CN113314896A

CN113314896A - Electrical connector

Info

Publication number: CN113314896A
Application number: CN202110703874.3A
Authority: CN
Inventors: 洪永炽; 张勇刚; 刘坤; 连雪冰
Original assignee: Alltop Electronics Suzhou Co Ltd; Alltop Technology Co Ltd
Current assignee: Alltop Electronics Suzhou Co Ltd; Alltop Technology Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2021-08-27
Also published as: CN109390805B; CN109390805A

Abstract

The invention provides an electric connector, which comprises 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 and a containing groove, the conductive terminals are assembled from back to front and are contained in the corresponding containing grooves, each conductive terminal is provided with a contact part and a wiring part positioned at the back side of the contact part, the cable is connected with the corresponding conductive terminal in the containing groove, the front cover is assembled at the front side of the insulating body from front to back and locks the conductive terminals in the containing grooves, the rear cover is assembled at the mounting part from back to front, the electric connector is also provided with an elastic clamping part sleeved at the periphery of an insulating skin of the cable, and the clamping part is assembled in a mounting space of the mounting part from back to front and is covered by the rear cover, and is simultaneously extruded by the inner wall surface of the mounting part to be pressed outside the insulating skin so as to avoid the interference current from the mounting space to flow in the front. The electric connector can bear high static voltage and has higher safety performance.

Description

Electrical connector

The application is a divisional application of an invention patent application with application date of 2018, 11 and 30 months and application number of 201811456806.6 and the name of an invention of an electric connector.

Technical Field

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

Background

When the conventional electrical connector is used for locking and mating with the mating connector by using the locking device, the upper surface of the conventional electrical connector needs to reserve an allowance space for a locking mechanism of the mating connector, and when the electrical connector is applied to a vibration environment, such as a new energy automobile, a limiting member is usually required to enhance the retention force between the conductive terminal and the insulating body. And the interior parts of new energy automobile produce static easily when the circular telegram is operated, and interior parts easily receive the interference current influence of static, can cause the spark even part damage when serious. In order to avoid the problem, a grounding component is arranged on a case module of the traditional new energy automobile, so that the electrostatic current generated inside the case can be smoothly dredged, and internal parts are prevented from being damaged. However, in some specific vehicle models, it is difficult to provide a grounding assembly in the chassis module in order to pursue specific requirements (such as modeling requirements), so before the electric connector is used in a high-voltage environment, a strict high-voltage static test is also required to prevent the electric connector from short-circuiting or electronic components from being damaged in the high-voltage environment, while in the conventional electric connector, because a cable is connected at the rear end, interference current easily flows into a front conductive terminal from a gap at the rear side of the insulating body, and then short-circuiting occurs.

In view of the above, there is a need for an improved electrical connector to solve the above problems.

Disclosure of Invention

The invention aims to provide an electric connector which can bear high electrostatic voltage and has higher safety performance.

In order to achieve the above object, the present invention provides an electrical connector, which includes an insulating body, a plurality of conductive terminals, a cable, a front cover and a rear cover, wherein the insulating body has a main body portion located at a front side thereof, an installation portion located at a rear side thereof, and a plurality of receiving slots penetrating the insulating body along a mating direction, the conductive terminals are assembled from the rear to the front and received in the corresponding receiving slots, and include at least one row arranged along a transverse direction, each conductive terminal has a contact portion contacting with a mating terminal and a wire connection portion located at a rear side of the contact portion, the cable is mechanically and electrically connected with the wire connection portion of the corresponding conductive terminal in the receiving slot, the front cover is assembled at the front side of the insulating body from the front to the rear and locks the conductive terminal in the corresponding receiving slot, the rear cover is assembled at the mounting portion from the rear to the front, and the electrical connector further has an elastic clamping member sleeved on an outer periphery of an insulating sheath of the cable, the clamping piece is assembled into the installation space of the installation part from back to front and is covered by the back cover from the back side to front, and meanwhile, the clamping piece is pressed by the inner wall surface of the installation part and is further pressed outside the insulation cover, so that interference current is prevented from flowing into the installation space from front.

As a further improvement of the present invention, the outer peripheral surface of the clamping member is pressed and sealed by the inner wall surface of the mounting portion, the front end surface thereof is pressed against the front side thereof and defines the front surface of the mounting space, and the rear end surface thereof is pressed by the inner wall surface of the rear cover so as to be closed from the rear side of the housing groove.

As a further improvement of the invention, the clamping piece is provided with a plurality of through holes penetrating through the clamping piece along the butt joint direction, and after the clamping piece is installed in the installation space from back to front, the conductive terminal is connected with a cable and inserted into and penetrates through the through holes from back to front until the conductive terminal is preliminarily clamped in the insulating body.

As a further improvement of the invention, the clamping piece is also provided with a plurality of concave holes which are uniformly distributed on the front surface and the rear surface of the clamping piece and do not penetrate through the clamping piece along the front-back direction.

As a further improvement of the invention, the rear cover has at least one positioning post projecting forward into the receiving cavity thereof, the positioning post being inserted forward into a corresponding recess provided on the rear surface of the clamping member.

As a further improvement of the present invention, the main body has a plurality of elastic walls disposed in one-to-one correspondence with the receiving slots, and the elastic walls are disposed in the corresponding receiving slots and stop the conductive terminals by means of a stop portion formed by protruding the elastic walls.

As a further improvement of the present invention, the front cover has a base body and a plurality of protruding portions protruding from the front side of the base body, the protruding portions and the receiving grooves are arranged in a one-to-one correspondence, and when the front cover is assembled to the front side of the insulating body, the protruding portions extend into the corresponding receiving grooves and press against the lower side of the elastic wall and apply upward pressing force thereto, thereby finally locking the corresponding conductive terminals.

As a further improvement of the present invention, one side of the contact portion in the height direction thereof is formed with a blocking surface matched with the insulating body, and after the conductive terminal is inserted into the corresponding accommodating groove, the blocking portion is pressed forward against the blocking surface of the conductive terminal to form a primary and final stop.

As a further improvement of the present invention, the main body portion has a top wall and a bottom wall which are oppositely arranged, and a pair of side walls which connect the top wall and the bottom wall, each of the side walls is formed with a limiting groove which is concavely arranged from the outer surface thereof and a buckling portion which is arranged in the limiting groove, the front cover has a base body and a pair of buckling arms which are oppositely arranged at two sides of the base body, and when the front cover is assembled at the front side of the insulating body, the buckling grooves on the buckling arms are buckled with the buckling portions.

As a further improvement of the present invention, each of the side walls further has a pair of positioning grooves communicated with the positioning grooves formed thereon, the positioning grooves are respectively disposed on both sides of the positioning groove in the height direction, each of the snap arms has a pair of protruding ribs extending outward in the height direction, and the protruding ribs extend into the corresponding positioning grooves of the corresponding side wall.

The invention has the beneficial effects that: the electric connector of the invention arranges the elastic clamping piece at the periphery of the insulating sheath of the cable, the clamping piece is assembled into the installation space of the insulating body from back to front and is covered by the back cover, meanwhile, the inner wall surface of the mounting part is extruded to be pressed outside the insulating sheath, the creepage distance is increased, so as to prevent the interference current from directly flowing forward from the mounting space, prevent short circuit and device damage caused by the static flashover to the conductive terminal, and the cover of the rear cover is used for realizing complete sealing, so that the interference current is prevented from flowing forwards through the gap, thereby having higher safety performance, being suitable for the case module of the new energy automobile without the grounding component, the structure of the whole new energy automobile can be flexibly designed by a manufacturer of the new energy automobile without considering the arrangement of the grounding assembly, so that the applicability of the electric connector is greatly improved.

Drawings

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

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

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 shown in fig. 2.

Fig. 5 is a partial assembly view of the electrical connector of fig. 4 with the conductive terminals and the cable removed.

