CN219018008U

CN219018008U - Watertight connector

Info

Publication number: CN219018008U
Application number: CN202223197405.8U
Authority: CN
Inventors: 杜光乾; 谭旭升; 代毅
Original assignee: Shenzhen Ketong Engineering Technology Co ltd
Current assignee: Shenzhen Ketong Engineering Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-12
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a watertight connector which comprises a socket and a plug, wherein the plug is connected with the socket, a needle core penetrates through a sealing groove and is inserted into the hole core, a first step surface is abutted against a second step surface, one side surface of a first connecting seat facing the plug is abutted against one side surface of a second connecting seat facing the socket, and one side surface of a socket shell facing the first connecting seat is abutted against one side surface of a plug shell facing away from the second connecting seat. According to the technical scheme, multiple sealing between the socket and the plug is realized through triple sealing, and the sealing performance of the watertight connector is improved.

Description

Watertight connector

Technical Field

The utility model relates to the technical field of connectors for underwater use, in particular to a watertight connector.

Background

Along with the wider and wider application of the underwater robots and the underwater autopilots, the requirements on the reliability of connectors for underwater use are higher and higher.

The watertight connector is one of the more commonly used connectors for underwater use, but in the existing watertight connector, most of the watertight connector only has the problem that the socket shell at the periphery of the socket is in abutting sealing with the plug shell at the periphery of the plug when the socket is connected with the plug, the internal structure between the socket and the plug is not sealed, and the tightness is insufficient.

Disclosure of Invention

The utility model mainly aims to provide a watertight connector, which aims to perform multiple sealing between a socket and a plug and improve the sealing performance of the watertight connector.

To achieve the above object, the present utility model provides a watertight connector comprising:

the socket comprises a needle core assembly and a socket shell, wherein the socket shell is sleeved on the periphery of the needle core assembly, the needle core assembly comprises a first connecting seat and a plurality of needle cores, a plurality of sealing sleeves are convexly arranged at one end, far away from the equipment, of the first connecting seat, one needle core is inserted into the first connecting seat and penetrates through one sealing sleeve, and the end part of the sealing sleeve is connected with the peripheral wall of the needle core to form a first step surface; and

the plug comprises a hole core assembly and a plug shell, wherein the plug shell is sleeved on the periphery of the hole core assembly, the hole core assembly comprises a second connecting seat and a plurality of hole cores, a plurality of sealing grooves are concavely formed in one end, far away from the cable, of the second connecting seat, one hole core is inserted into the second connecting seat and communicated with one sealing groove, and a second step surface is formed on the inner peripheral wall of the sealing groove in a protruding mode;

the plug is connected with the socket, the needle core penetrates through the sealing groove and is inserted into the hole core, the first step surface is abutted against the second step surface, the first connecting seat faces towards one side surface of the plug, the second connecting seat faces towards one side surface of the socket, and the socket shell faces towards one side surface of the first connecting seat and is abutted against one side surface of the plug shell, which faces away from the second connecting seat.

Optionally, the plug includes the sealing washer, the sealing washer snare is located the outer periphery of plug shell, the plug shell inserts when locating the socket shell, the sealing washer butt in the inner peripheral wall of socket shell.

Optionally, the first connecting seat includes that the needle core compresses tightly piece, needle core insulator and needle core seal body, the needle core compresses tightly piece, needle core insulator with the needle core seal body loops through the fastener and connects, the seal cover is protruding to be located the needle core seal body deviates from the surface of one side of needle core insulator, the needle core passes in proper order needle core compresses tightly piece, needle core insulator with the needle core seal body, and wears to locate the seal cover.

Optionally, the needle core sealing body includes first equipment portion and locates with protruding the first connecting portion of first equipment portion periphery, first connecting portion is connected with the needle core insulator, the socket shell is the barrel, the socket shell cup joint in first equipment portion, the interior perisporium of socket shell with the perisporium interference fit of first equipment portion.

Optionally, the first connecting seat further includes a first sealing member, and the first sealing member is sleeved on the outer periphery of the assembly portion and abuts against the inner peripheral wall of the socket housing.

Optionally, the first connecting seat further comprises a second sealing element, and the second sealing element is sleeved on the outer surface of the needle core and is abutted to the inner wall of the needle core insulator.

