JP3223447B2 - Double-sided FPC / FFC connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a flexible printed circuit board (FPC) and a flexible flat cable (FFC).
Is connected to a contact group supported by the insulator.

[0002]

2. Description of the Related Art FPC / FFC connectors (FPC / FFC connectors) are conventionally known in various types, but the FPC / FFC itself has a land group on only one side, and has both sides. A type having a land group is not used. However, in order to increase the board mounting density and enable multi-pole development, it is desirable that the FPC / FFC be a double-sided type.

[0003]

An object of the present invention is to provide a double-sided FPC / FFC which can easily and surely connect a land group on the front and back of the FPC / FFC to a contact group on the substrate side when the FPC / FFC is a double-sided type.
An object is to obtain an FFC connector.

[0004]

SUMMARY OF THE INVENTION According to one aspect of the present invention, a double-sided FPC / FFC connector includes an FPC / FFC having land groups aligned on both front and back surfaces; an insulator having an insertion groove of the FPC / FFC;
/ Front contact group and back contact group which are respectively located above and below the / FFC insertion groove and are soldered on the substrate;
And an actuator for elastically deforming one of the front contact group and the rear contact group at a non-contact position with the FPC / FFC land group inserted into the FPC / FFC insertion groove of the insulator. A pressing wall that presses one of the front contact group and the back contact group to elastically deform the actuator to a non-contact position with the land group of the FPC / FFC; a front contact group and a back contact group And a free groove group provided on the pressing wall, the other of which is fitted to be relatively movable.

[0005]

It is practical to arrange the front contact group and the back contact group such that the upper and lower corresponding contacts are located on the same plane.

[0007]

[0008]

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An FPC (/ FF) used in this embodiment
C) 10 has a front surface land 11 group and a back surface land 12 group to be connected to the contact group on the front and back of the end. The front surface land 11 group and the back surface land 12 group are respectively
It is connected to a predetermined printed circuit or an electric / electronic element according to the properties of the double-sided FPC 10.

An insulator 20 made of an insulating material and fixed on the substrate B has an FPC (/ FF) substantially parallel to the substrate B.
C) It has an insertion groove 21 and an actuator insertion groove 22 orthogonal to the extension surface of the FPC insertion groove 21. In the insulator 20, a group of front contact storage grooves 23 and a group of back contact storage grooves 24 are arranged in a positional relationship orthogonal to both the FPC insertion groove 21 and the actuator insertion groove 22, respectively. Contact storage groove 23 group and back contact storage groove 2
A part of each of the four groups communicates with the top and bottom of the FPC insertion groove 21. The upper and lower corresponding front contact storage grooves 23 and rear contact storage grooves 24 are located on the same plane. An actuator guide hole 25 is formed in the insulator 20 so as to be located outside both ends in the longitudinal direction of the FPC insertion groove 21.

The front contact housing grooves 23 and the rear contact housing grooves 24 of the insulator 20 are respectively provided.
A group of front contacts 30 and a group of rear contacts 40 are inserted (press-fitted). Each surface contact 30 has, in order, a leg 31 for soldering to a land BFL for surface contact on the substrate B, a vertical extension 32, a horizontal extension 33, and a folded elastic contact leg 34. The tip of the elastic contact leg 34 faces the FPC insertion groove 21.

Each contact 40 for the back surface is sequentially connected to the substrate B
Upper leg 41 for soldering to the back contact land BRL
, The horizontal extension folded portion 42 and the folded elastic contact leg 4
3 and a folded elastic contact leg 4 having a pressed end 44.
3 faces the FPC insertion groove 21, and the pressed end 44 faces the actuator insertion groove 22. The front contact land BFL group and the back contact land BRL group are respectively connected to a predetermined printed circuit or an electric / electronic element.

