CN216750502U

CN216750502U - Connector with self-locking structure

Info

Publication number: CN216750502U
Application number: CN202123348127.7U
Authority: CN
Inventors: 凌国晴; 向卫; 周岷; 杨秀峰
Original assignee: Kunshan Yongshun Electronic Technology Development Co ltd
Current assignee: Kunshan Yongshun Electronic Technology Development Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-14
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the field of electronic connectors, and discloses a connector assembly with a self-locking structure, which comprises a male connector head and a female connector head which are correspondingly matched, pulled and inserted and connected, wherein the male connector head comprises a cylindrical protective shell which is coaxially arranged from outside to inside in sequence, first conductor and the cylindrical second conductor of tube-shape, the female head of connector including respectively with second conductor surface and first conductor surface elasticity to inserting switch on third conductor and fourth conductor with, the middle part bilateral symmetry of first conductor is provided with elasticity and switches on the concave station, fourth conductor middle part switches on the concave station with elasticity and corresponds the position and be provided with the elasticity that can elastically slide between first conductor and protective housing and switch on the shell fragment, elasticity switches on the concave station and has the function that one-way spacing elasticity switched on the shell fragment, be provided with between first conductor and the protective housing and assist and switch on the elasticity that the shell fragment is spacing at elasticity and switch on the elastic component in the concave station. The plugging and unplugging are simple and convenient, the locking is automatic, and the falling is not easy to occur in the using process.

Description

Connector with self-locking structure

Technical Field

The utility model relates to an electronic connector field, in particular to connector with from locking structure.

Background

Automotive connectors are a component that is frequently accessed by electronics engineers. Its effect is very simple: a bridge for communication is erected between the blocked part or isolated and non-communicated circuits in the circuit, so that current flows, and the circuit achieves the preset function. Various shapes and styles of structures of the existing automobile connector are developed according to requirements, but the connector generally comprises a female connector part and a male connector part, and when the connector is connected, the male end is inserted into the female end to complete connection and communication. The connection stability of female head of connector and connector male head is related to the signal transmission stability and the life of connector in the reality use, current most connector all is directly pulled out and inserts, friction force after inserting through female head of connector and connector male head guarantees not to drop or extra design has special independent operation to lock the structure like the screw and the screw hole of matching etc. it is big to guarantee not to drop the degree of difficulty through friction force, it influences to pull out and insert the operation again when friction force is too big, special independent operation is also more troublesome like during fastening screw structure operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a connector with from locking structure.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a connector with from locking structure, is including corresponding public head of connector and the female head of connector that the matching is pulled out and is inserted the connection, public head of connector is including the cylindrical protective housing of coaxial setting, the first conductor of tube-shape and the cylindrical second conductor, the second conductor is located protective housing's axle center position, first conductor is located between protective housing and the cylindrical second conductor, the female head of connector includes the third conductor of the tube-shape that switches on to inserting with second conductor surface elasticity, the fourth conductor of the tube-shape that switches on to inserting with first conductor surface elasticity and the first insulation subassembly of insulating separation third conductor and fourth conductor, the middle part bilateral symmetry of first conductor is provided with elasticity and switches on the concave station, elasticity switches on inside including from the first conductor outer circumferencial face towards the first conductor axle center horizontally extending first switch on spacing face and from first conductor axle center downwardly extending is close to first conductor one side slant downwardly extending to the first conductor outer conductor axle center spacing face The first conduction sliding surface of the periphery, the middle part of the fourth conductor is provided with an elastic conduction elastic sheet corresponding to the elastic conduction concave table, the elastic conduction elastic sheet comprises a first conduction limiting elastic sheet which extends from the outer periphery of the fourth conductor to the elastic conduction concave table in a contraposition horizontal manner, a first elastic connecting sheet which extends from one side of the first conduction limiting elastic sheet close to the elastic conduction concave table to the outside of the outer periphery of the fourth conductor in an inclined downward manner, and a smooth arc-shaped sheet which is positioned at the lower end of the first elastic connecting sheet and protrudes outwards, a spring is fixed at the bottom of an annular groove formed by the protective shell and the first conductor, an annular sheet positioned in the annular groove formed by the protective shell and the first conductor is fixed at one end of the spring corresponding to the connector female head, the lower end of the fourth conductor corresponds to the annular sheet, and the inner diameter of the protective shell is smaller than the maximum width of the two smooth arc-shaped sheets in the horizontal direction, when the first conduction limiting elastic sheet is located on the elastic conduction concave table, the spring is in a compressed state under the downward pressure of the lower end of the fourth conductor through the annular sheet. The plugging and unplugging are simple and convenient, the locking is automatic, and the falling is not easy to occur in the using process.

