CN111779906A

CN111779906A - Quick connector with elastic insertion and rigid locking structure

Info

Publication number: CN111779906A
Application number: CN202010662781.6A
Authority: CN
Inventors: 刘淼
Original assignee: Voss Automotive Part Jinan Co ltd
Current assignee: Voss Automotive Part Jinan Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-16

Abstract

The invention relates to the technical field of quick connectors and discloses a quick connector with an elastic insertion and rigid locking structure, which comprises a female connector body, wherein a circular through hole is formed in the middle of the female connector body, two groups of O-shaped sealing rings are sleeved at the lower end of the interior of the female connector body, a spacer sleeve is clamped at the middle position of each group of O-shaped sealing rings, a locking baffle is arranged at the outer circle of the female connector body, a check ring is sleeved at the outer circle of the female connector body, a sealing check ring is sleeved at the lower end of the inner circle of the female connector body, a flange is sleeved at the outer circle of the lower end of the sealing check ring, a male connector is sleeved inside the lower end of the flange, a male connector clamping groove is fixedly arranged at the lower end of the male connector, and a. According to the invention, the check ring is designed in a self-resetting inserting-piece mode, the elastic beam structure of the inserting-piece type check ring is in contact with and extruded with the outer wall of the sealing check ring to generate a return elastic force, so that one-time locking is realized, and the one-time locking is elastic locking, so that quick inserting and quick unlocking are realized.

Description

Quick connector with elastic insertion and rigid locking structure

Technical Field

The invention relates to the technical field of quick connectors, in particular to a quick connector with an elastic insertion and rigid locking structure.

Background

The liquid cooling system is used as a subsystem of the battery system, and the overall scheme design needs to be matched with the scheme design of the battery system and is completed synchronously with the scheme design of the battery system. The overall scheme of the liquid cooling system is used as an overview of liquid cooling parts of each liquid cooling subsystem, and all the liquid cooling subsystems and the liquid cooling parts need to be ensured to act cooperatively. After the overall solution is determined, the heat transfer path, liquid cooling loops, liquid cooling plates, cooling strategy and mechanical structure need to be determined.

Existing joint utilizes the elasticity locking to accomplish the final grafting with the male joint on the market at present, does not adopt secondary locking or adopts elasticity locking piece usually, and the elasticity locking utilizes material self to warp the state of guaranteeing the locking, and the locking structure only need apply sufficient power and produce sufficient deformation, can cause the locking function to become invalid, if then use rigidity locking structure to replace, can improve articulate reliability. The joint connection is ensured to avoid failure under the normal working state. To this end, a quick connector with a resilient plug-in and rigid locking structure is proposed.

Disclosure of Invention

The invention mainly solves the technical problems in the prior art and provides a quick connector with an elastic insertion and rigid locking structure.

In order to achieve the purpose, the invention adopts the following technical scheme that the quick connector with the elastic insertion and rigid locking structure comprises a female connector body, wherein a circular through hole is formed in the middle position of the female connector body, two groups of O-shaped sealing rings are sleeved at the lower end in the female connector body, a spacer sleeve is clamped at the middle position of the two groups of O-shaped sealing rings, a locking baffle is arranged at the outer circle of the female connector body, a check ring is sleeved at the outer circle of the female connector body, a sealing check ring is sleeved at the lower end of the inner circle of the female connector body, a flange is sleeved at the outer circle of the lower end of the sealing check ring, a male connector is sleeved inside the lower end of the flange, and a male connector clamping groove is formed in the outer.

The inner circle position of retaining ring is provided with the retaining ring slotted hole, the equal fixed mounting in both sides limit of retaining ring has the lug, the outside front end intermediate position fixed mounting of retaining ring has the kicking block, the upper end of kicking block is provided with secondary unblock baffle space, the outside rear end edge of retaining ring is provided with the chamfer, the up end rear side fixed mounting of retaining ring has the elastic beam, the inside rear side intermediate position fixed mounting of elastic beam has the deformation stopper, the outside front end intermediate position of elastic beam is provided with the contact plate, the inner circle front side position of retaining ring is provided with the pothook, fixed mounting has the unblock button on the outside rear end face of retaining.

