CN214411635U - Electric socket - Google Patents

Abstract

The utility model provides an electric mortiser socket, runs through the drawing casing that is formed with the cavity around including, through preceding stop structure and backward stop the structure spacing in plug connector and the fixing in outside the drawing casing in the cavity, the plug connector include insulator and with insulator shaping terminal subassembly as an organic whole, insulator includes the butt joint tongue and certainly step portion that the butt joint tongue backward extension formed, still including encircle locate on the step portion and with draw the casing contact and the welded becket together, the becket adopts sheet metal punching press to bend the shaping back riveting together, preceding stop the structure locate the front end of metalwork and support in the front end portion of step portion. The metal ring of this application electric mortiser socket has multiple functions, not only can not destroy original function, has still increased to the function of ending a position, has greatly practiced thrift the overall arrangement space for the festival constructs compacter, and reduces manufacturing cost, further reduces product cost.

Description

Electric socket

Technical Field

The present application relates to an electrical receptacle.

Background

Type C Type electricity socket is the USB interface that supports positive and negative electricity and inserts, and it has promoted powerful data transmission ability and power transmission ability, is a general interface standard who is widely acknowledged and adopted by international society simultaneously, just replaces traditional Micro USB interface comprehensively. Type C Type electric mortiser socket 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 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 last becket of insulator, it is right to be provided with on the casing before the plug connector ends the position structure before, after, to end the position, should be before, after to end the position structure and tear the shaping on the casing usually, processing technology is complicated. The stop structure can stop the front and the rear 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.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an electrical receptacle that is not damaged, can be implemented without adding parts, is versatile, and is cost effective.

For solving above-mentioned technical problem, the application provides an electric mortiser socket, run through the drawing casing that is formed with the cavity around including, through preceding to end the bit architecture and to end the bit architecture spacing in plug connector and holding in the cavity draw the outer shell of casing, 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 the step portion that forms is extended to the butt joint tongue, electric mortiser connector still including the ring locate on the step portion and with draw the metal ring that the casing contacted and welded together, the metal ring adopts sheet metal punching press to bend the shaping back riveting together, preceding bit architecture is located the front end of metal ring and support in the front end portion of step portion.

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; the forward stop structure is abutted against the kicking surface of the forward stop step.

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 drawing shell is sleeved outside the butt-joint tongue part and the stepped part, the base part is positioned at the rear side of the drawing shell, the shell is provided with a tail cover part which exceeds the rear end of the drawing shell to cover the base part, and the backward stopping structure is arranged at the rear end of the tail cover part and abuts against the rear end part of the base part.

Furthermore, a rear stopping step is arranged at the position, corresponding to the rear stopping structure, of the rear end of the base, and the rear stopping step penetrates through the base from one surface, adjacent to the shell, of the base to be communicated with the outside; the backward stopping structure is propped against the kicking surface of the backward stopping step.

Furthermore, the shell comprises a main shell which is sleeved outside the drawing shell in a ring mode and is located on the same plane with the rear end of the main shell, and a tail cover portion which is formed by extending backwards from the upper half portion of the main shell, and welding pins are arranged on two transverse sides of the main shell in a downward protruding mode.

Furthermore, a waterproof ring is arranged on the front end ring of the drawing shell, and the rear end face of the waterproof ring is abutted against the front end face of the shell.

Furthermore, the waterproof ring is provided with a first water retaining surface protruding outwards, a second water retaining surface formed by extending from the front of the first water retaining surface in an inward inclined manner and a second water retaining surface formed by extending from the rear of the first water retaining surface in an inward inclined manner, and the annular outer diameters formed by the first water retaining surface, the second water retaining surface and the third water retaining surface are all larger than the outer diameter of the drawing shell; or

The waterproof ring comprises an annular body sleeved outside the annular shell wall, a plurality of water retaining rings are arranged on the periphery of the annular body at intervals along the axial direction of the annular body, and an annular waterproof ditch is formed between every two adjacent water retaining rings.

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.

Compared with the existing electric socket, the electric socket has the ingenious design that the structure of the original metal ring is improved, and the forward stop structure is integrally formed at the front 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 forward 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. This application cancels traditional casing afterbody to backstop structure, changes into and sets up at the shell rear end to backstop structure, does not break the slope and draws the integrality of casing 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. Due to the fact that the fast-assembly guide protruding blocks are additionally arranged and are provided with the inclined fast-assembly guide surfaces, during assembly, aligning time and difficulty of the metal ring are reduced, the speed of installing the metal ring 70 on the insulating body is greatly improved, and the metal ring is enabled to be assembled more simply and efficiently.

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 one embodiment of the electrical receptacle of the present application.

Figure 2 is an exploded view of one embodiment of the electrical receptacle of the present application.

Fig. 3 is a schematic view of a waterproof ring according to an embodiment of the electrical receptacle of the present application.

FIG. 4 is a schematic view of the plug member of an embodiment of the electrical receptacle of the present application.

FIG. 5 is a schematic view of a terminal assembly according to one embodiment of the present invention.