Further, the method comprises the following steps: the upper end of the protection shell is higher than the upper end of the first conductor, a combined concave table is arranged on the inner arc surface of the protection shell and on the lower side corresponding to the elastic conduction concave table, the combined concave table comprises a first guide groove which is downwards recessed along the radial direction of the inner arc surface of the protection shell and a second guide groove which extends upwards from the upper side of the bottom of the first guide groove in an inclined mode to the inner arc surface of the protection shell, a third guide groove in the vertical direction is arranged on one side, corresponding to the elastic conduction concave table, of the inner arc surface of the protection shell, the upper end of the third guide groove is located between the upper end of the protection shell and the upper end of the first conductor, the lower end of the third guide groove and the lower end of the first guide groove are located on the same horizontal plane and do not have an overlapped part, a fourth guide groove is arranged between the lower end of the third guide groove and the first guide groove, and the smooth arc sheet can be arranged on the first guide groove, The second guide groove, the third guide groove and the fourth guide groove slide in the first guide groove and the second guide groove. The elastic conduction elastic sheet has small deformation in the process of pulling and inserting, is more convenient to pull and insert, and has better locking effect.

Further, the method comprises the following steps: the upper end of the protective shell is provided with a first mark at a position corresponding to the third guide groove, the upper end of the protective shell is provided with a second mark at a position corresponding to the first guide groove, the outer shell of the female connector is provided with a first mark at a position corresponding to the third guide groove, and the outer shell of the female connector is provided with a second mark at a position corresponding to the first guide groove. The butt joint position is convenient to identify, and the alignment pulling and inserting rotation operation is convenient.

Further, the method comprises the following steps: the axis position of the first conductor is provided with a second conductor fixing column, the axis position of the second conductor fixing column is provided with a fixing hole for the second conductor to pass through, the lower part of the second conductor is fixed in the fixing hole, and a fixing column accommodating cavity is arranged on the first insulating assembly and corresponds to the second conductor fixing column. Effectively consolidate the second conductor, prevent to pull out and insert the in-process and damage the second conductor, increase of service life.

Further, the method comprises the following steps: the fourth conductor is provided with an elastic protection ring at a position corresponding to the upper end of the protection shell, the outer diameter of the elastic protection ring in a natural state is larger than the inner diameter of the protection shell, the minimum effective outer diameter of the elastic protection ring is smaller than the inner diameter of the protection shell, the first insulation assembly is made of an elastic insulation assembly, the inner diameter of the fixing column accommodating cavity in the natural state is smaller than the outer diameter of the second conductor fixing column, and the maximum effective inner diameter of the fixing column accommodating cavity is larger than the outer diameter of the second conductor fixing column. Effective waterproof dustproof, increase of service life.

Further, the method comprises the following steps: the connector comprises a first conductor, a second conductor, a connector male head, a first insulation assembly and a second insulation assembly, wherein one end of the first conductor, corresponding to the connector female head, is provided with a smooth transition surface which is transited to the outer circumferential surface of the first conductor, one end of the second conductor, corresponding to the connector female head, is provided with a smooth transition surface which is transited to the outer circumferential surface of the second conductor, and one end of the first insulation assembly, corresponding to the connector male head, is provided with a smooth transition surface which is transited to the outer circumferential surface of the first insulation assembly. Has the function of guiding and rectifying deviation, and is convenient for relative insertion and connection.

Further, the method comprises the following steps: the first conductor and the fourth conductor are integrally formed by stamping, cutting, bending and molding. Convenient production and low cost.

Further, the method comprises the following steps: and a plurality of conducting sheet structures which are elastically conducted with the upper end of the first conductor are arranged at the corresponding positions of the fourth conductor on the first conductor and the upper end of the first conductor. The conducting contact area is large, and the connection signal is good.

Drawings

FIG. 1 is a schematic front view of the present invention with a part of the structure removed;

FIG. 2 is a schematic front view of a first guide slot, a second guide slot, a third guide slot and a fourth guide slot portion;

fig. 3 is a front view of the female connector with a portion broken away.

