CN112968322A - Electrical connector - Google Patents

Abstract

The invention discloses an electric connector, which comprises a drawing shell, a plug connector and a shell, wherein a cavity is formed in the drawing shell in a front-back penetrating mode, the plug connector is arranged in the cavity, the shell is fixedly arranged outside the drawing shell, the plug connector comprises an insulating body and a terminal assembly which is integrally formed with the insulating body, the insulating body comprises a butt joint tongue part and a step part formed by extending backwards from the butt joint tongue part, the electric connector also comprises a metal piece fixed on the step part, the metal piece is in contact with the drawing shell and welded together, and the front end and the rear end of the metal piece are respectively provided with a forward stopping structure and a backward stopping structure which are used for preventing the plug connector from moving forwards and backwards. The electric connector enables one metal ring to have multiple functions, not only does not damage the original functions, but also increases the position stopping function, has multiple purposes, greatly saves the layout space, enables the structure to be more compact, reduces the manufacturing cost and further reduces the product cost.

Description

Electrical connector

Technical Field

The present application relates to an electrical connector.

Background

The Type C Type electric connector is a USB interface supporting positive and negative insertion, and has promoted powerful data transmission ability and power transmission ability, is a universal interface standard widely acknowledged and adopted by the international society simultaneously, and is just replacing traditional Micro USB interface comprehensively. Type C Type electric connector generally includes the casing, locates plug connector in the casing, the plug connector includes upper and lower two rows of independent terminal groups, arranges the medium plate between the upper and lower two rows of terminal groups in, will terminal group with insulator and ring cover that medium plate fixing is as an organic whole are in insulator is last, be provided with on the casing right before, after the plug connector ends the position structure, should before, after end the position structure and tear the shaping usually on the casing, processing technology is complicated. The stop structure can stop the front and the back of the plug-in connector, but brings the defect that the shell is manufactured by adopting a drawing process, the wall surface of the shell is seamless and nonporous, the self strength and the waterproof performance of the shell are ensured, and the self integrity of the drawing shell damaged by the stop structure reduces the strength and the waterproof performance of the drawing shell. In addition to the above, the stop structure in the market has other stop structures, but has the defects of large occupied space, non-compact structure, need of adding separate parts to manufacture and the like, and the problems cannot be solved from the root causes of cost, production efficiency and the like.

Disclosure of Invention

In view of the above, it is desirable to provide an electrical connector that is not damaged, can be implemented without adding parts, and is versatile and cost-effective.

For solving above-mentioned technical problem, this application provides an electric connector, run through the extraction casing that is formed with the cavity, locate including the front and back connector clip in the cavity and holding in extract the outer shell of casing, the connector clip include insulator and with insulator shaping terminal subassembly as an organic whole, insulator includes the butt joint tongue and certainly the butt joint tongue is to the step portion that extends formation, still including being fixed in metalwork on the step portion, the metalwork with extract the casing contact and weld together, metalwork preceding, rear end are equipped with respectively and prevent the connector clip is to, after to the removal to the front to only the bit architecture and to the back to only the bit architecture.

Furthermore, the metal piece is of an annular structure and is arranged on the periphery of the step part in an annular mode, and the metal rings are formed by stamping, bending and riveting metal plates.

Furthermore, the thickness of the step part is greater than that of the butt joint tongue part, a forward stop step is arranged at the position, corresponding to the forward stop structure, of the front end of the step part, and the forward stop step penetrates through the step part from one surface, adjacent to the drawing shell, of the step part and the front end surface of the step part to be communicated with the outside; a rear stopping step is arranged at the position, corresponding to the rear stopping structure, of the rear end of the step part, and penetrates through the step part from one surface, adjacent to the drawing shell, of the step part and the rear end surface of the step part to be communicated with the outside; the forward stopping structure and the backward stopping structure are respectively formed by the downward extension of the front end and the rear end of the metal ring or the downward tearing of the front end and the rear end of the metal ring.

Furthermore, a fast-assembly guide lug is arranged on the step part and adjacent to one surface of the drawing shell, and the fast-assembly guide lug is provided with an upper convex surface parallel to the step part and adjacent to one surface of the drawing shell and a guide slope surface formed by the upward convex surface in a forward and downward inclined extension mode and/or a backward and downward inclined extension mode.

