CN110797691B

CN110797691B - Flexible circuit socket, plug and connector assembly

Info

Publication number: CN110797691B
Application number: CN201911125069.6A
Authority: CN
Inventors: 张自财
Original assignee: Kunshan Leijiang Communication Technology Co ltd
Current assignee: Kunshan Leijiang Communication Technology Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2021-03-19
Anticipated expiration: 2039-11-18
Also published as: CN110797691A

Abstract

The utility model provides a flexible circuit socket, including insulator and integrated into one piece in a plurality of conductive terminal on the insulator, the periphery of insulator still is fixed with the metal frame, the metal frame including the cladding in the preceding leg of insulator front end, cladding in the lateral wall in the horizontal outside of insulator and certainly the spacing portion that the relative internal bending of lateral wall tip formed, be formed with the clearance between the spacing portion, the lateral wall top is inwards bent and is formed with the preforming, the preforming with be formed with the grafting space between the insulator upper surface. The application also provides a flexible circuit plug and a flexible circuit connector assembly.

Description

Flexible circuit socket, plug and connector assembly

Technical Field

The present application relates to the field of electrical connectors, and more particularly, to a flexible circuit socket, plug and connector assembly.

Background

The patent No. 201720048628.8 of the republic of china, the specification of which refers to fig. 14, discloses an FPC connector, which includes an insulating body inserted with conductive terminals, metal fixing pieces inserted at both lateral sides of the insulating body, and a metal housing rotating around the insulating body, wherein an FPC cord is first inserted into the metal housing, and the metal housing is finally fastened on the metal fixing pieces by rotation of the metal housing to realize electrical contact between the FPC cord and the conductive terminals. According to the technical scheme, the low height of the product can be realized, but the metal shell is not used for shielding and cannot transmit high-frequency signals.

Disclosure of Invention

Accordingly, there is a need for a flexible circuit jack, a plug and a connector assembly that can achieve high frequency signal transmission.

For solving above-mentioned technical problem, the application provides a flexible circuit socket, including insulator and integrated into one piece in a plurality of conductive terminal on the insulator, insulator's periphery still is fixed with the metal frame, the metal frame including the cladding in the front wall of insulator front end, cladding in the side wall in the horizontal outside of insulator and certainly the spacing portion of the relative internal bending formation of side wall tip, be formed with the clearance between the spacing portion, the side wall top is inwards bent and is formed with the preforming, the preforming with be formed with the grafting space between the insulator upper surface.

Preferably, the insulating body is provided with a plurality of terminal slots in the longitudinal direction, spacers are formed between the terminal slots, the conductive terminal comprises a holding part formed on the insulating body, a solder leg formed by extending from the back of the holding part and a contact elastic arm extending from the front end of the holding part to the terminal slots, and the contact elastic arm comprises a contact part extending to the insertion space.

Preferably, the limiting portion comprises a rear surrounding wall covering the two lateral sides of the rear end of the insulating body, a fixing portion formed by reversely bending and extending the rear surrounding wall, and a limiting surface formed at the bending position of the fixing portion and the rear surrounding wall, the bottom of the fixing portion is bent and extended to form a welding portion, and the bottom of the front surrounding wall and the bottom of the side surrounding wall are bent to form a welding portion.

Preferably, the pressing piece comprises a horizontal pressing part located above the inserting space and an inclined guide part formed by obliquely and upwardly extending from the rear end of the horizontal pressing part, and a clamping structure is arranged on the rear surrounding wall.

In order to solve the technical problem, the application further provides a flexible circuit plug, which comprises a flexible circuit board provided with a butt joint part and a connecting part and a metal shell fixed on the butt joint part, wherein the flexible circuit board comprises a circuit and a coating, an insulating layer of a cable is connected with the flexible circuit board, the circuit is exposed out of a golden finger on the lower surface of the butt joint part, and the metal shell comprises a plate-shaped base part covering the upper surface of the butt joint part, a coating wall formed by downwards extending the periphery of the plate-shaped base part and covering the periphery of the butt joint part, and a position avoiding port formed by backwards extending the connecting part.

Preferably, the width of the butt joint part is greater than that of the connecting part, the insulating layer comprises an upper insulating layer located above the circuit and a lower insulating layer located below the circuit, and a notch for exposing the golden finger is formed below the butt joint part of the lower insulating layer.

Preferably, the metal shell further comprises a pressing portion formed by extending from the plate-shaped base along the position avoiding opening obliquely and backwards and upwards, and the covering walls on two transverse sides of the position avoiding opening are provided with buckle structures.