Labeled as: the connector comprises a male connector 100, a protective shell 110, a first conductor 120, an elastic conduction concave table 121, a first conduction limiting surface 122, a first conduction sliding surface 123, a second conductor 130, a spring 140, an annular sheet 150, a first guide groove 161, a second guide groove 162, a third guide groove 170, a fourth guide groove 180, a female connector 200, a third conductor 210, a fourth conductor 220, an elastic conduction elastic sheet 221, a first conduction limiting elastic sheet 222, a first elastic connecting sheet 223, a smooth arc sheet 224, an elastic protection ring 225, a first insulation assembly 230, a fixed column accommodating cavity 231, a first mark 301 and a second mark 302.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1, a connector assembly with a self-locking structure includes a male connector 100 and a female connector 200 that are correspondingly matched to be plugged and unplugged, the male connector 100 includes a cylindrical protective housing 110, a cylindrical first conductor 120 and a cylindrical second conductor 130 that are coaxially disposed, the second conductor 130 is located at an axial center of the protective housing 110, the first conductor 120 is located between the protective housing 110 and the cylindrical second conductor 130, the female connector 200 includes a cylindrical third conductor 210 that is elastically plugged and conducted with an outer surface of the second conductor 130, a cylindrical fourth conductor 220 that is elastically plugged and conducted with an outer surface of the first conductor 120, and a first insulating assembly 230 that insulates and isolates the third conductor 210 and the fourth conductor 220, elastic conduction concave tables 121 are symmetrically disposed on two sides of a middle portion of the first conductor 120, and the elastic conduction concave tables 121 include first conduction limiting surfaces that horizontally extend from an outer circumferential surface of the first conductor 120 toward an axial center of the first conductor 120 122 and a first conduction sliding surface 123 extending obliquely downward from the first conduction limiting surface 122 to the outer circumferential surface of the first conductor 120 from the side close to the axis of the first conductor 120, wherein an elastic conduction elastic sheet 221 is arranged at the middle part of the fourth conductor 220 corresponding to the elastic conduction concave table 121, the elastic conduction elastic sheet 221 comprises a first conduction limiting elastic sheet 222 extending horizontally from the outer circumferential surface of the fourth conductor 220 to the elastic conduction concave table 121 in a contraposition manner, a first elastic connecting sheet 223 extending obliquely downward from the side close to the elastic conduction concave table 121 of the first conduction limiting elastic sheet 222 to the outside of the outer circumferential surface of the fourth conductor 220 and a smooth arc sheet 224 protruding outward from the lower end of the first elastic connecting sheet 223, a spring 140 is fixed at the bottom of the annular groove formed by the protective shell 110 and the first conductor 120, and an annular sheet 150 located in the annular groove formed by the protective shell 110 and the first conductor 120 is fixed at the end of the spring 140 corresponding to the female connector 200, the lower end of the fourth conductor 220 corresponds to the annular plate 150, the inner diameter of the protective shell 110 is smaller than the maximum width of the two smooth arc-shaped plates 224 in the horizontal direction, and when the first conduction limiting elastic sheet 222 is located in the elastic conduction concave table 121, the spring 140 is compressed by the downward pressure of the lower end of the fourth conductor 220 through the annular plate 150.

In specific implementation, there are a plurality of plug-in locking modes, mode 1: when the male connector 100 and the female connector 200 are inserted into each other, the elastic conducting concave table 121 and the elastic conducting elastic sheet 221 are inserted into each other in the vertical direction until the elastic conducting elastic sheet 221 moves into the elastic conducting concave table 121 in the process of inserting into each other, the spring 140 is in a compressed state, the spring 140 applies a relatively outward elastic force to the fourth conductor 220 through the annular sheet 150, so that the first conducting limiting elastic sheet 222 of the elastic conducting elastic sheet 221 on the fourth conductor 220 and the first conducting limiting surface 122 of the elastic conducting concave table 121 are abutted against each other for limiting, the inner cylinder surface of the protection shell 110 applies a force towards the axis direction of the protection shell 110 to the smooth arc-shaped sheet 224, the smooth arc-shaped sheet 224 elastically presses the first conduction limiting elastic sheet 222 to be limited in the elastic conduction concave table 121 through the first elastic connecting sheet 223, and the connector male head 100 and the connector female head 200 are automatically and elastically locked relatively;

