KR20160071607A - Electric connector for connecting a fpc to printed circuit bboard - Google Patents

Abstract

Disclosed is a non-contact pin-type electrical connector (100) for a flexible printed circuit (FPC) (4), which pushes the FPC (4) onto a connected wiring portion (2) of a printed circuit board (PCB) (1), thereby electrically connecting the FPC (4) to the PCB (1). The non-contact pin-type electrical connector (100) includes: a body portion (10) which is fixedly installed on the PCB (1) so that the wiring portion (2) of the PCB (1) is exposed; a position determining means which arranges the FPC (4) at a connection position directly in face-to-face contact with the connected wiring portion (2) of the PCB (1); an upper cover (20) which acts as a pressing member that presses the FPC (4) positioned at a connection position of the body portion (10) by the position determining means from the opposite side of a connected surface toward the connected surface; and a pressing member fixing means which fixes the pressing member so that the upper cover (20) keeps pressing the FPC (4).

Description

TECHNICAL FIELD [0001] The present invention relates to a contactless terminal type FPC connector,

The present invention relates to a connector for connecting an FPC (Flexible Printed Circuit) to a wiring of a printed circuit board. More particularly, the present invention relates to a connector for connecting a contactless terminal Type FPC connector.

Electronic devices such as mobile phones have been miniaturized, and in particular, as electronic devices such as mobile phones have become thinner, the size of various electronic components incorporated therein is also reduced. Accordingly, the connector for electrically connecting the main printed circuit board and the electronic component is also required to be gradually miniaturized.

There is used an FPC connector which is mounted on a printed circuit board of an electronic device and connects one end of the FPC type wiring. Such an FPC connector usually has a plurality of contact pins which are in contact with a connection portion of a wiring printed on a printed circuit board. The contact terminal is made by bending a thin metal plate and then inserted into a groove formed in the insulating housing of the FPC connector.

The contact terminals of the conventional FPC connector are soldered to the rear printed circuit board and the front end of the contact terminals come into contact with the exposed portion of the FPC inserted into the FPC connector. These contact terminals are prepared in a number corresponding to the number of connection pins of the connector and inserted and assembled into the respective grooves of the insulation housing of the connector.

The conventional FPC connector as described above has various disadvantages in manufacturing and assembling the contact terminal. First, a precise and expensive mold is required for manufacturing the contact terminal, so the manufacturing cost is increased. Second, since the overall size of the connector is reduced and the size of the contact terminal assembled in one connector is gradually reduced, the incidence of failure is high in the manufacturing process, the number of contact terminals (pins) The spacing (pitch) between them is also very small, so that the defect rate in the assembly process also increases relatively. Third, after the FPC is assembled to the connector with the contact terminal assembled, there is a disadvantage that the defect occurrence rate of the product performance is increased due to the contact failure between the contact terminal and the FPC wiring. Fourth, when the FPC is fixed to the connector by fixing the connector, the connector must be provided with additional fixing means for firm connection of the FPC, which complicates the structure.

In order to solve such a disadvantage of the contact terminal type FPC connector, an FPC connector as described in the following patent document 1 is known.

The conventional FPC connector disclosed in Patent Document 1 has a structure in which a pressing member for pressing and fixing an FPC on a substrate moves along a cam track of the outer casing so as to move between a pressing position and a unclamping position, Is bent and formed at the front and rear sides, respectively, so as to press the FPC. The pressing member having such a structure has a drawback in that the FPC can not be pressed with a sufficient pressing force in the central region although the pressing force that presses the FPC at both side edge portions is sufficient because the pressing member has convex flexure deformation in the central region in the longitudinal direction. Therefore, there is a problem that the FPC is easily separated even with a small external force while being fixed by connecting the FPC. In addition, since the pressing member is made of a metal material, preferably a stainless steel plate material, plastic deformation is liable to occur, and elastic restoring force is limited.

In the case of the FPC connector of the conventional patent document 1, it is very difficult to move the pressing member along the cam track and to move the pressing member to the pressing position in the case of a small thickness, which is disadvantageous in terms of assembling workability and operability.

KR 10-2010-0031048 A KR 10-0704291 B1

SUMMARY OF THE INVENTION The present invention has been made to overcome the disadvantages of the prior art described above, and it is an object of the present invention to provide an FPC and a printed circuit board which can be directly contacted without using a contact terminal, Contact type terminal-type FPC connector capable of preventing a contact-type terminal from being damaged.

Another object of the present invention is to provide a contactless terminal type FPC connector capable of realizing stable connection by applying a uniform elastic pressing force to the entire area of connection with the printed circuit board when connecting the FPC.

