CN216085542U

CN216085542U - Opposite-insertion locking connector

Info

Publication number: CN216085542U
Application number: CN202121228222.0U
Authority: CN
Inventors: 窦丹风; 钱志华
Original assignee: Jiangsu Handa Power Technology Co ltd
Current assignee: Jiangsu Handa Power Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-03-18
Anticipated expiration: 2031-06-03

Abstract

The application discloses to inserting locking connector, it includes: the first connector comprises a first body part, and one end, close to the first inserting port, of the first body part is provided with at least one first locking piece; the second connector comprises a second body part, a second locking part matched with the first locking part is arranged at one end, close to the second inserting port, of the second body part, the second locking part is rotatably connected with one end, close to the second inserting port, of the second body part, the second locking part comprises an inner locking ring and an outer locking ring which are fixedly connected, and the safety locking part further comprises a safety locking part, and the safety locking part comprises a first safety locking part arranged on the first body part and a second safety locking part movably connected with the inner locking ring; the outer locking ring is sleeved and fixed on the outer wall of the inner locking ring connected with the second safety locking piece.

Description

Opposite-insertion locking connector

Technical Field

The utility model relates to the technical field of electrical transmission equipment, in particular to an opposite-insertion locking connector used in an electrical line transmission process.

Background

The prior art electrical connector includes a first connector and a second connector which are locked and connected, and the first connector and the second connector which are locked and connected need to be unlocked in an actual use process. In the prior art, unlocking is realized by adopting an external rotation method conventionally, but a connector in practical application is a high-current connector, and is usually electrified, so that the unlocking mode realized by rotation is easy to cause electric leakage and harm to human bodies, and the safety problem exists; in addition, the unlocking is caused by misoperation in actual operation, so that the normal operation and use of the equipment are easily influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an opposite-insertion locking connector, which solves the problems of low unlocking safety coefficient and mistaken unlocking in the prior art.

The embodiment of the utility model provides an opposite-insertion locking connector, which comprises: the first connector comprises a first body part, and one end, close to the first inserting port, of the first body part is provided with at least one first locking piece; the second connector comprises a second body part, a second locking part matched with the first locking part is arranged at one end, close to the second inserting port, of the second body part, the second locking part is rotatably connected with one end, close to the second inserting port, of the second body part, the second locking part comprises an inner locking ring and an outer locking ring which are fixedly connected, and the safety locking part further comprises a safety locking part, and the safety locking part comprises a first safety locking part arranged on the first body part and a second safety locking part movably connected with the inner locking ring; the outer locking ring is sleeved and fixed on the outer wall of the inner locking ring connected with the second safety locking piece; when the first locking part and the second locking part are in a locking state, the second locking part is stopped at the first safety locking part, and the second locking part can be limited to rotate along the circumferential direction of the second connector.

In a preferred implementation, the locking device further comprises a safety locking member for limiting rotation of the second locking member when the first connector and the second connector are locked.

In a preferred implementation manner, at least one locking protrusion is arranged on the inner wall surface of the inner locking ring.

In a preferred implementation manner, an accommodating portion is provided on an outer wall surface of the inner locking ring, the second safety locking piece is accommodated in the accommodating portion and movably connected with the inner locking ring, and the second safety locking piece can be displaced in the accommodating portion along an axial direction of the second locking piece; the first safety lock catch piece is positioned on the outer wall surface of the first body part close to the first inserting port and is adjacent to the first lock catch piece.

In a preferred implementation manner, the first safety lock catch piece is a first safety lock catch groove, the first safety lock catch groove includes a first inlet groove connected to the first insertion port, the first inlet groove includes a first stop surface and a second stop surface opposite to each other in the circumferential direction of the first body, and further includes a third stop surface opposite to the first insertion port in the axial direction of the first body, one side of the third stop surface is connected to the bottom of the first inlet groove, the other side of the third stop surface is connected to the outer wall surface of the first body, and the inclination direction of the third stop surface is inclined from the outer wall of the first body to one side of the first insertion port.

In a preferred implementation manner, an included angle between each of the first stop surface and the second stop surface and a plane where the groove bottom of the first safety lock catch groove is located is less than or equal to 90 °.