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 receptacle of the present application includes a plug connector a, a drawing housing 10 sleeved outside the plug connector a, a waterproof ring 20 annularly disposed at a front end of the drawing housing 10, a housing 30 covering the drawing housing 10, and a waterproof adhesive 40 disposed at an inner rear side of a cavity 12 of the drawing housing 10 for sealing the plug 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. When viewed from the front and the back, the cross section of the cavity 12 is of an approximately elliptical structure, and the cavity 12 is symmetrically arranged in the left-right direction and the up-down direction with respect to the plug connector a, that is, the electric socket can be inserted by a corresponding butting connector in the positive and negative directions.

The cross section of the waterproof ring 20 is of an approximately triangular or trapezoidal structure, and the waterproof ring is provided with a convex first water retaining surface 201, a second water retaining surface 202 formed by obliquely extending from the front to the inside of the first water retaining surface 201, and a third water retaining surface 203 formed by obliquely extending from the back to the inside of the first water retaining surface 201. The first water retaining surface 201, the second water retaining surface 202 and the third water retaining surface 203 form an annular outer diameter which is larger than the outer diameter of the drawing shell 10.

In some embodiments, the front end of the annular casing wall 11 may further extend outward to form a baffle ring (not shown), and the waterproof ring 20 is disposed around the front end of the annular casing wall 11 and abuts against the rear end face of the baffle ring. The waterproof ring 20 may also be constructed to include an annular body 21 fitted around the annular casing wall 11 and a water retaining ring 22 protruding outward from the outer circumferential 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 main casing 31 sleeved outside the drawing casing 10 and located on the same plane with the rear end of the main casing 31, and the tail cover part 32 formed by extending backward from the upper half of the main casing 31. The main housing 31 includes an annular main housing wall 311 and a receiving cavity 312 surrounded by the annular main housing wall 311 and used for receiving the pumping housing 10, the receiving cavity 312 penetrates the annular main housing wall 311 in a front-back direction, and the upper and lower surfaces of the annular main housing wall 311 are respectively welded to the pumping housing 10. The front end surface of the annular main casing wall 311 abuts against the waterproof ring 20, and the rear end surface is flush with the rear end surface of the drawing casing 10. Welding pins 313 protrude downward from both lateral sides of the annular main housing wall 311, and the welding pins 313 may be formed by tearing both lateral sides of the annular main housing wall 311.

The tail cover portion 32 is formed by integrally extending rearward an upper half portion of the annular main casing wall 311. The tail cover portion 32 is shaped like a semicircular arc, and includes an upper cover portion 321 located at the same level as the annular main housing wall 311, and two side cover portions 322 formed by bending the upper cover portion 321 from both lateral sides to the lower and outer sides. Two backward stopper structures 323, which may be lower protruding structures formed by punching or tearing the back end of the upper cover portion 321 downward, or protruding structures formed by protruding the inner surface of the upper cover portion 321, are formed at the back end of the upper cover portion 321. The two backward stop structures 323 abut against the rear end surface of the plug connector A to prevent the plug connector A from moving backward. In this scheme, because the backward stop structure 323 is disposed on the casing 30, the drawing casing 10 is not damaged, the integrity of the drawing casing 10 is ensured, and the waterproof effect is further increased.

In some embodiments, the tail cover portion 32 may also be a ring-shaped structure formed by integrally extending backward from the ring-shaped main casing wall 311. The rear stop structure 323 is not limited to the above arrangement, and any structure may be used as long as the rear stop structure 323 can abut against the rear end surface of the plug connector a.

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 end of the metal ring 70 is provided with a plurality of forward stop structures 71 for preventing the plug connector a from moving forward, and the forward stop structures 71 are used for abutting against the front end of the step part 52, so as to prevent the plug connector a from moving forward. In this embodiment, the forward stop structure 71 is a forward stop block formed by tearing the front end of the metal ring 70 downward. In some embodiments, the forward stop structure 71 may be a forward stop projection formed by extending or protruding downward from the front end of the metal ring 70. 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 metal structure may be disposed on the step portion 52, and so on.

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. The step 52, the butt tongue 51 and the waterproof glue are completely accommodated in the cavity 12 of the annular housing wall 11. A plurality of forward stopping steps 521 are arranged at the front end of the stepped part 52 corresponding to the forward stopping structure 71, each forward stopping step 521 penetrates through the stepped part 52 from one surface and the front end surface of the stepped part 52 adjacent to the drawing shell 10 to be communicated with the outside, and the forward stopping structure 71 abuts against the kicking surface of the forward stopping step.

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 on the step portion 52 at intervals along the outer peripheral surface of the step portion 52. Further preferably, the fast-assembling guide projection 522 is disposed at a position of the forward stop step in a one-to-one correspondence manner, and the guide slope 524 of the fast-assembling guide projection 522 is aligned with the corresponding forward stop step, that is, the kick surface of the corresponding stop step and the guide slope 524 form a bent whole. In a matching manner, an auxiliary limiting portion 73 attached to the guide rupture surface may be further formed at a portion of the metal ring 70 corresponding to the rupture surface at the rupture position. 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.

