CN109273908B

CN109273908B - Electric connector combination

Info

Publication number: CN109273908B
Application number: CN201811028530.1A
Authority: CN
Inventors: 戴拥军
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-09-05
Filing date: 2018-09-05
Publication date: 2020-07-28
Anticipated expiration: 2038-09-05
Also published as: CN109273908A

Abstract

The invention discloses an electric connector combination, which comprises a butting connector and an electric connector backwards spliced with the butting connector, wherein the electric connector comprises an insulating part, a butting part arranged at the rear end of the insulating part, a plurality of first terminals arranged on the butting part and a housing covering the insulating part and the butting part; the butting connector comprises an insulating seat, a plurality of second terminals arranged in the insulating seat and a shell coated outside the insulating seat and the plurality of second terminals, the insulating seat is recessed backwards from the front end face of the insulating seat to form a slot, a plugging space is formed between the shell and the top face of the insulating seat, the butting portion is inserted backwards in the slot, the guide portion is inserted backwards in the plugging space, the part of the shell above the top face of the insulating seat comprises at least one clamping wall, and the clamping wall is inserted forwards in the groove.

Description

Electric connector combination

Technical Field

The present invention relates to an electrical connector assembly, and more particularly to an electrical connector assembly with a stable plug-in connection. Background

The existing electric connector combination comprises an electric connector and a butting connector butted with the electric connector, wherein the butting connector comprises a metal shell, an insulating seat and a terminal arranged in the insulating seat, the rear end of the metal shell is wrapped outside the insulating seat and the terminal, the front end of the metal shell is provided with an insertion part for inserting an insertion space power supply connector, the insertion space is smoothly inserted for ensuring that the insertion part is inserted, the insertion space at the front end of the metal shell is wider, when the electric connector is inserted, the electric connector is easy to shake, the insertion is unstable and easy to trip.

Therefore, there is a need to design a new electrical connector assembly to overcome the above problems.

Disclosure of Invention

The invention aims to provide an electric connector combination which is firmly inserted into each other.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electric connector combination comprises a butting connector and an electric connector which is backwards spliced with the butting connector, wherein the electric connector comprises an insulating part, a butting part arranged at the rear end of the insulating part, a plurality of first terminals arranged on the butting part and a cover shell covering the insulating part and the butting part; the butting connector comprises an insulating seat, a plurality of second terminals arranged in the insulating seat and a shell coated outside the insulating seat and the plurality of second terminals, the insulating seat is concavely arranged backwards from the front end surface of the insulating seat to form a slot, an inserting space is formed between the shell and the top surface of the insulating seat, the butting part is inserted backwards in the slot, the guide part is inserted backwards in the inserting space, the part of the shell above the top surface of the insulating seat comprises at least one clamping wall, and the clamping wall is inserted forwards in the groove.

Furthermore, the shell comprises a bottom wall, a side wall connected to the bottom wall and an upper wall formed by bending and extending the top end edge of the side wall inwards, the upper wall completely covers the top surface of the insulating seat, and the clamping wall is formed by bending and extending the inner edge of the upper wall upwards.

Furthermore, the bottom surface of the insulating base bends downwards and extends forwards to form a fixed block, a fixed groove is formed by the inner wall surface of the fixed block and the bottom surface of the insulating base, and the bottom wall of the shell is inserted backwards into the fixed groove.

Furthermore, two sides of the top surface of the housing are respectively provided with one groove, the guide part is formed between the two grooves on the top surface of the housing, and the grooves are close to the side surfaces of the housing.

Further, the shell has two parallel arrangement the card wall of holding respectively with the recess card is held, the shell includes that a roof is connected in two hold between the wall, the roof, two are held the wall and are reached the top surface of insulating seat encloses to establish into the grafting space.

Furthermore, a through groove is formed in the guiding portion, a clamping hook is arranged in the through groove, a through hole is formed in the top wall, when the electric connector is inserted into the butting connector backwards, the clamping hook is clamped with the through hole, and the through groove is close to the groove.