In a preferred implementation manner, the first safety locking groove further includes a second groove located on a side of the first inlet groove away from the first inserting port, the second groove includes a fourth stop surface, and the fourth stop surface and the third stop surface are arranged in the axial direction of the first body portion.

In a preferred implementation manner, an unlocking portion is arranged on one side surface, close to the outer locking ring, of the second safety locking piece, and the outer locking ring is provided with an unlocking hole exposing the unlocking portion; and the outer wall surface of the outer lock buckle is provided with threads.

In a preferred implementation manner, the accommodating portion includes a stepped hole, and the stepped hole includes a stop portion disposed oppositely and an accommodating hole penetrating through the stop portion;

the second safety lock catch piece comprises a base, an elastic arm and a connecting part, wherein the elastic arm is positioned on one side, close to the inner wall surface of the inner lock catch ring, of the base, the connecting part is positioned between the base and the elastic arm, and two displacement grooves which are arranged in a back-to-back mode are formed among the base, the elastic arm and the connecting part;

the two opposite stopping parts are respectively positioned in the displacement groove, two ends of the base, which are positioned on the circumferential direction of the inner lock catch ring, are respectively stopped at one side face, which is close to the outer lock catch ring, of the stopping part, the connecting part is positioned in the accommodating hole, and the elastic arm protrudes to the inner wall face of the inner lock catch ring through the accommodating hole.

In a preferred implementation, the second safety catch element further includes an extension portion extending from one end of the base along an axial direction of the inner catch ring, the accommodating portion further includes an accommodating groove, the accommodating portion and the accommodating groove are arranged along the axial direction of the inner catch ring, and the extension portion is located in the accommodating groove.

In a preferred implementation, the length of the stepped bore in the axial direction of the connector is greater than or equal to the length of the first inlet groove.

In a preferred implementation, when the first connector and the second connector are locked, the elastic arm of the second safety locking element is stopped at the first stop surface and the second stop surface in the first entrance slot, so as to limit the mutual rotation between the first connector and the second connector.

The first locking piece is a locking groove which comprises a second inlet groove close to the first inserting port and a locking groove positioned on one side of the second inlet groove far away from the first inserting port, a blocking bulge is arranged between the second inlet groove and the locking groove, the side surface of the blocking bulge positioned on the second inlet groove is a first guide inclined plane, and the first guide inclined plane extends obliquely from the top surface of the blocking bulge to the direction close to the first inserting port and is connected with the bottom of the inlet groove; the locking groove comprises two first side surfaces which are arranged at intervals along the circumferential direction of the first body part and two second side surfaces which are arranged at intervals along the axial direction of the first body part; at least one first side surface is an unlocking guide inclined surface, and an angle formed between the unlocking guide inclined surface and the bottom surface of the locking groove is larger than 90 degrees.

A better implementation manner further includes an unlocking groove, the unlocking groove is located on one side of the locking groove and is arranged along the circumferential direction of the first body portion with the locking groove, one side of the unlocking guide inclined plane is connected with the unlocking groove, the other side of the unlocking guide inclined plane is connected with the locking groove, and the depth of the unlocking groove is smaller than the depth of the locking groove.

In a preferred implementation manner, the second entrance slot further includes a guiding inclined plane located at a side of the first guiding inclined plane close to the first insertion port, and the guiding inclined plane can push the locking protrusion into the first guiding inclined plane.

According to a better implementation mode, at least one groove is formed in the outer wall surface of one end, located at the second inserting port, of the second body, a protrusion matched with the groove is formed in the inner wall surface of the second locking piece, and the second locking piece rotates in the groove through the protrusion to achieve rotary connection of the second locking piece and the second body portion.

In a preferred implementation manner, when the first connector is mated with the second connector, the first inserting port of the first connector is inserted between the outer wall surface of the second connector and the second locking piece.

In a preferred implementation, an arc length of each groove in a circumferential direction of the second body portion is greater than or equal to a maximum arc length of each second inlet slot in a circumferential direction of the first body portion.

