TWM628622U - Quick connector for parallel anti-return - Google Patents

Abstract

A parallel anti-return quick connector includes a male connector set and a female connector set, the female connector set can be clamped on the male connector set, the male connector set includes a parallel male connector, and the female connector set includes a Parallel female joints, the other end of each female joint is combined with a bushing component, a piston component is arranged inside the bushing component and the female joint, and a sliding sleeve component is sleeved on the outer wall surface of the female joint and the bushing component; through the above structure, the two The female connectors are set in parallel, so the female connectors can be plugged and unplugged at the same time. When the female connectors are withdrawn from the corresponding male connectors at the same time, the leak-stop related structures in the female connector set will act synchronously to avoid the female connector set during the plugging and unplugging process. There is a leakage problem during and after pulling out.

Description

Quick connector for parallel anti-return

The present invention is a kind of quick connector, especially a kind of quick connector for parallel anti-return applied to the liquid circulation pipeline.

With the rapid development of technology, a lot of information in daily life depends on the operation of IC chips. The higher the computing performance of IC chips, the higher the heat generation performance. High temperature will cause components such as IC chips and substrates to fail. Liquid cooling systems for desktops, notebooks, graphics cards, etc. came into being. Furthermore, automation has become a common industrial type today, and cooling using gas or liquid plays an important role in automation. Therefore, optimization of pipelines for conveying gas or liquid is a direction that manufacturers should pay attention to.

Referring to FIG. 15 , a conventional one-side plug-in quick connector is disclosed, which includes two female connector assemblies 60 and two male connector assemblies 61 . At the end, the male connector assemblies 61 are connected to a cooling water pipe 643, the other ends of the water inlet pipe 641 and the water outlet pipe 642 are connected to a circulating water cooler 62, and one end of each male connector assembly 61 is installed on a notebook On the computer 63, and the cooling water pipe 643 is located inside the notebook computer 63, each of the female connector components 60 is provided with a leak-proof structure, and the volume of each of the male connector components 61 is smaller than that of each of the female connector components 60. If the leak-stop structure is installed on each of the male joint assemblies 61, the liquid circulation flow will be reduced. In order not to affect the flow rate and flow, each of the male joint assemblies The component 61 is not provided with a leak-proof structure, so directly unplugging or inserting any of the female connector components 60 will cause the male connector component 61 corresponding to the cooling water pipe 643 to spray a large amount of liquid. If the transfer pump of the circulating water cooler 62 When the pump is turned on, the liquid in the circulating water cooler 62 will be ejected through the male connector assembly 61 that is not connected to the female connector assembly 60 .

In view of this, the new creator Ben has been engaged in the manufacturing, development and design of related products for many years, aiming at the above-mentioned goals, after detailed design and careful evaluation, finally obtained a truly practical creation.

The present invention is a parallel anti-return quick connector, which includes a male connector set and a female connector set; the male connector set includes two male connectors, a first fixing plate and two first fixing nuts, each of which The center of the joint is axially penetrating, the outer wall of each male joint is annularly protruded with a first limiting flange, the first fixing plate corresponds to the corresponding male joints, and two first through holes are formed through the male joints. The first through holes corresponding to the first fixing plate, the first fixing nuts are screwed with the corresponding male joints, and one surface of the first fixing plate is abutted against the first limiting flanges. On the same side, the male joints are connected in parallel; the female joint set includes a fixed plate assembly and a sliding sleeve assembly, one end of the sliding sleeve assembly is movably clamped to the male joint set; the fixed plate assembly It consists of two female joints, a second fixing plate, two second fixing nuts, two piston assemblies and two bushing assemblies. Two limiting flanges, a first outer ring groove is recessed on one side adjacent to each of the second limiting flanges, a bushing sealing ring is sleeved on each of the first outer ring grooves, and the second fixing plate penetrates Two second through holes, the female connectors pass through the second through holes corresponding to the second fixing plate, the second fixing nuts are respectively screwed with the corresponding female connectors, and the second fixing plate is attached Abut on the same side of the second limiting flanges, so that the female connectors are parallel Each of the bushing components is sleeved with each of the piston components that can be moved back and forth elastically, and each of the bushing components is provided with a male joint sealing ring, and each of the male joint sealing rings provides each of the piston components to abut against, and each of the bushings One end of the assembly with each of the piston assemblies is sleeved on each of the female joints and is different from the end of each of the second fixing nuts, so that each of the piston assemblies is located between each of the bushing assemblies and the interior of each of the female joints. The sliding sleeve assembly is sleeved on the outer wall surface of each of the bushing assemblies and each of the female joints, the sliding sleeve assembly includes two sliding sleeves and a third fixing plate, and the third fixing plate penetrates through two thirds Through holes, one end of each of the sliding sleeves is correspondingly coupled to each of the third through holes; with the above structure, when each of the piston assemblies is forced on each of the male joints and is displaced toward each of the female joints, the The inner channel is communicated with the inner channel of each of the piston assemblies and each of the female connectors. When each of the piston assemblies is not subjected to force on each of the male connectors, each of the piston assemblies is clamped in each of the bushing assemblies, and each of the The piston assembly does not communicate with the internal passages of each of the female connectors.

