CN209896309U

CN209896309U - FPC connector

Info

Publication number: CN209896309U
Application number: CN201921096106.0U
Authority: CN
Inventors: 洪新江; 张颖
Original assignee: ZHEJIANG XINFUER ELECTRONIC Co Ltd
Current assignee: ZHEJIANG XINFUER ELECTRONIC Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-01-03
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a FPC connector, which comprises a base, a terminal and a gland, wherein the upper part of the front end of the base is provided with an caulking groove, the terminal is fixed on the base and is provided with a power connection part and a welding leg, the gland can be rotatably arranged on the upper part of the caulking groove on the base, and the gland is limited with the base through a buckle structure after being closed; the base is provided with jacks at two side ends of the caulking groove, positioning pieces are inserted in the jacks in an interference manner and provided with fixing piece portions and bending piece portions, a grounding cantilever extending backwards in the caulking groove is arranged at the rear portion of each bending piece portion, the distance between the bottommost portion of the grounding cantilever and the bottom wall of the caulking groove in a normal state is larger than the thickness of an FPC (flexible printed circuit) flat cable, the free end of the grounding cantilever is downwards abutted and pressed by the abutting portion on the grounding cantilever when the pressing cover is covered, and a folding edge formed by upwards bending is arranged at the edge of the front end, perpendicular to the positioning pieces. The utility model provides a good reliability is connected to FPC connector's ground connection to bending piece portion non-deformable on the spacer.

Description

FPC connector

Technical Field

The utility model relates to a FPC connector belongs to electric connector structural design field.

Background

Since a Flexible Printed Circuit (FPC) is often interfered by external signals during signal transmission, a shielding layer (or a grounding region) is disposed on the surface of the FPC to shield the external signals, and the shielding layer is in contact with a connector to ground the FPC, so that noise collected on the FPC is removed to a ground loop. In the prior art, the grounding terminal on the FPC connector is completely connected with the grounding part on the FPC flat cable by means of self elasticity, however, the elasticity of the grounding terminal is influenced after the FPC flat cable is connected in a plugging mode for many times, so that the grounding terminal cannot be well contacted with the FPC flat cable, the problem of poor contact is easily caused, and the grounding terminal is easily deformed under the action of external force during installation and use.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a rational in infrastructure FPC connector has the advantage that the ground connection reliability is good.

Realize the utility model discloses the technical scheme of purpose is:

a FPC connector comprises a base, a terminal and a gland, wherein the upper part of the front end of the base is provided with an embedding groove, the terminal is fixedly arranged on the base and is provided with an electric connection part which extends into the embedding groove and is suitable for being electrically connected with a FPC (flexible printed circuit) cable and a welding leg which extends out of the base and is used for being electrically connected with an external circuit board, the gland is rotatably arranged at the upper part of the embedding groove on the base, and the gland is covered and limited with the base through a buckle structure; the utility model discloses a flexible printed circuit board, including caulking groove, base, locating piece, fixed piece portion, bending piece portion, ground connection cantilever bottommost distance, the interval of caulking groove diapire is greater than the thickness of FPC winding displacement, it will to support the portion of pressing on it when the gland lid closes the free end of ground connection cantilever supports downwards and presses, be perpendicular to on the bending piece portion the front end edge of locating piece has the hem of upwards bending the formation.

In the technical scheme, the front end of the base is arranged at the two side ends of the caulking groove, the bottom of the gland is provided with a lapping part, and the lapping part is abutted against the supporting plane after the gland is covered.

In the above technical scheme, the buckle structure comprises a buckle platform formed at the side end of the gland and a buckle groove formed on the base, and the buckle platform and the buckle groove are matched to limit the gland at a covering position.

In the above technical solution, the grounding cantilever has a V-shaped bend.

In the technical scheme, the electric connection part is a conductive cantilever extending forwards, a first conductive bump and a second conductive bump are arranged at the front end of the conductive cantilever, the first conductive bump is positioned at the front part of the second conductive bump, and the height of the first conductive bump is higher than that of the second conductive bump;

the bottom wall of the caulking groove is provided with a limiting groove for limiting each conductive cantilever, and the bottom of the limiting groove and the position corresponding to the front end of each conductive cantilever are provided with an up-and-down through avoiding hole.

In the above technical scheme, the positioning piece is provided with a convex tooth, and the convex tooth is triangular.

In the above technical scheme, the edge of the fixed sheet part is provided with a notch.

In the technical scheme, the two sides of the caulking groove are provided with hooking platforms matched with the notches on the lateral parts of the FPC flat cable.

In the above technical scheme, the front part of the caulking groove is provided with a slope surface.

The utility model discloses has positive effect: in the FPC connector of the utility model, the positioning piece is welded with the fixed part on the circuit board through the fixed piece part to play the role of fixing the FPC connector, the grounding purpose is realized through the contact of the grounding cantilever and the grounding part on the FPC flat cable, the pressing part on the pressing cover when the pressing cover is closed presses the free end of the grounding cantilever downwards, so that the grounding cantilever is reliably contacted with the grounding part on the FPC flat cable, the grounding conduction performance is realized, and the grounding connection reliability is good; in addition, the bent edge which is bent upwards is arranged at the edge of the front end of the bent piece part, so that the effect of reinforcing the bent piece part can be achieved, and the bent piece part is prevented from being deformed easily under the action of external force to influence the use of the electric connector.

