KR20080098942A - Ground device for folder type portable terminal - Google Patents

Abstract

A grounding device of a folder type portable phone is provided to reduce the faults in the performance of a specific absorption rate and radiation of an antenna. A grounding device of a folder type portable phone(100) including a main body(110) and a folder(120) which is installed so as to be opened and closed centering on a certain axis as having a predetermined angle from the main body comprise the followings: a PCB(114) installed the main body or/and the folder as including a ground it is installed at folder; a hinge unit(10) which is installed on a rotation shaft through which the main body and folder are connected to enable the folder to be opened and closed; and a connection unit which electrically connects the ground of PCB and the hinge unit by being contacted with the outer surface of a hinge pin.

Description

Grounding device for folder type portable terminal {GROUND DEVICE FOR FOLDER TYPE PORTABLE TERMINAL}

1 is a perspective view showing a general folder type portable terminal;

2 is a perspective view schematically showing a folder type wireless terminal for ground connection using a hinge device according to the present invention;

3 is an exploded perspective view of the hinge device according to the present invention;

4 is a cross-sectional view schematically showing a ground connection state using the hinge device of FIG.

5A and 5B are cross-sectional views schematically illustrating a state in which a first connecting means is connected to a hinge device according to various embodiments of the present disclosure as viewed in the direction B of FIG. 3;

6A and 6B are cross-sectional views schematically illustrating main parts in which a second connecting means is connected to a hinge device according to various embodiments of the present disclosure as viewed in the direction B of FIG. 3; And

7a and 7b are perspective views schematically showing an embodiment in which the second connecting means is connected in different ways to the hinge device according to the present invention;

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grounding device for a folder type portable terminal, and more particularly to a grounding device for a folder type portable terminal for reducing electromagnetic wave absorption rate and improving antenna radiation characteristics of a terminal by using a hinge device as an intermediary. will be.

Recently, as the harmfulness of electromagnetic waves is widely known, there is a tendency to tighten regulations on the emission of electromagnetic waves in portable wireless terminals. In order to reduce the emission of electromagnetic waves, a method of attaching an electromagnetic wave absorber to an antenna or an antenna feeding part or changing a pattern of ground formed inside the terminal injection part is used to move or offset the location where electromagnetic waves are concentrated. In particular, the use of a metallic material in the hinge device of the folder type terminal reduces the electromagnetic wave absorption rate, and in consideration of the radiation characteristics of the antenna to electrically connect the LCD ground in the folder and the main ground in the main body to the metallic hinge device. It is trying to solve.

However, at this time, the hinge device is connected at a plurality of contacts at the time of electrical connection with each ground, so that a poor connection is likely to occur at the contact. In addition, since a smooth movement is necessary due to the characteristics of the hinge device, which is a mechanical structure, a lubricating liquid is used in place. In particular, a rotational and mechanically contacting part such as a shaft is required to reduce friction. However, at this time, the lubricating liquid may flow out of the metallic hinge device to interfere with the electrical connection with the ground. Therefore, an error may be generated in a predetermined inductive direction for reducing the electromagnetic wave absorption rate and improving antenna radiation characteristics.

In order to solve the above problems, an object of the present invention is to ground the folder-type portable terminal using a hinge device that can reduce the number of contacts that are a bad electrical connection generated when the main body and the folder is connected to the ground To provide a device.

Another object of the present invention is to provide a grounding device of a folder type portable terminal that can reduce the occurrence of a connection failure due to the lubricating fluid of the hinge device generated during the electrical connection between the hinge device and the body and the ground of the folder.

In order to solve the above object, the present invention relates to a grounding device of a folder type portable terminal including a folder which is installed to be opened and closed about a certain axis and has a predetermined angle in the main body, the main body and / and A hinge device installed on a folder and installed on a rotating shaft connected to the main body and the folder, the hinge device providing a feeling of opening and closing of the folder and connecting means for electrically connecting the hinge device and the PCB, The connecting means is in contact with the outer surface of the conductive hinge pin which is installed to penetrate the hinge device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. If it is determined that the gist of the present invention may be obscured, the detailed description thereof will be omitted.

