KR20100020579A - Shield can of mobile phone - Google Patents

Abstract

PURPOSE: A shield can of a portable terminal is provided to prevent the wireless performance degradation to reduce the manufacturing cost and manufacturing time by uniformly grounding the rear case and key PCB. CONSTITUTION: A partition(110) divides the space accepting the angular chip of the main board. A plurality of embossing projection(130) for the rear case contact strengthening is formed in the site contacting the end rim of the battery receiver of the rear case in which the battery is put into the constant interval. A plurality of embossing projections for reinforcing contact with a key PCB(140) is formed into the constant interval in order to be touched with the opposite surface of the side in which the embossing projection for the rear case contact strengthening prepares the key PCB. A plurality of compressed embossing projections(150) burning with battery is included in the site contacting battery.

Description

Shield can of mobile terminal {SHIELD CAN OF MOBILE PHONE}

The present invention relates to a shield can of a portable terminal, and more particularly, to a shield can interposed between a rear case of a portable terminal and a key PCB to shield electromagnetic interference or radio frequency interference.

In general, a mobile terminal includes a main board (Main board) consisting of a plurality of chips mounted on a printed circuit board, the electronic circuit of the main board is electromagnetic interference (EMI) or radio frequency interference (RFI: Radio It is sensitive to Frequency Interference. Therefore, various types of shielding structures have been disclosed to block such interference and protect circuit components, and shield cans are used as an example of such shielding structures.

1 is a perspective view showing an example of a shield can according to the prior art. As shown in FIG. 1, the shield can 30 according to the related art is interposed between a rear case 20 and a key PCB 40 of the portable terminal.

One side of the shield can 30 is provided with a partition wall 31 for dividing the receiving space corresponding to the position of each chip of the main board (not shown), thereby preventing interference by electromagnetic waves or radio frequencies emitted by each chip. This prevents equipment malfunction or component damage that may be caused by such interference.

The other side of the shield can 30 is provided with a battery seating portion 32 to which the battery 10 is inserted into the battery receiving groove 22 provided in the rear case 20 of the portable terminal.

On the other hand, recently, the antenna of the portable terminal is installed inside the case, a micro current flows in the case of the conductive material, the case also acts as an antenna. Therefore, the above-mentioned rear case 20 should also be grounded to the main board (ground), otherwise, if floating (floating), will result in a decrease in wireless performance. In addition, the key PCB 40 should also be grounded to the main board.

By the way, in the case of the shield can 30 according to the prior art described above, the ground connection of the rear case 20 and the main board is mainly a metallic boss for fastening the shield can 30 and the rear case 20. As partly made by (not shown), not only such a ground connection is not sufficient, but also such a ground according to manufacturing tolerances of the shield can 30 and the rear case 20. ) There has been a problem that it is difficult to expect stable quality of the future terminal, which is a finished product, due to problems such as uneven connection. In addition, a separate gasket or a conductive tape 42 is required for ground connection between the key PCB 40 and the main board, and it is necessary to attach them manually, thereby increasing manufacturing costs and manufacturing. There has been a problem that process delay occurs.

The present invention has been made to overcome the drawbacks of the prior art as described above, manufactured in the components by strengthening the electrical connection by the contact of the shield can, the rear case and the key PCB without the need for a separate gasket or conductive tape. Even if there are some tolerances, the rear case and the key PCB can be grounded more efficiently and uniformly to the main board, thereby reducing the manufacturing cost and reducing the manufacturing time while preventing wireless performance degradation of the portable terminal. The technical problem is to provide a shield can of a portable terminal.

The shield can of the portable terminal according to the present invention for achieving the above technical problem is to shield the electromagnetic interference or radio frequency interference interposed between the rear case and the key PCB of the portable terminal, each chip of the main board is accommodated And a plurality of rear case contact reinforcing embossing protrusions formed at predetermined intervals at a portion contacting the edge of the battery housing portion of the rear case in which the battery is accommodated. A plurality of key PCB contact reinforcement embossing protrusions are formed at regular intervals so as to contact the key PCB on the opposite side of the surface provided with two rear case contact reinforcement embossing protrusions.

A plurality of compressed embossing protrusions pressed by the battery may be further provided at a portion in contact with the battery.

