CN109713497B

CN109713497B - Electrical connector

Info

Publication number: CN109713497B
Application number: CN201811465462.5A
Authority: CN
Inventors: 钟维学; 张标
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2020-08-28
Anticipated expiration: 2038-12-03
Also published as: CN109713497A

Abstract

The invention discloses an electric connector, comprising: the body is provided with a slot and two side walls positioned at two opposite sides of the slot, the two side walls extend along a lengthwise direction, each side wall is provided with two end parts positioned at two lengthwise ends of the side wall, the body also comprises a boss formed by outwards protruding one side wall, a convex part formed by upwards protruding the boss, a first groove formed by concavely protruding the boss and a first recess formed by concavely protruding the convex part, and the first recess is arranged far away from the two end parts of the corresponding side wall; the terminals are arranged on the body and protrude into the slots; the metal piece is arranged on the body and contained in the first groove and the first recess, and the boss and the convex part respectively cover a part of the metal piece. The first recess is arranged at the position with smaller warping degree of the body, so that the metal piece is conveniently contained in the first recess, and the first recess can guide the metal piece to be contained in the first groove, so that the convex part and the boss respectively cover one part of the metal piece, and the strength of the body is improved.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly to a PCI-E connector for plugging an electronic card.

Background

At present, the industry provides an electrical connector for inserting an electronic card, the electrical connector includes a longitudinal insulating body, a plurality of conductive terminals accommodated in the insulating body, two metal sheets disposed on the insulating body, and an ear clip disposed at one end of the longitudinal insulating body. The insulating body comprises two side walls extending along the longitudinal direction of the insulating body and two end walls connected with the two side walls, and a slot is formed by the two side walls and the two end walls in a surrounding mode and used for containing the electronic card. The insulating body further comprises clamping blocks and clamping grooves, the clamping blocks are formed by protruding outwards from two longitudinal ends of each side wall respectively, the clamping grooves are formed by concave arrangement of the clamping blocks, two longitudinal ends of each metal sheet are clamped in the two clamping grooves corresponding to the side walls respectively, the two clamping blocks corresponding to the side walls cover the two longitudinal ends of the metal sheet respectively, and therefore the metal sheets are fixed on the corresponding side walls.

However, when the insulating body is formed, the side wall is relatively slender, so the side wall is easily subjected to buckling deformation, and the buckling degree of the side wall generally shows that the buckling degree of the side wall gradually increases from the middle of the side wall to the longitudinal two ends of the side wall, especially the buckling degree of the longitudinal two ends of the side wall is especially serious, so that the longitudinal two ends of the metal sheet cannot be smoothly clamped in the two clamping grooves corresponding to the side wall.

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

Disclosure of Invention

In view of the problems encountered in the background art, an object of the present invention is to provide an electrical connector that facilitates the installation of a metal member on a body to enhance the strength of the body.

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

an electrical connector, comprising: the body is provided with a slot and two side walls positioned at two opposite sides of the slot, the two side walls extend along a longitudinal direction, each side wall is provided with two end parts positioned at two longitudinal ends of the side wall, the body further comprises a boss formed by outwards protruding one side wall, a convex part formed by upwards protruding the boss, a first groove formed by concavely protruding the boss and a first recess formed by concavely protruding the convex part, and the first recess is arranged far away from the two end parts corresponding to the side walls; the terminals are arranged on the body and protrude into the slots; the metal piece is arranged on the body and contained in the first groove and the first recess, and the boss and the convex part respectively cover a part of the metal piece.

Further, the first recess penetrates through one end face of the convex portion, and one end of the metal piece is contained in the first recess.

Furthermore, a lug is formed by upward extending the boss, and the other end of the metal piece is fixedly matched with the lug.

Furthermore, a receiving groove is formed by downwards recessing the top surface of the convex block, the receiving groove extends downwards to the boss and is communicated with the first groove, and the metal piece is contained in the receiving groove and is fixedly matched with the receiving groove.

Further, the first recess is formed by downwards concave setting of the top surface of the convex part, and the first recess extends downwards to the boss and is communicated with the first groove.

