JPH0231825Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is applicable to amplifiers for CATV systems, for example.
The present invention relates to a die-cast communication equipment housing used for branching switches, distributors, etc.

(Prior Art) As shown in FIG. 3, in a conventional casing of this type, a gasket C was attached only to the peripheral edge of either the main body A or the lid B. Moreover, most of them were attached to main body A.

(Problem to be solved by the invention) Since this type of main body A and lid B are die-cast products, if the gasket C is attached only to either main body A or lid B, the following problems will occur. Ta.

During molding, creases are formed on the main body A and lid B, which form grooves and cracks D as shown in Fig. 4. If this groove or crack D is formed on the lid B without the gasket C attached, when the lid B is placed on the main body A as shown in Fig. 5,
Since the packing C does not penetrate into the grooves or cracks D, rain sometimes blows into the case from the grooves or cracks D, and the parts become susceptible to rust.

If the mold is worn or cracked, burrs may form on the periphery of the molded body A or lid B because hot water flows into it during molding. If body A and lid B with burrs are used as they are, the packing C will be easily damaged or cut, so the burrs are usually removed by polishing. As a result, polishing work was troublesome, and sometimes too much polishing caused the area to retract too much. In this case, there was a problem in that the airtightness deteriorated.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems.

As shown in FIG. 1, the communication device casing of the present invention has joint end surfaces 2a and 4a of a periphery 2 of a die-cast casing body 1 and a periphery 4 of a die-cast lid 3, respectively.
Concave grooves 6a, 6b are formed around the entire circumference of the body 1, and when the lid 3 is placed on the main body 1, the gaskets 5a, 5b overlap each other.
It is characterized by being fitted so as to protrude outward from 6b.

(Function) In the communication device casing of the present invention, as shown in FIG. The gaskets 5a, 5b are formed in the grooves 6a, 6b, respectively.
is inserted, so the peripheral edge 2, as shown in Figure 2.
Even if grooves or cracks D are formed in the joint end surfaces 2a, 4a of the joints 4, the gasket 5 closes them.

Further, the gaskets 5a, 5b are connected to the grooves 6a, 6b.
Since they are fitted into the respective grooves 6a and 6b so as to protrude more, when the lid 3 is placed on the housing body 1, both the gaskets 5a and 5b overlap and come into close contact with each other, and the housing body 1 and the lid 2 are Improves airtightness.

(Embodiment) FIGS. 1 and 2 show an embodiment of the communication device casing of the present invention.

Reference numeral 1 shown in these figures is a housing body, which is made of die-cast aluminum or the like. This housing body 1 has a peripheral edge 2 formed at its open end,
A series of concave grooves 6a are formed on the entire circumference of the joint end surface 2a of the same peripheral edge 2.
is formed. This groove 6a is formed at the same time as the housing body 1 is cast.

Reference numeral 3 shown in FIG. 1 is a lid that covers the housing body 1, and this is also made of die-cast aluminum or the like. Like the case body 1, this lid 3 has a peripheral edge 4 formed at its open end, and a series of grooves 6b are formed around the entire circumference of the joint end surface 4a of the peripheral edge 4. This groove 6b is also formed at the same time as the lid 3 is cast.

5a and 5b shown in FIG. 1 are gaskets made of rubber or plastic. This patchkin 5a, 5
b is formed to be equal to or slightly wider than the width of the grooves 6a, 6b of the main body 1 and lid 3 so as to fit tightly into the grooves 6a, 6b. Also,
In the present invention, the gaskets 5a and 5b are connected to the groove 6.
When the gaskets 5a, 5b are fitted into the concave grooves 6a, 6b,
The respective gaskets 5a, 5b are connected to the respective concave grooves 6a, 6.
It is designed to protrude outward from b. With this, when the lid 3 is placed on the main body 1, both the gaskets 5a,
5b are polymerized and adhered to each other.

The gaskets 5a, 5b are in the grooves 6a, 6b.
It may be fixed with an adhesive or the like at the same time as it is inserted into the interior. Furthermore, since two packings are used in the present invention, the thickness of the packings may be thinner than that of conventional packings.

(Effect of idea) The housing of the present invention has the following various effects.

When the lid 3 is attached to the main body 1, there are two gaskets 5.
Since a and 5b overlap with each other, the airtightness of the casing is improved.

Gaskets 5a and 5b are attached to the grooves 6a and 6b, respectively.
are fitted, so even if a groove or crack D is formed in the main body 1 or the lid 3, the groove or crack D is closed by the gaskets 5a, 5b, and rain will not enter through the groove or crack D. Therefore, airtightness is further improved and rust resistance is also improved.

Since the gaskets 5a and 5b protrude outward from the respective grooves 6a and 6b, even if some burrs are formed on the main body 1 or the lid 3, there is no need to remove the burrs by polishing. This makes the work that much easier, and of course, there is no risk of over-polishing, which would adversely affect the airtightness.

Even if the casting precision of the main body 1 and the lid 3 is rougher than that of conventional casings, they are tightly sealed, making it easier to manufacture the main body 1 and the lid 3, which in turn makes it possible to create inexpensive communication equipment casings. can be provided.

[Brief explanation of the drawing]

Fig. 1 is a vertical perspective view showing an embodiment of the casing of the present invention, Fig. 2 is an explanatory diagram showing an embodiment of the main body of the casing, and Fig. 3 is a longitudinal sectional front view of a conventional casing.
FIGS. 4 and 5 are explanatory diagrams of cracks. 1 is a housing body, 2 is a peripheral edge of the housing body, 2a is a joint end surface, 3 is a lid, 4 is a peripheral edge of the lid, 4a is a joint end surface, 5a and 5b are packings, and 6a and 6b are grooves.

Claims (1)

[Scope of utility model registration request] Joint end surfaces 2 of the periphery 2 of the die-cast housing body 1 and the periphery 4 of the die-cast lid 3
Concave grooves 6a, 6b are formed around the entire circumference of a, 4a,
A communication device characterized in that gaskets 5a and 5b, which overlap each other when the lid 3 is placed on the main body 1, are fitted into the respective grooves 6a and 6b so as to protrude outward from the respective grooves 6a and 6b. housing.