CN113036494A

CN113036494A - High-current overcurrent plug-pull electric connector

Info

Publication number: CN113036494A
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: 2021-06-25
Anticipated expiration: 2041-03-07
Also published as: CN113036494B

Abstract

The invention discloses a high-current overcurrent plug-pull electric connector, which comprises: a first connector including a cylindrical first body and a first terminal fixed inside 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 axial direction of the conductive slot; a second connector including a cylindrical second body and a second terminal fixed inside 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 is abutted to the conductive elastic sheet. This plug electric connector overflows with great current, at the in-process that first body and second body were to the plug connection, the second terminal can strut a plurality of electrically conductive shell fragments in proper order, has both effectively increased the electrical contact, has increased area of contact again, can reduce contact resistance, improves current carrying capacity, and application scope is wide, connects the reliability height.

Description

High-current overcurrent plug-pull electric connector

Technical Field

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

Background

On the power transmission line, two sections of cables need to be electrically connected by a cable connector, and the cable connector can be used for connection between various transmission devices, connection between various communication devices, cable length extension and the like.

At present, the plug-in electric connector on the market adopts an opposite-plug 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 for opposite-plug connection.

Disclosure of Invention

The embodiment of the invention aims to: the high-current overcurrent plug-pull electric connector is wide in application range and high in connection reliability, and the current bearing capacity of the high-current overcurrent plug-pull electric connector is provided.

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

a high current overcurrent plug electrical connector, comprising:

a first connector including a cylindrical first body and a first terminal fixed inside 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 axial 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 is abutted to the conductive elastic sheet.

Preferably, the conductive elastic sheet comprises a first elastic sheet part, a second elastic sheet part and a third elastic sheet part which are connected in sequence; 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 is positioned inside the conductive slot, the second elastic piece is arranged in the mounting hole in a penetrating way, and the first elastic piece is abutted against the outer wall of the conductive plug connector; when the second body is connected with the first body in an inserting mode, the outer wall of the second terminal is abutted to the third elastic piece portion.

Preferably, the outer wall of the conductive connector clip is provided with a fixing groove, the first elastic piece is embedded in the fixing groove, and the first elastic piece is fixed with the conductive connector clip through a conductive bonding layer.

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

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

Preferably, the first terminal comprises a plurality of groups of elastic sheet groups, each group of elastic sheet group comprises a plurality of conductive elastic sheets which are uniformly arranged along the axial direction of the conductive slot at intervals, and the conductive elastic sheets in different elastic sheet groups are staggered in the axial direction of the conductive slot.

Preferably, the first body is provided with a backstop part;

the second body comprises a plurality of elastic claws arranged at intervals along the circumferential direction, and the end parts of the elastic claws are clamping blocks; when the second connector is located at the locking position, the second connector is in plug 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 to 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 the base sleeve can rotate relative to the second body so as to enable the auxiliary sleeve to rotate to an unlocking position where the unlocking block is abutted to the clamping block, or to rotate to a protection position where the unlocking block is staggered with the clamping block in the circumferential direction; when the auxiliary sleeve is located at the unlocking position, the unlocking block can move in the direction far away from the first connector along the axial direction so as to push the clamping block to move in the direction far away from the non-return part along the radial direction, and therefore the clamping block is separated from the non-return part.

Preferably, the auxiliary sleeve is provided with an unlocking positioning groove, and the second body is provided with an unlocking positioning block; or the auxiliary sleeve is provided with an unlocking positioning block, and the second body is provided with an unlocking positioning groove;

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 slot portion is communicated with the second slot portion;

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 located at the unlocking position.

Preferably, the unlocking positioning groove is formed in 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 invention has the beneficial effects that: this plug electric connector overflows with great current, at the in-process that first body and second body were to the plug connection, the second terminal can strut a plurality of electrically conductive shell fragments in proper order, has both effectively increased the electrical contact, has increased area of contact again, can reduce contact resistance, improves current carrying capacity, and application scope is wide, connects the reliability height.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

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

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

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

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

fig. 5 is a schematic structural diagram 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 present invention;

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

FIG. 8 is an enlarged view of portion A of FIG. 7;

FIG. 9 is an enlarged view of portion B of FIG. 7;

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

FIG. 11 is an enlarged view of the portion C of FIG. 10;

FIG. 12 is an enlarged view of section D of FIG. 10;

