KR20180116892A - Electrical connecting structure for flat cable for improving contact reliablility - Google Patents

Abstract

The present invention relates to an electrical connecting structure for a flat cable with an improved contact reliability. Since a male housing is slantly inserted into a female housing by a protrusion portion when the male housing is inserted into the female housing, an opening portion of the male housing maintains a separate state from a first side portion of the female housing by a protruded length of the protrusion portion. Accordingly, a contact point of the flat cable located in the opening portion of the male housing is not scratched by a conductor located in the first side portion of the female housing such that the surface of the contact point is not scratched, and a contact reliability between the contact point and the conductor can be improved.

Description

TECHNICAL FIELD [0001] The present invention relates to an electrical connection structure for a flat cable having improved contact reliability,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connection structure for a flat cable having improved contact reliability, and more particularly, to a flat cable having an improved contact reliability, To an electrical connection structure for a cable.

2. Description of the Related Art [0002] Generally, as electronic equipment has become smaller and more highly integrated, the importance of a printed circuit board (PCB) electronic assembly system using surface mounting technology (SMT) has been increasing. The SMT system is an electronic assembly system that assembles surface mount components to a printed circuit board. By the development of parts manufacturing technology such as miniaturization and high density of electronic components and automation of assembly line automation, It has been adopted in product manufacturing lines.

Surface mount technology is a technique in which a lead of a component (a pin protruding from a component) is attached to the surface of a component by a soldering material or the like without inserting it into the hole of the PCB (substrate) , surface mount device). Chip components such as resistors, capacitors, transistors, and coils, connectors for flat cables, semiconductor devices such as 1C, and switches for surface mounting. These parts are made in shape and size suitable for automatic mounting and are standardized for compatibility.

1 is a view showing a connector for a conventional flat cable. Referring to FIG. 1, a conventional flat cable connector includes a housing 10, and the housing 10 is soldered to a printed circuit board 10a. A flat cable 1 such as an FFC (Flexible Flat Cable) or an FPC (Flexible Printed Circuit) is inserted into the housing 10. The housing 10 has a plurality of leads 11 connected to the contacts 2 of the flat cable 1 and a plurality of leads 11 extend to the outside of the housing 10 to be connected to the printed circuit board 10a Soldering. When the flat cable 1 is inserted into the housing 10, an actuator (not shown) is inserted into the housing 10. Then, the actuator presses the flat cable 1 and is electrically connected to the lid 11 of the housing 10.

However, since the actuator merely serves to press the flat cable 1, there is no function of fixing the flat cable 1 to the housing 10 and the external impact is transmitted to the flat cable 1 or the housing 10 There is a problem that the flat cable 1 is easily detached from the housing 10.

In the process of inserting the flat cable 1 into the housing 10, the contact 2 of the flat cable 1 is inserted in a state of being in tight contact with the lid 11 of the housing 10, The surface of the contact 2 of the housing 10 is scratched by the lead 11 of the housing 10. This causes a problem of contact failure or short circuit between the contact 2 and the lead 11. [

Korean Registered Utility Model No. 20-0289778

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to provide an electrical connection structure for a flat cable having improved contact reliability for firmly securing the flat cable to the housing, .

It is another object of the present invention to provide a flat cable in which the contact of the flat cable is not brought into contact with the conductor of the housing during the sliding insertion of the flat cable along the inside of the housing, So as to improve contact reliability between the contact of the flat cable and the conductor of the housing, and to provide an electrical connection structure for a flat cable having improved contact reliability.

According to an aspect of the present invention, there is provided a flat cable having a contact at an end thereof. And a housing main body having a cable insertion portion formed in a concave shape for inserting an end of the flat cable and having an opening at a position opposite to the contact of the cable insertion portion; And a female housing having a housing insertion portion into which the mail housing is inserted and a conductor provided in a first side portion facing the opening portion of the housing insertion portion to be in contact with the contact, Wherein when the mailsection is inserted into the housing inserting portion, the opening portion is kept spaced apart from the housing inserting portion by a protruded length of the protrusion portion, and when the mail housing is inserted into the housing inserting portion, Wherein when the housing is inserted into the housing insertion portion, a receiving portion is formed to receive the protrusion at a position opposite to the protrusion of the first side portion, and the contact provided in the opening portion is configured to contact the conductor. An electrical connection structure for a flat cable having improved reliability is provided.