The middle position of the excircle of the sealing retainer ring is fixedly provided with non-return inverted teeth, and four groups of deformation space cutting grooves are uniformly distributed on the lower end surface of the sealing retainer ring at equal intervals.

The female joint body comprises inverted teeth and a joint body locking section, the inverted teeth and the joint body locking section are fixedly connected together, the middle position of the inner ring of the joint body locking section is provided with an inserting type check ring limiting surface, the excircle of the joint body locking section is provided with an inserting type check ring lower channel, a check ring middle support rod is fixedly arranged inside the inserting type check ring lower channel, the upper end of the check ring middle support rod is provided with an inserting type check ring upper channel, the excircle of the inverted teeth is provided with a baffle slot, the reverse direction of the baffle slot is opposite to that of the inserting type check ring lower channel, the outer side edge of the baffle slot is fixedly provided with a self-locking baffle side guard plate, the excircle of the joint body locking section is provided with two groups of mold openings, the positions of the two groups of mold openings are the same vertical position as that of the baffle slot, the middle position of the two groups of mold openings is provided with, baffle front guard plates are arranged on two side edges of the baffle slot, and a fluid flow channel is arranged at the top end of the female joint body.

Preferably, the upper end of the locking baffle is fixedly provided with a press button, a rectangular groove is formed in the middle of the outer side of the locking baffle, a baffle unlocking button is arranged in the groove, and the left side and the right side of the baffle unlocking button are respectively provided with a right arm and a left arm.

Preferably, a self-locking unlocking cantilever is fixedly mounted at the lower end of the baffle unlocking button and is fixedly connected with the bottom surface of the locking baffle outer side groove.

Preferably, the bottom end of the outer side surface of the locking baffle is fixedly provided with a baffle, and the lower ends of the two side surfaces of the locking baffle are provided with guide inclined planes.

Preferably, the outer side surface of the self-locking unlocking cantilever is respectively and fixedly provided with a baffle non-return pawl and a baffle self-locking pawl, the baffle self-locking pawl is positioned at the upper end of the baffle non-return pawl, and the inner side surface of the self-locking unlocking cantilever is fixedly provided with a non-return pawl back plate.

Advantageous effects

The invention provides a quick connector with an elastic insertion and rigid locking structure. The method has the following beneficial effects:

(1) the quick connector with the elastic inserting and rigid locking structure adopts a female connector in an elastic inserting sheet type check ring structure form, is different from the connector form based on an SV270 male connector in the prior art, the self-resetting of the check ring is realized by generating elastic force through the extrusion deformation of the elastic structure of the check ring and the side wall of a sealing check ring, and in the inserting installation process of the male connector and the female connector body, the snap connection of the female connector body and the male connector is realized by clamping the clamping hook into the clamping groove of the male connector by utilizing the elastic force, and clear inserting sound signals and shape signals are provided; after the insertion is finished, the clamping state is continuously kept under the action of elastic force; in the dismantlement in-process, the operator overcomes the elastic force through pressing the unblock button, releases the pothook from the male joint draw-in groove, accomplishes the joint unblock, can separate female joint body and male joint this moment, arranges the position of lug in the most yielding thinnest department of retaining ring, and both usable deformation accomplishes the joint, can not produce destruction to the retaining ring structure again.

(2) This quick connector with elasticity is pegged graft and rigidity locking structure, retaining ring are for from the design of reset inserted sheet formula, utilize inserted sheet formula retaining ring elastic beam structure and sealing ring outer wall contact extrusion to produce and reply the elastic force, realize a locking, and a locking is the elasticity locking, realizes pegging graft fast and unblock fast.

(3) This quick connector with elasticity is pegged graft and rigidity locking structure, the design of plug-in sheet formula retaining ring passageway is binary channels from top to bottom on the joint body, will have the part of different functions and cut apart and improve the cooperation precision, avoids simultaneously because the too big plug-in sheet formula retaining ring that arouses of single passageway cross sectional dimension twists reverse or warp and then influence the cooperation precision and connect wholeness ability in the translation in-process appearance.