Further, the insulation body further comprises a base independent of the rear of the step part, a disconnection interval part is arranged between the base and the step part, the base and the step part are connected together through the terminal assembly, the disconnection interval part is at least partially surrounded by the drawing shell, waterproof glue is injected into the disconnection interval part, and the waterproof glue is used for bonding gaps among the terminal assembly, the insulation body and the inner surface of the drawing shell to achieve water proofing.

Furthermore, the terminal assembly comprises an upper row of terminals, a lower row of terminals and a middle plate clamped between the upper row of terminals and the lower row of terminals, wherein the upper row of terminals and the lower row of terminals are integrally formed with the insulating body, each upper row of terminals and the lower row of terminals comprise a plurality of conductive terminals, each conductive terminal comprises a buried holding part buried in the insulating body, a butt joint part extending forwards from the buried holding part and exposed on the upper surface and the lower surface of the butt joint tongue part, and a welding pin extending out of the insulating body from the buried holding part.

Further, the middle plate includes a first middle plate disposed between two conductive terminals on one lateral outer side of the upper row terminal and the lower row terminal and a second middle plate disposed between two conductive terminals on the other lateral outer side of the upper row terminal and the lower row terminal, and the first middle plate and the second middle plate are respectively located between the abutting portions of the two corresponding conductive terminals.

Furthermore, the first middle plate and the second middle plate are provided with buckling parts exposed on the transverse outer side of the insulating body.

Furthermore, a waterproof ring is arranged on the front end ring of the drawing shell, a baffle ring is formed by outwards extending the front end of the drawing shell, and the front end of the waterproof ring abuts against the rear end face of the baffle ring.

Furthermore, the shell comprises a first shell covering the drawing shell downwards and a second shell covering the drawing shell upwards and butted with the first shell, the first shell and the second shell respectively comprise cover parts welded with the upper surface and the lower surface of the drawing shell, butt joint lug parts formed by transversely extending the cover parts and fixing holes formed in the butt joint lug parts, and welding pins protrude downwards from the first shell and/or the second shell.

Compared with the existing electric connector, the electric connector has the ingenious design that the structure of the original metal ring is improved, and the front stop structure and the rear stop structure are integrally formed at the front end and the rear end of the metal ring by utilizing the thickness of the metal ring. The metal ring has the advantages that one metal ring has multiple functions, the original functions cannot be damaged, the position stopping function is added, the metal ring is multifunctional, the layout space is greatly saved, the structure is more compact, the manufacturing cost is reduced, and the product cost is further reduced. The metal ring bears force in the thickness direction, so that the strength is higher; the manufacturing process is simpler and the efficiency is higher. The metal ring also effectively prevents the plastic plug from being removed from the main body housing during the grounding shield. The application can cancel the stop structure at the tail part of the traditional shell, and the space occupied by the product is saved. This application is owing to cancelled casing afterbody backstop structure, guarantees to draw casing integrality to make the intensity of drawing the casing higher, waterproof performance is better. This application fast-assembling direction lug of further improvement compares with the tradition does not have fast direction lug, when the installation becket in the traditional mode, because between becket and the insulator in the assembling process because there is almost no clearance, consequently need spend more time to aim at the becket, and the speed that the becket moved to the mounted position is slow in the suit in-process. And this application owing to increased fast-assembling direction lug, fast-assembling direction lug has slant fast-assembling spigot surface, when the assembly, has reduced the alignment time and the degree of difficulty of becket, has greatly improved the speed that the becket adorned on insulator for the becket assembly is simple more high-efficient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of an embodiment of an electrical connector according to the present application.

Fig. 2 is a disassembled view of an embodiment of the electrical connector of the present application.

Fig. 3 is a schematic structural diagram of the plug-in unit of the electrical connector of the present application.

Fig. 4 is a schematic view of a metal ring structure of the electrical connector.

Fig. 5 is a schematic view of a terminal assembly of the electrical connector of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 3, the electrical connector of the present application includes a connector a, a drawing housing 10 sleeved outside the connector a, a waterproof ring 20 annularly disposed at a front end of the drawing housing 10, a housing 30 covered on the drawing housing 10, and a waterproof adhesive 40 disposed at a rear side in the cavity for sealing the connector a.

