JPS6028069Y2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for electrically connecting a flexible printed circuit board or jumper lead wire, etc., provided with a foil-like conductor.

Conventionally, in this type of connector, as shown in FIG. There is a contact 30, and a flexible printed circuit board 4.
Connected to 0.

The insulator 10 has a rectangular parallelepiped shape and is attached to a substrate (not shown), with a plurality of contact insertion holes provided in a direction perpendicular to the substrate, and a hole of a predetermined depth adjacent to each contact insertion hole.

The rotation operation lever 20 has a rod-shaped main body 204, and a pivot portion 201 and an operating section 202 are integrally formed at both ends of the main body 204.
An insertion piece 205 is integrally provided in the.

The contacts 30 are located in the contact insertion holes of the insulator 10 and are electrically connected to external circuits, respectively, and have spring contact portions facing the six contacts.

The flexible printed circuit board 40 is inserted between the spring contact portion of the contact 30 and the hole of the insulator, and the contact pressure generated between the insertion piece 205 of the rotation operation lever 20 and the spring contact portion electrically connects the contact. connected to.

In a connector with such a configuration, the pivot portion 201 of the rotation operating lever 20 is pivotally supported on the insulator 10, and the end of the conductor foil exposed from the insulation coating of the flexible printed circuit board 40 is connected to the spring contact portion of the contact 30 and the hole. The flexible printed circuit board 40 is pressed against the contact 30 and held in contact with the contact 30 by rotating the rotation operating lever 20 and engaging the hook 203 with the engagement recess of the insulator, and fitting the insertion piece 205 into the hole of the insulator. It is something that

This type of connector is the insertion piece 205 of the rotation operation lever 20.
Since the contacts are only pressed by the flexible printed board, there is a drawback that the contacts may shift or come off if external tensile force or vibration is applied to the flexible printed board.

In view of the above, it is an object of the present invention to provide a reliable connector in which the contact point between the conductor of the printed board and the spring contact part of the contact does not easily shift or come off even when an external force is applied to the flexible printed board. With the goal.

The present invention will be described below using examples with reference to the drawings.

FIG. 2 and subsequent figures show an embodiment of the present invention.

The connector of the present invention has an insulator 19, a rotating operation lever (hereinafter referred to as lever), 2. It consists of contact 3.

The insulator 1 has a substantially rectangular parallelepiped shape and is integrally molded from a plastic material such as nylon 66, and has a lever 2 integrally connected to it by a connecting portion 11 as shown in FIG.

The front end is a mounting table 12 for a flexible printed circuit board (hereinafter referred to as a printed circuit board) 4 equipped with a foil-like conductor, for example, and the printed circuit board is mounted on a contact head 31 with a cam section 21 attached to an insulator by rotating the lever 2 upward. It is inserted from the insertion port 22 in the state that it rests on top (FIG. 5(a)), and its end abuts against the stopper 14.

The receiving groove 13 is provided in the side wall 15 of the insulator 1 and is used to engage the cam portion 21.

A plurality of mutually parallel contact receiving holes 16 are connected to the stopper 1.
There is an open end at position 4, and a small hole 17 at the rear for locking and fixing the contact 3.

The lever 2 has a U-shaped channel shape in cross section, and is integrated with the insulator 1 by the connecting portion ii as described above.

By rotating the lever 2 and operating the knob 23 to engage the cam portion 21 with the receiving groove 13 of the insulator, electrical contact and fixation between the contact 3 and the printed circuit board 4 are performed, and the fitting between the two is removed. This releases electrical contact and fixation.

The cam portion 21 has a substantially upright side surface 21a for complete engagement with the receiving groove 13, and a curved surface 21b that abuts against the rear portion 31a of the contact head.

FIG. 3 shows the appearance of the cam portion 21 in a state in which it is engaged with the receiving groove 13.

The upper side of the opening of the insertion opening 22 is inclined inward to facilitate insertion of the printed circuit board.

The contact 3 is a hook-shaped body having a head 31 at one end, as shown in FIG. 4, and is continuously pressed from an elastic metal material such as a phosphor bronze plate.

The head 31 has an arcuate shape, and the free end is cut at an acute angle to form a blade portion 32.

The support portion 33 extends almost horizontally so that when the contact is mounted on the insulator, the head portion 31 is inserted into the contact receiving hole 16.
The cam part 21 has a length long enough to protrude from the cam part 21 and engage with the rear part 31a of the head.

