CN113036494B

CN113036494B - High-current overcurrent plug electric connector

Info

Publication number: CN113036494B
Application number: CN202110248330.2A
Authority: CN
Inventors: 罗家健; 张锴; 吴增朗; 吴伟豪
Original assignee: Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2021-03-07
Filing date: 2021-03-07
Publication date: 2023-04-21
Anticipated expiration: 2041-03-07
Also published as: CN113036494A

Abstract

The invention discloses a high-current overcurrent plug electric connector, which comprises: a first connector including a cylindrical first body and a first terminal fixed to an inside of the first body; the first terminal comprises a conductive plug connector provided with a conductive slot, and a plurality of conductive elastic sheets are arranged at intervals along the axis direction of the conductive slot; a second connector including a cylindrical second body and a second terminal fixed to an inside of the second body; when the second body is connected with the first body in an inserting mode, the second terminal is inserted into the conductive slot, and the outer wall of the second terminal abuts against the conductive elastic piece. This big electric current flows plug electric connector, at first body and second body to the in-process of inserting the connection, the second terminal can strut a plurality of electrically conductive shell fragments in proper order, has both effectively increased the electric contact point, has increased area of contact again, can reduce contact resistance, improves current bearing capacity, and application scope is wide, connects the reliability height.

Description

High-current overcurrent plug electric connector

Technical Field

The invention relates to the field of cable connectors, in particular to a high-current overcurrent plug-in electric connector.

Background

In the power transmission line, it is necessary to electrically connect two cables by using a cable connector, and the cable connector can be used for connection between various transmission devices, connection between various communication devices, extension of cable length, and the like.

The plug-in type electric connector in the current market adopts a plug-in mode to realize the electric connection of electric devices or electric equipment on two sides, but the electric connector has limited current carrying capacity and limited application range.

Disclosure of Invention

The aim of the embodiment of the invention is that: the high-current overcurrent plug electric connector is good in current carrying capacity, wide in application range and high in connection reliability.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a high current over-current pluggable electrical connector comprising:

a first connector including a cylindrical first body and a first terminal fixed to an inside of the first body; the first terminal comprises a conductive plug connector provided with a conductive slot and a plurality of conductive elastic sheets arranged at intervals along the axis direction of the conductive slot;

a second connector including a cylindrical second body and a second terminal fixed to an inside of the second body; when the second body is in plug connection with the first body, the second terminal is inserted into the conductive slot, and the outer wall of the second terminal abuts against the conductive elastic sheet.

Preferably, the conductive spring piece comprises a first spring piece part, a second spring piece part and a third spring piece part which are sequentially connected; the first elastic piece part and the third elastic piece part are bent relative to the second elastic piece part;

the conductive plug connector is provided with a mounting hole which extends along the radial direction and is communicated with the conductive slot, the third elastic piece part is positioned in the conductive slot, the second elastic piece part is arranged in the mounting hole in a penetrating way, and the first elastic piece part is abutted against the outer wall of the conductive plug connector; when the second body is in plug connection with the first body, the outer wall of the second terminal abuts against the third elastic piece part.

Preferably, a fixing groove is formed in the outer wall of the conductive plug connector, the first elastic sheet portion is embedded in the fixing groove, and the first elastic sheet and the conductive plug connector are fixed through a conductive bonding layer.

Preferably, the conductive plug connector comprises a first conductor and a second conductor, wherein the first conductor is provided with a mounting groove, and the second conductor comprises a cylindrical part provided with the conductive slot and a connecting part detachably connected with the first conductor; the outer wall of the cylindrical part is abutted with the mounting groove; the conductive elastic sheet is fixed on the cylindrical part.

Preferably, the conductive plug connector is a copper plug connector, and the conductive elastic sheet is a copper elastic sheet; the first terminal comprises at least four conductive spring pieces.

Preferably, the first terminal includes a plurality of groups of elastic sheet groups, each group of elastic sheet groups includes a plurality of conductive elastic sheets uniformly spaced along the axial direction of the conductive slot, and the conductive elastic sheets in different elastic sheet groups are staggered along the axial direction of the conductive slot.

Preferably, the first body is provided with a non-return part;

the second body comprises a plurality of elastic claws which are arranged at intervals along the circumferential direction, and the end parts of the elastic claws are clamping blocks; when the second connector is positioned at the locking position, the second connector is in opposite insertion connection with the first connector, and the clamping block is clamped with the non-return part;

the auxiliary sleeve comprises a base sleeve and a plurality of unlocking blocks connected with the base sleeve; the unlocking blocks are arranged at intervals along the circumferential direction; the base sleeve is movably connected with the second body, and can rotate relative to the second body, so that the auxiliary sleeve rotates to an unlocking position where the unlocking block is abutted with the clamping block, or rotates to a protection position where the unlocking block and the clamping block are mutually staggered in the circumferential direction; when the auxiliary sleeve is positioned at the unlocking position, the unlocking block can move along the axial direction to the direction far away from the first connector so as to push the clamping block to move along the radial direction to the direction far away from the non-return part, so that the clamping block is separated from the non-return part.

