TWM648985U - Quick joint structure - Google Patents

Abstract

A quick connector structure, which includes: a male and female connector that are in contact with each other; wherein the male connector has a set of fixed valve core with a first spring and a relatively movable and telescopic connection plugged into one end of the female connector. pipe, the outer surface of the connecting pipe is provided with at least a first annular groove and is covered with a second sealing body to increase the sealing performance with the male joint; the connecting pipe corresponds to a joint platform in the female joint, and the joint platform It has a through hole, a movable valve body is movably arranged relative to the through hole, and can open and close the through hole. One end of the fixed valve core supports the sliding valve body to retreat, thereby opening the through hole, so that the male and female The joints are connected. This invention changes the conventional method of installing the sealing body inside the pipe to installing the sealing body outside the pipe, which can prevent the sealing body from being turned over by shearing force when the male and female joints are assembled or disassembled. Or be pulled out and detached, thus improving the overall sealing, pressure resistance and connection reliability.

Description

Quick connector structure

This invention relates to a quick connector structure, especially a quick connector structure that is easy to process and install and has high sealing performance and connection reliability.

According to the current gas supply system or liquid cooling system, pipelines and joints are usually used to connect each unit module. There is flowing gas or liquid inside the pipeline, and each module unit needs to be frequently used and maintained during use and maintenance. Carry out disconnecting and joining operations, but when the pipeline disconnection operation is more cumbersome, leakage may easily occur, affecting the environment and system safety and stability. Therefore, it is necessary to use a quick disconnect connector with a quick disconnect and one-way sealing function ( Quick Disconnect Coupler), commonly known as QDC quick connector. Usually the female end of the quick connector is connected to the fixed module, and one end of the male end is connected to the hose and the other end is connected to the plug end of the female end to connect or disconnect the pipelines in the system.

Please refer to Figure 4 for the existing male and female connection structure, which includes a one-way plug 4 and a one-way socket 5 that are connected to each other. The one-way plug 4 has a plug housing 41, a movable valve 42, Spring 43. The plug housing 41 is composed of a front section 411 and a rear section 412. One end of the plug housing 41 is a plug-in section 413 and the other end is a male connecting section 414. A plug is provided in the plug housing 41. The fluid channel can accommodate the spring 43. The movable valve core member 42 is assembled in the opening corresponding to the plug-in section 413 in the plug fluid channel, and a sealing ring 44 is provided on the peripheral surface of the movable valve member 42. The one-way socket 5 has a socket shell 51, a fixed valve 52, and a spring 53. The socket shell 51 is composed of a front section 511 and a rear section 512, and one end of the socket shell 51 is a snap end 513 and the other end. It is a male connecting section 514, and a socket fluid channel is provided in the socket housing 51 to accommodate the spring 53. The fixed valve core component 52 is assembled in the socket fluid channel to be able to axially communicate with the movable valve component 42. offset each other, and a gap is formed between the outer surface of the fixed valve core member 52 and the inner wall of the socket housing 51 An annular gap is provided with an axially movable movable sealing body 54, and a sealing ring 55 and a sealing ring 56 are respectively provided on the outer wall surface of the fixed valve member 52 and the inner wall of the socket housing 51. Each of them is in radial sealing cooperation with the movable sealing body 54 . When the clamping end 513 of the socket housing 51 is inserted into the plug-in section 413 of the plug housing 41, the sealing ring 56 on the inner wall of the socket housing 51 is used to radially seal with the outer wall of the plug housing 41, and the The insertion section 413 of the plug housing 41 can axially push the movable sealing ring 54 in the socket housing 51 toward the rear section 512, and the movable valve member 42 is pushed against the fixed valve member 52 and enters the plug together. In the plug fluid channel of the housing 41, the respective fluid channels of the plug 4 and the socket 5 are connected, thereby realizing the opening of the one-way valve. However, the above conventional quick connector assembly has the following problems: 1. The sealing ring 56 is fixed on the inner wall of the socket housing 51. Therefore, a sealing ring fixing groove must be formed on the tubular inner wall of the socket housing first. However, based on The size of the tubular diameter is limited, and it is extremely difficult to process the fixing groove recessed on the inner wall of the tubular. It is not easy to measure the diameter and width of the fixing groove, which may easily lead to the disadvantage of inaccurate quality control or the risk of skew; 2. Due to the tubular shape The diameter causes the fixed groove on the inner wall of the socket housing 51 to be shallow, so that the sealing ring can only be positioned shallowly in the fixed groove, or the movable sealing body 54 is positioned between the fixed valve member 52 and the socket housing 51. In this annular gap, during the insertion or extraction process of the plug housing, the sealing ring and sealing body are easily scratched, or the sealing ring and sealing body are susceptible to shearing force and overturning, resulting in the sealing ring coming out or scratches and damage, resulting in failure and leakage problems; 3. In order to alleviate the above-mentioned problems caused by the insertion process of the plug shell in the existing technology, the sealing ring or the inner diameter of the seal is usually set smaller. In this way, the system Reducing the amount of extrusion and deformation caused by the plug shell engagement can alleviate the occurrence of the above-mentioned adverse phenomena. However, due to the reduction of interference deformation, the pressing force also becomes smaller simultaneously, making its resistance to gas and hydraulic pressure smaller, usually inside the pipeline. When operating under pressure above 1.5Mpa, the leakage rate of quick connectors will increase significantly. On the other hand, the aforementioned method of reducing the sealing ring corresponds to a smaller diameter tolerance when processing the fixed groove, and the requirements for machining accuracy must be greatly improved. It will undoubtedly significantly reduce product yield and increase production costs.

