JP2001007560A - Waterproof electronics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a filter against damage caused by contact with an external object and to prevent a hermetically closed vessel from degrading waterproofness by a method wherein the filter is fixed to the inner wall of the hermetically closed vessel, and vent holes are provided in the inner wall so as not to enable the filter to be visually observed. SOLUTION: A vent hole 4A composed of a first vent hole 8 and a second vent hole 10 is provided to enable the inside and outside of a hermetically closed vessel to communicate with each other. The first vent hole 8 is provided like an L shape inside an outer case 1 which forms the hermetically closed vessel together with a shielding member 9a. The inner side edge 8A of the first vent hole 8 is covered with a filter 5 which is high in water resistance and air permeability. The outer side edge 8B of the first vent hole 8 is firmly fixed to the outer wall of the outer case 1, by which the outer side edge 8B is covered with the shielding member 9. The shielding member 9 is equipped with the second vent hole 10 which is provided so as to confront the outer side edge 8B of the first vent hole 8 but not to confront the inner side edge 8A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof electronic device using a plurality of batteries which can be replaced by opening and closing a battery cover as a power source, and more particularly to an electronic device in a sealed container including the battery cover. The present invention relates to a waterproof electronic device having a feature in a configuration corresponding to a pressure change.

[0002]

2. Description of the Related Art A wide variety of waterproof electronic devices using a battery as a power source have been proposed or put into practical use, and their exterior structure is usually formed with a closed structure.

[0003] Of course, the battery is configured so that it can be replaced via a battery cover like an electronic device that is not waterproof, so that the sealed structure is formed including the battery cover.

[0004] That is, a waterproof electronic device is constituted by storing not only a battery serving as the power source but also other electric parts and the like in a sealed container (sealed container) including a battery lid.

[0005] Therefore, it is conceivable that the pressure in the closed container changes due to, for example, a change in the ambient temperature.
When a pressure change occurs in the sealed container, the pressure change affects the sealed state of the sealed structure including the battery lid, and may cause a disadvantage that the waterproof performance of the sealed structure including the battery lid is reduced. .

By the way, as a measure against such inconvenience,
2. Description of the Related Art Conventionally, pressure control means for maintaining a constant pressure in a closed container using a filter having both water resistance and gas permeability is well known.

As shown in FIG. 2, for example, this pressure control means forms a ventilation hole 4 for connecting the inside 2 and the outside 3 of the closed container to an external housing 1 forming the main body of the closed container.
In addition, a filter 5 having both water resistance and air permeability so as to cover the entire area of the ventilation area of the ventilation hole 4, for example, the entire inner end of the ventilation hole 4, is formed by a well-known fixing structure using a holding member 6 and a screw 7. It had a structure to fix it.

[0008]

A pressure control means using a filter 5 having both water resistance and gas permeability as shown in FIG. 2 is, for example, such that the pressure in the inside 2 of the closed vessel becomes higher than the pressure in the outside 3. In this case, the gas in the inside 2 escapes to the outside 3 through the filter 5 and the vent hole 4, whereby the pressure in the inside 2 can be controlled and maintained substantially constant.

However, as is apparent from FIG. 2, the conventional pressure control means has a structure in which the surface of the filter 5 on the side of the outside 3 directly faces the outside 3 and the filter 5 can be visually recognized from outside, in other words, the filter 5 5 has a structure that can directly, easily and directly contact the surface on the side of the outside 3 from the outside 3. There has been a potential risk of mechanical breakage, resulting in a disadvantage that the waterproof performance of the sealed container itself is impaired.

The present invention has been made in consideration of the above-mentioned disadvantages, and a filter having both water resistance and air permeability is not easily broken by external contact. It is an object of the present invention to provide a waterproof electronic device that does not impair the waterproof performance of the sealed container itself.

[0011]

According to the present invention, there is provided a waterproof electronic apparatus, comprising: a ventilation hole connecting an inside and an outside of a closed container;
A filter that has both water resistance and air permeability, and is fixed to the inner wall of the airtight container so as to cover an inner end of the airtight hole in the airtight container, and the filter visually recognizes the airhole from outside. It is formed with an impossible structure.

As a result, the filter cannot directly and easily come into contact with the outside from the outside, so that the filter is not easily broken by the outside contact, and as a result, the filter is formed including the filter. The waterproof performance of the sealed container itself is not easily impaired,
In other words, it is possible to provide a waterproof electronic device that can stably maintain desired waterproof performance.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that the air hole which connects the inside and the outside of the closed container has both water resistance and air permeability, and the inside of the closed container at the air hole is provided. A filter fixed to the inner wall of the closed container so as to cover a side end portion, and wherein the vent is provided with a structure in which the filter is invisible from the outside to constitute a waterproof electronic device. Has an action that cannot be directly and easily contacted from the outside.

According to a second aspect of the present invention, a vent in the waterproof electronic device according to the first aspect is formed so as to connect the inside and the outside of the closed container to the main body of the closed container. A first ventilation hole having a substantially L-shaped cross section, and a shielding member fixed to an outer wall of the closed container so as to cover a periphery of the first ventilation hole including an outer end of the closed container. 2. A second ventilation hole provided so as to face a side end portion and not to face an inner side end portion of the first ventilation hole inside the closed container, wherein the second ventilation hole is formed. It has the same function as the invention.

According to a third aspect of the present invention, in the waterproof electronic device according to the second aspect, the shielding member is constituted by a name plate on which the name of the waterproof electronic device is described. It has the same function as the invention described in Item 2.

