JP2593884Y2 - FPC connection structure - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an FP for connecting a terminal portion of a flexible printed circuit to a partner terminal without displacement.
It relates to the C connection structure.

[0002]

2. Description of the Related Art FIG. 5 is a longitudinal sectional view showing a conventional FPC connection structure. In the figure, 30 is a meter case of the vehicle, 3
Reference numeral 1 denotes an FPC circuit connected to the case 30 by a connector.

A flexible printed circuit (hereinafter referred to as FPC) 32 is routed on the back surface of the case 30, and a terminal portion 34 of the FPC 32 is bent and accommodated in a cavity 33 of the case 30, and a female connector portion 39 is provided. Is composed. The male connector portion 35 of the FPC circuit body 31 is inserted and connected into the cavity 33. The connector section 35
Is a movable protrusion 36 which is loosely fitted in the connector fitting orthogonal direction (up, down, left and right), and an FPC 3 arranged along the protrusion 36.
7 terminal portions 38. The movable protrusion 36
Absorbs positional deviation from the mating female connector portion 39 and enables smooth connection.

However, in the above-described conventional structure, as shown in FIGS. 6 and 7 (corresponding to the AA cross section in FIG. 5), the movable protrusion 36 is moved in the horizontal direction (the direction of arrow A) to absorb the displacement. In this case, the terminal 38 of the FPC 37 along the protrusion 36 does not move and stays at the original position. Therefore, the positions of the terminals 38 and 34 of the male and female connectors 35 and 39 do not match, and There was a problem of causing poor contact.

[0005]

SUMMARY OF THE INVENTION In view of the above points, the present invention can provide a good electrical connection without causing a positional shift even when the movable protrusion moves to absorb the positional shift. An object is to provide an FPC connection structure.

[0006]

In order to achieve the above object, according to the present invention, a terminal portion of a flexible printed circuit is projected along a movable projection of a connector, and the terminal portion is connected to a connection portion in a cavity of a mating connector. In the FPC connection structure, the positioning projection is provided at the tip of the movable projection, and the terminal portion of the flexible printed circuit is provided with an engagement hole for the positioning projection.

[0007]

The positioning projection at the tip of the movable projection is inserted into the engagement hole of the terminal of the FPC so that the tip of the terminal can be moved integrally with the movable projection. That is, when the movable protrusion moves in the lateral direction, the terminal bends the protrusion base so that the tip follows the protrusion. Then, the exposed conductor at the distal end is brought into contact with the mating connection portion without displacement.

[0008]

FIG. 1 is an exploded perspective view showing an embodiment of an FPC connection structure according to the present invention, FIG. 2 is a perspective view showing an assembled state, and FIG. FIG.

This structure has a flexible printed circuit (FPC) 1, a synthetic resin substrate 2 for holding the FPC 1, and a frame portion 3 integrally provided at the center of the substrate 2, which is held in a front-rear and left-right play fit. A movable projecting portion 5 for projecting and holding the terminal portion 4 of the FPC 1 to the outside, a resin case 6 for accommodating each of the components 1 to 5, and a resin upper cover opposed to the FPC 1 7.

The FPC 1 is formed by dividing circuit sheets 8 on both sides and connecting both circuit sheets 8 by terminal portions 4 bent in an inverted U-shape. The printed conductor 9 is routed, and the leading end half of the conductor 9 is exposed, and the terminal portion (connection portion) 11 of the mating connector portion 10 is exposed.
It is a contact portion 9a for (FIG. 3). Further, a pair of engaging holes 12 for fixing the movable protruding portion 5 to the movable protruding portion 5 are provided in parallel at the tip bent portion 4a (FIG. 1) of the terminal portion 4.

The movable protruding portion 5 is made of a synthetic resin as a material, and is provided above the butting flange 13 against the frame portion 3.
A house-shaped protruding block 14 is provided integrally with the terminal portion 4, and a notch groove 15
A pressing spring piece 16 for pressing the conductor 9a of the terminal portion 4 is provided at the end of the block 14.
A pair of pin-shaped positioning protrusions 1 for the engagement holes 12
7 and 17, and a loose fitting portion 18 for the frame body portion 3 is protruded below the flange 13.

The loose fitting portion 18 is formed by projecting a locking claw 20 from a loose fitting wall 19 having a width smaller than the inner width of the frame body portion 3. The locking claw 20 is engaged with the piece 21 and is held loosely in the frame 3. The movable connector 5 and the terminal 4 of the FPC 1 constitute a male connector 22. The upper cover 7 engages the locking claws 23 provided at the front and rear ends with the engagement holes 24 of the case 6 to support the terminal end base 4b of the FPC 1 on the flange 13 of the movable protrusion 5 ( (Figures 2 and 3).

The male connector 22 is inserted into the cavity 25 of the mating female connector section 10 as shown in FIG. 3, and connects the terminal section 4 of the FPC 1 to the terminal section 11 of the mating FPC 26 which is folded and accommodated. Here, both connector parts 10, 22
4, the tip 4a of the terminal portion 4 integrally follows the centering movement of the movable protrusion 5 in the lateral direction (the direction of arrow A) as shown in FIG. The exposed conductor 9a is brought into contact with the exposed conductor of the opposite terminal section 11 without displacement.
Since the base portion 4b is not fixed and is flexible, the terminal portion 4 can move the distal end portion 4a. Note that the positioning projection 17 and the engagement hole 12 do not necessarily need to be paired, and if the block 5 has a short width, only one block may be provided at the center.

[0014]

As described above, according to the present invention, when the movable protrusion moves to absorb the positional deviation between the connectors, the terminals of the FPC also move together. , And good electrical connection is always ensured.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an FPC connection structure according to the present invention.

FIG. 2 is a perspective view showing an assembled state.

FIG. 3 is a longitudinal sectional view showing a state of connection with a mating connector.

FIG. 4 is a perspective view showing a state when the movable protrusion absorbs a displacement.

FIG. 5 is a longitudinal sectional view showing a conventional example.

FIG. 6 is a perspective view showing a state when the movable protrusion is displaced.

7 is a sectional view corresponding to AA in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 FPC 4,11 Terminal part 5 Movable protrusion 10 Female connector part 12 Engagement hole 17 Positioning protrusion 22 Male connector 25 Cavity

Claims (1)

(57) [Scope of request for utility model registration] In an FPC connection structure in which a terminal portion of a flexible printed circuit protrudes along a movable protruding portion of a connector, and the terminal portion comes into surface contact with a connection portion in a cavity of a mating connector, an FPC connection structure is provided. An FPC connection structure comprising: a positioning projection; and a terminal portion of the flexible printed circuit having an engagement hole for the positioning projection.