CN109390805B - Electric connector - Google Patents

Abstract

The invention provides an electric connector, which is provided with an insulating body, conductive terminals, a cable, a front cover and a rear cover, wherein the insulating body is provided with a main body part, a mounting part, a containing groove and a locking mechanism locked with a butt connector, the conductive terminals are assembled from back to front and contained in the corresponding containing grooves, each conductive terminal is provided with a contact part and a wiring part positioned at the rear side of the contact part, the cable is inserted into the containing groove and connected with the conductive terminals in the containing groove, the front cover is assembled from front to back on the front side of the insulating body and locks the conductive terminals in the containing groove, the rear cover is assembled from back to front on the mounting part, the electric connector is further provided with an elastic clamping piece sleeved on the periphery of an insulating skin of the cable, the clamping piece is assembled from back to front on the mounting space of the mounting part and covered by the rear cover, and is extruded by the inner wall surface of the mounting part and then pressed outside the insulating skin, so that interference current is prevented from flowing from the mounting space to front. The electric connector has higher safety performance.

Description

Electric connector

Technical Field

The present invention relates to an electrical connector, and more particularly, to an electrical connector with high safety performance.

Background

When the traditional electric connector is matched with the butt connector in a locking way by utilizing the locking device, the upper surface of the traditional electric connector needs to reserve a yielding space for the locking mechanism of the butt connector, when the electric connector is applied to a vibration environment, a limiting piece is generally required to strengthen the retention force between the conductive terminal and the insulating body, but before the electric connector is used in a high-voltage environment, a strict high-voltage static test is also required to be carried out simultaneously so as to prevent the electric connector from being short-circuited or damaged by electronic elements in the high-voltage environment, and the traditional electric connector is easy to flow into the conductive terminal in front from the gap at the rear side of the insulating body due to the rear end connecting cable, so that the short circuit occurs.

In view of the above, there is a need for an improvement over existing electrical connectors to address the above-described problems.

Disclosure of Invention

The invention aims to provide an electric connector with higher safety performance.

In order to achieve the above object, the present invention provides an electrical connector, which comprises an insulating body, a plurality of conductive terminals, a cable, a front cover and a rear cover, wherein the insulating body is provided with a main body part positioned at the front side of the insulating body, a mounting part positioned at the rear side of the insulating body, a plurality of accommodating grooves penetrating the conductive terminals along the butting direction and a locking mechanism positioned at the upper side of the insulating body to be locked with the butting connector, the conductive terminals are assembled from back to front and accommodated in the corresponding accommodating grooves, the electrical connector comprises at least one row of conductive terminals arranged along the transverse direction, each conductive terminal is provided with a contact part contacted with the butting terminal and a wiring part positioned at the rear side of the contact part, the cable is inserted into the accommodating grooves and is mechanically and electrically connected with the corresponding conductive terminals in the accommodating grooves, the front cover is assembled from front to back in the front side of the insulating body and locked in the corresponding accommodating grooves, the rear cover is assembled from back to front in the mounting part, the electrical connector is further provided with an elastic clamping piece sleeved on the periphery of the insulating skin of the cable, the clamping piece is assembled from back to front, the clamping piece is assembled from the front and is pressed into the mounting space from the front to the mounting space, and the insulating body is pressed against the front surface and is pressed against the inner wall.

As a further improvement of the invention, the clamping piece is provided with a plurality of through holes penetrating the clamping piece along the abutting direction and a plurality of concave holes which are uniformly distributed on the front surface and the rear surface of the clamping piece and are not penetrated.

As a further development of the invention, after the clamping element has been inserted into the installation space, the conductive terminal is connected to the cable and is inserted from the rear forward through the through-hole until the conductive terminal snaps into the insulating body.

As a further improvement of the invention, the insulating body is also provided with a frame body part which is formed on the periphery of the main body part in a protruding mode, the frame body part is positioned at the rear end of the main body part, a plurality of protruding strips are formed on the top wall of the main body part in a protruding mode, and the protruding height of the frame body part in the upward direction is larger than that of the protruding strips in the upward direction.