(4) According to the quick connector with the elastic insertion and rigid locking structure, the secondary locking baffle slot on the connector body is designed to be a straight-through type, so that the manufacturing process of the connector body is simplified, and the installation, disassembly and replacement operations of the secondary locking baffle are simplified.

(5) This quick connector with elasticity is pegged graft and rigidity locking structure has secondary locking baffle, through occupying the required deformation space of a locking unblock, rigidity locking promptly, locks a locking state, increases the safety and stability of device.

(6) This quick connector with elasticity is pegged graft and rigidity locking structure, the two pawl structural design of secondary locking baffle have auto-lock and anticreep, and lockable secondary locking state is deviate from the slot when preventing the unblock simultaneously.

(7) This quick connector with elasticity is pegged graft and rigidity locking structure adopts the mistake proofing design, guarantees to a locking, secondary locking again, this correct installation procedure of auto-lock of secondary locking again, guarantees the uniqueness of device, realizes that twice locking can be stable go on according to the order, and simplified operation just improves stability.

(8) This quick connector with elasticity is pegged graft and rigidity locking structure, centering flange's design has guaranteed to connect under the service environment that receives the side direction effect, can keep the stability of assembly and then guarantee the stability of work.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a detailed view of the retainer ring of the present invention;

FIG. 3 is a schematic view of the back of the retainer ring of the present invention;

FIG. 4 is a detailed schematic view of a sealing gasket of the present invention;

FIG. 5 is a detailed schematic view of the female fitting body of the present invention;

FIG. 6 is a schematic top view of the female fitting body of the present invention;

FIG. 7 is a schematic front view of the locking baffle of the present invention;

FIG. 8 is a rear schematic view of the locking baffle of the present invention;

FIG. 9 is a schematic sectional view of the female connector body and retainer ring of the present invention installed;

FIG. 10 is a schematic sectional view of the installation of the retainer ring and male fitting of the present invention;

fig. 11 is a cross-sectional overall installation schematic of the present invention.

Illustration of the drawings:

1 female joint body, 2O-shaped sealing ring, 3 spacer bushes, 4 locking baffle plates, 5 check rings, 6 sealing check rings, 7 flanges, 8 male joints, 9 male joint clamping grooves, 10 check ring slotted holes, 11 convex blocks, 12 top blocks, 13 secondary unlocking baffle plate spaces, 14 chamfers, 15 elastic beams, 16 deformation limiting blocks, 17 contact plates, 18 clamping hooks, 19 unlocking buttons, 20 non-return inverted teeth, 21 deformation space cutting grooves, 22 inverted teeth, 23 joint body locking sections, 24 inserted type check ring limiting surfaces, 25 inserted type check ring lower channels, 26 check ring middle support rods, 27 inserted type check ring upper channels, 28 self-locking baffle plate side protection plates, 29 mould openings, 30 baffle plate inserting groove windows, 31 baffle plate inserting grooves, 32 baffle plate front protection plates, 33 fluid flow passages, 34 press buttons, 35 baffle plate unlocking buttons, 36 right arms, 37 self-locking unlocking cantilevers, 38 baffle plates, 39 guide inclined surfaces, 40 non-return inverted teeth, 41 baffle plate self-locking inverted teeth, 41 baffle plate inverted teeth, 42 left arm, 43 no return pawl back plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example (b): a quick connector with elastic splicing and rigid locking structures is shown in figures 1-11 and comprises a female connector body 1, wherein a circular through hole is formed in the middle of the female connector body 1, two groups of O-shaped sealing rings 2 are sleeved on the lower end of the inside of the female connector body 1, a spacer 3 is clamped between the middle positions of the two groups of O-shaped sealing rings 2, a locking baffle 4 is arranged on the outer circle of the female connector body 1, a retainer ring 5 is sleeved on the outer circle of the female connector body 1, a sealing retainer ring 6 is sleeved on the lower end of the inner circle of the female connector body 1, a flange 7 is sleeved on the outer circle of the lower end of the sealing retainer ring 6, a male connector 8 is sleeved inside the lower end of the flange 7, and a male connector clamping groove 9 is formed in the outer circle of.