For solving the technical problem, this application still provides a flexible circuit connector subassembly, including the plug and with the socket of plug butt joint, the socket include insulator and integrated into one piece in a plurality of conductive terminal on the insulator, insulator's periphery still is fixed with the metal frame, the metal frame including the cladding in the preceding leg of insulator front end, cladding in the lateral wall in the horizontal outside of insulator and certainly the lateral wall tip is to the spacing portion of bending formation inwards, be formed with the clearance between the spacing portion, the lateral wall top is inwards bent and is formed with the preforming, the preforming with be formed with the grafting space between the insulator upper surface, the plug is including the flexible circuit board that is equipped with butt joint portion and connecting portion and cover in be fixed in metal casing on the butt joint portion, the flexible circuit board includes circuit, the metal shell comprises a plate-shaped base part covering the upper surface of the butt joint part, a coating wall formed by downwards extending from the periphery of the plate-shaped base part and covering the periphery of the butt joint part, and a position avoiding opening for the backward extension of the connecting part, the plug is firstly obliquely inserted into the inserting space below the pressing sheet of the socket, and then the metal shell is pressed downwards to enable the butt joint part to be completely pressed into the inserting space so as to enable the gold finger to be electrically contacted with the conductive terminal.

Preferably, the width of the butt joint part is greater than that of the connecting part, the limiting part comprises rear surrounding walls coated on two transverse sides of the rear end of the insulating body, a fixing part formed by reversely bending and extending the rear surrounding walls and limiting faces formed at the bending positions of the fixing part and the rear surrounding walls, the bottom of the fixing part is bent and extended to form a welding part, the bottom of the front surrounding wall and the bottom of the side surrounding walls are bent to form a welding part, a gap between the limiting faces corresponds to the avoiding opening to allow the connecting part to extend backwards, and the connecting part is limited between the limiting faces.

Preferably, the pressing piece comprises a horizontal pressing portion located above the inserting space and an inclined guiding portion formed by extending the rear end of the horizontal pressing portion in an inclined upward direction, the metal shell further comprises a pressing portion formed by extending the plate-shaped base portion along the position avoiding opening in an inclined upward direction, and the rear surrounding wall and the cladding walls located on the two lateral sides of the position avoiding opening are provided with buckling structures buckled with each other.

The utility model provides a flexible circuit board socket, plug and connector subassembly are through the fixed metal frame in the periphery of the insulator of socket, and the outer cladding metal casing of the flexible circuit board's of plug butt joint portion, metal casing and then cover insulator's top and cooperation the shielding of signal is realized to the metal frame, can be used to transmit high frequency signal, and can effectively reduce the product height.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of a flexible circuit connector assembly of the present application;

FIG. 2 is a perspective view of a flexible circuit socket of the present application;

fig. 3 is a perspective view of the flexible circuit socket of the present application with the metal frame removed;

FIG. 4 is a cross-sectional view taken along the line B-B in FIG. 3;

fig. 5 is a perspective view of a metal frame of the flexible circuit socket of the present application;

FIG. 6 is a perspective view of a flexible circuit plug of the present application;

FIG. 7 is a perspective view of a metal housing of the flexible circuit plug of the present application

Fig. 8 is a sectional view taken along the broken line a-a shown in fig. 1.

Description of the main Components

A central conductor-11; an insulating layer-12; an isolation layer-13; a tegument layer-14; and (5) an encapsulating layer-15.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 1, the flexible circuit connector assembly of the present application includes a plug a and a socket B mated with the plug a. In the present application, the X direction shown in fig. 1 is the front in the front-rear direction (longitudinal direction), the Y direction is the left in the left-right direction (lateral direction), and the Z direction is the upper side in the up-down direction (vertical direction).

Referring to fig. 2 to 5, the flexible circuit socket B of the present application includes an insulating body 10, a conductive terminal 20 integrally formed on the insulating body 10, and a metal outer frame 30 surrounding the insulating body 10.

The insulating body 10 includes a main body 11, a plurality of terminal grooves 12 opened in the main body 11 in a longitudinal direction, and spacers 15 formed between the terminal grooves 12 and partitioning the terminal grooves 12. A front end portion 14 and a rear end portion 13 that close the terminal groove 12 in the front-rear direction are formed at the front end and the rear end of the terminal groove 12, respectively, and the conductive terminal 20 is integrally formed on the rear end portion 13.

The conductive terminal 20 includes a holding portion 21 formed on the rear end portion 13, a solder leg 22 extending from the rear end of the holding portion 21 to the outside of the insulating housing 10, and a contact spring arm 23 extending forward from the holding portion 21. The contact elastic arm 23 includes an inclined arm 231 extending from the holding portion 21 obliquely upward to above the terminal slot 12, a support arm 233 formed by bending from the top end of the inclined arm 231 and extending obliquely downward, and a contact portion 232 formed at the top end of the inclined arm 231 or the support arm 233. The horizontal position of the contact 232 is higher than the upper surface of the insulating body 10. The free ends of the support arms 233 are located at the rear side of the terminal groove 12 and in a suspended state. The free end bottom of the support arm 233 is formed with a smooth sliding portion 233.

The metal outer frame 30 includes a front wall 31 surrounding the front end of the insulator 10, two side walls 32 bent and extended backward from the two lateral ends of the front wall 31 and surrounding the two lateral ends of the insulator 10, and a limiting portion 33 bent and extended backward from the rear end of the side walls 32. The limiting part 33 includes a rear surrounding wall 331 bent and extended inward from the side surrounding wall 32, a fixing part 333 bent and extended backward from an end of the rear surrounding wall 331, and a limiting surface 332 formed at a bent position of the rear surrounding wall 331 and the fixing part 333. The limiting part 33 is of a U-shaped structure, a gap is formed between the rear surrounding wall 331 and the fixing part 333, and the bottom of the fixing part 333 is bent and extended to form a welding part 334 positioned in the gap. The distance between the stopper surfaces 332 of the two stopper portions 33 is smaller than the distance between the pair of side surrounding walls 32. The bottom of the front wall 31 and the side wall 32 is bent outward to form a welding part 34. The side surrounding wall 32 is bent toward the upper side of the insulating body 10 to form a pressing piece 35, and the pressing piece 35 includes a horizontal pressing portion 351 located above the insulating body 10 and an inclined guiding portion 352 extending obliquely upward from the rear end of the horizontal pressing portion 351.

The metal outer frame 30 surrounds the periphery of the insulating body 10 and clamps the insulating body 10, and an opening (not shown) is formed between the limiting portions 33. The conductive terminals 20 on the insulating body 10 and the metal outer frame 30 are all fixed on a printed circuit board by welding.

As shown in fig. 6 and 7, the flexible circuit plug a of the present application includes a flexible circuit board 50 and a metal shell 40 covering the flexible circuit board 50. The flexible circuit board 50 includes a circuit 53 and insulating layers covering upper and lower sides of the circuit 53. The insulating layers include a lower insulating layer 51 on a lower side of the wiring 53 and an upper insulating layer 52 on an upper side of the wiring 53. The insulating layer comprises a butt joint part 501 and a connecting part 502 formed by extending backwards, a plurality of notches 511 are formed in the position, located on the butt joint part 501, of the lower insulating layer 51, a plurality of golden fingers 54 are formed in the position, located on the notches 511, of the circuit 53, and the golden fingers 54 are exposed out of the notches 511. The width of the abutting portion 501 is larger than the width of the connecting portion 502.

The metal shell 40 includes a plate-shaped base 41 covering the abutting portion 501, a covering wall 42 extending downward from the outer periphery of the plate-shaped base 41, a pressing portion 45 bent and extending obliquely upward from the rear end of the plate-shaped base 41, and a receiving cavity 43 surrounded by the plate-shaped base 41 and the covering wall 42 and configured to receive the abutting portion 501. A position avoiding opening 44 for extending the connecting part 502 is formed at the position of the pressing part 45 at the rear end of the plate-shaped base part 41, and the width of the position avoiding opening 44 is consistent with the width of the connecting part 502. The pressing portion 45 includes a bent portion 451 bent obliquely upward and a pressing end portion 452 extending horizontally rearward from the bent portion 451. The bottom surface of the abutting portion 501 is flush with the bottom surface of the covering wall 42.

As shown in fig. 1 and 8, when the plug a is inserted into the socket B, the front end of the plug a is firstly inserted into the lower portion of the pressing piece 35 of the metal outer frame 30 in an inclined manner, and in the process, the inclined guiding portion 352 facilitates the front end of the plug a to be inserted into the lower portion of the horizontal pressing piece 351; subsequently, the pressing portion 45 is pressed downward to press the plug a into the metal outer frame 35 completely, so that the front wall 31 and the side wall 32 of the metal outer frame 35 clamp the metal shell 40, and at this time, the contact portion 232 of the conductive terminal 20 of the socket B is electrically contacted with the gold finger 54 through the notch 511. The sliding portion 234 of the support arm 233 of the conductive terminal 20 slides forward under the pressure of the flexible circuit board 50 to be deformed, thereby providing an elastic force.

The connecting portion 502 of the flexible circuit board 50 extends backwards along the limiting surfaces 332 of the limiting portions 33, and the connecting portion 502 of the flexible circuit board 50 is limited between the limiting surfaces 332 of the two limiting portions 33.

In an embodiment, the rear end of the covering wall 42 of the metal housing 40 and the inner wall of the rear wall 331 of the limiting portion 33 are provided with a snap structure, such as a matching structure of a groove and a bump, which are fastened with each other, so as to ensure the combining force of the plug a and the socket B.

The utility model provides a flexible circuit board socket, plug and connector subassembly is through the fixed metal frame 40 in socket B's insulator 10's periphery, and the outer cladding metal casing 40 of plug A's flexible circuit board 50's butt joint portion 501, metal casing 40 further cover in insulator 10's top and cooperation metal frame 40 realizes the shielding of signal, can be used to transmit high frequency signal, and can effectively reduce the product height.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A flexible circuit connector assembly comprises a plug and a socket butted with the plug, and is characterized in that the socket comprises an insulating body and a plurality of conductive terminals integrally formed on the insulating body, the periphery of the insulating body is also fixedly provided with a metal outer frame, the metal outer frame comprises a front surrounding wall coated at the front end of the insulating body, a side surrounding wall coated at the transverse outer side of the insulating body and a limiting part formed by oppositely and inwardly bending the end part of the side surrounding wall, a gap is formed between the limiting parts, the top part of the side surrounding wall is inwards bent to form a pressing sheet, an inserting space is formed between the pressing sheet and the upper surface of the insulating body, the plug comprises a flexible circuit board provided with a butting part and a connecting part and a metal shell coated on the butting part, the flexible circuit board comprises a circuit, an insulating layer coated on the circuit and a gold finger connected with the circuit and exposed out of the lower surface of the butting part, the metal shell comprises a plate-shaped base part covering the upper surface of the butting part, a cover wall formed by downward extending of the periphery of the plate-shaped base part and covering the periphery of the butting part, and a position avoiding opening for backward extending of the connecting part, the plug is firstly obliquely inserted into the inserting space below the pressing sheet of the socket, and then the metal shell is pressed downwards to enable the butting part to be completely pressed into the inserting space so as to enable the golden finger to be electrically contacted with the conductive terminal.

2. The flexible circuit connector assembly of claim 1, wherein the width of the abutting portion is greater than the width of the connecting portion, the limiting portion includes a rear wall covering lateral sides of the rear end of the housing, a fixing portion formed by bending and extending the rear wall in a reverse direction, and limiting surfaces formed at the bending portions of the fixing portion and the rear wall, the fixing portion is bent and extended at a bottom thereof to form a welding portion, the front wall and the side wall are bent at a bottom thereof to form a welding portion, a gap between the limiting surfaces corresponds to the clearance for the connecting portion to extend backward, and the connecting portion is limited between the limiting surfaces.

3. The flexible circuit connector assembly of claim 2, wherein the pressing plate includes a horizontal pressing portion located above the insertion space and an inclined guiding portion extending obliquely upward from a rear end of the horizontal pressing portion, the metal shell further includes a pressing portion extending obliquely rearward and upward from the plate-shaped base along the position of the clearance, and the rear wall and the covering walls located on two lateral sides of the clearance are provided with snap structures for engaging with each other.

4. The flexible circuit connector assembly of claim 1, wherein the housing has terminal slots formed therein, the terminal slots having spacers formed therebetween, the conductive terminal includes a retention portion formed on the housing, a solder tail extending rearwardly from the retention portion, and a contact spring arm extending into the terminal slot from a front end of the retention portion, the contact spring arm including a contact portion extending into the mating space.

5. The flexible circuit connector assembly of claim 4, wherein the limiting portion includes a rear wall covering lateral sides of the rear end of the housing, a fixing portion formed by bending and extending from the rear wall, and a limiting surface formed at a bending portion of the fixing portion and the rear wall, the fixing portion is bent and extending at a bottom to form a welding portion, and the front wall and the side wall are bent and formed at a bottom to form a welding portion.

6. The flexible circuit connector assembly of claim 5, wherein the pressing plate includes a horizontal pressing portion located above the insertion space and an inclined guiding portion extending obliquely upward from a rear end of the horizontal pressing portion, and the rear wall is provided with a snap structure.

7. The flexible circuit connector assembly of claim 1, wherein the mating portion has a width greater than a width of the connecting portion, the insulating layer including an upper insulating layer above the traces and a lower insulating layer below the traces, the lower insulating layer having notches below the mating portion for exposing the gold fingers.

8. The flexible circuit connector assembly of claim 7, wherein the metal shell further includes a pressing portion extending upward and rearward from the plate-shaped base along the position of the clearance opening, and the covering walls on both lateral sides of the clearance opening are provided with a snap structure.