As a further improvement of the present invention, the main body portion has oppositely disposed top and bottom walls extending forward beyond the front end face of the conductive terminal to form a front end wall protruding from the front side of the conductive terminal, and a pair of side walls connecting the top and bottom walls, the top and bottom walls completely covering the conductive terminal therebetween so as not to be exposed outward in the height direction, the front cover being covered inside the front end wall.

As a further improvement of the invention, the front cover is provided with a base body and a pair of buckling arms which are oppositely arranged at two sides of the base body, the base body is provided with through grooves which are arranged in one-to-one correspondence with the containing grooves and are used for inserting the butting element, and the buckling arms are respectively arranged at two sides of the base body in the transverse direction and buckled with buckling parts formed on corresponding side walls.

As a further improvement of the present invention, each of the fastening arms is provided with a pair of connecting portions connected to the base body and disposed at intervals, and a distal end portion connecting distal ends of the connecting portions, the distal end portion being provided with a fastening groove formed to be recessed outward from an inner wall surface thereof so as to be fastened with the corresponding fastening portion.

As a further improvement of the invention, each buckle arm is also provided with a pair of convex ribs which extend outwards from the corresponding connecting part along the height direction, the convex ribs extend into the limit grooves of the corresponding side walls, and the outer surfaces of the convex ribs are gradually close to the inner surfaces of the convex ribs in the front-to-back direction.

As a further improvement of the present invention, the rear cover has a mounting groove penetrating it in the front-rear direction, the mounting groove has a guide groove located at one side thereof in the lateral direction, and the conductive terminal enters the guide groove in a predetermined direction after the rear cover is assembled from rear to front to the rear side of the insulative body, and is then fitted from rear to front and passed through the corresponding mounting groove to be inserted into the clip.

As a further improvement of the present invention, the insulating body further has a pair of guard portions protruding on a top wall thereof, the latch mechanism is interposed between the pair of guard portions, and a top surface of the guard portion is higher than a top surface of a pressing portion of the latch mechanism in a height direction.

The invention has the beneficial effects that: according to the electric connector disclosed by the invention, the elastic clamping piece is arranged on the periphery of the insulating sheath of the cable, and is assembled into the installation space of the insulating body from back to front and covered by the back cover, and meanwhile, the clamping piece is extruded by the inner wall surface of the installation part to be pressed outside the insulating sheath, so that interference current is prevented from flowing forward from the installation space, short circuit and element damage caused by static spark to the conductive terminal are prevented, and the electric connector further has higher safety performance.

Drawings

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

Fig. 2 is another view of the electrical connector of fig. 1.

Fig. 3 is a partially exploded view of the electrical connector shown in fig. 1.

Fig. 4 is an exploded perspective view of the electrical connector of fig. 2.

Fig. 5 is a partially assembled view of the electrical connector of fig. 4 with the conductive terminals and cables removed.

Fig. 6 is an exploded perspective view of the electrical connector of fig. 5.

Fig. 7 is a side view of the front cover of the electrical connector of fig. 3.

Fig. 8 is a perspective view of the clamping member of the electrical connector of fig. 3.

Fig. 9 is a stepped cross-sectional view taken along line A-A of fig. 8.

Fig. 10 is a schematic view of the conductive terminals of the electrical connector of fig. 1.

Fig. 11 is a front view of the electrical connector of fig. 1.

Fig. 12 is a side view of the electrical connector of fig. 1 without the conductive terminals and cables assembled.

Fig. 13 is a schematic cross-sectional view of the electrical connector of fig. 1 taken along line B-B.

Fig. 14 is a schematic cross-sectional view taken along line C-C of fig. 1.

Fig. 15 is a schematic view of the electrical connector of fig. 1 mated with a mating connector.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiment is not intended to limit the present invention, and structural, methodological, or functional modifications of the invention according to the embodiment are included in the scope of the invention.

