support 8 to fix the entire housing to the support 8. , 9 is a cable externally connected to the electronic device for supplying power to the electronic device or transmitting / receiving a signal to / from the electronic device, 10 is a wiring for sealing a wiring port 11 of the cable 9 formed in the box 1. Mouth packing, 1
Reference numeral 2 denotes a breathing hole formed on the bottom surface of the box 1 and closed by the ventilation sheet 13. The ventilation sheet 13 allows only air to pass without passing moisture. Wiring port 1
Numeral 1 is formed on the bottom side of the box 1 so that rainwater or the like does not fall directly.

Next, the operation will be described. The electronic device housing accommodates the electronic device in the box 1 and is attached to the support body 8 with mounting screws 7. With the cover 2 closed, the inside of the box 1 is sealed with the door packing 3 and the wiring port packing 10. As a result, the electronic device housed in the box 1 is protected from rain and dew. In addition, since only the air enters and exits through the breathing hole 12, the occurrence of a pressure difference between the inside and the outside is prevented, and the suction of water that occurs when the pressure in the housing is reduced is prevented, so that the waterproof function is reliably maintained. .

FIG. 6 is a perspective view of another conventional example of a waterproof electronic device housing. In FIG. 6, reference numeral 14 denotes a mounting hole formed on the rear surface of the box 1 and through which a mounting screw 7 is inserted. Since the other configuration of this conventional example is the same as that of the example of FIG. 5, the same reference numerals are given and the description is omitted.

Next, the operation will be described. The housing of the electronic device is fixed to the support 8 by screwing the mounting screws 7 into the support 8 from the inside of the box 1 through the mounting holes 14.
The electronic device is housed inside the box 1 to protect the electronic device in the same manner as the housing of FIG. 5, but a gap between the mounting hole 14 and the mounting screw 7 is formed by, for example, a sealing material for waterproofing ( (Which solidifies after application). In addition, in this case, the head of the mounting screw 7 is not exposed unless the cover 2 is opened.

[0006]

Since the conventional electronic equipment housing is constructed as described above, first, in the case of the one shown in FIG. 5, even if the lock mechanism 4 is effective, the mounting screws 7 exposed to the outside are not required. By removing the electronic device, there is a possibility that the electronic device may be taken away and stolen with the whole housing. On the other hand, the one shown in FIG. 6 is free from such a theft. However, as described above, the work of sealing the insertion portion of the mounting screw 7 is required, and the installation is troublesome. The sealing area by the opening of the box 1 and the door packing 3 is increased by the amount provided, and the sealing performance is insufficient only by the pressing force of the lock mechanism 4, and the waterproof ability is insufficient.

Further, as problems common to the two housings shown in FIGS. 5 and 6, there is a problem that water accumulated in the housings due to condensation or the like is not drained, and a wiring port 11 of the cable 9 is exposed to the outside. For this reason, there is a problem that the arrangement position of the wiring port 11 is limited to the bottom surface side of the housing for waterproof performance.

[0008] As a prior art related to the present invention,
For example, there is a device disclosed in Japanese Utility Model Application Laid-Open No. 58-31709 or the like, but there is no device which simultaneously secures waterproofness, theft resistance and mounting workability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has high waterproofness, excellent workability in installation and anti-theft property, and further has a drainage property and a cable wiring position. It is an object of the present invention to obtain an electronic device housing which is excellent in the degree of freedom.

[0010]

According to the first aspect of the present invention, there is provided an electronic apparatus housing having an outer box with an open front, and an inner box with an open front inside the outer box. An inner box to be housed, and a cover fixed to the inner box or the outer box with a cover mounting screw in a state of covering the entire opening on the front surface of the outer box and the inner box. A wiring port for passing an external cable connected to the electronic device and a breathing hole closed by a ventilation sheet are provided, and a wiring port packing for sealing the cable insertion portion is attached to the wiring port, The outer box has an inlet for passing the cable, and a housing mounting hole through which a housing mounting screw for fixing the housing to the support can be screwed into the support. Provided around the inner box, A space for routing the cable from the entrance to the wiring port of the inner box is also formed, and the cover has a lockable door which can seal or open the opening of the inner box via a door packing. And a cover mounting hole for inserting the cover mounting screw and screwing into the inner box or the outer box at a location exposed only when the door is opened.

In the electronic device housing according to the present invention, a drain port which is covered with the outer box and is not exposed to the outside is formed on a lower surface of the inner box.

Further, according to a third aspect of the present invention, in the electronic device housing, the outer box or the cover has a hollow structure that forms an air layer isolated from the inside of the inner box outside the inner box. A ventilation opening for allowing air to flow therethrough is formed.