The electrical connection structure for a flat cable with improved contact reliability according to any one of claims 1 to 3, wherein a guide portion is provided along both longitudinal sides of the housing main body, and a sliding guide portion is provided on both sides of the housing insertion portion so that the guide portion is slidably guided. Lt; / RTI >

Preferably, the sliding guide portion is recessed to receive the guide portion, and the guide portion includes a first guide portion and a second guide portion sequentially in the longitudinal direction of both sides of the housing body, And the second guide portion is formed to have a width larger than the width of the first guide portion to slide along the sliding guide portion, and the opening portion is formed to have a width smaller than the width of the housing insertion portion, The first guiding part and the second guiding part are slid along the sliding guide part in a state of being inclined when the first guiding part and the second guiding part are inserted into the housing inserting part in a state where the first guiding part and the second guiding part are inserted into the housing inserting part, When the second guide portion is received in the receiving portion, While maintaining the length of the horizontal direction and in contact reliability, characterized in that in contact with both sides of the sliding guide portion provides an improved electrical connection structure for the flat cable.

In addition, a guide inclined portion may be formed so that a side portion of the side portion of the first guide portion, which is opposite to the protruding portion, is inclined, and the guide inclined portion abuts against the guide inclined portion of the sliding guide portion. And the guide inclined portion is moved along the longitudinal direction of the sliding guide portion when the first guide portion is slid along the sliding guide portion in an inclined state. Thereby providing an electrical connection structure.

In addition, a coupling hole is formed in the mail housing, and when the mail housing is inserted into the mail housing, a coupling protrusion is formed to be inserted into and engaged with the coupling hole at a position facing the coupling hole of the mail housing The present invention provides an electrical connection structure for a flat cable with improved contact reliability.

The housing body may include a first side portion having the opening portion, a second side portion positioned to face the first side portion, a cable insertion portion provided between the first side portion and the second side portion, And a cantilever which includes an opening serving as an inlet of the cable insertion portion and protrudes toward the other end of the second side portion while being supported by the one end of the second side portion located in the opposite direction of the opening, And an engagement hole is formed in the cantilever.

The cantilever may further include a protrusion guiding part formed at one end of the cantilever concave in the direction of the other end of the cantilever, the protrusion guiding part not facing the second side surface of the cantilever being open to the outside, Wherein the engaging hole formed in the housing is positioned on the same line as the longitudinal direction of the protrusion guiding portion and when the mail housing is inserted into the housing inserting portion, the engaging projection is guided along the protrusion guiding portion, The present invention provides an electrical connection structure for a flat cable having improved contact reliability.

In addition, when the mail housing is inserted into the female housing, the engaging projection is guided by the engaging hole while being guided by the engaging projection, and the end of the engaging guide is positioned toward the engaging hole, A second inclined portion is formed at a position facing the first inclined portion of the engaging projection so that when the engaging projection is guided from the projection guide to the engaging hole, And is guided to the coupling hole after being slid along the inclined portion. The electrical connection structure for a flat cable with improved contact reliability is provided.

The cantilever may further include a first cantilever connected to one end of the second side portion along a longitudinal direction of the cantilever and a second cantilever beam formed to have a width larger than that of the first cantilever, The first cantilever beam and the second cantilever beam are slid along the sliding guide portion in a state where the first cantilever beam and the second cantilever beam are inclined while being spaced apart from the housing insertion portion by a protruded length of the housing, And the second cantilever is contacted with the second side surface portion while maintaining a horizontal state with respect to the longitudinal direction of the second side surface portion when the protrusion is inserted into the insertion portion and received in the receiving portion. Thereby providing an electrical connection structure.

The electrical connection structure for a flat cable having improved contact reliability is characterized in that an end portion of the cantilever is bent so as to be hooked on a rim of the housing insertion portion in a state where the mail housing is inserted into the housing insertion portion. to provide.

Bending recesses are formed on both sides of the bent portion positioned in a direction perpendicular to the longitudinal direction of the cantilever, and bending protrusions are formed on both sides of the other end of the second side face portion so as to be accommodated in the bent recesses, Wherein when the cantilever is moved in a direction away from the second side portion, the bending recess is caught by the bending protrusion, thereby limiting the movement of the cantilever, thereby providing an electrical connection structure for a flat cable having improved contact reliability .

