CN201266698Y - Electric connector - Google Patents

Abstract

An electric connector used for electrically connecting a flexible printed circuit board comprises an insulated body, a plurality of terminals contained in the insulated body and a turning pressure plate arranged on the insulated body. The terminal comprises a pivot part, an upper contact arm and a lower contact arm extending from the pivot part and a pivotal arm extending along the opposite direction of the upper contact arm from the pivot part. The lower end of the pivot part is provided with a bump leaning against the insulated body. The bump elevates the lower contact arm, thus leading the lower contact arm to have a space for elastic deformation. The turning pressure plate can pivotally rotate between an open position and a closed position and comprises a cam part matched with the pivotal arm. When the turning pressure plate switches from the open position to the closed position, the upper contact arm and the lower contact arm closely clamp a butt object. While fixing the terminals, the bump can also share the working force borne by the pivot part so as to prevent the loss of elastic deformation of the pivot part and prolong the service life of the electric connector.

Description

electrical connector

【Technical field】

The utility model relates to an electric connector, in particular to an electric connector connected with a flexible printed circuit board.

【Background technique】

An electrical connector disclosed in Chinese Patent Application Publication No. 101043107 is used for electrically connecting a flexible printed circuit board to a circuit board. The electrical connector has an elongated insulating body, a plurality of terminals accommodated in the insulating body, and a movable component that can rotate at an open position and a closed position. The insulating body has an upper wall and a lower wall, and the upper wall and the lower wall enclose a slot for accommodating a flexible printed circuit board. The terminal has a fulcrum, an upper contact arm and a lower contact arm extending from the fulcrum into the slot, and a support arm extending from the fulcrum to the opposite side of the slot. The movable member has a cam portion cooperating with the supporting arm. When the movable member is in the open position, the flexible printed circuit board can be inserted into the slot, and when the movable member is in the closed position, the cam portion acts on the supporting arm and moves the upper contact arm into the slot, thereby enabling The upper contact arm and the lower contact arm press against the flexible printed circuit board to achieve electrical connection.

Because the lower contact arm abuts against the lower wall of the insulating body, when the flexible printed circuit board is inserted into the slot, the flexible printed circuit board abuts against the lower contact arm. When the turning plate rotates from the open position to the closed position, the upper contact arm takes the fulcrum as the fulcrum, and the upper contact arm elastically deforms, so that the upper and lower contact arms clamp the flexible printed circuit board to achieve electrical connection. However, after the electrical connector of this structure is docked, the action point of the upper contact arm is always applied to the fulcrum part. After the docking time is too long, the fulcrum part loses its elastic deformation. The arms may not return to their original position, making it difficult to reinsert the flexible printed circuit board.

Therefore, in view of the above problems, it is necessary to propose a new electrical connector to solve the above problems.

【Content of utility model】

The technical problem to be solved by the utility model is to provide an electrical connector that prolongs the service life of terminals.

In order to solve the above problems, the electrical connector of the utility model adopts the following technical scheme: an electrical connector for connecting with a docking object, which includes: an insulating body, a plurality of terminals, and a transfer plate; the insulating body has an upper wall and a lower wall, and the upper wall and the lower wall form slots; the terminals are arranged and held in the insulating body, and the terminals are provided with a fulcrum, an upper arm extending from the upper end of the fulcrum, and a lower arm extending from the lower end of the fulcrum One end of the upper arm is provided with an upper contact arm extending into the slot, the other end is provided with a pivot arm, and the lower arm is provided with a lower contact arm opposite to the upper contact arm; the turning plate can be in the open position and closed Pivoting between positions; the turning pressing plate is provided with a pivoting part matched with the pivoting arm. When the turning pressing plate turns from the open position to the closed position, the pivoting part pushes the pivoting arm upward so that the contact arm and The docking object is electrically connected; the lower end of the fulcrum part is provided with a bump, and the bump leans against the lower wall, so that a gap is formed between the lower contact arm and the lower wall.

Compared with the prior art, the electrical connector of the present utility model has the following beneficial effects: the bump provided at the lower end of the fulcrum part can also share the force borne by the fulcrum part while holding the terminal, thereby preventing the fulcrum part from being overstressed. Losing the elastic deformation, when the flexible printed circuit board is replaced again, the upper contact arm can be restored to its original position, which facilitates the insertion of the flexible printed circuit board and prolongs the service life of the electrical connector.

【Description of drawings】

Fig. 1 is a three-dimensional assembled view of the electrical connector of the present invention.

