CN109361096B

CN109361096B - Cable connector

Info

Publication number: CN109361096B
Application number: CN201811269016.7A
Authority: CN
Inventors: 罗祖国
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2020-07-28
Anticipated expiration: 2038-10-29
Also published as: CN109361096A

Abstract

A cable connector, comprising: the insulating body is provided with at least one terminal groove which is concavely arranged from the front end of the insulating body and backwards penetrates through the insulating body; at least one terminal accommodated in the terminal groove; the cable is provided with at least one conducting wire, the conducting wire is sequentially provided with a first section, a second section and a third section from front to back, the first section and the second section are positioned in the terminal groove, the third section is positioned outside the insulating body, and the first section is electrically connected with the terminal; the waterproof plug is sleeved and fixed on the second section and is in sealing fit with the inner wall surface of the terminal groove; the sealing element is positioned at the rear part of the waterproof plug and covers the third section, so that the waterproof plug can be prevented from being extruded by injection molding pressure of the first insulating shell, the waterproof plug is prevented from deforming, the waterproofness of the cable connector is enhanced, the phenomenon that the electrical connection effect of the terminal is influenced when plastic rubber injected by the first insulating shell flows into the terminal groove can be avoided, and the sealing element can also play a role of waterproofing.

Description

Cable connector

Technical Field

The present invention relates to a cable connector, and more particularly, to a cable connector with a good waterproof effect. Background

At present, cable connectors are widely used, for example, for charging electronic devices, transmitting high definition data of video signals, and transmitting data signals of various other functions, and generally include an insulating body and a plurality of terminals disposed on the insulating body, where one end of each terminal is plugged into an automobile socket, the other end of each terminal is connected to a cable for transmitting power or signals, and a first insulating housing is injection molded outside the insulating body to fix the insulating body and the cable together. The cable connector and the automobile socket are electrically connected, so that the signal transmission and control functions on the whole automobile are realized. However, the waterproof performance of the cable connector is tested if the cable connector is not waterproof enough, which may affect the normal operation of the cable connector and the performance and service life of the vehicle, and therefore, the requirement for the waterproof performance is very high when designing and producing the cable. The existing waterproof structure commonly used for cable connectors is generally characterized in that a waterproof plug is additionally arranged in the cable connector, the waterproof plug is provided with a plurality of through holes for a plurality of wires of a cable to pass through, then the waterproof plug and the cable are assembled into an insulating body together, and the waterproof effect is achieved through interference fit of the waterproof plug and the insulating body, but a single integrated waterproof plug cannot achieve an ideal waterproof effect. Because the waterproof plug is elastic material, and the pressurized is out of shape easily, and many wires of cable are difficult for inserting the perforation, make the cable equipment is difficult, work as first insulating casing when injection moulding, the waterproof plug receives the impact of injection pressure, produces the deformation easily, and then leads to waterproof plug with produce the gap between the internal face of insulator, steam will enter into through the gap easily in the insulator, makes cable connector's waterproof performance is poor, and the plastic of first insulating casing injection moulding also can pass through the gap flows into in the insulator, pollutes the terminal, influences the electric connection of terminal.

The existing cable connector adopts another waterproof structure, that is, glue is filled in the insulating body to form a glue layer to coat the cable and seal the rear end of the insulating body, so as to achieve the sealing effect and prevent water vapor from entering the cable connector.

However, since the materials of the glue, the insulator and the wires are different, and the adhesion between the materials is poor, the glue layer may crack during the use of the cable connector, so that a single glue layer cannot achieve the sealing effect, the waterproof grade cannot meet the requirement, the air tightness is also poor, the structural stability of the cable connector is also reduced, and moreover, the cable connector used for an automobile generally has a large overall volume, a large amount of glue needs to be consumed to completely seal the rear end of the insulator, and the cost of the glue is high, so that the production cost of the cable connector is increased.

Therefore, there is a need for an improved cable connector to overcome the above problems.

Disclosure of Invention

In view of the problems in the prior art, an object of the present invention is to provide a cable connector, which has a first section, a second section, and a third section disposed on a conductive wire of a cable, so as to ensure that the cable connector has a good electrical connection function and effectively improve a waterproof level.

In order to achieve the purpose, the invention adopts the following technical scheme: the insulating body is provided with at least one terminal groove which is concavely arranged from the front end of the insulating body and penetrates through the insulating body backwards; at least one terminal accommodated in the terminal groove; the cable is provided with at least one conducting wire, the conducting wire is sequentially provided with a first section, a second section and a third section from front to back, the first section and the second section are positioned in the terminal groove, the third section is positioned outside the insulating body, and the first section is electrically connected with the terminal; the waterproof plug is sleeved and fixed on the second section and is in sealing fit with the inner wall surface of the terminal groove; and the sealing element seals the rear end of the insulating body in a dispensing forming mode, is positioned behind the waterproof plug and covers the third section.

Furthermore, the terminal is provided with two opposite side surfaces, at least one side surface extends forwards and is inwards protruded to form an elastic first contact part, the side surface extends backwards behind the first contact part and is inwards protruded to form an elastic guide connection part, the guide connection part extends backwards and towards the side wall of the terminal groove to form a butting part, the side wall of the terminal groove is correspondingly provided with a first blocking surface, and the first blocking surface is blocked at the rear end of the butting part.

Furthermore, the terminal is provided with a top surface and a bottom surface which are oppositely arranged, the top surface and the bottom surface are both connected with the two side surfaces, and the top surface and the bottom surface are both inwards convexly arranged to form a second contact part.

Furthermore, the terminal is provided with a limiting part protruding from at least one side surface along the vertical direction, the limiting part is positioned behind the abutting part, the side wall of the terminal groove is provided with a second blocking surface along the vertical direction, and the second blocking surface is blocked at the front end of the limiting part.

Further, the waterproof plug includes a anterior segment, a back end and is located the anterior segment with middle section between the back end, the terminal has a first clamping part and is located a second clamping part of first clamping part rear side, first clamping part centre gripping is fixed first section and with first section electric connection, the second clamping part centre gripping is fixed the anterior segment, the rear end face of back end with the laminating of the preceding terminal surface of sealing member.

Further, the middle section has two projections each of which is in interference fit with an inner wall surface of the terminal groove.

Further, the insulation body is provided with a base part and a matching part extending forwards from the base part, the terminal groove is concavely arranged from the front end of the matching part and extends backwards to the base part, the rear end of the base part is provided with a mounting surface, and the terminal clamps and fixes the first section and is assembled forwards in the terminal groove together with the lead from the mounting surface.

Furthermore, an accommodating cavity is concavely arranged forwards from the mounting surface and is positioned behind the terminal groove, the sealing element is provided with a first sealing part which is coated on the third section, and a second sealing part which extends forwards from the first sealing part is filled in the accommodating cavity.

Further, a gap is formed between the rear end face of the waterproof plug and the rear end face of the terminal groove, and a third sealing portion is arranged forward from the second sealing portion in a protruding mode to fill the gap.