mode 2: when the connector male head 100 and the connector female head 200 are inserted into each other, the elastic conducting concave table 121 on the connector male head 100 and the elastic conducting elastic sheet 221 on the connector female head 200 are inserted in a vertically staggered manner until the elastic conducting elastic sheet 221 relatively moves to correspond to the horizontal direction of the elastic conducting concave table 121 in the process of inserting, and then the connector male head 100 and the connector female head 200 are relatively rotated to relatively move the elastic conducting elastic sheet 221 on the connector female head 200 into the elastic conducting concave table 121 on the connector male head 100, at this time, the spring 140 is in a compressed state, the spring 140 applies a relatively outward elastic force to the fourth conductor 220 through the annular sheet 150, so that the first conducting limiting elastic sheet 222 of the elastic conducting elastic sheet 221 on the fourth conductor 220 and the first conducting limiting surface 122 of the elastic conducting concave table 121 are relatively abutted and limited, and the inner cylinder of the protective shell 110 applies a force towards the axis direction of the protective shell 110 to the smooth arc sheet 224, the smooth arc-shaped piece 224 elastically presses and limits the first conduction limiting elastic piece 222 in the elastic conduction concave table 121 through the first elastic connecting piece 223, namely, the connector male head 100 and the connector female head 200 are automatically and elastically locked relatively;

mode 3: when the male connector 100 and the female connector 200 are inserted into each other, the elastic conducting concave table 121 on the male connector 100 and the elastic conducting elastic sheet 221 on the female connector 200 are inserted in a vertically-staggered manner until the elastic conducting elastic sheet 221 is located between the elastic conducting concave table 121 and the annular sheet 150, the male connector 100 and the female connector 200 are relatively rotated, the elastic conducting elastic sheet 221 on the female connector 200 relatively moves to correspond to the elastic conducting concave table 121 on the male connector 100 in the vertical direction, the male connector 100 and the female connector 200 relatively move back to move the elastic conducting elastic sheet 221 on the female connector 200 relatively to the elastic conducting concave table 121 on the male connector 100, at this time, the spring 140 is in a compressed state, the spring 140 applies a relatively outward elastic force to the fourth conductor 220 through the annular sheet 150, so that the first conducting limiting elastic sheet 222 of the elastic conducting elastic sheet 221 on the fourth conductor 220 is in contact with the first conducting limiting surface 122 of the elastic conducting concave table 121 for limiting, the inner cylinder surface of the protection shell 110 applies a force towards the axis direction of the protection shell 110 to the smooth arc-shaped sheet 224, the smooth arc-shaped sheet 224 elastically presses the first conduction limiting elastic sheet 222 to be limited in the elastic conduction concave table 121 through the first elastic connecting sheet 223, and the connector male head 100 and the connector female head 200 are automatically and elastically locked relatively;

when the connector is pulled out relatively, the connector male head 100 and the connector female head 200 are pressed relatively, the elastic conduction elastic sheet 221 is located between the elastic conduction concave table 121 and the annular sheet 150, locking is released, then the connector male head 100 and the connector female head 200 are rotated relatively, the elastic conduction elastic sheet 221 on the elastic conduction concave table 121 on the connector male head 100 and the elastic conduction elastic sheet 221 on the connector female head 200 are dislocated relatively in the vertical direction, and then the connector male head 100 and the connector female head 200 are separated relatively.

The plugging and unplugging are simple and convenient, the locking is automatic, and the falling is not easy to occur in the using process.

On the basis of the above, as shown in fig. 1 and 2, the upper end of the protection housing 110 is higher than the upper end of the first conductor 120, the lower side of the inner arc surface of the protection housing 110 corresponding to the elastic conduction recessed table 121 is provided with a combined recessed table, the combined recessed table includes a first guide groove 161 radially recessed along the inner arc surface of the protection housing 110 and a second guide groove 162 obliquely extending upward from the upper side of the bottom of the first guide groove 161 to the inner arc surface of the protection housing 110, one side of the inner arc surface of the protection housing 110 corresponding to the elastic conduction recessed table 121 is provided with a vertical third guide groove 170, the upper end of the third guide groove 170 is located between the upper end of the protection housing 110 and the upper end of the first conductor 120, the lower end of the third guide groove 170 is located at the same level with and does not overlap with the lower end of the first guide groove 161, a fourth guide groove 180 is located between the lower end of the third guide groove 170 and the first guide groove 161, the rounded arc-shaped piece 224 may slide in the first guide groove 161, the second guide groove 162, the third guide groove 170, and the fourth guide groove 180.