Optionally, the second connecting seat includes hole core compressing member, hole core insulator and hole core sealing body hole, hole core compressing member the hole core insulator with hole core compressing member loops through the fastener and connects, the seal groove set up in hole core sealing body deviates from hole core insulator's one side surface, and extends to hole core insulator, the hole core wears to locate in proper order hole core compressing member hole core insulator with hole core compressing member, and wear to locate in the seal groove.

Optionally, the hole core sealing body comprises a second assembling part and a second connecting part protruding from the outer periphery of the second assembling part, the second connecting part is connected with the hole core insulator, the plug shell is a cylinder body, the plug shell is sleeved on the second assembling part, and the inner peripheral wall of the plug shell is in interference fit with the outer peripheral wall of the second assembling part.

Optionally, the second connecting seat further comprises a third sealing element, and the third sealing element is sleeved on the outer periphery of the hole core sealing body and is abutted against the inner peripheral wall of the plug housing;

and/or, the second connecting seat further comprises a fourth sealing piece, and the fourth sealing piece is sleeved on the outer surface of the hole core and is abutted to the inner wall of the hole core insulator.

Optionally, the watertight connector further comprises a tail shell assembly, the tail shell assembly comprises a tail shell, an air pipe, a pressing piece and a fifth sealing piece, one end of the tail shell is sleeved on the plug shell, the other end of the tail shell is sleeved on the cable, one end of the air pipe is sleeved on the other end of the tail shell, the pressing piece is sleeved on the position, corresponding to the tail shell, outside the air pipe, of the tail shell, and the fifth sealing piece is arranged between the tail shell and the cable.

According to the technical scheme, a first step surface formed by connecting the end part of the sealing sleeve with the outer peripheral wall of the needle core is abutted with a second step surface formed by protruding the inner peripheral wall of the sealing groove, so that a first resealing is formed; the surface of one side of the first connecting seat facing the plug is abutted with the surface of one side of the second connecting seat facing the socket, so that a second resealing is formed; the socket shell faces to one side surface of the first connecting seat to be abutted with one side surface of the plug shell, which faces away from the second connecting seat, so that third resealing is formed. Through triple sealing, multiple sealing is realized between the socket and the plug, and the sealing performance of the watertight connector is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a watertight connector according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the plug, receptacle and tail housing assembly of the watertight connector of FIG. 1;

FIG. 3 is an exploded view of the receptacle of the watertight connector of FIG. 2;

FIG. 4 is an exploded view of the plug of the watertight connector of FIG. 2;

FIG. 5 is a schematic front view of the core assembly of the plug of FIG. 4;

FIG. 6 is a schematic view of the structure of the plug and socket of the watertight connector according to the present utility model;

FIG. 7 is a cross-sectional view of the plug and receptacle of the watertight connector of FIG. 6;

FIG. 8 is a schematic view of the watertight connector of FIG. 6 showing the core assembly and the vent assembly in a connected state;

FIG. 9 is a cross-sectional view of the core assembly and the bore core assembly of the watertight connector of FIG. 8;

FIG. 10 is a schematic view of the watertight connector of FIG. 8 showing the core assembly and the vent assembly in a separated state;

FIG. 11 is a cross-sectional view of the core assembly and the bore core assembly of the watertight connector of FIG. 10;

FIG. 12 is a cross-sectional view of the watertight connector of FIG. 2 after the plug and tail housing assemblies are connected;

fig. 13 is a partial enlarged view at a in fig. 12.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Watertight connector	10	Socket
11	Needle core assembly	111	First connecting seat
				1111	Sealing sleeve	1112	Needle core pressing piece
1113	Needle core insulator	1114	Needle core sealing body
				1115	First sealing member	1116	Second sealing member
112	Needle core	111a	A first step surface
				13	Socket shell	30	Plug
31	Core assembly	311	Second connecting seat
				3111	Sealing groove	3112	Hole core compacting piece
3113	Hole core insulator	3114	Hole core sealing body
				3115	Third seal member	3116	Fourth sealing member
312	Hole core	311a	Second step surface
				33	Plug outer casing	35	Sealing ring
50	Tail shell assembly	51	Tail shell
				53	Air pipe	55	Compacting piece
57	Fifth sealing member	60	Cable with improved cable characteristics
				70	Nut

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a watertight connector.