Further, the guide portion projects rearward from a rear end edge of the abutting portion.

Furthermore, an extension part is formed on one side, away from the guide part, of the groove on the top surface of the cover shell, a guide inclined plane is arranged at the rear ends of the extension part and the guide part, and the guide inclined plane is formed by extending the rear end edges of the extension part and the guide part into the groove.

Furthermore, the outer side surface of the extension part is inwards concave to form a notch.

Furthermore, after the electric connector is inserted into the butting connector backwards, the guide inclined plane is positioned behind the rear end edge of the clamping wall.

Further, the groove penetrates through the upper and lower surfaces of the top surface of the housing in the up-down direction.

Furthermore, the rear end of the side surface of the insulating base is provided with at least one convex block outwards in a protruding manner, the front end surface of the convex block is arranged backwards in a concave manner to form a fixing groove, the rear end edge of the shell extends backwards to form a first welding leg, the first welding leg is inserted backwards into the fixing groove and penetrates backwards through the rear end surface of the convex block, and the first welding leg is used for being welded on a circuit board.

Further, the inner wall surface of the groove clamps the clamping wall.

Compared with the prior art, the rear end edge of the housing of the electric connector is recessed forwards to form the groove, the housing of the butting connector and the top surface of the insulating seat form the inserting space, the guide part is inserted backwards into the inserting space, the part of the housing above the top surface of the insulating seat comprises the clamping wall, and the clamping wall is inserted forwards into the groove, so that after the electric connector is inserted backwards with the butting connector, the housing of the electric connector and the housing of the butting connector are clamped mutually and fastened and cannot shake, and the electric connector and the butting connector are prevented from tripping or shaking.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of an electrical connector of the electrical connector assembly of the present invention;

fig. 2 is an exploded perspective view of a mating connector of the electrical connector assembly of the present invention;

fig. 3 is a perspective view of the electrical connector assembly of the present invention when the electrical connector and the mating connector are not plugged;

FIG. 4 is a perspective view of another perspective view of the electrical connector assembly of the present invention when the electrical connector is not plugged with the mating connector;

fig. 5 is a perspective view of the electrical connector assembly of the present invention after being plugged with the mating connector;

FIG. 6 is a cross-sectional view of the electrical connector assembly of the present invention shown in an unmated state with the mating connector;

fig. 7 is a cross-sectional view of the electrical connector assembly of the present invention after being plugged with a mating connector.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

upper cover 1A and lower cover 1B of cover 1 of electric connector 100

Groove 11 first surface 111 second surface 112 guide 12

Extension 13 opening 14 notch 15 guide ramp 16

Butt tongue plate 2 welding hole 21 butt part 22 first terminal 3

Pad 4 insulation 5 catch 6 base 61

Fixing part 62, pressing part 63, buckling part 64 and hook 65

Through hole 72 of housing 7 retaining wall 71 of mating connector 200

Top wall 76 of side wall 75 of top wall 74 of plug space 73

First leg 78 of bottom wall 77

Terminal module 8

Second terminal 81 contact portion 811 connection portion 812 soldering portion 813

Cylindrical groove 822 insulation seat 9 of insulator 82 fixing column 821

Slot 91 mounting slot 92 terminal slot 93 projection 94

Fixing groove 95, fixing block 96 and fixing groove 97 cable 300

Circuit board 400 through slot 17 exposing slot 18

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

Referring to fig. 3 and 5, the electrical connector assembly of the present invention includes a mating connector 200 and an electrical connector 100 inserted backward into the mating connector 200, wherein the mating connector 200 is used for connecting to a circuit board 400, and the electrical connector 100 is used for connecting to a cable 300.

As shown in fig. 2, fig. 3 and fig. 6, the docking connector 200 includes an insulating base 9, two terminal modules 8 disposed in the insulating base 9, and a housing 7 covering the insulating base 9 and the two terminal modules 8, in this embodiment, the housing 7 is made of metal, but in other embodiments, the invention is not limited thereto. The terminal module 8 includes a plurality of second terminals 81 and an insulator 82 integrally formed outside the plurality of second terminals 81, and the two terminal modules 8 have the same shape.