The base 53 and the integrated abutting tongue 51 and step 52 are in a split structure, and a breaking distance 54 is formed between the base 53 and the step 52, that is, the base 53 and the step 52 are completely disconnected. 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.

Further, the base 53 is exposed to the rear side of the cavity 11, and the tail cover portion 32 of the housing 30 covers the base 53, so as to cover the upper half of the base 53. The bottom surface of the base 53 is provided with two support legs 531, the rear end of the base 53 is provided with a rear stop step 532 matched with the rear stop structure 323, the rear stop step 532 penetrates through the base 53 from one surface and the rear end surface of the base 53 adjacent to the shell 30 to communicate with the outside, and the rear stop structure 323 abuts against the kicking surface of the rear stop step 532. More specifically, the lateral dimension of the rearward stop step 532 is matched to the two rearward stop structures 323 to sufficiently accommodate the two rearward stop structures 323, thereby ensuring that the two rearward stop structures 323 abut against the kick surface of the rearward stop step 532. A groove 533 which penetrates through the kick surface from front to back is formed in the middle of the kick surface of the backward stop step 532.

With reference to fig. 4 and 5, the terminal assembly 60 includes an upper row of terminals 61 and a lower row of terminals 62 integrally formed with the insulating body 50, and a middle plate 63 sandwiched between the upper row of terminals 61 and the lower row of terminals 62, where the upper row of terminals 61 and the lower row of terminals 62 each include 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, the metal ring 70 is sleeved on the step part 52 from front to back, and the forward stopping structure is abutted against the kick surface of the forward stopping step; and then inserting the plug connector A sleeved with the metal ring 70 into the drawing shell 10, and welding the drawing shell 10 and the metal ring 70. When assembling the outer shell 30, the rearward stop structure 323 at the position of the tail cover part 32 is engaged with the rearward stop step 532, the rearward stop structure 323 abuts against the kick surface of the rearward stop step 532, and then the outer shell 30 and the drawer housing 10 are welded together.

In summary, compared with the existing electrical socket, the electrical socket of the present application has an ingenious concept in that the structure of the original metal ring 70 is improved, and the forward stop structure is integrally formed at the front 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 forward stop 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. This application cancels traditional casing afterbody's backward backstop structure, changes into and sets up at the shell 30 rear end backward backstop structure, does not break slope and draws the integrality of casing 10 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 mortiser socket, runs through the drawing casing that is formed with the cavity around including, through preceding end bit architecture and backward end bit architecture spacing in plug connector in the cavity and holding in draw the outer shell of casing, the plug connector include insulator and with insulator shaping terminal subassembly as an organic whole, insulator includes the butt joint tongue and certainly the step portion that forms, its characterized in that extend behind the butt joint tongue: the drawing shell is arranged on the step part, the drawing shell is in contact with the drawing shell, the drawing shell is welded on the drawing shell, the metal rings are formed by punching, bending and riveting metal plates, and the forward stopping structure is arranged at the front end of the metal rings and abuts against the front end part of the step part.

2. The electrical receptacle of claim 1, 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; the forward stop structure is abutted against the kicking surface of the forward stop step.

3. The electrical receptacle of claim 2, 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.

4. The electrical receptacle 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.

5. The electrical receptacle of claim 4, wherein: the drawing shell is sleeved outside the butt joint tongue part and the stepped part, the base part is positioned at the rear side of the drawing shell, the shell is provided with a tail cover part which exceeds the rear end of the drawing shell to cover the base part, and the backward stopping structure is arranged at the rear end of the tail cover part and abuts against the rear end part of the base part.

6. The electrical receptacle of claim 5, wherein: a rear stopping step is arranged at the position, corresponding to the rear stopping structure, of the rear end of the base, and the rear stopping step penetrates through the base from one surface, adjacent to the shell, of the base to be communicated with the outside; the backward stopping structure is propped against the kicking surface of the backward stopping step.

7. The electrical receptacle of claim 5, wherein: the shell comprises a main shell and a tail cover part, wherein the main shell is sleeved outside the drawing shell in a ring mode and is located on the same plane with the rear end of the drawing shell, the tail cover part extends backwards from the upper half part of the main shell, and welding pins protrude downwards from the two transverse sides of the main shell.

8. The electrical receptacle of claim 1, wherein: the front end ring of the drawing shell is provided with a waterproof ring, and the rear end face of the waterproof ring is abutted against the front end face of the shell.

9. The electrical receptacle of claim 8, wherein: the waterproof ring is provided with a first water retaining surface protruding outwards, a second water retaining surface formed by inwards obliquely extending from the front of the first water retaining surface and a second water retaining surface formed by inwards obliquely extending from the back of the first water retaining surface, and the annular outer diameters formed by the first water retaining surface, the second water retaining surface and the third water retaining surface are all larger than the outer diameter of the drawing shell; or

The waterproof ring comprises an annular body sleeved outside the annular shell wall, a plurality of water retaining rings are arranged on the periphery of the annular body at intervals along the axial direction of the annular body, and an annular waterproof ditch is formed between every two adjacent water retaining rings.

10. Electrical plug receptacle according to any one of claims 1 to 9, characterized in that: 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.

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