KR20090043830A - Connector for joining with flexible flat cable - Google Patents

Connector for joining with flexible flat cable Download PDF

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Publication number
KR20090043830A
KR20090043830A KR1020070109607A KR20070109607A KR20090043830A KR 20090043830 A KR20090043830 A KR 20090043830A KR 1020070109607 A KR1020070109607 A KR 1020070109607A KR 20070109607 A KR20070109607 A KR 20070109607A KR 20090043830 A KR20090043830 A KR 20090043830A
Authority
KR
South Korea
Prior art keywords
ffc
terminal portion
connector
cutting
terminal
Prior art date
Application number
KR1020070109607A
Other languages
Korean (ko)
Inventor
김훈희
Original Assignee
주식회사 케이콤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케이콤 filed Critical 주식회사 케이콤
Priority to KR1020070109607A priority Critical patent/KR20090043830A/en
Publication of KR20090043830A publication Critical patent/KR20090043830A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The present invention relates to a connector for FFC connection, and more particularly to a connector for FFC coupling having a structure capable of preventing damage to the FFC contact portion due to the repetition of the coupling and disconnection. The FFC coupling connector includes: a bent terminal portion extending and connected to the FFC and having a portion extending in the same direction as the FFC and an inclined portion; A cutting terminal portion extending and connected to the FFC and having only a portion extending in the same direction as the FFC; A housing having an opening into which the bent terminal portion is inserted and a locking protrusion for fixing the cutting portion, and for housing a portion of the FFC, the bent terminal portion and the cutting portion; And an upper cover and a lower cover for fixing a part of the FFC, the bending terminal portion, and the cutting terminal portion to the housing, wherein the bending terminal portion and the cutting terminal portion are alternately and repeatedly arranged.

FFC, connector, bending terminal, cutting terminal, pressure protrusion, fixing protrusion

Description

Connector for Joining with Flexible Flat Cable

The present invention relates to a connector for the connection of a flexible flat cable (hereinafter referred to as "FFC"), specifically to a structure that can prevent damage to the conductor contact portion due to repeated coupling and disconnection The present invention relates to a connector for coupling FFC having an excitation.

An FFC or flexible cable connector refers to an electrical component used for electrical connection between electronic devices requiring parallel input and output of a large number of electrical signals by forming a plurality of wires into one cable. The FFC connector has a problem in that a plurality of terminals are arranged in parallel and need to be repeatedly separated and coupled, thereby causing an electrical failure state due to deformation of the terminal or adhesive part in the manufacturing process and use process.

5 illustrates an FFC connector generally used for transmitting electrical signals to a PCB substrate or LCD panel. The FFC 51 is coupled to the housing 52 of the connector by a double-sided adhesive tape 53 attached opposite the conductive portion. In the case of the known FFC coupling connector, the adhesive strength between the FFC and the connector is determined by the adhesive force of the adhesive tape, so that deformation or lifting due to pressure or excessive pressing applied by the header terminal coupled with the FFC coupling connector is prevented. There is a problem that it is easy to occur. In addition, if the product is exposed to high temperature and high humidity during the storage or loading process for a certain time, the adhesive force may be changed due to the deformation of the adhesive bond itself, causing the FFC end 64 to be lifted. I have a problem. In addition, durability may be weakened by repeated coupling and separation, which may be a defect in the use process.

Another type of connector for solving the above problem is shown in FIG. The FFC coupling connector shown in FIG. 6 is manufactured by soldering 63 in a state in which a plurality of connection terminals 61 are press-fitted into the housing and the conductive portion 62 of the FFC is in contact with the connection terminal 61. . The FFC coupling connector has a problem in that foreign matter may be introduced during the soldering process, and the housing may be thermally deformed due to the soldering temperature, and electrical insulation between terminals is difficult.

Patent Publication No. 2005-98609 is a prior art for solving the problem of a known FFC coupling connector. The prior art is characterized in that only the odd or even terminals are installed to be rotatable with the driver. Other prior art related to FFC mating connectors is disclosed in Patent Publication No. 2007-0004764. It is characterized by using a temporary holding member to check the robustness of the coupling.