In an embodiment of the present utility model, as shown in fig. 1 to 7, the watertight connector 1 includes:

the socket 10, one end of the socket 10 is used for connecting equipment, the socket 10 comprises a needle core assembly 11 and a socket shell 13, the socket shell 13 is sleeved on the periphery of the needle core assembly 11, the needle core assembly 11 comprises a first connecting seat 111 and a plurality of needle cores 112, a plurality of sealing sleeves 1111 are convexly arranged at one end of the first connecting seat 111 far away from the equipment, one needle core 112 is inserted into the first connecting seat 111 and penetrates through the sealing sleeve 1111, and the end part of the sealing sleeve 1111 is connected with the peripheral wall of the needle core to form a first step surface 111a; and

the plug 30, one end of the plug 30 is used for connecting the cable 60, the plug 30 comprises a hole core assembly 31 and a plug shell 33, the plug shell 33 is sleeved on the periphery of the hole core assembly 31, the hole core assembly 31 comprises a second connecting seat 311 and a plurality of hole cores 312, a plurality of sealing grooves 3111 are concavely arranged at one end, far away from the cable 60, of the second connecting seat 311, one hole core is inserted into the second connecting seat 311 and communicated with one sealing groove 3111, and a second step surface 311a is convexly arranged on the inner peripheral wall of the sealing groove 3111;

the plug 30 is connected with the socket 10, the needle core is arranged in the sealing groove 3111 in a penetrating way and is inserted into the hole core 312, the first step surface 111a is abutted against the second step surface 311a, one side surface of the first connecting seat 111 facing the plug 30 is abutted against one side surface of the second connecting seat 311 facing the socket 10, and one side surface of the socket housing 13 facing the first connecting seat 111 is abutted against one side surface of the plug housing 33 facing away from the second connecting seat 311.

The socket 10 includes a core assembly 11 and a socket housing 13, the core assembly 11 includes a first connecting seat 111 and a plurality of cores 112, the protruding seal cover 1111 that is equipped with in one end that the equipment was kept away from to the first connecting seat 111, a core 112 inserts and locates a connecting seat 111 to wear to locate a seal cover 1111, seal cover 1111 cup joints outside the core 112, the surface of core 112 is hugged closely to the internal surface of seal cover 1111 promptly, and then the surface of core 112 is hugged closely to the tip of seal cover 1111, seal cover 1111 closely wraps up outside the core 112, only remain partial core 112 to expose outside the first connecting seat 111 for be connected with hole core 312, and then can guarantee the leakproofness of first connecting seat 111 and core 112 junction.

The plug 30 comprises a hole core 312 assembly 31 and a plug shell 33, the hole core 312 assembly 31 comprises a second connecting seat 311 and a plurality of hole cores 312, a plurality of sealing grooves 3111 are concavely arranged at one end, far away from the cable 60, of the second connecting seat 311, one hole core 312 is inserted into the second connecting seat 311 and communicated with one sealing groove 3111, the hole cores 312 are inserted into the second connecting seat 311 and pass through the sealing groove 3111, namely, the outer surface of each hole core 312 is tightly attached to the inner wall of the corresponding sealing groove 3111, the sealing groove 3111 is tightly wrapped outside the corresponding hole core 312, and only part of the hole cores 312 are exposed in the grooves of the sealing groove 3111 and used for being connected with the needle cores, so that the sealing performance of the joint of the second connecting seat 311 and the hole cores 312 can be guaranteed.

The end of the sealing sleeve 1111 is connected with the needle core to form a first step surface 111a, the inner wall of the sealing groove 3111 is protruded to form a second step surface 311a, the first step surface 111a and the second step surface 311a are mutually matched, when the plug 30 is connected with the socket 10, the needle core is inserted into the sealing groove 3111 to be connected with the hole core, the first step surface 111a of the end of the sealing sleeve 1111 is abutted with the second step surface 311a in the sealing groove 3111, the two step surfaces are mutually attached, the joint between the two step surfaces is a sealing position, water and air are forbidden to pass through, and then a first resealing layer is formed.