Further, the first groove is formed by downwards concave arrangement of the top surface of the boss, and the bottom surface of the first groove is flush with the bottom surface of the first recess.

Furthermore, from the first sunken further downward concave establishment forms an holding tank, the holding tank runs through downwards the boss, the metalwork has a knot portion accept in the holding tank and detain in the bottom of body.

Further, a strengthening piece is arranged on the body and is separated from the metal piece, the body further comprises two convex blocks which are formed by respectively extending upwards from the bosses, the two convex blocks are positioned at two opposite ends of the convex part, the metal piece is fixedly matched with one of the convex blocks, and the strengthening piece is fixedly matched with the other convex block.

Furthermore, the two bumps are respectively connected with the two ends corresponding to the side walls.

Further, the body still includes certainly the boss is concave establishes a second recess that forms and certainly the convex part is concave establishes a second that forms and caves in, the second recess with first recess separates the setting, the second sunken with first sunken separating the setting, just the second is sunken to be kept away from and is corresponded the lateral wall two tip sets up, the reinforcement accept in the second recess with the second is sunken, just the boss with the convex part covers respectively a part of reinforcement.

Further, the second recess penetrates through the other end face of the convex portion, and one end of the reinforcing member is accommodated in the second recess.

Further, the second recess is formed by downwards recessing the top surface of the convex part, and the second recess extends downwards to the boss and is communicated with the second groove.

Further, the second groove is formed by downwards concave arrangement of the top surface of the boss, and the bottom surface of the second groove is flush with the bottom surface of the second recess.

Further, an accommodating groove is further formed by downward concave arrangement from the second recess, the accommodating groove penetrates through the boss downwards, and the reinforcing piece is provided with a fixing part which is accommodated in the accommodating groove and is fixed at the bottom of the body.

Further, the body is provided with a key buckle, the key buckle is connected with the two side walls along a transverse direction, the transverse direction is perpendicular to the longitudinal direction, and the second recess is arranged corresponding to the key buckle in the transverse direction.

Furthermore, a connecting piece is located between the metal piece and the reinforcing piece and is connected with the metal piece and the reinforcing piece, the first recess is formed by downwards recessing the top surface of the convex part and penetrating through two opposite end surfaces of the convex part, the connecting piece is contained in the first recess, and the convex part covers at least one part of the connecting piece.

Further, the body still includes certainly the boss is concave establishes a second recess that forms, first sunken being located between the first recess with the second recess and respectively with the first recess with the second recess is linked together, the connecting piece with the reinforcement accept in the second recess, just the boss covers respectively the connecting piece with a part of reinforcement.

Further, from one of them the top surface of tip is sunken to establish downwards and is formed an embedded groove, the embedded groove runs through the correspondence downwards the tip, the metalwork has a main part and certainly an installation foot that the one end of main part inwards buckles downwardly extending formation again, the main part correspondence accept in first recess with first sunken, just the installation foot correspondence accept in embedded groove and downwardly extending surpass the correspondence the tip.

Further, in the longitudinal direction, the length of the boss is equal to the length of the side wall corresponding to the boss.

Further, in the longitudinal direction, the length of the top of the convex part is smaller than the length of the joint of the convex part and the boss.

Further, the top surface of the convex part is flush with the top surface of the corresponding side wall.

Compared with the prior art, the electric connector has the following beneficial effects:

the first recess is far away from the two end parts corresponding to the side walls, namely the first recess is arranged at a distance from the two end parts corresponding to the side walls in the longitudinal direction, so that the first recess is arranged at a position where the body is small in warping degree, and the metal piece is conveniently accommodated in the first recess. The first recess can guide the metal piece to be accommodated in the first groove, so that the convex part and the boss respectively cover a part of the metal piece to improve the strength of the body.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector and a mating component and an electronic component according to a first embodiment of the present invention;

fig. 2 is an exploded perspective view of the electrical connector of fig. 1;

fig. 3 is an exploded perspective view of the electrical connector of fig. 2 rotated 180 horizontally;

fig. 4 is a perspective cross-sectional view of the electrical connector of fig. 1;

FIG. 5 is a perspective assembly view of the electrical connector of FIG. 4;