The known FFC coupling connector has a problem that it is easy to be defective due to deformation, and the prior art does not propose an improvement structure for the basic problem of the FFC coupling connector. The present invention proposes a connector that can solve the problem of defects that may occur in the manufacturing and use of the connector for FFC coupling and improve the contact reliability proposed in the prior art with a simple structure.

An object of the present invention is to provide a connector for FFC coupling that can solve the problem of defects that may occur during manufacturing and use, and can improve the electrical contact reliability.

According to a preferred embodiment of the present invention, a connector for FFC coupling includes: a bent terminal portion extending and connected to the FFC and having a portion extending inclined with a portion extending in the same direction as the FFC; A cutting terminal portion extending and connected to the FFC and having only a portion extending in the same direction as the FFC; A housing having an opening into which the bent terminal portion is inserted and a locking protrusion for fixing the cutting portion, and which accommodates a part of the FFC, the bent terminal portion and the cutting portion; And an upper cover and a lower cover for fixing a part of the FFC, the bending terminal portion, and the cutting terminal portion to the housing, wherein the bending terminal portion and the cutting terminal portion are alternately and repeatedly arranged.

According to another suitable embodiment of the present invention, the fixing projection surface is formed on the housing surface corresponding to the portion extending in the same direction as the FFC of the bent terminal portion and the cutting terminal portion.

According to another suitable embodiment of the present invention, the FFC terminal portion extending and connected to the FFC for the FFC coupling connector is bent terminal portion having an extension extending in the same direction as the FFC and the bent portion inclined to the extension; And a cutting terminal portion extending in the same direction as the FFC, wherein the bending terminal portion and the cutting terminal portion are alternately arranged repeatedly.

According to another suitable embodiment of the present invention, a housing for an FFC coupling connector for electrically connecting an FFC with an electronic component having a header includes an extension of the FFC inserted into the connection portion of the header together with the terminal portion of the FFC coupling connector. In order to fix at a predetermined position, a fixing protrusion surface is formed at a position corresponding to the contact terminal of the header.

The connector according to the present invention has the advantage that it is possible to prevent a poor electrical contact due to deformation of the terminal portion that may occur in the manufacturing process or use process. In addition, since it has a structure that can be firmly fixed to a certain position on the header of other electronic components has the advantage that the electrical contact reliability can be improved.

The invention is described in detail below with reference to the accompanying drawings and by presenting embodiments. The examples presented are for a clear understanding of the invention and are not intended to limit the scope of the invention.

Figure 1 shows a perspective view of the FFC of the connector for FFC coupling according to the present invention.

The end portion 10 of the FFC includes a connection reinforcement 12 and a terminal portion 11. In the connection reinforcement part 12, a positioning groove 121 is formed to determine a position for engaging with the header, and the terminal part 11 connected with the connection reinforcement part 12 and electrically coupled to the header is a bent terminal part ( 11a) and cutting terminal portion 11b. The bending terminal portion 11a and the cutting terminal portion 11b each include a plurality of terminals for transmitting electrical signals transmitted from the FFC to other electronic components. The terminals of the bending terminal portion 11a and the cutting terminal portion 11b have different structures. As shown in FIG. 1, the terminal of the bent terminal part 11a is formed of two different parts, such as the extension part 111 and the bent part 112, but the terminal of the cutting terminal part 11b has only the extension part 111. Have The bent portion 112 extends downward while forming an inclination angle of a predetermined size in the extension portion 111 or in a bent state. The bending terminal part 11a and the cutting terminal part 11b including a predetermined number of terminals may be alternately and repeatedly formed in the terminal part 11. The bent terminal portion 11a and the cutting terminal portion 11b may include different numbers of terminals, but preferably include the same number of terminals. The number of the bent terminal portion 11a and the cutting terminal portion 11b formed in the terminal portion 11 may be determined in consideration of the total number of terminals, but are formed at least one by one. The bending terminal part 11a and the cutting terminal part 11b may each include at least one terminal. The end portion 10 of the FFC including the bent terminal portion 11a and the cutting terminal portion 11b is combined with other components to form a connector for FFC coupling.

Figure 2a shows an exploded perspective view of an embodiment of a connector for FFC coupling according to the present invention.