Further, the front end face of the third sealing portion is tightly attached to the rear end face of the waterproof plug.

Furthermore, a fixing plate is convexly arranged on the periphery of the base part in an annular mode, the fixing plate surrounds the periphery of the matching part, a gap is reserved between the fixing plate and the outer wall surface of the matching part, an annular groove is concavely arranged on the front end face of the fixing plate in a backward mode, and a waterproof ring is embedded in the annular groove.

Further, the cooperation portion is equipped with two butt joint regions along the transverse direction of perpendicular to fore-and-aft direction side by side, two be equipped with a space groove between the butt joint region, two the butt joint region all is equipped with a plurality of terminal groove, and two the butt joint region terminal groove quantity is inequality.

Further, from insulator's outer wall is along the concave at least first recess of establishing of fore-and-aft direction, from insulator's outer wall is along the concave second recess of establishing in the transverse direction of perpendicular to fore-and-aft direction, second recess intercommunication first recess, a first insulation shell injection moulding in insulator is external and pack in proper order first recess with the second recess, first insulation shell cladding is fixed the sealing member and the wire.

Further, a beam is convexly arranged on the outer wall surface of the insulating body, the beam is positioned at the rear edge of the second groove, the first groove penetrates through the lower portion of the beam from back to front and is communicated with the second groove, the front edge of the first groove exceeds the front edge of the second groove from front to back, and the rear edge of the first groove exceeds the rear edge of the second groove from back to back.

Furthermore, at least one third groove is concavely arranged on the outer wall surface of the insulating body, the third groove is positioned in front of the second groove, and a second insulating shell is formed outside the first insulating shell in an cladding mode and fills the third groove.

Furthermore, the third groove is formed by inwards recessing and forwards extending from the outer wall surface of the insulation body, a stop wall is arranged on one side of the third groove of the insulation body, and the stop wall is positioned outside the second insulation shell and used for stopping the second insulation shell from separating from the third groove.

Furthermore, the second insulating shell is provided with a cable penetrating part which is bent downwards and extends for the cable to penetrate through, and the width of the cable penetrating part is gradually narrowed from top to bottom.

Further, the cable is equipped with many the wire, waterproof stopper has a plurality ofly, and each waterproof stopper cover is located each the second section of wire, insulator is equipped with a plurality ofly the terminal groove is used for holding a plurality ofly the terminal, each the rear end centre gripping of terminal is fixed each waterproof stopper, the wire with waterproof stopper along with the terminal inserts the correspondence together the terminal groove, each the wire still has a fourth section to be located the third section rear, the fourth section is located insulator is external and is located in the first insulating casing, a waterproof glue is scribbled the fourth section is peripheral and is filled every adjacent two the gap between the wire.

Furthermore, two first barriers are respectively arranged on two sides of the upper end of the terminal groove, two second barriers are respectively arranged on two sides of the lower end of the terminal groove, and a distance is formed between the first barriers and the second barriers on the same side in the vertical direction.

Further, the sealing element is made of UV glue, and the hardness of the sealing element after curing is larger than that of the waterproof plug.

Compared with the prior art, the invention has the following beneficial effects: the wire is sequentially provided with the first section, the second section and the third section from front to back, the first section and the second section are positioned in the terminal groove, the third section is positioned outside the insulating body, the waterproof plug is sleeved and fixed on the second section, the waterproof plug is in sealing fit with the inner wall surface of the terminal groove, so that the waterproof plug can achieve a good waterproof effect, the sealing element seals the rear end of the insulating body in a dispensing forming mode, the sealing element is positioned behind the waterproof plug and covers the third section, the cable has a waterproof function, the hardness of the sealing element is higher than that of the waterproof plug after the sealing element is cooled and solidified, the waterproof plug can be prevented from being extruded by injection molding pressure formed by the first insulating shell, and the waterproof plug is prevented from deforming to generate a gap with the inner wall surface of the insulating body, the terminal groove is formed in the first insulating shell, the terminal groove is formed in the second insulating shell, the first insulating shell is arranged in the terminal groove, water vapor is not easy to enter the terminal groove, the waterproofness of the cable connector is enhanced, plastic injected by the first insulating shell can be prevented from flowing into the terminal groove through a gap to affect the electrical connection effect of the terminal, the cable connector is guaranteed to have a good electrical connection function, the sealing element can also play a certain waterproof role, the cable connector is enabled to have a double-layer waterproof function, the waterproof grade of the cable connector is effectively improved, the air tightness is enhanced, the integral structural stability of the cable connector is improved, and the production cost is effectively reduced.

[ description of the drawings ]

FIG. 1 is an exploded perspective view of a cable connector according to the present invention;

FIG. 2 is a perspective assembly view of the cable connector of the present invention;

FIG. 3 is a partial enlarged view of a in FIG. 2;

FIG. 4 is a perspective partially exploded view of the cable connector of the present invention;

FIG. 5 is a schematic view of the terminal, waterproof plug and wire of the cable connector of the present invention mated together;

FIG. 6 is a schematic view of the cable connector according to the present invention with the insulative housing not engaged with the first and second insulative housings;

FIG. 7 is a rear view of FIG. 2;

FIG. 8 is a cross-sectional view taken along the A-A direction after the insulator body and the terminal, the waterproof plug, and the wire of FIG. 4 are assembled;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 10 is a cross-sectional view taken along the line C-C of FIG. 7;

FIG. 11 is a cross-sectional view taken along D-D of FIG. 10;

fig. 12 is a cross-sectional view taken along the direction E-E of fig. 8.

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, a cable connector 100 according to the present invention is used for plugging a mating connector (not shown) of an automobile, the mating connector has a mating cavity (not shown) and a plurality of mating terminals (not shown) disposed in the mating cavity, and the cable connector 100 is inserted into the mating cavity along a plugging direction to electrically connect with the mating connector. The cable connector 100 includes an insulating body 1, a plurality of terminals 2 accommodated in the insulating body 1, and two cables 3 electrically connected to the plurality of terminals 2, each cable 3 is composed of a plurality of wires 31, a plurality of waterproof plugs 4 are correspondingly sleeved on the plurality of wires 31, a sealing member 5 is formed at the rear end of the insulating body 1 by dispensing and located behind the waterproof plugs 4, a first insulating shell 6 is injection-molded outside the insulating body 1, a second insulating shell 7 is formed outside the first insulating shell 6 by cladding, and a waterproof ring 15 is embedded at the front end of the insulating body 1.