Fig. 6 is an exploded perspective view of the electrical connector shown in 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 a clamping member in the electrical connector of fig. 3.

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

Fig. 10 is a schematic view of conductive terminals in 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 the cable 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 sectional view taken along line C-C in fig. 1.

Fig. 15 is a schematic view of the electrical connector shown in fig. 1 being plugged with a mating connector.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.

Referring to fig. 1 to 15, an electrical connector 100 according to a preferred embodiment of the present invention is shown, wherein the electrical connector 100 includes an insulating body 1, a plurality of conductive terminals 2, a cable 3, a front cover 4, a rear cover 5, and a resilient clamping member 6 sleeved on the periphery of an insulating sheath 31 of the cable 3. For convenience of description, the following description will be made with the mating end of the electrical connector 100 as a front end and the terminal as a rear end, that is, the front-rear direction is the mating direction of the electrical connector 100 and the mating connector 200, and meanwhile, one direction perpendicular to the front-rear direction is defined as a transverse direction and the other direction perpendicular to the front-rear direction is defined as a height direction, in this embodiment, the dimension of the insulating body 1 in the transverse 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 insulative housing 1 has a main body 11 at a front side thereof, a mounting portion 12 at a rear side thereof, a plurality of receiving slots 13 penetrating therethrough along a mating direction, and a locking mechanism 14 at an upper side thereof for locking with a mating connector. In this embodiment, the insulation body 1 has a row of the receiving slots 13, and the row of the receiving slots 13 is arranged along the transverse 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 oppositely disposed 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 out of 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 in front of the conductive terminal 2, so that a creepage distance of static electricity around the conductive terminal 2 can be increased, and an influence of interference current can be weakened. Thus, no opening structure is provided on the top wall 111 and the bottom wall 112 of the main body 11, so as to prevent the occurrence of the flashover phenomenon.

The top wall 111 has a plurality of protrusions 1112 formed to protrude upward on an upper side thereof and a plurality of coupling grooves 1113 formed to be recessed upward on a lower side thereof, and in this embodiment, the coupling grooves 1113 are aligned with the latch mechanism 14 in a transverse direction.

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

The pair of side walls 113 are respectively disposed on two sides of the insulating body 1 in the transverse direction, each side wall 113 is formed with a limiting groove 1131 recessed inward from an outer surface thereof, a fastening portion 1132 disposed in the limiting groove 1131, and an operating area 1133 located at a rear side of the limiting groove 1131, and the operating area 1133 is also recessed inward from an outer surface of the corresponding side wall 113 and is communicated with the limiting groove 1131. Further, the limiting groove 1131 and the operation area 1133 are both disposed to be open to the outside along the transverse direction.

Meanwhile, each of the side walls 113 further has a pair of positioning grooves 1134 communicated with the positioning grooves 1131 formed thereon, and the positioning grooves 1134 are respectively disposed on two sides of the positioning grooves 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 operation area 1133 do not penetrate through the blocking wall 1135, and the positioning groove 1134 and the limiting groove 1131 are recessed inward 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 oppositely disposed in the height direction, and the pair of limiting walls 1136 are located outside the positioning groove 1134 and form the limiting grooves 1131 at intervals in the height direction.

The mounting portion 12 is hollow and has a mounting space 120 which is opened backwards, a plurality of positioning protrusions 121 are arranged on the outer surface of the mounting portion 12, and in this embodiment, the positioning protrusions 121 are arranged on the top surface and the bottom surface of the mounting portion 12 which are exposed outwards. The mounting portion 12 further has a protrusion 122 protruding from the top surface thereof, and in the present embodiment, the protrusion 122 is described as a pair, but the number is not limited thereto. Each of the protruding strips 122 extends in the front-rear direction, and in the transverse direction, a pair of the protruding strips 122 are disposed at intervals and located between a pair of the positioning protrusions 121.