The advantage of the present invention is that since the female connectors are arranged in parallel in the female connector set, the female connectors can be inserted and pulled out at the same time. When the female connectors are simultaneously withdrawn from the male connectors, the internal The leak-stop related structure will act synchronously to avoid the problem of liquid leakage during the insertion and extraction of the female connector set and after it is pulled out.

[This creation]

10: Male connector set

11: Male connector

111: The first limit flange

112: The first extension

113: The first card protrusion

114: Support section

115: Threading section

116: Combined segment

117: The first bevel card slot

12: The first fixed plate

121: The first through hole

13: The first fixing nut

20: Female connector set

21: Fixed plate assembly

22: Female connector

221: The second limit flange

222: Second extension

223: Second card protrusion

224: The first outer ring groove

23: Second fixed plate

231: Second through hole

232: First Cover Sheet

24: Second fixing nut

25: Piston assembly

251: Piston

2511: Through hole

2512: Opening

2513: Second outer ring groove

2514: Abut the top surface

252: Piston seal ring

253: Piston Spring

26: Bushing assembly

261: Bushing

2611: Steel ball through hole

2612: Clamping slot

2613: Inner ring groove

262: Bushing seal ring

263: Male joint sealing ring

264: Steel ball

265: Sliding spring

266: C-type buckle

27: Sliding sleeve assembly

271: Sliding sleeve

2711: convex part

2712: The second bevel card slot

272: Third fixed plate

2721: The third through hole

30: Protective cover

301: Second cover sheet

40: Circulating water cooler

41: Laptops

421: Water inlet pipe

422: Outlet pipe

423: Cooling water pipe

(accustomed)

60: Female connector assembly

61: Male connector assembly

62: Circulating water cooler

63: Laptop

641: Water inlet pipe

642: Outlet pipe

643: Cooling water pipe

[Figure 1] is a three-dimensional schematic diagram of this creation.

[Fig. 2] This is a three-dimensional schematic diagram of the separation of the male connector set and the female connector set.

[Fig. 3] is a three-dimensional schematic view of the separation of the sliding sleeve assembly and the fixed plate assembly of the female connector set.

[Fig. 4] is a three-dimensional exploded schematic diagram of the male connector set of this creation.

[Fig. 5] is a three-dimensional exploded schematic diagram of the female connector set of this creation.

[Fig. 6] This is a schematic cross-sectional view of the creation of the female connector set that is not engaged with the male connector set, the steel ball is engaged with the inner wall of the sliding sleeve, and the sliding sleeve simultaneously compresses the sliding sleeve spring and the direction of water flow.

[Fig. 7] This is a schematic cross-sectional view of the male connector pushing against the piston assembly and the direction of water flow when the female connector set is engaged with the male connector set.