Referring to FIG. 2A, the FFC coupling connector 20 includes a housing 21 fixing the FFC end portion 10; An upper cover 22a installed above the housing 21; And a lower cover 22b installed below the housing 21. The housing 21 includes an opening 21a for fixing the bent portion 112 of the bent terminal portion 11a; It includes a locking projection (21b) is fixed to the end of the cutting terminal portion (11b) and the positioning projection (121a) coupled with the positioning groove (121). Opening 21a; Engaging projection 21; Except for the positioning protrusion 121a, the housing 21 of the connector 20 according to the present invention may have a known structure or a modified structure. Therefore, description of well-known parts will be omitted or simply described if necessary. However, such omissions and brief descriptions are intended to clearly describe the present invention and should not be understood as excluding such a known structure from the scope of the present invention.

FIG. 2B illustrates a cross-sectional view of a part of a combined perspective view of the separated perspective view of FIG. 2A. FIG.

As already described above, the connector 20 according to the present invention comprises: an FFC end coupled to a housing; An upper cover 22a of the housing; And a lower cover 22b. The terminal portion formed at the end of the FFC includes a bending terminal portion 11a and a cutting terminal portion 11b, and the bending terminal portion 11a is coupled to a portion in which the opening 21a of the housing is formed, and the cutting terminal portion 11b is The engaging projection 21b is combined with the formed portion. The upper cover 22a and the lower cover 22b are coupled to the housing at the upper and lower surfaces of the housing, respectively, to fix the FFC and the terminal part to form the connector 20 for FFC coupling.

As shown in FIG. 2B, the connector 20 according to the present invention may be prevented from being deformed by forming the terminal portion corresponding to the electrically conductive portion for transmitting the electrical signal into the bent terminal portion 11a and the cutting terminal portion 11b. have. Specifically, the end portion of the bent terminal portion 11a is inserted into the opening 21a of the housing, and the end portion of the cutting terminal portion 11b is caught by the locking protrusion 21b. As a result, the terminal portion 11 has high resistance to external environments such as high temperature, and can prevent the phenomenon of lifting that can occur frequently in a long-term use process. The connector of the present invention having this advantage is shown in Figure 3a.

3A is a sectional view of a portion corresponding to the bent terminal portion of the terminal portion.

Referring to FIG. 3A, the bent terminal portion 11a bonded to the extension portion of the FFC 31 is inserted into the tapered opening 21a so as to be inclined formed at the end portion of the housing 21. The upper cover 22a and the lower cover 22b are coupled to the housing to fix the FFC 31 and the bent terminal part 11a. In order to prevent the connector from moving forward and backward when engaged with the header, a concave surface 221 may be formed at a predetermined position of the upper cover 22a, and an end of the upper cover 22 may be extended downwardly ( 222) has a structure.

3B is a cross-sectional view of a portion corresponding to the cutting terminal portion of the terminal portion.

The end of the cutting terminal portion 11b is fixed by the locking protrusion 21b of the housing 21. The locking protrusion 21b has a structure that protrudes upward from the point of contact with the end of the cutting terminal portion 11b to extend. The cutting terminal portion 11b is brought into contact with the side surface of the upwardly protruding portion and is subjected to a certain size of pressure so as to be firmly fixed at a predetermined position. The FFC 31 connected to the cutting terminal portion 11b is fixed by the upper cover 22a and the lower cover 22b in the same manner as described in FIG. 3A.

The connector is coupled with the header of other electronic components to transmit or receive electrical signals through pins or terminals of the terminal portion.

4A shows a cross-sectional view of the FFC coupling connector according to the present invention coupled to a header of another electronic component, and FIG. 4B shows an enlarged view of the portion indicated by A of FIG. 4A.