The housing body may include a first side portion having the opening portion, a second side portion positioned to face the first side portion, a cable insertion portion provided between the first side portion and the second side portion, Wherein the flat cable is provided with a latching protrusion at a position opposite to the latching protrusion of the flat cable so that the flat cable is inserted into the mating housing, The locking protrusion is inserted into the engaging portion and is engaged with the engaging protrusion, thereby providing an electrical connection structure for a flat cable having improved contact reliability.

The electrical connection structure for a flat cable having improved contact reliability is characterized in that the locking protrusion is formed so as to be inclined so as to have a larger cross-sectional area in a direction in which the flat cable is inserted.

In addition, a concave portion is formed on one side of the opening portion facing the opening portion so as to be concave in the direction of the opening portion, and an elastic supporting portion is protruded from the bottom portion of the concave portion in a direction away from the opening portion, The present invention provides an electrical connection structure for a flat cable having improved contact reliability.

The connector further includes a fixed portion fixed to the female housing and formed in a "U " shape so as to have elasticity, and an extended contact portion extending from the end portion of the fixed portion in the direction of the opening portion. An electrical connection structure for a flat cable having improved reliability is provided.

A guide rail is protruded from an outer surface of the mail housing along a direction in which the mail housing is inserted into the mail housing, and a rail guide groove is formed in the mail housing to guide the guide rail. An electrical connection structure for a flat cable with improved contact reliability is provided.

The flat cable has a hooking part formed on the flat cable and a locking protrusion formed on the mailshell so as to be inserted into the mating part. Thus, the flat cable has an effect of firmly holding the hooked state in the mailshell.

Further, since the locking protrusion is formed to be inclined, and is formed to have elasticity by the elastic supporting portion, the locking protrusion can be easily inserted into the locking portion of the flat cable.

Further, when the mail housing is inserted into the female housing, the mail housing is inserted obliquely into the female housing by the projecting portion, so that the opening of the mail housing is separated from the first side of the female housing by the projected length of the projecting portion So that the contact of the flat cable located at the opening of the mail housing is not scratched by the conductor located at the first side of the female housing and scratches are not generated on the surface of the contact, The contact reliability between the conductors is improved.

Further, in the process of inserting the mail housing into the mail housing, the guide portion of the mail housing is slid along the slidable guide portion in an inclined state. At this time, the first guide portion of the guide portion is formed to have a smaller width than the slidable guide portion , The first guide portion has an effect of sliding easily along the sliding guide portion in an inclined state.

When the mail housing is inserted into the female housing, the second guide portion of the guide portion is formed to be larger than the width of the first guide portion. Thus, the second guide portion is in contact with both sides of the sliding portion while maintaining a horizontal state with respect to the longitudinal direction of the sliding portion, The mail housing is no longer returned to the tilted state, and therefore electrical contact between the contact of the flat cable and the conductor is maintained firmly.

1 is a view showing a connector for a conventional flat cable.
2 is a view schematically showing an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention.
3 is an exploded perspective view schematically showing the rear of a flat cable and a mail housing of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention.
4 is an exploded perspective view schematically showing the front of a flat cable and a mail housing of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention.
5 is a view schematically illustrating a female housing of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention.
FIG. 6 is a view schematically showing a cross section AA 'of FIG. 5. FIG.
FIG. 7 is a view schematically showing a cross section BB 'of FIG. 5. FIG.
8 is a view for explaining a state in which the flat cable of the electrical connection structure for a flat cable having improved contact reliability and the mail housing are coupled according to a preferred embodiment of the present invention.
FIG. 9 is a plan view for explaining a state in which a flat cable of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention is coupled to a flattened cable so as to be coupled to the female housing at an angle.
10 (a) is a view schematically showing a CC 'section of FIG. 9, and FIG. 10 (b) is a view schematically showing a DD' section of FIG.
11 (a) is a view schematically showing a state in which the mail housing of FIG. 10 (a) is completely inserted into the mail housing, FIG. 11 (b) Fig. 1 is a view schematically showing a state in which a mail is inserted into a housing; Fig.

Hereinafter, an electrical connection structure for a flat cable having improved contact reliability according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view schematically showing an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention.

 2, an electrical connection structure 1000 for a flat cable having improved contact reliability according to a preferred embodiment of the present invention includes a flat cable 100, a mail housing 200 into which the flat cable 100 is inserted, And a female housing (300) to which the mail housing (200) is inserted and is electrically connected to the flat cable (100).