The front end face of the insulating seat 9 is recessed backwards to form a slot 91, the rear end face of the insulating seat 9 is recessed forwards to form a mounting groove 92, the insulating seat 9 is provided with a plurality of terminal grooves 93 on the upper side and the lower side of the slot 91, the terminal grooves 93 penetrate forwards through the front end face of the insulating seat 9, the terminal grooves 93 are communicated with the slot 91 downwards, and the terminal grooves 93 are communicated with the mounting groove 92 backwards. Two convex blocks 94 are protruded outwards from the rear end of the side surface of the insulating base 9 and are respectively arranged up and down. The two protrusions 94 have a gap in the vertical direction, and a holding groove 95 is formed by outwardly recessing from the surface closely attached to the gap, and the width of the holding groove 95 in the front-back direction is wide in the front and narrow in the back. The bottom surface of the insulating base 9 is bent and extended downwards and then forwards to form a fixing block 96, and a fixing groove 97 is formed between the fixing block 96 and the bottom surface of the insulating base 9.

A fixing post 821 is protruded downwards from one side of the bottom surface of the insulator 82, a cylindrical groove 822 is formed in the other side of the bottom surface of the insulator 82 in an upward concave manner, the fixing post 821 of one terminal module 8 is inserted into the cylindrical groove 822 of the other terminal module 8, and the two terminal modules 8 are assembled together and then are inserted into the mounting groove 92 forwards.

The second terminal 81 includes a connecting portion 812 fixed in the insulator 82, a contact portion 811 extending forward from the connecting portion 812 and protruding out of the insulator 82, and a soldering portion 813 extending backward from the connecting portion 812 and protruding out of the insulator 82, when the two terminal modules 8 are jointly inserted forward into the mounting groove 92, the contact portion 811 of the second terminal 81 is inserted forward into the terminal groove 93, the contact portion 811 is exposed in the insertion groove 91, the soldering portion 813 is soldered on the circuit board 400, the soldering portion 813 is an SMT pin, and may be a DIP pin in other embodiments. The plurality of second terminals 81 are arranged in two rows.

The housing 7 is covered outside the insulating base 9 and the plurality of second terminals 81, and in the embodiment, the housing 7 is made of a metal material, but is not limited thereto. The housing 7 includes a bottom wall 77, two side walls 75 connected to two sides of the bottom wall 77, two upper walls 74 formed by bending and extending inward from top end edges of the two side walls 75, two retaining walls 71 formed by vertically extending upward from inner edges of the two upper walls 74, and a top wall 76 connected between the two retaining walls 71. The two upper walls 74 respectively cover two sides of the top surface of the insulating base 9, and an insertion space 73 is defined between the top wall 76, the two retaining walls 71 and the top surface of the insulating base 9. The width of the insertion space 73 in the left-right direction is smaller than the width of the insulating base 9 in the left-right direction. A through hole 72 is respectively formed on both sides of the top wall 76, and the through hole 72 is close to the retaining wall 71. The two side walls 75 and the two retaining walls 71 respectively extend backward to form two first solder fillets 78 and two second solder fillets 79. The first solder feet 78 are wide in front and narrow in back, and when the housing 7 is assembled outside the insulating base 9 from front to back, the first solder feet 78 are inserted into the holding grooves 95, penetrate through the holding grooves 95 from back, and are soldered to the circuit board 400. The wider portion of the first solder tail 78 is inserted into the wider portion of the retaining groove 95, and the retaining groove 95 stops the first solder tail 78 forward. The rear end edge of the sidewall 75 abuts against the front end surface of the bump 94, and the first solder fillet 78 and the second solder fillet 79 are both soldered on the circuit board 400. Therefore, the housing 7 fixes the insulating base 9 on the circuit board 400, and no extra holding sheet is needed to fix the insulating base 9 on the circuit board 400, thereby simplifying the structure of the electrical connector 100. The rear end edge of the bottom wall 77 is inserted into the fixing groove 97 backward, and the inner wall surface of the fixing groove 97 stops the bottom wall 77 forward, thereby further fixing the housing 7 outside the insulating base 9.