FIG. 6 is a right side view of the electrical connector of FIG. 1;

fig. 7 is a cross-sectional view of the electrical connector of fig. 6 taken along the direction a-a;

FIG. 8 is a cross-sectional view of the electrical connector of FIG. 6 taken along line B-B;

fig. 9 is a cross-sectional view of the electrical connector of fig. 6 taken along the direction C-C;

fig. 10 is an enlarged view of a portion a of the electrical connector of fig. 6;

fig. 11 is a perspective assembly view of the electrical connector of the second embodiment of the present invention;

fig. 12 is an exploded perspective view of the electrical connector of fig. 11;

fig. 13 is a right side view of the electrical connector of fig. 11;

fig. 14 is a cross-sectional view of the electrical connector of fig. 13 taken along the direction D-D.

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

[ 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.

As shown in fig. 1, the electrical connector 100 of the present invention defines a mating direction Z, and a longitudinal direction X and a transverse direction Y perpendicular to the mating direction Z and perpendicular to each other.

As shown in fig. 1, an electrical connector 100 according to a first embodiment of the present invention is used for connecting a mating component 200 to an electronic component 300, and the electrical connector 100 includes a body 1, a plurality of terminals 2 accommodated in the body 1, a metal member 3 and a reinforcing member 4 disposed on the body 1, and an ear clip 5 disposed at a rear end of the body 1. The electrical connector 100 is a PCI-E connector, the docking element 200 is an electronic card, and the electronic element 300 is a circuit board. In other embodiments, the electrical connector 100 may be other types of connectors, and other types of components are correspondingly used for the docking element 200 and the electronic element 300. The ear clip 5 is used to lock the docking element 200.

As shown in fig. 1, 2 and 3, the body 1 is made of an insulating material, and the body 1 includes two side walls 11, two end walls 12 connecting the two side walls 11, and a slot 13 defined by the two side walls 11 and the two end walls 12. The two side walls 11 extend along the X direction and are symmetrically disposed with respect to the insertion slot 13, the two end walls 12 extend along the Y direction and are symmetrically disposed with respect to the insertion slot 13, and the insertion slot 13 is used for allowing the docking element 200 to be inserted downward along the Z direction.

As shown in fig. 1, 2 and 3, the body 1 further includes a key 14 connected to the two side walls 11 in the Y direction, the key 14 is disposed in the slot 13 and located between the two end walls 12, and the docking element 200 has a gap 6 for matching with the key 14.

As shown in fig. 2, 6 and 7, each of the side walls 11 has a plurality of terminal holes 111 communicating with the slot 13 in the Y direction, and the terminal holes 111 on the same side wall 11 are arranged in a row in the X direction.

As shown in fig. 2, 7 and 9, each of the side walls 11 has two end portions 112 at two longitudinal ends thereof and an insertion groove 113 formed by being recessed downward from a top surface of each of the end portions 112, the two end portions 112 are disposed corresponding to the two end walls 12 in the Y direction, and the insertion groove 113 penetrates downward through the corresponding end portion 112.

As shown in fig. 2, 3 and 6, the body 1 further includes a boss 15 formed to protrude outward from each of the sidewalls 11, and a protrusion 16 and two protrusions 17 formed to protrude upward from different positions of a top surface of the boss 15. In other embodiments, the body 1 may be provided with the boss 15, the protrusion 16 and the two protrusions 17 on only one of the side walls 11.

As shown in fig. 6, the bottom surface of the boss 15 is flush with the bottom surface of the side wall 11 corresponding thereto, and the length of the boss 15 in the X direction is equal to the length of the side wall 11 corresponding thereto.

As shown in fig. 2, 6 and 9, a first groove 151 and a second groove 152 are respectively formed by recessing downward from the top surface of the boss 15, the first groove 151 and the second groove 152 are spaced apart in the X direction and are located at opposite ends of the protrusion 16, and the first groove 151 is closer to the ear clip 5 than the second groove 152. The first groove 151 and the second groove 152 do not penetrate through the boss 15 downward and do not penetrate through the boss 15 outward, and the bottom surface of the first groove 151 is flush with the bottom surface of the second groove 152.

