WO2013000314A1

WO2013000314A1 - Flexible printed circuit connector

Info

Publication number: WO2013000314A1
Application number: PCT/CN2012/073858
Authority: WO
Inventors: 钱如旭
Original assignee: 上海乐深电子有限公司
Priority date: 2011-06-30
Filing date: 2012-04-12
Publication date: 2013-01-03
Also published as: CN102856685A

Abstract

A flexible printed circuit (FPC) connector comprising: an insulation body, several first terminals, several second terminals and a cover. The insulation body is provided with a base and two elastic arms. The cover is disposed in a containing area enclosed by the base of the insulation body and two elastic arms, and is capable of switching between an open position and a close position. The second terminal is provided with an upper arm, a lower arm, and a connecting arm for connecting the middle position of the upper arm with the middle position of the lower arm. The upper arm is provided with a contact part at the front end and an action part at the rear end. The upper arm and the lower arm are disposed in parallel. The connecting arm comprises a vertical part and an inclined part, the vertical part extends upward from the lower arm, and the inclined part extends from the vertical part in an inclined manner and is connected to the upper arm, wherein the inclined part and the lower arm form an acute angle. In addition, steps are disposed in a wire slot such that the wire slot is stair-shaped, thus the FPC can be inserted more smoothly.

Description

Flexible circuit board connector

The present invention relates to an electrical connector, and more particularly to a flexible circuit board connector.

Background technique

[0002] Flexible printed circuit boards (FPCs) are widely used in electronic products such as digital cameras, PDAs, and mobile phones because of their good heat dissipation, free bending, and light weight. The flexible circuit board is electrically connected to the corresponding components in the electronic product through a flexible circuit board connector.

As shown in FIG. 7 , the conventional flexible circuit board connector 9 generally includes an insulative housing 90 , a plurality of conductive terminals 92 inserted in the insulative housing 90 , and rotatably pivoted to the insulative housing 90 . A gland 94 on the top. In use, the gland 94 is lifted up and rotated to the open position, so that the flexible circuit board (the component indicated by reference numeral 96 in FIG. 9) is inserted into the insulative housing 90 through an opening provided on the front surface of the insulative housing 90. internal. After the flexible circuit board 96 is inserted and positioned, the cover 94 is closed downward to rotate it to the closed position, so that the flexible circuit board 96 can be clamped inside the connector 9, and the flexible circuit board 96 is Electrical connection is made between the conductive terminals 92.

[0004] However, the design of the conductive terminal 92 of such a connector 9 has a defect that the number of insertion and removal is too small to affect the normal service life of the connector 9. As shown in Fig. 8, the upper arm 920 and the lower arm 922 of the conventional conductive terminal 92 are non-parallel and are tapered at the front end. After the flexible cover is opened or closed by the gland 94 a plurality of times, the elastic force of the upper arm 920 of the conductive terminal 92 is deteriorated to affect the effectiveness of the connection between the flexible circuit board 96 and the connector 9. As shown in Fig. 9, since the wire insertion slot 902 in the insulative housing 90 of the conventional flexible circuit board connector 9 has a substantially rectangular structure, it is not smooth enough when the flexible circuit board 96 is inserted, thereby affecting assembly efficiency.

Accordingly, it would be desirable to provide an improved flexible circuit board connector that overcomes the deficiencies of the prior art described above.

Summary of the invention

[0006] An object of the present invention is to provide a flexible circuit board connector, in which a gland is firmly coupled to an insulative housing, thereby preventing the connection between the conductive terminal and the flexible circuit board from being affected by repeated opening and closing of the gland. , to ensure a stable electrical connection between the flexible circuit board and the conductive terminals and to facilitate the insertion of the flexible circuit board.