The extraction housing 10 comprises an annular housing wall 11 and a cavity 12 surrounded by the annular housing wall 11, the cavity 12 extending through the annular housing wall 11 in a front-to-back direction. The cross section of the cavity 12 is an approximately elliptical structure when viewed from front to back, and the cavity 12 is symmetrically arranged in the left-right direction and the up-down direction with respect to the connector a, that is, the electric connector can be inserted into a corresponding butting connector in the positive and negative directions. A baffle ring 13 is formed by extending the front end of the annular shell wall 11 outwards, and the waterproof ring 20 is annularly arranged at the front end of the annular shell wall 11 and abuts against the rear end face of the baffle ring 13. The waterproof ring 20 includes an annular body 21 surrounding the annular casing wall 11 and a water retaining ring 22 protruding outward from the outer peripheral surface of the annular body 21. In order to increase the waterproof effect, a plurality of water retaining rings 22 can be arranged at intervals along the axial direction of the annular body 21, and an annular waterproof trench 23 is formed between every two adjacent water retaining rings 22, so that even if one water retaining ring 22 close to the front end of the annular shell wall 11 does not have the water retaining effect, the waterproof trench 23 and the water retaining ring 22 at the rear end form multiple water retaining barriers, and the water mist is effectively prevented from entering.

The outer shell 30 may be spot welded to the annular shell wall 11 at the rear side of the waterproof ring 20. The casing 30 includes a first casing 31 covering the drawing casing 10 downward and a second casing 32 covering the drawing casing 10 upward and butted with the first casing 31. The first housing 31 includes an upper half cover portion covering the upper half portion of the annular housing wall 11, upper engaging lugs 311 formed to extend outward from both lateral sides of the upper half cover portion, and upper fixing holes 312 formed in the upper engaging lugs 311. The upper half cover portion has an inverted U-shaped cross section, and more specifically, includes an upper cover portion 313 transversely disposed on the upper surface of the drawer housing 10 and upper cover portions 314 formed by outwardly and downwardly curved lateral sides of the upper cover portion 313 and attached to upper halves of the lateral sides of the ring-shaped housing wall 11. The upper butt-joint lug 311 is formed by the upper cover part 314 extending horizontally outwards, and the rear end of the upper butt-joint lug 311 extends backwards and is bent downwards to form a welding pin 315. The upper cover portion 313 is provided with a first avoiding hole 316. The second casing 32 includes a lower half cover portion covering the lower half portion of the annular casing wall 11, lower butt-joint lug portions 321 formed by extending outward from two lateral sides of the lower half cover portion, and lower fixing holes 322 formed on the lower butt-joint lug portions 321, and in horizontal projection, the lower fixing holes 322 coincide with the upper fixing holes 312. The lower half cover portion has a U-shaped cross section, and more specifically, includes a lower cover portion 323 transversely disposed on the lower surface of the drawer housing 10 and a lower cover portion 324 formed by curving the lower cover portion 323 outwardly and upwardly at both lateral sides and attached to the lower half portion of the annular casing wall 11 at both lateral sides. The lower engaging lug portion 321 is formed by the lower cover portion 324 extending horizontally outward. The lower cover portion 323 is provided with a second avoiding hole 325. When the housing 30 is assembled, the upper half cover portion of the first housing 31 and the upper half portion of the annular housing wall 11 are welded together, then the second housing 32 is aligned with the first housing 31 and welded together with the lower half portion of the annular housing wall 11, and the fixing holes 312 of the first housing 31 and the second housing 32 are overlapped and fixed on the object to be fixed through the fixing screws. The addition of the casing 30 allows the soldering pins 315 to be disposed on the casing 30, so that the integrity of the drawing casing 10 is not damaged, and the waterproof effect of the drawing casing 10 is increased. It is understood that in some embodiments, the shape and structure of the drawing housing 10 may not be limited to the shape and structure described above.

The plug connector A is inserted into the cavity 12 from back to front. The plug connector a includes an insulating body 50 and a terminal assembly 60 integrally formed with the insulating body 50.

The insulating body 50 includes a mating tongue 51, a step 52 formed to extend rearward from the mating tongue 51, and a base 53 formed at the rear side of the step 52. A metal ring 70 is disposed around the stepped portion 52, and the metal ring 70 is in contact with the drawing casing 10 and welded together (welded together with the inner wall surface of the annular casing wall 11 by spot welding). The metal ring 70 is formed by stamping, bending and riveting metal plates. The front and rear ends of the metal ring 70 are respectively provided with a forward stop structure 71 and a backward stop structure 72 for preventing the plug connector A from moving forward and backward.