Preferably, an unlocking positioning groove is formed in the auxiliary sleeve, and an unlocking positioning block is arranged on the second body; or an unlocking positioning block is arranged on the auxiliary sleeve, and an unlocking positioning groove is arranged on the second body;

the unlocking positioning groove comprises a first groove part extending along the circumferential direction and a second groove part extending along the axial direction; the first groove part is communicated with the second groove part;

the unlocking positioning block is clamped with the unlocking positioning groove; when the auxiliary sleeve rotates relative to the second body, the unlocking positioning block moves in the first groove part; when the unlocking positioning block is axially aligned with the second groove part, the auxiliary sleeve is positioned at the unlocking position.

Preferably, the unlocking positioning groove is arranged on the auxiliary sleeve, and the unlocking positioning block is arranged on the second body and protrudes outwards relative to the second body.

Preferably, a plurality of unlocking positioning grooves are formed in the auxiliary sleeve at intervals along the circumferential direction.

The beneficial effects of the invention are as follows: this big electric current flows plug electric connector, at first body and second body to the in-process of inserting the connection, the second terminal can strut a plurality of electrically conductive shell fragments in proper order, has both effectively increased the electric contact point, has increased area of contact again, can reduce contact resistance, improves current bearing capacity, and application scope is wide, connects the reliability height.

Drawings

The invention is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a first terminal according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a first terminal according to another embodiment of the present invention;

FIG. 3 is a schematic diagram of a conductive plug according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a first connector according to an embodiment of the invention;

fig. 5 is a schematic structural view of a first connector according to another embodiment of the invention;

fig. 6 is a schematic structural diagram of a second connector according to an embodiment of the invention;

FIG. 7 is a schematic view of an electrical connector according to an embodiment of the present invention (the second connector is shown in a locked position);

fig. 8 is an enlarged view of a portion a in fig. 7;

fig. 9 is an enlarged view of a portion B in fig. 7;

fig. 10 is a schematic structural view of an electrical connector according to an embodiment of the present invention, in which the auxiliary sleeve is located at an unlock position;

fig. 11 is an enlarged view of a portion C in fig. 10;

fig. 12 is an enlarged view of a portion D in fig. 10;

FIG. 13 is a schematic view of one of the mating states of the secondary sleeve and the second connector according to the embodiment of the present invention (the secondary sleeve is shown in the unlocked position);

FIG. 14 is a schematic view of a second mating state of the secondary sleeve and the second connector according to the embodiment of the present invention (the secondary sleeve is in the protecting position);

FIG. 15 is a schematic view illustrating one of the matching states of the unlocking positioning block and the unlocking positioning slot according to the embodiment of the present invention;

FIG. 16 is a diagram illustrating a second mating state of the unlocking positioning block and the unlocking positioning slot according to an embodiment of the present invention;

FIG. 17 is a diagram illustrating a third embodiment of the engagement between the unlocking positioning block and the unlocking positioning slot;

fig. 18 is a schematic structural view of a secondary sleeve of the electrical connector according to an embodiment of the present invention;

in the figure: 10. a first connector; 11. a first body; 111. a guide groove; 112. a convex portion; 1121. a guide end surface; 1122. an anti-drop end surface; 113. a non-return part; 12. a first rubber core; 13. a first terminal; 131. a conductive plug; 1311. a first conductor; 1312. a second conductor; 132. a conductive socket; 133. a conductive spring plate; 1331. a first spring piece part; 1332. a second spring piece part; 1333. a third spring piece part; 134. a mounting hole; 135. a fixing groove; 136. a conductive bonding layer; 20. a second connector; 21. a second body; 211. a first cylinder portion; 2111. unlocking the positioning block; 212. an elastic claw; 2121. a claw body; 2122. a clamping block; 21221. a first surface; 21222. a second surface; 22. a second rubber core; 23. a second terminal; 30. an auxiliary sleeve; 301. a base sleeve; 31. unlocking the block; 311. a plate portion; 312. a hook portion; 32. unlocking the positioning groove; 321. a first groove portion; 3211. a positioning groove wall; 322. a second groove portion; 40. and (3) a sealing ring.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "affixed" and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The invention provides a high-current overcurrent plug-in electric connector which has the advantages of large current bearing capacity, wide application range and high connection reliability.