[Figure 8] After the female connector set is engaged with the male connector set, the steel ball is engaged in the first inclined groove of the male connector, and the spring of the sliding sleeve returns elastically to drive the sliding sleeve to move towards the male connector set. Schematic cross-section of the water flow direction.

[Fig. 9] For this creation, the male connector set is installed on the notebook computer, the female connector set is arranged in parallel on the water inlet pipe and the water outlet pipe, and the female connector set is not combined with the male connector set. The schematic diagram of the liquid circulation.

[Fig. 10] is a schematic diagram of the liquid circulation in which the two female connectors of [Fig. 9] are clamped to the corresponding male connectors at the same time.

[ FIG. 11 ] is a three-dimensional schematic diagram of a second fixing plate extending with a first cover sheet for the present invention.

[ Fig. 12 ] is a schematic exploded perspective view of [ Fig. 11 ].

[FIG. 13] This is a three-dimensional schematic diagram of a protective cover being sleeved on the female connector set.

[ Fig. 14 ] is a schematic exploded perspective view of [ Fig. 13 ].

[FIG. 15] is a schematic diagram of the liquid circulation of the conventional male connector assembly installed on the notebook computer, the female connector assembly is disposed on the water inlet pipe and the water outlet pipe in a single-sided pluggable manner, and only a single female connector assembly is combined with the male connector assembly.

Referring to FIG. 1 and FIG. 2 , a parallel anti-return quick connector is disclosed, which includes a male connection The head cover set 10 and a female joint cover set 20 , one end of the female joint cover set 20 is movably clamped to the male joint cover set 10 .

Referring to FIG. 3 , it is disclosed that the female connector set 20 further includes a fixing plate assembly 21 and a sliding sleeve assembly 27 , and the sliding sleeve assembly 27 is sleeved on one end of the fixing plate assembly 21 .

Referring to FIG. 4 in conjunction with FIG. 2 , it is disclosed that the male joint set 10 includes two male joints 11 , a first fixing plate 12 and two first fixing nuts 13 . A first limiting flange 111 is protruded from the outer wall of the male joint 11 , and the first fixing plate 12 has two first through holes 121 corresponding to the male joints 11 , and the male joints 11 pass through the first fixing plate 12 . The first through holes 121 corresponding to the plate 12, the first fixing nuts 13 are respectively screwed with the corresponding male joints 11, and one side of the first fixing plate 12 is abutted against the first limiting flanges 111 on the same side, so that the male connectors 11 are connected in parallel.

Continuing to refer to FIG. 4 , it is disclosed that a first extension section 112 is extended from a side surface of each of the first limiting flanges 111 of each of the male connectors 11 , and a first clip is disposed at the end of each of the first extension sections 112 The convex portion 113 , the radial cross-section of each of the first locking convex portions 113 is greater than or equal to the radial cross-section of each of the first extending sections 112 , and each of the first locking convex portions 113 is tapered toward each of the first extending sections 112 . Expansion; the other side surface of each of the first limiting flanges 111 of each of the male joints 11 is sequentially extended with a supporting section 114 , a screwing section 115 and a combining section 116 , and the radial cross-section of each combining section 116 smaller than the radial cross-section of each screwing segment 115, the radial cross-section of each screwing segment 115 is smaller than the radial cross-section of each supporting segment 114, and the radial cross-section of each supporting segment 114 is smaller than that of the first fixing plate In the radial section of each of the first through holes 121 of 12 , each of the coupling sections 116 is recessed with a first inclined surface slot 117 , and each of the supporting sections 114 is respectively penetrated through the corresponding each of the first fixing plate 12 . The first through holes 121 and the screwing segments 115 are screwed to the first fixing nuts 13 .