In order to effectively solve the above problems, the main purpose of this invention is to provide a quick connector structure, by arranging the sealing body on the outer wall or outer surface of the attachment element of the male and female connectors for docking, thereby avoiding the problem of being trapped in the pipe (hole). Wall processing greatly reduces the difficulty of processing, makes installation more convenient and improves the overall assembly accuracy and quality.

Another purpose of this invention is to provide a quick connector structure. The sealing bodies are sleeved in annular grooves provided on the outer wall or outer surface of the corresponding pipe body to prevent the sealing bodies from being sheared in the axial direction when the quick connector is docked or removed. Problems such as flipping, protrusion or scratching may occur due to shear force, thereby improving the reliability and pressure resistance of the overall seal.

In order to achieve the above purpose, this invention provides a quick connector structure, which includes a male connector, a female connector, and a round tube sliding sleeve; the upper and lower ends of the male connector have a male connecting section and a plug-in section respectively. A connecting pipe that can move relative to the axial direction is inserted inside the plug-in section, and a fixed valve core is provided inside the male joint. One end of the fixed valve core is fixed inside the male joint. The fixed valve core The other end of the connecting pipe extends and passes through the body of the connecting pipe, and a first sealing body is provided at the end of the fixed valve core that seals with the connecting pipe, and both ends of a first spring are respectively supported on the fixed valve. The center and the inwardly retracted portion of the port of the connecting pipe are provided with at least a first annular groove and at least a second sealing body at a position where the outer side of the connecting pipe and the male joint fit together.

The upper and lower ends of the female connector have a receiving section and a female connecting section respectively. There is a joining platform corresponding to the inside of the receiving section, and the joining platform has a through hole. The receiving section is A plurality of holes are provided on the wall of the female joint, and at least one steel ball is provided respectively. A movable valve body and a second spring are provided inside the female joint. The movable valve body can move axially relative to and reciprocally inside the female joint to open or close the aforementioned passage. hole, One end of the second spring supports one side of the movable valve body to keep the movable valve body and the through hole in a normally closed state, and one end of the fixed valve core presses the movable valve body away from the original closed through hole. The male and female connectors are connected to each other, and a third spring is sleeved outside the receiving section of the female connector. The male connector is inserted into the receiving section of the female connector through the plug-in section, and is controlled by the diameter of the steel balls. Lock the male connector inward to prevent it from coming off. The two ends of the circular tube sliding sleeve are open and slidably sleeved on the outside of the female joint and the third spring. The two ends of the third spring are respectively supported on the inner wall of the circular tube sliding sleeve. The protrusion and the protrusion on the outer surface of the female joint keep the round pipe sliding sleeve on the outside of the receiving section of the female joint.