Fig. 2 is a three-dimensional assembled view of another angle of the electric connector of the present invention.

Fig. 3 is a three-dimensional exploded view of the electrical connector of the present invention.

Fig. 4 is a three-dimensional exploded view from another angle of the electrical connector of the present invention.

FIG. 5 is a cross-sectional view along the direction A-A of FIG. 1 , showing a state where the electrical connector is not docked with the flexible printed circuit board.

FIG. 6 is a cross-sectional view along the direction A-A of FIG. 1 , and shows the state after the electrical connector is docked with the flexible printed circuit board.

【Detailed ways】

Please refer to Fig. 1 and Fig. 2 first, the utility model electric connector 1 is connected on the circuit board (not shown), and the flexible printed circuit board 6 is electrically connected with the circuit board, and the electric connector 1 includes The insulating body 2 , a plurality of terminals 3 accommodated in the insulating body 2 , the switching plate 4 and the metal holder 5 arranged on the insulating body 2 , the terminals 3 are arranged and held in the insulating body 2 . The turning plate 4 can be pivoted so that the terminal 3 is electrically connected to the flexible printed circuit board 6 .

Please refer to FIG. 2 and FIG. 4 , the insulating body 2 has an upper wall 21 and a lower wall 22 , and the upper wall 21 and the lower wall 22 form a slot 23 . Several terminal grooves 24 corresponding to the terminals 3 are provided in the insulating body 2 , and the terminal grooves 24 communicate with the slots 23 and penetrate through the insulating body 2 backward. Positioning parts 25 extend from both ends of the insulating body 2, each positioning part 25 is provided with a positioning block 251, when the electrical connector 1 is connected to the circuit board, the positioning block 251 passes through the circuit board to make electrical connection The device 1 is accurately positioned on the circuit board.

Referring to FIG. 4 and FIG. 5 , the terminal 3 is "H" shaped and includes a fulcrum 31 , an upper arm 32 extending from the upper end of the fulcrum 31 and a lower arm 33 extending from the lower end of the fulcrum 31 . Wherein, the upper arm portion 32 includes an upper contact arm 321 extending into the slot 23 and a pivot arm 322 extending in the opposite direction to the upper contact arm 321; the lower arm portion 33 is also provided with a lower contact arm extending into the slot 23 331, and both the upper contact arm 321 and the lower contact arm 331 are elastic. A contact portion 35 protruding from the end of each contact arm can hold the flexible printed circuit board 6 . Referring to FIG. 5 , there is a space between the upper contact arm 321 and the upper wall 21 of the insulating body 2 for elastic deformation of the upper contact arm 321 . The lower end of the fulcrum portion 31 protrudes downwards against the bump 311 on the lower wall 22 of the insulating body 2. The setting of the bump 311 can raise the lower arm portion 33, so that the gap between the lower arm portion 33 and the lower wall 22 A gap is formed, and the gap between the lower contact arm 331 and the lower wall 22 allows the lower contact arm 331 to be elastically deformable. In this embodiment, the protruding block 311 is a barb-shaped structure, and is located directly below the fulcrum portion 31, and the lower wall 22 is provided with a notch (not labeled) matching with the protruding block 311, then the inverted The thorn-shaped protrusion 311 can be buckled in the notch to keep the terminal 3 stable during the insertion and removal process of the flexible printed circuit board 6 .

The pivot arm 34 extends out of the terminal groove 24 from the fulcrum portion 31 and is connected to the upper contact arm 321. The pivot arm 34 and the upper contact arm 321 form a lever shape through the fulcrum portion 31, and the end of the pivot arm 34 is provided There is a pivoting end 341 , and the pivoting end 341 is provided with a pivoting slot 342 matched with the turning platen 4 .

Extending from the lower arm portion 33 is a welding arm 36 that extends out of the insulating body 2. The welding arm 36 has a welding surface 361 that can be welded on the circuit board and is provided with a holding hook 233, and the holding hook 233 is used for clamping on the circuit board. On the protruding portion 221 of the lower wall 22 of the insulating body 2 , the retaining hook 233 protrudes upwards to form a protrusion 234 abutting against the lower end of the protruding portion 211 , so that the terminal 3 is held on the insulating body 2 .

Please refer to FIG. 4 and FIG. 5 again, the transfer plate 4 is in the shape of a long plate. In order to cooperate with the pivoting end 341 conveniently, several cams 41 acting on the pivoting end 341 are provided at the pivoting slot 342 corresponding to the pivoting end 341 on one side of the turning platen 4 .