As shown in fig. 1, 2 and 3, the plugging direction of the insulating housing 1 into the mating cavity is defined as a front-back direction, the horizontal direction perpendicular to the front-back direction is defined as a transverse direction, and a vertical direction perpendicular to the front-back direction and the transverse direction is defined. The insulating body 1 has a mating portion 11 and a base portion 12, the mating portion 11 extends forward from the base portion 12, and the mating portion 11 is used for being inserted into the mating cavity of the mating connector to be plugged and mated with the mating connector. The insulating body 1 is provided with a plurality of terminal grooves 13 which are concavely arranged from the front end of the matching part 11 and extend backwards to the base part 12, and the terminal grooves 13 penetrate through the insulating body 1. The mating portion 11 is provided with two abutting areas 111 in parallel along the transverse direction for abutting with the docking connector, a spacing groove 112 is provided between the two abutting areas 111, and the spacing groove 112 vertically separates the two abutting areas 111. The two docking areas 111 are respectively provided with a plurality of terminal slots 13, the number of the terminal slots 13 of the two docking areas 111 is different, and the plurality of terminals 2 are respectively and correspondingly accommodated in the terminal slots 13 of the two docking areas 111 to transmit signals with different functions, so that the cable connector 100 can be compatible with transmission of different signals.

As shown in fig. 1, 2 and 3, two first barriers 113 are respectively disposed on two lateral sides of an upper end of each terminal groove 13, two second barriers 114 are respectively disposed on two lateral sides of a lower end of each terminal groove 13, the first barriers 113 and the second barriers 114 on the same side are aligned in a vertical direction, and a space 115 is formed between the first barriers 113 and the second barriers 114 on the same side of each terminal groove 13 in the vertical direction. When the mating connector is mated with the cable connector 100, the mating terminal easily collides with the first barrier 113 and the second barrier 114 during the process of being inserted into the terminal groove 13, and since the space 115 is formed between the first barrier 113 and the second barrier 114 on the same side of each terminal groove 13 in the vertical direction, a space is provided for the mating terminal, so that the mating terminal can be smoothly inserted, the risk that the first barrier 113 and the second barrier 114 are easily broken when being connected into a whole is avoided, the first barrier 113 and the second barrier 114 can also have elasticity, and the first barrier 113 and the second barrier 114 can be elastically deformed and are not easily broken when receiving the insertion force of the mating connector, thereby enhancing the structural strength of the insulating body 1. The sidewall of each terminal groove 13 is provided with a first blocking surface 131 (see fig. 8) and a second blocking surface 132 (see fig. 12) along the vertical direction, and the first blocking surface 131 is located in front of the second blocking surface 132.

As shown in fig. 1, 4, 6 and 8, the rear end of the base 12 defines a mounting surface 121, and the rear end surface of each terminal groove 13 is located in front of the mounting surface 121, i.e., the rear end surface of the terminal groove 13 is spaced apart from the mounting surface 121. A plurality of the terminals 2 are assembled forward from the mounting surface 121 to a plurality of the terminal grooves 13. A receiving cavity 122 is recessed forward from the mounting surface 121, the receiving cavity 122 is located behind the terminal groove 13, when the waterproof plug 4 is assembled to the terminal groove 13 together with the wire 31, a gap 123 is formed between the rear end surface of the waterproof plug 4 and the rear end surface of the terminal groove 13, so that the rear end surface of the waterproof plug 4 is located forward relative to the rear end surface of the terminal groove 13, the gap 123 is located forward of the receiving cavity 122 and is communicated with the receiving cavity 122, and the sealing member 5 fills the receiving cavity 122 and the gap 123, so that the sealing member 5 can seal the mounting surface 121.

As shown in fig. 1 and 4, a fixing plate 14 is protruded from the periphery of the base 12, and the fixing plate 14 is used for fixing the cable connector 100 to an electronic device of an automobile. The rear end of the fixing plate 14 is connected with the front end of the base 12 as a whole, the fixing plate 14 surrounds the periphery of the fitting portion 11, and a gap h is formed between the fixing plate 14 and the outer wall surface of the fitting portion 11, so that the fitting portion 11 can be smoothly inserted into the mating connector, and the fixing plate 14 is prevented from blocking the insertion. The front end face of the fixing plate 14 is recessed backwards to form an annular groove 141, the waterproof ring 15 is embedded in the annular groove 141, and the waterproof ring 15 can effectively prevent water vapor from entering the terminal groove 13 from the front end of the insulating body 1, so that a waterproof effect is achieved. The fixing plate 14 is rectangular, and four corners of the fixing plate 14 are respectively provided with a circular hole 142, and the circular holes 142 are used for installing a fixing member (not shown) to fix the cable connector 100 to an electronic device of an automobile.

As shown in fig. 1, 4 and 9, a plurality of first grooves 124 are recessed from the outer wall surface of the base 12 along the front-rear direction, the plurality of first grooves 124 extend along the front-rear direction, the plurality of first grooves 124 are arranged at intervals in the transverse direction, in this embodiment, the plurality of first grooves 124 surround the periphery of the base 12, and the rear edge of the first groove 124 abuts against the mounting surface 121. The outer wall surface of the base 12 is recessed with a second groove 125 along the transverse direction, the second groove 125 extends along the transverse direction, the second groove 125 is annularly disposed on the base 12, the second groove 125 is perpendicular to each of the first grooves 124, and the second groove 125 transversely penetrates through the plurality of first grooves 124. A plurality of concave portions 126 are transversely recessed from one end of the outer wall surface of the insulation body 1 close to the mounting surface 121, the plurality of concave portions 126 are annularly arranged around the base 12, the plurality of concave portions 126 are located behind the second grooves 125, the plurality of concave portions 126 and the plurality of first grooves 124 are alternately arranged along the transverse direction, that is, one first groove 124 is arranged between every two adjacent concave portions 126, and each concave portion 126 is communicated with each adjacent first groove 124. A plurality of third grooves 128 are recessed inward from the outer wall surface of the base 12 and extend forward to surround the front end of the base 12, the third grooves 128 are located in front of the first grooves 124 and the second grooves 125, and the second grooves 125 are located in front of the first grooves 124, that is, the first grooves 124, the second grooves 125, and the third grooves 128 are recessed from the outer wall surface of the base 12 in sequence from back to front. A cross beam 127 is laterally protruded from the outer wall surface of the base 12, the cross beam 127 is located at the rear edge of the second groove 125 and in front of the recess 126, that is, in the front-rear direction, the cross beam 127 is located between the second groove 125 and the recess 126, and the cross beam 127 is also located behind the third groove 128. The cross beam 127 and each first groove 124 are perpendicular to each other, the first grooves 124 are partially located at the rear of the cross beam 127, a plurality of gaps 1271 are formed in a penetrating manner from the rear end face of the cross beam 127 to the front, the gaps 1271 are communicated with the third grooves 128 in the front-rear direction, the first grooves 124 penetrate through the lower portion of the cross beam 127 from the rear to the front to be communicated with the second grooves 125, the front edges of the first grooves 124 exceed the front edges of the second grooves 125 forward, and the rear edges of the first grooves 124 exceed the rear edges of the second grooves 125 rearward. The insulation body 1 is provided with a stop wall 129 at one side of the third groove 128, the dimension of the stop wall 129 in the front-back direction is smaller than the dimension of the third groove 128 in the front-back direction, and the stop wall 129 is used for stopping the second insulation shell 7 from separating from the third groove 128. The stopping wall 129 is disposed right above the third groove 128 on the upper side of the base 12, and the stopping wall 129 is disposed right below the third groove 128 on the lower side of the base 12. In this embodiment, the first groove 124, the third groove 128 and the recess 126 are provided in plural, and in other embodiments, one of the first groove 124, the third groove 128 and the recess 126 may be provided.