Further, the outer diameter of the sealing sleeve 1111 gradually decreases from the direction of the device to the direction of the plug 30, and the inner diameter of the sealing groove 3111 gradually decreases from the direction of the socket 10 to the direction of the cable 60, i.e. the diameter variation of the sealing sleeve 1111 is adapted to the diameter variation of the sealing groove 3111, and when the sealing sleeve 1111 is inserted into the sealing groove 3111, the fitting degree is correspondingly increased along with the increase of the insertion depth, so as to improve the tightness.

Further, when the plug 30 is connected to the socket 10, and the core 112 is inserted into the seal groove 3111 and connected to the hole core 312, the first connecting seat 111 is abutted against the second connecting seat 311 towards the side surface of the plug 30, and the two are tightly bonded, and the seal sleeve 1111 and the seal groove 3111 are correspondingly disposed on the two surfaces, and are combined to form a seal position at the bonding position of the two surfaces, so as to form a second resealing layer.

Further, when the plug 30 is connected to the socket 10, and the core 112 is inserted into the seal groove 3111 and connected to the hole 312, the socket housing 13 located outside the first connection seat 111 is connected to the plug housing 33 located outside the second connection seat 311, the plug housing 33 is inserted into the socket housing 13, a clamping position is formed between the socket housing 13 and the first connection seat 111, the plug housing 33 is inserted into the clamping position, so that the outer peripheral surface of the plug housing 33 abuts against and is tightly attached to the inner peripheral surface of the socket housing 13, the two surfaces are attached to each other, and then the joint between the two surfaces is combined into a sealing position, thereby forming a third sealing layer.

The third resealing layer is a junction where water is prohibited from being connected to the socket housing 13 through the plug housing 33, the second resealing layer is a junction where water is prohibited from being connected to two opposite surfaces of the first connecting seat 111 and the second connecting seat 311, the first resealing layer is a junction where water is prohibited from being connected to the seal groove 3111 through the seal sleeve 1111, and the triple seal is sealed from the outside to the inside of the plug 30 and the socket 10, so that the sealing performance of the watertight connector 1 is improved.

Further, the watertight connector 1 further comprises a nut 70, one end of the nut 70 is clamped outside the plug housing 33 in a limiting manner, the plug housing 33 is limited to move in a direction away from the socket 10, and the other end of the nut is connected with the socket housing 13 through threads, so that the socket housing 13 and the plug housing 33 are connected, and connection stability of the socket housing and the plug housing is guaranteed.

According to the technical scheme, a first step surface 111a formed by connecting the end part of a sealing sleeve 1111 with the outer peripheral wall of a needle core 112 is abutted with a second step surface 311a formed by protruding the inner peripheral wall of a sealing groove 3111, so that a first resealing is formed; the side surface of the first connecting seat 111 facing the plug 30 is abutted with the side surface of the second connecting seat 311 facing the socket 10 to form a second reseal; the side surface of the socket housing 13 facing the first connection seat 111 abuts against the side surface of the plug housing 33 facing away from the second connection seat 311, forming a third reseal. By triple sealing, multiple sealing between the socket 10 and the plug 30 is realized, and the sealing performance of the watertight connector 1 is improved.

In an embodiment of the present utility model, as shown in fig. 1 to 11, the plug 30 includes a seal ring 35, the seal ring 35 is sleeved on the outer periphery of the plug housing 33, and when the plug housing 33 is inserted into the socket housing 13, the seal ring 35 abuts against the inner peripheral wall of the socket housing 13.

The seal ring 35 is sleeved on the outer periphery of the plug housing 33, and when the plug housing 13 located outside the first connecting seat 111 is connected with the plug housing 33 located outside the second connecting seat 311, that is, when the outer peripheral surface of the plug housing 33 is abutted with the inner peripheral surface of the plug housing 13, the seal ring 35 is arranged between the two surfaces, so that the tightness when the outer peripheral surface of the plug housing 33 is abutted with the inner peripheral surface of the plug housing 13 is increased, and the tightness of the third resealing layer is increased.