In order to achieve the above object, the present invention is a contactless terminal type FPC electrical connector in which an FPC is brought into close contact with a connected wiring portion of a printed circuit board and electrically connected to each other, A body portion fixedly mounted on the circuit board; Positioning means for aligning the FPC to a connection position in direct face-to-face contact with a connected wiring portion of the printed circuit board; A pressing member that presses the FPC positioned at the connection position of the body portion by the positioning means toward the connection surface from the opposite side of the connection surface to electrically connect the FPC to the connected wiring portion; And a pressing member fixing means for fixing the pressing member such that the pressing member presses the FPC.

Wherein the pressing member is integrally extended upward from the first sidewall of the one end of the body toward the second sidewall of the opposite end and presses the FPC positioned at the connecting position when an external force is applied to the body, Position, and returns to the FPC releasing position where the FPC is released by the elastic restoring force when the external force is removed.

The pressing member may further include a pressing piece provided on a bottom surface of the upper cover. The pressing piece is integrally extended from one side wall of the upper cover to an opposite side wall along the width direction of the upper cover at a predetermined distance from the bottom surface of the upper cover at an extension portion bent downward by a predetermined distance from the bottom surface of the upper cover Respectively.

The pressing piece may be a separate member from the upper cover, and may be detachably coupled to the bottom surface of the upper cover by a coupling means.

The pressing piece may be bent from one side wall of the upper cover to a lower side of the upper cover by a predetermined distance so as to be spaced apart from the bottom of the upper cover by a predetermined distance, As shown in Fig.

The pressing piece is integrally extended to the center in the width direction of the upper cover at a predetermined distance from the bottom surface of the upper cover by an extension part bent downward by a predetermined distance from the bottom surface of the upper cover at both side walls of the upper cover, And may be divided into a pair of pressing pieces.

In this case, each pressure piece has a structure in which it gradually slopes downwardly toward the center in the width direction of the upper cover in the extending portion. According to this structure, when the upper cover is disposed at the FPC pressing position, when the pair of pressing pieces press the FPC, the pressing piece is not tilted to either side and presses the FPC flatly, So that they are uniformly connected.

The FPC electrical connector of the present invention includes a stopper for restricting a maximum downward movement amount of the front end of the upper cover so that the front end of the upper cover does not move excessively beyond the pressing position when the upper cover moves to the pressing position .

The stopper protrudes along the longitudinal direction at the front end of the front end of the upper cover. When the front end of the upper cover moves to the pressing position, the stopper abuts against the upper surface of the second sidewall of the body, Thereby limiting the movement of the tip. Accordingly, even if the upper cover is inadvertently pressed excessively, the upper cover can be prevented from being deformed by more than a predetermined amount, so that the upper cover can be prevented from plastic deformation at the connecting portion of the body.

In addition, in the FPC electrical connector of the present invention, the pressing member fixing means may include a skirt portion extending downwardly inclined from the front end of the upper cover, and an upper portion of the skirt portion extending downward from the upper end of the first side wall of the body portion, And the engaging piece.

The FPC electrical connector according to the present invention having the above-described structure can connect the FPC and the printed circuit board directly to each other without using a contact terminal, and can connect the FPC to the printed circuit board. .

Further, when the FPC is connected, since the tip end of the pressing piece is inclined downward, the FPC is deformed into a horizontal posture when the FPC is pressed by the pressing piece, so that a uniform elastic pressing force is applied throughout the connection region with the printed circuit board, .

In addition, when the FPC electrical connector of the present invention is manufactured by press working with a thin metal plate, since both sides of the front side wall of the body are firmly fixed to the printed circuit board with the fixing piece, when the upper cover is fixed to the FPC pressing position, It is possible to withstand the force exerted on the fixing means by means of the bolts, and the assembling rigidity can be improved.

1 is a perspective view of a preferred embodiment of the FPC electrical connector of the present invention,
Fig. 2 is a perspective view immediately before assembling the FPC electrical connector of Fig. 1 to a printed circuit board,
3 is a perspective view of the FPC electrical connector assembled to a printed circuit board,
4 is a side sectional view of the FPC before insertion into the FPC electrical connector,
FIG. 4A is a side cross-sectional view of the FPC in the state of FIG. 4, in which the FPC is pushed into the electrical connector body portion and aligned at the connection position,
5 is a perspective view of a state in which the FPC is pressed by the upper cover of the FPC electrical connector after inserting the FPC into the FPC electrical connector,
Fig. 6 is a side sectional view of Fig. 5,
Fig. 7 is a cross-sectional view of Fig. 4 in which the upper cover is in a state before pressing the FPC,
Fig. 8 is a cross-sectional view of Fig. 5 in which the upper cover is moved to the FPC pressing position and the pressing piece presses the FPC horizontally.