Referring to fig. 1 to 15, a preferred embodiment of an electrical connector 100 according to the present invention is shown, wherein the electrical connector 100 includes an insulation body 1, a plurality of conductive terminals 2, a cable 3, a front cover 4, a rear cover 5, and an elastic clamping member 6 sleeved on the periphery of an insulation sheath 31 of the cable 3. For convenience of description, the following description will be given with the mating end of the electrical connector 100 being regarded as the front end and the terminal being regarded as the rear end, that is, the front-rear direction is the mating direction of the electrical connector 100 and the mating connector 200, and at the same time, one direction perpendicular to the front-rear direction is defined as the lateral direction, and the other direction perpendicular to the front-rear direction is defined as the height direction, in this embodiment, the dimension of the insulating body 1 in the lateral direction is greater than the dimension thereof in the height direction and the front-rear direction.

Referring to fig. 1 to 6 in combination with fig. 11 to 14, in the present invention, the insulating body 1 has a main body 11 at a front side thereof, a mounting portion 12 at a rear side thereof, a plurality of receiving grooves 13 penetrating the insulating body in a mating direction, and a locking mechanism 14 at an upper side thereof to lock with a mating connector. In this embodiment, the insulating body 1 has a row of the receiving grooves 13, and the receiving grooves 13 are arranged in the lateral direction.

The main body 11 includes a top wall 111, a bottom wall 112, and a pair of side walls 113 connecting the top wall 111 and the bottom wall 112, the top wall 111 and the bottom wall 112 are disposed opposite to each other along a height direction, the top wall 111 and the bottom wall 112 extend forward beyond a front end surface 210 of the conductive terminal 2 to form a front end wall 114 protruding from a front side of the conductive terminal 2, the top wall 111 and the bottom wall 112 completely cover the conductive terminal 2 therebetween so as not to be exposed outward along the height direction, and simultaneously, the front end wall 114 shields the front cover 4 on the front side of the conductive terminal 2, and at the same time, a creepage distance of static electricity around the conductive terminal 2 can be increased, and influence of interference current is reduced. Thus, no opening structure is provided on the top wall 111 and the bottom wall 112 of the main body 11 to prevent flashover.

The top wall 111 has a plurality of protrusions 1112 protruding upward on its upper side, and a coupling groove 1113 recessed upward on its lower side, and in this embodiment, the coupling groove 1113 is aligned with the latch mechanism 14 in the lateral direction.

The main body 11 further has a plurality of elastic walls 115 corresponding to the receiving grooves 13 one to one, the elastic walls 115 are located in the corresponding receiving grooves 13, in this embodiment, the elastic walls 115 extend in the front-back direction and cover the lower sides of the corresponding receiving grooves 13, the elastic walls 115 have a stop portion 1151 protruding toward the inside of the receiving grooves 13 and a tongue portion 1152 protruding forward to the front side of the corresponding stop portion 1151, and the front ends of the tongue portions 1152 are free ends of the elastic walls 115. In other embodiments of the present invention, the elastic wall 115 may be disposed on the upper side of the corresponding receiving groove 13.

The pair of side walls 113 are disposed on two sides of the insulating body 1 in the lateral direction, each side wall 113 is formed with a limiting groove 1131 recessed inwards from the outer surface thereof, a fastening portion 1132 disposed in the limiting groove 1131, and an operating region 1133 disposed at the rear side of the limiting groove 1131, and the operating region 1133 is also recessed inwards from the outer surface of the corresponding side wall 113 and is communicated with the limiting groove 1131. Further, the limiting groove 1131 and the operating region 1133 are both opened outwards along the lateral direction.

Meanwhile, each of the side walls 113 further has a pair of positioning grooves 1134 communicating with the positioning groove 1131 provided thereon, and the positioning grooves 1134 are disposed on both sides of the positioning groove 1131 in the height direction. Each side wall 113 further has a blocking wall 1135 located inside the positioning groove 1134, the limiting groove 1131 and the operating region 1133 do not penetrate the blocking wall 1135 inwards, and the positioning groove 1134 and the limiting groove 1131 are recessed inwards to the outer surface of the corresponding blocking wall 1135.

In this embodiment, each of the side walls 113 has a pair of limiting walls 1136 disposed opposite to each other in the height direction, and the pair of limiting walls 1136 are located outside the positioning groove 1134 and form the limiting groove 1131 at intervals.

The mounting portion 12 is hollow and has a mounting space 120 that is opened backward, and a plurality of positioning protrusions 121 are disposed on an outer surface of the mounting portion 12, and in this embodiment, the positioning protrusions 121 are disposed on top and bottom surfaces of the mounting portion 12 that are exposed outward. In addition, the mounting portion 12 further has a protruding strip 122 protruding on the top surface thereof, and in this embodiment, the protruding strip 122 is described as a pair, but the number thereof is not limited thereto. Each of the protruding strips 122 extends in the front-rear direction, and in the transverse direction, a pair of protruding strips 122 are spaced apart and located between a pair of positioning protrusions 121.

The insulating body 1 further has a frame portion 15 protruding from the outer periphery of the main body portion 11, the frame portion 15 is located at the rear end of the main body portion 11, and the height of the protruding upward of the frame portion 15 is greater than the height of the protruding upward of the protrusions 1112, so as to increase the flashover distance.

Further, as shown in fig. 11 to 13, the frame portion 15 extends outward beyond the outer peripheral surface of the main body portion 11 in both the height direction and the lateral direction, that is, the projection of the main body portion 11 on the vertical plane falls entirely inside the projection of the frame portion 15 on the vertical plane. In addition, the frame portion 15 extends outward beyond the outer peripheral surface of the mounting portion 12 in the height direction and the lateral direction, that is, the projection of the mounting portion 12 on the vertical plane falls entirely inside the projection of the frame portion 15 on the vertical plane.

In addition, the insulating body 1 further has a pair of protection parts 16 protruding on the top wall thereof, the latch mechanism 14 is sandwiched between the pair of protection parts 16 in the lateral direction, and the top surface of the protection part 16 is higher than the top surface of the pressing part 141 of the latch mechanism 14 in the height direction, so as to effectively protect the pressing part 141 and prevent the pressing part 141 from being improperly pressed by an external force.

In this embodiment, the guard portion 16 is disposed on the mounting portion 12 and is connected to the rear end surface of the frame portion 15. Further, the guard portion 16 has a chevron shape when viewed from the rear to the front, and has a flat section 161 on the upper side thereof and a pair of inclined sections 162 extending from the bottom end of the flat section 161, wherein the pair of inclined sections 162 extend in opposite directions and are symmetrically disposed. In the lateral direction, the ridge 122 is located directly below the straight section 161.

Referring to fig. 3 to 4 in combination with fig. 10 and 13, the conductive terminals 2 are assembled from back to front and are received in the corresponding receiving grooves 13, and include at least one row arranged along a lateral direction, and each conductive terminal 2 has a contact portion 21 contacting with a mating terminal (not shown) and a connection portion 22 located at a rear side of the contact portion 21 to be connected with the cable 3.

In this embodiment, the contact portion 21 is integrally formed with a frame structure, and a blocking surface 23 is formed on one side of the contact portion in the height direction and is matched with the insulating body 1, further, in this embodiment, a slot 211 that is opened downward is formed on the lower side of the contact portion 21, and the blocking surface 23 is a front wall surface of the slot 211. The lower side of the contact portion 21 is formed with a protruding sheet-like guide portion 212, the guide portion 212 is disposed vertically and extends in the front-rear direction, and the guide portion 212 and the blocking surface 23 together define two wall surfaces adjacent to the slot 211. When the conductive terminals 2 are inserted into the corresponding receiving grooves 13, the stop portions 1151 of the insulating body 1 are pressed forward against the blocking surfaces 23 of the conductive terminals 2 to prevent the conductive terminals from being retracted.

Referring to fig. 1 to 7 in combination with fig. 12 to 14, the front cover 4 has a base 41 and a pair of fastening arms 42 disposed opposite to two sides of the base 41, the base 41 has through slots 411 disposed in one-to-one correspondence with the receiving slots 13 for inserting a docking element (not shown), and the fastening arms 42 are disposed on two sides of the base 41 in the lateral direction and are fastened with fastening portions 1132 formed on the corresponding side walls 113.