In an embodiment of the present utility model, as shown in fig. 3 and fig. 7 to fig. 11, the first connection seat 111 includes a core pressing member 1112, a core insulator 1113 and a core seal 1114, the core pressing member 1112, the core insulator 1113 and the core seal 1114 are sequentially connected by fasteners, the sealing sleeve 1111 is protruding on a side surface of the core seal 1114 facing away from the core insulator 1113, and the core sequentially passes through the core pressing member 1112, the core insulator 1113 and the core seal 1114 and is penetrating through the sealing sleeve 1111.

The core seal 1114 has a function of sealing the outer surface of the core, the core insulator 1113 has a function of connecting between the insulating metal housing and the core, and the core pressing member 1112 is connected with the fastener, has a higher strength than the core insulator 1113 and the core seal 1114, and thus has a function of rigidly connecting the metal connector and the insulator. The needle core sequentially passes through the needle core pressing piece 1112, the needle core insulator 1113 and the needle core sealing body 1114 and penetrates through the sealing sleeve 1111, so that the outer surface of the needle core can be ensured to be surrounded by the first connecting seat 111, the outer surface of the needle core is protected, the needle core is isolated from water, and a plurality of needle cores are assembled together, so that the effect of combining a plurality of needle cores is achieved.

Further, the needle core sealing body 1114 is made of rubber, the needle core insulator 1113 and the needle core sealing body 1114 are formed into a tight whole through die encapsulation, compression sealing is formed between the needle core sealing body 1114 and the needle core, and the overall structural stability of the first connecting seat 111 and the sealing performance of the connecting position of the end part of the sealing sleeve 1111 and the needle core are improved.

In an embodiment of the present utility model, as shown in fig. 3 and 7 to 11, the core seal 1114 includes a first assembly portion (not shown) and a first connection portion (not shown) protruding from an outer periphery of the first assembly portion, the first connection portion is connected to the core insulator 1113, the socket housing 13 is a cylinder, the socket housing 13 is sleeved on the first assembly portion, and an inner peripheral wall of the socket housing 13 is in interference fit with an outer peripheral wall of the first assembly portion.

In this embodiment, the first assembling portion and the first connecting portion protruding from the outer periphery of the first assembling portion form a step surface at the connection between the first assembling portion and the first connecting portion, the socket housing 13 is sleeved outside the first assembling portion and abuts against the end surface of the first connecting portion, and when the socket housing 13 is sleeved outside the first assembling portion, the first connecting portion has a limiting effect on the socket housing 13, so that the connection stability of the socket housing 13 and the first connecting seat 111 is ensured, and the falling of the socket housing 13 is avoided. The inner peripheral wall of the socket housing 13 is in interference fit with the outer peripheral wall of the first assembly part, so that the tightness of the joint between the outer peripheral wall of the first assembly part and the inner peripheral wall of the socket housing 13 is ensured, water is prevented from entering the first connecting seat 111 from one side of the socket housing 13, which is close to equipment, and the overall tightness of the watertight connector 1 is improved.

In an embodiment of the present utility model, as shown in fig. 3 and fig. 7 to fig. 11, the first connecting seat 111 further includes a first sealing member 1115, and the first sealing member 1115 is sleeved on the outer periphery of the first assembling portion and abuts against the inner peripheral wall of the socket housing 13.

The outer periphery of first equipment portion is located to first sealing member 1115 cover, when socket shell 13 is connected with first equipment portion, namely when the outer periphery wall of first equipment portion and the inner periphery wall butt of socket shell 13, first sealing member 1115 sets up between two surfaces, and then has increased the leakproofness when the outer periphery wall of first equipment portion and the inner periphery wall butt of socket shell 13, has guaranteed the leakproofness of the outer periphery wall of first equipment portion and the inner periphery wall junction of socket shell 13, has avoided water to get into in the first connecting seat 111 from the side that socket shell 13 is close to equipment, has improved the holistic leakproofness of watertight connector 1.

In an embodiment of the present utility model, as shown in fig. 7, 9 and 11, the first connecting seat 111 further includes a second sealing member 1116, where the second sealing member 1116 is sleeved on the outer surface of the needle core 312 and abuts against the inner wall of the needle core insulator 1113.