Drawings

Fig. 1 is a perspective view of the FPC connector (with the cover open) according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an exploded view of the FPC connector shown in FIG. 1;

FIG. 4 is a schematic structural view of the middle positioning plate of the present invention;

fig. 5 is a top view of the FPC connector (with the cover) according to the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 5;

FIG. 8 is a schematic structural view of the FPC connector of the present invention connected to a FPC cable;

FIG. 9 is a schematic view of the press cover of FIG. 8 shown removed;

fig. 10 is a partial enlarged view of fig. 9 at D.

The reference symbols shown in the figures are: 1-a base; 11-caulking groove; 111-a limiting groove; 112-avoidance holes; 12-a jack; 13-support plane; 14-a catching groove; 15-slope surface; 16-hooking the platform; 2-a terminal; 21-a conductive cantilever; 22-solder feet; 23-a first conductive bump; 24-a second conductive bump; 3-pressing the cover; 31-a pressing part; 32-a lap joint; 33-buckling the table; 4-FPC flat cable; 41-side notch; 5-a positioning sheet; 51-a stationary sheet portion; 511-notch; 52-bending piece parts; 53-grounded cantilever; 54-convex teeth; and 55-folding the edges.

Detailed Description

The specific structure of the present invention is described below with reference to the attached drawings:

an FPC connector is disclosed, as shown in fig. 1 to 10, and comprises a base 1, a terminal 2 and a gland 3, wherein the upper part of the front end of the base 1 is provided with an embedding groove 11, the terminal 2 is fixed on the base 1 and is provided with an electric connection part which extends into the embedding groove 11 and is suitable for being electrically connected with an FPC (flexible printed circuit) 4 and a welding foot 22 which extends out of the base 1 and is used for being electrically connected with an external circuit board, the gland 3 is rotatably installed on the upper part of the embedding groove 11 on the base 1, and the gland 3 is limited with the base 1 through a buckling structure after being covered; the base 1 is last be in the both sides end of caulking groove 11 is equipped with jack 12, interference is inserted in the jack 12 and is equipped with spacer 5, spacer 5 has stretch out jack 12 be suitable for with external circuit board welded fastening's fixed tab portion 51 and to the caulking groove 11 direction bends the bending tab portion 52 that 90 degrees formed, bending tab portion 52 rear portion has the ground connection cantilever 53 of backward extension in caulking groove 11, under the normality ground connection cantilever 53 bottommost distance the interval of caulking groove 11 diapire is greater than the thickness of FPC winding displacement 4, pressing portion 31 on it will when gland 3 lid closes the free end of ground connection cantilever 53 supports downwards and presses, perpendicular to on the bending tab portion 52 the front end edge of spacer 5 has the hem 55 of upwards bending formation. In the FPC connector in this embodiment, the positioning piece 5 is welded to the fixing portion of the circuit board through the fixing piece portion 51 to fix the FPC connector, and the grounding purpose is achieved by contacting the grounding cantilever 53 with the grounding portion on the FPC cable 4, and the pressing portion 31 on the pressing cover 3 presses the free end of the grounding cantilever 53 downward when the pressing cover is closed, so that the grounding cantilever 53 is reliably contacted with the grounding portion on the FPC cable 4 to achieve the grounding conduction performance, and the grounding connection reliability is good; in addition, the bent edge 55 bent upwards is arranged at the front end edge of the bent piece part 52, so that the bent piece part 52 can be reinforced, and the phenomenon that the bent piece part 52 is easily deformed by external force to influence the use of the electric connector is avoided.

In this embodiment, base 1 front end is in the both sides end of caulking groove 11 is provided with supporting plane 13, gland 3 bottom has overlap joint portion 32, 3 lid of gland closes the back overlap joint portion 32 supports and leans on supporting plane 13, so set up, thereby can close through overlap joint portion 32 when target in place and get close and lean on supporting plane 13 and play the spacing effect of support to gland 3, avoid the transition to press gland 3 down and the problem that brings.

In this embodiment, the fastening structure includes a fastening platform 33 formed at the side end of the gland 3 and a fastening groove 14 formed on the base 1, and the fastening platform 33 cooperates with the fastening groove 14 to limit the gland 3 at the covering position.

In this embodiment, the grounding cantilever 53 has a V-shaped bend.