The insulating body 1 further has a frame portion 15 protruding from the 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 upward protruding frame portion 15 is greater than the height of the upward protruding strip 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 completely inside the projection of the frame portion 15 on the vertical plane. In addition, in the height direction and the lateral direction, the frame portion 15 extends outward beyond the outer peripheral surface of the mounting portion 12, that is, the projection of the mounting portion 12 on the vertical plane completely falls within the projection of the frame portion 15 on the vertical plane.

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

In this embodiment, the protection portion 16 is disposed on the mounting portion 12 and connected to the rear end surface of the housing portion 15. Further, the protection part 16 has a chevron shape, viewed from the rear to the front, which is a symmetrical structure and has a straight section 161 on the upper side thereof and a pair of inclined sections 162 extending from the bottom end of the straight section 161, the pair of inclined sections 162 extending in opposite directions and being symmetrically disposed. In the transverse direction, the ribs 122 are 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 accommodated in the corresponding accommodating grooves 13, and each conductive terminal 2 includes at least one row arranged along the transverse direction, and each conductive terminal 2 has a contact portion 21 contacting with a mating terminal (not labeled) and a wiring portion 22 located at the rear side of the contact portion 21 to connect with the cable 3.

In this embodiment, the contact portion 21 is a frame-shaped structure, and a blocking surface 23 matched with the insulating body 1 is formed on one side of the contact portion in the height direction, further, in this embodiment, a slot 211 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. A sheet-shaped guide part 212 is formed on the lower side of the contact part 21 in a protruding manner, the guide part 212 is vertically arranged and extends in the front-back direction, and the guide part 212 and the blocking surface 23 jointly define two adjacent wall surfaces of the slot 211. When the conductive terminal 2 is inserted into the corresponding receiving slot 13, the stopping portion 1151 of the insulating housing 1 pushes forward the blocking surface 23 of the conductive terminal 2 to prevent the conductive terminal from backing.

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 latch arms 42 oppositely disposed at 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 docking components (not shown), and the latch arms 42 are respectively disposed at two sides of the base 41 in the transverse direction and are latched with latch portions 1132 formed on corresponding side walls 113.

Each of the latch arms 42 has a pair of connection portions 421 connected to the base 41 and spaced apart from each other, and a terminal portion 422 connecting ends of the connection portions 421, and the terminal portion 422 has a latch groove 4221 recessed outward from an inner wall surface thereof to be latched with a corresponding latch 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 positioning grooves 1134 of the corresponding sidewalls 113 to prevent the latch arms 42 from being excessively expanded by an improper external force. As shown in fig. 7, in a direction from front to back, the outer surface 4231 of the rib 423 is gradually arranged close to the inner surface 4232 thereof so that the rear section of the latch arm 42 can be opened outward at a certain angle, and in this embodiment, the inner surface 4232 is a vertical surface parallel to the front to back direction.

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

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

When the front cover 4 is assembled to the front side of the insulating body 1, the protruding portion 44 extends into the corresponding receiving groove 13, the locking groove 4221 is locked with the locking portion 1132 outside the insulating body 1, the protruding portion 44 presses the corresponding tongue portion 1152 at the lower side, so that the corresponding blocking portion 1151 moves toward the inside of the receiving groove 13 and the contact depth with the blocking surface 23 is increased, in this embodiment, that is, the tongue portion 1152 moves upward under the pressing action of the protruding portion 44, so that the blocking portion 1151 moves upward, and the blocking surface 23 is prevented from sliding out from the top end of the blocking portion 1151, and thus the locking between the two is further deepened to avoid loosing.

When the front cover 4 needs to be unlocked, only a force needs to be applied to the end portion 422 in the operation region 1133 to slightly open the latch arm 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 through the rear cover in the front-rear direction and a receiving cavity 50 opened forward, the mounting groove 51 has a guide slot 511 located at one side of the mounting groove 51 in the transverse direction, and the guide slot 511 is located at one side of the mounting groove 51 in the transverse direction and has a dimension in the height direction larger than that of a side portion thereof, so that the conductive terminal 1 has a certain directivity when being mounted in the rear cover 5. When assembling, after the rear cover 5 is assembled to the mounting portion 12 at the rear side of the insulating housing 1 from the rear to the front, the conductive terminal 2 enters the guide slot 511 in a predetermined direction, so that the guide portion 212 is inserted into the guide slot 511 and slides forward along the guide slot 511, and the conductive terminal 2 is integrally loaded into and passes through the corresponding mounting slot 51 from the rear to the front so as to be further inserted into and pass through the through hole 61 in the clamping member 6 from the front to the rear.