As shown in fig. 2, 3 and 6, the convex portion 16 is disposed away from the two end portions 112 corresponding to the side walls 11, that is, the convex portion 16 is disposed apart from the two end portions 112 corresponding to the side walls 11 in the X direction. The top surface of the convex portion 16 is flush with the top surface of the corresponding side wall 11, and in the X direction, the length of the top of the convex portion 16 is smaller than the length of the joint of the convex portion 16 and the boss 15. In the present embodiment, the projections 16 gradually decrease in length in the extending direction thereof.

As shown in fig. 2, 3 and 6, a first recess 161 and a second recess 162 are respectively formed by recessing downward from the top surface of the convex portion 16, the first recess 161 and the second recess 162 are spaced apart in the X direction, and the first recess 161 and the second recess 162 are both disposed away from the two end portions 112 corresponding to the side walls 11, that is, the first recess 161 and the second recess 162 are both spaced apart from the two end portions 112 corresponding to the side walls 11 in the X direction.

As shown in fig. 2, 6 and 9, the first recess 161 penetrates the rear end surface of the convex portion 16 rearward in the X direction, the first recess 161 extends downward to the boss 15 and communicates with the first groove 151, and the bottom surface of the first recess 161 is flush with the bottom surface of the first groove 151. A receiving groove 18 is formed by recessing downward from the bottom surface of the first recess 161, and the receiving groove 18 penetrates downward through the boss 15 (refer to fig. 4).

As shown in fig. 2, 6 and 9, the second recess 162 is disposed corresponding to the key 14 in the Y direction, the second recess 162 penetrates the front end surface of the convex portion 16 forward in the X direction, the second recess 162 extends downward to the boss 15 and communicates with the second groove 152, and the bottom surface of the second recess 162 is flush with the bottom surface of the second groove 152. A receiving groove 19 is formed by recessing downward from the bottom surface of the second recess 162, and the receiving groove 19 penetrates downward through the boss 15 (see fig. 4 for assistance).

As shown in fig. 2, 6 and 9, the two bumps 17 are located at two opposite ends of the protruding portion 16, and the two bumps 17 are respectively connected to the two end portions 112 corresponding to the side walls 11, that is, the two bumps 17 are arranged corresponding to the two end portions 112 in the Y direction, and the top surfaces of the two bumps 17 are flush with the top surfaces of the corresponding side walls 11.

As shown in fig. 2, 6 and 9, a receiving groove 171 is formed by recessing downward from the top surface of one of the bumps 17, the receiving groove 171 is communicated with the corresponding embedded groove 113, the receiving groove 171 extends downward to the boss 15 and is communicated with the first groove 151, the bottom surface of the receiving groove 171 is flush with the bottom surface of the first groove 151, and the receiving groove 171 penetrates forward in the X direction through the front end surface of the corresponding bump 17. A receiving groove 172 is formed by downwardly recessing the top surface of the other protrusion 17, the receiving groove 172 is communicated with the corresponding embedding groove 113, the receiving groove 172 extends downwardly to the boss 15 and is communicated with the second groove 152, the bottom surface of the receiving groove 172 is flush with the bottom surface of the second groove 152, and the receiving groove 172 penetrates through the rear end surface of the corresponding protrusion 17 backwards in the X direction.

As shown in fig. 1, 2 and 7, a plurality of terminals 2 are correspondingly accommodated in the plurality of terminal holes 111 and protrude into the insertion slot 13 to be butted with the butting component 200, and the plurality of terminals 2 are welded to the electronic component 300.

As shown in fig. 1, 2 and 3, the metal fitting 3 includes two main body portions 31 and a connecting portion 32 connecting the two main body portions 31.

As shown in fig. 1, 5 and 6, each main body 31 is correspondingly fixed to one of the side walls 11 and covers the corresponding side wall 11, the top of the main body 31 covers the top surface of the side wall 11, the bottom of the main body 31 is received in the first groove 151, the front end of the main body 31 is received in the first recess 161 and is in interference fit with the inner wall of the first recess 161, the rear end of the main body 31 is received in the receiving groove 171 and is in interference fit with the inner wall of the receiving groove 171, the rear end of the main body 31 is fixedly fitted with one of the end portions 112 corresponding to the side walls 11, and the boss 15, the protrusion 16 and the protrusion 17 respectively cover a portion of the main body 31. In other embodiments, when the body 1 is provided with the boss 15, the protrusion 16 and the two protrusions 17 only on one of the side walls 11, the metal member 3 has only one main body 31.