The inner circle position of retaining ring 5 is provided with retaining ring slotted hole 10, the equal fixed mounting in both sides limit of retaining ring 5 has lug 11, the outside front end intermediate position fixed mounting of retaining ring 5 has kicking block 12, the upper end of kicking block 12 is provided with secondary unblock baffle space 13, the outside rear end edge of retaining ring 5 is provided with chamfer 14, the up end rear side fixed mounting of retaining ring 5 has elastic beam 15, the inside rear side intermediate position fixed mounting of elastic beam 15 has deformation stopper 16, the outside front end intermediate position of elastic beam 15 is provided with contact plate 17, the inner circle front side position of retaining ring 5 is provided with pothook 18, fixed mounting has unblock button 19 on the outside rear end face of retaining ring 5.

The middle position of the excircle of the sealing retainer ring 6 is fixedly provided with non-return inverted teeth 20, and four groups of deformation space cutting grooves 21 are uniformly distributed on the lower end surface of the sealing retainer ring 6 at equal intervals.

The female joint body 1 comprises inverted teeth 22 and a joint body locking section 23, the inverted teeth 22 and the joint body locking section 23 are fixedly connected together, the middle position of the inner ring of the joint body locking section 23 is provided with a plug-in type check ring limiting surface 24, the outer circle of the joint body locking section 23 is provided with a plug-in type check ring lower channel 25, the inner part of the plug-in type check ring lower channel 25 is fixedly provided with a check ring middle support rod 26, the upper end of the check ring middle support rod 26 is provided with a plug-in type check ring upper channel 27, the outer circle of the inverted teeth 22 is provided with a baffle slot 31, the reverse direction of the baffle slot 31 is opposite to that of the plug-in type check ring lower channel 25, the outer side edge of the baffle slot 31 is fixedly provided with a self-locking baffle side guard plate 28, the outer circle of the joint body locking section 23 is provided with two groups of mold openings 29, the positions of the two groups of mold openings 29 are at the same vertical position as that of the baffle slot, baffle front guard plates 32 are respectively arranged on two side edges of the baffle slot 31, and a fluid flow passage 33 is arranged at the top end of the female joint body 1.

The upper end fixed mounting of locking baffle 4 has push button 34 down, the inside that rectangular channel and groove were seted up to the outside intermediate position of locking baffle 4 is provided with baffle unblock button 35, the left and right sides limit of baffle unblock button 35 is provided with right arm 36 and left arm 42 respectively, the lower extreme fixed mounting of baffle unblock button 35 has auto-lock unblock cantilever 37 and the bottom surface fixed connection in locking baffle 4 outside groove, the lateral surface bottom fixed mounting of locking baffle 4 has baffle 38, the both sides face lower extreme of locking baffle 4 is provided with direction inclined plane 39, fixed mounting has baffle non return pawl 40 and baffle auto-lock pawl 41 is located the upper end of baffle pawl 40 on the lateral surface of auto-lock unblock cantilever 37 respectively, fixed mounting has non return pawl backplate 43 on the medial surface of auto-lock unblock.

The self-reset of the retainer ring 5 is realized by means of the elastic force generated by the extrusion deformation of the self elastic structure and the side wall of the sealing retainer ring 6, and in the process of inserting and mounting the male connector 8 and the female connector body 1, the female connector body 1 and the male connector 8 are clamped by clamping the clamping hook 18 into the male connector clamping groove 9 by utilizing the elastic force, and clear inserting sound signals and shape signals are provided; after the insertion is finished, the clamping state is continuously kept under the action of elastic force; in the disassembly process, an operator presses the unlocking button 19 to overcome the elastic force, the clamping hook 18 is pushed out from the clamping groove 9 of the male connector to complete connector unlocking, the female connector body 1 and the male connector 8 can be separated at the moment, the position of the bump 11 is arranged at the thinnest position where the retainer ring is most easily deformed, the clamping can be completed by utilizing deformation, and the structure of the retainer ring 5 cannot be damaged.