Each of the fastening arms 42 is provided with a pair of connecting portions 421 connected to the base 41 and spaced apart from each other, and a distal portion 422 connecting the distal ends of the connecting portions 421, and the distal portion 422 is provided with a fastening groove 4221 formed by being recessed from an inner wall surface thereof to be fastened with the corresponding fastening portion 1132.

Each of the latch arms 42 further has a pair of ribs 423 extending outward from the corresponding connecting portion 421 in the height direction, and the ribs 423 extend into the limiting grooves 1131 of the corresponding side walls 113 to prevent the latch arms 42 from being excessively stretched out under an improper external force. As shown in fig. 7, the outer surface 4231 of the rib 423 is gradually closed toward the inner surface 4232 thereof in the front-to-rear direction, so that the rear section of the latch arm 42 can be outwardly opened by a certain angle, and in this embodiment, the inner surface 4232 is a vertical surface parallel to the front-to-rear direction.

The upper surface of the front cover 4 is protruded to form a coupling portion 43, in this embodiment, the coupling portion 43 is located at a middle portion of the front cover 4 in a lateral direction, and when the front cover 4 is assembled to the front side of the insulating body 1, the coupling portion 43 is received and positioned in the coupling groove 1113.

The front cover 4 further has a plurality of protruding portions 44 protruding from the front side of the base 41, and the protruding portions 44 are divided into two rows arranged side by side in the height direction, and the protruding portions 44 in each row are arranged in the lateral direction and at intervals. Further, the protruding portions 44 are disposed in one-to-one correspondence with the through slots 411.

When the front cover 4 is assembled on the front side of the insulating body 1, the protruding portion 44 extends into the corresponding accommodating groove 13, the fastening groove 4221 is fastened with the fastening portion 1132 on the outer side of the insulating body 1, and the protruding portion 44 presses the corresponding tongue 1152 on the lower side, so that the corresponding stopper 1151 moves towards the inside of the accommodating groove 13 and increases the contact depth with the blocking surface 23, in this embodiment, the tongue 1152 moves upwards under the extrusion action of the protruding portion 44, so that the stopper 1151 moves upwards, and further the blocking surface 23 is prevented from sliding out from the top end of the stopper 1151, so that the lock catch between the two is deeper and the release is avoided.

When the front cover 4 needs to be unlocked, only the operation area 1133 needs to apply force to the end portion 422 to slightly expand the latch arms 422 outwards, so that the latch portion 1132 slides out of the latch groove 4221.

Referring to fig. 1 to 6 in combination with fig. 12 to 14, the rear cover 5 has a mounting groove 51 penetrating the rear cover in the front-rear direction and a receiving cavity 50 opened forward, the mounting groove 51 has a guide groove 511 located at one side thereof in the lateral direction, the guide groove 511 is located at one side of the mounting groove 51 in the lateral direction, and the dimension thereof in the height direction is larger than the dimension of the side portion thereof, so that the conductive terminal 1 has a certain directivity when being mounted in the rear cover 5. When assembled, the rear cover 5 is assembled from the rear to the front to the mounting portion 12 at the rear side of the insulating body 1, and the conductive terminal 2 is inserted into the guide groove 511 in a predetermined direction, so that the guide portion 212 is inserted into the guide groove 511 and slid forward along the guide groove 511, and the conductive terminal 2 is integrally assembled from the rear to the front and passed through the corresponding mounting groove 51 to be further inserted forward and passed through the through hole 61 of the clamping member 6.

The top of the rear cover 5 is provided with a notch 52 at the middle part thereof and a receiving part 53 protruding thereon, the receiving part 53 is disposed at two sides of the notch 52 in the transverse direction, and the receiving part 53 has a receiving space 530 opened forward and downward to receive the protruding strip 122 disposed at the top of the insulating body 1 therein.

In addition, the top wall and the bottom wall of the rear cover 5 are respectively provided with a pair of locking grooves 54 communicated with the accommodating cavity 50, and the locking grooves 54 are positioned outside the accommodating portion 53 in the lateral direction, that is, the accommodating portion 53 is disposed closer to the notch 52 than the locking grooves 54.