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

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

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

fig. 16 is a schematic view illustrating a second state of the unlock positioning block and the unlock positioning slot according to the embodiment of the present invention;

fig. 17 is a schematic view of a third state of the unlocking positioning block being engaged with the unlocking positioning slot according to the embodiment of the present invention;

fig. 18 is a schematic structural view of a sub-sleeve of the electrical connector according to the embodiment of the invention;

in the figure: 10. a first connector; 11. a first body; 111. a guide groove; 112. a convex portion; 1121. a guide end face; 1122. an anti-drop end face; 113. a backstop portion; 12. a first rubber core; 13. a first terminal; 131. a conductive plug connector; 1311. a first electrical conductor; 1312. a second electrical conductor; 132. a conductive slot; 133. a conductive spring plate; 1331. a first tab portion; 1332. a second tab portion; 1333. a third tab portion; 134. mounting holes; 135. fixing grooves; 136. a conductive bonding layer; 20. a second connector; 21. a second body; 211. a first tube section; 2111. unlocking the positioning block; 212. an elastic claw; 2121. a pawl body; 2122. a clamping block; 21221. a first surface; 21222. a second surface; 22. a second rubber core; 23. a second terminal; 30. a secondary 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. positioning the wall of the groove; 322. a second groove portion; 40. and (4) a sealing ring.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, 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 a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" are to be understood broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention provides a high-current overcurrent plug-pull electric connector which is high in current carrying capacity, wide in application range and high in 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 inside 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 spring pieces 133 arranged at intervals along the axial direction of the conductive slot 132; the conductive elastic sheet 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 by means of mutual insertion;

when the second body 21 is inserted into the first body 11, that is, when the second body is inserted into the conductive slot 132, the second terminal 23 is inserted into the conductive slot, and the outer wall of the second terminal 23 abuts against the conductive elastic sheet 133, so as to achieve electrical contact.

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

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

Specifically, when the first body 11 and the second body 21 are not inserted, an elastic piece space is formed between the conductive contact portion of the conductive elastic piece 133 and the groove 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, the first body 11 and the second body 21 are oppositely inserted and connected until the insertion is in place, and 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 sheets 133 are arranged at intervals in the axial direction of the conductive slot 132, so that the second terminal 23 can sequentially open the plurality of conductive elastic sheets 133 in the process of plug-in connection of the first body 11 and the second body 21, electric contact points are effectively increased, the contact area is increased, the contact resistance can be greatly reduced, the current bearing capacity is improved, and the electric connector is suitable for passing large current; in addition, when the electrical connector is in plug connection, the plurality of conductive elastic sheets 133 simultaneously provide an inward elastic force to the second terminal 23, so that reliable contact between the conductive elastic sheets 133 and the second terminal 23 can be maintained, and connection reliability is ensured.

Further, in this 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 to 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, in order to facilitate production and manufacture, the conductive elastic sheet 133 includes a first elastic sheet portion 1331, a second elastic sheet portion 1332 and a third elastic sheet portion 1333 which are connected in sequence; the first elastic piece part 1331 and the third elastic piece part 1333 are both bent relative to the second elastic piece part 1332; the third spring plate portion 1333 is a conductive contact portion;

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 portion 1333 is positioned inside the conductive slot 132, the second elastic piece portion 1332 is arranged in the mounting hole 134 in a penetrating manner, and the first elastic piece portion 1331 is abutted to the outer wall of the conductive plug connector 131; when the second body 21 is connected to the first body 11 in an inserting manner, the outer wall of the second terminal 23 abuts against and is electrically connected to the third elastic piece portion 1333.

With such an arrangement, when the first terminal 13 is manufactured, the conductive plug connector 131 with the mounting hole 134 and the conductive slot 132 is formed by processing in an integrated molding manner or a punching manner, and the like, then one end of the conductive elastic sheet 133 passes through the first mounting hole 134, and then the conductive elastic sheets 133 at the two ends of the mounting hole 134 are processed into the first elastic sheet portion 1331 and the third elastic sheet portion 1333 by processes such as pushing, bending and the like, so that the conductive elastic sheet 133 can be mounted on the conductive plug connector 131. The structure is simple, and the processing and the manufacturing are convenient.