As shown in fig. 1 to 18, in the high-current overcurrent plug electrical connector of the present invention, the electrical connector includes:

a first connector 10 including a cylindrical first body 11, and a first terminal 13 fixed to the inside of the first body 11; the first terminal 13 includes a conductive plug 131 provided with a conductive slot 132, and a plurality of conductive elastic pieces 133 spaced along the axial direction of the conductive slot 132; the conductive spring plate 133 has a conductive contact portion having a radial elastic force;

a second connector 20 including a cylindrical second body 21, and a second terminal 23 fixed to the inside of the second body 21;

the first body 11 and the second body 21 are suitable for realizing the electric connection between the first terminal 13 and the second terminal 23 in an inserting way;

when the second body 21 is in plug connection with the first body 11, that is, when the second body is plugged in place, the second terminal 23 is plugged in the conductive slot 132, and the outer wall of the second terminal 23 abuts against the conductive elastic sheet 133, so as to realize electrical contact.

Specifically, the first body 11 is provided with a first locking portion, the second body 21 is provided with a second locking portion, when the first body 11 and the second body 21 are inserted in place, the second connector 20 is located at a locking position, and the first locking portion and the second locking portion are in locking fit to maintain an axial relative position between the first body 11 and the second body 21.

Specifically, during the process of inserting the second body 21 and the first body 11, the outer wall of the second terminal 23 abuts against the conductive elastic piece 133, and the second terminal 23 stretches the conductive elastic piece 133, so that the conductive contact portion of the conductive elastic piece 133 moves in a direction approaching to the groove wall of the conductive slot 132; when the second body 21 is inserted into place with the first body 11, the outer wall of the second terminal 23 is kept against the conductive spring 133 under the action of the elastic force of the conductive spring 133.

Specifically, when the first body 11 and the second body 21 are not inserted, a spring gap is formed between the conductive contact portion of the conductive spring 133 and the slot wall of the conductive slot 132.

When the electric connector is applied, one cable is electrically connected with the first terminal 13, the other cable is electrically connected with the second terminal 23, and then the first body 11 and the second body 21 are connected in an opposite-plug manner until the first body and the second body are plugged in place, so that the electric connection between the cables can be realized through the electric contact between the conductive elastic sheet 133 and the second terminal 23.

According to the electric connector, the plurality of conductive elastic pieces 133 are arranged at intervals in the axial direction of the conductive slot 132, so that the second terminal 23 can sequentially prop up the plurality of conductive elastic pieces 133 in the process of oppositely inserting and connecting the first body 11 and the second body 21, the electric contact point is effectively increased, the contact area is increased, the contact resistance is greatly reduced, the current bearing capacity is improved, and the electric connector is suitable for passing large current; in addition, in the electrical connector, when in plug connection, the plurality of conductive elastic pieces 133 simultaneously provide radial inward elastic force for the second terminal 23, so that reliable contact between the conductive elastic pieces 133 and the second terminal 23 can be maintained, and connection reliability is ensured.

Further, in the present embodiment, the first connector 10 further includes an insulating first rubber core 12, the first rubber core 12 is fixed inside the first body 11, and the first terminal 13 is fixed on the first rubber core 12; the second connector 20 further includes an insulating second rubber core 22, the second rubber core 22 is fixed inside the second body 21, and the second terminal 23 is fixed on the second rubber core 22.

Further, for convenience in manufacturing, the conductive spring piece 133 includes a first spring piece portion 1331, a second spring piece portion 1332, and a third spring piece portion 1333 that are sequentially connected; the first elastic piece part 1331 and the third elastic piece part 1333 are bent relative to the second elastic piece part 1332; the third spring piece 1333 is a conductive contact portion;

the conductive plug 131 is provided with a mounting hole 134 extending along a radial direction and communicating with the conductive slot 132, the third elastic piece part 1333 is located inside the conductive slot 132, the second elastic piece part 1332 is arranged in the mounting hole 134 in a penetrating manner, and the first elastic piece part 1331 abuts against the outer wall of the conductive plug 131; when the second body 21 is in plug connection with the first body 11, the outer wall of the second terminal 23 abuts against and is electrically connected with the third spring piece 1333.

In this way, when the first terminal 13 is manufactured, the conductive plug 131 having the mounting hole 134 and the conductive slot 132 is formed by integral molding or punching, then one end of the conductive spring 133 passes through the first mounting hole 134, and then the conductive spring 133 at two ends of the mounting hole 134 is processed to form the first spring piece portion 1331 and the third spring piece portion 1333 by pressing and bending, so that the conductive spring piece 133 can be mounted on the conductive plug 131. The structure is simple, and the processing and the manufacturing are convenient.

In some embodiments, the conductive plug 131 includes a first half plug and a second half plug, and with this structure, the conductive spring piece 133 is more easily and fixedly connected to the conductive plug 131 and electrically connected during manufacturing.