[0007] In order to achieve the above object, the present invention provides a flexible circuit board connector, the flexible circuit board connector including an insulative housing, a plurality of first and second terminals and a hub inserted in the insulative housing a gland provided on the insulative housing; the insulative housing has a base portion and two elastic arms extending rearwardly from opposite sides of the base portion, the gland being received on the base portion of the insulative housing and the two elastic arms In a receiving area, it can be switched between an open position and a closed position. The second terminal has an upper arm, a lower arm and a connecting arm connecting the intermediate position of the upper arm and the lower arm, the upper arm having a contact portion at a front end thereof and an operating portion at a rear end thereof; the upper arm Arranged in parallel with the lower arm, the connecting arm includes a vertical portion and an inclined portion extending upward from the lower arm, and the inclined portion is obliquely extended from the vertical portion and connected to the upper arm, wherein the inclined portion and the lower arm Form an acute angle.

[0008] The inclined portion of the second terminal forms an angle with the lower arm of 40-50 degrees.

[0009] The height of the vertical portion of the second terminal is 0.8-1.2 times the thickness of the terminal material. The width of the vertical portion of the second terminal is 1-2 times the thickness of the terminal material.

[0010] Compared with the prior art, the flexible circuit board connector of the present invention is designed as a vertical portion and an inclined portion by connecting the connecting arms of the upper and lower arms of the second terminal, and the inclined portion and the lower arm are formed. The angle between an acute angle improves the stress on the upper and lower arms of the terminal and increases the plug-in resistance of the connector. At the same time, by improving the power strip, the bottom surface of the power strip is stepped, which makes it smoother when the flexible circuit board is inserted.

[0011] The present invention will be further described below in conjunction with the drawings and embodiments.

DRAWINGS

1 is an exploded perspective view of a flexible circuit board connector of the present invention.

2 is an exploded perspective view of another embodiment of the flexible circuit board connector of the present invention.

3 is an assembled perspective view of the flexible circuit board connector of the present invention, wherein the gland is in an open position.

4 is another assembled perspective view of the flexible circuit board connector of the present invention, wherein the gland is in a closed position.

5 is a schematic plan view showing the second terminal of the flexible circuit board connector of the present invention.

6 is a schematic structural view taken along the A-A section line shown in FIG. 3, and also shows that the flexible circuit board is inserted into the socket.

7 is an exploded perspective view of a conventional flexible circuit board connector.

8 is a schematic diagram of conductive terminals of a conventional flexible circuit board connector.

9 is a schematic structural view of a power strip slot of a conventional flexible circuit board connector.

detailed description

[0021] The detailed description and technical contents of the present invention will now be described with reference to the accompanying drawings.

[0022] Referring to FIG. 1 and FIG. 2, the flexible circuit board connector 1 of the present invention includes an insulative housing 10, a plurality of conductive terminals 20 inserted in the insulative housing 10, and a gland pivoted on the insulative housing 10. 50. The conductive terminal 20 is composed of a plurality of first terminals 30 and a plurality of second terminals 40. The first terminal 30 and the second terminal 40 are different in shape, and are inserted into the insulative housing 10 in parallel and spaced apart from the front and rear sides of the insulating body 10, respectively.

[0023] The insulative housing 10 has a base portion 11 having a rectangular shape and extending vertically rearward from the left and right sides of the base portion 11 respectively. Two elastic arms 12. The front end face of the base 11 is provided with a wire insertion slot 13 for insertion of a flexible circuit board (e.g., the component indicated by reference numeral 60 in Fig. 6). The base portion 11 is further provided with a plurality of first terminal slots 15 and second terminal slots 16 which are arranged in parallel and spaced apart from each other, for accommodating the first terminal 30 and the second terminal 40 respectively. The front side of the first and second terminal slots 15, 16 communicates with the power line slot 13, and the rear side communicates with the accommodating area 14.