1 is a perspective view showing a general portable wireless terminal, in particular a perspective view of a folder type portable wireless terminal 100.

As shown in FIG. 1, the general folder type portable wireless terminal 100 may be opened and closed by rotating the main body 110 and the folder 120 by a hinge device (10 of FIG. 2) not shown.

A plurality of keypads 111 and a talker 112 are installed on an upper portion of the main body 110, and side hinge arms 113 are installed on both sides of upper ends thereof. In addition, a display device 122 is exposed at an upper portion of the folder 120, and a hydration unit 121 is installed at an upper portion thereof.

As shown in FIG. 2, the folder 120 has an LCD PCB 124 having an LCD ground (not shown), and the main body 110 has a main PCB 114 having a main ground (not shown). . Side hinge arms 113 are formed on both sides of the upper end of the main body 110, and a center hinge arm 123 rotatably connected to the side hinge arms 113 of the main body 110 is formed in the folder 120. . The side hinge arm 113 or the center hinge arm 120 is provided with a hinge device 10 having a predetermined accommodating portion 61. Further, the hinge device 10 and the respective grounds are electrically connected to be described later. Configure

As shown in FIG. 3, the hinge device 10 has a predetermined housing 61 and a hinge housing 60 having predetermined holes 62 and 65 at both ends thereof, and a housing of the hinge housing 60. A hinge shaft 30, a hinge cam 40, a hinge spring 50, and a hinge pin 20 fixed through the hinge shaft 30 and the hinge cam 40 sequentially received in the 61, and It is composed of a predetermined fixing means for fixing the hinge pin 20 so as not to escape.

The hinge shaft 30 is composed of a shaft portion 31 accommodated in the accommodating portion 61 of the hinge housing 60 and a dummy 31 integrally formed to extend from the shaft portion 32. The shaft portion 32 has a corresponding raised portion 33 to be engaged with the valley 41 of the hinge cam 40. At this time, the shaft portion 32 is accommodated in the accommodating portion of the hinge housing 60 is installed so as to enable its own rotation about the axis A. In addition, the dummy 31 protruding to the outside of the hinge housing 60 is fixed to the main body 110 or the folder 120 to rotate together when the folder 120 is opened. Thus, the hinge shaft 30 has a configuration that rotates in the hinge housing 60, the hinge cam 40 is pushed by the ridge 33 of the hinge shaft 30 to rotate backwards without rotating together Perform the retraction operation.

The hinge cam 40 is accommodated in the accommodating portion 61 of the hinge housing 60 and is installed to be movable only in the direction of the axis A. Therefore, the guide jaw 43 corresponding to the guide groove 63 formed in the hinge housing 60 is formed on the outer circumferential surface of the cam 40 to prevent the hinge cam 40 from rotating.

The hinge shaft 30 and the hinge cam 40 are formed with through holes 34 and 42 through which the pin shaft 22 of the hinge pin 20 can pass. At this time, it is preferable that at least the hinge cam 40 rotates with respect to the pin shaft 22 of the hinge pin 20.

Preferably, the hinge spring 50 uses a compression coil spring, and the hinge spring 50 is installed in the accommodating portion 61 of the hinge housing 60. More specifically, it is positioned between the hinge cam 40 and the projection 64 formed on the inner wall of the hinge housing 30 and is installed with a certain elastic force. Therefore, the hinge spring 50 serves to press the hinge cam 40 in the hinge shaft 30 direction.

The hinge pin 20 is formed in a shape larger than the inner diameter through which the pin shaft 22 and the pin shaft 22 penetrate the hinge shaft 30, the hinge cam 40, and the hinge spring 50. The pin head 21 is comprised.