In a specific implementation, during the butt joint, the elastic conducting elastic piece 221 is inserted oppositely along the third guiding groove 170, at this time, the elastic conducting elastic piece 221 and the elastic conducting concave table 121 are dislocated, when the butt joint starts, the round arc piece 224 is pressed by the inner surface of the upper end of the first conductor 120 towards the axial center direction until the round arc piece 224 enters the third guiding groove 170, when the insertion continues, the connecting portion of the first conducting limiting elastic piece 222 and the first elastic connecting piece 223 is pressed by the radial pressure of the outer surface of the first conductor 120, when the round arc piece 224 moves to the bottom of the third guiding groove 170 during the relative insertion process of the connector male head 100 and the connector female head 200, the spring 140 is compressed by the annular piece 150 at the end where the fourth conductor 220 is inserted relatively, at this time, the connector male head 100 and the connector female head 200 are rotated relatively to move the round arc piece 224 from the bottom of the third guiding groove 170 to the first guiding groove 161 along the fourth guiding groove 180, at this time, the elastic conduction elastic sheet 221 corresponds to the elastic conduction concave table 121 in the vertical direction;

then, the hand is released, no force is applied to the outside, the spring 140 applies an outward elastic force to the fourth conductor 220 relative to the protective shell 110 through the annular plate 150, the fourth conductor 220 moves outward relative to the protective shell 110 until the elastic conduction elastic sheet 221 enters the elastic conduction concave table 121, the first conduction limiting elastic sheet 222 is abutted and limited by the first conduction limiting surface 122, at the same time, the round-arc piece 224 moves in the first guide slot 161 along the direction of the second guide slot 162, the round-arc piece 224 is pressed to be larger toward the axle center of the first conductor 120, the first conduction limiting elastic sheet 222 is elastically pressed into the elastic conduction concave table 121 through the first elastic connecting sheet 223, namely, the first conduction limiting elastic sheet 222 is elastically limited into the elastic conduction concave table 121, and at the moment, the connector male head 100 and the connector female head 200 are locked through the elastic conduction concave table 121 and the elastic conduction elastic sheet 221;

when the connector male head 100 and the connector female head 200 are pulled out relatively, the connector male head 100 and the connector female head 200 are pressed relatively to move the smooth arc-shaped piece 224 into the first guide groove 161 along the direction of the second guide groove 162, meanwhile, the elastic conduction elastic piece 221 slides out from the elastic conduction concave table 121 along the first conduction sliding surface 123, the relative locking is released, then, the connector male head 100 and the connector female head 200 are rotated relatively to transfer the smooth arc-shaped piece 224 into the third guide groove 170 from the first guide groove 161 along the fourth guide groove 180, at the moment, the elastic conduction elastic piece 221 and the elastic conduction concave table 121 are dislocated, and then, the connector male head 100 and the connector female head 200 are separated along the direction of the third guide groove 170;

the elastic conduction elastic piece 221 is small in deformation in the process of pulling and inserting, is more convenient to pull and insert and has a better locking effect.

On the basis, as shown in fig. 2, a first mark 301 is disposed at a position corresponding to the third guide groove 170 at the upper end of the protective housing 110, a second mark 302 is disposed at a position corresponding to the first guide groove 161 at the upper end of the protective housing 110, a first mark 301 is disposed at a position corresponding to the third guide groove 170 on the outer housing of the female connector 200, and a second mark 302 is disposed at a position corresponding to the first guide groove 161 on the outer housing of the female connector 200. In this embodiment, the first mark 301 is a green mark to indicate the unlocked state, the second mark 302 is a red mark to indicate the locked state, and in this embodiment, the first mark 301 and the second mark 302 may also be other different color or text marks capable of distinguishing; the butt joint position is convenient to identify, and the alignment, pulling and inserting rotation operation is convenient.