[0024] Each of the elastic arms 12 on the insulative housing 10 is connected to the side end of the base portion 11 with a slot 17 extending vertically and parallel to the elastic arm 12 to provide elasticity to the resilient arm 12. A shaft groove 18 and a latching groove 19 are defined in the inner side surface of each of the elastic arms 12, and the shaft groove 18 and the snap groove 19 communicate with the accommodating area 14. The shaft groove 18 is provided near the rear end of the elastic arm 12 for pivoting the gland 50. The latching groove 19 is formed at the free end of the elastic arm 12 for engaging the protrusion 59 of the cap 50 on the insulative housing 10 to be locked in a closed position.

The first terminal 30 is inserted into the first terminal slot 15 of the insulative housing 10 from the front, and has an upper arm 31, a lower arm 32, and a connecting arm 33 connecting the upper arm 31 and the lower arm 32. The upper arm 31 is located on the front and rear sides of the connecting arm 33, and is provided with a contact portion 34 and an actuating portion 35, respectively. The front side structure of the lower arm 32 on the connecting arm 33 has a soldering portion 37 for surface bonding and bonding to a corresponding conductive contact on a circuit substrate (not shown), thereby mounting the flexible circuit board connector 1 of the present invention. Electrically bonded to the circuit substrate. The lower arm 32 is further provided with a downwardly and rearwardly extending claw 38 adjacent to the bottom edge of the welding portion 37 for engaging with the front end edge of the lower wall of the base portion 11 of the insulative housing 10 to fix the first terminal 30. In the insulating body 10. The lower arm 32 is further provided with an upwardly extending fixed contact 39 on the upper surface between the claw 38 and the connecting arm 33.

The second terminal 40 is inserted into the second terminal slot 16 of the insulative housing 10 from the rear, and has an upper arm 41, a lower arm 42 and a vertical position connecting the intermediate position of the upper arm 41 and the lower arm 42 in parallel with each other. Connecting arm 43. As shown in the enlarged view of the second terminal 40 shown in FIG. 5, the connecting arm 43 has a vertical portion 433 and an inclined portion 434, wherein the vertical portion 433 extends vertically upward from the upper surface of the lower arm 32, and the inclined portion 434 A certain angle extends obliquely rearward from the vertical portion 433 and is coupled to the upper arm 31. The angle is 40-50 degrees. The height B of the vertical portion is 0.8-1.2 times the thickness of the terminal material, and the width A is 1-2 times the thickness of the terminal material.

[0027] The upper arm 41 is respectively provided with a contact portion 44 and an actuating portion 45 on the front and rear sides of the connecting arm 43. A movable contact 440 protrudes from the end of the contact portion 44 for electrically contacting a corresponding conductive contact on the top surface of the flexible circuit board. The front side structure of the lower arm 42 at the connecting arm 43 has a holding portion 46 and a fixed contact 49. The fixed contact 49 protrudes upwardly and is disposed opposite to the movable contact 440 disposed on the upper arm 41 for electrically contacting a corresponding conductive contact on the bottom surface of the flexible circuit board. The rear side structure of the lower arm 42 at the connecting arm 43 has a soldering portion 47 for surface bonding and bonding to a corresponding conductive contact on the circuit substrate, thereby mounting and electrically connecting the flexible circuit board connector 1 of the present invention to the circuit. Substrate. The lower arm 42 is further provided with a downwardly and forwardly extending claw 48 adjacent to the bottom edge of the welding portion 47 for engaging the insulating body. 10 The rear end edge of the lower wall of the base 11. The lower arm 42 is provided with a recess 420 and a protruding structure 421 (refer to the reference numerals in FIG. 5) on the upper surface between the welded portion 47 and the connecting arm 43 to further improve the overall rigidity of the second terminal 40.

As shown in FIG. 6, the front end of the insulative housing 10 of the present invention has a power strip 13 for receiving the flexible circuit board 60. The lower surface of the wire insertion slot 13 forms a step 161 away from the inlet to allow the flexible circuit board 60 to be inserted into the wire insertion slot 13 more smoothly.