In some embodiments, the conductive connector 131 includes a first half connector and a second half connector, which are connected to each other, so that the conductive spring 133 can be easily fixed and electrically connected to the conductive connector 131 during manufacturing.

Further, in order to facilitate production and manufacturing, a fixing groove 135 is formed in an outer wall of the conductive plug connector 131, the first elastic piece portion 1331 is embedded in the fixing groove 135, and the first elastic piece and the conductive plug connector 131 are fixed through a conductive bonding layer 136.

In this embodiment, the conductive bonding layer 136 is formed by solidifying silver-containing solder, and the silver-containing solder can not only electrically connect the conductive clip 133 with the conductive plug 131, but also fix the conductive clip 133 to the conductive plug 131. Of course, in other embodiments, the conductive bonding layer 136 may be formed by curing other conductive bonding materials.

The electric connector can be repeatedly used, and an operator can unlock the locking state between the first locking part and the second locking part to enable the first body 11 to be separated from the second body 21, so that the electric connector can be repeatedly used or detached for maintenance. Therefore, the electric connector is too long in service time, or after the electric connector is subjected to multiple plugging operations, the situation that the conductive elastic sheet 133 is elastically ineffective easily occurs, the situation that the conductive elastic sheet 133 cannot be tightly abutted against the second terminal 23 easily occurs, and the reliability of electric connection cannot be guaranteed at the moment.

Further, in order to ensure the reliability of the electrical connection while ensuring the current carrying capacity, the conductive plug 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 slot 132, and a connecting portion (not shown) detachably connected to the first conductive body 1311; the outer wall of the cylindrical part is abutted against the mounting groove; the conductive elastic piece 133 is fixed to the cylindrical portion. The second conductive body 1312 serves as a mounting base for disposing the plurality of conductive clips 133 and providing the conductive slots 132. Thus, the second conductive body 1312 and the conductive elastic sheet 133 fixed on the second conductive body 1312 form a conductive integrated piece.

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

When the electric connector is used for too long time or after the electric connector is subjected to multiple plugging operations, the conductive integrated piece is detached and replaced, so that the reliability of the 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 a smaller radial thickness may be adopted, so that the volume of the detached conductor is smaller and no waste is caused when the conductive integrated member is replaced each time, and by adopting the detachable connection manner of the second conductor 1312 and the first conductor 1311, the volume of the second conductor 1312 may be compensated by the volume of the first conductor 1311, so as to ensure the effective conductive volume of the conductive plug 131, thereby improving the current carrying capacity of the electrical connector.

In this embodiment, in order to improve the current carrying capability and the heat dissipation capability, the conductive connector 131 is a copper connector, the conductive elastic piece 133 is a copper elastic piece, and the second terminal 23 is a copper terminal, so that the resistance of copper is small and the heat dissipation performance is good. Of course, in other embodiments, other conductive materials can be used for the conductive plug 131, the conductive elastic piece 133 and the second terminal 23.

Further, in order to improve the current carrying capacity, the first terminal 13 includes at least four conductive elastic pieces 133.

Further, in order to improve the current carrying capacity and reduce the insertion resistance, the first terminal 13 includes a plurality of groups of elastic sheet groups, each group of elastic sheet group includes a plurality of conductive elastic sheets 133 uniformly arranged along the axial direction of the conductive slot 132 at intervals, and the conductive elastic sheets 133 in different elastic sheet groups are staggered in the axial direction of the conductive slot 132. The conductive elastic sheet 133 is staggered in the axial direction of the conductive slot 132, the tail end of the third elastic sheet part 1333 is staggered, and the head end of the third elastic sheet part 1333 is staggered.

In another 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 simple and convenient plugging process is provided, and meanwhile, plugging is stable and reliable; the two connectors can be separated by unlocking the auxiliary sleeve 30, and meanwhile, the condition of mistaken unlocking can be avoided, and reliable connection between the two connectors is ensured.

In addition, when the parts in the first terminal 13 need to be replaced, the electric connector of the present invention is unlocked by the auxiliary sleeve 30, so that the first connector 10 and the second connector 20 can be separated from each other.