On the basis, as shown in fig. 1 and fig. 3, a second conductor fixing post is disposed at an axial center of the first conductor 120, a fixing hole for the second conductor 130 to pass through is disposed at an axial center of the second conductor fixing post, a lower portion of the second conductor 130 is fixed in the fixing hole, and a fixing post accommodating cavity 231 is disposed on the first insulating assembly 230 at a position corresponding to the second conductor fixing post. Effectively strengthen second conductor 130, prevent to pull out and insert the in-process and damage second conductor 130, increase of service life.

On the basis, as shown in fig. 1 and fig. 3, an elastic protection ring 225 is disposed at a position of the fourth conductor 220 corresponding to the upper end of the protection housing 110, an outer diameter of the elastic protection ring 225 in a natural state is greater than an inner diameter of the protection housing 110, a minimum effective outer diameter of the elastic protection ring 225 is smaller than the inner diameter of the protection housing 110, the first insulation component 230 is made of an elastic insulation component, an inner diameter of the fixing column accommodating cavity 231 in the natural state is smaller than an outer diameter of the second conductor fixing column, and a maximum effective inner diameter of the fixing column accommodating cavity 231 is greater than the outer diameter of the second conductor fixing column. In this embodiment, the elastic protection ring 225 is made of an elastic, insulating, and waterproof rubber material, and in the specific implementation, the elastic protection ring 225 may also be made of other elastic materials with waterproof and insulating functions, so as to effectively prevent water and dust and prolong the service life.

On the basis of the above, as shown in fig. 1 to fig. 3, one end of the first conductor 120 corresponding to the female connector 200 is provided with a smooth transition surface which is transited to the outer circumferential surface of the first conductor 120, one end of the second conductor 130 corresponding to the female connector 200 is provided with a smooth transition surface which is transited to the outer circumferential surface of the second conductor 130, and one end of the first insulating element 230 corresponding to the male connector 100 is provided with a smooth transition surface which is transited to the outer circumferential surface of the first insulating element 230. Has the function of guiding and rectifying deviation, and is convenient for relative insertion and connection.

On the basis of the above, as shown in fig. 1 to 3, the first conductor 120 and the fourth conductor 220 are formed by integrally stamping, cutting, bending and forming. Convenient production and low cost.

In addition, as shown in fig. 1, a plurality of conducting strips are disposed on the first conductor 120 at positions corresponding to the upper ends of the fourth conductor 220 and the first conductor 120, and the conducting strips are in elastic conduction with the upper ends of the first conductor 120. The conducting contact area is large, and the connection signal is good.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a connector with from locking structure, is including corresponding male head (100) of the connector and the female head (200) of connector that the matching is pulled out and is inserted the connection, its characterized in that: the male connector (100) comprises a cylindrical protective shell (110), a cylindrical first conductor (120) and a cylindrical second conductor (130) which are coaxially arranged, the second conductor (130) is located at the axis position of the protective shell (110), the first conductor (120) is located between the protective shell (110) and the cylindrical second conductor (130), the female connector (200) comprises a cylindrical third conductor (210) which is in elastic opposite insertion conduction with the outer surface of the second conductor (130), a cylindrical fourth conductor (220) which is in elastic opposite insertion conduction with the outer surface of the first conductor (120) and a first insulating assembly (230) for insulating and blocking the third conductor (210) and the fourth conductor (220), elastic conduction concave tables (121) are symmetrically arranged on two sides of the middle of the first conductor (120), and the elastic conduction concave tables (121) internally comprise a first conduction limiting surface (122) and an axis which horizontally extend from the outer circumferential surface of the first conductor (120) to the first conductor (120), and the axis A first conduction sliding surface (123) extending downwards obliquely to the outer circumferential surface of the first conductor (120) from one side of the first conduction limiting surface (122) close to the axis of the first conductor (120), an elastic conduction elastic sheet (221) is arranged at the position of the middle part of the fourth conductor (220) corresponding to the elastic conduction concave table (121), the elastic conduction elastic sheet (221) comprises a first conduction limiting elastic sheet (222) horizontally extending into the elastic conduction concave table (121) from the outer circumferential surface of the fourth conductor (220), a first elastic connecting sheet (223) extending downwards obliquely to the outside of the outer circumferential surface of the fourth conductor (220) from one side of the first conduction limiting elastic sheet (222) close to the elastic conduction concave table (121), and a smooth arc sheet (224) protruding outwards from the lower end of the first elastic connecting sheet (223), wherein a spring (140) is fixed at the bottom of an annular groove formed by the protection shell (110) and the first conductor (120), the connector is characterized in that an annular sheet (150) located in an annular groove formed by the protective shell (110) and the first conductor (120) is fixed at one end, corresponding to the connector female head (200), of the spring (140), the lower end of the fourth conductor (220) corresponds to the annular sheet (150), the inner diameter of the protective shell (110) is smaller than the maximum width of the two smooth arc sheets (224) in the horizontal direction, and the spring (140) is in a compressed state under the downward pressure of the lower end of the fourth conductor (220) through the annular sheet (150) when the first conduction limiting elastic sheet (222) is located in the elastic conduction concave table (121).