Please refer to FIG. 3 , the metal holder 5 is plate-shaped and includes a plate body portion 51 and a holding portion 52 extending from the plate body portion 51 . The insulating body 2 defines receiving grooves 26 for receiving the holders 5 at two ends of the slot 23 .

Please refer to FIG. 2 and FIG. 4 , during assembly, the terminals 3 are accommodated in the terminal slots 24 of the insulating body 2 , and the transfer plate 4 is installed on the insulating body 2 . The pivoting portion 41 of the turning plate 4 is correspondingly accommodated in the pivoting groove 342 . As shown in Figure 5, when the flexible printed circuit board 6 is not inserted into the electrical connector 1, the turning plate 4 is in the open position, and the pivoting arm 34 of the terminal 3 and the upper and lower contact arms 321, 331 are in the original tension. Open state, so the flexible printed circuit board 6 can be easily inserted in the slot 23; The pivoting portion 41 pushes up the pivoting end 341 of the pivoting arm 34 during pivoting, and the pivoting end 341 moves the upper contact arm 321 into the slot 23 through leverage, and clamps together with the lower contact arm 331. Close to the flexible printed circuit board 6, so as to achieve electrical connection.

When the turning plate 4 rotates from the open position to the closed position, the upper arm part 32 elastically deforms the upper contact arm 321 through the fulcrum part 31, and pushes the flexible printed circuit board 6 to the lower contact arm 331. There is a protrusion 311 at the bottom, so that there is a gap between the lower contact arm 331 and the lower wall 22 , so that the upper and lower contact arms and the flexible printed circuit board 6 move downward together to achieve electrical connection. The protrusion 311 can share the force borne by the fulcrum part 31, thereby preventing the fulcrum part 31 from losing its elastic deformation. When the flexible printed circuit board 6 is replaced again, the upper contact arm 321 can return to its original position, which is convenient for the flexible printed circuit board to 6 to prolong the service life of the electrical connector 1.

Claims (8)

1. An electrical connector, which is used to connect with a docking object, comprising: an insulating body, a plurality of terminals, and a transfer plate; the insulating body has an upper wall and a lower wall, and the upper wall and the lower wall form a slot; The terminals are arranged and fixed in the insulating body, and the terminals are provided with a fulcrum, an upper arm extending from the upper end of the fulcrum, and a lower arm extending from the lower end of the fulcrum, and one end of the upper arm is provided with an upper arm extending into the slot. The other end of the contact arm is provided with a pivoting arm, and the lower arm is provided with a lower contact arm opposite to the upper contact arm; the turning pressing plate can pivot between the open position and the closing position; the turning pressing plate is provided with a pivoting arm The pivoting part matched with the arm, when the turning pressure plate turns from the open position to the closing position, the pivoting part pushes the pivoting arm upwards to electrically connect the contact arm with the docking object; it is characterized in that: the fulcrum part A protrusion is provided at the lower end of the lower end, and the protrusion abuts against the lower wall, so that a gap is formed between the lower contact arm and the lower wall. 2. The electrical connector according to claim 1, wherein a gap is formed between the lower arm portion and the lower wall. 3 . The electrical connector according to claim 1 , wherein the bump is barb-shaped, and the lower wall of the insulating body is provided with a notch for matching with the bump. 4 . 4. The electrical connector as claimed in claim 1, wherein the protrusion is located directly below the fulcrum. 5. The electrical connector according to claim 1 or 2, characterized in that: the electrical connector is connected to the circuit board, and the terminal is also provided with a welding arm extending from the lower arm of the insulating body, the The end of the welding arm is provided with a welding surface welded on the circuit board, and the lower wall of the insulating body extends downward in the opposite direction to the contact arm with a protrusion, and the joint between the welding part and the protrusion is provided with a holding hook. The hook abuts against the protrusion. 6 . The electrical connector as claimed in claim 5 , wherein a protrusion protrudes upward from the retaining hook and abuts against a lower end of the protruding portion. 7 . 7. The electrical connector according to claim 1 or 2, characterized in that: the end of the pivoting arm is provided with a pivoting end, and the pivoting end is provided with a pivoting slot matched with the pivoting portion. 8 . The electrical connector according to claim 5 , wherein two ends of the insulating body are respectively extended with positioning portions, and each positioning portion is provided with a positioning block passing through the circuit board. The electrical connector also has a pair of metal holders, the two ends of the slot of the insulating body are provided with accommodating grooves for accommodating the metal holders, and the metal holders are welded on the circuit board.

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