KR101330080B1 - Electric connecting device for portable terminal - Google Patents

Abstract

The present invention relates to an electrical connection device of a portable terminal for electrically connecting a main body having a main board and a sub body having a sub board performing an opening and closing operation on the main body, and corresponding to the main board and the sub board. A connector that is electrically connected to the connector port, a flexible printed circuit that is electrically connected to a part of the connector, the end of which is installed to be doubled, and interposed therebetween when the end of the flexible printed circuit is folded And a conductive printed circuit interposed to be electrically connected to an inner surface of the case frame of the terminal and a flexible printed circuit disposed on an upper portion of the reinforcement plate, and a conductive spray of the terminal case frame directly without a separate reinforcement plate. Since it is grounded, the ground plane can be expanded to achieve a smooth noise , It may implement the maintenance and noise prevention, and electrostatic discharge, which may be the foundation for high-quality device implementation.

Terminal, Ground, Reinforcement Plate, Conductive Foam, Flexible Printed Circuit (FPC), Noise Isolation

Description

ELECTRIC CONNECTING DEVICE FOR PORTABLE TERMINAL

1 is a perspective view of a portable terminal according to an embodiment of the present invention;

2 is a schematic configuration diagram of a portable terminal showing a state in which a connector device according to the present invention is installed;

3 is a cross-sectional view of main parts of a connector device installed in a terminal according to the present invention; And

4 is a block diagram of a flexible printed circuit (FPC) according to the present invention.

The present invention relates to a portable terminal including a main body and a sub body performing a predetermined opening and closing operation on the main body, and in particular, a grounding structure between a connector electrically connecting the main body and the sub body and an inner surface of the terminal case frame. The present invention relates to an electrical connection device of a portable terminal, which is implemented to expand noise smoothly, prevent noisy organic emissions, and prevent static electricity.

With the development of the electronic communication industry, portable terminals are becoming smaller and thinner, and their functions are becoming more diverse. For example, a speaker device capable of implementing melody of various chords is installed, and a color display device of tens of thousands to hundreds of thousands of pixels is implemented. In addition, the music listening function through the MP3 player other than the basic call function is implemented in the terminal, and various game contents using the display device are being provided, and the situation is racing to further develop such a function.

The above-described portable wireless terminal has been introduced with various functions corresponding to the above-described high-definition color display device. For example, the portable wireless terminal can be used as a video communication, a digital camera, or a camcorder. An optical imaging device such as a small lens assembly may be provided in the terminal.

A terminal to which the various functions described above are added is generally a foldable terminal, and includes a main body and a folder which is a sub body opened at an angle on the main body.

Meanwhile, in addition to the folding terminal, a slide type terminal having a slide body which is opened by sliding a predetermined length in the longitudinal direction of the terminal on the main body has also been continuously released. Like the folder type terminal, the slide body can be carried by the size of the main body when the terminal is not used, and the slide body is opened in a similar size to the folder during the call (when the slide body is opened). It can be done.

The above-described folder type terminal and slide type terminal include a main body and a folder or slide body as a sub body, and the components installed in the sub body should be operated by a button manipulation of the main body. In spite of the opening and closing operation, there is an electrical connection means for a smooth electrical connection. In general, a flexible printed circuit (FPC) is used as the electrical connection means. A predetermined connector is installed at both ends of the flexible printed circuit, and a board of each body (main body and sub body) is used. It has a configuration in which a connector port is provided on the electrical connection.

In the above-described connector device, the flexible printed circuit is vulnerable to shielding itself and is electrically connected to the inner surface of the terminal case frame for the purpose of noise blocking, noise induction prevention, and antistatic, since a high-speed data line passes inside. . The inner surface of the case frame may be applied to the ground by the conductive spray. In addition, a conductive reinforcing plate is installed on an upper portion of the connector, and a conductive structure that can contact the case frame is formed on the upper portion, thereby completing a grounding structure.

However, not only the area electrically connected to the reinforcement plate is provided in the connector portion, and the conductive path is formed through the reinforcement plate, and thus, the grounding operation cannot be performed smoothly. There is a problem that the call quality of the terminal is degraded.