As shown in fig. 4, 5 and 7, a fastening portion 33 is formed by extending downward from the bottom of the main body portion 31 and bending inward, a front end surface of the fastening portion 33 is flush with a front end surface of the main body portion 31, and the fastening portion 33 is received in the receiving groove 18 and fastened to the bottom of the corresponding sidewall 11.

As shown in fig. 4, 5 and 8, a mounting leg 34 is formed by bending inward from the rear end of the main body 31 and extending downward, the mounting leg 34 is received in one of the insertion grooves 113 corresponding to the side walls 11 and extends downward beyond one of the end portions 112 corresponding to the side walls 11, and the mounting leg 34 is welded to the electronic component 300.

As shown in fig. 4, 5 and 8, the connecting portion 32 connects the two main body portions 31 in the Y direction and covers one of the end walls 12. In other embodiments, the metal piece 3 may not be provided with the connecting portion 32, i.e., the two main body portions 31 are separate two-piece structures.

As shown in fig. 1, 2 and 3, the reinforcing member 4 is made of a metal material and is disposed apart from the metal member 3 in the X direction, and in the present embodiment, the reinforcing member 4 and the metal member 3 are of a separate two-piece structure. The reinforcing member 4 includes two base bodies 41, and a coupling portion 42 and a cross member 43 that connect the two base bodies 41. In other embodiments, when the body 1 is provided with the boss 15, the protrusion 16 and the two projections 17 only on one of the side walls 11, the reinforcement 4 has only one of the bases 41.

As shown in fig. 1, 5 and 6, each of the base bodies 41 is correspondingly fixed to one of the side walls 11 and covers the corresponding side wall 11, the top of the base body 41 covers the top surface of the side wall 11, the bottom of the base body 41 is accommodated in the second groove 152, the rear end of the base body 41 is accommodated in the second recess 162 and is in interference fit with the inner wall of the second recess 162, the front end of the base body 41 is accommodated in the receiving groove 172 and is in interference fit with the inner wall of the receiving groove 172, the front end of the base body 41 is fixedly fitted with the other end 112 corresponding to the side wall 11, and the boss 15, the protrusion 16 and the protrusion 17 respectively cover a portion of the base body 41.

As shown in fig. 4 and 5, a holding portion 44 is formed by extending downward from the bottom of the base 41 and bending inward, the holding portion 44 and the fastening portion 33 have the same structure, the rear end surface of the holding portion 44 is flush with the rear end surface of the base 41, and the holding portion 44 is received in the receiving groove 19 and held at the bottom of the corresponding sidewall 11.

As shown in fig. 4 and 5, a fixing leg 45 is formed by bending inward from the front end of the base 41 and extending downward, the fixing leg 45 has the same structure as the mounting leg 34, the fixing leg 45 is received in the other insertion groove 113 corresponding to the sidewall 11 and extends downward beyond the other end 112 corresponding to the sidewall 11, and the fixing leg 45 is welded to the electronic component 300.

As shown in fig. 4 and 5, the coupling portion 42 connects the two bases 41 in the Y direction and covers the other end wall 12, and the cross member 43 connects the two bases 41 in the Y direction and covers the key 14. In other embodiments, the metal part 3 may not be provided with the coupling portion 42 and the cross member 43, i.e., the two substrates 41 may be of a separate two-piece structure.

In other embodiments, the electrical connector 100 may have only one of the metal member 3 and the reinforcing member 4.