The working pressure of a liquid cooling pipeline of the battery pack of the electric automobile is usually not more than 6bar of the sealing check ring, namely 0.6 Mpa of the sealing check ring, namely a pipeline assembly consisting of a joint and a pipeline is required, and the bursting pressure of the pipeline assembly is required to be more than 6bar of the sealing check ring.

The connection position of the female joint and the male joint is positioned at the position of the inserted type check ring clamping hook, the male joint is an aluminum joint, therefore, the clamping hook is the weakest position of the connection, under the action of the liquid pressure in the pipeline, the clamping hook is stressed by the pressure of the male joint, the failure mode of the clamping hook is cut off, and therefore the shearing strength of the clamping hook determines the connection performance of the joint.

The sealing collar 6 is of annular design and is divided into four downwardly directed cantilever structures by four deformation space slots 21. In the installation of sealing retainer ring 6, the lower edge of cantilever structure will produce inside deformation, and deformation space grooving 21 will be as the deformation space when the cantilever produces the deformation, and sealing retainer ring 6 has the pawl structure, and non return pawl 20 and the draw-in groove joint of the internal wall of joint body are fixed the seal assembly including O type sealing washer 2 and spacer 3 and are avoided seal assembly to deviate from under connecting operating condition in the seal section.

The fluid flow channel 33 is designed into an upper channel and a lower channel, so that the retainer ring 5 is limited by the middle support rod 26 of the retainer ring when moving in the connector, translation is ensured, the insert type retainer ring forms restoring elastic force in the upper channel, meanwhile, accurate clamping connection with the male connector is completed in the lower channel, and plugging failure caused by torsion, deflection and the like of the retainer ring generated by using a single channel with an overlarge size is avoided.

The self-locking secondary locking baffle slot adopts a straight-through design, so that the secondary locking baffle is installed and replaced.

The design of two pawl from top to bottom, utilize the cantilever to have the characteristics of different strokes at the different points of rocking in-process and centre of a circle distance, when the unlock button is pressed to the end, the auto-lock pawl can all be retrieved from the window and accomplish the auto-lock unblock, the baffle can shift up, this moment, secondary locking unblock is accomplished, and the non return pawl is less because of its back travel this moment, and for more reliable, the non return pawl back has been carried out the bodiness design, even the unlock button continues to move backward, the non return pawl also can not be retrieved from the window, therefore the pawl tip can not be retrieved from the auto-lock window when pressing the button down, prevent to carry out secondary locking baffle and pull out from the groove and cause the loss lifting.

The design has the non return piece in inserted sheet formula retaining ring left and right sides, in the installation, the leading-in face of non return piece receives the oppression of joint body window lateral wall, the inserted sheet formula retaining ring begins to warp in the non return piece part, until the total width of inserted sheet formula retaining ring is less than the total width of joint body window, the inserted sheet formula retaining ring begins to get into the joint body, the non return piece is whole to get into the check groove after, because of controlling the width to enlarge, the inserted sheet formula retaining ring non return piece no longer receives the oppression of lateral wall, warp and disappear, simultaneously, the position of non return piece is restricted in the step department that connects inside check groove tip, realize the non return function, the inserted sheet formula retaining ring can not.

The design of inserted sheet formula retaining ring has the deformation roof beam that is used for producing elastic force, ejector pad and the extrusion of sealing ring outer wall contact through deformation roof beam middle part receive the non return effect restriction of the joint body simultaneously, and the deformation roof beam on inserted sheet formula retaining ring upper portion produces initial elastic force, and under the natural state, the inserted sheet formula retaining ring only receives this initial elastic force effect, and the elastic force value this moment also is the minimum elastic force that the inserted sheet formula retaining ring produced, and under this power of effect, the step platform of non return groove tip is hugged closely to the inserted sheet formula retaining ring non return piece.