In order to solve the problems as described above, an object of the present invention is to provide an electrical connection device of a portable terminal implemented to improve the terminal performance by performing a smooth ground operation.

Another object of the present invention is to provide an electrical connection device of a portable terminal that can be implemented to increase the grounding of the connector device without additional components.

It is still another object of the present invention to provide an electrical connection device for a portable terminal configured to directly challenge a flexible printed circuit directly to an inner surface of a case frame without any intervening means.

Still another object of the present invention is to provide an electrical connection device of a portable terminal configured to implement a high quality terminal by performing a good noise blocking, noise suppression and static prevention by improving the grounding structure of the connector.

In order to solve the above object, the present invention provides an electrical connection of a portable terminal for electrically connecting a main body having a main board and a sub body having a sub board performing an opening and closing operation on the main body. An apparatus, comprising: a connector electrically connected to corresponding connector ports of the main board and a sub board, a flexible printed circuit electrically connected to a part of the connector, the end of which is installed to fold in a double, and the flexible connector When the end of the printed circuit is folded, it comprises a reinforcement plate interposed therebetween and a flexible printed circuit positioned on top of the reinforcement plate and a conductive foam interposed so as to be electrically connected to the inner surface of the case frame of the terminal. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, if it is determined that the gist of the present invention may be unnecessarily blurred, detailed description thereof will be omitted.

In the present invention, the slide type terminal is illustrated and described, but is not limited thereto. For example, by performing a predetermined opening and closing operation in the main body and the main body, it can be applied to various terminals requiring electrical connection means according to the present invention.

1 is a perspective view of a portable terminal 100 according to an embodiment of the present invention, which includes a slide body 120 that performs a sliding operation by a predetermined length in the longitudinal direction of the terminal 100 in the main body 110. A slide type portable terminal is shown.

As shown in FIG. 1, a portable terminal to which a connection device according to the present invention is applied includes a main body 110 and a predetermined length in the longitudinal direction (arrow direction in FIG. 1) of the terminal 100 in the main body 110. It includes a slide body 120 for performing a sliding operation by the length.

The keypad assembly 111 having a plurality of key buttons is installed on the surface visible when the slide body 120 of the main body 110 is opened. The keypad assembly 111 may preferably consist of 3x4 numeric keybuttons. The microphone device 112 is installed below the keypad assembly 111.

The slide body 120 is provided with a display device 121 having a predetermined size. The display device 121 may be a high definition color wide TFT LCD module. The function key buttons including a navigation key button are configured as one keypad assembly 122 under the display device 121, and a speaker device 123 is also provided on the display device 121.

The main body 110 and the slide body 120 described above perform a relatively sliding movement, so the main body 110 and the slide body 120 are electrically connected to each other for data transmission and power supply. The device will be applied. The connection device should be installed so that there is a margin over the flow range of the slide body 120 and at the same time should be able to prevent disconnection due to wear or fatigue even during frequent operation of the slide body 120 for a long time.

In the present invention, a flexible printed circuit (FPC) is used as the electrical connection means, but it may be configured as a single layer or a multilayer as necessary.

2 is a schematic configuration diagram of a portable terminal showing a state in which a connector device according to the present invention is installed, and a main board 10 is mounted inside the main body 110. Although not shown in the main board 10, various electronic functions (electronic function groups) including a control chip according to the use of a terminal may be mounted. In addition, a predetermined printed circuit board (PCB) or flexible printed circuit (FPC) is also provided as a slave board 20 inside the slide body 120, and the LCD as a display device on the slave board 20. Modules (not shown) are mounted. Therefore, a predetermined electrical connection device for power supply by the battery pack installed in the main body 110 and overall control of the slide body 120 by the control chip installed on the main board 10 of the main body 110. Is needed.

In the present invention, a flexible printed circuit 30 having a predetermined width is used as the electrical connection device. Moreover, both ends 31 and 34 of the flexible printed circuit 30 may be electrically connected to the main board 10 and the slave board 20 by a predetermined connector device. That is, if male connectors 32 and 35 are respectively installed at both ends of the flexible printed circuit 30, female connectors 21 and 11 are installed on the boards 10 and 20, respectively. It will be possible to electrically detachable.