In this invention, the conventional sealing ring arranged on the inner wall surface of the pipe body (or screw hole) of the male and female joints is changed to be arranged on the outer pipe wall at the relative sliding fitting position of the pipe body components, so that on the outside of the pipe body It is more convenient and simple to process the wall surface than the conventional processing in the hole of the pipe body, and the accuracy control is more precise. The sealing ring is instead installed in the annular groove outside the pipe body. The groove provides positioning and fixation of the sealing ring, and when the male and female joint components are relatively plugged into each other and slide with each other, it can prevent the sealing ring from being overturned or the sealing ring from being detached or scratched due to the shear force generated by the reciprocating motion. and other problems, thereby improving the overall sealing performance.

1: Male connector

11: Male head shell

11a: Male connection section

11b: Male screw hole

11c: Bottom surface

11d: Inner ring groove

12: Male lower shell

121:Plug-in section

121a: Internal shrinkage hole

122: Countersunk hole

123:Arc groove

13:Connecting pipe

13a: First section

13aa: External pipe wall

13b:Second section

131: Receiving end

132:Plug end

133: First ring groove

134:Second sealed body

135: The first constriction part

135a: First through hole

135b: medial surface

136:First level department

14:First spring

15: Fixed valve core

151: valve core base

151a: Top side

151b: Bottom side

152: Valve core shaft part

153:Spool head

1531: Ring groove

1532:First sealing body

154:Gap

2:Female connector

21:Female head shell

211: Receiving section

2111:joint platform

2111a: End face

2112: Seal body receiving groove

2113:Third sealed body

2114, 213b: Through hole

2115:Perforation

2116:Steel ball

2117:Second Level Department

212:Screw lock section

22:Female lower shell

221:Female connection section

22a:Female screw hole

22b: Bottom surface

22c:The third level

22e:End face

2211: Annular groove

23:Second spring

231: Upper end

232:Lower end

24: Movable valve body

241: Valve body base

242: Valve body head

243:Gap

2421: Groove

2422:The fourth sealed body

25: Round tube sliding sleeve

251: Upper section

252: Lower section

253: Limiting part

253a: Upper side

254:Conical surface

26:Third spring

261: Upper end

262:lower end

3:Sealed body

Figure 1A is an exploded view of the male connector of the quick connector structure of this creation; Figure 1B is an assembled cross-sectional view of the male connector of the quick connector structure of this creation; Figure 2A is an exploded view of the female connector of the quick connector structure of this creation; Figure 2B is this The female joint assembly sectional view of the created quick connector structure; Figure 3 is the assembled sectional view of the created quick connector structure; Figure 4 is the conventional assembled sectional view.

The above-mentioned purpose of this invention and its structural and functional characteristics will be explained based on the embodiments of the attached drawings.

See Figures 1A, 1B, 2A, 2B, 3. As shown in the figure, the invention is a quick connector structure, which includes a male connector 1 and a female connector 2.

Referring to Figures 1A and 1B, the male connector 1 includes: a male upper shell 11, a male lower shell 12, a connecting pipe 13, a first spring 14 and a fixed valve core 15.

The upper end of the male housing 11 has a male connecting section 11a and is provided with a plurality of external threads. The external threads can be screwed together with the internal threads provided in other gas and liquid pipelines (not shown in the figure) for assembly. catch.

The lower end of the male head shell 11 has a male screw hole 11b. The male screw hole 11b has a plurality of internal threads. The male screw hole 11b has a bottom surface 11c near its bottom. The male screw hole 11b is adjacent to An inner annular groove 11d is formed on the wall surface of the screw hole of the bottom surface 11c.

The upper end of the male lower shell 12 is provided with a plurality of external threads on the outside, and the upper end of the male lower shell 12 is provided with a countersunk hole 122 on the inside. The lower end of the male lower shell 12 has a plug-in section 121 , and the plug-in section 121 has an inner shrink hole 121 a at its end, and the outer surface of the plug-in section 121 has an arcuate groove 123 .