Referring to FIG. 5 in conjunction with FIGS. 2 and 3 , it is disclosed that the fixing plate assembly 21 includes two female joints 22 , a second fixing plate 23 , two second fixing nuts 24 , two piston assemblies 25 and two bushing assemblies 26 , each of which is The center of the female connector 22 is axially penetrating, a second limiting flange 221 is protruded on the outer wall of each female connector 22, and a first limiting flange 221 is recessed on one side adjacent to each second limiting flange 221. The outer ring grooves 224 , each of the first outer ring grooves 224 is sleeved with a bushing sealing ring 262 , the second fixing plate 23 is formed with two second through holes 231 , and the female connectors 22 are penetrated through the second fixing plate 23 Corresponding to the second through holes 231 , the second fixing nuts 24 are respectively screwed with the corresponding female connectors 22 , and the second fixing plate 23 is abutted against the same position of the second limiting flanges 221 . so that each of the female joints 22 is connected in parallel, each of the bushing components 26 is sleeved with each of the piston components 25 that can be moved back and forth elastically, each of the bushing components 26 is provided with a male joint sealing ring 263, and each of the male joints is sealed The ring 263 provides each of the piston assemblies 25 to abut against, and one end of each of the bushing assemblies 26 with each of the piston assemblies 25 is sleeved on the end of each of the female joints 22 that is different from the end of each of the second fixing nuts 24 . Each of the piston assemblies 25 is located between each of the bushing assemblies 26 and the interior of each of the female joints 22; and the sliding sleeve assembly 27 is sleeved on each of the bushing assemblies 26 and part of the outer wall surface of each of the female joints 22 , the sliding sleeve assembly 27 includes two sliding sleeves 271 and a third fixing plate 272. The third fixing plate 272 is provided with two third through holes 2721, and one end of each sliding sleeve 271 is correspondingly combined with each third through hole 2721 , the combination of each of the third through holes 2721 of the third fixing plate 272 is to screw or adhere to one end of each of the sliding sleeves 271 .

Continuing to refer to FIG. 5 , it is disclosed that one end of each of the female connectors 22 adjacent to each of the second fixing nuts 24 is extended to form a second extension section 222 , and a plurality of second locking protrusions 223 are protruded from the outer wall of each of the second extension sections 222 . , each of the second locking protrusions 223 is gradually expanded toward the corresponding second limiting flange 221 .

Referring to FIG. 6 in conjunction with FIG. 1 and FIG. 5 , it is disclosed that each of the piston assemblies 25 includes a piston 251, one end of each of the pistons 251 is a closed abutment surface 2514, the other end of each of the pistons 251 is formed with an opening 2512, the side wall surface of each of the pistons 251 is formed with a plurality of through holes 2511, and each of the openings 2512 communicates with the corresponding Each of the through holes 2511, the outer wall surface of each of the pistons 251 is connected between each of the through holes 2511 and each of the abutting surfaces 2514, and a second outer ring groove 2513 is recessed, and each of the second outer ring grooves 2513 is embedded A piston sealing ring 252, each of the abutting surfaces 2514 is different from a side surface adjacent to the second outer ring groove 2513 and is abutted against one end of a piston spring 253, and the other end of each of the piston springs 253 abuts against the corresponding On the inner wall surface of the female connector 22 , the axial section of each of the piston springs 253 from each of the pistons 251 to each of the female connectors 22 is gradually expanded. Each of the bushing components 26 is a bushing 261 with a plurality of steel ball through holes 2611 pierced through the wall surface, each of the steel ball through holes 2611 is respectively pierced with a steel ball 264, and an inner annular groove 2613 is recessed on the inner wall surface of the bushing 261. The male joint sealing ring 263 is embedded in the inner ring groove 2613, a sliding sleeve spring 265 is sleeved on the outer wall surface of the bushing 261, and a clamping groove 2612 is recessed on the outer wall surface of the bushing 261. The clamping groove 2612 A C-shaped buckle 266 is sleeved. The inner wall surface of each of the sliding sleeves 271 is formed with a convex portion 2711 and a second inclined surface engaging groove 2712. Each of the convex portion 2711 is pressed against the corresponding sliding sleeve spring 265, and each of the second inclined surface engaging grooves 2712 is used for In order to embed the steel balls 264 , when the steel balls 264 are embedded in the second inclined grooves 2712 of the sliding sleeves 271 , the sliding sleeve springs 265 are pushed and compressed by the convex portions 2711 .

