JP3019279U - Electrical connector for flat flexible cable - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a flat type flexible cable electrical connector that enables quick connection of a flat type flexible cable and can be easily connected regardless of the number of poles of a conductive terminal. There is. [Structure] Insulating housing 1, conductive terminal 2,
A cover 3 is provided. In the conductive terminal 2, the base beam 7 and the U-shaped contact beam 8 are integrated via the connecting portion 9, the engaging arm 10 is provided on the rear end side of the base beam 7, and the contact beam 8 The arm 12 is arranged continuously on the rear side. An engagement portion 17 formed of a plurality of engagement arms 10 arranged in parallel and an engagement portion 16a of the cover 3 are engaged with each other so that the cover 3 can rotate. Further, the lever arm 12 and the inner surface of the rear end of the cover 3 face each other, and the cover 3 can be rotated to open and close the facing portion of the contact beam 8 via the lever arm 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a flat type cable used to connect a flat type flexible cable called flexible flat cable (FFC) or flexible printed circuit board (FPC) to other printed circuit boards and other circuits. Electric connector for flexible cable.

[0002]

[Prior art]

 Conventionally, a flexible printed circuit board connector disclosed in Japanese Patent Laid-Open No. 4-24087 has been known as this type of electrical connector. The electrical connector is fitted in an insulating housing, a plurality of conductive terminals mounted side by side in the insulating housing, and a flat flexible cable for pressing the flexible flexible cable into the contact part of each conductive terminal. And an actuator. When connecting the flat flexible cable, the actuator is designed to be removed to the outside. When the actuator is removed, the connecting end of the flat flexible cable can be inserted into the contact portion in the insulating housing with zero insertion force. After inserting the connection end of the flat flexible cable, position the actuator so that it is parallel to the inner wall of the insulating housing, and slide it between the inner wall of the insulating housing and the flat flexible cable to push it in. A contact pressure is generated between the contact portion and the contact portion, and the connection is completed.

[0003]

[Problems to be solved by the device]

 The conventional electrical connector for flat flexible cable as described above requires a total of 3 actions of insertion of the flat flexible cable, positioning of the actuator, and sliding of the actuator from the insertion of the flat flexible cable to the completion of connection. This hinders quick connection work.

In addition, as the number of poles of the conductive terminals mounted in the insulating housing increases, the force required to slide the actuator into the insulating housing increases and the connection work becomes difficult. was there.

The present invention has been made in view of such problems, and a flat type flexible cable that can be connected quickly and can be easily connected regardless of the number of poles of a conductive terminal. It is intended to provide an electrical connector for a cable.

[0006]

[Means for Solving the Problems]

 In the flat type flexible cable electrical connector of the present invention which achieves the above-mentioned object, a cover is rotatably provided with respect to the insulating housing, and the covers are made to face each other in the insulating housing through the rotation of the cover. The contact beams are opened and closed.

That is, the flat flexible cable electrical connector of the present invention is provided with a flat flexible cable insertion port at the front end, and contact beams of a plurality of conductive terminals mounted in parallel inside are inserted into the insertion port. The conductive terminal includes a base beam and a U-shaped contact beam. The conductive terminal is composed of a facing housing and a cover provided on a rear end side upper part of the insulating housing so as to be rotatable in the front-back direction of the insulating housing. Are integrated through a connecting portion, an engaging arm is provided at the rear end side of the base beam, and this arm is continuously provided at the rear side of the contact beam. An engaging portion formed by each engaging arm of the terminal and an engaging portion of the cover are engaged with each other so as to allow the cover to rotate, and the lever arm and the cover are engaged. -A flat type flexible cable electrical connector characterized in that the inner surface of the rear end side is opposed and the opposing part of the U-shaped contact beam can be opened and closed via the lever arm by rotating the cover. is there.

[0008]

[Action]

 In the flat type flexible cable electrical connector of the present invention, when the cover is rotated, the inner surface of the cover moves the lever arm, and the movement of the lever arm opens and closes the contact beam of the conductive terminal. When the contact beam opens, the connecting end of the flat flexible cable can be inserted with zero insertion force. When the contact beam is closed, a contact pressure is generated between the flat flexible cable and the elasticity of the contact beam. That is, when connecting the flat flexible cable, the work can be completed by two actions of inserting the connection end of the flat flexible cable and rotating the cover. Further, the contact pressure between the flat flexible cable and the contact beam is generated by the elastic force of the contact beam, and since the opening and closing of the contact beam is through the action of the lever arm, a large force is required to rotate the cover. Can be done without the need.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 5, 1 is an insulating housing, 2 is a conductive terminal, and 3 is a cover.