The male upper shell 11 is screw-locked with the external thread at the upper end of the male lower shell 12 through the internal thread in the male screw hole 11b.

The upper and lower ends of the connecting pipe 13 have a receiving end 131 and a plug-in end 132 respectively, and the two ends penetrate each other. The connecting pipe 13 has a first section 13a and a second section 13b, and the outer diameters of the two sections are different, so a first step 136 is formed at the connection point between the two sections.

The outer wall 13aa of the first section 13a of the connecting pipe 13 is provided with at least a first annular groove 133. The first annular groove 133 is embedded with a second sealing body 134, and the insertion hole at the lower end of the connecting pipe 13 is The end of the connecting end 132 is tapered inward toward the center of the connecting pipe 13 to form a first constriction 135 and has a first through hole 135a.

The receiving end 131 of the connecting pipe 13 is connected with the inner shrink hole 121a of the plug-in section 121 of the male lower shell 12 and the outer pipe of the first section 13a of the connecting pipe 13. The wall 13aa is in relative sliding fit with the inner tube wall 12a of the male lower shell 12, that is, the connecting pipe 13 can be retracted into the inside of the male lower shell 12 or extended outward to perform reciprocating motion.

Since the outer diameter of the first section 13a of the connecting pipe 13 is smaller than the inner diameter of the male lower shell 12, the two are configured as a non-tight fit and can perform relative reciprocating movements. In order to provide both The sealing effect during reciprocating movement is achieved by filling or sealing the radial gap between the second sealing body 134 embedded in the first annular groove 133 of the first section 13a, thereby providing axial relative movement. Tightness.

Since the outer diameter of the first section 13a of the connecting pipe 13 is larger than the diameter of the shrink hole 121a of the plug-in section 121 of the male lower shell 12, the outer diameter of the second section 13b is smaller than the diameter of the male lower shell 12. The aperture of the internal contraction hole 121a of the plug-in section 121 is 12, so when the first and second sections 13a and 13b of the connecting pipe 13 are slidingly matched with the male lower shell 12, the first section of the connecting pipe 13 The step portion 136 is clamped at the inner shrinkage hole 121a to form a limit, thereby preventing the connecting tube 13 from being separated from the male lower shell 12 during its reciprocating telescopic movement.

As shown in Figures 1A and 1B, the fixed valve core 15 has a valve core base 151, a valve core stem part 152 and a valve core head 153. The valve core base 151 has a top side 151a and a bottom side. 151b.

The two ends of the valve core body 152 are respectively provided with the valve core base 151 and the valve core head 153. The diameter of the valve core head 153 is larger than the diameter of the valve core body 152, but smaller than the first diameter. The inner diameter of the through hole 135a and the radial outer surface of the valve core head 153 are provided with at least one annular groove 1531, and a first sealing body 1532 is set in the annular groove 1531.

In addition, the valve core shaft portion 152 is sleeved with a first spring 14. The valve core shaft portion 152 and the first spring 14 are inserted into the interior of the male lower housing 12 from the upper end of the male lower housing 12. The bottom side 151b of the valve core base 151 is locked at the bottom of the countersunk hole 122 of the male lower shell 12 .

A sealing body 3 is placed in the annular groove 11d in the male screw hole 11b of the male head shell 11. The male head and lower shells 11 and 12 are screw-locked through internal and external threads, and the fixed valve core 15 is Valve core base 151 The top side 151a abuts the bottom surface 11c of the male screw hole 11b, the bottom side 151b of the valve core base 151 is clamped at the bottom of the countersunk hole 122 of the male lower shell 12, and the valve core base 151 is clamped It is held between the male head and the lower shell 11, 12, and the fixed valve core 15 is fixed and positioned by combining the two, and the sealing body 3 also provides a seal between the male head and the lower shell 11, 12. Tightness.

The outside of the valve core head 153 and the inner wall surface of the first through hole 135a of the connecting pipe 13 must perform relative reciprocating sliding (opening or closing), so the arrangement between the two is not a tight fit. In the normally closed state, the first sealing body 1532 can be used to fill the micro gap between the two, thereby providing a seal between the valve core head 153 and the first through hole 135a of the connecting pipe 13 in the normally closed state. sex.