The second sealing piece 1116 is sleeved on the outer surface of the needle core, when the needle core is inserted into the first connecting seat 111, namely, the outer surface of the needle core is abutted against the inner wall of the needle core insulator 1113, the second sealing piece 1116 is arranged between the outer surface of the needle core and the inner wall of the needle core insulator 1113, so that the sealing performance of the outer surface of the needle core 312 and the inner wall of the needle core insulator 1113 in the abutted against process is improved, the sealing performance of the connecting part of the outer surface of the needle core 312 and the inner wall of the needle core insulator 1113 is ensured, water is prevented from entering the first connecting seat 111 from one side, close to equipment, of the first connecting seat 111, and the overall sealing performance of the watertight connector 1 is improved.

In an embodiment of the present utility model, as shown in fig. 4, 5, and 7 to 11, the second connection seat 311 includes a core pressing member 3112, a core insulator 3113, and a core sealing member 3114, where the core pressing member 3112, the core insulator 3113, and the core pressing member 3112 are sequentially connected by fasteners, the sealing groove 3111 is opened on a surface of the core sealing member 3114 facing away from the core insulator 3113 and extends to the core insulator 3113, and the core sequentially penetrates through the core pressing member 3112, the core insulator 3113, and the core pressing member 3112 and is penetrated through the sealing groove 3111.

Core seal 3114 has the effect of sealing the outer surface of core 312, core insulator 3113 has the effect of insulating the connection between the metal housing and core 312, core compact 3112 is connected to the fastener, has a higher strength than core insulator 3113 and core seal 3114, and therefore has the effect of rigidly connecting the metal connector and insulator. The hole core sequentially passes through the hole core pressing piece 3112, the hole core insulator 3113 and the hole core sealing body 3114 and passes through the sealing sleeve 1111, so that the outer surface of the hole core 312 is surrounded by the first connecting seat 111, the outer surface of the hole core 312 is protected from water, and a plurality of hole cores 312 are assembled together, so that the effect of combining the plurality of hole cores 312 is achieved.

Further, the hole core sealing body 3114 is made of rubber, the hole core insulator 3113 and the hole core sealing body 3114 are formed into a compact whole through die encapsulation, compression sealing is formed between the hole core sealing body 3114 and the hole core, and accordingly overall structural stability of the first connecting seat 111 and sealing performance of a connecting position of the end portion of the sealing sleeve 1111 and the hole core are improved.

In an embodiment of the present utility model, as shown in fig. 4, 5, and 7 to 11, the core seal body 3114 includes a second assembly portion (not shown) and a second connection portion (not shown) protruding from an outer periphery of the second assembly portion, the second connection portion is connected to the core insulator 3113, the plug housing 33 is a cylinder, the plug housing 33 is sleeved on the second assembly portion, and an inner peripheral wall of the plug housing 33 is in interference fit with an outer peripheral wall of the second assembly portion.

In this embodiment, the second assembling portion and the second connecting portion protruding from the outer periphery of the second assembling portion form a step surface at the connection between the second assembling portion and the second connecting portion, the plug housing 33 is sleeved outside the second assembling portion and abuts against the end surface of the second connecting portion, and when the plug housing 33 is sleeved outside the second assembling portion, the second connecting portion has a limiting effect on the plug housing 33, so that the connection stability of the plug housing 33 and the second connecting seat 311 is ensured, and the falling of the plug housing 33 is avoided. The interference fit of the inner peripheral wall of the plug housing 33 and the outer peripheral wall of the second assembly part ensures the tightness of the joint between the outer peripheral wall of the second assembly part and the inner peripheral wall of the plug housing 33, prevents water from entering the second connecting seat 311 from one side of the plug housing 33, which is close to the cable 60, and improves the tightness of the whole watertight connector 1.

In an embodiment of the present utility model, as shown in fig. 4, 5, and 7 to 11, the second connecting seat 311 further includes a third seal 3115, where the third seal 3115 is sleeved on the outer periphery of the hole core seal 3114 and abuts against the inner peripheral wall of the plug housing 33;

the third sealing member 3115 is sleeved on the outer periphery of the second assembly portion, when the plug housing 33 is connected with the second assembly portion, that is, when the outer periphery wall of the second assembly portion abuts against the inner periphery wall of the plug housing 33, the third sealing member 3115 is arranged between the two surfaces, so that the sealing performance of the joint between the outer periphery wall of the second assembly portion and the inner periphery wall of the plug housing 33 is improved, the sealing performance of the joint between the outer periphery wall of the second assembly portion and the inner periphery wall of the plug housing 33 is ensured, water is prevented from entering the second connecting seat 311 from one side of the plug housing 33 close to the cable 60, and the overall sealing performance of the watertight connector 1 is improved.

