JPH08306408A - Connector for fpc - Google Patents

Abstract

PURPOSE: To secure electric connection by inserting a connector into an opening part from the side of an FPC added to an installing member, and opening locking elastic parts of leg parts of the connector in an inner wall part of the opening part. CONSTITUTION: Two sets of mutually opposing leg parts 8a to 8d rising in the vertical direction to a base part 7 from the two edges opposed to the plate- like base part 7 having a substantially quadrangular shape, are provided. Internal connecting guides 9 having a width wider than an outside diameter of a male terminal 4 formed by being folded back toward the base part 7, are respectively arranged inward by continuing from the leg parts 8a to 8d above these leg parts 8a to 8d. Pressing parts 10 which are integrally and extendedly arranged from the guides 9 and have a width narrower than a space between legs of the leg parts 8a, 8b and 8c, 8d formed by being bent outward, are arranged on these guides 9. Electric contacts 11 which are erected in the vertical direction to the base part 7 and are pushed outward by the pressing parts 10 of the guides 9 when the male terminal 4 is inserted, are arranged between the leg parts 8a, 8b and 8c, 8d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FPC connector for electrically connecting an FPC attached to a mounting member and an electric device mounted on the mounting member by inserting a male terminal of the electric device. is there.

[0002]

2. Description of the Related Art Conventionally, when electrically connecting a flexible printed circuit board (hereinafter referred to as an FPC) attached to a mounting member and a terminal led from an electric device, the terminal is mounted on the FPC with a screw or a nut. It was common to tighten and sandwich to make a fixed connection, but there was a case where the conduction troubles occurred due to the increase in the work man-hours due to the tightening of screws and nuts and the loosening of screws and nuts caused by vibration. .

As a means for solving this, for example, Jitsuko Sho 5
Japanese Patent Application Laid-Open No. 8-41750 discloses that a male terminal is provided on the electric device side, and a mounting plate provided with a through hole and a connector fitted to an FPC are provided to connect to the male terminal. This connector is formed by stamping from a sheet metal, and has a pair of side walls standing upright from two opposing sides of a rectangular board portion, a pair of elastic contact pieces folded inward from both side walls, and the above board. A pair of elastic tongues extending obliquely in the direction of extension of the side walls from the other two opposite sides of the portion, and a through hole to be engaged with the locking projection provided in the through hole on both side walls. A stopper piece is provided to regulate the degree of insertion into the through hole. In this way, the electric device can be attached to the FPC with one touch, and the attachment is securely and stably performed by the elastic force.

[0004]

However, in the above-mentioned connector, when the male terminal is connected to the connector, the inserted male terminal is elastically electrically connected by the pair of elastic contact pieces. For this reason, when the male terminal is removed several times when the electrical device is taken out for repair or for long-term use, the elastic contact piece loses elasticity when the electrical terminal is reassembled, and the spring collapses, causing poor electrical continuity. There is a fear. Further, in the connector connection to the FPC, the elastic tongues are elastically electrically connected, and likewise, there is a possibility that the spring will be depressed due to long-term use to cause poor electrical continuity. In other words, in each case, there is a concern that the contact pressure may be weakened because it depends on the elastic force due to the bending of one member. In view of the conventional problems, it is therefore an object of the present invention to provide an FPC connector that increases the contact pressure at each contact point between a male terminal and a connector and between a connector and an FPC to ensure electrical connection. .

[0005]

According to the present invention, an F member is used as a mounting member.
A connector for an FPC in which a PC is attached, a conductive exposed portion of the FPC is inserted into an opening of the mounting member, and a male terminal of an electric device is inserted while being fitted into the opening to make an electrical connection. The FPC connector has a substantially quadrangular flat plate-shaped base portion and two upright sides which are perpendicular to the base portion from two opposing sides of the base portion.
A pair of facing legs, and an internal connection guide that is formed so as to be continuously folded back inward from the legs and toward the base, and that is formed wider than the outer diameter of the male terminal to clamp the male terminal. And a pressing portion extending from the internal connection guide and formed to be bent outward and having a width narrower than a dimension between the two pairs of leg portions, and the pressing portion located between the two pairs of leg portions. And an electrical contact which is formed narrower than the dimension between the two sets of legs and which is erected vertically with respect to the base and is pushed outward by the pushing portion when the male terminal is inserted. Is provided.