With continued reference to fig. 4, the forward stop structure 71 and/or the rearward stop structure 72 are formed by tearing the front and/or rear ends of the metal ring 70 downward to form a forward stop and/or a rearward stop. Specifically, the forward stop structure 71 includes two first forward stop blocks formed at the front end of the upper wall 701 of the metal ring 70, and two second forward stop blocks symmetrically formed at the front end of the lower wall 702 of the metal ring 70. In a matching manner, two first forward limiting steps are arranged at positions on the stepped portion 52 corresponding to the first forward stop blocks, and two second forward limiting steps are arranged at positions corresponding to the second forward stop blocks. The two first forward stop blocks each include a first protrusion 711 protruding from the upper wall 701 in the lateral direction downward and a first downward tearing portion 712 formed by extending obliquely upward from both lateral ends of the first protrusion 711 to both lateral sides, and a first broken surface 703 is formed on an end surface of the upper wall 701 located at the rear side of the first protrusion 711. The lower convex surface of the first protrusion 711 may be located at any position between the tread of the corresponding first limiting step and the upper surface of the step 52. Preferably, the lower convex surface of the first protrusion 711 just contacts with the tread of the corresponding first limiting step. The two second forward stop blocks comprise a second lug 711 'protruding from the lower wall 702 in the transverse direction and a first upward tearing part 712' formed by extending obliquely downward from both ends of the second lug 711 'in the transverse direction to both sides in the transverse direction, and a second broken surface 704 is formed on an end surface of the lower wall 702 located at the rear side of the second lug 711'. The upper convex surface of the second protrusion 711' may be located at any position between the tread of the corresponding second limiting step and the lower surface of the step portion 52. Preferably, the upper convex surface of the second protrusion 711' is just in contact with the tread of the corresponding second limiting step. The backward stopping structure comprises a first backward stopping block formed at the back end of the upper wall 701 of the metal ring 70 and a second backward stopping block formed at the back end of the lower wall 702 of the metal ring 70, wherein the first backward stopping block is close to one lateral side of the metal ring 70, and the second backward stopping block is close to the other lateral side of the metal ring 70. In an optional scheme, matched with the first rear limiting step, a first rear limiting step is arranged on the step part 52 at a position corresponding to the first rear stopping block, and a second rear limiting step is arranged at a position corresponding to the second rear stopping block. The first rear stop block comprises a first inclined bump 721 inclined downwards towards the other lateral side of the metal ring 70 and a second downward tearing portion 722 integrally formed between the first inclined bump 721 and the rear end of the upper wall 701 of the metal ring 70, the end surface of the upper wall 701 at the front side position of the first inclined bump 721 and the second downward tearing portion 722 forms a third broken surface, a semi-arc-shaped first engaging surface 723 is formed between the third broken surface and the second downward tearing portion 722, and the third broken surface and the front side surface of the first rear stop block have a predetermined breaking interval space 724. In this embodiment, the rear side surfaces of the first inclined protrusion 721 and the second downward tearing portion 722 are located on the same plane as the rear end surface of the metal ring, and the front side surfaces of the first inclined protrusion 721 and the second downward scattering portion abut against the kick surface of the first backward limiting step. The second rearward stop block includes a second inclined protrusion 721 'inclined obliquely upward toward the lateral direction of the metal ring 70 and a second upward tearing portion 722' integrally formed between the second inclined protrusion 721 'and the rear end of the lower wall 702 of the metal ring 70, an end surface of the lower wall 702 at a front position of the second inclined protrusion 721' and the second upward tearing portion 722 'forms a fourth broken surface, a second engagement surface 723' in a semi-circular arc shape is formed between the fourth broken surface and the second upward tearing portion 722 ', and the fourth broken surface and the front side surface of the second rearward stop block have a predetermined breaking space 724'. In this scheme, the rear side surfaces of the second inclined protrusion 721 'and the second upper tearing portion 722' and the rear end surface of the metal ring are located on the same plane, and the front side surfaces of the second inclined protrusion 721 'and the second upper tearing portion 722' abut against the kick surface of the second rear limiting step.