Further, for convenience in manufacturing, the outer wall of the conductive plug 131 is provided with a fixing groove 135, the first spring piece portion 1331 is embedded in the fixing groove 135, and the first spring piece and the conductive plug 131 are fixed by the conductive bonding layer 136.

In the present embodiment, the conductive bonding layer 136 is formed by curing silver-containing solder, which can not only realize the electrical connection between the conductive spring plate 133 and the conductive plug 131, but also fix the conductive spring plate 133 to the conductive plug 131. Of course, in other embodiments, the conductive bonding layer 136 may also be formed by curing other conductive bonding materials.

The electric connector can be reused, and an operator can unlock the locking state between the first locking part and the second locking part so as to separate the first body 11 from the second body 21, thereby realizing the reuse of the electric connector or disassembling and maintaining. Thus, when the service time of the electrical connector is too long, or when the electrical connector is subjected to multiple plugging operations, the elastic failure of the conductive elastic sheet 133 is easy to occur, and the situation that the conductive elastic sheet 133 cannot be tightly abutted against the second terminal 23 is easy to occur, so that the reliability of electrical connection cannot be ensured.

Further, in order to ensure the reliability of the electrical connection while ensuring the current carrying capability, the conductive socket 131 includes a first conductive body 1311 and a second conductive body 1312, the first conductive body 1311 is fixed to the first rubber core 12, the first conductive body 1311 is provided with a mounting groove, and the second conductive body 1312 includes a cylindrical portion provided with the conductive socket 132, and a connection portion (not shown) detachably connected to the first conductive body 1311; the outer wall of the cylindrical part is abutted with the mounting groove; the conductive spring piece 133 is fixed to the cylindrical portion. The second conductor 1312 serves as a mounting base for disposing a plurality of conductive spring plates 133 and providing conductive sockets 132. So configured, the second conductive body 1312 and the conductive spring plate 133 fixed on the second conductive body 1312 form a conductive integrated piece.

The first conductor 1311 and the second conductor 1312 may be detachably connected by a snap connection, an interference fit, or the like.

When the service time of the electric connector is too long, or when the electric connector is subjected to multiple plugging operations, the electric connector is detached and replaced with the electric conduction integrated part, so that the reliability of electric connection between the first terminal 13 and the second terminal 23 can be ensured; in addition, in this embodiment, the second conductor 1312 with smaller radial thickness may be adopted, so that the volume of the detached conductor is smaller when the conductive integrated piece is replaced every time, no waste is caused, and the second conductor 1312 and the first conductor 1311 are detachably connected, so that the volume of the second conductor 1312 can be compensated by the volume of the first conductor 1311, the effective conductive volume of the conductive plug connector 131 is ensured, and thus the current bearing capacity of the electrical connector is improved.

In this embodiment, in order to improve the current carrying capability and the heat dissipation capability, the conductive plug member 131 is a copper plug member, the conductive spring plate 133 is a copper spring plate, the second terminal 23 is a copper terminal, and the resistance of copper is small and the heat dissipation capability is good. Of course, in other embodiments, other conductive materials may be used for the conductive plug 131, the conductive dome 133, and the second terminal 23.

Further, to improve the current carrying capability, the first terminal 13 includes at least four conductive spring plates 133.

Further, in order to improve the current carrying capability and reduce the plugging resistance, the first terminal 13 includes a plurality of groups of spring plate groups, each group of spring plate groups includes a plurality of conductive spring plates 133 uniformly spaced along the axial direction of the conductive slot 132, and the conductive spring plates 133 in different spring plate groups are staggered in the axial direction of the conductive slot 132. The conductive spring pieces 133 are staggered in the axial direction of the conductive slot 132, the ends of the third spring piece portions 1333 are staggered, and the head ends of the third spring piece portions 1333 are staggered.

In a further embodiment of the high-current overcurrent plug electric connector, a plug locking structure and an unlocking structure of the electric connector are provided, so that a plug process is simple and convenient, and meanwhile, plug is stable and reliable; the auxiliary sleeve 30 can be unlocked to separate the two connectors, so that the situation of false unlocking can be avoided, and reliable connection between the two connectors is ensured.

In addition, in the electrical connector of the present invention, when the parts in the first terminal 13 need to be replaced, the sub-sleeve 30 is conveniently unlocked, so that the first connector 10 and the second connector 20 are separated.