A contact portion 34 is provided between the support portion 33 and the head 31 so as to form a circular arc in a direction opposite to the circular arc of the head.

The contact 3 is locked into the small hole 17 provided at the rear of the housing hole 16 by the projection 35 and fixed to the insulator.

Following the locking protrusion, the contact 3 is bent downward at a substantially right angle to form a leg 36, which extends outside the insulator and connects to another substrate (not shown).

The sequence of electrically contacting the printed circuit board with the connector of the present invention is shown in FIG.

FIG. 5a shows a state in which the cam portion 21 of the lever rests on the head 31 of the contact, with the printed circuit board not yet inserted.

Next, as shown in FIG. 5, the printed circuit board 4 is inserted through the insertion opening 22 and placed on the mounting table 12, so that the tip of the foil-like 4 body 41 comes into contact with the stopper 14 of the insulator.

By pressing the knob 23 of the cam part, the head part 31 of the contact is pushed against the rear part 31a, and the contact part 34 of the contact is pressed.
The tip of the wire begins to come into contact with the foil-like conductor of the printed board.

Further, when the knob is continued to be pressed, the contact force between the two is increased, and at the same time, the sharp blade part 32 of the lever is bent and bites into the printed board 4 to perform a fixing action.

As shown in FIG.
3a and the rear part 31a of the head 31 of the contact, and the lever is completely locked.

In other words, the rotary operation lever of the connector of the present invention is locked by the spring properties of the contacts, and when the lever is locked, there is electrical contact between the contact portion of the contact and the foil-like conductor of the printed circuit board, and the blade portion of the contact and the printed circuit board. At the same time, mechanical fixing is performed.

In the above-mentioned embodiment, the insulator and lever were described as being integrated, but they may be separate bodies, and in this case, the product is a state in which the lever is assembled into the insulator.

Also, a Japer lead wire can be used instead of a printed circuit board.

As mentioned above, according to the connector of the present invention, since the spring properties of each contact are used to lock the lever, a locking force proportional to the number of contact cores can be obtained, and complete electrical contact with the printed circuit board can be made. Since the inserted printed circuit board is fixed by the bite of the blade provided at the free end of the contact, external forces such as tensile force and vibration act on the printed circuit board, compared to conventional connectors that simply press the printed circuit board. It is difficult to remove and is extremely reliable.

Furthermore, the use of an integrally molded product of the insulator and the rotary operation lever has the advantage of being low cost.

Although the present invention has been described above using a specific embodiment, it is obvious that the present invention is not limited thereto and includes various design modifications within the scope of the present invention.

[Brief explanation of the drawing]

Figures 1a and 1b are perspective views and operation explanatory views showing a conventional connector, Figures 2 and below show an embodiment of the connector of the present invention, and Figure 2 is a sectional view showing an insulator in a state after molding.
Figure 3 shows the state in which the lever is locked, a is a plan view,
b is a front view, C is a side view, FIG. 4 is a perspective view showing the contacts, and FIG.
) is the state in which the printed circuit board has not been inserted, (b) is the state in which the contacts have started making electrical contact with the inserted printed circuit board,
(C) is a sectional view showing a state in which the lever has been completely locked and the electrical contact and fixation between the printed circuit board and the contact have been completed. 1... Insulator, 12... Mounting table, 13... Receiving groove, 13a... Wall,
15...Side wall, 2...Rotary operation lever, 21...Cam section, 3...Contact, 31...Head, 32 ...Blade part, 33
...Supporting part, 34...Contact part, 4...
...Touched board.

Claims (1)

[Scope of utility model registration request] An insulator having a substantially rectangular parallelepiped shape having a mounting base for the substrate to be contacted at its front end, a rotation operation lever also having a cam portion that engages with a receiving groove provided in a side wall of the insulator, and a rotating operation lever fixed to the insulator and having a head mounted on the mounting base. and a plurality of contacts each having a protruding contact portion, the head of the contact is arcuate, and the free end following the head has a blade portion, and the support portion extends horizontally between the head and the head. The contact portion has an arc in the opposite direction to the arc of the head, and presses the rotation operating lever to sandwich the cam portion between the wall of the receiving groove and the head of the contact, thereby locking the lever. A connector characterized by: