CN212874951U

CN212874951U - EMI-preventing electric connector

Info

Publication number: CN212874951U
Application number: CN202022028728.9U
Authority: CN
Inventors: 邵兵
Original assignee: Suzhou Unitexin Electronic Technology Co ltd
Current assignee: Suzhou Unitexin Electronic Technology Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-04-02
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses a prevent EMI electric connector, it includes insulator, install in conductive terminal, cladding in the insulator the shield shell of insulator, shield shell is frame construction, and it includes the bottom plate, is located the back plate at the rear of bottom plate reaches the curb plate that upwards extends from the bottom plate both sides, certainly a plurality of shell fragments are extended forward to the bottom of back plate, and is a plurality of shell fragment structure is the same, and mutual interval arranges into a line, has elasticity, certainly the bottom plate extends forward and forms a plurality of laminating portion and inserts the portion of closing, and laminating portion is used for laminating in insulator's bottom, inserts the portion of closing and inserts insulator. The joint part positioned below the insulating body can be welded with the circuit board, and the elastic sheet of the shielding shell and the grounding terminal of the flexible circuit board can make the shielding effect of the electric connector more excellent through the shielding shell; the electric connector adopts a multi-layer shielding point design, and the shielding shell is integrally formed, so that the trouble of assembling a plurality of monomers is eliminated.

Description

EMI-preventing electric connector

Technical Field

The utility model relates to an electric connector technical field especially relates to a prevent EMI electric connector.

Background

The electric connector is applied to various industries, particularly automobile electronic equipment, and is more and more used, along with the development of the electric connector for decades, the basic structure of the electric connector is not changed, the electric connector comprises an insulating body, a conductive terminal and a shielding shell, most manufacturers improve the assembly process of each part in order to reduce the production cost of the product and improve the performance of the product, and the structure of each part is improved.

The performance of the shielding shell is mainly anti-EMI electromagnetic interference, and more enterprises improve the shielding shell to improve the anti-EMI electromagnetic interference capability.

For example, CN201320658599.9 discloses an EMI-proof electrical connector and a shielding shell thereof, wherein the electrical connector includes an insulating body, a terminal set, and a shielding shell. The shielding shell comprises a front shell and a rear shell, wherein the front shell covers the outside of the insulating body, the rear shell is used for covering wires, the front shell comprises a front end part and a rear end part, the front end part is used for being sleeved on the insulating body, the rear end part is used for being sleeved on a rear plug of the insulating body, the front end part and the rear end part are of an integrated structure and are integrally formed by bending a metal sheet, and a sealing line is formed on one surface of the front shell. During assembly, the front shell and the rear shell are connected in a hot melting welding or cold welding and riveting mode, and an anti-EMI inner cavity is formed inside the shielding shell.

However, the EMI shielding capability of the electrical connector is effective to achieve the best performance, and it is necessary to improve the EMI shielding capability to provide a new EMI shielding electrical connector to improve the EMI shielding performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent EMI electric connector, its performance that improves shielding EMI electromagnetic interference.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a prevent EMI electric connector, its include insulator, install in conductive terminal, cladding in the insulator the shield shell of insulator, shield shell is frame construction, and it includes the bottom plate, is located the back plate in the rear of bottom plate reaches the curb plate that upwards extends from the bottom plate both sides, certainly a plurality of shell fragments are extended forward to the bottom of back plate, and is a plurality of shell fragment structure is the same, and the mutual interval arranges into a line, has elasticity, certainly the bottom plate extends forward and forms a plurality of laminating portion and inserts the portion of closing, and laminating portion is used for laminating in insulator's bottom, inserts the portion of closing and inserts insulator.

The rear plate is connected with the bottom plate through a pair of connecting arms, the connecting arms are located on two sides of the rear of the bottom plate, two ends of the rear plate are respectively connected with the top ends of the connecting arms, and the rear plate and the connecting arms are perpendicular to the bottom plate.

The attaching portions and the inserting portions are arranged in a crossed mode, and the inserting portions are opposite to the attaching portions and located at higher positions.

The rear surface of the insulating body penetrates through the front surface forwards to form an inserting groove, the inserting part is inserted into the inserting groove of the insulating body, and the attaching part is tightly attached to the lower surface of the insulating body.

The shielding shell is further provided with an extending portion extending forwards from the bottom plate, a bending portion extending from the front end of the extending portion in a bending mode, an elastic portion extending backwards from the bending portion and a blocking portion extending upwards from a side plate of the elastic portion, and the elastic portion is located above the extending portion.

The insulating body comprises an accommodating space formed by backward sinking from the front end, a plurality of through grooves for clamping the conductive terminals are formed by backward sinking from the accommodating space and penetrating through the rear surface of the insulating body, and the insertion grooves are positioned below the through grooves.

Compared with the prior art, the utility model discloses prevent EMI electric connector's beneficial technological effect lies in: the joint part positioned below the insulating body can be welded with the circuit board, and the elastic sheet of the shielding shell and the grounding terminal of the flexible circuit board can make the shielding effect of the electric connector more excellent through the shielding shell; the electric connector adopts a multi-layer shielding point design, and the shielding shell is integrally formed, so that the trouble of assembling a plurality of monomers is eliminated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the three-dimensional structure of the anti-EMI electrical connector of the present invention in butt joint with a circuit board and a flexible circuit board;

FIG. 2 is an exploded view of the EMI resistant electrical connector of FIG. 1;

FIG. 3 is an exploded view of a portion of the assembly shown in FIG. 2;

FIG. 4 is an exploded view of a portion of the assembly of FIG. 3 from another angle;

fig. 5 is a schematic view of the three-dimensional structure of the EMI-proof electrical connector of the present invention in butt joint with the flexible circuit board;

fig. 6 is a partial enlarged view of the shielding shell of the EMI shielding electrical connector of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

As shown in fig. 1 to 6, the present invention discloses an EMI-proof electrical connector for being mounted on a circuit board 6, which includes an insulating housing 1, a conductive terminal 2 mounted in the insulating housing 1, a shielding housing 3 covering the insulating housing 1, and a mounting cover 4 mounted on the shielding housing 3. One end of a conductive terminal 2 of the electric connector is welded with a circuit board 6, and the other end of the conductive terminal 2 is connected with a flexible circuit board 5.

The insulating body 1 includes a receiving space 11 recessed from the front end to the rear, and the receiving space 11 is a structure extending in the transverse direction. The accommodating space 11 is used for accommodating the conductive terminal 2 and the flexible circuit board 5. A plurality of through grooves 12 are formed by the rear surface of the insulating body 1 and are recessed backwards from the accommodating space 11, and the through grooves are arranged side by side and used for clamping the conductive terminals 2. A notch 13 is formed by downwards recessing the upper surface of the insulating body 1, the notch 13 is positioned in front of the accommodating space 11, and the notch 13 is communicated with the accommodating space 11. A pair of receiving grooves 14 are formed by being recessed upward from the lower surface of the insulating body 1 and communicating with the notch 13, the receiving grooves 14 are respectively located at two sides of the notch 13, and a plurality of butt-joint grooves 15 are formed by being recessed forward from the rear surface of the insulating body 1 and communicating with the receiving space 11. The butt-joint grooves 15 are positioned above the through groove 12 and are recessed forward from two side edges of the insulation body 1 to form a butt-joint fixing groove 16. An insertion groove 17 is formed by penetrating the front surface from the rear surface of the insulating body forward, and the insertion groove 17 is positioned below the through groove 12.

The conductive terminal 2 includes a butt portion 21 at the front end, a connection soldering portion 22 at the rear end, and a holding portion 23 between the butt portion 21 and the soldering portion 22. The abutting portions 21 are accommodated in the accommodating space 11, the holding portions 23 are respectively clamped in the through grooves 12, and the holding portions 23 are exposed out of the rear surface of the insulating body 1.

Specifically, the abutting portion 21 is obliquely located in the accommodating space 11, the abutting portion 21 is of a bent structure, and a convex point is formed above the bent structure, so that the upper surface of the abutting portion 21 can be better contacted with the flexible circuit board 5. A pair of asymmetric buckles 231 is formed on two sides of the holding portion 23, and the two buckles 231 are respectively located on two sides of the holding portion 23 and arranged in tandem. The welding part 22 is a straight structure, a connecting part 24 is arranged between the holding part 23 and the welding part 22, the connecting part 24 and the welding part 23 are perpendicular to each other, the tail end of the holding part 23 is connected with the connecting part 24, and the butt joint part 21 and the welding part 23 are not on the same horizontal plane.

The shielding shell 3 is a frame structure made of metal and formed by punch forming. It includes a bottom plate 31, a rear plate 32 located behind the bottom plate 31, and side plates 33 extending upward from both sides of the bottom plate 31. The rear plate 32 is connected to the base plate 31 by a pair of connecting arms 34. The connecting arms 34 are located on two sides of the rear of the bottom plate 31, two ends of the rear plate 32 are respectively connected with the top ends of the connecting arms 34, the rear plate 32 and the connecting arms 34 are perpendicular to the bottom plate 31, a plurality of elastic pieces 320 extend forwards from the bottom of the rear plate 32, the elastic pieces 320 are identical in structure and are arranged at intervals in a line, and certain elasticity is achieved. A plurality of attaching portions 35 and inserting portions 36 are formed by extending forward from the bottom plate 31, the attaching portions 35 and the inserting portions 36 are arranged in a mutually crossing manner, and the inserting portions 36 are located at higher positions relative to the attaching portions 35. The attaching portion 35 is attached to the bottom of the insulating housing 1, and the inserting portion 36 is inserted into the insulating housing 1 to improve the stability of the shielding housing 3 covering the insulating housing 1.

The shielding shell 3 further has an extending portion 37 extending forward from the bottom plate 31, a bending portion 38 extending from the front end of the extending portion 37, an elastic portion 39 extending backward from the bending portion 38, and a blocking portion 310 extending upward from the side plate of the elastic portion 39, wherein the elastic portion 39 is located above the extending portion 37, and the front end of the blocking portion 310 has an inclined portion 311. The side plate 33 has a rotation groove 331 recessed rearward therefrom, and the bottom of the rotation groove 331 has a circular structure. The rotation groove 331 is provided in a harpoon-shaped structure.

The mounting cover 4 includes a cover body 41, a pair of support lugs 42 extending rearward from both ends of the cover body 41, a pressing portion 43 located below the support lugs 42, and a rotating shaft 44 extending outward from the side surfaces of the pressing portion 43. The pressing portion 43 has an arc-shaped structure, the rotating shaft 44 is offset from the center of the pressing portion 43, the distance from the rear end of the edge of the pressing portion 43 to the rotating shaft 44 is greater than the distance from the bottom of the pressing portion 43 to the rotating shaft 44, the front portion of the pressing portion 43 has a semicircular structure, and the rear portion of the pressing portion 43 has a non-semicircular structure with gradually increasing involute. When the rotating shafts 44 are respectively installed in the rotating grooves 331, the bottom of the pressing portion 43 is spaced apart from the elastic portion 39, and when the rotating shafts 44 rotate backward, the rear half portion of the pressing portion 43 gradually presses downward against the elastic portion 39 until the rear of the pressing portion 43 presses downward until the trajectory of the elastic portion 39 moving downward reaches the maximum.

The flexible circuit board 5 includes a board body 51 having a card slot 510 on both sides, an electrical terminal (not shown) located below the board body 51, and a ground terminal 53 located above the board body 51. The electrical terminals are used to be connected to the conductive terminals, and the ground terminal 53 is connected to the spring 320.

During assembly, the conductive terminal 2 is held in the insulating body 1, the mating portion 21 is accommodated in the accommodating space 11, the holding portions 23 are respectively clamped in the through grooves 12, and the holding portions 23 and the connecting portion 24 are exposed out of the rear surface of the insulating body 1. The shielding shell 3 covers the insulating body 1, the bottom plate 31 is located below the insulating body 1, the rear plate 32 is located behind the insulating body 1, the side plates 33 are respectively located at two sides of the insulating body 1, and the plurality of elastic pieces 320 extend into the accommodating space 11 through the abutting grooves 15 and are located above the abutting portion 21 of the conductive electron 2. The fitting portion 35 is closely attached to the lower surface of the insulating body 1, and the insertion portion 36 is inserted into the insertion groove 17 of the insulating body 1. The front end of the side plate 33 is inserted into the fixing groove 16. The receiving groove 14 receives the extending portion 37, the bending portion 38, and the elastic portion 39 of the shield case 3, and the stopper portion 310 is exposed to the receiving space 11. The rotation shaft 44 of the mounting cover 4 is mounted to the rotation groove 331, and the cover body 41 is located in the notch groove 12.

When the flexible circuit board 5 is butted, by rotating the mounting cover 4, the pressing portion 43 presses the elastic portion 39 downward, the blocking portion 310 moves downward along the elastic portion 39, the board body 51 enters the accommodating space 11 rearward along the inclined portion 311, the blocking portion 310 enters the card slot 510, the lower surface of the spring piece 320 contacts the ground terminal 53, and the electrical terminal contacts the butting portion 21. The lid 4 is then rotated and the lid 41 is pressed against the plate 51.

The bonding portion 35 under the insulating body 1 can be soldered to the circuit board, and the elastic sheet 320 of the shielding shell 3 and the grounding terminal 53 of the flexible circuit board 5 can make the shielding effect of the electrical connector more excellent through the shielding shell 3. The electric connector adopts a multilayer shielding point design, the shielding shell is integrally formed, the trouble of assembling a plurality of monomers is saved, the shielding shell 3 is provided with the elastic part 39 and the blocking part 310, and when the elastic part is butted with the flexible circuit board 5, the blocking part 310 is matched with the clamping groove 510, so that the flexible circuit board 5 is effectively protected from being separated from the electric connector; through the bottom semicircular arc design of the pressing part 43 of the mounting cover 4, the elastic part 39 is pressed after the semicircular rotation, so that the blocking part 310 moves along with the overturning of the mounting cover 4, and the flexible circuit board 5 can be conveniently and freely inserted and pulled out; the asymmetric structure buckle 231 is adopted in the mode that the conductive terminal 2 fixes the insulating body 1, so that the whole space is saved, and the terminal fixing mode is more stable without looseness. The fixing of the rotary groove 331 and the rotary shaft 44 of the integral harpoon structure enables the mounting cover 4 to be freely turned over without fear of falling.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims

1. An anti-EMI electric connector comprises an insulating body, a conductive terminal arranged in the insulating body and a shielding shell covering the insulating body, and is characterized in that: the shielding shell is of a frame structure and comprises a bottom plate, a rear plate located behind the bottom plate and side plates extending upwards from two sides of the bottom plate, a plurality of elastic pieces extend forwards from the bottom of the rear plate, the elastic pieces are identical in structure and are arranged in a row at intervals, the bottom plate is elastic, a plurality of attaching portions and inserting portions are formed by extending forwards the bottom plate, the attaching portions are attached to the bottom of the insulating body, and the inserting portions are inserted into the insulating body.

2. The EMI protected electrical connector of claim 1, wherein: the rear plate is connected with the bottom plate through a pair of connecting arms, the connecting arms are located on two sides of the rear of the bottom plate, two ends of the rear plate are respectively connected with the top ends of the connecting arms, and the rear plate and the connecting arms are perpendicular to the bottom plate.

3. The EMI protected electrical connector of claim 1, wherein: the attaching portions and the inserting portions are arranged in a crossed mode, and the inserting portions are opposite to the attaching portions and located at higher positions.

4. The EMI protected electrical connector of claim 3, wherein: the rear surface of the insulating body penetrates through the front surface forwards to form an inserting groove, the inserting part is inserted into the inserting groove of the insulating body, and the attaching part is tightly attached to the lower surface of the insulating body.

5. The EMI protected electrical connector of claim 4, wherein: the shielding shell is further provided with an extending portion extending forwards from the bottom plate, a bending portion extending from the front end of the extending portion in a bending mode, an elastic portion extending backwards from the bending portion and a blocking portion extending upwards from a side plate of the elastic portion, and the elastic portion is located above the extending portion.

6. The EMI protected electrical connector of claim 5, wherein: the insulating body comprises an accommodating space formed by backward sinking from the front end, a plurality of through grooves for clamping the conductive terminals are formed by backward sinking from the accommodating space and penetrating through the rear surface of the insulating body, and the insertion grooves are positioned below the through grooves.