Specifically, the first body 11 is provided with a non-return portion 113;

the second body 21 includes a plurality of elastic claws 212 circumferentially spaced apart, and the ends of the elastic claws 212 are clamping blocks 2122; when the second connector 20 is located at the locking position, the second connector 20 is inserted into the first connector 10, and the clamping block 2122 is clamped with the non-return portion 113;

the electric connector further comprises a secondary sleeve 30, wherein the secondary sleeve 30 comprises a base sleeve 301 and a plurality of unlocking blocks 31 connected to the base sleeve 301; the unlocking blocks 31 are arranged at intervals along the circumferential direction; the base sleeve 301 is movably connected with the second body 21, and the base sleeve 301 can rotate relative to the second body 21, so that the auxiliary sleeve 30 rotates to an unlocking position where the unlocking block 31 abuts against the clamping block 2122, or the auxiliary sleeve 30 rotates to a protection position where the unlocking block 31 and the clamping block 2122 are staggered from each other in the circumferential direction; when the sub-sleeve 30 is in the unlocking position, the unlocking block 31 can move in the axial direction away from the first connector 10, so as to push the clamping block 2122 to move in the radial direction away from the non-return portion 113, thereby disengaging the clamping block 2122 from the non-return portion 113.

Specifically, the unlocking block 31 includes a plate portion 311 and a hook portion 312, one end of the plate portion 311 is connected to the base 301, the other end is connected to the hook portion 312, and the hook portion 312 protrudes in the radial direction with respect to the plate portion 311; the plate portion 311 is an elastic plate portion 311, and the plate portion 311 provides radial elastic force to the hook portion 312, wherein the elastic force is used for keeping the hook portion 312 in clamping fit with the non-return portion 113; when the unlocking block 31 moves in the axial direction in a direction away from the first connector 10, the hook portion 312 is pushed against the elastic force provided by the plate portion 311 in the radial direction to disengage the catch 2122 from the catch engagement with the backstop portion 113, thereby releasing the locked state between the second connector 20 and the first connector 10.

In this embodiment, the second body 21 is sleeved outside the first body 11, and the auxiliary sleeve 30 is sleeved outside the second body 21; so configured, when the unlocking block 31 moves in the axial direction away from the first body 11, it is used to push the latch 2122 to move outward in the radial direction to disengage from the check portion 113.

In other embodiments of the present invention, the second body 21 may also be sleeved inside the first body 11, and the auxiliary sleeve 30 is sleeved inside the second body 21. So configured, when the unlocking block 31 moves in the axial direction away from the first body 11, it is used to push the latch 2122 to move inward in the radial direction to disengage from the check portion 113. By doing so, it is possible to prevent an unexpected external force from acting on the clip 2122, ensuring a reliable connection between the first body 11 and the second body 21.

In this embodiment, the check portion 113 is a check groove. In other embodiments, the backstop 113 may be a backstop through hole, backstop bump, or the like.

Specifically, opposite ends of the first body 11 are a first front end and a first rear end, respectively; the opposite ends of the second body 21 are a second front end and a second rear end, respectively.

Specifically, when the electric connector is in use, a first electric connector is arranged in the first body 11, a second electric connector is arranged in the second body 21, the first cable is electrically connected with the first electric connector, the second cable is electrically connected with the second electric connector, and when the second connector 20 is positioned at the locking position, the first electric connector is electrically contacted with the second electric connector, so that connection between the cables is realized.

Specifically, in the circumferential direction, the pitch between adjacent elastic claws 212 is the inter-claw pitch.

Specifically, the elastic claw 212 includes a claw body 2121 having radial opening and closing elasticity, and further includes a clip 2122 provided at an end portion of the claw body 2121.

The plugging process of the electric connector of the embodiment is as follows:

the first front end of the first body 11 is opposite to the second front end of the second body 21;

the first body 11 and the second body 21 move in a pair so that the first body 11 is inserted into the second body 21;

during the process of inserting the first body 11 and the second body 21, the clamping block 2122 on the second body 21 and the non-return portion 113 of the first body 11 approach each other until the clamping block 2122 is clamped into the non-return portion 113, at this time, the surface of the clamping block 2122 facing the first rear end abuts against the surface of the non-return portion 113 facing the second rear end, at this time, the elastic claw 212 provides clamping force for the clamping block 2122, which keeps clamping connection with the radial and axial directions of the non-return portion 113, and the surface of the non-return portion 113 facing the second rear end prevents the clamping block 2122 from moving in a direction away from the first body 11, the non-return portion 113 and the non-return portion of the clamping block 2122 cooperate to prevent the second body 21 from moving in a direction along an axial direction out of the first body 11, so that the second connector 20 is guaranteed to be in a current locking position, and electrical connection between cables is guaranteed.

The electrical connector of the present embodiment can be disassembled when needed, and is convenient to maintain and reuse, and the first connector 10 and the second connector 20 can be unlocked by the following means:

the auxiliary sleeve 30 is rotated to align the unlocking blocks 31 with the clamping blocks 2122 one by one;

the auxiliary sleeve 30 is moved along the axial direction, the unlocking block 31 abuts against and pushes the clamping block 2122, so that the clamping block 2122 moves along the radial direction, and the clamping block 2122 overcomes the elastic force of the elastic claw 212 and is separated from the non-return part 113;

at this time, an external force is applied to pull out the second connector 20 from the first connector 10, thereby releasing the two connectors.