[0006]

When the male terminal of the electric device is inserted into the connector, the contact pressure between the connector and the FPC and between the connector and the male terminal increases, and the electrical connection is further ensured.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings of FIGS. The mounting member 1 has an F on its outer surface.
A PC 2 is additionally provided, and a mounting hole (not shown) formed in the FPC 2 is press-fitted and fixed to a pin (not shown) provided in the mounting member 1, so that the FPC 2 is fixed to the mounting member 1. An electric device 3 such as an instrument body is housed inside the mounting member 1, and this electric device 3 is provided with a pin-shaped male terminal 4 for making an electrical connection with the FPC 2. The mounting member 1 is provided with a rectangular opening 5 at a position corresponding to the male terminal 4, and the conductive exposed portions 2a of the FPC 2 are inserted into two opposite sides of the opening 5. This conductive exposed portion 2a
Is a copper foil portion on which an insulating film is not formed. When a connector to be described later is inserted and fitted, the copper foil portion is bent along a guide portion 5a formed in an arc shape at the edge portion of the opening portion 5, and the opening portion 5 is formed.
Is inserted and guided to the inner wall portion 5b that is formed so as to project from the rear side.

Next, the connector 6 fitted in the opening 5 of the mounting member 1 will be described. The connector 6 is formed by punching and bending a sheet metal by press molding, and is generally formed into a flat plate-shaped base portion 7 having a substantially rectangular shape, and the base portion 7 from two opposite sides of the base portion 7.
2 pairs of facing legs that stand vertically against
A, 8b, 8c and 8d are provided.

Above the leg portions 8a, 8b and the leg portions 8c, 8d, the leg portions 8a, 8b and the leg portions 8c, 8d are continuously folded inwardly toward the base portion 7, respectively. An internal connection guide 9 is provided. The internal connection guide 9 clamps the male terminal 4 of the electric device 3 to be inserted,
It is formed wider than the outer diameter of the male terminal 4.

Further, the internal connection guide 9 is provided with a pressing portion 10 integrally extending from the internal connection guide 9 and bent outward. The pressing portion 10 is formed such that its width is narrower than the dimension between the leg portions of the two pairs of leg portions 8a and 8b and the leg portions 8c and 8d described above, so that the leg portions 8a and 8b can be formed.
Also, the pressing portion 10 can be inserted between the leg portions 8c and 8d.

Between the two sets of leg portions 8a, 8b and leg portions 8c, 8d is erected vertically with respect to the base portion 7 and the pressing portion 10 of the internal connection guide 9 when the male terminal 4 is inserted. An electrical contact 11 is provided that is pressed outward by the. The electrical contact 11 is provided with the contact portions slightly protruding outward from the leg portions 8a and 8b and the leg portions 8c and 8d, and by inserting the connector 6 into the mounting member 1, the inner wall of the opening portion 5 is formed. The conductive exposed portion 2a of the FPC 2 bent and inserted into the portion 5b is directly contacted to establish an electrical connection between the FPC 2 and the connector 6, and a convex portion 11a is provided at a contact portion with the conductive exposed portion 2a of the FPC 2. It is provided to make good contact.

The connector 6 is fixed to the mounting member 1 by the leg portion.
Located between the legs 8a, 8b and the legs 8c, 8d and above the legs 8a, 8b
And the locking elastic portion 12 protruding outward and downward from the legs 8c and 8d
And the leg portions 8a, 8b, 8 provided on the same plane as the base portion 7
This can be achieved by sandwiching the mounting member 1 with the ears 13 provided so as to project with respect to the opening 5 on the two opposing sides where c and 8d are not provided.

With the above structure, the connector 6 is attached to the mounting member 1.
When attaching to the FPC of the attachment member 1
2 is inserted into the opening 5 from the side where it is attached, and the leg portions 8a, 8b and leg portions 8c, 8d of the connector 6 are bent inward with the rising portion of the base portion 7 as a base point, and the locking elastic portion 12 is formed. Over the inside of the opening 5 and inserted along the inner wall 5b, and when further inserted, the ear 13 is caught by the edge of the opening 5, and at that time, the locking elastic portion 12 is deep inside the inner wall 5b. The connector 6 is opened outward at the side end to lock the connector 6.

At this time, the ear portion 13 of the connector 6 is
The connector 6 is supported by the receiving portion 5c provided in the opening 5 in correspondence with the above, and the connector 6 is stably held by the mounting member 1 without tilting.

Further, with the insertion of the connector 6, the FP
The conductive exposed portion 2a of C2 is bent along a guide portion 5a formed in an arc shape at the edge of the opening 5, and is inserted and guided into an inner wall portion 5b formed so as to project from the opening 5 to the inner side. At the same time, the restoring elastic force due to the deformation of the FPC 2 and the legs 8a,
The FPC 2 and the connector 6 are electrically connected by the elastic force of the electric contact 11 protruding outward from the 8b and the leg portions 8c and 8d toward the inner wall portion 5b.