When the connector is in the inserting process, the male connector is blocked by the clamping hook on the check ring when being installed, the guide-in inclined plane at the lower part of the clamping hook is utilized, the male connector pushes the inserting piece type check ring to one side, at the moment, due to linkage, the elastic beam at the upper part of the inserting piece type check ring moves towards one side of the sealing check ring, the extrusion between the inserting piece type check ring and the sealing check ring is increased, the elastic force is gradually increased, the cambered surfaces matched with the male connector are designed at the edges of the two sides of the clamping hook, the clamping groove is tightly attached to the outer wall of the male connector to slide, when the clamping groove of the male connector rises to the position of the clamping.

When the connector is in the detaching process, an operator presses the detaching button on the inserting piece type check ring with a hand, the elastic force generated by the deformation of the elastic beam is overcome, the clamping hook is pushed out from the clamping groove of the male connector, the unlocking of one-time locking is completed, the male connector can be withdrawn at the moment, and the detachment of the connector is completed.

The slot is a straight-through design, the secondary locking baffle is also a long straight design, the secondary locking baffle is placed along the direction of the baffle slot on the connector body and pushed downwards until the non-return inverted tooth is clamped into the slot window, and at the moment, the baffle cannot be pulled out.

When the clamping hook of the inserting piece type check ring is clamped into the clamping groove of the male connector, after primary locking is completed, secondary locking can be opened, and the primary locking state is locked. Meanwhile, the secondary locking can lock the self state, namely self-locking.

After the locking is opened once, the pothook card advances the male joint draw-in groove promptly, can form a space between inserted sheet formula retaining ring end and the internal wall of joint body, pushes down secondary locking baffle this moment, treats that self-locking button card goes into the slot window and is kept off under slot window crossbeam, accomplishes the auto-lock of the secondary locking of a locking and secondary locking promptly.

Before secondary locking and unlocking, self-locking unlocking is carried out firstly, the self-locking pawl is designed into a structure linked with the unlocking button, when the unlocking button is pressed, the self-locking pawl retreats together and retreats from the rear of a slot window beam to finish unlocking of secondary locking and self-locking, and then the secondary locking baffle can be moved upwards to finish unlocking of secondary locking. And then, the connector can be locked once by pressing a disassembly button of the inserting piece type check ring, so that the connector is disassembled.

Because under the condition that primary locking is not in place, the width of a gap between the inserting piece type check ring and the connector body is smaller than the thickness of the secondary locking stop plate, under the condition, secondary locking cannot be started, namely, the connector can not be inserted, and judgment of completion of poor insertion operation is avoided.

Before the grafting goes on, if the secondary locking has been accomplished, because the secondary locking is the rigidity locking, because the retaining ring retreats the space and is occupied by secondary locking baffle promptly, leads to the inserted sheet formula retaining ring can't retreat, and the joint is accomplished again to the grafting operation at first need insert the male joint, consequently, under the condition that the secondary locking is opened, once the locking can not go on, avoids having accomplished because of the secondary locking, makes the judgement that the grafting has been accomplished.

The PPA material shear strength [ tau ] is 88.9 MPa. According to the formula τ ═ F/a, where F-shear, τ -shear stress, a-shear cross-sectional area, shear stress required to shear the hook:

τ＝F/A

F＝τ·A

the internal liquid pressure required to create such shear stress the internal pressure that the joint can withstand:

F＝τc·Ac＝τ·A

τc＝τ·A/Ac＝88.9×53.7÷326.67.5＝14.6Mpa＝146bar

where Ac is the sum of the cross-sectional areas that are subjected to the pressure of the fluid in the flow channel to generate an axial force.

It can be seen that the pressure of the internal fluid which can be borne by the joint connection is far greater than the pressure which needs to be borne by the internal fluid when the joint normally works, so that the strength required by the normal work can be met.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a quick connector with elasticity is pegged graft and rigidity locking structure, includes female joint body (1), O type sealing washer (2), spacer (3), locking baffle (4), retaining ring (5), sealing retainer ring (6), flange (7), male joint (8) and male joint draw-in groove (9), its characterized in that: the middle position of the female joint body (1) is provided with a circular through hole, two groups of O-shaped sealing rings (2) are arranged, the two groups of O-shaped sealing rings (2) are sleeved at the bottom end inside the female joint body (1), the spacer sleeve (3) is clamped at the middle position of the two groups of O-shaped sealing rings (2), the locking baffle (4) is sleeved at the excircle of the female joint body (1), the check ring (5) is sleeved at the excircle of the female joint body (1), the sealing check ring (6) is sleeved at the lower end of the inner circle of the female joint body (1), the flange (7) is sleeved at the excircle of the lower end of the sealing check ring (6), the male joint (8) is sleeved inside the lower end of the flange (7), and the male joint clamping groove (9) is formed at the excircle of the male joint (8);