After the electrical connector of the embodiment is plugged, a locking protection operation is required, and the locking protection operation process is as follows:

the pair of sleeves 30 are rotated to stagger the unlocking blocks 31 and the clamping blocks 2122 one by one, so that the unlocking blocks 31 are located in the inter-claw space. In this way, when the auxiliary sleeve 30 is accidentally acted on by friction force or other pushing force, the auxiliary sleeve 30 is accidentally moved in the axial direction, so that the unlocking block 31 of the auxiliary sleeve 30 is prevented from accidentally pushing the clamping block 2122 of the elastic claw 212 to leave the non-return portion 113, and reliable connection between the second connector 20 and the first connector 10 is ensured.

The electric connector of the embodiment not only can be installed through opposite insertion, but also is simple, convenient and quick in installation process and convenient to detach and maintain; at the same time, it is possible to avoid that the sub-sleeve 30 moves axially in an unexpected situation due to an erroneous operation or an external environmental influence, and to unlock the electrical connector, it is possible to ensure a reliable connection between the first connector 10 and the second connector 20.

It should be noted that the plate portion 311 of the elastic claw 212 is configured to provide a large radial locking force to hold the clip 2122 in engagement with the backstop portion 113 in a normal state.

Further, in order to realize that the auxiliary sleeve 30 can rotate relative to the second body 21 and can move along the axial direction relative to the second body 21, the auxiliary sleeve 30 and the second body 21 are movably connected through the cooperation of the unlocking positioning groove 32 and the unlocking positioning block 2111: an unlocking positioning groove 32 is formed in the auxiliary sleeve 30, and an unlocking positioning block 2111 is formed in the second body 21; or, the auxiliary sleeve 30 is provided with an unlocking positioning block 2111, and the second body 21 is provided with an unlocking positioning groove 32;

the unlocking positioning groove 32 comprises a first groove part 321 extending along the circumferential direction and a second groove part 322 extending along the axial direction; the first groove 321 communicates with the second groove 322;

the unlocking positioning block 2111 is clamped with the unlocking positioning groove 32; when the auxiliary sleeve 30 rotates relative to the second body 21, the unlocking positioning block 2111 moves in the first groove 321; when the unlocking positioning block 2111 is axially aligned with the second groove portion 322, the sub-sleeve 30 is located at the unlocking position; when the unlocking positioning block 2111 moves from the first groove 321 to the second groove 322, the unlocking block 31 pushes the clamping block 2122 to move radially outwards.

In this embodiment, for convenience of assembly and for waterproof tightness of the electrical connector, the unlocking positioning groove 32 is provided on the auxiliary sleeve 30, the unlocking positioning block 2111 is provided on the second body 21, and the unlocking positioning block 2111 protrudes outwards relative to the second body 21; the unlocking positioning block 2111 is a T-shaped positioning block, the unlocking positioning groove 32 is a through hole, and the T-shaped positioning block passes through the through hole. The unlocking positioning groove 32 is a through hole, that is, the unlocking positioning groove 32 is a through groove with two ends communicated. So set up, conveniently penetrate unblock locating piece 2111 when making the equipment and unblock constant head tank 32, simultaneously, locate vice cover 30 rather than second body 21 with unblock constant head tank 32 to avoid slotting or trompil on second body 21, both can guarantee the structural strength of second body 21, with terminal and the cable of the inside of protection second body 21, can avoid the problem that the sealing performance that the trompil leads to reduces again.

Further, the second groove 322 is close to the front end of the second body 21 with respect to the first groove 321. When the unlocking positioning block 2111 is positioned at the connection position of the first groove portion 321 and the second groove portion 322 (as shown in fig. 15), or when the unlocking positioning block 2111 is positioned in the second groove portion 322 (as shown in fig. 16), the unlocking blocks 31 of the auxiliary sleeve 30 are adjusted to be aligned with the clamping blocks 2122 of the second body 21 one by one (as shown in fig. 13); when the sub-cover 30 is rotatable about the axis of the second body 21 with respect to the second body 21, the position of the unlocking positioning block 2111 is adjusted from fig. 12 to the position in fig. 14, so that the unlocking block 31 of the sub-cover 30 is adjusted to a position offset from the locking block 2122 of the second body 21 in the circumferential direction (as shown in fig. 14). In fig. 13, the sub-sleeve 30 is in the unlocked position, and in fig. 14, the sub-sleeve 30 is in the protecting position.