Fig. 3 is an exploded perspective view schematically showing a rear side of a flat cable and a mail housing of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention, Fig. 4 is a cross- Fig. 3 is an exploded perspective view schematically showing a front side of a flat cable and a mail housing of an electrical connection structure for a flat cable with improved reliability.

3, the flat cable 100 is formed of an FFC (Flexible Fat Cable) or an FPC (Flexible Printed Circuit). The flat cable 100 is formed in the form of a thin film for electrically connecting the respective components in a cellular phone, a computer, a printer, a scanner, a monitor, and an automobile electrical component. The flat cable 100 is widely used for various electronic products which are required to have high density wiring in a limited space because they can be made thin and thin as well as flexible such as bending, overlapping, folding, curling and twisting. The flat cable 100 is provided at its one end with a contact 110 for electrical contact with a conductor 310 described later. The engaging portion 120 is formed such that the engaging protrusion 212d is inserted into a position opposite to the engaging protrusion 212d of the flat cable 100 described below. The engaging portion 120 may be formed in a hole shape.

The mail housing (200) includes a housing body (210) and a cantilever (220). The housing main body 210 includes a cable insertion portion 210a having an internal space for inserting the flat cable 100 and a cable insertion portion 210b for opening and closing the cable insertion portion 210a to serve as an inlet through which the flat cable 100 is inserted. An opening portion 210b formed so as to be in contact with the guide portion 216, and a guide portion 216. [ Both sides of the cable insertion portion 210a are positioned such that the first side portion 212 and the second side portion 214 face each other. The opening 212a, the recess 212b, the elastic support 212c, and the protrusion 213 are formed on the first side surface 212. The open portion 212a is formed at a position opposite to the contact 110 of the first side portion 212 when the flat cable 100 is inserted into the cable insertion portion 210a, The contact 110 positioned in the cable insertion portion 210a is exposed to the outside of the cable insertion portion 210a. The concave portion 212b and the elastic support portion 212c will be described with reference to FIG. The protruding portions 213 are formed on both sides of the opening portion 212a of the first side surface portion 212 in the direction of the female housing 300. The protrusion 213 separates the opening 212a from the female housing 300 by the protruded length of the protrusion 213 when the mail housing 200 is inserted into the female housing 300, Will be described in detail with reference to FIGS. 10 to 11. FIG.

Referring to FIG. 4, a guide rail 214a and a bending protrusion 219 are formed on a second side surface 214 of the housing main body 210. The guide rail 214a is protrudingly formed on both sides in the longitudinal direction of the second side surface portion 214 so as to be slidably guided in a rail guide groove 306 (shown in FIG. 5) described later. The bending protrusion 219 is protruded to be accommodated in a bending recess 226a described later on both sides of an end portion near the opening portion 212a of the second side surface portion 214. [

A side wall portion 215 is provided on both sides between the first side surface portion 212 and the second side surface portion 214 and a guide portion 216 is protruded along the longitudinal direction of the side wall portion 215. The guide portion 216 is slid in a state guided by a sliding guide portion 304 (see FIG. 5) to be described later. The first guide portion 217 and the second guide portion 217 are formed along the longitudinal direction of the side wall portion 215, (218). The first guide portion 217 protrudes in the direction of the opening 210b while being connected to one end of the side wall portion 215. [ The second guide part 218 is protruded from the first guide part 217 so as to be close to the opening part 210b. The first guide part 217 is formed to have a smaller width than a width of a sliding guide part 304 to be described later and the second guide part 218 is formed to have a width Is formed to have a width larger than the width of the guide portion (217). The width refers to the same direction as the width in the longitudinal direction of the side wall portion 215. A guide inclined portion 217a is formed so that the side portion of the first guide portion 217 provided on the end portion opposite to the protruding portion 213 is inclined.