a check ring slotted hole (10) is formed in the inner ring position of the check ring (5), bumps (11) are fixedly mounted on two side edges of the check ring (5), a top block (12) is fixedly mounted in the middle of the front end of the outer side of the check ring (5), a secondary unlocking baffle space (13) is formed in the upper end of the top block (12), and an unlocking button (19) is fixedly mounted on the rear end face of the outer side of the check ring (5);

the female joint body (1) comprises inverted teeth (22) and a joint body locking section (23), an inserting piece type check ring lower channel (25) is formed in the excircle of the joint body locking section (23), a check ring middle support rod (26) is fixedly installed inside the inserting piece type check ring lower channel (25), and an inserting piece type check ring upper channel (27) is formed in the upper end of the check ring middle support rod (26);

the upper end fixed mounting of locking baffle (4) has push button (34) down, and the outside intermediate position of locking baffle (4) is seted up the inside in rectangular channel and groove and is provided with baffle unblock button (35), and the left and right sides limit of baffle unblock button (35) is provided with right arm (36) and left arm (42) respectively, and the outside bottom end fixed mounting of locking baffle (4) has baffle (38), and the both sides face lower extreme of locking baffle (4) is provided with direction inclined plane (39).

2. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: the edge of the rear end of the outer side of the retainer ring (5) is provided with a chamfer (14), the rear side of the upper end face of the retainer ring (5) is fixedly provided with an elastic beam (15), the middle position of the rear side of the inner part of the elastic beam (15) is fixedly provided with a deformation limiting block (16), the middle position of the front end of the outer side of the elastic beam (15) is provided with a contact plate (17), and the front side position of the inner ring of the retainer ring (5) is provided with a hook (18).

3. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: the middle position of the excircle of the sealing retainer ring (6) is fixedly provided with non-return inverted teeth (20), and four groups of deformation space cutting grooves (21) are uniformly distributed on the lower end surface of the sealing retainer ring (6) at equal intervals.

4. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: the inverted teeth (22) are fixedly connected with the joint body locking section (23), and a plug-in piece type check ring limiting surface (24) is arranged in the middle of the inner ring of the joint body locking section (23).

5. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: the excircle of pawl (22) department is provided with baffle slot (31) and insert piece formula retaining ring lower passageway (25) reverse opposite, and the outside limit fixed mounting of baffle slot (31) has auto-lock baffle side guard board (28).

6. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: baffle inserting groove windows (30) are arranged in the middle of the two groups of die openings (29), the baffle inserting groove windows (30) are arranged on the outer circle of the joint body locking section (23), baffle front guard plates (32) are arranged on two side edges of the baffle inserting grooves (31), and a fluid flow passage (33) is arranged at the top end of the female joint body (1).

7. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: the outer circle of the joint body locking section (23) is provided with two sets of die openings (29), and the positions of the two sets of die openings (29) and the same vertical position of the baffle slot (31).

8. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: the lower end of the baffle unlocking button (35) is fixedly provided with a self-locking unlocking cantilever (37) and the self-locking unlocking cantilever (37) is fixedly connected with the bottom surface of the outer side groove of the locking baffle (4).

9. The quick connector of claim 1, wherein the quick connector comprises a flexible plug and a rigid locking structure, wherein: baffle non return pawl (40) and baffle auto-lock pawl (41) are located the upper end of baffle non return pawl (40) respectively fixed mounting on the lateral surface of auto-lock unblock cantilever (37), and fixed mounting has non return pawl backplate (43) on the medial surface of auto-lock unblock cantilever (37).