JP3035692U - Electrical connector for flat flexible cable - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] An insulating housing having a plurality of terminals mounted thereon,
An electrical connector for a flat flexible cable consisting of an actuator for pressing the connecting end of the flat flexible cable against the contact piece of the terminal, the actuator being driven by the reaction force of the contact piece when the connecting end is pressed against the contact piece. Provided is an electrical connector for a flat type flexible cable capable of avoiding bending. In the drawings, 1 is an insulating housing, 2 is an actuator, 3 is a flat flexible cable, and 6 are terminals mounted in parallel on the insulating housing 1. Each terminal 6 is provided with a reaction force receiving piece 8 facing the contact piece 7. The actuator 2 is provided with the engaging portion 19, and when the actuator 2 is rotated and slid to press the connecting end portion 3 a against the contact piece 7 of the terminal 6, the reaction force receiving piece 8 and the engaging portion 19 are provided. It engages and opposes the reaction force of the contact piece 7.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a flat flexible cable (FFC: flexible flat cable, FPC: flexible printed circuit board, etc.) and an electrical connector for a flat flexible cable used in a connecting portion of a printed circuit board or the like.

[0002]

[Prior art]

 Conventionally, electrical connectors for flat flexible cables used in the connection between flat flexible cables and printed circuit boards, etc., have an insulating housing in which multiple terminals are mounted in parallel and an opening formed in the insulating housing. It consists of an actuator for pressing the connection end of the inserted flat flexible cable against the contact piece of the terminal. The actuator is rotatably provided with respect to the insulating housing so that the opening of the insulating housing can be opened and closed, and when the opening is closed, the connection end of the flat flexible cable is inserted through the actuator and inside the opening. Are pressed against the contact pieces arranged so as to face each other. ). There is also known a structure in which an actuator is provided so that it can be inserted into and removed from an opening formed in an insulating housing, and the connecting end of a flat flexible cable is pressed against a contact piece when the actuator is inserted.

[0003]

[Problems to be solved by the device]

 In the above-mentioned electrical connector for flat flexible cables, in the connection state in which the connection end of the flat flexible cable is pressed against the contact piece of the terminal through the actuator, the reaction force of the contact piece is, of course, Acts on the actuator via the connecting end of the flat flexible cable. This reaction force increases as the number of terminal poles increases. The actuator is generally molded of insulating plastic, like the insulating housing. For this reason, in a multi-pole (for example, 30 poles or more) flat flexible cable electrical connector having a large number of terminals, the central portion of the actuator may be curved outward due to the reaction force. Then, when the actuator was rotated and slid to the closed position, there was a problem that the actuator could not be installed in the normal state.

The present invention has been made in view of the above problems, and an insulating housing having a plurality of terminals mounted therein and a connecting end of a flat flexible cable inserted in an opening of the insulating housing are provided as terminals. A flat type flexible cable electrical connector consisting of an actuator for pressing against the contact piece, which can prevent the actuator from bending due to the reaction force of the contact piece when the connecting end is pressed against the contact piece. It is intended to provide an electric connector for a flat type flexible cable having a structure.

[0005]

[Means for Solving the Problems]

 The present invention that achieves the above-mentioned object is an insulating housing in which an opening for receiving a connecting end of a flat type flexible cable is formed, and a plurality of terminals having contact pieces facing the opening are mounted in parallel. And an actuator pivotably and slidably provided with respect to the insulating housing for pressing the connection end of the flat flexible cable received in the opening toward the contact piece of the terminal. A flat flexible cable electrical connector, wherein each of the plurality of terminals is provided with a reaction force receiving piece facing the contact piece substantially in parallel with the contact piece, and There is a hooking part that can be inserted into one side of the contact of the force receiving piece.By rotating and sliding the actuator, the flat flexible cable For a flat type flexible cable, characterized in that when the connecting end is pressed against the contact piece of the terminal, the reaction force receiving piece and the engaging portion are engaged with each other to oppose the reaction force of the contact piece. It is an electrical connector.

[0006]

[Action]

 According to the flat type flexible cable electrical connector of the present invention, the reaction force of the contact piece is counteracted by the engagement of the reaction force receiving piece provided on the terminal and the engaging portion provided on the actuator, so that the actuator may react to the contact piece. It is possible to avoid bending under the influence of force. As a result, even if the number of terminals is increased, reliable electrical connection can be secured between all conductors of the flat flexible cable and the contact pieces of all terminals.

[0007]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the attached FIGS.