Moreover, the hinge pin 20 is configured to rotate with the hinge shaft 30. The dummy 31 of the hinge shaft 30 is formed with a recess 32 having a predetermined shape rather than a circular shape, and the pin head 21 also has a corresponding shape so as to be seated in the recess 32. Form and rotate together. In addition, after the pin head 21 is seated, the upper surface of the pin head 21 coincides with the surface of the dummy 31.

 In addition, after the pin head 21 is seated in the recess 32 of the hinge shaft 30 dummy 31, a predetermined fixing means is configured on the hinge pin 20 to prevent the pin head 21 from being separated in the axial direction. . The fixing means is provided in the fixing groove 23 formed in the pin shaft 22 of the hinge pin 20 outside the hinge housing 60 to prevent the detachment. Preferably, the fastening of the hinge device 10 is completed by using the ring 70 as the fixing means.

As shown in FIGS. 3 and 4, the main body 110 of the folder type portable wireless terminal 100 has a main ground (not shown) provided in the main PCB 114, and the folder 120 has an LCD PCB 124. Equipped with a non-illustrated LCD ground. Furthermore, both ends of the hinge pin 20 and the respective grounds are connected to predetermined connection means 130 and 140.

Preferably, both ends are defined by pin heads 21 of the hinge pins 20 and pin shafts 22 having a predetermined length protruding out of the hinge housing 60. Furthermore, according to the present invention, the hinge pin 20 is formed of a conductive material, but is not limited thereto. Among the hinge components, the hinge housing 60, the hinge shaft 30, the hinge cam 40, Hinge spring 50 and the ring 70 is also preferably made of a metallic material to be able to ground both the hinge device (10).

The connecting means is divided into a first connecting means 130 that makes an electrical connection with the pin head 21 and a second connecting means 140 that makes an electrical connection with the pin shaft 22. The other end of the first connecting means 130 and the second connecting means 140 is directly or electrically connected to the ground of the ground, not shown by a session cable or a flexible printed circuit (FPC).

5A and 5B are cross-sectional views schematically illustrating main parts in which the first connecting means 130 is connected to the hinge device 10 according to the present invention as viewed in the direction B of FIG. 3. As shown in FIGS. 5A and 5B, as the first connecting means 130, a metallic plate-like spring and a metallic ball plunger having constant elasticity and always contacting are connected to the upper surface of the pin head 21.

6A and 6B are cross-sectional views schematically illustrating main parts in which the second connecting means 140 is connected to the hinge device 10 according to the present invention as viewed in the direction B of FIG. 3. As shown in FIGS. 6A and 6B, as the second connecting means 140, a metallic plate-like spring and a metallic ball plunger having a constant elasticity and always in contact with each other are electrically connected to the central axis of the protruding pin shaft 22. Connect.

7A and 7B are perspective views schematically showing another embodiment in which the second connecting means 140 is connected to the hinge device according to the present invention. As shown in FIGS. 7A and 7B, a metallic plate-like spring and a metallic ball plunger, which are in constant contact with each other, are electrically connected to the outer peripheral surface of the protruding pin shaft 22.

As shown in Figs. 5B, 6B and 7B, the ball plunger is easy to install due to its small volume, and is more than a plate spring because the curved ball end pressed by a predetermined spring always comes into contact with the outer surface. Operability will be good. However, as shown in FIG. 7B, when the metal ball plunger is electrically connected to the outer circumferential surface of the pin shaft 22 instead of the central axis as the second connecting means 140, the pin shaft 22 is somewhat larger than the plate spring. Since the shear force may lower the operability of the hinge device slightly, it is more stable to use a plate spring having a predetermined width with a pin shaft 22 having one or more ground portions as shown in FIG. 7A. to be. However, prior to this, it is correct to determine the second connecting means 140 according to the protruding length and the thickness of the pin shaft 22.

Therefore, the hinge device 10 acts as a medium for electrically connecting the main ground of the main body 110 and the LCD ground of the folder 120, and the enlarged ground when the hinge device itself operates as a grounding body. The structure may be implemented, which may lead to the above-mentioned electromagnetic wave reduction effect and efficient antenna radiation.