When the sub-cover 30 is in the protecting position, the positioning groove wall 3211 in the axial direction of the first groove 321 prevents the sub-cover 30 from moving in the axial direction, and the sub-cover 30 cannot realize the unlocking function.

Further, the interval between two adjacent unlocking blocks 31 is a lock block interval, in the axial direction, the projection of the first portion of the first groove 321 overlaps with the projection of the lock block interval, and when the unlocking positioning block 2111 rotates to the first portion of the first groove 321, the clamping block 2122 of the second body 21 is located at the lock block interval, and at this time, the auxiliary sleeve 30 is located at the protecting position.

As shown in fig. 7 to 11, when the auxiliary sleeve 30 is located at the unlocking position, an operator provides an external force to move the auxiliary sleeve 30 away from the first body 11, so as to achieve the unlocking function of the auxiliary sleeve 30. During unlocking, unlocking locating piece 2111 moves actively or passively within second slot 322.

Further, in order to make the adjustment effect more stable, a plurality of unlocking positioning grooves 32 are circumferentially spaced on the auxiliary sleeve 30, and correspondingly, a plurality of unlocking positioning blocks 2111 are circumferentially spaced on the second body 21.

Further, the check portions 113 are check grooves, and a plurality of check grooves are provided at intervals in the circumferential direction of the first body 11; the non-return grooves are in one-to-one correspondence with the guide grooves 111, and a convex part 112 is arranged between the non-return grooves and the guide grooves 111; an end surface of the protrusion 112 near one end of the guide groove 111 is a guide end surface 1121, and an end surface near one end of the non-return groove is an anti-drop end surface 1122; in the axial direction of the second body 21, opposite surfaces of the non-return portion 113 are a first surface 21221 and a second surface 21222; the top wall of the reverse groove is positioned between the anti-falling end face 1122;

when the second body 21 is in opposite connection with the first body 11, the guiding end face 1121 abuts against the first surface 21221 to provide a reaction force for opening the clamping block 2122 in a radial direction; when the second connector 20 is in the locked position, the second surface 21222 abuts the anti-drop end 1122.

Further, the first surface 21221 is an inclined surface, and the guiding end face 1121 is an inclined surface, so that when the second body 21 is in opposite connection with the first body 11, the guiding inclined surface makes the elastic claw 212 easier to open, so that the clamping block 2122 is clamped into the non-return groove; the second surface 21222 is planar and the anti-disengagement end 1122 is planar, so configured that the second planar surface and the anti-disengagement planar surface can reliably abut to ensure that the second connector 20 is stably maintained in the locked position.

Further, the second body 21 includes a first tube portion 211 and a second tube portion connected to each other, and the second tube portion includes a plurality of the elastic claws 212; the diameter of the first cylinder 211 is the same as the diameter of the first body 11, and the diameter of the second cylinder is larger than the diameter of the first body 11;

when the second connector 20 is in the locked position, an end of the first tube 211 abuts against an end of the first body 11; the second cylinder part is sleeved outside the first body 11; a sealing ring 40 is provided between the first cylindrical portion 211 and the first body 11. By the arrangement, the second barrel part is sleeved outside the first body 11, butt locking of the two connectors is achieved, sealing connection between the second body 21 and the first body 11 can be achieved, air tightness and waterproofness are improved, and safety and reliability are improved.

Further, the first connector 10 further includes a first rubber core 12 detachably fixed to the inside of the first body 11, and a first terminal 13 fixed to the inside of the first rubber core 12;

the second connector 20 further comprises a second rubber core 22 detachably fixed to the inside of the second body 21, and a second terminal 23 fixed to the inside of the second rubber core 22;

when the second connector 20 is in the locked position, the first terminal 13 is in electrical contact with the second terminal 23.

In specific use, the wire core of the first cable penetrates into the first rubber core 12 to be linked with the first terminal 13, the wire core of the second cable penetrates into the second rubber core 22 to be electrically connected with the second terminal 23, and when the second connector 20 is plugged into place with the first connector 10, the first cable is electrically connected with the second cable.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A high current over-current pluggable electrical connector, comprising:

a first connector (10) including a cylindrical first body (11), and a first terminal (13) fixed to the inside of the first body (11); the first terminal (13) comprises a conductive plug connector (131) provided with a conductive slot (132), and a plurality of conductive elastic sheets (133) which are arranged at intervals along the axial direction of the conductive slot (132);

a second connector (20) including a cylindrical second body (21), and a second terminal (23) fixed to the inside of the second body (21); when the second body (21) is in plug connection with the first body (11), the second terminal (23) is inserted into the conductive slot (132), and the outer wall of the second terminal (23) is propped against the conductive elastic sheet (133); a plurality of said conductive clips providing a radially inward spring force to said second terminal (23);