Referring to fig. 3 to 4, 6, 8 to 9 and 13 to 14, the clamping member 6 has a plurality of through holes 61 penetrating the clamping member in the abutting direction and a plurality of concave holes 62 uniformly distributed on the front and rear surfaces thereof and not penetrating the clamping member. The through holes 61 have at least one row arranged in the lateral direction corresponding to the conductive terminals 2.

In this embodiment, taking the case that the clamping member 6 has two rows of through holes 61 as an example, a plurality of through holes 61 in each row are arranged in a transverse direction and are arranged at intervals, two rows of through holes 61 are arranged at intervals in a height direction, the clamping member 6 has three rows of concave holes 62 arranged at intervals in the height direction, the concave holes 62 in each row are arranged at intervals in the transverse direction, and a row of through holes 61 is sandwiched between every two adjacent rows of concave holes 62.

The rear cover 5 further has at least one positioning post 55 protruding forward into the receiving cavity 50 thereof, and the positioning post 55 is inserted forward into a corresponding recess 62 (as shown in fig. 14) provided on the rear surface of the clamping member 6, so as to achieve relative positioning between the clamping member 6 and the rear cover 5. In the transverse direction, the positioning posts 55 are located outside the mounting groove 51, and in this embodiment, the positioning posts 55 have a pair, which are disposed on both sides of the mounting groove 51 in the transverse direction.

Further, at least one ring of ribs 63 is formed on the outer peripheral surface of the clamping member 6 in a protruding manner, and in this embodiment, the clamping member 6 has a plurality of ribs 63 arranged at intervals in the front-rear direction. In a preferred embodiment of the invention, the clamping member 6 is made of a rubber material to have good elastic deformability.

The clamping member 6 further has a plurality of inner protrusions 64 protruding in opposite directions corresponding to the ribs 63, the inner protrusions 64 are located in the inner protrusions 64 protruding toward the inside of the through holes 61, and at least one turn of the inner protrusions 64 is disposed in each through hole 61.

During assembly, the clamping member 6 is assembled into the mounting space 120 of the mounting portion 12 from back to front, the rear cover 5 is assembled to the mounting portion 12 from back to front, the rear cover 5 covers the clamping member 6 at the rear of the clamping member 6, the protruding strip 122 is inserted into and positioned in the corresponding accommodating portion 53, and the positioning protrusion 121 is snapped and positioned in the clamping groove 54.

The cable 3 is inserted into the accommodating groove 13 and is mechanically and electrically connected with the corresponding conductive terminal 2 in the accommodating groove 13, and the clamping member 6 is pressed by the inner wall surface of the mounting portion 12 and is further pressed outside the insulating cover 31, so that a good sealing effect is formed on the rear side of the insulating body 1, and interference current is prevented from flowing forward from the mounting space 120, so that high-voltage electrostatic flashover is prevented from reaching the conductive terminal 2 located on the front side.

The front cover 4 is assembled on the front side of the insulating body 1 from front to back and locks the conductive terminals 2 in the corresponding receiving grooves 13, and the front cover 4 is covered on the inner side of the front end wall 114 in the height direction and the front-back direction.

When the clamping member 6 is installed in the installation space 120, the conductive terminal 2 is connected with the cable 3 and inserted from the rear to the front and passes through the through hole 61 until the conductive terminal 2 is locked in the insulating body 1. Because the clamping piece 6 is provided with a plurality of concave holes 62 which are not communicated, the clamping piece 6 also has stronger elastic deformation capacity on the premise of keeping the integral structural strength of the clamping piece, thereby being beneficial to the insertion of the conductive terminal 2.