Hereinafter, preferred embodiments of the contactless terminal type FPC electrical connector according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the FPC electrical connector according to the first embodiment of the present invention is mounted on the printed circuit board 1 such that the connected wiring portion 2 of the printed circuit board 1 is exposed, (2) of the printed circuit board (1) and a printed circuit board (1), and a printed circuit board (1) And positioning means for positioning the FPC (4) positioned at the connection position of the body part (10) to the connection face from the opposite side of the connection face by the positioning means, And a pressing member fixing means for fixing the pressing member so as to maintain a state of pressing the FPC 4 disposed at the connection position.

The FPC electrical connector of the first embodiment is preferably integrally formed by molding a single thin metal plate into a press. Accordingly, the body 10, the pressing member, and the pressing member fixing means are integrally formed.

The body portion 10 has an opening 11 for exposing the connected wiring portion 2 of the printed circuit board 1 at the bottom and a connecting portion of the FPC 4 And a second side wall 12 as a connection part 18 to which the upper cover 20 is connected is provided at a rear end opposite to the first side wall 12, .

The connection portion 5 of the FPC 4 is inserted into the body portion 10 through the entrance 13 of the body portion 10 and the positioning means is provided with the connection portion 5 of the FPC 4, Is positioned so as to be aligned with the connection position where the printed wiring board (2) is in contact with the printed wiring board (2) of the printed circuit board (1) exposed through the opening (11)

In the first embodiment, the positioning means is composed of the outer surface of the front first sidewall 12 of the body portion 10 and the positioning surface 6 of the FPC connecting portion 5. 3 and 4A to 4A, the connection portion 5 of the FPC 4 is pushed into the entrance 13 of the body portion 10 so that the connection portion 5 of the FPC connection portion 5 The wirings exposed on the bottom surface of the connecting portion 5 of the FPC 4 come into contact with the outer surface of the front first sidewall 12 of the body portion 10, And is arranged at a connection position in face-to-face contact with the connected wiring section 2. [

The FPC connecting portion 5 aligned at the connecting position of the body portion 10 is pressed by the pressing member so that the wiring exposed on the bottom surface of the FPC connecting portion 5 and the connected wiring portion 2 of the printed circuit board 1 are in close contact with each other .

1, the pressing member includes an upper cover 20 integrally extended upward from the first sidewall of the one end of the body toward the second sidewall opposite the front end, The upper cover 20 is bent in a downward direction by a predetermined distance from the bottom surface of the upper cover 20 at both side walls of the upper cover 20, And a pair of pressing pieces 30 extending integrally to the center.

As shown in FIG. 7, the respective pressing pieces 30 are inclined upward gradually toward the center in the width direction of the upper cover 20 from the extending portion 21 at the FPC releasing position, . 8, when the upper cover 20 is pressed to the FPC pressing position, the pressing piece 30 is deformed into a state parallel to the upper surface of the printed circuit board 1 The FPC connecting portion 5 disposed at the lower side is uniformly pressed over the entire width direction.

An unexplained reference numeral 22 denotes a cut groove for receiving the deformation of the pressing piece 30 when it is deformed.

As shown in FIGS. 4 and 5, when the upper cover 20 is pushed to the FPC pressing position, the upper end of the upper cover 20 is moved so that the front end of the upper cover 20 does not move beyond a predetermined position. And a stopper 34 for limiting the maximum movement amount of the front end is provided. The stopper 34 protrudes along the longitudinal direction at the front end of the front cover of the upper cover 20. When the front end of the upper cover 20 moves to the FPC pressing position, The upper end of the upper cover 20 abuts against the upper end surface 17 of the second side wall 12 of the upper cover 20 so as to limit the movement of the front end of the upper cover 20. [ This is because plastic deformation occurs at the connecting portion 18 of the front first sidewall of the upper cover 20 when the upper cover 20 is excessively pressed toward the bottom surface of the body portion 10, This is to prevent the loss of function.

The pressing member fixing means includes a skirt portion 33 extending downward from the front end of the upper cover 20 and a skirt portion 33 extending downwardly inclined from the first side wall top surface 17 of the body portion 10, And a latching piece 15 for preventing the upper cover 20 from retracting from the FPC pressing position by abutting against the skirt portion 33 at the pressing position.

When the upper cover 20 is to be unfastened while the upper cover 20 is fixed to the FPC pressing position due to the engagement of the skirt portion 33 with the engaging piece 15, When the tool is pushed in between the upper cover 34 and the skirt portion 33 of the upper cover 20 to forcefully extend the gap between the engaging piece 15 and the skirt portion 33, The upper cover 20 is returned to the FPC releasing position by the elastic restoring force so that the pressing piece 30 presses the FPC connecting portion 5.