The insulating housing 1 is formed by integrally molding plastic, and has a plurality of terminal mounting grooves 4 arranged side by side in a predetermined pitch in the front-back direction (left-right direction in FIG. 1). The conductive terminal 2 can be attached. A flat flexible cable insertion port 5 is formed at the front end side of the terminal mounting grooves 4 arranged in parallel, and is opened at the front end of the insulating housing 1. Fitting holes 6 communicating with the respective terminal mounting grooves 4 are formed below the insertion port 5 at the same positions as the terminal mounting grooves 4 and at the same pitch.

The conductive terminal 2 is formed by punching out a thin metal plate, and has a base beam 7 and a U-shaped contact beam 8 which are vertically connected in parallel with each other via a connecting portion 9. The base beam 7 is for fitting the front end of the base beam 7 into the fitting hole 6 and fixing the conductive terminal 2 in the insulating housing 1. The base beam 7 is in the shape of a substantially straight strip and has an inverted L shape on the upper side of the rear end. A character-shaped engaging arm 10 is continuously provided so as to project to the rear of the contact beam 8, and a tail 11 that projects to the outside of the insulating housing 1 is continuously provided below the rear end. On the other hand, the contact beam 8 has contact portions 8c protruding inside the tips of the beams 8a and 8b so as to face each other. A lever arm 12 is connected to the rear end side of the upper beam 8a, which is not continuous with the base beam 7 at the connecting portion 9, at a slight angle with the beam 8a (see FIG. 7). .

The conductive terminals 2 are mounted in the terminal mounting grooves 4 of the insulating housing 1. As described above, each conductive terminal 2 is fixed by inserting the front end of the base beam 7 into the fitting opening 6 of the insulating housing 1. The lower end 8d of the tip of the beam 8b below the contact beam 8 hits the bottom oblique wall 4a of the terminal mounting groove 4 and the tail 11 of the base beam 7 so that the fitting into the insulating housing 1 stops at a certain position. The engagement edge 7a formed on the front side abuts on the rear end 1a of the bottom wall of the insulating housing 1. The contact beams 8 of the respective conductive terminals 2 are arranged in parallel so as to face the insertion opening 5. Further, each tail 11 is made to be substantially flush with the bottom surface 13 of the insulating housing 1 so as to project to the outside.

Next, the cover 3 is formed by integrally molding plastic, and includes a top plate 14 and side plates 15 that are hung from both side edges of the top plate 14 and face each other. Engaging rods 16 each having an L-shaped cross section are provided between the corners at the lower rear ends of the side plates 15. The engagement rod 16 has its inner engagement portion 16a engaged with an engagement portion 17 formed by juxtaposing the engagement arms 10 provided on the conductive terminal 2, and both engagement portions 16a, 17 The cover 3 is attached to the insulating housing 1 so as to be rotatable in the front-rear direction by the engagement. An operation protrusion 18 is formed on the outer surface of the lower side of the side plate 15 of the cover 3 on the front end side. An engaging protrusion 19 is formed on the inner surface of the lower portion of the side plate 15 on the front end side so that the engaging protrusion 20 formed on the side wall of the insulating housing 1 can be engaged with and disengaged from the engaging protrusion 20.

When the cover 3 is attached to the insulating housing 1, the inner surface 14 a of the top plate 14 faces each side edge of the lever arm 12. Then, when the cover 3 is rotated, the inner surface 14a of the top plate 14 can press the lever arm 12 or release the pressing.

The manner in which the flat flexible cable 21 is connected to the flat flexible cable electrical connector of the above embodiment will be described with reference to FIGS. 6 to 11. 6 and 7 show a state before the flat flexible cable 21 is connected. In the contact beam 8 of the conductive terminal 2, the contact portions 8c are arranged at intervals smaller than the thickness of the flat flexible cable 21. When connecting the flat flexible cable 21, as shown in FIGS. 8 and 9, the cover 3 is rotated by pulling the front end side of the cover 3 upward, and the engaging portions 16a and 17 are pivoted as fulcrums. Let By this rotation, the top plate 14 of the cover 3 comes into contact with the lever arm 12 of the conductive terminal 2 and pushes it down, so that the contact portion 8c of the contact beam 8 opens and the flat flexible cable 21 as shown in FIG. The connection end 22 can be inserted.

When the preparation for connection is completed as described above, next, as shown in FIG. 10, the connection end 22 of the flat flexible cable 21 is passed through the insertion port 5 of the insulating housing 1 and the conductive terminal 2 is inserted. Insert into the contact beam 8. The spacing between the contact portions 8c of the contact beam 8 is wider than the thickness of the flat flexible cable 21, and the insertion force of the flat flexible cable 21 is zero.