The top of the rear cover 5 is provided with a notch 52 located in the middle and a receiving portion 53 protruding thereon, the receiving portion 53 is partially disposed on two sides of the notch 52 in the transverse direction, and the receiving portion 53 has a receiving space 530 opened forward and downward for receiving the protrusion 122 disposed on the top of the insulating housing 1 therein.

In addition, the top wall and the bottom wall of the rear cover 5 respectively have a pair of locking grooves 54 communicating with the accommodating cavity 50, and the locking grooves 54 are located outside the accommodating portion 53 in the transverse direction, that is, the accommodating portion 53 is located closer to the notch portion 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 along the mating direction and a plurality of concave holes 62 uniformly distributed on the front and rear surfaces thereof and not penetrating therethrough. The through holes 61 have at least one row arranged in a transverse direction corresponding to the conductive terminals 2.

In this embodiment, taking the example 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 and spaced in the transverse direction, two rows of through holes 61 are spaced in the height direction, the clamping member 6 has three rows of concave holes 62 spaced in the height direction, the concave holes 62 in each row are spaced in the transverse direction, and one row of through holes 61 is sandwiched between two adjacent rows of concave holes 62.

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

Further, at least one circle of ribs 63 is formed on the outer circumferential 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-back direction. In a preferred embodiment of the invention, the clamping member 6 is made of a rubber material to have a 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 protruding toward the inside of the through holes 61, and at least one circle of the inner protrusions 64 is disposed in each of the through holes 61.

During the equipment, clamping piece 6 assembles into forward from the back in the installation space 120 of installation department 12, back lid 5 assemble forward from the back in installation department 12, just back lid 5 in clamping piece 6's rear covers clamping piece 6, protruding strip 122 inserts and is positioned in the correspondence the portion 53 that holds, location convex part 121 buckle and be positioned in the screens 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 piece 6 is pressed by the inner wall surface of the mounting part 12 and further pressed outside the insulating skin 31, so that the rear side of the insulating body 1 forms a good sealing effect, interference current is prevented from flowing forward from the mounting space 120, and high-voltage static flashover is prevented from reaching the conductive terminal 2 positioned at the front side.

The front cover 4 is assembled to the front side of the housing 1 from front to back and locks the conductive terminals 2 in the corresponding receiving slots 13, and the front cover 4 covers the inner side of the front end wall 114 in the height direction and the front-to-back direction.

When the clamping member 6 is installed in the installation space 120, the conductive terminal 2 is connected to the cable 3 and inserted into and through the through hole 61 from the rear to the front until the conductive terminal 2 is locked in the insulating body 1. Because the clamping piece 6 is provided with a plurality of non-through concave holes 62, the clamping piece 6 has strong elastic deformation capability on the premise of keeping the overall structural strength of the clamping piece, and the conductive terminal 2 is favorably inserted.