The utility model provides a plug-in locking connector, which comprises: the first connector comprises a first body part, and one end, close to the first inserting port, of the first body part is provided with at least one first locking piece; the second connector comprises a second body part, a second locking part matched with the first locking part is arranged at one end, close to the second inserting port, of the second body part, the second locking part is rotatably connected with one end, close to the second inserting port, of the second body part, the second locking part comprises an inner locking ring and an outer locking ring which are fixedly connected, and the safety locking part further comprises a safety locking part, and the safety locking part comprises a first safety locking part arranged on the first body part and a second safety locking part movably connected with the inner locking ring; the outer locking ring is sleeved and fixed on the outer wall of the inner locking ring connected with the second safety locking piece; when the first locking part and the second locking part are in a locking state, the second locking part is stopped at the first safety locking part, and the second locking part can be limited to rotate along the circumferential direction of the second connector. According to the utility model, by arranging the safety locking fastener and arranging the pre-unlocking mode before unlocking, the problems of low unlocking safety coefficient and mistaken unlocking in the prior art are effectively solved.

Drawings

Other features, objects and advantages of the utility model will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

FIG. 1 is a schematic view of the construction of a first connector and a second connector of the plug-and-lock connector of the present application;

FIG. 2 is a schematic view of a first connector of the plug-and-lock connector of the present application;

fig. 3-4 are schematic views of the second latch member of the second connector of the plug-and-lock connector of the present application assembled;

FIG. 5 is a second latch member of the second connector of the plug-and-lock connector of the present application, shown disassembled;

fig. 6 is a schematic view of a second one of the security catches of the plug-and-lock connector of the present application;

FIG. 7 is a partial structural view of the second body of the second connector of the plug-and-lock connector of the present application at the second mating port;

FIG. 8 is a cross-sectional view of the second latch member of the second connector of the over-the-plug locking connector of the present application in engagement with the second body portion;

fig. 9 is a schematic view of the first and second locking elements of the plug-in locking connector of the present application for locking and unlocking the first and second locking elements when the first and second connectors are plug-in locked.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating the examples of the present application.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

The opposite-insertion locking connector comprises a first connector, wherein the first connector comprises a first body part, and a first locking piece is arranged at one end, close to a first insertion port, of the first body part; the second connector comprises a second body part, a second locking piece matched with the first locking piece is arranged at one end, close to the second inserting port, of the second body part, the second locking piece is rotatably connected with one end, close to the second inserting port, of the second body part, and the first locking piece and the second locking piece can be unlocked by rotating the second locking piece; the lock catch further comprises a safety lock catch piece, and when the first lock catch piece and the second lock catch piece are in a locking state, the safety lock catch piece limits the second lock catch piece to rotate. According to the utility model, by arranging the safety locking fastener and arranging the pre-unlocking mode before unlocking, the problems of low unlocking safety coefficient and mistaken unlocking in the prior art are effectively solved.

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Some well-known structures are shown hidden or transparently in the figure for the sake of clarity in illustrating the structures associated with the present invention.

The specific structure of the locking connector is described in detail below with reference to fig. 1 to 9, and specifically as follows:

a plug-and-lock connector as described with reference to fig. 1-2, comprising: the first connector 1, the first connector 1 includes a first body 10, and a first locking member 11 is disposed at an end of the first body 10 close to the first socket 100; the second connector 2 comprises a second body part 20, a second locking piece 21 matched with the first locking piece 11 is arranged at one end, close to the second insertion port 200, of the second body part 20, the second locking piece 21 is rotatably connected with one end, close to the second insertion port 200, of the second body part 20, and the first locking piece 11 and the second locking piece 21 can be unlocked by rotating the second locking piece 21; the safety lock catch device further comprises a safety lock catch member 3, and when the first locking member 11 and the second locking member 21 are in a locking state, the safety lock catch member 3 limits the rotation of the second locking member 21. According to the utility model, by arranging the safety locking fastener and arranging the pre-unlocking mode before unlocking, the problems of low unlocking safety coefficient and mistaken unlocking in the prior art are effectively solved.

Referring to the schematic structural diagrams of the first connector 1 shown in fig. 1-2, the first connector 1 includes a first body 10, and the first body 10 includes a first socket 100. One end of the first body 10 close to the first socket 100 is provided with at least one first locking member 11, and the plurality of first locking members 11 are disposed on the outer wall surface of the first body 10 and distributed along the circumference of the first body 10.