[0029] Referring to FIG. 3 and FIG. 4 again, when assembling the flexible circuit board connector 1 of the present invention, the first terminal 30 is inserted into the first terminal slot 15 from the front side of the insulative housing 10, The second terminal 40 is inserted into the second terminal slot 16 from the rear side of the insulative housing 10, so that the claws 38 and 48 at the bottom of the first and second terminals 30 and 40 are respectively engaged with the insulative housing 10. The first and second terminals 30, 40 are inserted into the insulative housing 10 in parallel and at intervals. The soldering portions 37 and 47 of the first and second terminals 30 and 40 respectively protrude from the front end surface and the rear end surface of the base portion 11 of the insulative housing 10 to be respectively soldered to corresponding contacts of the circuit substrate to connect the flexible circuit board of the present invention. The surface of the device 1 is adhesively bonded to the circuit substrate. The contact portions 34, 44 of the first and second terminals 30, 40 are arranged side by side in the upper wall of the base portion 11 and the movable contacts are exposed to each other in the socket portion 13, and the actuating portions 35, 45 are The rear end faces of the base portion 11 of the insulative housing 10 are protruded side by side substantially in the same length. The gland 50 is then inserted into the corresponding shaft groove 18 on the elastic arm 12 of the insulative housing 10 in an inclined manner, and the cam portion 58 at the bottom thereof is received on the upper surface of the lower arm 42 of the second terminal 40. The recess 420 is disposed so that the gland 50 is rotatably pivoted on the two elastic arms 12 of the insulative housing 10 with the cam portion 58 as a pivot point. At this time, the operating portions 35, 45 of the first and second terminals 30, 40 are housed in the corresponding receiving grooves 55 provided on the top surface of the gland 50.

[0030] In summary, the flexible circuit board connector 1 of the present invention is designed as a vertical portion 433 and an inclined portion 434 by connecting the connecting arms 43 of the second terminal 40 for connecting the upper and lower arms 41, 42. And the inclined portion 434 forms an acute angle with the lower arm 42, so that the actuating portion 45 can be made more powerful, and the upper arm 41 can be driven to rebound vigorously. It can be seen that the above-mentioned design can improve the stress state of the upper and lower arms 41, 42 of the second terminal 40, thereby increasing the plugging resistance of the connector 1. At the same time, by improving the wire insertion slot 13, a step 161 is provided on the lower surface of the wire insertion slot 13 to be stepped, so that the flexible circuit board 60 is inserted more smoothly.

Claims

Claim

A flexible circuit board connector comprising: an insulative housing; a plurality of first terminals and a plurality of second terminals inserted in the insulative housing; and a gland pivotally mounted on the insulative housing; The utility model has a base portion and two elastic arms extending rearward from the two sides of the base portion. The pressure cover is accommodated in a receiving area of the base portion and the two elastic arms of the insulating body, and can be opened in an open position. Switching between a closed position, wherein: the second terminal has an upper arm, a lower arm, and a connecting arm connecting the intermediate position of the upper arm and the intermediate position of the lower arm, the upper arm having a contact portion at a front end thereof An actuating portion at a rear end thereof; the upper arm and the lower arm are disposed in parallel, the connecting arm includes a vertical portion and an inclined portion, the vertical portion extends upward from the lower arm, and the inclined portion extends obliquely from the vertical portion And connected to the upper arm, wherein the inclined portion forms an acute angle with the lower arm.

2. The flexible circuit board connector according to claim 1, wherein an angle formed by the inclined portion of the second terminal and the lower arm is 40-50 degrees.

3. The flexible circuit board connector according to claim 1, wherein: the height of the vertical portion of the second terminal is 0.8 to 1.2 times the thickness of the terminal material.

4. The flexible circuit board connector according to claim 3, wherein: the width of the vertical portion of the second terminal is 1-2 times the thickness of the terminal material.

5. The flexible circuit board connector according to claim 1, wherein: the insulative housing forms a wire insertion slot, and a step is formed on a lower surface of the wire insertion slot.