[0013]

According to the first aspect of the present invention, the inner box can be made a minimum size, and when the cover door is closed, the door packing and the wiring port packing allow the breathing hole (or the necessity). (Except for the drain port provided), and the surrounding area is covered with an outer box, and the ventilation sheet for the breathing hole ensures air permeability to the outside air. In addition, even if the outside air pressure fluctuates, it exhibits a high waterproof function to reliably protect the electronic device housed therein from moisture such as rain and dew.

That is, there is no need to provide a mounting hole in the inner box to insert the mounting screws, and the inner box can be made the minimum size for storing the electronic equipment. And the pressing force of the lock mechanism can be prevented from being insufficient. In addition, since it is unlikely that rainwater will fall directly on the inner box, high waterproofness can be secured without arranging the wiring port on the lower surface side.
Further, since the pressure in the inner box is maintained equal to that of the outside air by only the inflow and outflow of the air through the ventilation sheet, water is not sucked by breaking the seal of each packing due to the pressure difference.

The outer case and the inner case can be fixed to the support by housing fixing screws which are inserted into the case mounting holes of the outer case from inside and screwed into the support. By screwing the screw into the inner box etc. through the cover mounting hole formed at the position covered by the door,
Because of the mounting configuration, as long as the door lock mechanism is working, neither the internal electronic device nor the entire housing can be removed from the support and taken away. Because, when the cover is installed and the cover door is closed, the housing mounting screws are covered by the outer box and the entire cover, and the cover mounting screws are covered by the door. is there.

Further, as described above, the position of the wiring port does not affect the waterproofness, and a space around the inner box in the outer box is formed around the inner box. And the degree of freedom in designing the cable connection configuration and the like in the electronic device is improved.
Further, since the housing mounting hole for the housing mounting screw is provided in the outer box, it is not necessary to ensure the sealing property of this portion, and when mounting the housing mounting screw (that is, fixing the present housing to the support). In this case, it is not necessary to apply a sealing material for waterproofing to the housing mounting screw.

Further, the drain port according to the second aspect of the invention is covered with the outer box and is not exposed to the outside, thereby preventing intrusion of rainwater and the like, and preventing water collected by dew condensation or the like on the inner bottom surface of the inner box. It is discharged to the outside via the outer box and protects electronic devices from moisture such as dew.

The outer box or cover according to the third aspect of the invention has a hollow structure and functions as a heat insulating layer for covering the inner box by passing air through the inner box. , Electronic equipment) to protect the electronic equipment from a temperature aspect.

[0019]

[Embodiment 1] An embodiment of the present invention will be described below with reference to FIGS. In FIG.
Is a rectangular parallelepiped outer box with an open front, 22 is an inner box provided inside the outer box 21 with the front also opened to house the electronic device therein, and 23 is the outer box 21 and the inner box. A cover fixed to the inner box 22 so as to cover the entire opening at the front surface of the inner box 22.

The inner box 22 has a smaller vertical and horizontal size than the outer box 21 but has a larger dimension in the depth direction than the outer box 21, and has a front end face extending forward from the outer box 21. In this case, it is formed integrally with the outer case 21. That is, a wall serving as a side wall of the inner box 22 is formed at a right angle on a vertical surface inside the outer box 21 so as to be provided inside the outer box 21. The inner box 22 has a wiring port 24 for passing a cable 9 from the outside connected to the electronic device on a side surface, and a breathing hole 26 closed with a ventilation sheet 25 on a bottom surface. A wiring port packing 27 for sealing the insertion portion of the cable 9 is attached. In addition, this inner box 2
2 are provided with screw holes 2 for fixing the cover 23.
A mounting leg 29 on which an 8 is formed is provided.

The outer case 21 has an inlet 30 for passing the cable 9 below the inner case 22 and the entire housing is supported by the support 14.
The housing mounting hole 32 of the housing mounting screw 31
The cable 9 is provided on both sides of the inner box 22. The cable 9 is routed around the inner box 22 at least from the input port 30 to the wiring port 24 of the inner box 22, and the housing mounting screw 31 is inserted into the housing mounting hole 32 from inside. Thus, a space for screwing into the support 14 is formed.

The cover 23 has a door 35 with a lock mechanism 34 for closing or opening the front opening of the inner box 22 via a door packing 33, and at a location exposed only when the door 35 is opened. Cover mounting screw 36
And has a cover mounting hole 37 for screwing into the screw hole 28 of the inner box 22. In this case, as shown in FIG. 2, the front end surface of the inner box 22 is a seat surface against which the door packing 33 is pressed. The lock mechanism 34 is configured to hold the pressing force when the door 35 is closed, with the claws swinging due to the key insertion and rotation operation and being caught on the edge of the inner box 22 or the cover 23.