The first locking member 11 is a locking groove, and includes a second inlet groove 12 close to the first socket 100, and a locking groove 13 located on a side of the second inlet groove 12 away from the first socket 100. A blocking protrusion 14 is arranged between the second inlet groove 12 and the locking groove 13, a first guiding inclined plane is arranged on the side surface of the blocking protrusion 14, which is located on the second inlet groove 12, and the first guiding inclined plane extends obliquely from the top surface of the blocking protrusion 14 to the direction close to the first insertion port 100 and is connected with the groove bottom of the second inlet groove 12. The top surface of the blocking projection 14 refers to the surface of the blocking projection 14 opposite to the bottom of the second inlet groove.

The locking groove 13 includes two opposite first side surfaces 130 arranged at intervals along the circumferential direction of the first body portion 10, and two opposite second side surfaces (not numbered) arranged at intervals along the axial direction of the first body portion 10. At least one of the first side surfaces 130 is an unlocking guide inclined surface, one side of the unlocking guide inclined surface is connected with the outer wall surface, the other side of the unlocking guide inclined surface is connected with the bottom surface of the locking groove 13, an angle formed between the unlocking guide inclined surface and the bottom surface of the locking groove 13 is larger than 90 degrees, and the locking protrusion of the second locking piece can be conveniently removed from the locking groove 13 to realize unlocking.

A preferred embodiment may further include an unlocking groove 15, wherein the unlocking groove 15 is located at one side of the locking groove 13 and is aligned with the locking groove 13 along the circumferential direction of the first body part 10. One side of the unlocking guide inclined plane 130 is connected with the unlocking groove 15, the other side of the unlocking guide inclined plane 130 is connected with the locking groove 13, and the depth of the unlocking groove 15 is smaller than that of the locking groove 13, so that the locking buckle protrusion can be conveniently moved out of the locking groove 13.

When the first connector and the second connector need to be unlocked, the second locking member is driven to slide into the unlocking groove 15 from the locking groove 13 through the unlocking guide inclined plane 130 only by rotating the second locking member, so that unlocking is realized.

In a preferred embodiment, the second inlet slot 12 further comprises a guiding slope 120 located at a side of the first guiding slope close to the first socket 100.

The guide slope 120 functions as: when the first connector and the second connector need to be locked, the first inserting port 100 of the first connector 1 is inserted into the second inserting port 200 of the second connector, and when the second inlet groove 12 is opposite to the locking protrusion of the second locking piece of the second connector, the locking protrusion is inserted into the locking groove 13 through the first guide inclined plane to realize locking; when the second entrance slot 12 deviates from the locking protrusion of the second locking member of the second connector, the locking protrusion can be restored to the position opposite to the first guiding inclined plane by the guiding inclined plane 120 located at the side of the first guiding inclined plane, and at this time, the locking protrusion can be pushed into the locking slot to realize locking only by applying a relative force.

When at least one first locking part is a plurality of, a plurality of first locking parts 11 are evenly distributed along the circumference of the first body part 10, so that the locking or unlocking force is even, and the connector is not easy to damage.

Reference is made to the second connector 2 shown in fig. 3-6. The second connector 2 with the first connector 1 cooperation, the second connector 2 include with first hasp piece 11 complex second hasp piece 21, through rotating the unblock of first hasp piece 11 and second hasp piece 21 can be realized to second hasp piece 21, realizes the unblock of first connector 1 and second connector 2 promptly.

The second connector 2 includes a second main body 20, the second main body 20 includes a second socket 200, and the second locking element 21 is disposed on an outer wall surface of the second main body 20 and is close to the second socket 200. The second locking piece 21 is rotatably connected with one end of the second body 20 close to the second interface 200; when the first connector 1 and the second connector 2 are plugged into each other, the second plug interface 200 is plugged into the first plug interface 100 of the first connector, and the second locking member 21 can cooperate with the first locking member 11 located on the first body portion of the first connector and close to the first plug interface 100, so as to lock the first connector 1 and the second connector 2.

Preferably, the second locking member 21 includes an inner locking ring 210 and an outer locking ring 220 fixedly connected, and at least one locking protrusion 214 provided on an inner wall surface of the inner locking ring 210; the accommodating portion 211 is disposed on an outer wall surface of the inner locking ring 210, the second safety locking piece 31 is movably connected to the inner locking ring 210, and the outer locking ring 220 is sleeved outside the inner locking ring 210 connected with the second safety locking piece 31; the inner snap ring 210 can rotate synchronously with respect to the second body portion by rotating the outer snap ring 220, which facilitates the unlocking operation.