In other alternatives, the step 52 may not be provided with the first and second backward limit steps. In this embodiment, the front side surfaces of the first and second rear stop blocks abut against the rear end surface of the step portion 52, so that the plug connector a is prevented from moving backward.

It can be understood that, in some embodiments, the free ends (i.e. the ends far away from the metal ring 70) of the oblique protrusions of the first and second backward limiting protrusions can be further connected with the back end of the metal ring through a reinforcement portion, so as to further enhance the strength of the first and second backward limiting protrusions and improve the stability.

It is understood that in other embodiments, the forward and rearward stop structures 71 and 72 can be formed by extending or protruding downward from the front and rear ends of the metal ring 70 to form forward and rearward stop protrusions, respectively. It will be appreciated that, in some embodiments, a metal member with a similar structure may be used instead of the metal ring 70, for example, an upper and a lower sheet-shaped metal structure may be used to be disposed on the step portion 52.

Since the thickness of the stepped portion 52 is larger than that of the mating tongue portion 51, the stepped portion 52 may be a thickened portion which is provided coaxially and integrally with the mating tongue portion 51. In a horizontal projection perpendicular to the plugging direction, the step 52 has an outer edge portion that extends beyond the mating tongue 51. In this embodiment, the base 53 and the integrated abutting tongue 51 and the step 52 are in a split structure, and a separating space 54 is provided between the base 53 and the step 52, that is, the base 53 and the step 52 are completely separated. This has the advantage that the waterproof glue 40 is located at the break-away partition 54 and adheres to the inner side wall of the annular housing wall 11.

A forward stop step 521 is arranged at a position, corresponding to the forward stop structure 71, at the front end of the stepped portion 52, and the forward stop step 521 penetrates through the stepped portion 52 from one surface and the front end surface, adjacent to the drawing shell 10, of the stepped portion 52 to communicate with the outside; optionally, a rear end of the stepped portion 52 corresponding to the rear stop structure 72 is provided with a rear stop step (not shown), and the rear stop step penetrates the stepped portion 52 from one surface of the stepped portion 52 adjacent to the drawing shell 10 and a rear end surface thereof to communicate with the outside; the forward and rearward stop structures 71 and 72 are formed by extending downward from the front and rear ends of the metal ring 70, respectively.

Preferably, a quick-assembling guide protrusion 522 is disposed on a surface of the stepped portion 52 adjacent to the drawing casing 10, and the quick-assembling guide protrusion 522 has an upper convex surface 523 parallel to a surface of the stepped portion 52 adjacent to the drawing casing 10, and a guide slope surface 524 formed by the upper convex surface 523 extending obliquely forward and downward and/or extending obliquely rearward and downward. The quick-fit guide projections 522 are provided in plural numbers, and they are provided at intervals along the outer peripheral surface of the step portion 52. Further preferably, the fast-assembling guide projections 522 are disposed at positions of the front and rear limiting steps in a one-to-one correspondence manner, and the guide slope 524 of the fast-assembling guide projections 522 is aligned with the corresponding limiting steps, that is, the kick surface of the corresponding limiting step and the guide slope 524 form a bent whole. In a matching manner, the broken surface of the metal ring 70 corresponding to the guide slope 524 may further form an auxiliary limiting portion 73 attached to the guide slope 524. Can further strengthen so right plug connector A's limiting displacement makes the degree of cooperation, compactness between each part better simultaneously, and the structure is more firm stable.

With reference to fig. 5, the terminal assembly 60 includes an upper row of terminals 61, a lower row of terminals 62 and a middle plate 63 sandwiched between the upper row of terminals 61 and the lower row of terminals 62, which are integrally formed with the insulating body 50, wherein each of the upper row of terminals 61 and the lower row of terminals 62 includes a plurality of conductive terminals. Each conductive terminal includes a buried portion 64 buried in the insulating body 50, a mating portion 65 extending forward from the buried portion 64 and exposed to the upper and lower surfaces of the mating tongue 51, and a solder tail 66 extending backward from the buried portion 64 and outside the insulating body 50. Specifically, the solder tail 66 passes through the step portion 52, the break spacer portion 54 and the base portion 53 in sequence from the embedded portion 64 to the rear (i.e., the base portion 53 and the step portion 52 are connected together through the terminal assembly 60, and the break spacer portion 54 is at least partially surrounded by the drawing housing 10), so as to be exposed to the rear side of the base portion 53. When the waterproof adhesive 40 is filled, the waterproof adhesive 40 tightly wraps each conductive terminal located at the disconnection spacer 54, so that the gap between the terminal assembly 60, the insulation body 50 and the inner surface of the drawing housing 10 is adhered to be waterproof.