Referring to fig. 1, 4 and 7, the electrical connector 100 includes a tongue plate 2, first terminals 3 disposed on the upper and lower sides of the front end of the tongue plate 2, solder pads 4 disposed on the upper and lower sides of the rear end of the tongue plate 2, an insulating portion 5, a locking member 6 and a housing 1. In this embodiment, the tongue plate 2 is a circuit board, and the first terminal 3 is electrically connected to the pad 4. The welding pad 4 is used for connecting with the cable 300, and two welding holes 21 are arranged on the left side and the right side of the tongue butt joint plate 2. The insulating part 5 is integrally formed outside the rear ends of the cable 300 and the tongue piece 2. The mating tongue 2 includes a mating portion 22 at a front end, the first terminals 3 are disposed at upper and lower sides of the mating portion 22, and when the electrical connector 100 is plugged with the mating connector 200, the first terminals 3 and the second terminals 81 are plugged with each other.

The locking member 6 has a base 61, a fixing portion 62 formed by extending from two sides of the base 61 backward and then bending and extending downward, a pressing portion 63 formed by extending forward from the middle of the base 61, and two latching portions 64 formed by extending the end of the pressing portion 63 to two sides respectively, then bending and extending downward and finally extending forward, the end of each latching portion 64 being provided with a hook 65, the fixing portion 62 is welded in the welding hole 21, so as to fix the locking element 6 on the tongue butt plate 2, the base part 61 is positioned on the top surface of the insulating part 5, the buckling part 64 is accommodated in the through groove 17, the hook 65 protrudes outward above the through slot 17, and when the mating connector 200 is plugged into the electrical connector 100, the latching portion 64 is inserted into the inserting space 73 along with the guiding portion 12, and the hook 65 latches with the through hole 72 of the housing 7 of the mating connector 200. When the lock is unlocked, the pressing part 63 is pressed, and the hook 65 moves downwards and is unlocked with the through hole 72.

The housing 1 covers the tongue-shaped mating portion 2, the first terminal 3, the insulating portion 5 and the locking member 6, and the housing 1 includes an upper housing 1A located above and a lower housing 1B located below. In this embodiment, the housing 1 is made of plastic, but may be made of metal in other embodiments. The upper cover shell 1A and the lower cover shell 1B are fixed in a buckling mode. The front end of the top surface of the upper housing 1A is provided with an opening 14, the pressing part 63 of the locking piece 6 is exposed out of the opening 14, the pressing part 63 can be directly pressed, a part for indirectly pressing the pressing part 63 does not need to be arranged on the housing 1, and the structure is simpler and more convenient. The top surface of the upper housing 1A is respectively provided with two grooves 11 from the two sides of the rear end edge thereof in a forward concave manner. The groove 11 penetrates the upper and lower surfaces of the top surface of the housing 1 in the up-down direction. A guide part 12 is formed between the two grooves 11 at the rear end of the top surface of the upper casing 1A, and an extension part 13 is respectively formed at one side of each groove 11 far away from the guide part 12 at the rear end of the top surface of the upper casing 1A. The groove 11 is close to the side of the housing 1. The extension portion 13 is recessed inwardly from the outer side thereof to form a notch 15. The guide portion 12 and the extension portion 13 are both provided with a guide inclined surface 16, and the guide inclined surface 16 is formed by extending from the rear end edges of the guide portion 12 and the extension portion 13 into the groove 11. The guide slope 16 facilitates guiding the insertion of the retaining wall 71 into the groove 11. Both sides of the guiding part 12 are respectively provided with a through groove 17. The through groove 17 has a smaller opening at the upper side than the lower side in the vertical direction, and extends forward through the front end surface of the guide portion 12, so as to accommodate the latching portion 64. The groove 11 includes two first surfaces 111 arranged in parallel in the front-rear direction and a second surface 112 connected between the two first surfaces 111. The two second faces 112 sandwich the retaining wall 71. The second surface 112 and the holding wall 71 are tightly held, the contact area is large, and the holding force is strong. The side surface of the housing 1 does not exceed the rear end edge of the butt joint part 22 forwards, so that the butt joint part 22 is protected from being touched by external force by mistake. The rear end edge of the bottom surface of the lower housing 1B is recessed forward to form an exposed groove 18, and the abutting portion 22 is exposed outside the exposed groove 18, so that the lower housing 1B can accommodate the mating connector 200, and the space occupied by the electrical connector assembly is reduced. The guiding portion 12 of the cover case 1 extends rearward beyond the rear end edge of the side surface of the cover case 1, so as to guide the electrical connector 100 to be aligned and plugged with the mating connector 200. That is, the guide portion 12 projects rearward from the rear end edge of the abutting portion 22. When the retaining wall 71 is inserted into the groove 11 backwards, the extending portion 13 is elastically deformed outwards, the gap 15 increases the elasticity of the extending portion 13, the extending portion 13 is prevented from being broken, and the groove 11 is clamped with the retaining wall 71.

