CN113036532A

CN113036532A - Quick plug connection structure

Info

Publication number: CN113036532A
Application number: CN202110248319.6A
Authority: CN
Inventors: 林昱奂; 罗家健; 李学超; 李世波
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: CN113036532B

Abstract

The invention discloses a quick plug connection structure, which comprises: a first connector including a cylindrical first body provided with a backstop portion; the second connector comprises a cylindrical second body, 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; the auxiliary sleeve comprises a base sleeve and a plurality of unlocking blocks, and the unlocking blocks are arranged at intervals along the circumferential direction; the base sleeve can rotate relative to the second body around the axial direction of the second body, so that the auxiliary sleeve rotates to the unlocking position where the unlocking block is abutted to the clamping block, or the auxiliary sleeve rotates to the protection position where the unlocking block and the clamping block are staggered in the circumferential direction. According to the quick plug-in connection structure, the two connectors are connected and installed through opposite insertion, and the backstops on the two connectors are in linkage fit to realize stable insertion; the auxiliary sleeve of the quick plug connection structure can selectively rotate to an unlocking position aligned with the clamping block and a protection position staggered with the clamping block, so that mistaken unlocking can be avoided.

Description

Quick plug connection structure

Technical Field

The invention relates to the technical field of cable connectors, in particular to a quick plug-in connection structure.

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 and extension of the length of the cable. Some existing cable connectors are installed in a plug-in mode, but are easily affected by external environments when used, and are not high in reliability due to the fact that the male connectors and the female connectors are accidentally separated.

Disclosure of Invention

One object of an embodiment of the present invention is to: the quick plug-in connection structure is simple and convenient in plugging process and stable and reliable in plugging.

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

a quick-connect-disconnect coupling structure comprising:

a first connector including a cylindrical first body; the first body is provided with a non-return part;

a second connector including a cylindrical second body; 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, the unlocking positioning block is a T-shaped positioning block, the unlocking positioning groove is a through hole, and the T-shaped positioning block penetrates through the through hole.

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

Preferably, a plurality of guide grooves are formed in the outer wall of the first body at intervals along the circumferential direction, and the guide grooves extend along the axial direction of the first body; a groove opening communicated with the guide groove is formed in the front end of the first body;

when the second body is connected with the first body in an opposite insertion mode, the elastic claw is inserted into the guide groove from the groove opening and moves along the extending direction of the guide groove.

Preferably, the non-return portion is a non-return groove, and a plurality of non-return grooves are arranged at intervals in the circumferential direction of the first body; the non-return grooves correspond to the guide grooves one by one, and convex parts are arranged between the non-return grooves and the guide grooves; the end face of the convex part close to one end of the guide groove is a guide end face, and the end face close to one end of the non-return groove is an anti-drop end face; in the axial direction of the second body, two opposite surfaces of the backstop part are a first surface and a second surface;

when the second body is in butt-inserting connection with the first body, the guide end surface abuts against the first surface to provide a radial expanded counter force for the fixture block; when the second connector is located at the locking position, the second surface is abutted to the anti-falling end face.

Preferably, the first surface is an inclined surface, and the guide end surface is an inclined surface; the second surface is a plane, and the anti-falling end face is a plane.

Preferably, the second body comprises a first cylindrical part and a second cylindrical part which are connected with each other, and the second cylindrical part comprises a plurality of elastic claws; the diameter of the first cylinder part is the same as that of the first body, and the diameter of the second cylinder part is larger than that of the first body;

when the second connector is located at the locking position, the end part of the first cylinder part is abutted against the end part of the first body; the second cylinder part is sleeved outside the first body; a seal ring is disposed between the first cylinder and the first body.

Preferably, the first connector further comprises a first rubber core detachably fixed inside the first body, and a first terminal fixed inside the first rubber core;

the second connector also comprises a second rubber core detachably fixed in the second body and a second terminal fixed in the second rubber core;

when the second connector is located at the locking position, the first terminal is electrically contacted with the second terminal.

The invention has the beneficial effects that: according to the quick plug-in connection structure, the first connector and the second connector are connected and installed through opposite insertion, and the backstops on the two connectors are in linkage fit to realize stable insertion; and this quick plug connection structure has still set up the vice cover that can rotate relative to the second connector, and the unblock piece of vice cover can selectively rotate to the unblock position that aligns with the fixture block to and the staggered protection position of fixture block, and when vice cover was in the protection position, unable unblock to the condition of avoiding the mistake unblock appears, guarantees the reliable connection between first connector and the second connector.

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 connector of a quick-connect/disconnect structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second connector of the quick-connect/disconnect structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a sub-sleeve of the quick plug connection structure according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the quick plug connection structure according to the embodiment of the present invention (in the diagram, the second connector is located at a locking position);

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is an enlarged view of portion B of FIG. 4;

FIG. 7 is a schematic structural diagram of the quick plug connection structure according to the embodiment of the present invention (the auxiliary sleeve is located at the unlock position)

FIG. 8 is an enlarged view of the portion C of FIG. 7;

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

FIG. 10 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. 11 is a second view of the second mating state of the auxiliary sheath and the second connector (the auxiliary sheath is in the protection position)

FIG. 12 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. 13 is a schematic view of a second state of the unlocking positioning block and the unlocking positioning slot according to the embodiment of the present invention;

FIG. 14 is a third schematic view illustrating a matching state of an unlock positioning block and an unlock positioning slot in the 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 face; 1122. an anti-drop end face; 113. a backstop portion; 12. a first rubber core; 13. a first terminal; 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 specified or limited, the second feature "on" or "under" the second feature may comprise the second and second features being in direct contact, or may comprise the second and second features being in contact, not directly, but via another feature in between. Also, a second feature "on," "above," and "above" a second feature includes the second feature being directly above and obliquely above the second feature, or simply indicating that the second feature is at a higher level than the second feature. A second feature being "under," "below," and "beneath" the second feature includes the second feature being directly under and obliquely below the second feature, or simply means that the second feature is at a lesser level than the second feature.

