KR100451779B1 - connector for FPC/FFC - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to obtain a connector for FPC / FFC having good insertion / removability in which an FPC / FFC can be inserted and detached with a small stroke of a slider of a straight type in an FPC / FFC connector having a zigzag contact group. will be.

To this end, the present invention sets the amount of protrusion of the elastic contact angle of the front contact group into the insertion groove smaller than the amount of protrusion of the inner contact group into the insertion groove among the contact groups of the zigzag arrangement, and the pressing wall of the slider is the inner contact group. The connector for FPC / FFC which set the thickness of the front end part corresponding to the elastic contact angle of the thinner than the thickness of the thick part side corresponding to the elastic contact angle of a front contact group is provided.

Description

Connector for FPC / FCC {connector for FPC / FFC}

The present invention relates to a contact for connecting a flexible printed circuit board (FPC) or a flexible flat cable (FFC) to a contact group supported by an insulator.

As a type of FPC or FFC connector (hereinafter, FPC / FFC connector), an insulator having a contact group and a slider for applying contact pressure to the contact group and the FPC / FFC connector are known. The slider is inserted together with the FPC / FFC into the FPC / FFC insertion groove of the insulator and elastically deforms the elastic contact angle of the contact group to conduct the land group of the FPC / FFC and the FPC / FFC group.

In the said FPC / FFC connector, multipolarization which increases the number of contact groups is progressing. Multipolarization is achieved by narrowing the pitch of the contact group and staggering the positions of the elastic contact angles of the contact groups alternately before and after the insertion direction of the insertion grooves (zigzag arrangement of the contact group elastic contact angles).

However, in the conventional FPC / FFC connector for zigzag arrangement of contacts, when the FPC / FFC is inserted and removed, the entire slider is pulled out of the insulator, the FPC / FFC is stacked on the slider, and both of them are inserted into the groove again. Should be inserted into

Even if the slider was not completely removed from the insulator, the slider stroke required for the insertion and removal of the FPC / FFC was long, which hindered the insertion workability and miniaturization.

Accordingly, an object of the present invention is to provide an FPC / FFC connector having good insertion and detachment workability in which an FPC / FFC connector can be inserted and detached with a small stroke in a FPC / FFC connector having a zigzag contact group. do.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a state before insertion of a slider showing one embodiment of a connector for FPC / FFC according to the present invention.

Fig. 2 is a plan view showing a state after insertion of the slider showing one embodiment of the connector for FPC / FFC according to the present invention.

3 is a cross-sectional view taken along line III-III of FIG. 2.

4 is a cross-sectional view taken along line IV-IV of FIG. 2.

5 is an enlarged cross-sectional view showing the cross-sectional shape of the insertion portion of the slider.

6 is a cross-sectional view showing a state when the slider is inserted and detached.

*** Explanation of symbols for main parts of drawing ***

B: Substrate BL: Land

10: insulator 11, 12: contact receiving groove

13: FPC / FFC insert groove 20: Front contact

21, 31: solder angle 22: front elastic contact angle

30: inner contact 32: inner elastic contact angle (脚)

40: FPC / FFC 41: Rand

50: slider 51: pressure wall

51A: Thin section (thin section) 51B: Incline section

51C: thick part (thick part) 51D: second inclined part

51a: thin part flat part 51b: inclined surface

51c: thick part flat part 51d: inclined surface

In the conventional FPC / FFC connector of this type, the present invention is set equal to the amount of protrusion of each of the elastic contact angles into the insertion grooves of the front contact group and the inner contact group. This resulted in the conclusion that the workability of insertion and removal was bad because of the uniformity (parallel flat plate).

That is, the present invention provides an insulator having an insertion groove of an FPC / FFC, a contact group soldered onto a substrate with an elastic contact angle protruding in the FPC / FFC insertion groove, and an FPC / FFC having a land group conductive to the contact group. And a pressurizing wall inserted into the FPC / FFC insertion groove of the insulator together with the FPC / FFC, and having a slider for applying contact pressure to the land group and the contact group of the FPC / FFC, wherein the contact group has an elastic contact angle. A connector for FPC / FFC, comprising a front contact group aligned with an inlet side in the insertion direction of the insertion groove, and an inner contact group aligned inside, wherein the amount of protrusion of the front contact group into the insertion groove of the elastic contact angle is determined by the inner contact. The pressure wall of the slider sets the thickness of the tip end side corresponding to the elastic contact angle of the inner contact group, and the thickness of the thick part side corresponding to the elastic contact angle of the front contact group. Characterized in that a thinner set to.

The pressure wall shape of the slider is, for example, between the thin portion on the tip end side corresponding to the elastic contact angle of the inner contact group, the thick portion on the back side side corresponding to the elastic contact angle of the front contact group, and the thin portion and the thick portion. It can be set as the end shape which has the inclined part which connects the (circle). In this aspect, it is preferable to set the distance between the thin portion of the slider and the elastic contact angle of the inner contact group almost equal to the distance between the thick portion and the elastic contact angle of the inner contact group.