According to a fourth aspect of the present invention, there is provided an air hole which connects the inside and the outside of the closed container, and has both water resistance and air permeability. A waterproof electronic device comprising: a filter fixed to an inner wall of the hermetically sealed container so as to cover the filter; and a structure in which the vent is not directly contacted with the filter from outside via the vent. To form a waterproof electronic device.
And it has an action that cannot be easily contacted. (Embodiment) FIG. 1 is a schematic cross-sectional view of an essential part of an embodiment of a waterproof electronic device according to the present invention. In the drawing, components having the same reference numerals as those in FIG. 2 indicate the same functional components.

As is apparent from the drawing, the present embodiment differs from the conventional example described above with reference to FIG. 2 in that a vent hole 4A for connecting the inside 2 and the outside 3 of the closed container is formed with a vent hole 4A described later. The first ventilation hole 8 and the second ventilation hole 10 are formed.

The first ventilation hole 8 has a step in the exterior housing 1 forming the main body of the closed container together with a shielding member 9 described later, that is, the first ventilation hole 8 has a substantially L-shaped cross section.

The inner end 8A of the first ventilation hole 8 is fixed to the inner wall of the outer casing 1 by the fixing structure of the pressing member 6 and the screw 7, similarly to the conventional example described above with reference to FIG. The filter 5 having both air permeability and air permeability covers the whole.

The outer end 8B of the first ventilation hole 8 is fixed to the outer wall of the outer casing 1 including the periphery of the outer end 8B by, for example, an adhesive, thereby forming a part of the main body of the closed container. Are covered by the shielding member 9 which forms

The shielding member 9 has a second ventilation hole 10 provided so as to face the outer end 8B of the first ventilation hole 8 and not to face the inner end 8A of the first ventilation hole 8. Have.

The specific form of the second ventilation hole 10 will be described in more detail. In the present embodiment, as shown by a dashed line in FIG. The straight line X1 directed toward the opening of the inner side end 8A of the first ventilation hole 8 is formed so as to always reach the step portion 8C of the substantially L-shaped first ventilation hole 8.

As a result, the straight line X1 is connected to the first ventilation hole 8
Does not pass through the opening of the inner end 8A, and of course, the straight line X1 cannot reach the filter 5.

It is needless to say that the straight line X1 can be prevented from passing through the opening of the inner side end 8A of the first ventilation hole 8 even if it does not reach the step 8C. 10 is formed so as to satisfy the condition that the straight line X1 does not reach the filter 5 in relation to the first ventilation hole 8.

For this reason, in the waterproof electronic device of the present embodiment, the second vent 10 and the first vent 8
The filter 5 cannot be visually recognized via.

That is, the inside 2 and the outside 3 of the sealed container in the waterproof electronic device of the present embodiment are formed by the first ventilation hole 8 formed in the exterior housing 1 and the second ventilation hole 8 provided in the shielding member 9.
The filter 5 is connected so that the filter 5 cannot be viewed from the outside 3 by the ventilation hole 4A formed from the ventilation hole 10 and, of course, directly from the outside 3 to the surface of the filter 5 on the outside 3 side. And cannot be easily touched.

The waterproof electronic device according to the present embodiment comprises:
As described above, since the ventilation hole 4A composed of the first ventilation hole 8 and the second ventilation hole 10 is configured so that the filter 5 cannot be visually recognized from the outside 3, the surface of the filter 5 on the outside 3 side is directly in contact. It does not face the exterior 3, and therefore cannot directly, easily and directly contact the surface of the filter 5 on the exterior 3 side from the exterior 3. By doing so, it is possible to prevent the filter 5 from being easily broken.

As a result, the waterproof electronic device according to the present embodiment can stably obtain the desired waterproof performance as a device including the waterproof performance by the filter.

As for the shielding member 9, an independent shielding member 9 is prepared by using a well-known name plate as a plate-like member on which individual information such as a device name and a product number is recorded in various electronic devices. In addition, there is no need to arrange them, and the number of parts can be reduced, and the arrangement space is advantageous.

[0030]

According to the present invention, a filter having both water resistance and air permeability is not easily broken by external contact, and therefore the waterproof performance of a sealed container itself including the filter is impaired. This has the effect of providing a waterproof electronic device capable of stably obtaining a desired waterproof performance as a device including the waterproof performance of a filter without the filter.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a main part showing an embodiment of a waterproof electronic device according to the present invention.

FIG. 2 is a schematic cross-sectional view of a main part showing a conventionally well-known pressure control means for keeping the pressure in a closed container constant.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 exterior housing 2 inside 3 outside 4A ventilation hole 5 filter 8 first ventilation hole 9 shielding member 10 second ventilation hole

Claims (4)

[Claims] 1. A vent hole for connecting the inside and the outside of a closed container, which has both water resistance and air permeability, and is fixed to an inner wall of the closed container so as to cover an inner end of the closed hole in the vent hole. And a vented hole,
A waterproof electronic device formed with a structure in which the filter is invisible from the outside. 2. A cross-section of a vent formed in a main body of the closed container so as to connect the inside and the outside of the closed container with a substantially L-shaped section.
A first ventilation hole having a V-shape, and a shielding member fixed to an outer wall of the closed container so as to cover a periphery of the first ventilation hole including an outer end of the closed container, facing the outer side end. 2. The waterproof electronic device according to claim 1, further comprising: a second ventilation hole provided so as not to face an end of the first ventilation hole on the inner side of the closed container. 3. 3. The waterproof electronic device according to claim 2, wherein the shielding member is a nameplate indicating the name of the waterproof electronic device. 4. A vent hole for connecting the inside and the outside of the closed container, and has both water resistance and air permeability, and is fixed to an inner wall of the closed container so as to cover an inner end of the closed hole in the vent hole. A waterproof electronic device comprising a filter and a filter, wherein the vent is formed with a structure that does not allow the filter to linearly touch the filter from outside through the vent. Electronics.