According to the electric connector 100 disclosed by the invention, the elastic clamping piece 6 is arranged on the periphery of the insulating cover 31 of the cable 3, the clamping piece 6 is assembled into the mounting space 120 of the mounting part 12 from back to front and is covered by the rear cover 5, and meanwhile, the clamping piece is pressed by the inner wall surface of the mounting part 12 and then is pressed outside the insulating cover 31, so that interference current is prevented from flowing forwards from the mounting space 120, and short circuit and element damage caused by static spark to the conductive terminal can be effectively prevented particularly in a high-voltage environment, so that the electric connector has higher safety performance.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides an electric connector, its includes insulator, a plurality of conductive terminal, cable, protecgulum and back lid, insulator has the main part that is located its front side, the installation department that is located its rear side, a plurality of accepting groove that runs through it along the butt joint direction and be located its upside in order to lock catch mechanism with butt joint connector looks, conductive terminal from the backward forward equipment and accept in corresponding accepting groove, and include along at least one row of transverse direction range, every conductive terminal has the contact portion that contacts with butt joint terminal and is located the wiring portion of contact portion rear side, the cable insert in this accepting groove and with corresponding conductive terminal machinery and electric connection, the protecgulum from the backward equipment in insulator front side and with conductive terminal locks in corresponding accepting groove, the back lid from the backward forward equipment in installation department, its characterized in that: the electric connector is further provided with an elastic clamping piece sleeved on the periphery of the insulating skin of the cable, and the clamping piece is assembled into the installation space of the installation part from back to front and covered by the back cover, and meanwhile is extruded by the inner wall surface of the installation part to be pressed outside the insulating skin, so that interference current is prevented from flowing into the installation space forwards.

2. The electrical connector of claim 1, wherein: the clamping piece is provided with a plurality of through holes penetrating the clamping piece along the butt joint direction and a plurality of concave holes which are uniformly distributed on the front surface and the rear surface of the clamping piece and are not penetrated.

3. The electrical connector of claim 2, wherein: when the clamping piece is installed in the installation space, the conductive terminal is connected with the cable and inserted into and passes through the through hole from back to front until the conductive terminal is blocked in the insulating body.

4. The electrical connector of claim 1, wherein: the insulating body is further provided with a frame body part formed on the periphery of the main body part in a protruding mode, the frame body part is located at the rear end of the main body part, a plurality of protruding strips are formed on the top wall of the main body part in a protruding mode, and the protruding height of the frame body part is larger than the protruding height of the protruding strips.

5. The electrical connector of claim 1, wherein: the main body portion has oppositely disposed top and bottom walls extending forwardly beyond a front end face of the conductive terminal to form a front end wall protruding from a front side of the conductive terminal, and a pair of side walls connecting the top and bottom walls, the top and bottom walls completely covering the conductive terminal therebetween so as not to be exposed outwardly in a height direction, the front cover being covered inside the front end wall.

6. The electrical connector of claim 5, wherein: the front cover is provided with a base body and a pair of buckling arms which are oppositely arranged at two sides of the base body, the base body is provided with through grooves which are arranged in one-to-one correspondence with the containing grooves and used for the insertion of the butt joint elements, and the buckling arms are respectively arranged at two sides of the base body in the transverse direction and buckled with buckling parts formed on corresponding side walls.

7. The electrical connector of claim 6, wherein: each buckling arm is provided with a pair of connecting parts connected with the base body and arranged at intervals and a tail end part connected with the tail end of the connecting part, and the tail end part is provided with a buckling groove which is formed by outwards sinking from the inner wall surface of the tail end part so as to be buckled with the corresponding buckling part.

8. The electrical connector of claim 7, wherein: each buckle arm is also provided with a pair of convex ribs which extend outwards from the corresponding connecting part along the height direction, the convex ribs extend into the limit grooves of the corresponding side walls, and in the direction from front to back, the outer surfaces of the convex ribs are gradually closed towards the inner surfaces of the convex ribs.

9. The electrical connector of claim 1, wherein: the rear cover has a mounting groove penetrating therethrough in a front-rear direction, the mounting groove has a guide groove located at one side thereof in a lateral direction, and after the rear cover is assembled from rear to front to a rear side of the insulative body, the conductive terminal enters the guide groove in a predetermined direction, and is then fitted from rear to front and passes through the corresponding mounting groove to be inserted into the clamping member.

10. The electrical connector of claim 1, wherein: the insulating body is also provided with a pair of protection parts protruding from the top wall of the insulating body, the locking mechanism is clamped between the pair of protection parts, and the top surface of the protection part is higher than the top surface of the pressing part of the locking mechanism in the height direction.