More preferably, the pin shaft 22 of the hinge pin 20 of the hinge device 10 is protruded to the outside to form an electrical connection, so that the hinge device 20 is used for mechanical friction parts for smooth operation of the hinge device 10. It is possible to reduce the poor electrical connection due to the leakage of the lubricating liquid.

More preferably, stable connection is achieved by integrally connecting the hinge pin 20, which is the same component of the hinge device 10, and the number of electrical contacts is reduced, so that the occurrence of defects is small, and the cause thereof is also easy to identify.

The folder type portable terminal including the grounding device of the folder type portable terminal according to the present invention reduces the number of contact points which are the cause of failure by connecting the main body and the ground of the folder with the hinge device, and furthermore, the resistivity due to the lubricant of the hinge device. By suppressing the occurrence of a poor connection, it is possible to minimize the cause of the early market failure after mass production by reducing the electromagnetic wave absorption rate and antenna radiation failure encouraged during mass production of the folder-type portable terminal.

Claims (10)

In the grounding device of a folder type portable terminal comprising a main body and a folder which is installed to be opened and closed about a predetermined axis with a predetermined angle in the main body, A PCB installed in the main body and / or folder and including a ground; A hinge device installed on a rotating shaft to which the main body and the folder are connected to provide a feeling of opening and closing of the folder; And It includes a connecting means for electrically connecting the ground of the PCB and the hinge device, And the connecting means is in contact with an outer surface of the conductive hinge pin installed to penetrate the hinge device. The method of claim 1, The hinge device, A hinge housing having predetermined through holes at both ends and having a predetermined accommodation portion; It is accommodated rotatably in the hinge housing, one end is formed with a vertical portion in the longitudinal direction, the other end is provided with a dummy protruding through the through hole of the hinge housing, the through hole in the longitudinal direction from the one end Formed hinge shaft; One end is provided with a valley corresponding to the ridge of the hinge shaft, one side is formed with a guide jaw to linearly flow in the guide groove of the hinge housing, the hinge formed with a through hole in the longitudinal direction from the one end cam; A hinge spring having one side supported by a protrusion of an inner wall of the hinge housing and pressing the hinge cam in a direction of the hinge shaft; A hinge pin whose one end protrudes outward from the hinge housing through the hinge shaft, the hinge cam, the hinge spring, and the hinge housing; And a predetermined fixing means for preventing separation of the hinge pin. The method of claim 2, One end of the hinge pin is formed in the pin shaft and the other end protruding a predetermined length to the outside of the hinge housing, at least a pin head is formed in a shape larger than the inner diameter through which the hinge pin of the hinge shaft; And the pin head is fixed to rotate together when the hinge shaft rotates. The method of claim 3, wherein The connecting means, First connecting means for electrically connecting one of the grounds of the main body or folder with the pin head of the hinge pin; And a second connecting means for electrically connecting the ground except for the ground connected to the pin head and the protruding pin shaft. The method of claim 4, wherein Grounding device of a folder type portable terminal, characterized in that the first or second connecting means is a metal plate spring having a constant elasticity and always in contact with the head or pin shaft of the hinge pin. The method of claim 4, wherein A grounding device for a folder type portable terminal, characterized in that a metallic ball plunger which is in constant contact with the head or the pin shaft of the hinge pin is used as the first or second connecting means. The method according to claim 5 or 6, One end of the first or second connection means is a grounding device of a folder type portable terminal, characterized in that it is electrically connected to the ground of the main ground or the LCD ground directly or by a session cable or a flexible printed circuit (FPC). The method of claim 4, wherein And the first connecting means is connected to an upper surface exposed to the outside of the pin head. The method of claim 4, wherein And the second connecting means is connected to a central axis of the pin shaft. The method of claim 4, wherein And the second connecting means may be installed to connect to an outer circumferential surface of the pin shaft.

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