The terminal portion 11 of the FFC coupling connector 20 is coupled to the connection portion of the header 15 to electrically connect two electronic components. A terminal portion 11 consisting of a cutting terminal portion or a bending terminal portion is coupled to the FFC 31 and inserted into the connecting portion together with the ends of the housing 21 and the lower cover 22b. As shown in FIG. 4B, a pair of pressure protrusions 41a and 41b are formed at the connection portion of the header 40 to apply pressure to the terminal portion to fix the inserted terminal portion at a predetermined position of the connection portion. Of the pair of pressure protrusions, the pressure protrusion 41a which contacts the terminal portion 11 such as the cutting terminal portion or the bending terminal portion is formed of a conductive material to have a terminal function. The end portion of the housing 21 inserted into the connecting portion is pressed by the pair of pressure protrusions 41a and 41b together with the terminal portion 11. The fixing protrusion surface 211 may be formed at a portion in contact with the pair of pressure protrusions 41a and 41b of the housing 31 so that the terminal portion 11 is firmly fixed to a predetermined position of the connecting portion. The fixing protrusion surface 211 may have any shape but preferably may have an upwardly convex structure having an upward appearance of a sphere.

Although the bent terminal portion of the terminal portion is fixed to the connecting portion in FIG. 4B, the cutting terminal portion of the terminal portion is also fixed to the connecting portion in a similar manner.

The present invention has been described above in detail by using an embodiment. Embodiments are exemplary and those skilled in the art may make various modifications and modifications to the embodiments without departing from the spirit of the present invention. The scope of the invention is not limited by these modifications and variations, but only by the appended claims.

Figure 1 shows a perspective view of the FFC of the connector for FFC coupling according to the present invention.

Figure 2a shows an exploded perspective view of an embodiment of a connector for FFC coupling according to the present invention.

2B illustrates a form in which the separated perspective view of FIG. 2A is combined.

3A is a sectional view of a portion corresponding to a cut portion of the terminal portion.

3B is a cross-sectional view of a portion corresponding to the cutting terminal portion of the terminal portion.

4A shows a cross-sectional view of the FFC coupling connector according to the present invention coupled to a header of another electronic component, and FIG. 4B shows an enlarged view of the portion indicated by A of FIG. 4A.

5 illustrates a generally known connector for FFC coupling in order to deliver electrical signals to a PCB substrate or LCD panel.

Fig. 6 shows another known FFC connector.

Claims (4)

In the connector for FFC coupling, A bent terminal portion extending and connected to the FFC and having a portion extending in the same direction as the FFC and an inclined portion; A cutting terminal portion extending and connected to the FFC and having only a portion extending in the same direction as the FFC; A housing having an opening into which the bent terminal portion is inserted and a locking protrusion for fixing the cutting portion, and which accommodates a part of the FFC, the bent terminal portion and the cutting portion; And An upper cover and a lower cover for fixing a part of the FFC, a bending terminal portion and a cutting terminal portion to the housing, The bending terminal portion and the cutting terminal portion in the above is an FFC coupling connector, characterized in that arranged repeatedly. The connector of claim 1, wherein a fixing protrusion surface is formed on a housing surface corresponding to a portion extending in the same way as the FFC of the bending terminal portion and the cutting terminal portion. In the FFC terminal section which is extended to the FFC for the FFC coupling connector, A bent terminal portion having an extension extending in the same direction as the FFC and a bent portion inclined to the extension; And It includes a cutting terminal portion extending in the same direction as the FFC, The FFC terminal unit extending and connected to the FFC of the FFC coupling connector, characterized in that the bending terminal portion and the cutting terminal portion are alternately arranged repeatedly. A housing for an FFC coupling connector for electrically connecting an FFC with an electronic component having a header, Housing for the FFC coupling connector, characterized in that the fixing projection surface is formed at a position corresponding to the contact terminal of the header to secure the extension portion of the FFC inserted into the connection portion of the header with the terminal portion of the FFC coupling connector .
KR1020070109607A 2007-10-30 2007-10-30 Connector for joining with flexible flat cable KR20090043830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070109607A KR20090043830A (en) 2007-10-30 2007-10-30 Connector for joining with flexible flat cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070109607A KR20090043830A (en) 2007-10-30 2007-10-30 Connector for joining with flexible flat cable

Publications (1)

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KR20090043830A true KR20090043830A (en) 2009-05-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070109607A KR20090043830A (en) 2007-10-30 2007-10-30 Connector for joining with flexible flat cable

Country Status (1)

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KR (1) KR20090043830A (en)

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