CN1109646A

CN1109646A - Flat cable connector

Info

Publication number: CN1109646A
Application number: CN94117016A
Authority: CN
Inventors: 谷川淳一
Original assignee: Whitaker LLC
Current assignee: Whitaker LLC
Priority date: 1993-10-14
Filing date: 1994-10-11
Publication date: 1995-10-04
Anticipated expiration: 2014-10-11
Also published as: KR100229999B1; CN1038545C

Abstract

The invention provides a small flat cable connector which, without increasing the number of parts, can have high retaining strength to retain a flat cable. A plurality of contact elements 40 which are provided with contact parts 44 in a J shape in general are arranged in an insulation covering 10 at stipulated interval. Once external force F in the direction of drawing direction of a connector 1 is exerted on the flat cable 4 which is inserted into an inserting opening 14 of the insulation sleeve 10, the contact parts 44 bend and the back sides 56 of the contact parts 44 are contacted with the inner surface of the insulation sleeve 10, then the resistance from an inner surface 30 causes the friction force of the contact parts 44 against the flat cable 4 to increase, and causes the retaining force of the flat cable 4 to increase in turn.

Description

Flat cable connector

The present invention relates to a kind of electric connector, particularly a kind of flat cable connector, it has a plurality of contacts that are connected with flexible flat cable (FFC or FPC) end.

FFC is provided with a plurality of conductors to high-density, is rich in flexiblely, and good installation and operability is arranged.This is because the connector that connects with such FFC also is widely used in the electronic transaction machines such as tame electrical article such as compact disk and gamma camera, photocopier and facsimile machine with FFC.

As FFC connector in the past, for example open the motion that has just disclosed a kind of such connector in the clear 64-13682 communique real.This FFC in the past is to be connected and fixed between inwall with the superimposed insertion crossbeam shape contact in end of the tongue piece of slide block and FFC and insulating case with connector usually.

So with in the connector, owing to use slide block, must make volume become big at so in the past FFC, component number increases, thereby has such problem: promptly can not reach the requirement that will make the e-machine miniaturization recently, also be difficult to reduce cost.And because use slide block also there are the following problems: promptly because FFC usable zero insertion force or low insertion force insert, make FFC only depend on the elasticity of crossbeam shape contact to keep, its confining force is very little.

The objective of the invention is to solve in the past FFC with the problems referred to above that connector exists, providing a kind of and be easy to miniaturization, do not increase amount of parts just can be with the flat cable connector of high confining force maintenance FFC.

The feature of flat cable connector of the present invention is: the elongated flat cable insertion mouth along insulating case in flat cable connector is provided with a plurality of contacts, above-mentioned contact has the contact portion that is " J " shape substantially by die-cut formation, when pulling capacity is added to insert that above-mentioned flat cable inserts mouthful and with flat cable that the above-mentioned free end that is the contact portion of " J " shape substantially contacts on the time, the above-mentioned back side that is down " J " shape contact portion substantially combines with above-mentioned insulating case inwall.

With the power of drawing direction be added to insert that flat cable inserts mouthful and with flat cable that contact contact on after, the contact portion that is " J " shape substantially of contact is inclined to insulating case inwall one side of its rear side, the inwall combination promptly contacts therewith.Because flat cable bears the resistance that increases with being the friction of " J " shape contact portion substantially from the cover inwall, thereby the confining force of flat cable is increased significantly.

Preferred embodiment to flat cable connector of the present invention is elaborated below with reference to accompanying drawings.

Fig. 1 is a kind of embodiment of flat cable connector of the present invention, and wherein (A) is front view, (B) is bottom view, (C) is the sectional view along C-C line in (B).

To be expression insert intermediateness in the connector process of Fig. 1 with flat cable to Fig. 2, with the identical sectional view of Fig. 1 (c).

Fig. 3 is expression sectional view identical with Fig. 2 when being added to pulling capacity on the flat cable in the connector that inserts among Fig. 1.

Fig. 4 is the sectional view identical with Fig. 2 of expression another embodiment of flat cable connector of the present invention.

As seen from Figure 1, flat cable (calling FFC in the following text) comprises the insulating case 10 that is roughly cuboid with connector 1 and along a plurality of (being 10 in the present embodiment) contact 40 of vertical configuration of insulating case 10.On the one side 12 of insulating case 10, longitudinally form flat cable and insert mouth 14.And it is mouthfuls 14 interconnected that first through hole 18 that one side 12 and another side 16 connect and second through hole 20 are inserted therewith with the spacing of for example 1.25mm.Inserting mouth 14 has the conical surface 22,24,26 on its one side 12, FFC is inserted easily.On two jiaos an of end of insulating case 10, form and differentiate the conical surface 28,28 that polarity is used.