The upper row terminal 61 and the lower row terminal 62 are each stamped from a metal sheet. The terminal assemblies 60 are arranged in such a way that their holding portions are located at the same horizontal position and their solder tails 66 are aligned at the same horizontal position regardless of the upper row 61 or the lower row 62 of terminals. The mating portion 65 of the upper row of terminals 61 is located at the same horizontal position, and the mating portion 65 of the lower row of terminals 62 is located at another same horizontal position.

The conductive terminals of the upper row of terminals 61 correspond to the conductive terminals of the lower row of terminals 62 one by one, and each of the conductive terminals includes a pair of ground terminals, a pair of power terminals and signal terminals located between the pair of ground terminals, and may further include a high-frequency signal terminal located between the power terminal and the ground terminal. The pair of ground terminals are formed at both lateral sides of the insulating body 50, the pair of power terminals are formed in the insulating body 50 and located inside the pair of ground terminals, respectively, and the pair of signal terminals are formed in the insulating body 50 and located inside the pair of power terminals, respectively.

Furthermore, the middle plate 63 includes a first middle plate 631 disposed between the ground terminals on one lateral outer side of the upper row of terminals 61 and the lower row of terminals 62 and a second middle plate 632 disposed between the ground terminals on the other lateral outer side of the upper row of terminals 61 and the lower row of terminals 62, the first middle plate 631 and the second middle plate 632 are located at the same horizontal position, and the first middle plate 631 and the second middle plate 632 are respectively located between the abutting portions 65 of the two corresponding ground terminals. The first middle plate 631 and the second middle plate 632 each have a fastening portion 633 exposed to the lateral outer side of the insulation body 50, and the fastening portions 633 are fastened with the corresponding mating connector.

During assembly, a semi-finished product of the metal ring 70 (the semi-finished product refers to the metal ring 70 when the backward stop structure 72 of the metal ring 70 is not formed yet) is sleeved on the step part 52 from front to back, and then the backward stop structure 72 is formed by punching; and inserting the plug connector A provided with the metal ring 70 into the drawing shell 10, welding the drawing shell 10 and the metal ring 70, and passing through the first avoidance hole 316 and the second avoidance hole 325 to weld the metal ring 70 and the drawing shell 10 together during welding.

In summary, compared with the conventional electrical connector, the electrical connector of the present application has an ingenious concept in that the structure of the original metal ring 70 is improved, and the front stopping structure 71 and the rear stopping structure 72 are integrally formed at the front end and the rear end of the metal ring 70 by utilizing the thickness of the metal ring 70. The metal ring 70 has the advantages that the metal ring has multiple functions, the original functions cannot be damaged, the position stopping function is added, the metal ring is multifunctional, the layout space is greatly saved, the structure is more compact, the manufacturing cost is reduced, and the product cost is further reduced. The metal ring 70 bears force in the thickness direction, so that the strength is higher; the manufacturing process is simpler and the efficiency is higher. So that the metal ring 70 also effectively prevents the plastic plug a from coming out of the main body case 30 at the time of grounding shield. The application can cancel the stop structure at the tail part of the traditional shell, and the space occupied by the product is saved. This application is owing to cancelled casing afterbody backstop structure, guarantees to draw casing 10 integrality to make the intensity of drawing casing 10 higher, waterproof performance is better. Compared with the conventional non-quick guide projection, the quick guide projection 522 of the present application is further improved in that, when the metal ring 70 is mounted in the conventional manner, much time is required to align the metal ring 70 due to almost no gap between the metal ring 70 and the insulation body 50 during the assembling process, and the speed of moving the metal ring 70 to the assembling position during the sleeving process is slow. Due to the fact that the fast-assembly guide protruding blocks 522 are additionally arranged and are provided with oblique fast-assembly guide surfaces, during assembly, alignment time and difficulty of the metal ring 70 are reduced, the speed of installing the metal ring 70 on the insulation body 50 is greatly improved, and the metal ring 70 is enabled to be assembled more simply and efficiently.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