Continuing to refer to FIG. 6 , when each of the piston assemblies 25 is not subjected to force on each of the male joints 11 , each of the piston assemblies 25 is clamped in each of the bushing assemblies 26 , and more specifically, in each of the pistons 251 and 26 . The piston springs 253 between the female joints 22 provide elastic force to push against the pistons 251 , so that the pistons 251 are located at the positions of the steel ball through holes 2611 on the inner wall surface of the bushings 261 , so that The steel balls 264 cannot fall out of the steel ball through holes 2611, and the through holes 2511 of the pistons 251 are sealed by the inner walls of the bushings 261. At this time, the openings of the piston assemblies 25 are closed. The ports 2512 cannot communicate with the internal passages of the female connectors 22 through the through holes 2511 .

Referring to FIGS. 7 to 10 , it is disclosed that the male connectors 11 of the male connector set 10 are disposed on the side sockets of a notebook computer 41 , and the above-mentioned sockets are provided with a cooling water pipe 423 inside the notebook computer 41 . When the male connectors 11 are inserted into the notebook computer 41, the male connectors 11 can be connected to the cooling water pipe 423. The female connectors 22 of the female connector set 20 are respectively combined with an inlet pipe 421 and an outlet pipe 421. The water pipe 422 , and the other ends of the water inlet pipe 421 and the water outlet pipe 422 are connected to a circulating water cooler 40 . When each of the piston assemblies 25 is subjected to force on each of the male joints 11 , each of the piston assemblies 25 will exert force to compress each of the piston springs 253 , and at the same time, each of the pistons 251 will be displaced toward each of the female joints 22 , and each of the male joints When the coupling section 116 of 11 penetrates into each of the bushings 261, when each of the first inclined surface grooves 117 moves to the position of each of the steel ball through holes 2611, each of the steel balls 264 will be embedded in each of the first An inclined surface slot 117, when each of the steel balls 264 is embedded in the first inclined surface slot 117 of each of the male joints 11, each of the sliding sleeve springs 265 is elastically returned and pushes each of the sliding sleeves 271 in a direction different from the setting The direction of the third fixing plate 272 is displaced. With the above structure, each of the male joints 11 is engaged with each of the bushes 261 , so that the male joint set 10 and the female joint set 20 are clipped to each other. , and then through the arrangement of each of the piston seal rings 252 and each of the male joint seal rings 263, when the male joint set 10 is combined with the female joint set 20, each of the piston seal rings 252 and each of the male joint seal rings 263 can be closely attached to the inner pipe wall, the internal passages of the male joints 11 are connected to the openings 2512 of the pistons 251, and the openings 2512 of the pistons 251 are connected to the through holes 2511. Each of the through holes 2511 is connected to the internal channel of each of the female joints 22, so when the liquid for heat dissipation flows in through the water inlet pipe 421, it can flow through one of the female joints 22 to the corresponding male joint 11, from After the above-mentioned male connector 11 flows into the cooling water pipe 423 to dissipate heat for the notebook computer 41 , the cooling water pipe 423 flows out to the water outlet pipe 422 through the other male connector 11 , and then returns to the water outlet pipe 422 . Flow into the circulating water cooler 40, and repeat the cycle in the above-mentioned manner, so as to achieve the effect of cooling and cooling. Since the structure of the female connector set 20 of the present application enables the female connectors 22 to be fixed in parallel, the female connectors 22 can be inserted into or pulled out of the corresponding male connectors 11 at the same time, and the liquid can enter the male connector set 10 and the corresponding male connectors 11 at the same time. When the female connector set 20 is completely connected, it will flow again, so that the problem of liquid leakage caused by only inserting any one of the female connectors 22 can be avoided. The above-mentioned embodiments are not limited to the notebook computer 41 , but can also be used for electrical products such as desktop computers and display cards that require heat dissipation.