As shown in fig. 5, 8 and 12, the terminal 2 has two opposite side surfaces 21, and a top surface 22 and a bottom surface 23 opposite to each other, the top surface 22 and the bottom surface 23 are connected to the two side surfaces 21, and the top surface 22, the bottom surface 23 and the side surfaces 21 together define a plug hole for inserting the mating terminal of the mating connector. Each side surface 21 extends forward and is protruded inward to form an elastic first contact portion 211, each side surface 21 extends backward behind the first contact portion 211 and is protruded inward to form a conductive portion 212, and the conductive portion 212 and the first contact portion 211 are used for being butted with the butting terminal. The top surface 22 and the bottom surface 23 are both provided with an elastic

second contact portion

221, 231 protruding inwards, the

second contact portion

221, 231 and the first contact portion 211 are both close to the front end surface of the terminal 2, and the

second contact portion

221, 231 and the first contact portion 211 are located on the same cross section of the terminal 2, so that the

second contact portion

221, 231 and the first contact portion 211 are simultaneously electrically connected with the butt terminal, and the conductive portion 212 can also be electrically connected with the butt terminal, thereby increasing the contact point between the terminal 2 and the butt terminal, and making the electrical connection between the terminal 2 and the butt terminal more stable. A supporting portion 213 is formed by extending from the guiding portion 212 backward and toward the sidewall of the terminal groove 13, the first blocking surface 131 is located behind the supporting portion 213, the first blocking surface 131 is blocked at the rear end of the supporting portion 213 to prevent the terminal 2 from withdrawing from the terminal groove 13 backward, a limiting portion 24 is located behind the supporting portion 213, the limiting portion 24 is protruded from the side surface 21 in the vertical direction, the height of the limiting portion 24 in the vertical direction is higher than that of the top surface 22, and the second blocking surface 132 is located in front of the limiting portion 24 to block the front end of the limiting portion 24 to prevent the terminal 2 from moving forward excessively. The terminal 2 has a first clamping portion 25 behind the position-limiting portion 24 and a second clamping portion 26 behind the first clamping portion 25.

As shown in fig. 5, 6 and 9, the two cables 3 are electrically connected to the plurality of terminals 2 in the two mating regions 111, respectively. The two cables 3 respectively include an outer insulating layer 33 and a plurality of wires 31 exposed out of the outer insulating layer 33, the plurality of wires 31 are respectively electrically connected corresponding to the plurality of terminals 2, each wire 31 sequentially has a first section 311, a second section 312 and a third section 313 from front to back, the first section 311 and the second section 312 are located in the terminal groove 13, and the third section 313 is located outside the insulating body 1. The first segment 311 is an inner conductor of the conductive wire 31, and the first clamping portion 25 clamps and fixes the first segment 311 by bending inward through a jig, and is electrically connected to the first segment 311. The second section 312 and the third section 313 are both located on the inner insulating layer of the lead 31, the waterproof plug 4 is sleeved and fixed on the second section 312, the inner wall surface of the waterproof plug 4 is in interference fit with the second section 312, a gap is prevented from being formed between the inner wall surface of the waterproof plug 4 and the second section 312, and water vapor is prevented from entering the lead 31. The sealing member 5 covers the third section 313, so that the third section 313 has a waterproof function. The conducting wire 31 of each cable 3 further includes a fourth section 314, the fourth section 314 is located behind the third section 313, the fourth section 314 is located outside the insulating body 1 and inside the first insulating shell 6, a waterproof glue 32 is coated on the periphery of the fourth sections 314 of the conducting wires 31 and fills a gap between every two adjacent conducting wires 31 to seal the gap between the two adjacent conducting wires 31 to prevent moisture from entering the inside of the cable 3, the waterproof glue 32 is adjacent to the outer insulating layer 33, in this embodiment, the fourth section 314 of each cable 3 is coated with the waterproof glue 32, and in other embodiments, only the fourth section 314 of one cable 3 is coated with the waterproof glue 32.

As shown in fig. 5 and 9, the waterproof plug 4 is fixed to the second section 312 in a sleeving manner, and the waterproof plug 4 is made of silica gel. The waterproof plug 4 includes a front section 41, a rear section 42, and a middle section 43 located between the front section 41 and the rear section 42. The front section 41 is held by the second holding portion 26, and the middle section 43 is in interference fit with the inner wall surface of the terminal groove 13 to provide a waterproof function. When the waterproof plug 4 is placed on the second clamping portion 26, the second clamping portion 26 is inwardly bent to be tightly attached to the front section 41 through extrusion of a jig, so that the effect of clamping and fixing the front section 41 is achieved, the waterproof plug 4 can be stably fixed on the terminal 2, the waterproof plug 4 can be plugged into the terminal groove 13 together with the terminal 2, and the waterproof plug 4 is prevented from being withdrawn from the terminal groove 13. The middle section 43 is provided with two annular protruding parts 431, the inner diameter of each protruding part 431 is larger than that of the terminal groove 13, when the waterproof plug 4 is plugged into the terminal groove 13, the protruding parts 431 are squeezed by the inner wall of the terminal groove 13, so that the protruding parts 431 are in sealing fit with the inner wall surface of the terminal groove 13, water vapor cannot enter the terminal groove 13, and the cable connector 100 achieves a strong waterproof effect.

As shown in fig. 9 and 12, a jig is used for dispensing at the third section 313, and after the glue is cooled and solidified, the sealing member 5 is formed to cover the periphery of the third section 313, so that the third section 313 has a waterproof function. The material of the sealing element 5 is preferably UV glue, so that the sealing element 5 can be quickly cured by ultraviolet irradiation after the third section 313 is glued. The sealing element 5 seals the rear end of the insulating body, the sealing element 5 is located behind the waterproof plug 4, the waterproof plug 4 is made of silica gel, so that the hardness of the sealing element 5 after curing is far greater than that of the waterproof plug 4, the sealing element 5 is located behind the waterproof plug 4, the waterproof plug 4 can be prevented from being extruded by injection molding pressure formed by the first insulating shell 6, the waterproof plug 4 is prevented from being deformed, a gap is further generated between the waterproof plug 4 and the inner wall surface of the terminal groove 13, water vapor is prevented from entering the insulating body 1 easily, the waterproofness of the cable connector 100 is enhanced, the phenomenon that plastic rubber injected by the first insulating shell 6 flows into the terminal groove 13 through the gap to affect the electrical connection effect of the terminal 2 can be avoided, and the cable connector 100 has a good electrical connection function, the sealing member 5 itself can also play a certain waterproof role, so that the cable connector 100 has a double-layer waterproof function, thereby effectively improving the waterproof grade of the cable connector 100, enhancing the air tightness, improving the overall structural stability of the cable connector 100, and effectively reducing the production cost. The sealing element 5 has a first sealing portion 51 covering the third segment 313, a second sealing portion 52 extending forward from the first sealing portion 51 and filling the accommodating cavity 122, the second sealing portion 52 covering the portion of the conductive wire 31 between the second segment 312 and the third segment 313, a third sealing portion 53 protruding forward from the second sealing portion 52 and filling the gap 123, and the third sealing portion 53 covering the end of the second segment 312. The rear end surface of the rear section 42 is closely attached to the front end surface of the third sealing portion 53 to seal the rear end of the terminal groove 13. In this embodiment, a part of the sealing element 5 is located outside the insulating body 1 to cover the third segment 313, and another part of the sealing element enters the insulating body 1 to fill the accommodating cavity 122 and the gap 123, in other embodiments, the insulating body 1 may not be provided with the accommodating cavity 122 and the gap 123, and the sealing element 5 is located outside the insulating body 1 and is tightly attached to the mounting surface 121, as long as the sealing element 5 can seal the rear end of the insulating body 1.