And/or, as shown in fig. 7, 9 and 11, the second connecting seat 311 further includes a fourth sealing member 3116, where the fourth sealing member 3116 is sleeved on the outer surface of the hole core and abuts against the inner wall of the hole core insulator 3113.

The fourth sealing piece 3116 is sleeved on the outer surface of the hole core, when the hole core is inserted into the second connecting seat 311, namely, when the outer surface of the hole core is abutted against the inner wall of the hole core insulator 3113, the fourth sealing piece 3116 is arranged between the outer surface of the hole core and the inner wall of the hole core insulator 3113, so that the sealing performance of the joint between the outer surface of the hole core and the inner wall of the hole core insulator 3113 is improved, the sealing performance of the joint between the outer surface of the hole core and the inner wall of the hole core insulator 3113 is ensured, water is prevented from entering the second connecting seat 311 from one side, close to the cable 60, of the second connecting seat 311, and the overall sealing performance of the watertight connector 1 is improved.

In an embodiment of the present utility model, as shown in fig. 12 and 13, the watertight connector 1 further includes a tail housing assembly 50, the tail housing assembly 50 includes a tail housing 51, an air pipe 53, a pressing member 55 and a fifth sealing member 57, one end of the tail housing 51 is sleeved on the plug housing 33, the other end is sleeved on the cable 60, one end of the air pipe 53 is sleeved on the other end of the tail housing 51, the pressing member 55 is sleeved on the outer portion of the air pipe 53 corresponding to the position of the tail housing 51, and the fifth sealing member 57 is disposed between the tail housing 51 and the cable 60.

The tail housing assembly 50 is used for sealing and cable protection. The tail shell assembly 50 is composed of a tail shell 51, a pressing member 55, a fifth sealing member 57 and an air pipe 53, one end of the tail shell 51 is sleeved on the plug housing 33, the other end of the tail shell is sleeved on the cable 60, one end of the air pipe 53 is sleeved on the other end of the tail shell 51, the pressing member 55 is sleeved on the outer portion of the air pipe 53 and corresponds to the position of the tail shell 51, and the fifth sealing member 57 is arranged between the tail shell 51 and the cable 60. In the present embodiment, the number of the fifth sealing members 57 is two, and the two fifth sealing members 57 are disposed between the tail housing 51 and the cable 60 at intervals for sealing between the cable 60 and the tail housing 51; the air pipe 53 pressing piece 55 and the air pipe 53 function to protect the cable while the first seal at the tail end of the plug 30 is made, so that the cable is prevented from being damaged and the service life is prolonged.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims

1. A watertight connector, comprising:

the socket (10), one end of the socket (10) is used for connecting equipment, the socket (10) comprises a needle core assembly (11) and a socket shell (13), the socket shell (13) is sleeved on the periphery of the needle core assembly (11), the needle core assembly (11) comprises a first connecting seat (111) and a plurality of needle cores (112), one end of the first connecting seat (111) far away from the equipment is convexly provided with a plurality of sealing sleeves (1111), one needle core (112) is inserted into the first connecting seat (111) and penetrates through one sealing sleeve (1111), and the end part of the sealing sleeve (1111) is connected with the peripheral wall of the needle core (112) to form a first step surface (111 a); and

the plug (30), one end of the plug (30) is used for connecting a cable (60), the plug (30) comprises a hole core assembly (31) and a plug shell (33), the plug shell (33) is sleeved on the periphery of the hole core assembly (31), the hole core assembly (31) comprises a second connecting seat (311) and a plurality of hole cores (312), a plurality of sealing grooves (3111) are concavely arranged at one end, far away from the cable (60), of the second connecting seat (311), one hole core (312) is inserted into the second connecting seat (311) and communicated with one sealing groove (3111), and a second step surface (311 a) is formed on the inner peripheral wall of the sealing groove (3111) in a protruding mode;

the plug (30) is connected with the socket (10), the needle core (112) penetrates through the sealing groove (3111) and is inserted into the hole core (312), the first step surface (111 a) is abutted against the second step surface (311 a), the first connecting seat (111) faces towards one side surface of the plug (30) and the second connecting seat (311) faces towards one side surface of the socket (10), and the socket shell (13) faces towards one side surface of the first connecting seat (111) and is abutted against one side surface of the plug shell (33) which faces away from the second connecting seat (311).