The flat flexible cable electrical connector of the embodiment includes an insulating housing 1 and an actuator 2. The insulating housing 1 is made of insulating plastic and has an opening 4 formed to receive the connection end 3a of the flat flexible cable 3 on one side. The flat flexible cable 3 is wide in the direction perpendicular to the paper surface of the figure, and the insulating housing 1 accordingly extends in the direction perpendicular to the paper surface and has a predetermined width. A plurality of terminal mounting grooves 5 are formed in the insulating housing 1 at a constant pitch in the width direction, and terminals 6 are mounted in the terminal mounting grooves 5 from the rear surface 1a (right side of the drawing) of the insulating housing 1. ing.

The terminal 6 is punched out from a thin metal plate, and is formed in a cantilevered manner from the base portion 9 with the contact piece 7 and the reaction force receiving piece 8 substantially parallel to each other. A contact portion 7a, which comes into contact with the conductor of the flat flexible cable 3, is formed so as to project inside the tip of the contact piece 7 (on the side of the reaction force receiving piece 8). In addition, inside the tip of the reaction force receiving piece 8 (on the side of the contact piece 7), a hooking protrusion 10 is formed toward the contact piece 7, and it slides toward the base 9 adjacent to the hooking protrusion 10. A rim 11 is formed. On the other hand, a solder tail 12 is formed on the outside of the lower portion of the base 9. When the terminal 6 is mounted in the terminal mounting groove 5 of the insulating housing 1, the contact piece 7 extends along the bottom wall 1b of the insulating housing 1 to face the opening 4 and the reaction force receiving piece 8 is formed. Along the top wall 1c of the insulating housing, it extends beyond the top wall 1c to face the inside of the opening 4, and the solder tail 12 projects outward from the rear surface 1a of the insulating housing 1. . The solder tail 12 is of a type that is surface-soldered to a conductive pattern of a printed circuit board (not shown), and is substantially flush with the bottom surface 1d of the insulating housing 1.

The actuator 2 is a plate-shaped member made of insulating plastic and is attached to the insulating housing 1 so as to be rotatable and slidable so as to open and close the opening 4 of the insulating housing 1. The rotation and slide are performed by a cam guide in which a protrusion 13 and a cam protrusion 14 formed on both sides of the actuator 2, support side walls 15 provided on both sides of the insulating housing 1 and a guide surface 16 on the rear side are formed. It is made possible by the wall 17. That is, the rotation of the actuator 2 is possible around the protrusion 13 that is brought into contact with the supporting side wall 15. Then, when the actuator 2 rotates, the actuator 2 slides so that the cam projection 14 contacts the guide surface 16 of the cam guide wall 17.

A pressing piece 18 is formed along the front edge of the central portion of the actuator 2. The pressing piece 18 is for pressing the connecting end 3a of the flat flexible cable 3 received in the opening 4 of the insulating housing 1 against the contact piece 7. Further, an engaging portion 19 is raised at the front edge of the pressing piece 18, and the pressing piece 18 and the engaging portion 19 are continuous in an L-shaped cross section. A recess 20 is formed in the width direction on the upper surface 2a side of the actuator 2 by the pressing piece 18 and the engaging portion 19 and protrudes into the opening 4 beyond the top wall 1c of the insulating housing 1. The tip portion of the reaction force receiving piece 8 of the terminal 6 can be accommodated.

Next, how the flat flexible cable 3 is connected to the flat flexible cable electric connector configured as described above will be described. 1 to 10 are shown according to the stage in which the rotation of the actuator 2 is advanced. First, as shown in FIGS. 1 and 2, the actuator 2 is rotated clockwise until the upper surface 2a of the actuator 2 contacts the top wall 1c of the insulating housing 1 to open the opening 4 of the insulating housing 1. The connection end 3 a of the flat flexible cable 3 is inserted into the opening 4. The connection end 3 a received in the opening 4 enters between the contact piece 7 and the reaction force receiving piece 8 of the terminal 6 along the contact piece 7. Next, as shown in FIGS. 3, 4 and 5, 6, the actuator 2 is rotated in the direction opposite to the clockwise hand so as to close the opening 4. The rotation at this time is performed around the protrusions 13 formed on both sides of the actuator 2. As the rotation is advanced, the engaging portion 19 of the actuator 2 enters the sliding edge 11 side of the engaging protrusion 10 formed at the tip of the reaction force receiving piece 8 of the terminal 6.