A quick plug-in connection structure has simple and convenient plug-in process and stable and reliable plug-in; 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.

As shown in fig. 1 to 14, in an embodiment of the quick plug connection structure of the present invention, the quick plug connection structure includes:

a first connector 10 including a cylindrical first body 11; the first body 11 is provided with a backstop part 113;

a second connector 20 including a cylindrical second body 21; 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 to the first connector 10 in an opposite insertion manner, the block 2122 is connected to the stopping portion 113 in a clamping manner, and the stopping portion 113 limits the degree of movement automation of the second body 21 in the direction away from the first body 11;

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 around the central axis of the second body 21 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 protecting 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 connecting structure 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, a first cable is electrically connected with the first electric connecting piece, a 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 plug-in process of the quick plug-in connection structure 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 quick plug connection structure of this embodiment can be dismantled when needing, convenient maintenance and used repeatedly, and first connector 10 and second connector 20 can be through following mode unblock:

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.

The quick plug connection structure of this embodiment needs to lock the protection operation after accomplishing the grafting, and 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 quick plug-in connection structure of the embodiment can be installed through plug-in, the installation process is simple, convenient and quick, and the disassembly and 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 connection structure is unlocked, and 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 connection structure, 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. 12), or when the unlock positioning block 2111 is located in the second slot portion 322 (as shown in fig. 13), 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. 10); 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. 11). In fig. 10, the secondary sheath 30 is in the unlocked position and in fig. 11, 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. 4-8, 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 realize the unlocking function of 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 "second" and "second" are used merely for descriptive purposes and are not intended to have a 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 quick plug connection structure which characterized in that includes:

a first connector (10) including a cylindrical first body (11); the first body (11) is provided with a non-return part (113);

a second connector (20) including a cylindrical second body (21); 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);

a secondary sleeve (30) comprising a base sleeve (301), and a number 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).

2. The quick plug connection structure according to claim 1, wherein an unlocking positioning slot (32) is provided on the auxiliary sleeve (30), and an unlocking positioning block (2111) is provided on 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 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).

3. The quick connect-disconnect coupling of claim 2, characterized in that, the unlock positioning slot (32) is provided in the auxiliary sleeve (30), and the unlock positioning block (2111) is provided in the second body (21) and protrudes outward relative to the second body (21).

4. The quick-connect/disconnect coupling of claim 3, wherein the unlock locating piece (2111) is a T-shaped locating piece, the unlock locating slot (32) is a through-hole, and the T-shaped locating piece passes through the through-hole.

5. The quick-connect-disconnect coupling according to claim 4, characterized in that a plurality of unlocking positioning slots (32) are provided on the auxiliary sleeve (30) at intervals in the circumferential direction.

6. The quick plug connection structure according to any one of claims 1 to 5, wherein the outer wall of the first body (11) is provided with a plurality of guide grooves (111) at intervals along the circumferential direction, and the guide grooves (111) extend along the axial direction of the first body (11); a groove opening communicated with the guide groove (111) is arranged at the front end of the first body (11);

when the second body (21) is connected with the first body (11) in a mutual insertion mode, the elastic claw (212) is inserted into the guide groove (111) from the groove opening and moves along the extending direction of the guide groove (111).

7. The quick plug connection structure according to claim 6, wherein the backstop portion (113) is a non-return 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); the end surface of one end of the convex part (112) close to the guide groove (111) is a guide end surface (1121), and the end surface close to one end of the non-return groove is a anti-drop 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);

when the second body (21) is connected with the first body (11) in a butt-inserting manner, the guide end surface (1121) is abutted against the first surface (21221) so as to provide a reaction force for the fixture block (2122) to expand in the radial direction; the second surface (21222) abuts the anti-coming-off end surface (1122) when the second connector (20) is in the locked position.

8. The quick-connect/disconnect coupling of claim 7, wherein the first surface (21221) is beveled and the guide end surface (1121) is beveled; the second surface (21222) is a plane, and the anti-falling end surface (1122) is a plane.

9. The quick-connect/disconnect coupling according to any one of claims 1-5, wherein the second body (21) comprises a first cylindrical portion (211) and a second cylindrical portion connected to each other, the second cylindrical portion comprising a plurality of said resilient fingers (212); the diameter of the first cylinder part (211) is the same as that of the first body (11), and the diameter of the second cylinder part 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 cylinder (211) abuts against the end of the first body (11); the second cylinder part is sleeved outside the first body (11); a seal ring (40) is provided between the first cylinder (211) and the first body (11).

10. The quick-connect and disconnect coupling structure according to any one of claims 1 to 5, wherein the first connector (10) further includes a first core (12) detachably secured to an interior of the first body (11), and a first terminal (13) secured to an interior of the first core (12);

the second connector (20) further comprises a second rubber core (22) detachably fixed in the second body (21), and a second terminal (23) fixed in the second rubber core (22);

when the second connector (20) is located at the locking position, the first terminal (13) is in electrical contact with the second terminal (23).