3 is a cross-sectional view illustrating main parts of a connector device installed in a terminal according to the present invention, and FIG. 4 is a configuration diagram of a flexible printed circuit (FPC) according to the present invention. 3 and 4 illustrate the connector device installed on the slave board of the slide body, the connector installed on the main board of the main body may also be implemented in the same configuration.

As shown in FIGS. 3 and 4, the flexible printed circuit 30 has an end portion of the connector 31 fixed to a predetermined connector 321 through soldering or the like. At this time, the end of the flexible printed circuit 30 is folded, the lower connection end 322 is electrically fixed to the connector 321, a predetermined between the folded flexible printed circuit 30 The reinforcement plate 324 is interposed. The reinforcing plate 324 may be installed to prevent breakage of the flexible printed circuit 30, and may also be used as a conductive means of the flexible printed circuit 30. Therefore, the reinforcing plate 324 has a configuration interposed between the lower connection end 322 and the upper connection end 323 disposed at the end of the flexible printed circuit 30. Preferably, the reinforcing plate 324 may be installed as a metal plate of a conductive material, in this case, it may be fixed by a method such as bonding by the flexible printed circuit 30 and the conductive adhesive.

On the other hand, the case frame 125 of the terminal is applied to the inner surface by a paint such as a conductive spray, the conductive spray is in a state of being electrically grounded with the ground portion of the slave board 20 and the main board 10. . Therefore, when the flexible printed circuit 30 is electrically connected to the inner surface of the case frame 125, the flexible printed circuit 30 may also be grounded to the ground of the terminal. Therefore, a conductive foam is formed between the upper connection end 323 of the flexible printed circuit 30 and the inner surface of the case frame 125 of the terminal and used as a conductive means. Accordingly, the flexible printed circuit 30 directly contacts the conductive foam 325, and the conductive foam 325 is electrically connected to the inner surface of the case frame 125, thereby providing a ground structure through a simple path without a complicated path. To have.

Apparently, there are many ways to modify these embodiments while remaining within the scope of the claims. In other words, there can be many other ways in which the invention may be practiced without departing from the scope of the following claims.

The flexible printed circuit used as the electrical connection device of the terminal according to the present invention is grounded directly with the conductive spray of the terminal case frame without going through a separate reinforcement plate, so that the ground plane can be expanded to smoothly block noise and prevent noise. Electrostatic discharge and the like can be implemented, which can be a foundation for high quality terminal implementation.

Claims (5)

An electrical connection apparatus of a portable terminal for electrically connecting a main body having a main board and a sub body having a sub board performing an opening and closing operation on the main body, A connector electrically connected to the corresponding connector ports of the main board and the sub board; A flexible printed circuit having a portion electrically connected to the connector, the flexible printed circuit having an end thereof folded in a double manner; A reinforcing plate interposed therebetween when the ends of the flexible printed circuit are folded; And And a conductive foam interposed to be electrically connected to a flexible printed circuit positioned on the reinforcement plate and the conductive inner surface of the case frame of the portable terminal. The method of claim 1, The reinforcing plate of the portable terminal, characterized in that the conductive metal plate. The method of claim 1, The conductive inner surface of the case frame is coated with a conductive spray, grounded to the ground of the portable terminal, the conductive foam is electrically connected to the portable terminal, characterized in that the conductive spray is electrically connected. 3. The method of claim 2, And the reinforcing plate is installed to be bonded by the flexible printed circuit and the conductive adhesive. In a portable terminal, First board; A second board installed to be spaced apart from the first board; A flexible printed circuit for electrically connecting the second board and the first board by a predetermined connector; Reinforcing plates interposed therebetween to fold each end of the flexible printed circuit in double; And a conductive foam interposed between the flexible printed circuit positioned outside the reinforcement plate and the conductive inner surface of the case frame of the portable terminal to electrically connect the flexible printed circuit and the conductive inner surface. Portable terminal.

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