When the electric device 3 is assembled to the mounting member 1, the male terminal 4 of the electric device 3 is attached to the connector 6 fitted in the opening 5 of the mounting member 1 from the side where the FPC 2 is not attached. When inserted, the male terminal 4 is guided and inserted into the central portion of the connector 6 along the inclined surface of the internal connection guide 9 provided so as to face each other, and the male terminal 4 and the connector 6 are electrically connected.

In this state, the male terminal 4 of the electric device 3 and the FPC 2 can be already electrically connected by the connector 6, but the present invention aims to make more reliable electrical connection.

When the male terminal 4 is inserted into the internal connection guide 9, the internal connection guide 9 is expanded outward, and the pressing portion 10 formed at the tip of the internal connection guide 9 has an electric contact 11.
And presses the electric contact 11 outward.

Then, the electrical contact 11 increases the contact pressure of the FPC 2 located on the inner wall portion 5b of the opening 5 of the mounting member 1 to the conductive exposed portion 2a, so that the connector 6 and the FPC 2 are connected.
Ensures electrical connection with.

Since the electric contact 11 is formed by a bent portion which is different from the internal connection guide 9, the opening of the electrical contact 11 regardless of the insertion state of the male terminal 4 when the connector 6 is inserted into the mounting member 1. Since the position of the convex portion 11a, which is the abutting portion, is set so as to come into contact with the conductive exposed portion 2a of the FPC 2 at the straight portion (not the arc-shaped guide portion 5a) of the inner wall portion 5 of 5, the contact point is set. It is possible to make stable electrical connection with a constant value.

Further, in the internal connection guide 9 into which the male terminal 4 is inserted, the pressing portion 10 provided at the tip of the internal connection guide 9 comes into contact with the electric contact 11 so that the internal connection guide 9 as a whole is male. The contact pressure on the terminal 4 is increased.

That is, by inserting the male terminal 4 of the electric device 3 into the connector 6, the electrical connection between the connector 6 and the FPC 2 and between the connector 6 and the male terminal 4 is further ensured.

[0023]

According to the present invention, an FPC is attached to a mounting member,
A connector for FPC in which a conductive exposed portion of the FPC is inserted into an opening of the mounting member, and which is fitted into the opening and a male terminal of an electric device is inserted for electrical connection. , A substantially quadrangular flat plate-shaped base portion, two sets of facing leg portions standing upright in a direction perpendicular to the base portion from two opposite sides of the base portion, and the inside of each of the leg portions continuously. Inwardly toward the base portion and wider than the outer diameter of the male terminal to clamp the male terminal, and an internal connection guide extending from the internal connection guide and bent outward. A pressing portion that is formed and has a width narrower than the dimension between the two pairs of legs, and a pressing portion that is located between the two pairs of legs and that is narrower than the dimension between the two pairs of legs. Be done with the above Since the electrical contact is provided upright in the vertical direction with respect to the male part and is pushed outward by the pressing part when the male terminal is inserted, the electric device and the FPC are electrically connected with one-touch through the male terminal. In addition, the contact pressure at each contact point can be increased by inserting the male terminal, and it is possible to provide a highly reliable connector that enables reliable electrical connection.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a connected state in an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a connected state in an embodiment of the present invention.

FIG. 3 is a plan view showing a connector according to an embodiment of the present invention.

FIG. 4 is a front view showing a connector according to an embodiment of the present invention.

FIG. 5 is a side view showing a connector according to an embodiment of the present invention.

FIG. 6 is a perspective view showing a connector according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a mounted state of the connector in the embodiment of the present invention.

[Explanation of symbols]

 1 Mounting member 2 FPC 2a Conductive exposed part 3 Electric device 4 Male terminal 5 Opening 6 Connector 7 Base part 8a, 8b, 8c, 8d Leg part 9 Internal connection guide 10 Pressing part 11 Electrical contact

Claims (1)

[Claims] 1. An FPC is attached to a mounting member, a conductive exposed portion of the FPC is inserted into an opening of the mounting member, and the FPC is fitted into the opening and a male terminal of an electric device is inserted to electrically connect. An FPC connector for measuring the
The PC connector includes a base portion in the shape of a substantially rectangular plate, two pairs of facing leg portions standing upright from the two opposite sides of the base portion in a direction perpendicular to the base portion, and a continuous portion from the leg portion. And internal connection guides that are respectively formed inwardly toward the base portion and are wider than the outer diameter of the male terminal to clamp the male terminal, and extend outward from the internal connection guide. And a pressing portion formed to be narrower than the dimension between the two pairs of legs and positioned between the two pairs of legs and smaller than the dimension between the two pairs of legs. An FPC connector comprising an electric contact which is narrowly formed and is erected in a vertical direction with respect to the base portion and is pushed outward by the pushing portion when the male terminal is inserted.