One side of the second safety locking member 31 close to the outer locking ring 220 is provided with an unlocking portion 32, and the outer locking ring 220 is provided with an unlocking hole 221 exposing the unlocking portion 32. The insertion of an external tool to exert an unlocking force on the second safety catch member 31 is facilitated.

The inner wall surface of the second locking member 21 includes at least one locking protrusion 214, and the locking protrusions 214 are distributed along the circumferential direction of the inner locking ring 210. The number of the locking projections 214 is the same as that of the first locking pieces 11.

In a preferred embodiment, the locking protrusion 214 is resilient. Specifically, a gap is formed between the wall surface connected to the locking projection 214 and the inner wall surface of the inner locking ring 210. Facilitating deformation of the latching projections 214 when the first and second connectors are locked.

In a preferred embodiment, in order to realize the rotational connection between the second locking element 21 and the second body 20, specifically, at least one groove 201 is disposed on an outer wall surface of the second body at one end of the second insertion port 200, a protrusion 215 matching with the groove is disposed on an inner wall surface of the second locking element 21, and the second locking element 21 rotates in the groove 201 through the protrusion 215 to realize the rotational connection between the second locking element 21 and the second body 20. The arc length of each groove 201 in the circumferential direction of the second body portion 20 is greater than or equal to the maximum arc length of each second inlet slot 12 in the circumferential direction of the first body portion 10.

Specifically, refer to fig. 7-8, which are partial schematic views of the second body portion, and cross-sectional schematic views of the second locking element rotatably connected to the second body portion.

When the first connector 1 is matched with the second connector 2, the first socket 100 of the first connector 1 is inserted between the outer wall surface of the second connector 2 and the second locking piece 21; when the first connector 1 and the second connector 2 are locked and connected, when the protrusion 215 is located on the first side of the groove 201, and the locking protrusion 214 contacts with the inclined guide surface 120, and when the second connector further moves into the second inlet groove 12, the inclined guide surface 120 reversely applies a rotational force to the locking protrusion to drive the second locking member to rotate relative to the second body portion, that is, the protrusion rotates to the second side of the groove, and the locking protrusion 214 can be pushed into the first inclined guide surface, so that the locking protrusion 214 is introduced into the locking groove 13, thereby realizing a locking function between the first connector and the second connector.

Conversely, when the projection 215 is located at the second side of the groove 201 when the first connector 1 is inserted into the second interface 200 of the second connector, the locking projection 214 is located in the second entrance slot 12 and is opposite to the locking slot 13; as the first connector moves further into the second inlet groove 12, the locking function between the first connector and the second connector is realized by the first guide slope so as to guide the locking protrusion 214 into the locking groove 13.

If the locked first connector and the locked second connector need to be unlocked, the locking protrusion on the second locking piece can be pushed into the unlocking groove 15 only by rotating the second locking piece to rotate the protrusion from the second side of the groove to the first side of the groove, so that the unlocking action of the first connector and the second connector is realized.

Preferably, the first side and the second side of the groove 201 are side surfaces in the circumferential direction of the second body portion, so as to realize the rotation of the second locking element relative to the second body portion. In addition, the arc length of each groove 201 in the circumferential direction of the second body portion 20 is restricted to be greater than or equal to the maximum arc length of each second inlet slot 12 in the circumferential direction of the first body portion 10. The unlocking action of the first connector and the second connector can be realized under the condition of a small rotating distance, the operation is simple, and the hard interference of the connector caused by misoperation is reduced.

As shown in fig. 3-6, the safety lock catch element 3 includes a first safety lock catch element 30 disposed on the first body portion 10, and a second safety lock catch element 31 movably connected to the second lock catch element 21; when the first and

second locking elements

11 and 21 are in the locked state, the second locking element 31 is stopped at the first locking element 30, and the second locking element 21 is restricted from rotating along the circumferential direction of the second connector 2.