Alternatively, the pressing wall of the slider may have a thin end face wedge shape at the tip end side. Also in this case, the distance between the pressure wall and the elastic contact angle of the inner contact group and the elastic contact angle of the inner contact group are set to be approximately equal, respectively.

It is preferable to form a means for fixing both in between the insulator and the slider in a state where a gap in the insertion direction is formed between the front end of the pressing wall and the front elastic contact angle.

1 shows an embodiment of a connector for FPC / FFC according to the present invention.

The connector has an insulator (housing) 10 made of synthetic resin fixed on the substrate B. The insulator 10 includes a group of contact accommodating grooves 11 for accommodating a group of front contacts 20 and an inner side thereof. The contact accommodating grooves 12 for accommodating the group of contacts 30 are formed to be aligned every other at a predetermined interval. The insulator 10 is further provided with an FPC / FFC insertion groove 13 having an open front orthogonal to the contact storage grooves 11 and 12, and an FPC in the FPC / FFC insertion groove 13. / FFC 40 and the slider 50 made of synthetic resin are inserted and removed. In this specification, the open side of the FPC / FFC insertion groove 13 is front and the occlusion side is rear.

On the insulator 10, the slide guide protrusion 14, the release prevention protrusion 15, and the locking protrusion 16 of the slider 50 are sequentially formed on both outer surfaces of the FPC / FFC insertion groove 13 in the width direction. .

The front contact 20 is a solder angle 21 soldered to the land BL group on the substrate B in front of the insulator 10, and an upper side of the FPC / FFC insertion groove 13 (the opposite side of the substrate B). In the FPC / FFC insertion groove 13 is provided with an elastic contact angle (22). The inner side contact 30 has a solder angle 31 soldered to the land BL group on the substrate B inside the insulator 10 and an FPC / FFC insertion above the FPC / FFC insertion groove 13. It has an elastic contact angle 32 projecting into the groove 13.

Since the elastic contact angle 22 is closer to the opening end of the FPC / FFC insertion groove 13 than the elastic contact angle 32, the elastic contact angle 22 is in front of the elastic contact angle 22 and the elastic contact angle 32 is inward. (Rear) It is set as an elastic contact angle. The front elastic contact angle 22 and the inner elastic contact angle 32 are arranged in a zigzag shape in plan view.

The front elastic contact angle 22 of the contact 20 and the inner elastic contact angle 32 of the contact 30 are not only different in position in the insertion direction of the FPC / FFC insertion groove 13, but also the FPC / FFC insertion groove. The amount of protrusion into (13) is also different. That is, as shown in an enlarged view in FIG. 5, the distance R1 between the front elastic contact angle 22 and the reference plane is set with the lower surface of the FPC / FFC insertion groove 13 substantially parallel to the plane of the substrate BD as a reference plane. Is set larger than the distance R2 between the inner elastic contact angle 32 and the reference plane.

The slider 50 has a pressurizing wall 51 in the center portion which is inserted into and detached from the FPC / FFC insertion groove 13 of the insulator 10, and both guide arms 52 of the pressurizing wall 51.

The guide arm 52 is provided with a guide groove 53 which is engaged with the slide guide protrusion 14 of the insulator 10, and the stop protrusion 15 and the locking protrusion 16 are formed at the distal end of the guide arm 52. Claw portion 54 to be engaged is formed.

The pressurizing wall 51 of the slider 50 consists of the thin part 51A, the inclination part 51B, the thick part 51C, and the 2nd inclination part 51D from the front-end part side in order. That is, the lower surface of the pressing wall 51 is formed of a substantially flat surface corresponding to (joining) the lower surface of the FPC / FFC insertion groove 13 (as shown in FIG. 3, the lower surface of the pressing wall 51 is the front contact. In the corresponding part of 20, the insertion direction rear part became thick, because the pressurization wall 51 was formed thick in the part where a contact does not exist, and the lower surface of the pressurization wall 51 as a whole (macro Is flat).

On the upper surface, the thin part flat part 51a, the inclined surface 51b, the thick part flat part 51c, and the inclined surface 51d are formed in order from the tip end side. The pressurizing wall 51 is provided when the slider 50 is normally attached to the insulator 10 (the claws 54 of the guide arm 52 are attached to the locking projections 16 of the insulator 10). When engaged (solid line in FIG. 2), the thin portion 51A faces the inner elastic contact angle 32 of the contact 30, and the thick portion 51C is positioned at the front elastic contact angle 22 of the contact 20. To face. The distance d between the thin part flat part 51a and the inner elastic contact angle 32 and the distance d between the thick part flat part 51c and the front elastic contact angle 22 are approximately equal, and FPC / FFC ( Less than the thickness of 40).

When the slider 50 is mounted on the insulator 10, the pressure wall 51 is inserted into the FPC / FFC insertion groove 13, the left and right guide arms 52 are opened, and the toenail 54 is prevented from being separated. Engage in the inside of the projection 15 (two dashed line in Fig. 2). In this state, the slider 50 does not fall easily.