Referring to FIG. 11 and FIG. 12 , two long sides of the second fixing plate 23 respectively extend a first cover sheet 232 , and the first cover sheets 232 are pressed against the corresponding outer sidewall surfaces of the third fixing plate 272 . If the user holds the second fixing plate 23 and the third fixing plate 272 at the same time, when the female connectors 22 are inserted into or pulled out of the male connectors 11, the sliding sleeves 271 cannot slide normally, thereby causing each The steel ball 264 cannot be smoothly inserted into each of the first sloping grooves 117, and this wrong action will cause excess liquid leakage. Therefore, the design of the first covering sheets 232 can prevent the user from grasping the second fixing plate 23 and the second fixing plate 23 at the same time. The third fixing plate 272 reduces the possibility of liquid leakage.

Referring to FIGS. 13 and 14 , it is disclosed that the female connector set 20 is sleeved with a protective cover 30 on the outer wall surface, and two long sides of the protective cover 30 are respectively extended with a second cover sheet 301 in the same direction. The second covers The inner surface of the sheet 301 is abutted against the corresponding outer sidewall surfaces of the second fixing plate 23 and the third fixing plate 272. The function of the protective cover 30 is the same as that of the first covering sheets 232, which can prevent users from grabbing at the same time. Hold the second fixing plate 23 and the third fixing plate 272 .

The foregoing is a specific description of the technical features of this creation with respect to the preferred embodiments of this creation; however, those who are familiar with this technology can make changes and modifications to this creation without departing from the spirit and principles of this creation. Such changes and modifications shall be covered by the scope defined by the following patent application scope.

10: Male connector set

111: The first limit flange

112: The first extension

113: The first card protrusion

116: Combined segment

12: The first fixed plate

13: The first fixing nut

20: Female connector set

222: Second extension

223: Second card protrusion

23: Second fixed plate

24: Second fixing nut

27: Sliding sleeve components

271: Sliding sleeve

272: Third fixed plate

Claims (7)