1 to 3, the FPC electrical connector according to the present embodiment includes a fixing piece 14 extending downward from the left and right ends of the upper end surface 17 of the front first sidewall 17 of the body 10, Respectively. The fixing piece 14 is fitted to the mounting hole 3 of the printed circuit board 1 by soldering when fixing the body 10 to the printed circuit board 1, Thereby firmly fixing the part 10 to the printed circuit board 1.

The front first sidewall upper end surface 17 of the body portion 10 is in contact with the upper surface of the upper cover 20 in the state in which the skirt portion 33 of the upper cover 20 is engaged with the retaining piece 15 of the body portion 10, The fixed piece 14 fixed to the mounting hole 3 of the printed circuit board 1 is fixed to the upper surface of the body portion 10 by the resilient restoring force, The upper first side wall top surface 17 supports the force received from the skirt portion 33 of the upper cover 20 so that the front side first side wall upper surface 17 of the body portion 10 prevents the warp deformation Also.

As shown in Fig. 6, when the upper cover 20 moves to the FPC pressing position and presses the FPC, the fixing wings 7 are formed on both side edges of the connecting portion 5 of the FPC 4, (36) is fitted in the latching horn (7) of the FPC connecting portion (5) so that the connecting portion (5) of the FPC (4) is not separated from the connecting position.

100: FPC electrical connector of the present invention
1: printed circuit board 2: connected wiring portion
3: Mounting hole 4: FPC
5: connecting part 6: positioning plane
7: latching groove 10:
11: opening part 12: first side wall
13: entrance and exit 14:
15: engaging piece 16: recessed groove
17: upper surface of the first side wall 18:
20: upper cover 21: extension
22: incision groove
30: pressing piece 31: pressing part
33: skirt portion 34: stopper
36: Fixed blade

Claims (10)

In a contactless terminal type FPC electrical connector (100) in which an FPC (4) is brought into close contact with a connected wiring portion (2) of a printed circuit board (1)
The FPC electrical connector (100)
A body portion 10 fixedly mounted on the printed circuit board 1 to expose a connected wiring portion 2 of the printed circuit board 1,
Positioning means for aligning the FPC (4) at a connection position in direct face-to-face contact with the connected wiring section (2) of the printed circuit board (1);
A pressing member for pressing the FPC (4) positioned at the connection position of the body portion (10) by the positioning means from the opposite side of the connection face toward the connection face to electrically connect to the connected wiring portion (2); And
And a pressing member fixing means for fixing the pressing member so that the pressing member keeps pressing the FPC (4). The method according to claim 1,
The pressing member extends integrally upwards from the first sidewall of one end of the body 10 toward the second sidewall of the other end of the body 10 so as to be inclined upwardly. When an external force directed to the body 10 acts on the upper surface, (20) that is elastically deformed to an FPC pressure position for pressing a connection portion of the FPC (4) positioned in the housing (10) and returns to the FPC pressure release position for releasing the FPC by elastic restoring force when the external force is removed Wherein the FPC connector comprises: 3. The method of claim 2,
Wherein the pressing member further comprises a pressing piece (30) provided on a bottom surface of the upper cover (20). The method of claim 3,
Wherein the pressing piece (30) is made of a member separate from the upper cover and is coupled to the bottom surface of the upper cover (20). The method of claim 3,
The pressing piece 30 is extended from the side wall of the upper cover 20 by a predetermined distance from the bottom surface of the upper cover 20 so as to be spaced apart from the bottom surface of the upper cover 20 by a predetermined distance And extends integrally to the opposite side end along the width direction of the upper cover (20). The method of claim 3,
The pressing piece 30 is bent at a predetermined distance from the bottom surface of the upper cover 20 on both side walls of the upper cover 20 so as to be bent at a constant distance from the bottom surface of the upper cover 20 And a pair of pressing pieces (30) extending integrally to the center in the width direction of the upper cover (20) with an interval therebetween. The method according to claim 6,
Wherein each of the pressing pieces (30) is gradually inclined downwardly toward the center in the width direction of the upper cover (20) in the extending portion (21). 3. The method of claim 2,
A stopper 34 for limiting the maximum amount of movement of the front end of the upper cover 20 so that the front end of the upper cover 20 does not move beyond the FPC pressing position when the upper cover 20 moves to the FPC pressing position, And the second connector is further provided with the second connector. 9. The method of claim 8,
The stopper protrudes along the longitudinal direction at the front end of the front cover of the upper cover 20. When the front end of the upper cover 20 moves to the FPC pressing position, And the second side wall (which abuts against the upper face to limit the movement of the front end of the upper cover (20). 3. The method of claim 2,
The pressing member fixing means includes a skirt portion 33 extending downwardly inclined from the front end of the upper cover 20 and a skirt portion 33 extending downward at an upper end of the first side wall of the body portion 10, 33) of the skirt portion (33) so as to prevent separation of the skirt portion (33).

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