The valve core base 151 is provided with several notches 154 arranged at equal or unequal intervals, and these notches 154 can serve as channels for fluid to pass through.

As shown in Figure 1B, the fixed valve core 15 and a first spring 14 are housed in the male joint 1, and the first spring 14 is sleeved on the valve core of the fixed valve core 15. Outside the shaft portion 152 , one end of the first spring 14 is supported against the bottom side 151 b of the valve core base 151 of the fixed valve core 15 , and the other end is supported against the inside of the first constriction 135 of the connecting pipe 13 Close to the inner surface 135b next to the first through hole 135a.

Please refer to Figures 2A and 2B. The female joint 2 includes: a female upper shell 21, a female lower shell 22, a second spring 23, a movable valve body 24 and a circular tube sliding sleeve 25.

The upper end of the female head housing 21 has a receiving section 211, and the lower end has a screw lock section 212. The outside of the screw lock section 212 has a plurality of external threads. The inner wall of the receiving section 211 of the female head shell 21 faces A joint platform 2111 protrudes from the center, and the upward side end surface 2111a of the joint platform 2111 has a sealing body accommodating groove 2112, and a third sealing body 3113 is disposed in it. The joint platform 2111 has a sealing body near the center. A through hole 2114 penetrates the joint platform 2111.

The wall surface of the receiving section 211 of the female head housing 21 has a plurality of through holes 2115, and a steel ball 2116 is respectively provided in each of the through holes 2115. The steel ball 2116 can be radially directed toward the female head housing 21 in the through holes 2115. direction, move inward or outward, and the outer diameter of the receiving section 211 of the female head housing 21 is larger than the outer diameter of the screw lock section 212 of the female head housing 21, and a first is formed at the connection between the two. Second level department 2117.

The lower end of the female lower shell 22 has a female connecting section 221, and the outer surface of the female connecting section 221 is provided with a plurality of external threads. The upper end of the female lower shell 22 has a female screw hole 22a. The inner wall of the hole 22a has a plurality of internal threads, and the bottom of the female screw hole 22a has a bottom surface 22b, and there are no internal threads on the wall of the female screw hole 22a close to the bottom surface 22b of the female screw hole 22a to form a ring. Groove 2211, a sealing body 3 is provided inside the annular groove 2211. The female lower shell 22 has a third step portion 22c at one third of its upper end.

The female head upper shell 21 and the female head lower shell 22 are assembled by interlocking internal and external threads, and the sealing body 3 provides a seal between the female head upper shell 21 and the female head lower shell 22. For sealing, after the female head upper shell 21 and the female head lower shell 22 are assembled with each other, a valve body activity space 22d is formed between the joint platform 2111 and the bottom surface 22b.

The movable valve body 24 has a valve body base 241 and a valve body head 242 . The valve body head 242 is formed by extending upward from the upward side of the valve body base 241 . The valve body base 241 has at least one or a plurality of equidistantly or unequally spaced notches 243 . The notches 243 Can be used as a channel for fluid to pass through.

The outer diameter of the valve body head 242 is smaller than the outer diameter of the valve body base 241 , and the outer diameter of the valve body head 242 is smaller than the diameter of the through hole 2114 . The valve body head 242 is adjustable relative to the through hole 2114 . The through hole 2114 can be opened or closed correspondingly by sliding fit. In order to further increase the sealing between the valve body head 242 and the through hole 2114, an outer edge surface of the valve body head 242 is provided. There is at least one groove 2421, and a fourth sealing body 2422 can be disposed in the groove 2421, so that the fourth sealing body 2422 fills the space between the valve body head 242 and the through hole 2114 of the joint platform 2111 The micro gap achieves the sealing effect.

The second spring 23 has an upper end 231 and a lower end 232. The second spring 23 and the movable valve body 24 are arranged in the valve body movable space 22d, and the upper end 231 of the second spring 23 supports On the other side of the valve body base 241 opposite to the valve body head 242, the lower end 232 of the second spring 23 is pressed against the bottom surface 22b, and the second spring 23 pushes up the movable valve body. 24, keep the movable valve body 24 and the through hole 2114 in the center of the joint platform 2111 in a normally closed state.

