KR100830967B1 - Portable terminal having fpcb protecting device - Google Patents

Abstract

A portable terminal having an FPCB(Flexible Printed Circuit Board) protecting device is provided to enable an FPCB to always have regular bending intervals even in case of repeated sliding motion of a slide unit, as maintaining slimness of the portable terminal, thereby preventing damage to the FPCB. A protecting device for an FPCB(400) comprises as follows. The first main roller(310) enables the FPCB to have regular bending intervals by rotating in predetermined direction according to movement of the FPCB, while an outer circumferential part thereof is contacted with the first side of the FPCB. Fixed members(330,340) support the first main roller to prevent movement except rotative motion in case of the rotative motion of the first main roller. Sub rollers(350,360) enable the fixed members to move in opposite direction to a mobile direction of a slide unit by rotating according to movement of the slide unit.

Description

Portable terminal having FPCB protection device

1A and 1B are conceptual views illustrating an FPCB installed in a general slide type portable terminal.

2 is a perspective view illustrating a flexible printed circuit board protection device according to an embodiment of the present invention.

3A, 3B, and 3C show a plan view, a front view, and a side view, respectively, of the flexible printed circuit board protection device shown in FIG.

4 is a perspective view showing an installation example of a flexible printed circuit board protection device according to an embodiment of the present invention.

5A and 5B are perspective views and cross-sectional views illustrating a state of a flexible printed circuit board protection device when the portable terminal is closed according to an embodiment of the present invention.

6A and 6B are perspective views and cross-sectional views illustrating a state of a flexible printed circuit board protection device when a portable terminal is opened according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

200: slide portion 300: FPCB protection device

310: first main roller 311: first main shaft

320: second main roller 321: second main shaft

330: first fixing member 340: second fixing member

350: first sub roller 360: second sub roller

351: first sub shaft 361: second sub shaft

400: FPCB 410: bend

The present invention relates to a portable terminal, and more particularly, to a portable terminal having a flexible printed circuit board protection device that can be applied to a slide-type portable terminal using a flexible printed circuit board.

Recently, due to the evolution of mobile communication and the convergence of communication and broadcasting, various services such as high-speed portable Internet, video telephony, digital multimedia broadcasting, etc. are being provided through portable terminals in the conventional voice communication-oriented mobile communication service.

In addition, recently, the appearance of the portable terminal has been reduced in size, weight, and slim due to the user's portability and ease of use, and the opening and closing method of the portable terminal has been changed from a conventional flip type and a folder type. It is manufactured in a slide type suitable for watching digital multimedia broadcasting or moving pictures.

In addition, the slide-type portable terminal as described above is electrically connected between a main printed circuit board (PCB) (hereinafter abbreviated as "PCB") installed in the main body and a sub-PCB installed in the slide regardless of the slide motion of the slide. Flexible printed circuit boards are often used for connection.

Flexible Printed Circuit Boards (FPCBs) are electronic components developed to meet the trend of miniaturized and complex electronic products. Wiring is possible, soldering can be omitted, and high-density wiring and assembly are easy and reliability is high.

However, the FPCB has a disadvantage in that when stress is partially concentrated, damage occurs at a portion where stress is concentrated, thereby shortening lifespan, having low mechanical strength, and developing into a whole problem even when a partial failure occurs.

1A and 1B are conceptual views illustrating a FPCB installed in a general slide type portable terminal, in which FIG. 1A illustrates a connection state of the FPCB when the portable terminal is closed, and FIG. 1B illustrates a connection state of the FPCB when the portable terminal is opened. Indicates.

1A and 1B, a typical slide-type portable terminal includes a main body 10 and a slide 20, a main PCB 11 is installed on the main body 10, and a slide 20. The sub PCB 21 is installed.

The first PCB 13 is installed on the main PCB 11 to connect one end of the FPCB 30, and the second connector 23 to connect the other end of the FPCB 30 to the sub PCB 21. Is installed. The FPCB 30 has one end connected to the first connector 13 of the main PCB 11 and the other end connected to the second connector 23 of the sub PCB 21 so that the main PCB 11 and the sub PCB ( 21) provides transmission paths of various data, commands, control signals, and power supplies.