Preferably, the second locking member 31 is provided with a receiving portion 211, the second safety locking member 31 is received in the receiving portion 211, and the second locking member 31 is displaceable in the axial direction of the second locking member 21 in the receiving portion 211; the first safety locking member 30 is located on the outer wall surface of the first body 10 close to the first insertion opening 100, and is adjacent to the first locking member 11.

The first safety locking device 30 is a first safety locking groove, the first safety locking groove 30 includes a first inlet groove 300 connected to the first socket 100, and the first inlet groove 300 includes a first stop surface 302 and a second stop surface 303 opposite to each other in the circumferential direction of the first body 10. The first body 10 further includes a third stop surface 304 opposite to the first socket 100 in the axial direction, and one side of the third stop surface 304 is connected to the bottom of the first inlet slot 300, and the other side is connected to the outer wall of the first body 10. The third stop surface 304 is inclined from the outer wall of the first body 10 to one side of the first socket 100, and has an included angle greater than 90 ° with the bottom of the first inlet slot 300, so that the second safety catch piece 31 stopped in the first inlet slot 300 can be conveniently separated from the first inlet slot 300 by providing the third stop surface 304 forming an obtuse angle with the first inlet slot 300, and the unlocking of the safety catch piece is realized.

In the embodiment of the present application, the included angle between the first stop surface 302 and the second stop surface 303 and the plane where the groove bottom of the first inlet groove 300 is located is less than or equal to 90 °; when the second safety catch member 31 is located in the first inlet slot, the angle between the first stop surface 302 and the second stop surface 303 and the plane where the slot bottom of the first inlet slot 300 is located is less than or equal to 90 ° to prevent the second safety catch member 31 from rotating in the circumferential direction of the first body 10.

Preferably, the first safety catch groove 30 further includes a second groove 301 located at a side of the first entrance groove 300 far from the first insertion opening 100, the second groove 301 includes a fourth stop surface 305, and the fourth stop surface 305 and the third stop surface 304 are arranged at an interval in the axial direction of the first body 10.

The second locking member 21 of the second connector 2 includes a receiving portion 211, the receiving portion 211 is disposed on the outer wall surface of the inner locking ring 210, the receiving portion 211 includes a stepped hole 212 penetrating through the outer wall surface of the inner locking ring, the stepped hole 212 includes two stopping portions 2120 opposite to each other along the circumferential direction of the inner locking ring 210, and a receiving hole 2121 penetrating through the stopping portions 2120 and located between the two opposite stopping portions 2120.

The second safety locking element 31 includes a base 310, a flexible arm 311 located on one side of the base 310 close to the inner wall surface of the inner locking ring 210, and a connecting portion 313 located between the base 310 and the flexible arm 311, wherein two displacement grooves 314 are formed between the base 310, the flexible arm 311, and the connecting portion 313 in a reverse arrangement.

The two opposite stop portions 2120 of the second locking element 21 are respectively located in the displacement groove 314, the two ends of the base 310 located on the circumferential direction of the inner locking ring 210 are respectively located on one side of the stop portion 2120 close to the outer locking ring 220, the connecting portion 313 is located in the accommodating hole 2121, and the elastic arm 311 protrudes to the inner wall surface of the inner locking ring 210 through the accommodating hole 2121 to cooperate and lock with the first safety locking groove 300 of the first connector when the first connector and the second connector are plugged.

Preferably, the second safety catch member 31 further includes an extension 315 extending from one end of the base 310 in the axial direction of the inner catch ring 210, and the receiving portion 214 further includes a receiving groove 213, and the stepped hole 212 and the receiving groove 213 are aligned in the axial direction of the inner catch ring 210. When the second safety catch part 31 is slidably connected to the receiving portion 211 of the inner catch ring 210, the extension 315 of the second safety catch part is located in the receiving groove 213. The outer locking ring 220 is sleeved and fixed outside the inner locking ring 210 connected with the second safety locking piece 31, and the outer locking ring 220 limits the second safety locking piece 31 from falling off in the direction perpendicular to the axial direction.

In a preferred embodiment, the length of the stepped hole 2121 in the axial direction of the first connector is greater than or equal to the length of the first inlet slot 300 of the first safety catch member of the first connector.

Specifically, reference is made to fig. 9 showing the locked and unlocked states of second security catch member 31 and first security catch member 30 after the first connector and the second connector are locked.