Specifically, a backstop portion 113 is arranged on the first body 11;

the second body 21 comprises a plurality of elastic claws 212 arranged at intervals along the circumferential direction, and the end parts of the elastic claws 212 are fixture blocks 2122; when the second connector 20 is located at the locking position, the second connector 20 is connected with the first connector 10 in an opposite insertion manner, and the block 2122 is clamped with the backstop portion 113;

the electric connector further comprises an auxiliary sleeve 30, wherein the auxiliary 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 to 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 latch block 2122, or the auxiliary sleeve 30 rotates to a protection position where the unlocking block 31 and the latch block 2122 are staggered in the circumferential direction; when the sub-sleeve 30 is located at the unlocking position, the unlocking block 31 can move in a direction away from the first connector 10 along the axial direction to push the latch block 2122 to move in a direction away from the backstop 113 along the radial direction, so that the latch block 2122 is disengaged from the backstop 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 sleeve 301, the other end is connected to the hook portion 312, and the hook portion 312 protrudes relative to the plate portion 311 in the radial direction; the plate portion 311 is an elastic plate portion 311, and the plate portion 311 provides the hook portion 312 with a radial elastic force for keeping the hook portion 312 in snap-fit engagement with the backstop portion 113; when the unlocking piece 31 moves in the direction away from the first connector 10 in the axial direction, the hook 312 is pushed against the elastic force provided by the plate 311 in the radial direction to disengage the latch 2122 from the snap-fit engagement with the backstop 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; when so configured, the unlocking block 31 is moved in the axial direction away from the first body 11 to push the locking block 2122 to move outward in the radial direction to disengage from the backstop 113.

In other embodiments of the present invention, the second body 21 can be further sleeved inside the first body 11, and the auxiliary sleeve 30 is sleeved inside the second body 21. When so configured, the unlocking block 31 is moved in the axial direction away from the first body 11 to push the clamping block 2122 to move inward in the radial direction to disengage from the backstop 113. With this arrangement, an unexpected external force can be prevented from acting on the latch 2122, and a reliable connection between the first body 11 and the second body 21 can be ensured.

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

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

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

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

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

The plugging process of the electrical 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 oppositely, 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 block 2122 on the second body 21 and the stopping portion 113 of the first body 11 approach each other until the block 2122 is clamped into the stopping portion 113, at this time, the surface of the block 2122 facing the first rear end abuts against the surface of the stopping portion 113 facing the second rear end, at this time, the elastic claw 212 provides the block 2122 with radial and axial clamping forces that keep clamped with the stopping portion 113, the stopping portion 113 facing the second rear end prevents the block 2122 from moving away from the first body 11, the stopping portion 113 is in stopping fit with the block 2122, the second body 21 is prevented from moving in a direction axially away from the first body 11, the second connector 20 is ensured to be in the current locking position, and the electrical connection between the cable and the cable is ensured.

The electrical connector of the present embodiment can be disassembled when necessary, and is convenient for maintenance and reuse, and the first connector 10 and the second connector 20 can be unlocked as follows:

the auxiliary sleeve 30 is rotated to enable the unlocking blocks 31 to be aligned 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, the second connector 20 is pulled out of the first connector 10 by applying an external force, and the two connectors are released from each other.

After the electric connector of this embodiment is plugged, the locking protection operation needs to be performed, and the locking protection operation process is as follows:

the auxiliary sleeve 30 is rotated to stagger the unlocking blocks 31 and the clamping blocks 2122 one by one, so that the unlocking blocks 31 are all positioned in the interval between the claws. In this way, when friction or other push-pull force is accidentally applied to the sub-sleeve 30, the sub-sleeve 30 is prevented from being accidentally moved in the axial direction, so that the unlocking block 31 of the sub-sleeve 30 is prevented from accidentally pushing the locking block 2122 of the elastic claw 212 to leave the stopping portion 113, thereby ensuring reliable connection between the second connector 20 and the first connector 10.

The electric connector of the embodiment can be installed by opposite insertion, the installation process is simple, convenient and quick, and the disassembly and the maintenance are convenient; meanwhile, the auxiliary sleeve 30 can be prevented from moving axially in an unexpected situation due to misoperation or external environmental influence, the electric connector is unlocked, and the reliable connection between the first connector 10 and the second connector 20 can be ensured.