As shown in fig. 6, 7, 9, 10 and 11, the first insulating case 6 is injection molded outside the base 12, and when the first insulating case 6 is molded, molten plastic fills the first groove 124 and the recess 126 from back to front, flows into the lower portion of the cross member 127 through the first groove 124, and finally flows into the second groove 125 to fill the second groove 125. The first insulating case 6 includes a plurality of first filling portions 61 filled in the plurality of first grooves 124 and a plurality of bridging portions 62 filled in the plurality of recesses 126, and the plurality of bridging portions 62 connect the plurality of first filling portions 61 into a whole. The first insulating case 6 fills the second groove 125 to form a second filling portion 63. The second filling portion 63 is perpendicular to each of the first filling portions 61, the second filling portion 63 connects the first filling portions 61 into a whole, the bridging portion 62 is located behind the second filling portion 63 and between the first filling portions 61, and each bridging portion 62 connects two adjacent first filling portions 61. The front edge of the first filling part 61 is forwardly beyond the front edge of the second filling part 63, and the rear edge of the first filling part 61 is rearwardly beyond the rear edge of the second filling part 63. Therefore, the contact area between the first insulating shell 6 and the insulating body 1 is increased, the bonding force between the first insulating shell 6 and the insulating body 1 is enhanced, the beam 127 is located at the outer side of the first insulating shell 6 to block the first insulating shell 6, the first insulating shell 6 is prevented from being separated from the insulating body 1, and the structural stability of the first insulating shell 6 is enhanced. The first insulating case 6 covers and fixes the sealing member 5, the lead wire 31, and the waterproof adhesive 32. The second insulating shell 7 is formed by cladding the first insulating shell 6, and in this embodiment, the second insulating shell 7 is formed by cladding the first insulating shell 6 by injection molding. When the second insulating case 7 is molded, the melted plastic flows through the gap 1271 and is filled into the third groove 128, the second insulating case 128 passes over the first groove 124 and the second groove 125 to fill the third groove 128, the second insulating case 7 forms a plurality of third filling portions 71 in the third grooves 128, the third filling portions 71 are located in front of the first filling portions 61 and the second filling portions 63, the second filling portions 63 are located between the third filling portions 71 and the cross beams 127, and the rear edges of the second filling portions 63 and the front edges of the cross beams 127 are located on the same vertical plane. Since the stop wall 129 on the upper side of the insulation body 1 is stopped above the third filling portion 71, and the stop wall 129 on the lower side of the insulation body 1 is stopped below the third filling portion 71, the bonding force between the second insulation case 7 and the insulation body 1 is enhanced, and the cross beam 127 protrudes from the outer wall surface of the insulation body 1 and is embedded in the second insulation case 7, so that the second insulation case 7 and the insulation body 1 are bonded more firmly. The second insulating shell 7 has a cable exit 72 extending downward and bent for the cable 3 to pass through, and the width of the cable exit 72 is gradually narrowed from top to bottom.

In this embodiment, the cable connector 100 is assembled as follows:

firstly, the waterproof plug 4 is sleeved on the second section 312, the wire 31 is placed on the first clamping portion 25, so that the first clamping portion 25 clamps and fixes the first section 311, the second clamping portion 26 clamps and fixes the front section 41, the terminal 2, the wire 31 and the waterproof plug 4 are connected into a whole, the terminal 2 with the waterproof plug 4 and the wire 31 are integrally inserted into the terminal groove 13 from the mounting surface 121 forwards, the first sealing portion 51 is used for covering the third section 313 and sealing the rear end of the insulating body 1 in a dispensing manner, the second sealing portion 52 is used for filling the accommodating cavity 122, the third sealing portion 53 is used for filling the gap 123, and the front end face of the sealing element 5 is in sealing fit with the rear end face of the waterproof plug 4. The waterproof glue 32 is applied to the fourth section 314 to fill the gap between every two adjacent wires 31. And filling molten plastic into the first groove 124 by using an injection molding machine, and filling the molten plastic into the second groove 125 through the lower part of the cross beam 127 to form the first insulating shell 6, wherein the first insulating shell 6 covers the sealing member 5, the lead 31 and the waterproof adhesive 32. After the first insulating case 6 is injection molded, an injection molding machine is used to fill the third groove 128 with molten plastic and cover the first insulating case 6, so as to form the second insulating case 7. The beam 127 protrudes from the surface of the insulating body 1 and is embedded in the second insulating shell 7, the second insulating shell 7 covers the first insulating shell 6 and part of the cable 3, and finally, the waterproof ring 15 is embedded in the annular groove 141.

To sum up, the cable connector 100 of the present invention has the following advantages:

(1) the sealing element 5 is formed on the third section 313 in a dispensing forming manner to cover the periphery of the third section 313 and seal the rear end of the insulating body 1, so that the third section 313 has a waterproof function, and the sealing element 5 is located behind the waterproof plug 4 and fills the accommodating cavity 122 and the gap 123, so that the hardness of the cured sealing element 5 is much greater than that of the waterproof plug 4, thereby not only preventing the waterproof plug 4 from being extruded by the injection molding pressure formed by the first insulating shell 6, but also preventing the waterproof plug 4 from deforming and generating a gap with the inner wall surface of the terminal groove 13, so that water vapor is not easy to enter the insulating body 1, further enhancing the waterproof performance of the cable connector 100, and preventing plastic cement injected by the first insulating shell 6 from flowing into the terminal groove 13 through the gap to affect the electrical connection effect of the terminal 2, the cable connector 100 is ensured to have a good electrical connection function, and the sealing member 5 itself can also play a certain waterproof role, so that the cable connector 100 has a double-layer waterproof function, thereby effectively improving the waterproof grade of the cable connector 100, enhancing the air tightness, improving the overall structural stability of the cable connector 100, and effectively reducing the production cost.