When the first connector 1 and the second connector 2 are plugged and locked with each other, the resilient arm of the second safety latch 31 is accommodated in the first entrance slot 300 of the first connector 1, and is located on the first stop surface and the second stop surface at the circumferential top of the first connector, so as to prevent the second connector from rotating along the circumferential direction of the second connector. When the elastic arm of the second safety lock catch piece 31 is located in the first inlet slot, it is still located at the third stop surface. At this time, if the first connector 1 and the second connector 2 need to be unlocked, the locking member 3 needs to be unlocked in advance, and the locking member is inserted into the unlocking hole 221 of the second locking member 21 through an external tool, is matched with the unlocking portion 32 of the second locking member 31, and is applied in a direction toward the first connector 1, so that the elastic arm of the second locking member 31 interferes with the third stop surface, and the unlocking of the second locking member and the first locking member is realized through the third stop surface. Because the length of the stepped hole 2121 in the axial direction of the second connector is greater than or equal to the length of the first inlet groove 300, the second safety lock catch piece is located in the stepped hole after being locked and unlocked, and the second safety lock catch piece moves in the accommodating part along the axial direction, so that the second safety lock catch piece is prevented from falling off to other parts when the safety lock catch piece is unlocked, and the normal plugging use of the first connector and the second connector is influenced.

Preferably, the length of the stepped hole 2121 in the second connector axial direction is greater than or equal to 2 times the length of the

first inlet slot

300 or 2 times the length of the resilient arm in the second connector axial direction.

Preferably, a side surface of the elastic arm close to the first connector is provided with an inclined surface matched with the third stop surface, so that when the second safety lock catch piece is unlocked, the second safety lock catch piece is easily pushed away from the first inlet groove of the first safety lock catch piece, pre-safety unlocking is realized, and the circumferential rotation force of the second lock catch piece can be released.

According to the utility model, by arranging the safety locking fastener and arranging the pre-unlocking mode before unlocking, the problems of low unlocking safety coefficient and mistaken unlocking in the prior art are effectively solved.

In accordance with the above embodiments of the present invention, these embodiments do not set forth all of the details nor limit the utility model to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model and various embodiments with various modifications as are suited to the particular use contemplated. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pluggable locking connector, comprising: the first connector comprises a first body part, and one end, close to the first inserting port, of the first body part is provided with at least one first locking piece; the second connector comprises a second body part, a second locking part matched with the first locking part is arranged at one end, close to the second inserting port, of the second body part, the second locking part is rotatably connected with one end, close to the second inserting port, of the second body part, the second locking part comprises an inner locking ring and an outer locking ring which are fixedly connected, and the safety locking part further comprises a safety locking part, and the safety locking part comprises a first safety locking part arranged on the first body part and a second safety locking part movably connected with the inner locking ring; the outer locking ring is sleeved and fixed on the outer wall of the inner locking ring connected with the second safety locking piece; when the first locking part and the second locking part are in a locking state, the second locking part is stopped at the first safety locking part, and the second locking part can be limited to rotate along the circumferential direction of the second connector.

2. The plug-and-lock connector according to claim 1, wherein: the inner wall surface of the inner lock catch ring is provided with at least one lock catch bulge.

3. The plug-and-lock connector according to claim 2, wherein: the outer wall surface of the inner lock catch ring is provided with an accommodating part, the second safety lock catch piece is accommodated in the accommodating part and movably connected with the inner lock catch ring, and the second safety lock catch piece can move in the accommodating part along the axial direction of the second lock catch piece; the first safety lock catch piece is positioned on the outer wall surface of the first body part close to the first inserting port and is adjacent to the first lock catch piece.

4. The plug-and-lock connector according to claim 3, wherein: the first safety lock catch piece is a first safety lock catch groove, the first safety lock catch groove comprises a first inlet groove connected with the first inserting port, the first inlet groove comprises a first stop surface and a second stop surface which are opposite to each other in the circumferential direction of the first body, the first safety lock catch groove further comprises a third stop surface which is opposite to the first inserting port in the axial direction of the first body, one side of the third stop surface is connected with the bottom of the first inlet groove, the other side of the third stop surface is connected with the outer wall surface of the first body, and the inclination direction of the third stop surface is inclined towards one side of the first inserting port from the outer wall surface of the first body.