As shown in fig. 11 to 14, an electrical connector 100 according to a second embodiment of the present invention is provided, in which the same reference numerals are used in the drawings as those in the first embodiment, and the description of the present embodiment is not repeated, and the electrical connector 100 according to the second embodiment is different from the electrical connector 100 according to the first embodiment mainly in that:

in this embodiment, the first recess 161 penetrates through two opposite end surfaces of the convex portion 16 in the X direction, and the first recess 161 is located between the first groove 151 and the second groove 152 and is respectively communicated with the first groove 151 and the second groove 152, that is, the body 1 is not provided with a second recess corresponding to each of the side walls 11. The electrical connector 100 further includes two connecting members 7, each connecting member 7 is located between the main body portion 31 and the base body 41 and connects the main body portion 31 and the base body 41, the connecting member 7 covers the corresponding side wall 11, the connecting member 7 is accommodated in the second groove 152 and the first recess 161, and the boss 15 and the protrusion 16 cover a part of the connecting member 7 respectively. In other embodiments, when the metal part 3 has only one main body 31 and the reinforcing part 4 has only one base 41, the connecting part 7 has only one main body 31 and connects the corresponding base 41 to the corresponding main body 31.

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

(1) the first recess 161 is far away from the two end portions 112 corresponding to the side walls 11, that is, the first recess 161 and the two end portions 112 corresponding to the side walls 11 are arranged in the X direction at intervals, so that the first recess 161 is ensured to be arranged at a position where the body 1 is slightly warped, and the metal piece 3 is conveniently accommodated in the first recess 161. The first recess 161 can guide the metal piece 3 to be accommodated in the first groove 151, so that the convex portion 16 and the convex portion 15 respectively cover a portion of the metal piece 3 to improve the strength of the body 1.

(2) The front end of the metal member 3 is fixedly engaged with the first recess 161, and the rear end of the metal member 3 is fixedly engaged with the receiving groove 171, so as to reliably fix the metal member 3 to the body 1.

(3) The second recess 162 is far away from the two end portions 112 corresponding to the side walls 11, that is, the second recess 162 and the two end portions 112 corresponding to the side walls 11 are spaced in the X direction, so that the second recess 162 is ensured to be located at a position where the warpage degree of the body 1 is small, and the reinforcement 4 is conveniently accommodated in the second recess 162. The second recess 162 can guide the reinforcing member 4 to be accommodated in the second groove 152, so that the convex portion 16 and the convex portion 15 respectively cover a portion of the reinforcing member 4, and the reinforcing member 4 and the metal member 3 are arranged in a matching manner, which can further improve the strength of the body 1.

(4) The rear end of the reinforcing member 4 is fixedly engaged with the second recess 162, and the front end of the reinforcing member 4 is fixedly engaged with the receiving groove 172, so that the reinforcing member 4 is securely fixed to the body 1.

(5) The connecting piece 7 connects the metal piece 3 and the reinforcing piece 4 and is arranged on the boss 15 and the convex part 16, so that the strength of the body 1 can be improved to the maximum extent. The first recess 161 receives the metal piece 3 and the connecting member 7 at the same time, so that the first recess 161 can guide the metal piece 3 to be received in the first groove 151, and the first recess 161 can also guide the reinforcing member 4 and the connecting member 7 to be received in the second groove 152 at the same time, which can reduce the assembly difficulty of the electrical connector 100 to the greatest extent.

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, comprising:

the body is provided with a slot and two side walls positioned at two opposite sides of the slot, the two side walls extend along a longitudinal direction, each side wall is provided with two end parts positioned at two longitudinal ends of the side wall, the body further comprises a boss formed by outwards protruding one side wall, a convex part formed by upwards protruding the boss, a first groove formed by downwards concave arranging the top surface of the boss and a first recess formed by concavely arranging the convex part, at least part of the first groove does not penetrate through the boss downwards, and the first recess is arranged far away from the two end parts corresponding to the side walls;

the terminals are arranged on the body and protrude into the slots;

the metal piece is arranged on the body and contained in the first groove and the first recess, and the boss and the convex part respectively cover a part of the metal piece.

2. The electrical connector of claim 1, wherein: the first recess penetrates through one end face of the convex portion, and one end of the metal piece is contained in the first recess.

3. The electrical connector of claim 2, wherein: and a lug is formed by upwards extending the boss, and the other end of the metal piece is fixedly matched with the lug.

