JP2954030B2 - Structure of waterproof portable radio - 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 portable radio device.

[0002]

2. Description of the Related Art The structure of a conventional waterproof portable radio of this type will be described with reference to the drawings.

FIG. 2 is an exploded perspective view showing an example of the structure of a conventional waterproof portable radio, FIG. 3 is an exploded sectional view of a portion A in FIG. 2, and FIG. FIG. 5 is an enlarged sectional view of the conventional annular packing shown in FIG.

2 to 5, this prior art shows the contents disclosed in Japanese Utility Model Laid-Open No. 4-134882, in which a housing engaging portion 104 of a rear housing portion 103 is provided with ribs 105, 106 is formed into a uniform shape, and the ribs 105, 1
At 06, a concave groove 107 is formed as shown in FIG. As shown in FIG. 4, an engaging rib 9 and an abutting portion 110 are integrally formed on the outer periphery of the housing engaging portion 108 of the front housing portion 102 over the entire circumference.

[0005] The rubber annular packing 111 shown in FIG.
For example, a synthetic rubber is molded so as to be inserted into the concave groove 107, and the metal plate 112 is simultaneously insert-molded as shown in the sectional view of FIG.

The rubber annular packing 111 has an oval cross section, a lateral dimension (n) substantially equal to the lateral dimension of the concave groove 107 of the rear casing 103, and a vertical dimension (m) is concave. The groove 7 is formed slightly larger than the vertical dimension.

The metal plate 112, which is insert-molded in the rubber annular packing 111, is inserted over the entire circumference or partially inserted only in the longitudinal direction of the packing 111 to reduce the deformation of the packing 111. Can be prevented. The shape of the metal plate 112 is not limited to a plate shape, but may be a thin line.

The above-mentioned front casing 102 and rear casing 103
To engage via the rubber annular packing 111,
Concave groove 1 of housing engaging portion 104 in rear housing portion 103
07, the concave groove 107 for the metal plate 112 and the rubber annular packing 111 having the same shape and kept intact are inserted, and then the housing engaging portion 1 in the front housing portion 102 is inserted.
08 is engaged with the housing engaging portion 104 so that the packing 111 slightly protruding from the concave groove 107 is brought into contact with the contact portion 1.
10 and is uniformly pressed over the entire circumference.
Abuts on the side surface of the rib 106 and is fitted.

As a result, the entire periphery of the fitting portion between the front casing 102 and the rear casing 103 is sealed, and a waterproof effect is obtained.

[0010]

The structure of the conventional waterproof portable radio has the following problems.

The first problem is that it is not possible to check for missing packing at the time of inspection after assembly.

The reason is that it is important to check for missing packing for fulfilling the waterproof function in the inspection process, but the packing is built into the housing and cannot be checked from the outside. .

A second problem is that the cost of the packing is high.

The reason is that a metal plate is incorporated in the inside to make the packing rigid, so that the number of parts and the cost of members are higher than those of a normal rubber packing.

A third problem is that the packing is not reusable.

The reason is that the metal plate is contained in the rubber as described in the second problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a structure of a waterproof portable wireless device capable of improving the reliability of the waterproof function, reducing the cost of the packing and reusing the packing in view of the above problems. .

[0018]

According to the present invention, there is provided a waterproof portable radio device according to the present invention, wherein the first casing and the second casing are fitted with each other. Only the housing has a groove around the entire periphery of the fitting surface with the second housing, and the first
The fitting surface of the housing has a different height inside and outside the groove, and an insertion portion incorporated in the groove of the first housing, and a portion where the first housing and the second housing fit together. And a packing including a belt portion extending to the outer periphery of the housing so as to hermetically cover the outer periphery of the housing, and a connecting portion for coupling the insertion portion and the belt portion. Further, the insertion portion is the second
A rib is provided on a fitting surface with the housing of the above, and the entire packing is made of an elastic member.

[0019]

[0020]

Next, the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.
(A) is a perspective view showing a waterproof portable wireless device to which the present embodiment is applied, (b) is a cross-sectional view taken along the line AA of (a), and (c) is a detailed cross-sectional view of a B part of (b). It is.

Referring to FIG. 1, a waterproof portable radio device 10 to which the present embodiment is applied has a housing 1 and a housing 2 fitted to each other, and the entire periphery of the fitted portion is covered with an annular packing 3 made of rubber. It is composed.

On the housing 1 side, a groove 1a is formed on the entire periphery of the fitting surface that fits with the housing 2, and a convex portion c of the groove 1a inside the housing 1 is formed.
The outer surface of the housing 1 and the protrusion 1b shorter than the protrusion 1c make the housing 2 and the fitting surface face in a concave shape.