In addition, the FPCB 30 is formed with a bent portion 31 to ensure the mobility of the slide portion for opening and closing of the portable terminal, and to ensure a free connection regardless of the position where the main PCB 11 and the sub-PCB 21 are installed. .

As shown in FIGS. 1A and 1B, the position of the bent part 31 varies according to the movement of the slide part, and the bent interval 32 of the bent part 31 is determined by the body part 10 and the slide part 20 of the portable terminal. It depends on the thickness. Therefore, when the thickness of the portable terminal becomes thin, the bending gap 32 of the bent portion 31 becomes smaller and smaller.

In addition, as illustrated in FIG. 1B, when the slide unit 20 is moved and the portable terminal is opened and closed, the FPCB 30 is struck in the thickness direction 33 due to the weight of the FPCB 30. Will occur.

That is, as shown in FIG. 1A, the FPCB 30 installed in the conventional slide type portable terminal becomes smaller as the thickness of the portable terminal becomes smaller than the bending interval 32 of the curved portion 31. Damage to the FPCB 30 may occur due to repetitive movement and bending stress. When the portable terminal is opened and closed as shown in FIG. 1B, the bending stress is increased due to the weight of the FPCB 30. As the number of times of use increases, the possibility of damage to the FPCB 30 becomes very high.

It is therefore an object of the present invention to provide a portable terminal having an FPCB protection device capable of preventing damage to the FPCB while maintaining the slimness of the portable terminal.

A portable terminal having an FPCB protection device according to an aspect of the present invention for achieving the above object of the present invention is installed in close contact with the FPCB and the FPCB electrically connecting the body portion and the slide portion, the FPCB during the flow of the FPCB It maintains to have a constant bending interval, and includes a FPCB protection device that moves in close contact with the rear housing of the slide portion in accordance with the slide movement of the slide portion. FPCB protection device is the first main roller and the outer peripheral surface of the FPCB is in close contact with the flow of the FPCB to rotate in a predetermined direction so that the FPCB has a constant bending interval, and the rotation of the first main roller The fixing member is installed on the fixing member and the fixing member for supporting the main roller to prevent flow other than the rotational movement during the movement, and the outer circumferential surface is in close contact with the rear housing of the slide portion to rotate in response to the movement of the slide portion. It may include a sub roller to move in a direction opposite to the movement direction of the slide. The FPCB protector further includes a second main roller which is in close contact with a second surface and an outer circumferential surface opposite to the first surface of the FPCB and rotates in a direction opposite to the rotation direction of the first main roller in correspondence with the flow of the FPCB. It may include. The first main roller and the second main roller are respectively fixed to the rotational center in a longitudinal direction with a first main shaft and a second main shaft, and the first main shaft and the second main shaft are respectively fixed members. Can be installed on The sub-rollers may include first and second sub-rollers which are respectively installed in both longitudinal directions of the first main roller, and are respectively installed in the longitudinal direction at rotation centers of the first and second sub-rollers. The first sub shaft and the second sub shaft may be installed in the fixing member. The fixing member includes a first fixing member and a second fixing member having the same shape and paired with each other, wherein the pair of the first fixing member and the second fixing member are formed in both longitudinal directions of the first main roller. 1 may be installed to support the main roller, and the sub roller may be installed between the first fixing member and the second fixing member. The first main roller may have a length substantially equal to the width of the FPCB. The bending interval may be substantially the same as the diameter of the first main roller.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

2 is a perspective view showing a flexible printed circuit board protection device according to an embodiment of the present invention, Figures 3a, 3b and 3c are a plan view, a front view and a side view of the flexible printed circuit board protection device shown in FIG. .