The above examples only express preferred embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides an electric connector, runs through the pump housing that is formed with the cavity, locates plug connector in the cavity and fixing in pump housing outer shell, the plug connector include insulator and with the terminal subassembly of insulator shaping as an organic whole, insulator includes the butt joint tongue and certainly step portion that the extension formed after the butt joint tongue, its characterized in that: still including being fixed in metalwork on the step portion, the metalwork with draw the casing contact and welding together, the metalwork is preceding, the rear end is equipped with respectively and prevents the forward only bit architecture and the backward only bit architecture of forward, backward removal of plug connector.

2. The electrical connector of claim 1, wherein: the metal piece is of an annular structure and is annularly arranged on the periphery of the step part, and the metal rings are formed by stamping, bending and riveting metal plates.

3. The electrical connector of claim 2, wherein: the thickness of the step part is greater than that of the butt joint tongue part, a forward stop step is arranged at the position, corresponding to the forward stop structure, of the front end of the step part, and the forward stop step penetrates through the step part from one surface and the front end surface, adjacent to the drawing shell, of the step part to be communicated with the outside; a rear stopping step is arranged at the position, corresponding to the rear stopping structure, of the rear end of the step part, and penetrates through the step part from one surface, adjacent to the drawing shell, of the step part and the rear end surface of the step part to be communicated with the outside; the forward stopping structure and the backward stopping structure are respectively formed by the downward extension of the front end and the rear end of the metal ring or the downward tearing of the front end and the rear end of the metal ring.

4. The electrical connector of claim 3, wherein: the quick-assembly guide lug is arranged on the step part and adjacent to one surface of the drawing shell, and is provided with an upper convex surface parallel to the step part and adjacent to one surface of the drawing shell and a guide slope surface formed by downward inclined extension in front of the upper convex surface and/or downward inclined extension behind the upper convex surface.

5. The electrical connector of claim 1, wherein: the insulation body further comprises a base independent of the rear of the step part, a disconnection interval part is arranged between the base and the step part, the base and the step part are connected together through the terminal assembly, the disconnection interval part is at least partially surrounded by the drawing shell, waterproof glue is injected into the disconnection interval part, and the waterproof glue is used for bonding gaps among the terminal assembly, the insulation body and the inner surface of the drawing shell to achieve water proofing.

6. The electrical connector of any one of claims 1 to 5, wherein: the terminal assembly comprises an upper row terminal, a lower row terminal and a middle plate, wherein the upper row terminal and the lower row terminal are integrally formed with the insulating body, the middle plate is clamped between the upper row terminal and the lower row terminal, the upper row terminal and the lower row terminal respectively comprise a plurality of conductive terminals, each conductive terminal comprises a buried holding part buried in the insulating body, a butt joint part extending forwards from the buried holding part and exposed on the upper surface and the lower surface of the butt joint tongue part, and a welding pin extending out of the insulating body from the buried holding part.

7. The electrical connector of claim 6, wherein: the middle plate comprises a first middle plate arranged between two conductive terminals on one lateral outer side of the upper row of terminals and the lower row of terminals and a second middle plate arranged between two conductive terminals on the other lateral outer side of the upper row of terminals and the lower row of terminals, and the first middle plate and the second middle plate are respectively positioned between the butt joint parts of the two corresponding conductive terminals.

8. The electrical connector of claim 7, wherein: the first middle plate and the second middle plate are provided with buckling parts exposed on the transverse outer side of the insulating body.

9. The electrical connector of claim 1, wherein: the front end ring of the drawing shell is provided with a waterproof ring, the front end of the drawing shell extends outwards to form a baffle ring, and the front end of the waterproof ring is abutted against the rear end face of the baffle ring.

10. The electrical connector of claim 1, wherein: the shell comprises a first shell covering the drawing shell downwards and a second shell covering the drawing shell upwards and butted with the first shell, the first shell and the second shell respectively comprise cover parts welded with the upper surface and the lower surface of the drawing shell, butt joint lug parts formed by transversely extending the cover parts and fixing holes formed in the butt joint lug parts, and welding pins protrude downwards from the first shell and/or the second shell.

Images