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

Further, in order to realize that the auxiliary sleeve 30 can rotate relative to the second body 21 and can move axially relative to the second body 21, the movable connection between the auxiliary sleeve 30 and the second body 21 is realized through the cooperation of the unlocking positioning groove 32 and the unlocking position 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, an unlocking positioning block 2111 is arranged on the auxiliary sleeve 30, and an unlocking positioning slot 32 is arranged on the second body 21;

the unlocking positioning groove 32 includes a first groove portion 321 extending in the circumferential direction, and a second groove portion 322 extending in 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 unlock positioning block 2111 is axially aligned with the second groove portion 322, the sub-sleeve 30 is located at the unlock position; when the unlocking positioning block 2111 moves from the first groove 321 to the second groove 322, the unlocking block 31 pushes the latch 2122 to move outward in the radial direction.

In this embodiment, for the convenience of assembly and the waterproof sealing performance of the electrical connector, the unlocking positioning slot 32 is disposed in the auxiliary sleeve 30, the unlocking positioning block 2111 is disposed in the second body 21, and the unlocking positioning block 2111 protrudes outward relative to the second body 21; the unlocking positioning block 2111 is a T-shaped positioning block, the unlocking positioning slot 32 is a through hole, and the T-shaped positioning block penetrates through the through hole. Wherein, unblock constant head tank 32 is the through-hole, promptly, unblock constant head tank 32 is the logical groove of both ends intercommunication. So set up, conveniently penetrate unblock locating piece 2111 unblock constant head tank 32 when making the equipment, simultaneously, locate vice cover 30 rather than second body 21 with unblock constant head tank 32 to avoid fluting 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 descends again.

Further, the second groove 322 is located near the front end of the second body 21 with respect to the first groove 321. When the unlock positioning block 2111 is located at the connection of the first slot portion 321 and the second slot portion 322 (as shown in fig. 15), or when the unlock positioning block 2111 is located in the second slot portion 322 (as shown in fig. 16), the unlock blocks 31 of the sub-sleeve 30 are adjusted to be aligned with the latch blocks 2122 of the second body 21 one by one (as shown in fig. 13); when the sub-sleeve 30 is rotatable around the axis of the second body 21 relative to the second body 21, so that the position of the unlocking positioning block 2111 is adjusted from fig. 12 to the position in fig. 14, the unlocking block 31 of the sub-sleeve 30 is adjusted to a position circumferentially staggered from the locking block 2122 of the second body 21 (as shown in fig. 14). In fig. 13, the secondary sheath 30 is in the unlocked position and in fig. 14, the secondary sheath 30 is in the protected position.

When the auxiliary sleeve 30 is located at the protection position, the axial positioning groove wall 3211 of the first groove portion 321 prevents the auxiliary sleeve 30 from moving axially, and at this time, the auxiliary sleeve 30 cannot achieve the unlocking function.

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

As shown in fig. 7-11, when the auxiliary sleeve 30 is located at the unlocking position, the operator provides an external force to move the auxiliary sleeve 30 away from the first body 11, so as to unlock the auxiliary sleeve 30. During unlocking, the unlock positioning block 2111 is actively or passively moved within the second slot portion 322.

Further, in order to make the adjustment effect more stable, a plurality of unlocking positioning slots 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 backstop portion 113 is a backstop groove, and a plurality of backstop grooves are arranged at intervals in the circumferential direction of the first body 11; the non-return grooves correspond to the guide grooves 111 one by one, and convex parts 112 are arranged between the non-return grooves and the guide grooves 111; an end surface of the protruding portion 112 close to one end of the guide groove 111 is a guide end surface 1121, and an end surface close to one end of the non-return groove is a non-return end surface 1122; in the axial direction of the second body 21, the two opposite faces of the backstop 113 are a first surface 21221 and a second surface 21222; the anti-drop end face 1122 is a top wall of the non-return groove;

when the second body 21 is inserted into the first body 11, the guiding end surface 1121 abuts against the first surface 21221 to provide a radial expanding reaction force to the locking block 2122; when the second connector 20 is located at the locking position, the second surface 21222 abuts against the anti-falling end surface 1122.

Further, the first surface 21221 is an inclined surface, and the guiding end surface 1121 is an inclined surface, so that when the second body 21 is inserted into the first body 11, the guiding inclined surface makes the elastic claw 212 more easily open, so that the block 2122 is clamped into the non-return groove; the second surface 21222 is a flat surface, and the anti-falling end surface 1122 is a flat surface, so that the second flat surface and the anti-falling end surface can reliably abut against each other to ensure that the second connector 20 is stably maintained in the locking position.