When the rotation of the actuator 2 is further advanced, as shown in FIGS. 7 and 8, the cam protrusion 14 on the actuator 2 side comes into contact with the guide surface 16 of the cam guide wall 17 on the insulating housing 1 side, The actuator 2 rotates with the sliding of the insulating housing 1 toward the rear surface 1a. At this time, the engaging portion 19 formed at the front edge of the actuator 2 contacts the slide edge 11 of the reaction force receiving piece 8, and the pressing piece 18 is connected to the connecting end of the flat flexible cable 3 as the actuator 2 rotates. The part 3a is pressed toward the contact piece 7. 9 and 10 show the state in which the actuator 2 has finished rotating and the opening 4 is closed by the actuator 2 and the connecting piece 3a is sufficiently pressed toward the contact piece 7 by the pressing piece 18 to contact the contact portion. An electrical connection with a good contact pressure is formed between 7a and the conductor of the connection end 3a. The reaction force of each contact piece 7 of the plurality of terminals 6 acts on the actuator 2 side through the connecting end 3a against the pressing pressure of the pressing piece 18 of the actuator 2, but the reaction force of each terminal 6 is increased. The slide edge 11 of the force receiving piece 8 engages with the engaging portion 19 of the actuator 2 and opposes this reaction force. The engaging portion 19 and the reaction force receiving piece 8 engage and oppose the reaction force of the contact piece 7 over the entire width of the actuator 2. As a result, the reaction force of the contact piece 7 does not bend the actuator 2 and the contact pressure between the conductor of the connection end portion 3a and the contact portion 7a of the contact piece 7 is not weakened, and a good electrical connection is made. Can be reliably formed. This is particularly effective when the terminal 6 has multiple poles, for example, 30 poles or more.

[0014]

[Effect of the invention]

 According to the flat type flexible cable electrical connector of the present invention, the reaction force received by the actuator from the contact piece of the terminal is opposed to the engagement portion provided on the actuator by engaging the reaction force reception piece of the terminal. Since no bending occurs, it ensures reliable electrical connection between all conductors of flat flexible cable and contact pieces of all terminals even if the number of terminals is large. There is an effect that can be done.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention in which an actuator is rotated to an open state.

FIG. 2 is a side view of the same state as FIG.

FIG. 3 is a sectional view of the embodiment as well, showing a state in which the actuator is rotated in the closing direction to be substantially vertical.

FIG. 4 is a side view of the same state as FIG.

FIG. 5 is a sectional view of the embodiment, showing a state in which the actuator is further rotated in the closing direction and the cam projection of the actuator is in contact with the cam guide wall of the insulating housing.

FIG. 6 is a side view of the same state as FIG.

FIG. 7 is a sectional view of the embodiment when the actuator is further rotated in the closing direction and the pressing piece of the actuator starts to press the connecting end portion toward the contact piece.

FIG. 8 is a side view of the same state as FIG. 7.

FIG. 9 is also a sectional view of the embodiment, showing a state where the actuator is rotated and slid to a closed position.

FIG. 10 is a side view of the same state as FIG. 9.

[Explanation of symbols]

 1 Insulation housing 1a Insulation housing rear surface 1b Insulation housing bottom wall 1c Insulation housing top wall 1d Insulation housing bottom surface 2 Actuator 2a Actuator top surface 3 Flat flexible cable 3a Flat flexible cable connection end 4 Opening 5 Terminal Mounting groove 6 Terminal 7 Contact piece 7a Contact part 8 Reaction force receiving piece 9 Terminal base 10 Engagement projection 11 Slide edge 12 Solder tail 13 Projection 14 Cam projection 15 Support side wall 16 Guide surface 17 Cam guide wall 18 Holding piece 19 Engagement part 20 Recessed part

Claims (1)

[Utility model registration claims] 1. An insulation in which an opening 4 for receiving a connection end 3a of a flat flexible cable 3 is formed, and a plurality of terminals 6 having a contact piece 7 facing the opening 4 are mounted in parallel. In order to press the housing 1 and the connecting end 3a of the flat flexible cable 3 received in the opening 4 toward the contact piece 7 of the terminal 6, the housing 1 is rotatable and slidable with respect to the insulating housing 1. An electric connector for a flat type flexible cable comprising an actuator 2 provided, wherein a reaction force receiving piece 8 facing a contact piece 7 is provided in each of the plurality of terminals 6 substantially parallel to the contact piece 7. In addition, the actuator 2 is provided with a hooking portion 19 that can enter the contact piece 7 side of the reaction force receiving piece 8, so that the actuator 2 can be rotated and slid. When the connecting end 3a of the flat flexible cable 3 is pressed against the contact piece 7 of the terminal 6, the reaction force receiving piece 8 and the engaging portion 19 engage with each other to oppose the reaction force of the contact piece 7. An electrical connector for a flat type flexible cable, which is configured as follows.