JP2872165B2 - Shield case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio unit unit case of a communication apparatus, and more particularly, to a shield case.

[0002]

2. Description of the Related Art FIG. 3 is an exploded perspective view showing a structure of a radio unit transmitting / receiving unit shield case in a conventional communication base station apparatus. This shield case is provided with a screw hole 12 for attaching the connector 5 having the core wire 6 to the side surface in order to prevent radio waves from jumping in and out, and two pairs of opposing sides 10a, 11a are formed at the same height. After the printed circuit board 4 is disposed in the case 3a and the case 3a, the printed circuit board 4 passes through the screw holes 13 of the printed circuit board 4 to be fixed to the case 3a, and is inserted and fixed in the mounting holes 19 of the case 3a. Support 8 with screw
A screw hole 14 at a position corresponding to the position of the threaded support 8, and a rectangular shim 2 formed by cutting four peripheral sides into a comb-shape 15 and corresponding to the position of the screw hole 14 of the shim 2. A rectangular cover 1a having a screw hole 16 at a position to be bent and four sides around which are bent, is inserted from the screw hole 16 of the cover 1a, passes through the screw hole 14 of the shim 2, and is screwed into the threaded support 8. And a screw 9. The two pairs of sides 17a and 18a of the cover 1a are both bent.

FIG. 4 is a cross-sectional view showing a cross section of a connector 5 and a printed board 4 of a conventional shield case, and FIG.
3A shows a cross section. The connection plate 7a for electrically connecting the core wire 6 of the connector 5 and the printed board 4 is
And the core wire 6 of the connector 5.

[0004]

In the above-mentioned conventional shield case, since the four sides around the cover are bent, the mounting area on the side surface of the shield case is cut off, and the area where the connector is mounted is limited. .

Therefore, when the printed board is mounted inside the shield case, the core wire of the connector attached to the case is not arranged at the upper position of the printed board due to the component height mounting area between the circuit surface and the component surface. There is a problem in that it is located below the printed board and requires a lot of man-hours to connect the core wire of the connector with the connection board.

Also, the core wire of the connector cannot be placed on the upper side of the printed board, and if the core wire of the connector comes below the printed board, the space for mounting the connection board is narrow. Of the connector hardly reaches the core wire of the connector, and assembling requires a lot of man-hours.

[0007]

In order to achieve the above object, a shield case according to the present invention comprises two pairs of rectangular shield cases for fixing a printed board of a radio unit transmitting section of a communication base station apparatus. A case in which the height of a pair of facing sides including a side provided with a screw hole for attaching a connector to a side surface is higher than the other pair of sides, and a printed board is disposed in the case. After that, to fix the printed board to the case, penetrate the screw hole of the printed board, insert it into the mounting hole of the case and fix the threaded support, and the screw hole at the position corresponding to the position of the threaded support A rectangular shim formed by cutting the four sides around in a comb shape, and a screw hole at a position corresponding to the position of the screw hole of the shim, and a pair of engagement with other sides of the case. Side The cover of the body is bent rectangle, is inserted from the screw holes in the cover, through the screw hole of the shim, and a screw screwed into the threaded holes support, kneading
A connection board that connects the core wire of the
By arranging the core wire above the printed board
The mounting area for mounting the connector is increased.

[0008]

[0009]

Further, it is preferable that the case is formed by cutting machining or aluminum die casting.

Preferably, the shim is formed of a spring-like ultra-thin sheet metal.

Further, the threaded support is preferably formed by machining a hexagonal bar or a round bar.

[0013] The shield case of the present invention includes a case in which the rising height of a pair of facing sides is higher than the other pair of sides of the two pairs of facing sides around the case, and a case side of the four surrounding sides. A shim with four sides formed in a comb shape is placed between the bent sides of the cover that engages with the other side other than the side where the rising height of the raised is higher, and printed using a threaded support inside the case The board is fixed, and a pair of opposed sides around the case are raised on the side where one of the sides is raised. Is fixed.

[0014] By arranging the connector on the side surface of the case whose rising height is increased in this manner, the core of the connector is arranged above the printed board, and the connecting board for connecting the printed board and the core of the connector is connected. Assembly becomes easy.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exploded perspective view showing the configuration of an embodiment of the shield case of the present invention. In this shield case, the height of a pair of opposing sides 10b including the side provided with a screw hole 12 for attaching the connector 5 to the side surface of the two pairs of opposing sides 10b, 11b is different from that of the other pair of sides 11b. A case 3b formed higher, and a case 3
After the printed board 4 is placed in the case 3b, the screw holes 13 of the printed board 4 are fixed to fix the printed board 4 to the case 3b.
And a threaded support 8 inserted into and fixed to the mounting hole 19 of the case 3b, and a threaded hole 14 at a position corresponding to the position of the threaded support 8, and four peripheral sides are cut into a comb shape and cut 15 are formed. And a screw hole 16 at a position corresponding to the position of the screw hole 14 of the shim 2, and only a pair of sides 18b engaged with the other pair of sides 11b of the case 3b are bent. Rectangular cover 1b and the screw hole 1 of the shim 2 inserted through the screw hole 16 of the cover 1b.
4 and a screw 9 which is screwed into a threaded support 8. The case 3b is formed by cutting machining or aluminum die casting. The shim 2 is formed of an extremely thin sheet metal having spring properties. The threaded support 8 is formed by machining a hexagonal bar or a round bar.