2. The watertight connector according to claim 1, wherein the plug (30) comprises a sealing ring (35), the sealing ring (35) is sleeved on the outer periphery of the plug housing (33), and when the plug housing (33) is inserted into the socket housing (13), the sealing ring (35) abuts against the inner peripheral wall of the socket housing (13).

3. The watertight connector according to claim 2, wherein the first connecting seat (111) comprises a needle pressing member (1112), a needle insulator (1113) and a needle sealing body (1114), the needle pressing member (1112), the needle insulator (1113) and the needle sealing body (1114) are sequentially connected through fasteners, the sealing sleeve (1111) is arranged on one side surface of the needle sealing body (1114) facing away from the needle insulator (1113) in a protruding mode, and the needle sequentially penetrates through the needle pressing member (1112), the needle insulator (1113) and the needle sealing body (1114) and penetrates through the sealing sleeve (1111).

4. A watertight connector according to claim 3, wherein the pin core sealing body (1114) comprises a first assembling portion and a first connecting portion protruding from the outer periphery of the first assembling portion, the first connecting portion is connected with the pin core insulator (1113), the socket housing (13) is a cylinder, the socket housing (13) is sleeved on the first assembling portion, and the inner peripheral wall of the socket housing (13) is in interference fit with the outer peripheral wall of the first assembling portion.

5. A watertight connector according to claim 4, wherein the first connecting seat (111) further comprises a first sealing member (1115), and the first sealing member (1115) is sleeved on the outer periphery of the first assembling portion and abuts against the inner peripheral wall of the socket housing (13).

6. The watertight connector according to claim 5, wherein the first connecting seat (111) further comprises a second sealing member (1116), and the second sealing member (1116) is sleeved on the outer surface of the needle core (112) and abuts against the inner wall of the needle core insulator (1113).

7. The watertight connector according to any one of claims 1 to 6, wherein the second connection seat (311) comprises a core pressing member (3112), a core insulator (3113) and a core sealing member (3114), the core pressing member (3112), the core insulator (3113) and the core pressing member (3112) are sequentially connected by fasteners, the seal groove (3111) is opened at a side surface of the core sealing member (3114) facing away from the core insulator (3113) and extends to the core insulator (3113), and the core is sequentially inserted through the core pressing member (3112), the core insulator (3113) and the core pressing member (3112) and is inserted into the seal groove (3111).

8. The watertight connector according to claim 7, wherein the core sealing body (3114) includes a second assembling portion and a second connecting portion protruding from an outer periphery of the second assembling portion, the second connecting portion is connected to the core insulating body (3113), the plug housing (33) is a cylindrical body, the plug housing (33) is sleeved on the second assembling portion, and an inner peripheral wall of the plug housing (33) is in interference fit with an outer peripheral wall of the second assembling portion.

9. The watertight connector according to claim 8, wherein the second connecting seat (311) further comprises a third sealing member (3115), the third sealing member (3115) being sleeved on the outer periphery of the second assembly portion and abutting against the inner peripheral wall of the plug housing (33);

and/or, the second connecting seat (311) further comprises a fourth sealing element (3116), and the fourth sealing element (3116) is sleeved on the outer surface of the hole core (312) and is abutted to the inner wall of the hole core insulator (3113).

10. The watertight connector according to claim 1, further comprising a tail housing assembly (50), wherein the tail housing assembly (50) comprises a tail housing (51), an air pipe (53), a pressing member (55) and a fifth sealing member (57), one end of the tail housing (51) is sleeved on the plug housing (33), the other end of the tail housing (53) is sleeved on the cable (60), one end of the air pipe (53) is sleeved on the other end of the tail housing (51), the pressing member (55) is sleeved on a position, corresponding to the tail housing (51), outside the air pipe (53), and the fifth sealing member (57) is arranged between the tail housing (51) and the cable (60).