the conductive spring piece (133) comprises a first spring piece part (1331), a second spring piece part (1332) and a third spring piece part (1333) which are connected in sequence; the first elastic piece part (1331) and the third elastic piece part (1333) are bent relative to the second elastic piece part (1332);

the conductive plug connector (131) is provided with a mounting hole (134) which extends along the radial direction and is communicated with the conductive slot (132), the third elastic piece part (1333) is positioned in the conductive slot (132), and the second elastic piece part (1332) is arranged in the mounting hole (134) in a penetrating manner; when the second body (21) is in plug connection with the first body (11), the outer wall of the second terminal (23) is propped against the third elastic piece part (1333);

the conductive plug connector (131) comprises a first conductor (1311) and a second conductor (1312), wherein the first conductor (1311) is provided with a mounting groove, and the second conductor (1312) comprises a cylindrical part provided with the conductive slot (132) and a connecting part detachably connected with the first conductor (1311); the outer wall of the cylindrical part is abutted with the mounting groove; the conductive spring piece (133) is fixed to the cylindrical portion, and the first spring piece portion (1331) abuts against the outer wall of the second conductive body (1312).

2. The high current plug electrical connector according to claim 1, wherein the outer wall of the second electrical conductor (1312) is provided with a fixing groove (135), the first spring piece portion (1331) is embedded in the fixing groove (135), and the first spring piece portion (1331) and the conductive plug connector (131) are fixed by a conductive bonding layer (136).

3. The high current plug-in electrical connector according to claim 1, wherein the conductive plug-in element (131) is a copper plug-in element and the conductive spring piece (133) is a copper spring piece; the first terminal (13) comprises at least four conductive clips (133).

4. The high current through-flow plug-and-socket electrical connector according to claim 1, wherein the first terminal (13) comprises a plurality of spring plate groups, each spring plate group comprises a plurality of conductive spring plates (133) which are uniformly spaced along the axial direction of the conductive slot (132), and the conductive spring plates (133) in different spring plate groups are staggered along the axial direction of the conductive slot (132).

5. The high current plug-in connector according to claim 1, wherein the first body (11) is provided with a non-return portion (113);

the second body (21) comprises a plurality of elastic claws (212) which are arranged at intervals along the circumferential direction, and the end parts of the elastic claws (212) are clamping blocks (2122); when the second connector (20) is positioned at the locking position, the second connector (20) is in opposite insertion connection with the first connector (10), and the clamping block (2122) is clamped with the non-return part (113);

the electric connector further comprises a secondary sleeve (30), wherein the secondary sleeve (30) comprises a base sleeve (301) and a plurality of unlocking blocks (31) connected to the base sleeve (301); the unlocking blocks (31) are arranged at intervals along the circumferential direction; the base sleeve (301) is movably connected with the second body (21), and the base sleeve (301) can rotate relative to the second body (21) so as to enable the auxiliary sleeve (30) to rotate to an unlocking position where the unlocking block (31) is abutted against the clamping block (2122), or enable the auxiliary sleeve (30) to rotate to a protection position where the unlocking block (31) and the clamping block (2122) are staggered in the circumferential direction; when the auxiliary sleeve (30) is positioned at the unlocking position, the unlocking block (31) can move along the axial direction in a direction away from the first connector (10) so as to push the clamping block (2122) to move along the radial direction in a direction away from the non-return part (113), so that the clamping block (2122) is separated from the non-return part (113).

6. The high-current overcurrent plug-in connector according to claim 5, wherein an unlocking positioning groove (32) is formed in the auxiliary sleeve (30), and an unlocking positioning block (2111) is formed in the second body (21); or, an unlocking positioning block (2111) is arranged on the auxiliary sleeve (30), and an unlocking positioning groove (32) is arranged on the second body (21);

the unlocking positioning groove (32) comprises a first groove part (321) extending along the circumferential direction and a second groove part (322) extending along the axial direction; the first groove (321) is communicated with the second groove (322);

the unlocking positioning block (2111) is clamped with the unlocking positioning groove (32); when the auxiliary sleeve (30) rotates relative to the second body (21), the unlocking positioning block (2111) moves in the first groove part (321); the secondary sleeve (30) is in the unlocked position when the unlocking locating piece (2111) is axially aligned with the second groove portion (322).

7. The high current plug electrical connector according to claim 6, wherein the unlocking positioning groove (32) is provided in the auxiliary sleeve (30), and the unlocking positioning block (2111) is provided in the second body (21) and protrudes outwards relative to the second body (21).

8. The high-current over-current plug-in connector according to claim 7, wherein a plurality of unlocking positioning grooves (32) are formed in the auxiliary sleeve (30) at intervals along the circumferential direction.