Next, the operation will be described. The inner box 22 in the above-mentioned housing can have a minimum size, and when the door 35 of the cover 23 is closed, the breathing hole 26 is formed by the door packing 33 and the wiring port packing 27.
, Except that the surrounding area is covered with the outer box 21 and the ventilation sheet 25 of the breathing hole 26 ensures air permeability to the outside air, regardless of the arrangement position of the wiring port packing 27. In addition, even if the outside air pressure fluctuates, it exhibits a high waterproof function to reliably protect the electronic device housed therein from moisture such as rain and dew.

That is, it is not necessary to provide a mounting hole in the inner box 22 to insert a mounting screw, and the inner box 22 can be made the minimum size for storing electronic equipment. Insufficient pressing force or uneven pressing force of the lock mechanism 34 can be avoided by minimizing the sealing area. Further, since it is impossible for rainwater or the like to directly fall on the inner box 22, high waterproofness can be secured without disposing the wiring port 24 on the lower surface side. Since the pressure inside the inner box 22 is maintained equal to the outside air by entering and exiting, water is not sucked by breaking the seals of the packings 27 and 33 due to the pressure difference.

The outer box 21 and the inner box 22 are
The housing mounting screw 32 can be fixed to the support 14 by inserting the housing mounting screw 31 from the inside into the housing mounting hole 32 and screwing it into the support 14. The cover 23 is covered with the cover mounting screw 36 by the door 35. It is configured to be screwed into the screw hole 28 of the inner box 22 through the cover mounting hole 37 formed at the position, so that as long as the lock mechanism 34 of the door 35 works, the internal electronic device also covers the entire housing. Cannot be removed from the support 14 and carried away. Because, when the cover 23 is attached and the door 35 of the cover 23 is closed, the head of the housing attachment screw 31 is covered by the outer box and the entire cover, and the head of the cover attachment screw 36 is covered by the door 35. Therefore, these cannot be loosened with a driver or the like.

Further, as described above, the position of the wiring port 24 does not affect the waterproof property, and the inner box 2 in the outer box 21 is not affected.
Since a space around the cable 9 is formed around the cable 2, the wiring port 24 may be provided on the side surface as in this example, or may be provided on the upper surface. The degree of freedom in designing the connection configuration and the like is improved. Further, since the housing mounting hole 32 for the housing mounting screw 31 is provided in the outer box 21, it is not necessary to ensure the sealing property of this portion, and when mounting the housing mounting screw 31 (that is, supporting this housing) When fixing to the body 14), it is not necessary to apply a sealing material for waterproofing to the housing mounting screw 31. In addition, it is the same that it is not necessary to apply the sealing material for waterproofing to the cover mounting hole 37.

As described above, in the electronic device housing,
While exhibiting high waterproof performance, it also secures installation workability and theft resistance, and can improve the degree of freedom of cable wiring, so the cable connection position etc. is special electronic equipment Can be installed outdoors and the like with a simple operation, and it is possible to obtain an unprecedented effect that it is possible to block rainwater and the like with high reliability and to perform good protection management.

Embodiment 2 FIG. Next, an embodiment of the present invention will be described with reference to FIG. The same components as those in the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. FIG. 3 is a side cross-sectional view showing the housing of the present embodiment, and is a side cross-sectional view corresponding to a BB cross section in FIG. In FIG. 3, reference numeral 41 denotes a pipe-shaped drain port formed on the lower surface of the inner box 22. This drain 41
Extends downward so as to face the bottom surface of the outer box 21,
It is located inside the outer box 21 and is not exposed to the outside.

In the case of the housing of this embodiment, even if water is generated inside the inner box 22 due to dew condensation or the like, this water flows down the bottom surface and is discharged from the drain port 41 to be discharged. The electronic device can be protected from moisture. In addition, since the drain port 41 is provided on the lower surface side of the inner box 22 and is covered with the outer box 21 and is not exposed to the outside, the possibility of external water such as rainwater entering therethrough is extremely low. The waterproof function has been almost maintained. Therefore, it is possible to protect the electronic device from moisture generated from the inside and to more reliably prevent the occurrence of troubles such as insulation failure.