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

when the second connector 20 is located at the locking position, the end of the first cylindrical portion 211 abuts against the 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 cylinder part can be sleeved outside the first body 11, butt joint locking of the two connectors can be realized, sealing connection between the second body 21 and the first body 11 can be realized, air tightness and water resistance are improved, and the safety and the reliability are improved.

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

the second connector 20 further includes a second core 22 detachably fixed inside the second body 21, and a second terminal 23 fixed inside the second core 22;

when the second connector 20 is located at the locking position, the first terminals 13 are in electrical contact with the second terminals 23.

When the cable is used specifically, the wire core of the first cable penetrates the first rubber core 12 to be linked with the first terminal 13, the wire core of the second cable penetrates the second rubber core 22 to be electrically connected with the second terminal 23, and when the second connector 20 is inserted in place with the first connector 10, the first cable is electrically connected with the second cable.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings, and are used for convenience of description and simplicity of operation only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a big current overflows plug electric connector which characterized in that includes:

a first connector (10) including a cylindrical first body (11), and a first terminal (13) fixed inside 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) 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 connected with the first body (11) in an inserting mode, the second terminal (23) is inserted into the conductive slot (132), and the outer wall of the second terminal (23) is abutted to the conductive elastic sheet (133).

2. A high-current overcurrent plug electrical connector according to claim 1, wherein the conductive spring piece (133) comprises a first spring piece portion (1331), a second spring piece portion (1332) and a third spring piece portion (1333) which are connected in sequence; the first tab portion (1331) and the third tab portion (1333) are both folded with respect to the second tab portion (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 located inside the conductive slot (132), the second elastic piece part (1332) is arranged in the mounting hole (134) in a penetrating mode, and the first elastic piece part (1331) is abutted to the outer wall of the conductive plug connector (131); when the second body (21) is connected with the first body (11) in an inserting mode, the outer wall of the second terminal (23) is abutted against the third elastic piece portion (1333).

3. The high-current overcurrent plug-pull electric connector according to claim 2, wherein a fixing groove (135) is formed in an outer wall of the conductive plug connector (131), the first spring piece portion (1331) is embedded in the fixing groove (135), and the first spring piece portion and the conductive plug connector (131) are fixed through a conductive bonding layer (136).

4. A high current overcurrent plug electrical connector according to claim 1, wherein the conductive plug (131) comprises a first conductor (1311) and a second conductor (1312), the first conductor (1311) is provided with a mounting groove, 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 against the mounting groove; the conductive elastic sheet (133) is fixed to the cylindrical portion.

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

6. The high-current overcurrent plug electrical connector according to claim 1, wherein the first terminal (13) includes a plurality of groups of spring pieces, each group of spring pieces includes a plurality of conductive spring pieces (133) uniformly spaced along an axial direction of the conductive slot (132), and the conductive spring pieces (133) in different groups of spring pieces are staggered in the axial direction of the conductive slot (132).

7. A high-current overcurrent plug electrical connector according to claim 1, wherein the first body (11) is provided with a backstop (113);

the second body (21) comprises a plurality of elastic claws (212) 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 located at the locking position, the second connector (20) is connected with the first connector (10) in a butt-inserting mode, and the clamping block (2122) is clamped with the non-return portion (113);

the electric connector also 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) abuts 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 located at the unlocking position, the unlocking block (31) can move in the direction away from the first connector (10) along the axial direction to push the clamping block (2122) to move in the direction away from the non-return part (113) along the radial direction, so that the clamping block (2122) is separated from the non-return part (113).

8. The large-current overcurrent plug electrical connector according to claim 7, wherein the auxiliary sleeve (30) is provided with an unlocking positioning slot (32), and the second body (21) is provided with an unlocking positioning block (2111); 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 portion (321) communicates with the second groove portion (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 unlock positioning block (2111) is axially aligned with the second slot portion (322).

9. A large current overcurrent plug electrical connector according to claim 8, wherein the unlocking positioning slot (32) is disposed in the auxiliary sleeve (30), and the unlocking positioning block (2111) is disposed in the second body (21) and protrudes outward relative to the second body (21).

10. A large current overcurrent plug electrical connector according to claim 9, wherein the auxiliary sleeve (30) has a plurality of unlocking positioning slots (32) circumferentially spaced apart from each other.