The plurality of key PCB contact reinforcement embossing protrusions are provided to be arranged on the opposite surface along a pattern formed by the plurality of rear case contact reinforcement embossing protrusions.

The plurality of key PCB contact reinforcement embossing projections and the plurality of rear case contact reinforcement embossing projections are arranged to be staggered with each other.

According to the shield can 100 of the portable terminal according to the present invention having the configuration as described above, the plurality of rear case contact strengthening embossing projection 130, a plurality of key PCB contact strengthening embossing projection ( 140) and / or through a plurality of compressed embossing protrusions 150, electrical contact due to the contact between the shield can 100, the rear case 200 and the key PCB 300 without the need for a separate gasket or conductive tape. By strengthening the connection, the rear case 200 and the key PCB 300 can be grounded to the main board more efficiently and uniformly even though there are some manufacturing tolerances in the components. While reducing the wireless performance of the terminal there is an advantage that can be pursued to reduce the manufacturing cost and manufacturing time.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the shield can of a mobile terminal according to the present invention. FIG. 2 is a perspective view of a shield can of the portable terminal according to the present invention, and FIGS. 3A and 3B are partial plan and rear views of the shield can shown in FIG. 2, respectively, and FIG. 4 is a shield can of FIG. 5 is a perspective view of the rear case and the key PCB to be connected, and FIG. 5 is a side view of the shield can shown in FIG. 4 coupled with the rear case and the key PCB.

2 to 5, the shield can 100 of the portable terminal according to the present invention is basically interposed between the rear case 200 and the key PCB 300 of the portable terminal, To shield radio frequency interference.

The shield can 100 includes a partition wall 31 for partitioning a space in which the chips of the main board are accommodated to block interference by electromagnetic waves or radio frequencies emitted by the chips of the main board. This prevents malfunction of the device or damage to components that may be caused by such interference, and is connected to the main board to ground.

As shown in FIG. 2, the shield can 100 of the portable terminal according to the present invention has a predetermined area in contact with the edge of the battery receiving portion 212 of the rear case 200 in which the battery 250 is accommodated. It characterized in that it comprises a plurality of rear case contact strengthening embossing projections 130 formed at intervals. Reference numeral 210 denotes a battery accommodating part provided in the rear case 200, and 120 denotes a battery seating part of the shield can 100.

An antenna (not shown) is installed inside the rear case 200. Since a small current flows through the rear case 200 made of a conductive material, the rear case 200 also operates as an antenna. It must also be grounded to the main board, otherwise floating will result in poor wireless performance. As described with reference to FIG. 1, in the case of the shield can 30 according to the related art, the shield can 30 and the rear case 20 are fastened through a metallic boss not shown to partially secure the rear of the rear surface. The case 20 is grounded to the main board, but such a ground connection is not sufficient, and according to the manufacturing tolerances of the shield can 30 and the rear case 20, There was a problem that the ground connection was not uniform.

However, in the case of the shield can 100 of the portable terminal according to the present invention, when it is fastened to the rear case 20 through the metallic boss, the pressure contact with the edge of the battery receiving portion 212 of the rear case 20. Through the plurality of rear case contact reinforcing embossing projections 130, the rear case by strengthening the electrical connection by the contact between the rear case 200 and the shield can 100 without the help of a separate gasket or conductive tape. Although manufacturing tolerances exist in the 200 and the shield can 100, the rear case 200 may be connected to the main board and the ground more efficiently and uniformly.

In addition, the shield can 100 of the portable terminal according to the present invention comprises a plurality of shields formed at regular intervals so as to contact the key PCB 300 on the opposite side of the surface on which the plurality of rear case contact reinforcement embossing protrusions 130 are provided. An embossing protrusion 140 for strengthening the key PCB contact is provided. Therefore, when the shield can 100 is fastened with the key PCB 300 through a fastening means (not shown), the shield can 100 is more efficient with the key PCB 300 through the embossing protrusions 140 for strengthening the key PCB contact. The key PCB 300 can be grounded more efficiently and uniformly with the main board by strengthening the electrical connection.