Contact 40 comprises: by the bottom 42 upwards contact portion 44 that is " J " shape substantially and the stabilizer 46 of elongation, from the bottom 42 downwards or the weldering tail 48(48 ' of side elongation).Contact portion 44 and stabilizer 46 are contained in respectively in the 1st through hole 18 and the 2nd through hole 20 of insulating case 10, and install across the 1st and the 2nd through hole 18,20 bottom 42.On bottom 42, form a pair of projection 50,50, be pressed into the inwall of insulating case 10 and combine.Forming bar shaped projection 52 on stabilizer 46, is the direction of stretching out of contact portion 44 by the state that decides contact 40 that contacts of the inwall with the 2nd through hole 20.The free end 54 that is the contact portion 44 of " J " shape is substantially advanced by leaps and bounds to insert in mouthfuls 14 and is constituted and FFC contacts.In addition, contact 40 and adjacent contacts 40 ' contact portion free end 54,54 ' be configured in different position (interconnected) along the direction of insertion of FFC.Thereby the insertion force of FFC is reduced.And adjacent contacts 40,40 ' weldering tail 48,48 ' also interconnected, this just easily forms and welds substrate weld zone (not shown) that tail 48,48 ' solder are connected.

As shown in Figure 2, after the elasticity that overcomes substantially the contact portion 44 that is " J " shape was inserted FFC4 in mouthfuls 14, contact portion 44 bent towards inwall 30.When inserting this FFC, to note not making the back side 56 of contact portion 44 to contact with the inwall 30 of first through hole 18.Because the back side 56 contacts with the inwall 30 of first through hole 18.Since the back side 56 do not contact with inwall 30 and contact portion free end 54,54 ' interconnected, and FFC4 can use than low insertion force and insert in the mouth 14.Also since the contact portion free end 54,54 that contacts with the conductor 6 of FFC4 ' on slightly form arc surface, can not damage the conductor 6 of FFC4.

In Fig. 3, after being added to the external force F that FFC4 is gone out from connector 1 drawing on the FFC4, the free end 54 of the contact portion 44 of contact 40 rotates to counter-clockwise direction, contact portion 44 is crooked to a side of the inwall 30 of the 1st through hole 18 simultaneously, and promptly the back side 56 of contact portion 44 contacts with inwall 30.Because make contact portion 44 bear resistance from inwall 30 by this inwall 30 and contacting of the back side 56, so another strong frictional engagement of inwall Final 32 of FFC4 and contact portion free end 54 and first through hole 18, FFC4 is difficult to break away from from connector 1.Thereby FFC4 may be increased significantly to the confining force or the anti-pull strength of connector 1.

Fig. 4 illustrates another embodiment of flat cable connector of the present invention.This flat cable connector 1 ' contact 60, its free end 64 is different with contact 40, other parts are then identical with contact 40.In following explanation the part identical with contact 40 use with contact 40 in identical symbol.Free end 64 hangs down longer than free end 54 to bottom 42.Become projection 65 with free end 54 corresponding parts, FFC4 inserts this projection 65 of back and electrically contacts with conductor 6.The free end 64 and contact portion 44 residing states of contact 60 when Fig. 4 illustrates FFC4 and do not insert.

This free end 64 that has prolonged is to protect the contact portion of contact 60 to be provided with again for the stronger while of confining force that makes FFC4.The free end 54 of contact 40 can only remain to the confining force of FFC4 to a certain degree among the last embodiment, and in a single day the pulling capacity that adds to FFC4 goes beyond the limit, and free end 54 just is out of shape to the drawing direction.That is to say that free end 54 will reverse upward, outstanding from the one side 12 of insulating case 10 to foreign side.Contact 60 does not deform as mentioned above, thereby can continue to keep very strong confining force because free end 64 is arranged.That is to say that in case the back side 56 of contact 60 contacts with inwall 30, projection 65 is pulled to the top of beginning in Fig. 4 to the drawing direction and moves, then the contact-making surface 66 of free end 64 just clockwise rotates with FFC4 and contacts.As a result, stoped projection 65 to be moved upward, made FFC4 continue to remain in the insulating case 10 simultaneously.

More than flat cable connector of the present invention is had been described in detail, but the present invention is not limited to the above embodiments, may carry out various distortion and change certainly as required.For example, the weldering tail of connector both can extend downwards, also can extend to opposite side.And the also available SMT(mounted on surface of weldering tail) type replaces the DIP type among the embodiment.The pillar that should be installed in the substrate orientation on the insulating case in order to give can also be set.Can also be willing to that disclosed key member adds on the insulating case in flat 4-23928 number with real.

As according to flat cable connector of the present invention, do not need the additional zero parts just can obtain keeping the flat cable connector of flat cable with high confining force.And compare with flat cable connector in the past, because do not need slide block, reduce and be easy to reduce production costs and the flat cable connector of miniaturization so can obtain number of components.

Claims

1, a kind of flat cable connector inserts along the elongated flat cable of insulating case and mouthful to be provided with a plurality of contacts, it is characterized in that:

Said contact has the contact portion that is " J " font substantially by die-cut formation;

When pulling capacity is added to insert said flat cable patchhole and with flat cable that the said free end that is " J " font contact portion substantially contacts on the time, the said back side that is down the contact portion of " J " font substantially combines with the inwall of said insulating case.