The actuator 50 made of an insulating material is
A pressing wall 51 inserted into the actuator insertion groove 22 of the insulator 20 and a pair of actuator guide holes 2
5 has a guide bar 52 and an operation unit 53 integrally. The pressing wall 51 is provided in the actuator insertion groove 2.
2 has a function of pressing the pressed end portion 44 of the rear surface contact group 40 facing the inside 2 to elastically deform the folded elastic contact leg 43 so as to retreat from the FPC insertion groove 21. The pressing wall 51 has a horizontal extension 3 of the surface contact group 30.
3 are pierced to allow the actuator 50 to move relative to the actuator insertion groove 22.
When it is moved inside, the surface contacts 30 are not deformed (no force is applied from the actuator 50).

FIGS. 2 and 3 show the assembled state of the present connector having the above-described structure. In the state shown in FIG.
The pressed end portion 44 of the zero group is pushed up by the elasticity, and the folded elastic contact leg 43 faces the inside of the FPC insertion groove 21. The horizontal extension 33 of the group of surface contacts 30 is located in the free groove 54, and the folded elastic contact leg 34 is not affected by the position of the actuator 50,
It faces inside the insertion groove 21.

When the double-sided FPC 10 is inserted into the FPC insertion groove 21 of the insulator 20, the actuator 50 is pushed in through the operating portion 53 in the state shown in FIG. The contact leg 43 is elastically deformed and retracted from the FPC insertion groove 21 (FIG. 3). Thereafter, the double-sided FPC 10 is
When inserted into the C insertion groove 21, the elastic contact legs 34 of the surface contacts 30 are elastically deformed by the double-sided FPC 10, and the elastic contact legs 34 are conducted to the surface lands 11 thereof. At this time, the insertion force necessary for the double-sided FPC 10 is only the force required to elastically deform the elastic contact legs 34,
A substantial ZIF (Zero Insertion Force) can be realized. After the double-sided FPC 10 is inserted, the actuator 50
When the operating force is released from the, the rear contact group 40 is restored by its own elasticity, and the elastic contact leg 43 group is moved to the double-sided FPC.
Conduction is made to a group of ten backside lands 12.

When the double-sided FPC 10 is removed from the insulator 20, the actuator 50 is similarly pushed in,
The elastic contact leg 43 may be separated from the double-sided FPC 10 or the contact force with the double-sided FPC 10 may be reduced.

[0017]

As described above, according to the present invention, FPC /
When the FFC is a double-sided type, it is possible to obtain a double-sided FPC / FFC connector which can easily and reliably connect the front and back lands of the FPC / FFC to the contacts on the substrate side, thereby increasing the number of poles and increasing the mounting density of the substrate. Can be achieved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a double-sided FPC / FFC connector according to the present invention.

FIG. 2 is a sectional view of the actuator in a free state in an assembled state of the double-sided FPC / FFC connector.

FIG. 3 is a sectional view when a pressing force is applied to an actuator in FIG. 2;

FIG. 4 is a partial sectional view showing a relationship between an actuator and a contact.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 Double-sided FPC / FFC 11 Front land 12 Back land 20 Insulator 21 FPC insertion groove 22 Actuator insertion groove 23 Front contact storage groove 24 Back contact storage groove 30 Front surface contact 34 Folded elastic contact leg 40 Back contact 43 Folded elastic contact leg 44 Pressed end 50 Actuator 51 Pressing wall 54 Free groove

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 12/28 H01R 24/10

Claims (2)

(57) [Claims] 1. An F having a land group arranged on both sides.
PC / FFC; an insulator having an insertion groove of the FPC / FFC; a front contact group and a rear contact group which are respectively positioned above and below the FPC / FFC insertion groove of the insulator and soldered on a substrate; one of use contact group and the back contact group, an actuator to elastically deform in a non-contact position with the land group of the inserted FPC / FFC the FPC / FFC insertion groove of the insulator; equipped with this actuator, for surface Contact group and back side
Press any one of the contact groups to make FPC / FFC
A pressing wall that elastically deforms to a position where it does not contact the land group,
The other of the front contact group and the back contact group
Movably fitted with a free groove group formed in the pressing wall.
Connector for double-sided FPC / FFC, characterized in that it has been. 2. The double-sided FPC / FFC connector according to claim 1, wherein the front contact group and the rear contact group are arranged such that upper and lower corresponding contacts are located on the same plane.