(2) When the waterproof plug 4 is placed on the second clamping portion 26, the second clamping portion 26 clamps and fixes the front section 41, the waterproof plug 4 is stably fixed on the terminal 2, so that the waterproof plug 4 and the terminal 2 can be plugged into the terminal groove 13 together, the waterproof plug 4 is prevented from exiting the terminal groove 13, the middle section 43 is provided with two annular protruding portions 431, the inner diameter of each protruding portion 431 is larger than that of the terminal groove 13, when the waterproof plug 4 is plugged into the terminal groove 13, the protruding portions 431 are squeezed by the inner wall of the terminal groove 13, the protruding portions 431 are in interference fit with the inner wall of the terminal groove 13, water vapor cannot enter the terminal groove 13, and the cable connector 100 achieves a strong waterproof effect.

(3) The accommodating cavity 122 is recessed forward from the mounting surface 121, the accommodating cavity 122 is located behind the terminal groove 13, when the waterproof plug 4 is assembled to the terminal groove 13 together with the wire 31, the gap 123 is provided between the rear end surface of the waterproof plug 4 and the rear end surface of the terminal groove 13, so that the rear end surface of the waterproof plug 4 is located forward relative to the rear end surface of the terminal groove 13, the gap 123 is located forward of the accommodating cavity 122 and is communicated with the accommodating cavity 122, and the sealing member 5 fills the accommodating cavity 122 and the gap 123, so that not only can the mounting surface 121 be sealed by the sealing member 5, but also the rear end surface of the terminal groove 13 can be sealed by the sealing member 5, and the sealing effect is better.

(4) Each side surface 21 extends forward and protrudes inward to form the elastic first contact portion 211, each side surface 21 extends backward behind the first contact portion 211 and protrudes inward to form the conductive portion 212, and the conductive portion 212 and the first contact portion 211 are used for being abutted with the abutting terminal. The top surface 22 and the bottom surface 23 are both inwardly protruded to form elastic

second contact portions

221, 231, the

second contact portions

221, 231 and the first contact portion 211 can be simultaneously electrically connected with the butt terminal, and the conductive portion 212 can also be electrically connected with the butt terminal, thereby increasing the contact points of the terminal 2 and the butt terminal, and making the electrical connection of the terminal 2 and the butt terminal more stable.

(5) Because the space 115 is formed between the first partition 113 and the second partition 114 on the same side of each terminal slot 13 in the vertical direction, an abdicating space can be provided for the butt-joint terminal, so that the butt-joint terminal can be smoothly inserted, the risk that the first partition 113 and the second partition 114 are easily broken when being connected into a whole is avoided, the first partition 113 and the second partition 114 can also have elasticity, and when the insertion force of the butt-joint connector is received, the elastic deformation can be performed, the breakage is not easily caused, and the structural strength of the insulation body 1 is enhanced.

(6) The two docking areas 111 are respectively provided with a plurality of terminal slots 13, the number of the terminal slots 13 of the two docking areas 111 is different, and the plurality of terminals 2 are respectively and correspondingly accommodated in the terminal slots 13 of the two docking areas 111 to transmit signals with different functions, so that the cable connector 100 can be compatible with transmission of different signals.

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. A cable connector, comprising:

the insulating body is provided with a base part and a matching part extending forwards from the base part, the terminal groove is concavely arranged from the front end of the matching part and extends backwards to the base part, the rear end of the base part is provided with a mounting surface, an accommodating cavity is concavely arranged forwards from the mounting surface, and the accommodating cavity is positioned behind the terminal groove;

at least one terminal accommodated in the terminal groove;

the cable is provided with at least one conducting wire, the conducting wire is sequentially provided with a first section, a second section and a third section from front to back, the first section and the second section are positioned in the terminal groove, the third section is positioned outside the insulating body, the first section is electrically connected with the terminal, and the terminal clamps and fixes the first section and is assembled in the terminal groove from the mounting surface to front together with the conducting wire;

the waterproof plug is sleeved and fixed on the second section and is in sealing fit with the inner wall surface of the terminal groove, and a gap is formed between the rear end surface of the waterproof plug and the rear end surface of the terminal groove;

the sealing element is positioned behind the waterproof plug and is provided with a first sealing part for coating the third section, a second sealing part extends forwards from the first sealing part for filling the accommodating cavity, a third sealing part is arranged forwards and convexly from the second sealing part for filling the gap, and the front end face of the third sealing part is tightly attached to the rear end face of the waterproof plug.

2. The cable connector of claim 1, wherein: the terminal is provided with two opposite side surfaces, at least one side surface extends forwards and is inwards protruded to form an elastic first contact part, the side surface extends backwards behind the first contact part and is inwards protruded to form an elastic guide connection part, the side surface extends backwards from the guide connection part and towards the side wall of the terminal groove to form a butting part, the side wall of the terminal groove is correspondingly provided with a first blocking surface, and the first blocking surface is blocked at the rear end of the butting part.

3. The cable connector of claim 2, wherein: the terminal is provided with a top surface and a bottom surface which are oppositely arranged, the top surface and the bottom surface are connected with the two side surfaces, and the top surface and the bottom surface are both inwards convexly arranged to form a second contact part.

4. The cable connector of claim 2, wherein: the terminal is provided with a limiting part protruding from at least one side surface along the vertical direction, the limiting part is positioned behind the abutting part, the side wall of the terminal groove is provided with a second blocking surface along the vertical direction, and the second blocking surface is blocked at the front end of the limiting part.

5. The cable connector of claim 1, wherein: the waterproof plug comprises a front section, a rear section and a middle section between the front section and the rear section, the terminal is provided with a first clamping part and a second clamping part located on the rear side of the first clamping part, the first clamping part is clamped and fixed to the first section and the first section of electric connection, the second clamping part is clamped and fixed to the front section, and the rear end face of the rear section is attached to the front end face of the sealing piece.

6. The cable connector of claim 5, wherein: the middle section has two projections, each of which is in interference fit with an inner wall surface of the terminal groove.

7. The cable connector of claim 1, wherein: and a fixing plate is convexly arranged on the periphery of the base part, the fixing plate surrounds the periphery of the matching part, a gap is reserved between the fixing plate and the outer wall surface of the matching part, an annular groove is concavely arranged backwards from the front end surface of the fixing plate, and a waterproof ring is embedded in the annular groove.

8. The cable connector of claim 1, wherein: the cooperation portion is equipped with two butt joint regions along the transverse direction of perpendicular to fore-and-aft direction side by side, two be equipped with a space groove between the butt joint region, two the butt joint region all is equipped with a plurality ofly the terminal groove, and two the butt joint region the terminal groove quantity is inequality.

9. The cable connector of claim 1, wherein: from insulator's outer wall is along the concave at least first recess of establishing of fore-and-aft direction, from insulator's outer wall is along the concave second recess of establishing in the transverse direction of perpendicular to fore-and-aft direction, second recess intercommunication first recess, a first insulation shell injection moulding in insulator is external and pack in proper order first recess with the second recess, first insulation shell cladding is fixed the sealing member and the wire.