And in the state of the chain line of FIG. 2 in which the claw part 54 is engaged with the anti-separation protrusion 15, as shown in the 2nd and 3rd view from the top of FIG. 6, the front end of the pressurizing wall 51 is Slightly ahead of the front elastic contact angle 22 of the contact 20 (there is a gap in the insertion direction between the front end of the pressure wall 51 and the front elastic contact angle 22), An insertion space of the FPC / FFC 40 is formed between the tip and the front elastic contact angle 22.

The FPC / FFC connector of the present invention having the above-described configuration performs insertion and detachment of the FPC / FFC 40 and the slider 50 as follows. The uppermost figure of FIG. 6 shows a state in which only the slider 50 is normally attached to the insulator 10 without inserting the FPC / FFC 40. In this state, the thin elastic portion 51A of the pressing wall 51 and the inner elastic contact angle 32 of the inner contact 30, and the front elastic contact angle 22 of the thick portion 51C and the front contact 20 are approximately. They face the same distance d.

In this state, when the slide 50 is pulled out and the claw portion 54 is positioned at the temporary withdrawal end that is engaged with the release preventing protrusion 15 of the insulator 10, the tip of the pressure wall 51 is placed. Located slightly ahead of the front elastic contact angle 22 of the front contact 20, an insertion space of the FPC / FFC 40 is formed between the front elastic contact angle 22 and the tip of the pressing wall 51. In this state, when the FPC / FFC 40 is slid onto the thin portion flat portion 51a and inserted into the FPC / FFC insertion groove 13, the tip of the pressing wall 51 is the thin portion 51A. Since a gap is formed between the tip of the thin portion 51A and the front elastic contact angle 22, the FPC / FFC 40 can be inserted to the inside of the FPC / FFC insertion groove 13 (Fig. 6). Third degree from above). The fact that the amount of projection of the front elastic contact angle 22 into the FPC / FFC insertion groove 13 is set smaller than the amount of projection of 33 is also facilitated insertion of the FPC / FFC 40.

After inserting the FPC / FFC 40 into the FPC / FFC insertion groove 13 in this manner, the pressure wall 51 is pushed into the FPC / FFC insertion groove 13, whereby the thin portion 51A becomes the FPC / FFC. 40 is pressed against the front elastic contact angle 32, and the thick part 51C presses the FPC / FFC 40 to the front elastic contact angle 22. As shown in FIG. As a result, the land 41 group of the FPC / FFC 40 conducts at the inner elastic contact angle 32 and the front elastic contact angle 22, and the land 41 group of the FPC / FFC 40 and the land of the substrate B are connected. The electrical connection of the group BL is completed.

When the pressurizing wall 51 of the slider 50 is set to an end as in the above embodiment, the output force by the elastic contact angles 22 and 32 does not act on the slider 50, and maintains stable contact. Can be. However, when the upper surface is tapered surface 51T and the entire pressurization wall 51 is made into a cross-sectional wedge shape, as shown by the dashed-dotted line in the second figure from the top of FIG. 6, the insertion of the FPC / FFC 40 is performed. Becomes easier.

Also in the case where the pressing wall is wedge-shaped, it is preferable to set the distance between the pressing wall and the elastic contact angle of the inner contact group and the distance between the pressing wall and the elastic contact angle of the inner contact group approximately equally.

According to the present invention as described above, in the FPC / FFC connector having a zigzag contact group, an FPC / FFC connector having good insertion and detachment workability capable of inserting and detaching FPC / FFC with a small stroke of a slider is obtained. Can be.

Claims (5)

Insulator with insertion groove of FPC / FFC, A group of contacts soldered onto a substrate with an elastic contact angle protruding into the FPC / FFC insertion groove, An FPC / FFC having a land group conducted to the contact group; In the FPC / FFC connector having a pressurized wall inserted into the FPC / FFC insertion groove of the insulator together with the FPC / FFC, and having a slider for applying contact pressure to the land group and the contact group of the FPC / FFC. The contact group is composed of a front contact group whose elastic contact angle is aligned at the inlet side of the insertion direction of the insertion groove, and an inner contact group aligned inward, The amount of protrusion of the elastic contact angle of the front contact group into the insertion groove is set smaller than the amount of protrusion of the inner contact group into the insertion groove, The pressure wall of the slider is set so that the thickness of the tip end side corresponding to the elastic contact angle of the inner contact group is set to be thinner than the thickness of the rear side corresponding to the elastic contact angle of the front contact group. The method of claim 1, The pressing wall of the slider is a thin portion on the tip end side corresponding to the elastic contact angle of the inner contact group, A thicker portion on the rear side corresponding to an elastic contact angle of the front contact group, and an inclined portion for connecting between the thinner portion and the thicker portion. The method of claim 2, A distance between the thin portion of the pressure wall of the slider and the elastic contact angle of the inner contact group is equal to the distance between the thick portion of the slider and the elastic contact angle of the inner contact group, respectively. The method of claim 1, The pressurizing wall of the slider is a connector for FPC / FFC, characterized in that the tip end side has a thin cross-sectional wedge shape. The method according to any one of claims 1 to 4, A connector for an FPC / FFC, provided between the insulator and the slider, in which a gap in the insertion direction is formed between the front end portion of the pressing wall and the front elastic contact angle.