A parallel anti-return quick connector, comprising: A male joint set includes two male joints, a first fixing plate and two first fixing nuts, the center of each of the male joints is axially penetrating, and the outer wall surface of each of the male joints is protruded with a first limit the flange, the first fixing plate has two first through holes corresponding to the male joints, the male joints penetrate the first through holes corresponding to the first fixing plate, and the first fixing nuts are respectively Each of the corresponding male joints is screwed, and one side of the first fixing plate is abutted against the same side of the first limiting flanges, so that each of the male joints is connected in parallel; and a female connector set, including a fixed plate component and a sliding sleeve component, one end of the sliding sleeve component is movably clamped to the male connector set; The fixed plate assembly includes two female joints, a second fixed plate, two second fixed nuts, two piston assemblies and two bushing assemblies. The center of each female joint is axially penetrating, and the outer wall surface of each female joint is A second limiting flange is arranged on the annular protrusion, a first outer ring groove is recessed on one side adjacent to each of the second limiting flanges, and a bushing sealing ring is sleeved on each of the first outer ring grooves. Two second through holes are formed through the two fixing plates, the female connectors are inserted through the second through holes corresponding to the second fixing plate, and the second fixing nuts are respectively screwed with the corresponding female connectors. The second fixing plate is abutted against the same side of the second limiting flanges, so that the female connectors are connected in parallel, and each of the bushing assemblies is sleeved with each of the piston assemblies that can be moved back and forth elastically, and each of the bushing assemblies A male joint seal ring is provided, each of the male joint seal rings provides each of the piston assemblies against, and each of the bushing assemblies is provided with one end of each of the piston assemblies, which is sleeved on each of the female joints. Fixing one end of the nut so that each of the piston assemblies is located between each of the bushing assemblies and the interior of each of the female joints; The sliding sleeve assembly is sleeved on the outer wall surface of each of the bushing assemblies and each of the female joints. The sliding sleeve assembly includes two sliding sleeves and a third fixing plate. The third fixing plate passes through two third through holes. a hole, one end of each of the sliding sleeves is correspondingly combined with each of the third through holes; With the above structure, when each of the piston assemblies is subjected to force on each of the male joints and is displaced toward each of the female joints, the internal passages of each of the male joints communicate with the internal passages of each of the piston assemblies and each of the female joints. When the piston assembly is not subjected to force on each of the male connectors, each of the piston assemblies is clamped in each of the bushing assemblies, and each of the piston assemblies is not communicated with the internal channels of each of the female connectors. The parallel anti-return quick connector of claim 1, wherein a first extension section is extended on a side surface of each of the first limiting flanges of each of the male joints, and a first extension section is provided at the end of each of the first extension sections. a first locking protrusion, the radial cross section of each first locking protrusion is greater than or equal to the radial cross section of each first extension section, and each first locking protrusion is gradually expanded toward each first extension section; The other side surface of each of the first limiting flanges of each of the male joints is sequentially extended with a supporting section, a screwing section and a joint section, and the radial cross section of each joint section is smaller than the diameter of each screw section. The radial cross-section of each of the screwing segments is smaller than the radial cross-section of each of the abutting segments, and the radial cross-section of each of the abutting segments is smaller than the radial cross-section of each of the first through holes of the first fixing plate, Each of the coupling sections is recessed with a first inclined surface slot, each of the abutting sections is respectively penetrated through each of the first through holes corresponding to the first fixing plate, and each of the screwing sections is screwed to each of the first Set the nut. The parallel non-return quick connector of claim 2, wherein each of the piston assemblies comprises a piston, one end of each of the pistons is a closed abutment surface, the other end of each of the pistons is formed with an opening, and the sidewall surface of each of the pistons is formed. A plurality of through holes are provided, each of the openings is connected to each of the corresponding through holes, the outer wall surface of each of the pistons is concavely formed between each of the through holes and each of the abutting surfaces, and a second outer ring groove is recessed, and each of the first A piston sealing ring is embedded in the two outer ring grooves. On the inner wall surface of the female connector, the axial section of each of the piston springs from each of the pistons to each of the female connectors is gradually expanded. As claimed in claim 3, the parallel anti-return quick connector, wherein each of the bushing components is a bushing with a plurality of steel ball through holes passing through the wall surface, each of the steel ball through holes respectively passing a steel ball, and the inner wall surface of the bushing is concave An inner ring groove is set, the male joint sealing ring is embedded in the inner ring groove, a sliding sleeve spring is sleeved on the outer wall surface of the bushing, and a clamping groove is recessed on the outer wall surface of the bushing, and the clamping groove sleeve A C-shaped retaining ring is provided, and the inner wall surface of each of the sliding sleeves is formed with a convex portion and a second inclined surface clamping groove, each of the convex portion is pressed against the corresponding sliding sleeve spring, and each of the second inclined surface clamping grooves is It is used to embed the steel balls; when the steel balls are embedded in the second inclined grooves of the sliding sleeves, the sliding sleeve springs are pushed and compressed by the convex parts, and the steel balls are embedded in the sliding sleeves. When the first inclined surface of the male joint is engaged with the groove, each of the sliding sleeve springs elastically returns and pushes each of the sliding sleeves to displace in a direction different from the direction in which the third fixing plate is arranged. The parallel anti-return quick connector of claim 4, wherein one end of each of the female connectors adjacent to each of the second fixing nuts is extended to form a second extension section, and the outer wall of each of the second extension sections is extended. A plurality of second locking protrusions are protruded from the surface, and each of the second locking protrusions is gradually expanded toward the corresponding second limiting flange. The parallel anti-return quick connector of claim 5, wherein two long sides of the second fixing plate extend a first cover sheet respectively, and the first cover sheets are abutted against the corresponding outer sidewall surfaces of the third fixing plate. As claimed in claim 5, the parallel anti-return quick connector, wherein the female connector set is sleeved with a protective cover on the outer wall surface, and two long sides of the protective cover are respectively extended with a second cover sheet in the same direction. The inner surface of the cover sheet is pressed against the corresponding outer sidewall surfaces of the second fixing plate and the third fixing plate.

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