Subsequently, the front end side of the cover 3 is pushed down, and the cover 3 is rotated in the opposite direction until the engaging protrusion 19 of the cover 3 engages with the lower side of the engaging portion 20 of the insulating housing 1. To move. By this rotation, the pressing of the lever arm 12 by the top plate 14 of the cover 3 is released as shown in FIG. 11, so that the open state of the contact beam 8 is restored by its elasticity, and the distance between the contact portions 8c is reduced. The thickness becomes smaller than the thickness of the flat flexible cable 21, and the contact portion 8c and the conductive portion of the flat flexible cable 21 are electrically connected.

As described above, in the flat flexible cable electrical connector of the embodiment, the connection operation of the flat flexible cable 21 is performed by inserting the connection end 22 of the flat flexible cable 21 into the insertion port 5 of the insulating housing 1. It can be performed by two actions, that is, the operation of rotating the cover 3 and the operation of rotating the cover 3 as shown in FIGS. Therefore, the connection operation can be performed quickly and easily. Further, the opening / closing operation of the contact beam 8 of the conductive terminal 2 is performed by the elastic force of the contact beam 8 when closing and by the lever action of the lever arm 12 when opening, so that the cover 3 is finally rotated. The operation can be easily performed regardless of the number of poles of the conductive terminal 2 mounted on the insulating housing 1 and without requiring a large force.

Reference numeral 23 appearing at the lower portion of the side wall of the insulating housing 1 is a fixing leg used when the flat type flexible cable electric connector is attached to a printed wiring board or the like.

[0020]

[Effect of device]

 As described above, according to the present invention, an electric connector for a flat type flexible cable is provided which enables quick connection of a flat type flexible cable and can be easily connected regardless of the number of poles of the conductive terminal. There is an effect that can be provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of the same embodiment.

FIG. 3 is a front view of the same embodiment.

FIG. 4 is a side view of the same embodiment.

FIG. 5 is a side view of the embodiment with the cover opened.

FIG. 6 is a diagram illustrating a usage state of the embodiment, and is a side view of the state before the contact beam is opened.

FIG. 7 is a sectional view showing a state before opening a contact beam in the same manner.

FIG. 8 is a side view showing a state in which the cover is also rotated to open the contact beam.

FIG. 9 is a sectional view showing a state in which the contact beam is opened by rotating the cover in the same manner.

FIG. 10 is a sectional view showing a state in which a flat flexible cable is also inserted.

FIG. 11 is a sectional view showing a state in which the cover is also rotated to close the contact beam.

[Explanation of symbols]

 1 Insulation housing 1a Bottom wall rear end 2 Conductive terminal 3 Cover 4 Terminal mounting groove 4a Bottom diagonal wall 5 Insertion port 6 Fitting port 7 Base beam 7a Engaging edge 8 Contact beam 8a, 8b Beam 8c Contact part 8d Tip lower edge 9 Connection Part 10 Engaging arm 11 Tail 12 Lever arm 13 Bottom surface of insulating housing 14 Top plate 14a Inner surface 15 Side plate 16 Engaging rod 16a Engaging part 17 Engaging part 18 Operating protrusion 19 Engaging protrusion 20 Engaging protrusion 21 Flat type Flexible cable 22 Connection end 23 Fixed leg

Claims (4)

[Scope of utility model registration request] 1. An insulating housing having an insertion opening for a flat flexible cable at a front end thereof, and contact beams of a plurality of conductive terminals mounted in parallel inside the housing facing the insertion opening, and a rear portion of the insulating housing. A cover rotatably provided in the front-rear direction of the insulating housing is provided at the upper end side, and the conductive terminal is integrated with a base beam and a U-shaped contact beam via a connecting portion. The engaging arm is provided at the rear end side, and the arm is continuously provided at the rear side of the contact beam, and the engaging portion is formed by the engaging arms of the plurality of conductive terminals arranged in parallel. And the engaging portion of the cover are engaged with each other so that the cover can be rotated, and the lever arm and the rear end side inner surface of the cover are opposed to each other, and the lever is rotated by the rotation of the cover. An electrical connector for a flat type flexible cable, wherein an opposing portion of a U-shaped contact beam can be opened and closed via an arm. 2. The electrical connector for a flat type flexible cable according to claim 1, wherein the lever arm is continuously provided in a rear end extension direction of one of the U-shaped contact beams. 3. The electric cable for a flat type flexible cable according to claim 1, wherein the cover is formed by providing opposite side walls on both sides of the top wall, and the engaging portion of the cover is provided between the lower sides of the rear ends of the side walls. connector. 4. The electric cable for a flat type flexible cable according to claim 3, wherein an engaging projection is provided on the inner surface of the opposite side wall on the front end side so that the engaging projection can be engaged with the engaging projection on the outer surface of the side wall of the insulating housing. connector.