The cantilever 220 is formed to protrude in a direction to be close to the opening 210b while being supported by one side of the outer surface of the second side surface portion 214 positioned in the opposite direction of the opening portion 210b. At this time, the cantilever 220 is positioned between the pair of guide rails 214a formed on the second side surface portion 214. The cantilever 220 has elasticity because one end of the cantilever 220 is supported by the second side surface 214 and the other end is not supported at the other end. The cantilever 220 is provided with a first cantilever 222 and a second cantilever 224 in order along its longitudinal direction. The first cantilever beam 222 is protruded toward the other end of the second side surface portion 214 in the direction of the opening 210b while being connected to one end portion of the second side surface portion 214 positioned opposite to the opening portion 210b. The second cantilever beam 224 is protruded from the first cantilever beam 222 so as to approach the opening 210b. At this time, the second cantilevers 224 are formed to have a larger width than the first cantilevers 222. Here, the width refers to a direction away from the second side portion 214 in the vertical direction. The first cantilever beam 222 has a protrusion guide portion 223 and a first inclined portion 223a and the second cantilever beam 224 has a coupling hole 224a and a bent portion 226. [ The projection guide 223 is recessed in the other end direction at one end of the first cantilever 222 far from the opening 210b. The outer side of the projection guide portion 223, which is not opposed to the second side surface portion 214, is formed to be open. The first inclined portion 223a is formed to be inclined at the end of the projection guide portion 223 which is positioned to face the engagement hole 224a described later. The coupling hole 224a is formed through the second cantilever 224 and is positioned on the same line as the longitudinal direction of the projection 223. [ The bent portion 226 is formed to be bent at the distal end of the second cantilever beam 224 in the outward direction of the second side surface portion 214. When the mail housing 200 is inserted into the housing insertion portion 302 of the female housing 300, the bent portion 226 is caught by the rim of the opening 210b. Both sides of the bent portion 226 positioned in the direction perpendicular to the longitudinal direction of the second cantilever beam 224 are formed with concave bending recesses 226a. The bending concave portion 226a may be engaged with the bending protrusion 219 so that the movement of the cantilever 220 may be shifted by the bending concave portion 226a when the cantilever 220 is arbitrarily moved in the direction away from the second side portion 214 Restricted.

FIG. 5 is a schematic view for explaining a female housing of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention, and FIG. 6 is a cross- And FIG. 7 is a view schematically showing a cross section BB 'of FIG.

3 to 7, the female mail housing 300 includes a housing insertion portion 302 for inserting the mail housing 200 therein, and a conductor 310 is provided at the bottom of the housing insertion portion 302 . The housing insertion portion 302 has a first side portion 302a and a second side portion 302b positioned opposite to the opening portion 212a of the mail housing 200 when the mail housing 200 is inserted, And a second side 302b positioned therein. The first side 302a is provided with a conductor 310 and the second side 302b is provided with a coupling protrusion 303 and a rail guide groove 306. The sliding guide portion 304 is concavely formed on both sides of the first side portion 302a and the second side portion 302b so that the guide portion 216 is guided.

The conductor 310 is in electrical contact with the contact 110 of the flat cable 100 and is fixed to the bottom of the first side 302a of the female housing 300 and is rounded in a "U" And an extended contact portion 314 extending in the direction of the opening portion 212a at the end portion of the fixing portion 312. [ The extended contact portion 314 is in electrical contact with the contact 110 of the flat cable 100 which is guided in the direction of the opening portion 212a.

The engaging protrusion 303 is provided at a position opposite to the engaging hole 224a of the second side portion 302b when the mail housing 200 is inserted into the housing insertion portion 302 of the female housing 300. [ Is inserted into the hole 224a so as to be engaged with the hole. A second inclined portion 303a is formed at a position facing the first inclined portion 223a of the engaging projection 303 so that the engaging projection 303 is moved along the projection guide portion 223, The second inclined portion 303a is slid along the first inclined portion 223a and then guided to the engaging hole 224a.

The rail guide groove 306 is formed at a position opposite to the guide rail 214a of the second side portion 302b when the mail housing 200 is inserted into the housing insertion portion 302 of the female housing 300, (214a) is guided.

The sliding guide portion 304 is configured to guide the guide portion 216 of the mail housing 200 when the mail housing 200 is inserted into the housing insertion portion 302 of the female housing 300 And the second side portion 302b. A guide inclined portion 217a is formed at one side of the sliding guide portion 304 facing the guide inclined portion 217a in a state where the mail housing 200 is inserted into the housing insertion portion 302 of the female housing 300. [ The inclined guide portion 304b is protruded. The receiving portion 304a is recessed so that the protruding portion 213 is accommodated in the other side of the sliding guide portion 304 facing the protruding portion 213. The receiving portion 304a is recessed in the direction of the first side portion 302a from the sliding guide portion 304. [

Hereinafter, a coupling process of an electrical connection structure for a flat cable with improved contact reliability according to a preferred embodiment of the present invention will be described.

8 is a view for explaining a state in which the flat cable of the electrical connection structure for a flat cable having improved contact reliability and the mail housing are coupled according to a preferred embodiment of the present invention.

Referring to FIG. 8, the flat cable 100 is inserted into the cable insertion portion 210a of the mail housing 200. At this time, a locking protrusion 212d is protruded from the opening 210b and the opening 212a of the first side portion 212 of the mailshell 200 to the engaging portion 120 of the flat cable 100 And a locking projection 212d is inserted and engaged. The flat cable 100 has a locking protrusion 212d formed in the flat cable 100 so that the locking protrusion 120 is formed in the flat cable 100 and the locking protrusion 212d is inserted into the locking protrusion 120 of the mailshell 200. Thus, In a state in which it is latched in a state of being held.

The first opening 212a is located near the opening 210b of the mail housing 200 into which the flat cable 100 is inserted. The first opening 212a is recessed in a direction approaching the opening 210b, And an elastic support portion 212c having elasticity in a direction away from the opening portion 210b is protruded from the bottom of the recess 212b. The latching protrusion 212d is protruded in the direction of the flat cable 100 to the elastic supporting portion 212c. The locking protrusion 212d is formed to be inclined so that the cross-sectional area becomes wider toward the direction in which the flat cable 100 is inserted so that when the flat cable 100 is inserted into the mail housing 200, The elastic supporting portion 212c is elastically deformed in the opposite direction to the flat cable 100 and then the locking protrusion 212d is engaged with the engaging portion 120 of the flat cable 100 As shown in Fig.

9 is a plan view for explaining a state in which a flat cable of an electrical connection structure for a flat cable having improved contact reliability according to a preferred embodiment of the present invention is coupled to a female housing to which a flat cable is coupled, (A) is a view schematically showing a CC 'cross section in Fig. 9, and Fig. 10 (b) is a view schematically showing a DD' cross section in Fig.

Referring to FIGS. 9, 10A and 10B, when the mail housing 200 is inserted into the housing insertion portion 302 of the female housing 300, The protruding portion 213 of the mail housing 200 lifts the first side portion 212 of the mail housing 200 toward the second side portion 302b of the female housing 300 so that the front end of the mail housing 200 Is inserted into the female housing 300 in an inclined state. The opening portion 212a of the mail housing 200 facing the first side portion 302a of the female housing 300 is connected to the first side portion of the female housing 300 by the protruded length of the protrusion 213 302a.

When the mail housing 200 is inserted into the female housing 300 as described above, the male housing 200 is inserted obliquely into the female housing 300 by the projecting portion 213, The protruding portion 212a is spaced apart from the first side portion 302a of the female housing 300 by the protruding length of the protruding portion 213. [ The contact 110 of the flat cable 100 located at the opening 212a of the mail housing 200 is not scratched by the conductor 310 located at the first side 302a of the female housing 300 , Scratches are not generated on the surface of the contact 110, thereby improving contact reliability between the contact 110 and the conductor 310.

The guide portion 216 of the mail housing 200 is slid along the sliding guide portion 304 in an inclined state in the process of inserting the mail housing 200 into the female housing 300. [ The first guide portion 217 of the guide portion 216 is formed to have a width smaller than that of the sliding guide portion 304 so that the first guide portion 217 is slanted along the sliding guide portion 304 There is an effect of sliding easily.

 11 (a) is a view schematically showing a state in which the mail housing of FIG. 10 (a) is completely inserted into the mail housing, FIG. 11 (b) Fig. 1 is a view schematically showing a state in which a mail is inserted into a housing; Fig.

11A and 11B, when the mail housing 200 inserted into the housing insertion portion 302 of the mail housing 300 is advanced in the direction of the conductor 310 The projecting portion 213 of the mail housing 200 is received in the receiving portion 304a of the mail housing 300 so that the first side portion 212 of the mail housing 200 is no longer diagonally spaced, And contacts the first side 302a of the housing 300. At this time, the opening 212a of the mail housing 200 facing the first side 302a of the female housing 300 is positioned to face the first side 302a, The contact 110 of the flat cable 100 is in electrical contact with the conductor 310 located on the first side 302a of the female housing 300. [

When the mail housing 200 is inserted into the female housing 300, the second guide portion 218 of the guide portion 216 is formed to be larger than the width of the first guide portion 217, (218) are in contact with both sides of the sliding portion while maintaining a horizontal state with respect to the longitudinal direction of the sliding portion. When the mail housing 200 is inserted into the female housing 300, the second guide portion 218 is brought into contact with both sides of the sliding portion, so that the mail housing 200 is no longer returned to the oblique state, So that the electrical contact between the contact 110 of the connector 100 and the conductor 310 is firmly maintained.

When the mail housing 200 is inserted into the female housing 300, the engagement protrusion 303 of the female housing 300 is moved along the protrusion guide portion 223 of the mail housing 200, Is inserted into the hole 224a and is engaged with the coupling hole 224a. The bending portion 226 of the mail housing 200 is positioned at the edge of the housing insertion portion 302 of the female housing 300, that is, at the entrance of the housing insertion portion 302, Do not move forward.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. It should be understood that the technical idea belonging to the scope of the claims also belongs to the present invention.

1000: Electrical connection structure for flat cable with improved contact reliability
100: Flat cable 110: Contact
120: engaging portion 200: mail housing
210: housing main body 210a: cable insertion portion
210b: opening 212: first side surface
212a: opening portion 212b:
212c: elastic support portion 212d:
213: protrusion 214: second side surface
214a: guide rail 215:
216: guide portion 217: first guide portion
217a: guide inclined portion 218: second guide portion
219: bending protrusion 220: cantilever
222: first cantilever 223: projection guide
223a: first inclined portion 224: second cantilever
224a: engaging hole 226:
226a: bending recess 300: female housing
302: housing insertion portion 302a: first side
302b: second side portion 303: engaging projection
303a: second inclined portion 304: sliding guide portion
304a: receiving portion 304b: inclined guide portion
306: rail guide groove 310: conductor
312: fixing part 314: extension contact part

Claims (16)