2 to 3C, the FPCB protecting apparatus 300 according to an embodiment of the present invention includes a first main roller 310 and a second main roller 320, and includes a first main roller. The main shaft 311 and the second main shaft 321 are installed in the longitudinal direction at the rotation centers of the first main roller 310 and the second main roller 320, respectively. That is, the first main shaft 311 rotates together with the first main roller 310, and the second main shaft 321 rotates together with the second main roller 320.

A first fixing member 330 and a second fixing member 340 are paired to both the first main roller 310 and the second main roller 320 in the longitudinal direction, respectively, to form the first main shaft 311 and the first main roller 310. 2 is installed to support the main shaft 321 to prevent unnecessary flow other than rotational movement during the rotation of the first main roller 310 and the second main roller 320.

In addition, the interval between the outer circumferential surface of the first main roller 310 and the outer circumferential surface of the second main roller 320 may be spaced apart at predetermined intervals on the first fixing member 330 and the second fixing member 340. The main shaft installation groove 341 is formed.

The interval between the outer circumferential surfaces of the first main roller 310 and the second main roller 320 may be substantially the same as the thickness of the FPCB 400.

A first sub roller 350 is disposed between the first fixing member 330 and the second fixing member 340 provided at both sides of the first main roller 310 and the second main roller 320 in the longitudinal direction, respectively. And second sub rollers 360 are respectively installed.

A first sub shaft 351 and a second sub shaft 361 are fixedly installed at the rotation centers of the first sub roller 350 and the second sub roller 360, respectively, so that the first sub roller 350 and the second sub roller are fixed. The roller 360 may be installed on the first fixing member 330 and the second fixing member 340.

The first sub shaft 351 and the second sub shaft 361 are rotated together when the first sub roller 350 and the second sub roller 360 rotate. In addition, the first sub shaft 351 and the second sub shaft 361 are installed in the sub shaft installation grooves 343 formed in the first fixing member 330 and the second fixing member 340, respectively. Supported by the 330 and the second fixing member 340 prevents unnecessary flow other than rotational movement from occurring in the first sub-roller 350 and the second sub-roller 360.

Here, the first fixing member 330 and the second fixing member 340 are formed in the same structure and formed in pairs to form the first main roller 310 and the second main roller 320 in both longitudinal directions of the first main. The shaft 311, the second main shaft 321, the first sub shaft 351, and the second sub shaft 361 are supported to prevent the respective shafts from generating a flow other than the rotational movement.

4 is a perspective view showing an installation example of a flexible printed circuit board protection device according to an embodiment of the present invention.

Referring to FIG. 4, the FPCB protection device 300 is installed to span the FPCB through hole 220 formed in the rear housing 210 of the slide part 200. Specifically, the outer circumferential surfaces of the first sub-roller 350 and the second sub-roller 360 respectively disposed between the two pairs of the first fixing member 330 and the second fixing member 340 are respectively the FPCB through-holes 220. It is installed in close contact with the left and right slide rear housing 210.

The first sub-roller 350 and the second sub-roller 360 rotate in the clockwise and counterclockwise directions according to the flow of the FPCB 400 according to the slide movement of the slide unit 200, thereby preventing the FPCB protection device 300. ) Moves in the vertical direction (a) of the FPCB through-hole 220.

Here, the FPCB through-hole 220 is a hole formed in the rear housing 210 of the slide part so that the FPCB 400 electrically connects the slide part 200 and the main body part (not shown) to correspond to the width of the FPCB 400. It has a length (b) of the left and right and an upper and lower length (c) corresponding to the distance of the FPCB flowing in accordance with the movement of the slide portion.

The first main roller 310 and the second main roller 320 are positioned on the FPCB through-hole 220 to protect the FPCB 400 that flows according to the slide movement of the slide 200. .

Specifically, the FPCB 400 is installed such that both sides are in close contact with a gap formed between the outer circumferential surface of the first main roller 310 and the outer circumferential surface of the second main roller 320, and the FPCB 400 is moved by the slide motion of the slide part. The first main roller 310 and the second main roller 320 in close contact with both sides of the FPCB 400 rotate together when the position of the bent portion 410 of the FPCB is changed by the FPCB by the first main roller 310. The bent portion 410 is to change while having a constant bending interval.