10. The cable connector of claim 9, wherein: the outer wall surface of the insulating body is convexly provided with a beam, the beam is positioned at the rear edge of the second groove, the first groove penetrates through the lower part of the beam from back to front and is communicated with the second groove, the front edge of the first groove exceeds the front edge of the second groove from front to back, and the rear edge of the first groove exceeds the rear edge of the second groove from back to back.

11. The cable connector of claim 9, wherein: at least one third groove is concavely arranged on the outer wall surface of the insulation body, the third groove is positioned in front of the second groove, and a second insulation shell is formed outside the first insulation shell in a cladding mode and fills the third groove.

12. The cable connector of claim 11, wherein: the third groove is formed by inwards recessing and forwards extending from the outer wall surface of the insulating body, a stopping wall is arranged on one side of the third groove of the insulating body, and the stopping wall is positioned outside the second insulating shell and used for stopping the second insulating shell from separating from the third groove.

13. The cable connector of claim 11, wherein: the second insulating shell is provided with a cable penetrating part which is bent downwards and extends for the cable to penetrate through, and the width of the cable penetrating part is gradually narrowed from top to bottom.

14. The cable connector of claim 9, wherein: the cable is equipped with many the wire, waterproof stopper has a plurality ofly, and each waterproof stopper cover is located each the wire the second section, insulator is equipped with a plurality ofly the terminal groove is used for holding a plurality ofly the terminal, each the rear end centre gripping of terminal is fixed waterproof stopper, the wire with waterproof stopper along with the terminal inserts the correspondence together the terminal groove, each the wire still has a fourth section to be located the third section rear, the fourth section is located insulator is external and to be located in the first insulating casing, a waterproof glue is scribbled in fourth section periphery and every adjacent two of filling gap between the wire.

15. The cable connector of claim 1, wherein: two first barriers are respectively arranged on two sides of the upper end of the terminal groove, two second barriers are respectively arranged on two sides of the lower end of the terminal groove, and a distance is formed between the first barriers and the second barriers on the same side in the vertical direction.

16. The cable connector of claim 1, wherein: the sealing element is made of UV glue, and the hardness of the sealing element after curing is greater than that of the waterproof plug.

17. A cable connector, comprising:

the insulating body is concavely arranged from the front end of the insulating body and penetrates through the insulating body backwards, at least one first groove is concavely arranged from the outer wall surface of the insulating body along the front-back direction, a second groove is concavely arranged from the outer wall surface of the insulating body along the transverse direction vertical to the front-back direction and communicated with the first groove, a beam is convexly arranged on the outer wall surface of the insulating body and positioned at the rear edge of the second groove, the first groove penetrates through the lower part of the beam forwards from the back to the front and is communicated with the second groove, the front edge of the first groove forwards exceeds the front edge of the second groove, and the rear edge of the first groove backwards exceeds the rear edge of the second groove;

at least one terminal accommodated in the terminal groove;

the cable is provided with at least one conducting wire, the conducting wire is sequentially provided with a first section, a second section and a third section from front to back, the first section and the second section are positioned in the terminal groove, the third section is positioned outside the insulating body, and the first section is electrically connected with the terminal;

the waterproof plug is sleeved and fixed on the second section and is in sealing fit with the inner wall surface of the terminal groove;

the sealing element seals the rear end of the insulating body in a dispensing forming mode, is positioned behind the waterproof plug and covers the third section;

and the first insulating shell is formed outside the insulating body in an injection molding mode, sequentially fills the first groove and the second groove, and is coated and fixed on the sealing element and the lead.

18. The cable connector of claim 17, wherein: the terminal is provided with two opposite side surfaces, at least one side surface extends forwards and is inwards protruded to form an elastic first contact part, the side surface extends backwards behind the first contact part and is inwards protruded to form an elastic guide connection part, the side surface extends backwards from the guide connection part and towards the side wall of the terminal groove to form a butting part, the side wall of the terminal groove is correspondingly provided with a first blocking surface, and the first blocking surface is blocked at the rear end of the butting part.

19. The cable connector of claim 18, wherein: the terminal is provided with a top surface and a bottom surface which are oppositely arranged, the top surface and the bottom surface are connected with the two side surfaces, and the top surface and the bottom surface are both inwards convexly arranged to form a second contact part.

20. The cable connector of claim 18, wherein: the terminal is provided with a limiting part protruding from at least one side surface along the vertical direction, the limiting part is positioned behind the abutting part, the side wall of the terminal groove is provided with a second blocking surface along the vertical direction, and the second blocking surface is blocked at the front end of the limiting part.

21. The cable connector of claim 17, wherein: the waterproof plug comprises a front section, a rear section and a middle section between the front section and the rear section, the terminal is provided with a first clamping part and a second clamping part located on the rear side of the first clamping part, the first clamping part is clamped and fixed to the first section and the first section of electric connection, the second clamping part is clamped and fixed to the front section, and the rear end face of the rear section is attached to the front end face of the sealing piece.

22. The cable connector of claim 21, wherein: the middle section has two projections, each of which is in interference fit with an inner wall surface of the terminal groove.

23. The cable connector of claim 17, wherein: the insulation body is provided with a base part and a matching part extending forwards from the base part, the terminal groove is concavely arranged from the front end of the matching part and extends backwards to the base part, the rear end of the base part is provided with a mounting surface, and the terminal clamps and fixes the first section and is assembled forwards in the terminal groove together with the lead from the mounting surface.

24. The cable connector of claim 23, wherein: and an accommodating cavity is concavely arranged forwards from the mounting surface and is positioned behind the terminal groove, the sealing element is provided with a first sealing part for coating the third section, and a second sealing part extends forwards from the first sealing part for filling the accommodating cavity.

25. The cable connector of claim 24, wherein: a gap is arranged between the rear end face of the waterproof plug and the rear end face of the terminal groove, and a third sealing part is arranged forwards in a protruding mode from the second sealing part to fill the gap.

26. The cable connector of claim 23, wherein: and a fixing plate is convexly arranged on the periphery of the base part, the fixing plate surrounds the periphery of the matching part, a gap is reserved between the fixing plate and the outer wall surface of the matching part, an annular groove is concavely arranged backwards from the front end surface of the fixing plate, and a waterproof ring is embedded in the annular groove.

27. The cable connector of claim 23, wherein: the cooperation portion is equipped with two butt joint regions along the transverse direction of perpendicular to fore-and-aft direction side by side, two be equipped with a space groove between the butt joint region, two the butt joint region all is equipped with a plurality ofly the terminal groove, and two the butt joint region the terminal groove quantity is inequality.

28. The cable connector of claim 17, wherein: at least one third groove is concavely arranged on the outer wall surface of the insulation body, the third groove is positioned in front of the second groove, and a second insulation shell is formed outside the first insulation shell in a cladding mode and fills the third groove.