Here, the plurality of key PCB contact reinforcement embossing protrusions 140 may include a surface of the rear case contact reinforcement embossing protrusions 130 formed along the pattern formed by the plurality of rear case contact reinforcement embossing protrusions 130. It is arranged to be arranged on the opposite side. As such, the plurality of key PCB contact reinforcement embossing protrusions 140 and the plurality of rear case contact reinforcement embossing protrusions 130 are arranged on the same line so that the shield can 100 is connected to the rear case 200. The embossing projections for strengthening the plurality of key PCB contacts by allowing the contact pressing force applied when the key PCB 300 is engaged to work along the same line, that is, the pattern formed by the plurality of rear case contact strengthening embossing projections 130 ( 140 and the plurality of rear case contact reinforcing embossing projections 130 through the contact between the shield can 100 and the rear case 200 and the key PCB 300 to make the electrical connection more efficiently. .

On the other hand, the shield can 100 according to the present invention having the configuration as described above can be made to have a more easy and uniform quality by manufacturing a metal plate by pressing, in such a case, the plurality of key PCB The contact reinforcing embossing protrusion 140 and the plurality of rear case contact reinforcing embossing protrusions 130 are formed to be staggered with each other.

In addition, the shield can 100 of the mobile terminal according to the present invention includes a plurality of compressed embossing protrusions provided to be pressed by a portion of the battery 250 in contact with the battery 250, that is, the battery seating portion 120. 150 may be further provided. Since the battery seating part 120 of the shield can 100 is in contact with the battery 250, the plurality of compressed embossing protrusions 150 are formed to be pressed by the battery 250, thereby providing the pressing force. By the plurality of key PCB contact strengthening embossing protrusion 140 and the key PCB 300 can be in close contact, through which the key PCB 300 and the main board more efficiently and uniformly ground (ground) can be connected.

As described above, the shield can 100 of the mobile terminal according to the present invention includes the plurality of rear case contact reinforcement embossing protrusions 130, the plurality of key PCB contact reinforcement embossing protrusions 140, and the plurality of compressed embossings. Protrusion 150 is provided to the components by strengthening the electrical connection by the contact of the shield can 100, the rear case 200 and the key PCB 300 without the need for a separate gasket or conductive tape Even if there are some manufacturing tolerances, the rear case 200 and the key PCB 300 can be more efficiently and uniformly connected to the ground with the main board, thereby preventing the wireless performance deterioration of the portable terminal while manufacturing. Cost reduction and manufacturing time can be pursued.

As described above, in the detailed description of the present invention, a preferred embodiment of the present invention has been described, but those skilled in the art to which the present invention pertains various modifications can be made without departing from the scope of the present invention. Of course. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

1 is a perspective view showing an example of a shield can according to the prior art,

2 is a perspective view of a shield can of a portable terminal according to the present invention;

3A and 3B are partial plan and rear views, respectively, of the shield can shown in FIG. 2;

4 is a perspective view of the shield can shown in FIG. 2 and a rear case and a key PCB connected thereto;

FIG. 5 is a side view of the shield can shown in FIG. 4 combined with a rear case and a key PCB.

** Description of the symbols for the main parts of the drawings **

110: separating wall 120: battery seat

130: embossing projection for rear case contact strengthening

140: Embossing projection for strengthening key PCB contact

150: Pressed embossing projection

200: rear case 210: battery compartment

212: battery compartment edge 250: battery

300: key PCB

Claims (5)

In the shield can interposed between the rear case of the mobile terminal and the key PCB to shield electromagnetic interference or radio frequency interference, A partition wall for partitioning a space in which each chip of the main board is accommodated; It is provided with a plurality of rear case contact reinforcement embossing projections formed at regular intervals in a portion in contact with the edge of the battery housing portion of the rear case in which the battery is accommodated, And a plurality of key PCB contact reinforcing embossing protrusions formed at regular intervals so as to be in contact with the key PCB on a surface opposite to a surface on which the plurality of rear case contact reinforcing embossing protrusions are provided. The method of claim 1, And a plurality of compressed embossing projections pressed by the battery at a portion in contact with the battery. The method according to claim 1 or 2, The plurality of key PCB contact reinforcement embossing projections are arranged to be arranged on the opposite surface along a pattern formed by the plurality of rear case contact reinforcement embossing projections. The method of claim 3, wherein And the plurality of key PCB contact reinforcement embossing projections and the plurality of rear case contact reinforcement embossing projections are arranged to be staggered with each other. The method of claim 4, wherein The shield can of the portable terminal, characterized in that formed by pressing a metal plate.

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