In this embodiment, the electrical connection part is a conductive cantilever 21 extending forward, a first conductive bump 23 and a second conductive bump 24 are arranged at the front end of the conductive cantilever 21, the first conductive bump 23 is located at the front part of the second conductive bump 24, and the height of the first conductive bump 23 is higher than that of the second conductive bump 24; the bottom wall of the caulking groove 11 is provided with a limiting groove 111 for limiting each conductive cantilever 21, and a position at the bottom of the limiting groove 111 corresponding to the front end of the conductive cantilever 21 is provided with an avoidance hole 112 which is through up and down. By adopting the structure, the FPC flat cable 4 is inserted into the caulking groove 11 from the front, the pressing cover 3 is turned downwards to press the FPC flat cable 4 downwards, the gold fingers on the FPC flat cable 4 generate downward acting force on the first conductive salient points 23 to enable the front ends of the conductive cantilevers 21 to deform downwards, and supports are formed at the rear end edges of the avoiding holes 112, so that the first conductive salient points 23 and the second conductive salient points 24 are in contact with the corresponding gold fingers, and the contact performance is guaranteed.

In this embodiment, the positioning plate 5 has a convex tooth 54, the convex tooth 54 is triangular, and through the design of the convex tooth 54, after the positioning plate 5 is inserted into the insertion hole 12, the convex tooth 54 cooperates with the edge of the insertion hole 12 to play a role in strengthening connection.

In this embodiment, the edge of the fixed piece part 51 is provided with a notch 511, and the notch 511 is adopted to structurally design so as to increase the welding area after the product pasting board is welded, thereby improving the welding firmness after the product pasting board.

In order to enhance the connection reliability of the FPC flat cable 4 and the connector, two sides of the caulking groove 11 are provided with hooking platforms 16 matched with the lateral notches 41 of the FPC flat cable 4, and the lateral notches 41 on the FPC flat cable 4 are matched with the hooking platforms 16 to achieve an anti-dropping effect.

In this embodiment, the front portion of the caulking groove 11 is provided with a slope surface 15, and compared with the original right-angle corner through the oblique angle design of the slope surface 15, the slope surface 15 plays a role of slope guiding, and the FPC flat cable 4 is not easily broken at this position.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. The FPC connector comprises a base (1), a terminal (2) and a gland (3), wherein an embedded groove (11) is formed in the upper portion of the front end of the base (1), the terminal (2) is fixedly arranged on the base (1), a power connection portion which extends into the embedded groove (11) and is suitable for being electrically connected with an FPC (4) and a welding pin (22) which extends out of the base (1) and is used for being electrically connected with an external circuit board are arranged on the terminal, the gland (3) is rotatably mounted on the upper portion of the embedded groove (11) on the base (1), and the gland (3) is limited with the base (1) through a buckle structure after being covered; the PCB grounding structure is characterized in that insertion holes (12) are formed in two side ends of the caulking groove (11) on the base (1), a positioning piece (5) is inserted into the insertion holes (12) in an interference mode, the positioning piece (5) is provided with a fixing piece portion (51) which extends out of the insertion holes (12) and is suitable for being welded and fixed with an external circuit board and a bending piece portion (52) which is bent 90 degrees towards the direction of the caulking groove (11), a grounding cantilever (53) which extends backwards in the caulking groove (11) is arranged at the rear portion of the bending piece portion (52), the distance between the bottommost portion of the grounding cantilever (53) and the bottom wall of the caulking groove (11) is larger than the thickness of an FPC flat cable (4) in a normal state, a folding edge (55) which is formed by upward bending is arranged on the bending piece portion (52) and perpendicular to the front end edge of the positioning piece (5), and a pressing portion (31) on the pressing cover (3) presses the free end of the, and the folded edge (55) exposes the gland (3).

2. The FPC connector according to claim 1, wherein the front end of the base (1) is provided with a support plane (13) at both side ends of the caulking groove (11), and the bottom of the cover (3) has a lap joint portion (32), and the lap joint portion (32) abuts on the support plane (13) after the cover (3) is closed.

3. The FPC connector according to claim 2, wherein the snap structure comprises a snap boss (33) formed at a side end of the cover (3) and a snap groove (14) formed on the base (1), and the snap boss (33) cooperates with the snap groove (14) to limit the cover (3) in a covering position.

4. The FPC connector according to claim 1, wherein the grounding cantilever (53) has a V-shaped bend thereon.

5. The FPC connector according to claim 1, wherein the electrical connection part is a conductive cantilever (21) extending forwards, a front end of the conductive cantilever (21) is provided with a first conductive bump (23) and a second conductive bump (24), the first conductive bump (23) is positioned in front of the second conductive bump (24), and the height of the first conductive bump (23) is higher than that of the second conductive bump (24);

be equipped with on the diapire of caulking groove (11) each electrically conductive cantilever (21) carry out spacing groove (111), spacing groove (111) bottom with the position that electrically conductive cantilever (21) front end corresponds is equipped with dodges hole (112) that link up from top to bottom.

6. FPC connector according to any one of claims 1 to 5, characterized in that said positioning tab (5) has a projecting tooth (54) thereon, said projecting tooth (54) being triangular.

7. The FPC connector according to any one of claims 1 to 5, wherein the fixing tab portion (51) has a notch (511) at an edge thereof.

8. The FPC connector according to any one of claims 1 to 5, wherein both sides of the caulking groove (11) are provided with hooking platforms (16) which are matched with side notches (41) of the FPC cable (4).

9. FPC connector according to any one of claims 1 to 5, characterized in that the front of the caulking groove (11) is provided with a ramp surface (15).