4. The electrical connector of claim 3, wherein: and a receiving groove is formed by downwards recessing the top surface of the convex block, the receiving groove extends downwards to the boss and is communicated with the first groove, and the metal piece is contained in the receiving groove and is fixedly matched with the receiving groove.

5. The electrical connector of claim 1, wherein: the first recess is formed by downwards concave arranging the top surface of the convex part, and the first recess extends downwards to the boss and is communicated with the first groove.

6. The electrical connector of claim 5, wherein: the bottom surface of the first groove is flush with the bottom surface of the first recess.

7. The electrical connector of claim 1, wherein: and the first recess is further recessed downwards to form a holding tank, the holding tank penetrates through the boss downwards, and the metal piece is provided with a buckling part which is contained in the holding tank and buckled at the bottom of the body.

8. The electrical connector of claim 1, wherein: a reinforcement is located the body and with the metalwork separates the setting, the body still includes certainly the boss upwards extends two lugs that form respectively, two lugs are located the relative both ends of convex part, the metalwork with one of them the lug is fixed to be cooperated, just the reinforcement with another the lug is fixed to be cooperated.

9. The electrical connector of claim 8, wherein: the two bumps are respectively connected with the two ends corresponding to the side walls.

10. The electrical connector of claim 8, wherein: the body still includes from the boss is concave establishes a second recess that forms and from the convex part is concave establishes a second that forms and is sunken, the second recess with first recess separates the setting, the second sunken with first sunken separating the setting, just the second is sunken to be kept away from correspondingly the lateral wall the two tip sets up, the reinforcement accept in the second recess with the second is sunken, just the boss with the convex part covers respectively a part of reinforcement.

11. The electrical connector of claim 10, wherein: the second recess penetrates through the other end face of the convex portion, and one end of the reinforcing piece is contained in the second recess.

12. The electrical connector of claim 10, wherein: the second is sunken certainly the top surface of convex part is sunken to establish downwards and is formed, the second is sunken extend downwards the boss and with the second recess is linked together.

13. The electrical connector of claim 12, wherein: the second groove is formed by downwards concave arrangement of the top surface of the boss, and the bottom surface of the second groove is flush with the bottom surface of the second recess.

14. The electrical connector of claim 10, wherein: and an accommodating groove is further formed by downwards recessing the second recess, the accommodating groove downwards penetrates through the boss, and the reinforcing piece is provided with a fixing part which is accommodated in the accommodating groove and is fixed at the bottom of the body.

15. The electrical connector of claim 10, wherein: the body is provided with a key buckle, the key buckle is connected with the two side walls along a transverse direction, the transverse direction is perpendicular to the longitudinal direction, and the second recess is arranged corresponding to the key buckle in the transverse direction.

16. The electrical connector of claim 8, wherein: a connecting piece is located between the metal piece and the reinforcing piece and is connected the metal piece and the reinforcing piece, the first sunken part is from the top surface of convex part is established and is run through downwards the two relative terminal surfaces of convex part, the connecting piece accept in the first sunken part, just the convex part covers at least partly of connecting piece.

17. The electrical connector of claim 16, wherein: the body still includes certainly the boss is concave establishes a second recess that forms, first sunken being located between the first recess with the second recess and respectively with the first recess with the second recess is linked together, the connecting piece with the reinforcement accept in the second recess, just the boss covers respectively the connecting piece with a part of reinforcement.

18. The electrical connector of claim 1, wherein: from one of them the top surface of tip is sunken to establish downwards and is formed an embedded groove, the embedded groove runs through the correspondence downwards the tip, the metalwork has a main part and from the one end of main part inwards buckles the installation foot that downwardly extending formed again, the main part correspond accept in first recess with first sunken, just the installation foot correspond accept in embedded groove and downwardly extending surpass the correspondence the tip.

19. The electrical connector of claim 1, wherein: in the longitudinal direction, the length of the boss is equal to the length of the side wall corresponding to the boss.

20. The electrical connector of claim 1, wherein: in the longitudinal direction, the length of the top of the convex part is smaller than the length of the joint of the convex part and the boss.

21. The electrical connector of claim 1, wherein: the top surface of the convex part is flush with the top surface of the corresponding side wall.