2. The connector assembly according to claim 1, wherein: the upper end of the protection shell (110) is higher than the upper end of the first conductor (120), a combined concave table is arranged on the inner arc surface of the protection shell (110) and on the lower side corresponding to the elastic conduction concave table (121), the combined concave table comprises a first guide groove (161) which is recessed along the inner arc surface of the protection shell (110) in the radial direction and a second guide groove (162) which extends from the upper side of the bottom of the first guide groove (161) to the inner arc surface of the protection shell (110) in an inclined and upward mode, a third guide groove (170) in the vertical direction is arranged on the inner arc surface of the protection shell (110) and on the side corresponding to the elastic conduction concave table (121), the upper end of the third guide groove (170) is located between the upper end of the protection shell (110) and the upper end of the first conductor (120), the lower end of the third guide groove (170) and the lower end of the first guide groove (161) are located on the same horizontal plane and have no overlapped part, a fourth guide groove (180) is arranged between the lower end of the third guide groove (170) and the first guide groove (161), and the smooth arc-shaped piece (224) can slide in the first guide groove (161), the second guide groove (162), the third guide groove (170) and the fourth guide groove (180).

3. The connector assembly with a self-locking structure according to claim 2, wherein: the upper end of protective housing (110) is provided with first mark (301) with third guide way (170) corresponding position, the upper end of protective housing (110) is provided with second mark (302) with first guide way (161) corresponding position, be provided with first mark (301) with third guide way (170) corresponding position on the shell body of female head of connector (200), be provided with second mark (302) with first guide way (161) corresponding position on the shell body of female head of connector (200).

4. The connector assembly according to claim 1, wherein: the axial center part of the first conductor (120) is provided with a second conductor fixing column, the axial center part of the second conductor fixing column is provided with a fixing hole for the second conductor (130) to pass through, the lower part of the second conductor (130) is fixed in the fixing hole, and a fixing column accommodating cavity (231) is arranged on the first insulating assembly (230) at a position corresponding to the second conductor fixing column.

5. The connector assembly according to claim 4, wherein: an elastic protection ring (225) is arranged at a position, corresponding to the upper end of the protection shell (110), of the fourth conductor (220), the outer diameter of the elastic protection ring (225) in a natural state is larger than the inner diameter of the protection shell (110), the minimum effective outer diameter of the elastic protection ring (225) is smaller than the inner diameter of the protection shell (110), the first insulation assembly (230) is made of an elastic insulation assembly, the inner diameter of the fixing column accommodating cavity (231) in the natural state is smaller than the outer diameter of a second conductor fixing column, and the maximum effective inner diameter of the fixing column accommodating cavity (231) is larger than the outer diameter of the second conductor fixing column.

6. The connector assembly according to claim 1, wherein: one end of the first conductor (120) corresponding to the connector female head (200) is provided with a smooth transition surface which is transited to the outer circumferential surface of the first conductor (120), one end of the second conductor (130) corresponding to the connector female head (200) is provided with a smooth transition surface which is transited to the outer circumferential surface of the second conductor (130), and one end of the first insulating component (230) corresponding to the connector male head (100) is provided with a smooth transition surface which is transited to the outer circumferential surface of the first insulating component (230).

7. The connector assembly according to claim 1, wherein: the first conductor (120) and the fourth conductor (220) are integrally formed by punching, cutting and bending.

8. The connector assembly according to claim 1, wherein: and a plurality of conducting sheet structures which are elastically conducted with the upper end of the first conductor (120) are arranged at the corresponding positions of the fourth conductor (220) on the first conductor (120) and the upper end of the first conductor (120).