5. The plug-and-lock connector according to claim 4, wherein: the included angle between the first stop surface and the plane where the second stop surface is respectively located and the bottom of the first safety lock catch groove is smaller than or equal to 90 degrees.

6. The plug-and-lock connector according to claim 5, wherein: the first safety lock catch groove further comprises a second groove which is located on one side, away from the first inserting port, of the first inlet groove, the second groove comprises a fourth stop surface, and the fourth stop surface and the third stop surface are arranged in the first body portion in the axial direction.

7. The plug-and-lock connector according to claim 1, wherein: an unlocking part is arranged on one side face, close to the outer locking ring, of the second safety locking part, and an unlocking hole exposing the unlocking part is formed in the outer locking ring;

and the outer wall surface of the outer lock buckle is provided with threads.

8. The plug-and-lock connector according to claim 3, wherein: the accommodating part comprises a step hole, the step hole comprises a stop part which is arranged oppositely, and an accommodating hole which penetrates through the stop part;

9. The plug-and-lock connector according to claim 8, wherein: the second safety lock catch piece further comprises an extension part extending from one end of the base along the axial direction of the inner lock catch ring, the accommodating part further comprises an accommodating groove, the stepped hole and the accommodating groove are arranged along the axial direction of the inner lock catch ring, and the extension part is located in the accommodating groove.

10. The plug-and-lock connector according to claim 8, wherein: a length of the stepped bore in an axial direction of the connector is greater than or equal to a length of the first inlet groove; preferably, in an axial direction of the connector, a length of the stepped hole is greater than or equal to 2 times a length of the first inlet groove or 2 times a length of the elastic arm in the axial direction.

11. The plug-and-lock connector according to claim 8, wherein: when the first connector and the second connector are locked, the elastic arm of the second safety lock catch piece is stopped at the first stop surface and the second stop surface in the first inlet groove, so that the mutual rotation between the first connector and the second connector can be limited.

12. The plug-and-lock connector according to claim 2, wherein: the first locking piece is a locking groove which comprises a second inlet groove close to the first inserting port and a locking groove positioned on one side of the second inlet groove far away from the first inserting port, a blocking bulge is arranged between the second inlet groove and the locking groove, the side surface of the blocking bulge positioned on the second inlet groove is a first guide inclined plane, and the first guide inclined plane extends obliquely from the top surface of the blocking bulge to the direction close to the first inserting port and is connected with the bottom of the inlet groove; the locking groove comprises two first side surfaces which are arranged at intervals along the circumferential direction of the first body part and two second side surfaces which are arranged at intervals along the axial direction of the first body part; wherein at least one of the first side surfaces is an unlocking guide inclined surface,

an angle formed between the unlocking guide slope and the bottom surface of the locking groove is greater than 90 °.

13. The plug-and-lock connector according to claim 12, wherein: the locking device is characterized by further comprising an unlocking groove, wherein the unlocking groove is located on one side of the locking groove and is arranged along the circumferential direction of the first body part, one side of the unlocking guide inclined plane is connected with the unlocking groove, the other side of the unlocking guide inclined plane is connected with the locking groove, and the depth of the unlocking groove is smaller than that of the locking groove.

14. The plug-and-lock connector according to claim 13, wherein: the second inlet slot further comprises a guide inclined surface which is positioned on one side of the first guide inclined surface close to the first inserting port, and the lock catch protrusion can be pushed into the first guide inclined surface by the guide inclined surface.

15. The plug-and-lock connector according to claim 14, wherein: the outer wall surface of one end, located at the second inserting port, of the second body part is provided with at least one groove, the inner wall surface of the second locking piece is provided with a protrusion matched with the groove, and the second locking piece rotates in the groove through the protrusion to achieve rotary connection of the second locking piece and the second body part.

16. The plug-and-lock connector according to claim 15, wherein: when the first connector is matched with the second connector, the first inserting port of the first connector is inserted between the outer wall surface of the second connector and the second locking piece;

an arc length of each of the grooves in a circumferential direction of the second body portion is greater than or equal to a maximum arc length of each of the second inlet grooves in a circumferential direction of the first body portion.