When the electrical connector 100 is inserted into the mating connector 200 backwards, the guiding portion 12 is inserted into the inserting space 73 of the mating connector 200 backwards, the guiding portion 12 guides the electrical connector 100 to be inserted into the mating connector 200, the retaining wall 71 of the housing 7 is inserted into the groove 11 under the guidance of the guiding inclined surface 16, the retaining wall 71 is clamped by the inner wall surface of the groove 11, the mating tongue plate 2 is inserted into the insertion slot 91, and the second terminal 81 is electrically contacted with the first terminal 3. At the same time, the hook 65 of the locking member 6 is inserted into the insertion space 73 along with the guide portion 12 and is locked with the through hole 72 of the top wall 76 of the housing 7. After the electrical connector 100 is plugged with the mating connector 200, the two first surfaces 111 of the groove 11 clamp the clamping wall 71, so that the clamping wall is not easy to shake left and right, and the buckle is firm and not easy to release. The extension 13 has elasticity, so that the groove 11 can be made to more grip the retaining wall 71. After the electrical connector 100 is inserted into the mating connector 200, the guiding inclined plane 16 is located behind the rear end edge of the retaining wall 71, so that the contact area between the upper surface of the guiding portion 12 and the lower surface of the top wall 76 is the largest, and the retaining is more stable. The groove 11 penetrates the upper and lower surfaces of the top surface of the housing in the up-down direction

In summary, the electrical connector of the present invention has the following advantages:

(1) the retaining wall 71 of the housing 7 is inserted into the groove 11, so that the electrical connector 100 and the docking connector 200 are stably fastened after being plugged, and are not easily disengaged or shaken.

(2) When the retaining wall 71 is inserted into the groove 11, the extending portion 13 is elastically deformed outward, the outer side surface of the extending portion 13 is recessed inward to form the notch 15, so that the elasticity of the extending portion 13 is increased, the extending portion 13 is prevented from being broken, and meanwhile, the groove 11 is clamped with the retaining wall 71.

(3) The guiding portion 12 protrudes backward from the rear end edge of the mating portion 22, the guiding portion 12 can be firstly aligned and inserted into the inserting space 73, and then the mating portion 22 is inserted into the inserting slot 91, and the guiding portion 12 can guide the electrical connector 100 to be firstly aligned with the mating connector 200, so as to facilitate the mutual insertion of the electrical connector assemblies.

(4) The upper wall 74 of the housing 7 covers the top surface of the insulating base 9, and the width of the plugging space 73 is smaller than the width of the insulating base 9, so that not only the docking portion 22 is plugged into the slot 91, but also the guiding portion 12 is plugged into the plugging space 73, so that the electrical connector assembly is plugged more stably, and the housing 7 can be firmly clamped on the insulating base 9, and when the electrical connector 100 is plugged with the docking connector 200, the housing 7 is prevented from being separated from the insulating base 9.