29. The cable connector of claim 28, wherein: the third groove is formed by inwards recessing and forwards extending from the outer wall surface of the insulating body, a stopping wall is arranged on one side of the third groove of the insulating body, and the stopping wall is positioned outside the second insulating shell and used for stopping the second insulating shell from separating from the third groove.

30. The cable connector of claim 28, wherein: the second insulating shell is provided with a cable penetrating part which is bent downwards and extends for the cable to penetrate through, and the width of the cable penetrating part is gradually narrowed from top to bottom.

31. The cable connector of claim 17, wherein: the cable is equipped with many the wire, waterproof stopper has a plurality ofly, and each waterproof stopper cover is located each the wire the second section, insulator is equipped with a plurality ofly the terminal groove is used for holding a plurality ofly the terminal, each the rear end centre gripping of terminal is fixed waterproof stopper, the wire with waterproof stopper along with the terminal inserts the correspondence together the terminal groove, each the wire still has a fourth section to be located the third section rear, the fourth section is located insulator is external and to be located in the first insulating casing, a waterproof glue is scribbled in fourth section periphery and every adjacent two of filling gap between the wire.

32. The cable connector of claim 17, wherein: two first barriers are respectively arranged on two sides of the upper end of the terminal groove, two second barriers are respectively arranged on two sides of the lower end of the terminal groove, and a distance is formed between the first barriers and the second barriers on the same side in the vertical direction.

33. The cable connector of claim 17, wherein: the sealing element is made of UV glue, and the hardness of the sealing element after curing is greater than that of the waterproof plug.

34. A cable connector, comprising:

the terminal slot is concavely arranged from the front end of the insulating body and penetrates through the insulating body backwards, at least one first groove is concavely arranged from the outer wall surface of the insulating body along the front-back direction, a second groove is concavely arranged from the outer wall surface of the insulating body along the transverse direction vertical to the front-back direction, the second groove is communicated with the first groove, at least one third groove is concavely arranged from the outer wall surface of the insulating body, and the third groove is positioned in front of the second groove;

at least one terminal accommodated in the terminal groove;

the first insulating shell is formed outside the insulating body in an injection molding mode and sequentially fills the first groove and the second groove, and the sealing element and the lead are fixedly coated by the first insulating shell;

and the second insulating shell is coated and molded outside the first insulating shell and fills the third groove.

35. The cable connector of claim 34, wherein: the terminal is provided with two opposite side surfaces, at least one side surface extends forwards and is inwards protruded to form an elastic first contact part, the side surface extends backwards behind the first contact part and is inwards protruded to form an elastic guide connection part, the side surface extends backwards from the guide connection part and towards the side wall of the terminal groove to form a butting part, the side wall of the terminal groove is correspondingly provided with a first blocking surface, and the first blocking surface is blocked at the rear end of the butting part.

36. The cable connector of claim 35, wherein: the terminal is provided with a top surface and a bottom surface which are oppositely arranged, the top surface and the bottom surface are connected with the two side surfaces, and the top surface and the bottom surface are both inwards convexly arranged to form a second contact part.

37. The cable connector of claim 35, wherein: the terminal is provided with a limiting part protruding from at least one side surface along the vertical direction, the limiting part is positioned behind the abutting part, the side wall of the terminal groove is provided with a second blocking surface along the vertical direction, and the second blocking surface is blocked at the front end of the limiting part.

38. The cable connector of claim 34, wherein: the waterproof plug comprises a front section, a rear section and a middle section between the front section and the rear section, the terminal is provided with a first clamping part and a second clamping part located on the rear side of the first clamping part, the first clamping part is clamped and fixed to the first section and the first section of electric connection, the second clamping part is clamped and fixed to the front section, and the rear end face of the rear section is attached to the front end face of the sealing piece.

39. The cable connector of claim 38, wherein: the middle section has two projections, each of which is in interference fit with an inner wall surface of the terminal groove.

40. The cable connector of claim 34, wherein: the insulation body is provided with a base part and a matching part extending forwards from the base part, the terminal groove is concavely arranged from the front end of the matching part and extends backwards to the base part, the rear end of the base part is provided with a mounting surface, and the terminal clamps and fixes the first section and is assembled forwards in the terminal groove together with the lead from the mounting surface.

41. The cable connector of claim 40, wherein: and an accommodating cavity is concavely arranged forwards from the mounting surface and is positioned behind the terminal groove, the sealing element is provided with a first sealing part for coating the third section, and a second sealing part extends forwards from the first sealing part for filling the accommodating cavity.

42. The cable connector of claim 41, wherein: a gap is arranged between the rear end face of the waterproof plug and the rear end face of the terminal groove, and a third sealing part is arranged forwards in a protruding mode from the second sealing part to fill the gap.

43. The cable connector of claim 40, wherein: and a fixing plate is convexly arranged on the periphery of the base part, the fixing plate surrounds the periphery of the matching part, a gap is reserved between the fixing plate and the outer wall surface of the matching part, an annular groove is concavely arranged backwards from the front end surface of the fixing plate, and a waterproof ring is embedded in the annular groove.

44. The cable connector of claim 40, wherein: the cooperation portion is equipped with two butt joint regions along the transverse direction of perpendicular to fore-and-aft direction side by side, two be equipped with a space groove between the butt joint region, two the butt joint region all is equipped with a plurality ofly the terminal groove, and two the butt joint region the terminal groove quantity is inequality.

45. The cable connector of claim 34, wherein: the third groove is formed by inwards recessing and forwards extending from the outer wall surface of the insulating body, a stopping wall is arranged on one side of the third groove of the insulating body, and the stopping wall is positioned outside the second insulating shell and used for stopping the second insulating shell from separating from the third groove.

46. The cable connector of claim 34, wherein: the second insulating shell is provided with a cable penetrating part which is bent downwards and extends for the cable to penetrate through, and the width of the cable penetrating part is gradually narrowed from top to bottom.

47. The cable connector of claim 34, wherein: the cable is equipped with many the wire, waterproof stopper has a plurality ofly, and each waterproof stopper cover is located each the wire the second section, insulator is equipped with a plurality ofly the terminal groove is used for holding a plurality ofly the terminal, each the rear end centre gripping of terminal is fixed waterproof stopper, the wire with waterproof stopper along with the terminal inserts the correspondence together the terminal groove, each the wire still has a fourth section to be located the third section rear, the fourth section is located insulator is external and to be located in the first insulating casing, a waterproof glue is scribbled in fourth section periphery and every adjacent two of filling gap between the wire.

48. The cable connector of claim 34, wherein: two first barriers are respectively arranged on two sides of the upper end of the terminal groove, two second barriers are respectively arranged on two sides of the lower end of the terminal groove, and a distance is formed between the first barriers and the second barriers on the same side in the vertical direction.

49. The cable connector of claim 34, wherein: the sealing element is made of UV glue, and the hardness of the sealing element after curing is greater than that of the waterproof plug.