A flat cable having a contact at an end thereof;
And a housing main body having a cable insertion portion formed in a concave shape for inserting an end of the flat cable and having an opening at a position opposite to the contact of the cable insertion portion; And
And a female housing having a housing inserting portion into which the mail housing is inserted and a conductor provided on a first side portion of the housing inserting portion which is in contact with the contact portion,
A protruding portion protruding from the distal end of the housing main body in the direction of the first side,
When the mail housing is inserted into the housing insertion portion, the opening portion is maintained in a state of being spaced apart from the housing insertion portion by a protruded length of the projection portion,
When the mail housing is inserted into the housing insertion portion, a receiving portion is formed to receive the protrusion at a position opposite to the protrusion of the first side portion, and the contact provided in the opening portion is configured to be in contact with the conductor Wherein the electrical connection structure for a flat cable has improved contact reliability.
The method according to claim 1,
A guide portion is provided along both longitudinal sides of the housing main body,
Wherein the sliding guide portion is provided on both sides of the housing insertion portion such that the guide portion is slidably guided.
3. The method of claim 2,
The sliding guide portion is concavely formed to receive the guide portion,
The first guide part and the second guide part are formed to have a width smaller than the width of the sliding guide part, and the second guide part has a first guide part and a second guide part, Wherein the first guide portion is formed to have a width larger than a width of the first guide portion so as to slide along the sliding guide portion,
The first guide portion and the second guide portion are slid along the sliding guide portion in a state where the first guide portion and the second guide portion are inclined when the opening portion is inserted into the housing insertion portion in a state where the opening portion is spaced apart from the housing insertion portion by a protruded length of the protrusion,
Wherein the second guide portion is in contact with both sides of the sliding guide portion while maintaining a horizontal state with respect to the longitudinal direction of the sliding guide portion when the mail housing is inserted into the housing insertion portion and the protrusion is received in the receiving portion. Electrical connection structure for flat cable with improved reliability.
The method of claim 3,
A guide inclined portion is formed at an end portion of the first guide portion so as to be inclined with respect to the side portion of the opposite side portion,
A slant guide portion is formed at a position of the sliding guide portion facing the guide slant portion so that the guide slant portion abuts on the slant guide portion,
Wherein the guide inclined portion is moved along the longitudinal direction of the sliding guide portion when the first guide portion is slid along the sliding guide portion in an inclined state.
The method according to claim 1,
The mail housing is provided with a coupling hole,
And an engaging protrusion is formed to be engaged with the engaging hole so as to be engaged with the engaging hole at a position opposite to the engaging hole of the female housing when the mail housing is inserted into the female housing. Connection structure.
6. The method of claim 5,
The housing body includes a first side portion having the opening portion, a second side portion positioned to face the first side portion, the cable insertion portion provided between the first side portion and the second side portion, And an opening serving as an inlet of the insertion portion,
And a cantilever protruding toward the other end of the second side portion in a state of being supported by one end of the second side portion positioned in a direction opposite to the opening portion, wherein a coupling hole is formed in the cantilever. Electrical connection structure for improved flat cable.
The method according to claim 6,
The cantilever has a protruding guide portion recessed in the direction of the other end of the cantilever connected to the second side surface portion. The protruding guide portion, which is not opposed to the second side surface portion, is opened to open. The engaging hole is located on the same line as the longitudinal direction of the projection guide,
Wherein the engaging projection is guided along the projection guide and then engaged with the engaging hole when the mail housing is inserted into the housing inserting portion.
8. The method of claim 7,
Wherein when the mail housing is inserted into the female housing, the engaging projection is guided to the engaging hole while being guided by the engaging projection, and the end of the engaging projection is positioned toward the engaging hole, And a second inclined portion is formed at a position facing the first inclined portion of the engaging projection so that when the engaging projection is guided from the projection guide to the engaging hole, the second inclined portion is inclined to the first inclined portion And is guided to the coupling hole after the sliding movement of the flat cable.
The method according to claim 6,
Wherein the cantilever has a first cantilever connected to one end of the second side portion along a longitudinal direction thereof and a second cantilever formed to have a width larger than that of the first cantilever,
The first cantilever beam and the second cantilever beam are slid along the sliding guide part when the opening part is inserted into the housing insertion part in a state where the opening part is spaced apart from the housing insertion part by a protruded length of the protruding part,
Wherein the second cantilever is in contact with the second side surface while maintaining a horizontal state with respect to a longitudinal direction of the second side surface portion when the mail housing is inserted into the housing insertion portion and the protrusion is received in the receiving portion. Electrical connection structure for flat cable with improved reliability.
The method according to claim 6,
And an end portion of the cantilever is bent to be hooked on a rim of the housing insertion portion in a state where the mail housing is inserted into the housing insertion portion.
11. The method of claim 10,
Both sides of the bent portion positioned in the direction perpendicular to the longitudinal direction of the cantilever are formed with concave bending recesses,
And bending protrusions are formed on both sides of the other end of the second side portion so as to be accommodated in the bending recess,
Wherein when the cantilever is moved in a direction away from the second side portion, the bending recess is caught by the bending protrusion, thereby limiting movement of the cantilever.
The method according to claim 1,
The housing body includes a first side portion having the opening portion, a second side portion positioned to face the first side portion, the cable insertion portion provided between the first side portion and the second side portion, And an opening serving as an inlet of the insertion portion,
A locking protrusion is formed on the inner surface of the first side portion and a locking portion is formed at a position opposite to the locking protrusion of the flat cable so that when the flat cable is inserted into the mail housing, Wherein the electrical connection structure of the flat cable has improved contact reliability.
13. The method of claim 12,
Wherein the engaging protrusion is inclined so that a cross-sectional area thereof becomes wider toward a direction in which the flat cable is inserted.
13. The method of claim 12,
A recessed portion is formed at one side of the opening portion facing the opening portion so as to be concave in the direction of the opening portion and an elastic supporting portion is formed at a bottom portion of the recessed portion in a direction away from the opening portion,
Wherein the engaging protrusion is formed on the elastic support portion.
The method according to claim 1,
Characterized in that the conductor includes a fixing part fixed to the female housing and formed in a "U " shape so as to have elasticity, and an extension contact part extending from the end of the fixing part in the direction of the opening part. Electrical connection structure for improved flat cable.
The method according to claim 1,
A guide rail protrudes from an outer surface of the mail housing along a direction in which the mail housing is inserted into the mail housing,
Wherein the female housing is formed with a rail guide groove for guiding the guide rail. ≪ RTI ID = 0.0 > 18. < / RTI >

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