(5) The shell 7 is provided with the first welding feet 78 which are inserted into the holding groove 95 of the insulating base 9 and welded on the circuit board 400, the insulating base 9 is fixed on the circuit board 400 by the first welding feet 78 of the shell 7, no extra holding sheet is needed to hold the insulating base 9 on the circuit board 400, the working procedure is saved, and the electric connector combination structure is simplified.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. An electrical connector assembly comprising a mating connector and an electrical connector for being rearwardly inserted into the mating connector, the electrical connector assembly comprising:

the electric connector comprises an insulating part, a butting part arranged at the rear end of the insulating part, a plurality of first terminals arranged on the butting part and a cover shell covering the insulating part and the butting part, wherein the top surface of the cover shell is concavely provided with at least one groove from the rear end edge forwards, and the top surface of the cover shell comprises a guide part at one side of the groove;

the butting connector comprises an insulating seat, a plurality of second terminals arranged in the insulating seat and a shell covering the insulating seat and the plurality of second terminals, the insulating seat is concavely arranged backwards from the front end surface of the insulating seat to form a slot, an inserting space is formed between the shell and the top surface of the insulating seat, the butting part is inserted backwards into the slot, the guide part is inserted backwards into the inserting space, the part of the shell above the top surface of the insulating seat comprises at least one clamping wall, and the clamping wall is inserted forwards into the groove;

the shell comprises a bottom wall, a side wall connected to the bottom wall and an upper wall formed by inwards bending and extending the top end edge of the side wall, the upper wall is completely covered on the top surface of the insulating seat, and the clamping wall is formed by upwards bending and extending the inner edge of the upper wall.

2. The electrical connector assembly of claim 1, wherein: the bottom surface of the insulating seat is bent forwards and extends downwards to form a fixed block, a fixed groove is formed by the inner wall surface of the fixed block and the bottom surface of the insulating seat, and the bottom wall of the shell is inserted into the fixed groove backwards.

3. The electrical connector assembly of claim 1, wherein: the two sides of the top surface of the cover casing are respectively provided with one groove, the guide part is formed between the two grooves on the top surface of the cover casing, and the grooves are close to the side surfaces of the cover casing.

4. The electrical connector assembly of claim 3, wherein: the shell is provided with two clamping walls which are arranged in parallel and respectively clamped with the grooves, the shell comprises a top wall connected between the two clamping walls, and the top wall, the two clamping walls and the top surface of the insulating base are enclosed into the inserting space.

5. The electrical connector assembly of claim 4, wherein: the guiding part is provided with a through groove, a clamping hook is arranged in the through groove, the top wall is provided with a through hole, when the electric connector is backwards inserted into the butting connector, the clamping hook is buckled with the through hole, and the through groove is close to the groove.

6. The electrical connector assembly of claim 1, wherein: the guide portion protrudes rearward beyond a rear end edge of the abutting portion.

7. The electrical connector assembly of claim 1, wherein: the top surface of the cover shell forms an extension part on one side of the groove far away from the guide part, the rear ends of the extension part and the guide part are respectively provided with a guide inclined plane, and the guide inclined planes are formed by extending the rear end edges of the extension part and the guide part into the groove.

8. The electrical connector assembly of claim 7, wherein: the outer side surface of the extension part is inwards recessed to form a notch.

9. The electrical connector assembly of claim 7, wherein: the electric connector is inserted into the butting connector backwards, and the guide inclined plane is positioned behind the rear end edge of the clamping wall.

10. The electrical connector assembly of claim 1, wherein: the groove penetrates through the upper surface and the lower surface of the top surface of the housing in the vertical direction.

11. The electrical connector assembly of claim 1, wherein: the side rear end of insulating seat is equipped with an at least lug to the evagination, the preceding terminal surface of lug is to the concave formation of establishing a holding groove backward, the rear end edge of shell extends backward and forms a first leg, first leg is inserted backward in the holding groove and is run through backward the rear end face of lug, first leg is used for welding on a circuit board.

12. The electrical connector assembly of claim 1, wherein: the inner wall surface of the groove clamps the clamping wall.