Embodiment 3 FIG. Next, an embodiment of the invention described in claim 3 will be described with reference to the drawings. The same components as those in the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. FIG. 4 is a side cross-sectional view showing the housing of the present embodiment, and is a side cross-sectional view corresponding to a BB cross section in FIG. In FIG. 4, reference numeral 51 denotes an outer box having a hollow wall on the rear surface side joined to the support 14 and 52 denotes an inner box 2.
The wall covering the front opening of No. 2 is a door having a hollow structure. Air vents 53 and 54 are formed above and below the hollow portion of the outer box 51 so that air can flow through the hollow portion.
Similarly, ventilation holes 55 and 56 are formed above and below the hollow portion 2.

The hollow portion of the outer box 51 may be formed only on the back side of the inner box 22 or may be formed over the entire outer box 51. It is necessary that the housing mounting hole 32 penetrates this hollow portion. Further, the configuration of the cover other than the door 52 and the configuration of the outer box 51 other than the hollow portion are the same as those in the embodiment shown in FIGS.

The outer box 51 or the door 5 in the above embodiment.
Numeral 2 has a hollow structure and functions as a heat insulating layer that covers the inner box 22 by allowing air to pass through as shown by arrows in FIG. By preventing the rise, the electronic device is protected in terms of temperature. Therefore, it is also easy to protect the electronic device from the hot summer sun or the like, and to maintain the electronic device with high reliability within an allowable temperature for maintaining good operation of the electronic device.

The present invention is not limited to the above-described embodiment, but may have various aspects. For example, the mounting leg 29 in FIG.
The same function as described above may be formed in the outer case 21 and the cover 23 may be fixed to the outer case 21. FIG.
May be formed not only on the door but also on the entire cover. In addition, it goes without saying that the electronic device in the present invention includes an electronic circuit or various components or devices constituting the electric circuit.

[0034]

As described above, according to the first aspect of the present invention, high waterproof performance is exhibited, installation workability and theft resistance are ensured, and the degree of freedom of cable wiring is further improved. Even if the connection position of the cable is a special electronic device, it can be easily installed outdoors, etc., and can be protected from rainwater etc. with high reliability. There is an effect that can be managed.

According to the second aspect of the present invention, since the electronic device is configured to protect the electronic device from moisture generated from the inside of the housing due to dew condensation or the like, occurrence of troubles such as insulation failure is more reliably performed. There is an effect that can be prevented.

According to the third aspect of the present invention, since the temperature rise in the inner box due to direct sunlight is suppressed, it is easy to maintain the electronic device within the allowable temperature with high reliability. The effect is as follows.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an electronic apparatus housing according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a side sectional view showing an electronic apparatus housing according to an embodiment of the present invention.

FIG. 4 is a side sectional view showing an electronic apparatus housing according to an embodiment of the present invention.

FIG. 5 is a perspective view illustrating an example of a conventional electronic device housing.

FIG. 6 is a perspective view showing another example of a conventional electronic device housing.

[Explanation of symbols]

 21, 51 Outer box 22 Inner box 23 Cover 24 Wiring port 25 Ventilation sheet 26 Breathing hole 27 Wiring port packing 30 Inlet port 31 Housing mounting screw 32 Housing mounting hole 33 Door packing 34 Lock mechanism 35, 52 Door 36 Cover mounting screw 37 Cover Mounting hole 41 Drain port 53, 54, 55, 56 Ventilation port

Claims (3)

(57) [Claims] 1. An electronic device housing for storing an electronic device and being fixed to a support by a housing mounting screw, comprising: an outer box having an open front surface; and an inner box having an open front surface inside the outer box. An inner box in which the electronic device is housed, and a cover fixed to the inner box or the outer box by a cover fixing screw in a state of covering the entire opening on the front surface of the outer box and the inner box, The inner box has a wiring port for passing a cable from the outside connected to the electronic device, and a breathing hole closed with a ventilation sheet, and a wiring for sealing the insertion portion of the cable in the wiring port. Mouth packing is installed,
The outer box has an inlet for passing the cable, and a housing mounting hole through which the housing mounting screw can be inserted from the inside and screwed into the support, and around the inner box, At least a space for routing the cable from the inlet to the wiring port of the inner box is formed, and the cover has a lock that can seal or open the opening of the inner box via a door packing. An electronic device having a door and having a cover mounting hole for inserting the cover mounting screw and screwing into the inner box or the outer box at a location exposed only when the door is opened. Housing. 2. The electronic device housing according to claim 1, wherein a drain port that is covered by the outer box and is not exposed to the outside is formed on a lower surface of the inner box. 3. The outer box or cover has a hollow structure that forms an air layer isolated from the inside of the inner box outside the inner box, and a ventilation port through which air is circulated is formed inside the hollow box. The electronic device housing according to claim 1, wherein the electronic device housing is formed.