The electric connector 100 of the invention arranges the elastic clamping piece 6 at the periphery of the insulating skin 31 of the cable 3, the clamping piece 6 is assembled into the installation space 120 of the installation part 12 from back to front and is covered by the back cover 5, and meanwhile, the clamping piece 6 is pressed by the inner wall surface of the installation part 12 and is further pressed outside the insulating skin 31, so as to avoid the interference current from flowing into the installation space 120 from front, and particularly under the high-voltage environment, the electric connector can effectively prevent short circuit and element damage caused by the static flashover to the conductive terminal, thereby having higher safety performance.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. An electrical connector 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 on the front side of the insulating body, a mounting part positioned on the rear side of the insulating body and a plurality of accommodating grooves penetrating through the insulating body along a butt joint direction, the conductive terminals are assembled from back to front and accommodated in the corresponding accommodating grooves and comprise at least one row arranged along a transverse direction, each conductive terminal is provided with a contact part contacted with a butt joint terminal and a wiring part positioned on the rear side of the contact part, the cable is mechanically and electrically connected with the wiring parts of the corresponding conductive terminals in the accommodating grooves, the front cover is assembled on the front side of the insulating body from front to back and locks the conductive terminals in the corresponding accommodating grooves, and the rear cover is assembled on the mounting part from back to front, and the electrical connector is characterized in that: the electric connector is also provided with an elastic clamping piece sleeved on the periphery of the insulating skin of the cable, the clamping piece is assembled into the mounting space of the mounting part from back to front and is covered by the back cover from the back side to front, and meanwhile, the clamping piece is extruded by the inner wall surface of the mounting part and is further pressed outside the insulating skin so as to avoid the interference current from flowing into the mounting space from front.

2. The electrical connector of claim 1, wherein: the outer peripheral surface of the clamping piece is pressed and sealed by the inner wall surface of the mounting part, the front end surface of the clamping piece is pressed against the front side of the mounting part and limits the front surface of the mounting space, and the rear end surface of the clamping piece is pressed by the inner wall surface of the rear cover so as to seal the accommodating groove from the rear side.

3. The electrical connector of claim 2, wherein: the clamping piece is provided with a plurality of through holes penetrating through the clamping piece along the butt joint direction, and after the clamping piece is installed in the installation space from back to front, the conductive terminal is connected with the cable and inserted into and penetrates through the through holes from back to front until the conductive terminal is preliminarily clamped in the insulating body.

4. The electrical connector of claim 3, wherein: the clamping piece is also provided with a plurality of concave holes which are uniformly distributed on the front surface and the rear surface of the clamping piece and do not penetrate through the clamping piece along the front-back direction.

5. The electrical connector of claim 4, wherein: the rear cover is provided with at least one positioning column which protrudes forwards into the containing cavity of the rear cover, and the positioning column is inserted forwards into a corresponding concave hole arranged on the rear surface of the clamping piece.

6. The electrical connector of claim 1, wherein: the main body part is provided with a plurality of elastic walls which are arranged in one-to-one correspondence with the containing grooves, and the elastic walls are positioned in the corresponding containing grooves and stop the conductive terminals by means of stop parts which are formed by protruding the elastic walls.

7. The electrical connector of claim 6, wherein: the front cover is provided with a base body and a plurality of protruding parts protruding from the front side of the base body, the protruding parts and the accommodating grooves are arranged in a one-to-one correspondence mode, when the front cover is assembled on the front side of the insulating body, the protruding parts extend into the corresponding accommodating grooves and abut against the lower sides of the elastic walls and apply upward extrusion force to the elastic walls, and therefore the corresponding conductive terminals are finally clamped.

8. The electrical connector of claim 6, wherein: one side of the contact part in the height direction is provided with a blocking surface matched with the insulation body, and after the conductive terminal is inserted into the corresponding accommodating groove, the blocking part is forwards abutted against the blocking surface of the conductive terminal to form initial and final clamping.

9. The electrical connector of claim 1, wherein: the main body part is provided with a top wall and a bottom wall which are oppositely arranged and a pair of side walls which connect the top wall and the bottom wall, each side wall is provided with a limiting groove which is inwards sunken from the outer surface of the side wall and a buckling part which is arranged in the limiting groove, 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, and when the front cover is assembled at the front side of the insulating body, the buckling grooves on the buckling arms are buckled with the buckling parts.

10. The electrical connector of claim 9, wherein: each lateral wall still has a pair of constant head tank that is linked together with the spacing groove that sets up on it, a pair of constant head tank branch is arranged in the both sides of spacing groove in the direction of height, each buckle arm has a pair of fin along the outside extension of direction of height, a pair of fin stretches into in the corresponding constant head tank of corresponding lateral wall.