Here, when the FPCB 400 moves, the first main roller 310 and the second main roller 320 rotate in opposite directions. In addition, the bending interval of the bent portion 410 formed in the FPCB 400 may be substantially the same as the diameter of the first main roller 310.

Therefore, the size of the bending interval of the bent portion 410 of the FPCB 400 is adjusted by changing the size of the diameter of the first main roller 310 according to the thickness of the portable terminal and / or the required bending interval of the FPCB 400. Can be. The diameter of the second main roller 320 may be preferably the same as the diameter of the first main roller 310. The length of the first main roller 310 and the second main roller 320 may preferably be substantially the same as the width of the FPCB 400.

As shown in Figure 4 in the portable terminal according to an embodiment of the present invention in close contact with both sides of the FPCB 400 in order to protect the FPCB (400) flowing correspondingly during the slide movement of the slide unit 200 By rotating the first main roller 310 and the second main roller 320 so that the bending interval of the FPCB 400 is always constant, and the FPCB protection device 300 is moved corresponding to the flow distance of the FPCB 400 As a result, additional bending stress due to the weight of the FPCB 400 is not generated.

5A is a perspective view illustrating a state of the FPCB protection device and the FPCB when the slide unit is closed in the portable terminal according to an embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along line II ′ of the slide unit shown in FIG. 5A. . 6A is a perspective view illustrating a state of the FPCB protection device and the FPCB when the slide unit is opened in the portable terminal according to an embodiment of the present invention, and FIG. 6B is along the line II-II ′ of the slide unit shown in FIG. 6A. It is a cut section.

5A to 6B, the states of the FPCB protection device 300 and the FPCB 400 according to the slide movement of the slide unit 200 in the portable terminal according to an embodiment of the present invention will be described first with reference to FIG. 5A. When the portable terminal is closed as shown in 5b, one end 411 of the FPCB 400 is positioned at the top of the slide unit 200.

At this time, the FPCB protection device 300 is in contact with the both sides of the FPCB 400 so that the bent portion 410 of the FPCB has a predetermined bending interval (substantially the same as the diameter of the first main roller) FPCB through-hole 220 It is located at the top of the.

One end 411 of the FPCB 400 may be equipped with a connector 413 that is electrically connected to the FPCB 400 and electrically connected to the main PCB (not shown) installed in the main body (not shown).

As shown in FIG. 5A, when an external force is applied to the slide unit 200 while the portable terminal is closed, the slide unit moves in an upward direction (arrow b in FIG. 5B). As illustrated in FIGS. 6A and 6B, the FPCB ( One end 413 of 400 is positioned at the center of the slide unit 200. In addition, the FPCB protection device 300 moves in the direction e opposite to the moving direction d of the slide part 200 in correspondence with the flow of the FPCB 400.

Specifically, when the slide unit 200 is moved in an upward direction (arrow b in FIG. 5B) by receiving an external force, the bent part 410 of the FPCB 400 having the other end connected to the sub-PCB (not shown) installed in the slide unit 200. ) Will also change position accordingly.

When the position of the bent portion 410 is changed, the first main roller 310 and the second main roller 320 are rotated in opposite directions to each other on both outer surfaces of the first main roller 310 and the second main roller 320. The close FPCB 400 is moved to change the position of the bent portion 410 of the FPCB 400 so that the bend interval is kept constant.

Therefore, the bending part 410 of the FPCB 400 is always maintained at a constant bending interval (substantially the same as the diameter of the first main roller) due to the FPCB protection device 300 even after repeated slide movements of the slide part 200. This can prevent damage to the FPCB (400).

In addition, the FPCB protection device 300 moves direction of the slide unit 200 on the FPCB through-hole 220 so as to correspond to the positional change of the bent portion 410 when the FPCB 400 flows according to the movement of the slide unit 200. Moving in the opposite direction (e) to (d), the additional bending stress caused by the weight of the FPCB 400 is eliminated.

