JPH021888Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wireless device casing that has improved drip-proofing, dust-proofing, electrical shielding properties, and manufacturability.

In conventional wireless devices, the casing is drip-proof,
In order to ensure dustproofness, reduce radiation of radio waves outside the case, and prevent radio wave interference between each unit inside the body (hereinafter referred to as shielding), the case 1 and the case lid 2 are connected as shown in Fig. 1. By reducing the lateral fitting gap and reducing the radiation of radio waves to the outside of the casing, and by inserting a rubber packing material 3 between them, the inside and outside of the casing are sealed, drip-proof,
It was made dustproof. Furthermore, in order to shield between each board unit 4 to 9 inside the case, a shield plate 1 corresponding to the size of each unit is installed.
0 to 15 were provided and brought into contact with the housing walls 1a, 1b, . . . 1h.

However, in the case of such a structure, the rubber packing material 3 between the housing 1 and the housing lid 2 does not have conductivity, so although drip-proof and dust-proof properties are ensured, the radio wave casing is No shielding effect occurs regarding extracorporeal radiation. In addition, each board unit 4,
Shield plates 10, 11, . . . 15 are provided to shield between the housing walls 1a,
b, . . . 1h, but it is impossible to reliably contact the entire area, and only local contact is ensured at a plurality of locations. Further, a plurality of shield plates 10 to 15 are required to match the size of each unit 4 to 9, which is disadvantageous in terms of ease of installation and removal and cost.

Next, FIG. 2 shows another conventional example. In FIG. 2, reference numeral 20 denotes a casing made of metal or plastic, and at least the inner surface is subjected to conductive treatment. Reference numerals 20a to 20d each represent an outer peripheral wall formed in a wall shape as a part of the housing. 20e~20h
is a partition wall that is provided in a part of the housing and divides each unit, and a female screw is formed in the center of the partition wall. 20i is a boss that protrudes a part of the housing 20 and is provided with a female thread. Reference numeral 21 denotes a housing lid having a groove, which is provided with one or more mounting holes 21a, and at least its inner surface is subjected to conductive treatment. 22 is a packing material having elasticity and conductivity (for example, conductive rubber), has one or more holes 22a, and is inserted into the groove of the housing lid 21. 23 is a screw for fixing the housing lid 21 to the housing 20 while sandwiching the packing material 22. 24 to 29 are base units, which are connected to the body 20 by screws 30 via bosses 20i.
is held in

In a body with such a structure, the outer peripheral wall 2
The conductive packing material 22 is in close contact with the entire circumference of the fitting surface between 0a to 20d and the housing lid 21, and it is possible to ensure drip-proof and dust-proof properties while also preventing radiation of radio waves to the outside of the housing. Also, each unit 24-29
The conductive packing material 22 is in close contact with the entire gap between the partition walls 21e to 21h that divide the units, and the housing lid 21, which has the dual functions of a shield plate and a housing lid, to ensure reliable shielding between each unit. Effects can be obtained. Furthermore, there is no need for a shield plate for shielding between each unit as in the prior art, making installation and removal easy and advantageous in terms of cost.

However, in the configuration of the above-mentioned other conventional example, the conductive packing material 22 is changed every time the partition wall of the body is changed.
This had the disadvantage that the mold had to be changed. Also, when trying to use commercially available string-shaped shield packing materials, it is impossible to use a single string-shaped shield packing material to fit multiple partition walls, so it is necessary to divide it into multiple pieces. The need arose. In this case, since a sufficient shielding effect cannot be obtained with a conductive rubber material, a material having an elastic rubber-like core material covered with a braided wire is usually used. Generally, in order to prevent the ends of the braided wire from unraveling, the ends are connected or soldered, but this has the problem of requiring many man-hours for processing.

The present invention eliminates such drawbacks of the conventional example,
The object of the present invention is to provide a housing configuration that is simple, easy to process, and highly flexible.

An embodiment of the present invention will be described with reference to FIGS. 4 and 5. These figures show the structure when a string-like material 32 is used as the packing material. That is, two packing insertion grooves 31a and 31b are provided in a part of the housing lid 31.

According to the above structure, as shown in FIG. 4, by using one long string-like packing material 32, it has the advantage that it can be applied to a plurality of partition walls (so-called one-stroke writing is possible). Therefore, even if the number or arrangement of partition walls is changed, it is only necessary to change the length of the packing material and the casing lid 31, which has the effect of being economically inexpensive and requiring less time and effort for adding.

[Brief explanation of the drawing]

Figure 1 is a plan view of the housing of a conventional wireless device;
The figure is a plan view of a housing of a wireless device according to another conventional example.
FIG. 3 is an exploded perspective view of other important parts, FIG. 4 is an exploded perspective view of the main parts of a wireless device casing according to an embodiment of the present invention, and FIG. 5 is a sectional view of the same main parts. . 20... Housing, 20a to 20d... Outer peripheral wall, 2
0e to 20h...Partition wall, 31...Casing lid, 32
...Packing material.

Claims (1)

[Scope of utility model registration request] a casing having a partition wall for partitioning a plurality of units and a surrounding wall, at least a surface of which is conductive; and a casing having a groove at a position corresponding to the partition wall and the surrounding wall; The packing material is composed of a fixed housing lid whose surface is electrically conductive at least, and a string-like packing material that is inserted into a groove of the housing lid and has elasticity and conductivity. A housing for a wireless device, characterized in that two grooves are provided in a part of the insertion groove, and one packing material is inserted into the groove.