JPH0923072A - Waterproof structure of cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure which can maintain a constant waterproof performance against the deformation of a case and the application of an external force, in a waterproof structure of a portable radio cabinet. SOLUTION: This waterproof structure is constituted of a first case 1 and a second case 3. The first case 1 is equipped with a packing 2 having a lip 2a formed of rubber on the whole inner periphery of the case, and the second case 3 is equipped with a U-shaped trench 3a into which the packing 2 is inserted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for a casing of, for example, a portable wireless device.

[0002]

2. Description of the Related Art FIG. 4 is a cross-sectional view showing a structural example of a housing of a conventional portable wireless device. In the figure, a case 4 has a rubber packing 5, and the other case 6 has a groove 6a for receiving the rubber. When the case 4 and the case 6 are combined and a force is applied in the vertical direction, the packing 5 is compressed and a waterproof effect is obtained. However, this waterproof performance is
Since it depends on the compression amount of the packing 5, in order to satisfy a certain waterproof performance in the entire apparatus, it is necessary to make the vertical pressure applied to the packing 5 uniform over the entire circumference of the case, which is difficult to realize. It was Furthermore, when the entire case is deformed by an external force, the amount of deformation is the packing 5
There is a drawback that a slight amount of deformation of the case deteriorates the waterproof performance because it directly affects the pressure applied to the.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate these drawbacks and provide a waterproof structure for a casing which can always keep the waterproof performance of the casing constant.

[0004]

In order to achieve the above-mentioned object, the present invention comprises a first case and a second case, and the first case has a rubber lip packing on the entire inner circumference of the case. , The second case is U where the packing is inserted.
This is a case structure having a groove.

[0005]

The operation of the present invention will be described. The pressure in the left-right direction required for the packing (pressure on the inner wall surface of the U groove).
Is determined by the size of the U-groove in which the packing is inserted,
Even if an external force is applied, the pressure on the inner wall surface of the U groove in the packing does not change.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view showing a housing structure of a portable wireless device which is an embodiment of the present invention. In the figure, a rubber packing 2 is provided on the entire inner circumference of the case 1, and the packing 2 has a lip 2a for obtaining a uniform waterproof effect. The other case 3 is provided with a U groove 3a in which the packing 2 is inserted. These two cases 1, 3
When the packing 2 is inserted, the packing 2 is inserted into the U groove 3a, and when the lips 2a on the packing 2 hit the left and right inner wall surfaces in the U groove 3a, the self-sealing effect of the lip 2a prevents water from entering at this portion. be able to.

2 to 3 are enlarged views of the state of the packing portion when an external force is applied. In FIG. 2, even if the case 1 is deformed in the left-right direction, the packing 2
Is rubbery, the root portion absorbs this amount of deformation and prevents the lip 2a from lowering the force applied to the inner wall surface of the U groove 3a. Therefore, the lip 2a
Since it is housed in the U-shaped groove 3a almost in the same state as before the deformation, the waterproof property is not impaired.

Further, as shown in FIG. 3, even if the case 1 is deformed in the vertical direction, the state in which the lip 2a is in contact with the inner wall surface of the U groove 3a does not change, so that the waterproof property is continuously maintained. be able to.

In the above embodiments, the portable wireless device has been described as an example, but the present invention is not limited to this.
It can be applied to a general housing structure of an electronic device to which an external force is applied.

[0010]

As described above, according to the present invention, in the case structure of a portable wireless device or the like to which external force such as strike is easily applied, the waterproof performance of the case can be kept constant even if external force is applied. Yes, the effect is remarkable.

[Brief description of drawings]

FIG. 1 is a sectional view showing a housing structure according to an embodiment of the present invention.

FIG. 2 is a partially enlarged view of an embodiment of the present invention.

FIG. 3 is a partially enlarged view of an embodiment of the present invention.

FIG. 4 is a cross-sectional view showing an example of a housing structure of a conventional portable wireless device.

[Explanation of symbols]

1, 3, 4, 6 Case 2 Packing, 2a Lip (self-sealing packing) 3a
U groove.

Claims (2)

[Claims] 1. A first case and a second case, wherein the first case is provided with a rubber packing with a lip on the entire inner circumference, and the second case is a U into which the packing is inserted. Waterproof structure of the case with a groove. 2. The waterproof structure for a casing according to claim 1, wherein the casing is a casing for a portable wireless device.