According to the portable terminal having the FPCB protection device as described above, the FPCB protection device is installed in the FPCB through-hole of the slide part, and the FPCB is installed to be in close contact between the outer circumferential surfaces of the first main roller and the second main roller of the FPCB protection device. When the position of the bent portion of the FPCB is changed due to the slide movement, the bend interval of the bent portion of the FPCB is always kept constant by moving the FPCB while the first main roller and the second main roller rotate.

Therefore, the FPCB always has a constant bending interval even in the repeated slide movement of the slide part while maintaining the slimness of the portable terminal, thereby preventing damage to the FPCB.

In addition, the FPCB protection device includes a first sub roller and a second sub roller to move the FPCB protection device corresponding to the flow distance of the FPCB so that the outer circumferential surface is in close contact with the rear housing of the slide part so that the FPCB protection device can move. Avoid additional bending stress caused by self weight.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

Claims (8)

In the slide-type portable terminal comprising a main body and a slide sliding on the basis of the main body, A flexible printed circuit board 400 electrically connecting the main body portion and the slide portion; And The flexible printed circuit board 400 is installed in close contact with the flexible printed circuit board 400 to maintain the flexible printed circuit board 400 to have a constant bending interval during the flow of the slide, the slide unit Including a flexible printed circuit board protection device 300 that moves in close contact with the rear housing of the slide, The flexible printed circuit board 400 protector, The first surface and the outer circumferential surface of the flexible printed circuit board 400 is in close contact with each other and rotates in a predetermined direction corresponding to the flow of the flexible printed circuit board 400 so that the flexible printed circuit board 400 has a constant bending interval. A first main roller 310; Fixing members (330, 340) for supporting the first main roller 310 to prevent the flow other than the rotational movement during the rotational movement of the first main roller (310); And Installed on the fixing members 330 and 340 and having an outer circumferential surface in close contact with the rear housing of the slide part to rotate in response to the movement of the slide part so that the fixing members 330 and 340 move in a direction opposite to the moving direction of the slide part. Portable terminal, characterized in that it comprises a sub-roller (350, 360). delete According to claim 1, wherein the flexible printed circuit board protection device 300 A second surface and an outer circumferential surface of the flexible printed circuit board 400, which are opposite to the first surface of the flexible printed circuit board 400, may be in close contact with each other and may be opposite to the rotation direction of the first main roller 310 in correspondence with the flow of the flexible printed circuit board 400. Portable terminal, characterized in that it further comprises a second main roller (320) rotating in the direction. According to claim 3, The first main roller 310 and the second main roller 320 is installed in the first main shaft 311 and the second main shaft 321 is fixed to the rotation center in the longitudinal direction, respectively And the first main shaft (311) and the second main shaft (321) are installed on the fixing member, respectively. The method of claim 1, wherein the sub-rollers (350, 360) And a first sub roller 350 and a second sub roller 360 installed on both sides of the first main roller 310 in the longitudinal direction, respectively, wherein the first sub roller 350 and the second sub roller ( Portable terminal, characterized in that the first sub shaft (351) and the second sub shaft (361) respectively installed in the longitudinal direction at the rotation center of the 360 is installed on the fixing member (330, 340). The method of claim 1, wherein the fixing member (330, 340) And a first fixing member 330 and a second fixing member 340 having the same shape and paired with each other, wherein the pair of the first fixing member 330 and the second fixing member 340 is formed in the first main body. The sub rollers 350 and 360 are installed to support the first main roller 310 in both longitudinal directions of the roller 310 and between the first fixing member 330 and the second fixing member 340. Portable terminal, characterized in that is installed. Claim 7 was abandoned upon payment of a set-up fee. The method of claim 1, wherein the first main roller 310 is Portable terminal, characterized in that having the same length as the width of the flexible printed circuit board (400). Claim 8 was abandoned when the registration fee was paid. The method of claim 1, wherein the bending interval Portable terminal, characterized in that the same as the diameter of the first main roller (310).

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