FIG. 2 is a sectional view showing a section of the connector 5 and the printed board 4 of the shield case of the present invention, and shows a section taken along line BB of FIG. A connection plate 7b for electrically connecting the core wire 6 of the connector 5 and the printed board 4 is disposed on the printed board 4 and the core wire 6 of the connector 5, and the printed board 4
And the core wire of the connector 5.
The core wire 6 is arranged on the printed board 4.

More specifically, referring to FIGS. 1 and 2, of the two pairs of facing sides 10b and 11b of the case 3b, the rising height of the pair of facing sides 10b is set higher than the other pair of sides 11b. A case 3b is formed of four sides around a cover 1b formed of a sheet metal and provided with a step.
Other sides 11 other than the side 10b having a higher rising height
b, the pair of sides 18b of the cover 1b are bent, and the other pair of sides 17b are not bent. In order to increase the adhesion between the case 3b and the cover 1b, a shim 2 formed by cutting the four sides of a springy ultra-thin sheet metal into a comb shape and making a cut 15 is arranged so as to be attached inside the cover 1b. Further, the printed board 4 is fixed to the inside of the case 3b using a threaded support 8 formed by machining a hexagonal rod or a round bar, and the cover 1b is fixed to the same position of the threaded support 8 using a screw 9. Is fixed. In addition, the mounting area of the connector 5 is increased by making the rising height of the pair of opposite sides 10b of the four sides of the case 3b higher than the other pair of sides 11b. Thus, the core wire 6 of the connector 5 is arranged so as to be above the printed board 4 mounted inside the case 3b, and the core wire 6 and the printed board 4 are connected by the connection board 7b. Core wire 6 of connector 5
Are arranged above the printed board 4.

[0019]

When the four sides around the cover are bent as in the conventional mounting, the mounting of the connector arranged on the side wall surface of the case is restricted, but the rising of the side surface is restricted as in the shield case of the present invention. When the height is increased, the mounting area for mounting the connector also increases, and the core wire of the connector can be arranged above the printed board.

Therefore, in the high-density mounting, there is an effect that the core wire of the connector can be mounted on the upper side of the printed board without hindering the ease of assembly.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of an embodiment of a shield case of the present invention.

FIG. 2 is a partial sectional view showing an embodiment of the shield case of the present invention, and shows a BB section of FIG. 1;

FIG. 3 is an exploded perspective view showing a configuration of a conventional example.

FIG. 4 is a partial cross-sectional view showing a conventional example, showing an AA cross section in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1a, 1b Cover 2 Shim 3a, 3b Case 4 Printed board 5 Connector 6 Core wire 7a, 7b Connection plate 8 Threaded support 9 Screw 10a, 10b A pair of sides of case 11a, 10b Another pair of sides of case 12-14 Screw Hole 15 Notch 16 Screw hole 17a, 17b A pair of sides of the cover 18a, 17b Another pair of sides of the cover 19 Mounting hole

Claims (4)

(57) [Claims] In a rectangular shield case for fixing a printed circuit board of a wireless unit transmitting section of a communication base station apparatus, a side provided with a screw hole for attaching a connector to a side surface among two pairs of opposite sides. A case in which the height of a pair of opposite sides including the case is formed higher than the other pair of sides, and after the printed board is disposed in the case, the print is performed to fix the printed board to the case. Through the screw hole of the plate, a threaded support inserted and fixed in the mounting hole of the case, has a screw hole at a position corresponding to the position of the threaded support, and cuts the four sides around it into a comb shape A rectangular shim inserted and formed, a screw hole having a screw hole at a position corresponding to the screw hole position of the shim, and only a pair of sides engaged with the other side of the case are bent. A cover having a shape, a screw inserted through the screw hole of the cover, penetrating the screw hole of the shim, and screwed into the support having the screw hole , and a connection connecting the core wire of the connector and the printed board.
Board, and the core wire is disposed between the connection board and the printed board.
The mounting area to attach the connector
A shield case characterized by many things. 2. The shield case according to claim 1, wherein the case is formed by cutting machining or aluminum die casting. 3. The shield case according to claim 1, wherein the shim is formed of a spring-like ultra-thin sheet metal. 4. The threaded support is formed by machining a hexagonal rod or a round rod.
The shield case according to claim 1.