The housing 2 has a three-step fitting surface of surfaces 2b and 2c centered on a surface 2a that covers the groove 1a with respect to the concave shape of the fitting surface of the housing 1.

The packing 3 is inserted into the groove 1a and has an insertion portion 3a having a rib 3c facing the surface 2a, a belt portion 3d for closing a fitting surface of the housings 1 and 2, an insertion portion 3a and the belt portion 3
and d has a connecting portion 3b which is connected between the surfaces 1b and 2b.

Next, a waterproofing method in this application example will be described with reference to FIG.

When the housing 1 and the housing 2 are fitted to each other, a groove 1a is formed on the entire circumference of the fitting surface of the housing 1. The insertion portion 3a of the annular packing 3 made of rubber is incorporated into the groove 1a of the housing 1. At this time, the convex portion 1b of the housing 1 and the connecting portion 3b of the packing 3 are fitted to each other, and the packing 3 is assembled so as to cover the housing 1, and the packing 3 is easily displaced.
Can be incorporated. Further, the packing 3 has a rib 3c formed on the entire circumference, and when the housing 1 and the housing 2 are fitted,
The surface 2 a of the housing 2 crushes the rib 3 c of the packing 3.
Thereby, the fitting portion between the housing 1 and the housing 2 is completely sealed, and a waterproof effect can be obtained.

Further, by the belt portion 3d of the packing 3,
Since the external fitting portion between the housings 1 and 2 is covered over the entire circumference, the waterproof effect is further enhanced.

As described above, in the present embodiment,
Since the packing 3 can be seen from the exterior of the housings 1 and 2, inspection can be easily performed. Further, since the packing 3 is a molded article made of rubber only, the waterproofness is further improved, and the packing 3 is prevented from slipping and falling when being held in a hand. It also plays a role in alleviating shocks and preventing damage when it is lost.

[0030]

As described above, according to the present invention, in the structure of the waterproof portable wireless device in which the first housing and the second housing are fitted, the first housing and the second housing are combined. By having a band-shaped packing of an elastic member that is sealed inside and covers the outer peripheral front surface of the fitting part that is incorporated into the fitting inside,
The following effects can be obtained.

The first effect is an improvement in the reliability of the waterproof function.

The reason for this is that the packing can be checked at a glance from the external appearance, and the packing covers the fitting portion between the housings from the external appearance.

The second effect is cost reduction.

The reason is that the packing is a molded product of only the elastic member and has a shape that is easy to incorporate.

The third effect is that resources can be reused.

The reason is, as described in the second effect,
This is because the molded article is made of only the elastic member.

The fourth effect is that the drop strength can be improved and the anti-slip effect can be obtained.

The reason is that the entire circumference of the fitting portion of the first and second housings is covered with packing, so that the shock at the time of dropping is buffered, and the packing functions as a grip when held in the hand. Because it fulfills.

[Brief description of the drawings]

1A and 1B show an embodiment of the present invention, and FIG. 1A is a perspective view showing a waterproof portable wireless device to which the embodiment is applied;
(B) is a sectional view taken along the line AA of (a), (c) is a sectional view of B of (b).
It is a detailed sectional view of a part.

FIG. 2 is an exploded perspective view showing an example of the structure of a conventional waterproof portable wireless device.

FIG. 3 is an exploded sectional view of a portion A in FIG. 2;

FIG. 4 is an enlarged sectional view of a housing engaging portion of the conventional example shown in FIG.

FIG. 5 is an enlarged sectional view of the conventional annular packing shown in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 1a Groove 1b, 1c Convex part 2 Housing 2a, 2b, 2c Surface 3 Packing 3a Insertion part 3b Connecting part 3c Rib 3d Belt part 10 Waterproof portable radio

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 5/06 H05K 5/02 H04Q 7/32 H04M 1/02

Claims (2)

(57) [Claims] In a structure of a waterproof portable wireless device in which a first housing and a second housing are fitted, in the structure of the first housing ,
It has a groove all around the fitting surface and viewed the second housing, the first
The height of the fitting surface of the housing 1 is different inside and outside the groove,
An insertion portion incorporated in the groove of the first housing; and a belt portion extending to the outer circumference of the housing to hermetically cover the outer circumference of a portion where the first housing and the second housing are fitted. ,
A structure of a waterproof portable wireless device, further comprising a packing including a connecting portion for connecting the insertion portion and the belt portion. 2. The waterproof portable radio device according to claim 1, wherein the insertion portion has a rib on a fitting surface with the second housing, and the entire packing is made of an elastic member. .