The circular tube sliding sleeve 25 has an upper section 251 and a lower section 252. The inner wall surface between the upper and lower sections 251 and 252 has a limiting portion 253. The inner surface of the upper section 251 tapers from top to bottom to form a tapered surface 254 .

A third spring 26 is sleeved on the outside of the female head housing 21, and the lower section 252 of the circular tube sliding sleeve 25 is sleeved on the outside of the third spring 26, and is pushed by the upper end 261 of the third spring 26. Support the lower side of the limiting portion 253 of the circular tube sliding sleeve 25, the lower end 262 of the third spring 26 presses an end surface 22e at the upper end of the female head lower shell 22, the limiting portion 253 of the circular tube sliding sleeve 25 An upper side 253a abuts against the second step 2117 of the female head housing 21 so that the circular tube sliding sleeve 25 can move upward relative to the outer axial direction of the female head housing 21 to prevent the circular tube sliding sleeve 25 from moving upward. When the lowermost edge of the lower end of the round tube sliding sleeve 25 slides downward after being detached from the outside of the female head housing 21, it will be limited by the third step portion 22c to prevent the round tube sliding sleeve 25 from detaching downward from the bottom of the female head. Shell 22.

The third spring 26 supports the limiting portion 253 of the circular tube sliding sleeve 25 and pushes the circular tube sliding sleeve 25 upward. The tapered surface 254 located inside the upper section 251 of the circular tube sliding sleeve 25 will be located at The steel balls 2116 in the plurality of through holes 2115 of the receiving section 211 of the female head casing 21 push toward the inside of the female head casing 21 , and the third spring 26 continues to support the round tube sliding sleeve 25 , so that the round tube sliding sleeve 25 The tapered surface 254 of the pipe sliding sleeve 25 remains locked with the steel balls 2116.

When operating the male joint 1 and the female joint 2 in this case to quickly connect, first pull down the circular tube sliding sleeve 25 outside the female head casing 21 to release the conical surface 254 of the circular tube sliding sleeve 25 from the steel balls. 2116 of the locking state, and then the frontmost end surface of the plug end 132 of the connecting pipe 13 of the male joint 1 abuts the third sealing body 2113 at the joint platform 2111 of the female joint 2, and the third Sealing body 2113 provides preliminary sealing between the two in advance, and at the same time, the valve core head 153 and the valve body head 242 of the movable valve body 24 have also butted against each other.

And continue to apply external force to connect the male connector 1 to the female connector 2. Since the male connector 1 and the female connector 2 continue to approach each other, the connecting pipe 13 is subjected to the thrust in the axial direction, and its internal The first spring 14 is also compressed by the axial force at the same time, so the connecting pipe 13 is pressed in the opposite direction and retracts into the inside of the male lower shell 12. When the connecting pipe 13 is retracted into the male head, behind the interior of the lower shell 12, and the insertion section 121 of the male lower shell 12 of the male connector 1 is inserted into the receiving section 211 of the female upper shell 21 of the female connector 2, and the receiving section 211 is provided with The steel balls 2116 are correspondingly locked in the arc-shaped groove 123 outside the plug section 121 so that the male and female connectors 1 and 2 are locked. And then loosen the circular tube sliding sleeve 25 and push the third spring 26 to support the lower side of the limiting portion 253 of the circular tube sliding sleeve 25, and then push the circular tube sliding sleeve 25 upward until it is reset. 254 presses the steel balls 2116 inward to lock, thereby ensuring that the male and female connectors 1 and 2 will not loosen the connection between the male and female connectors 1 and 2 due to excessive internal transmission fluid pressure.

Please refer to Figure 3, and please refer to Figures 1A~2B. As shown in the figure, when the outer tube bodies of the male and female connectors 1 and 2 are joined, the connecting tube 13 is retracted into the inside of the male connector 1, and the male connector 1 The valve core head 153 of the fixed valve core 15 inside 1 will also gradually protrude from the first through hole 135a of the connecting pipe 13 due to the joining action of the male connector 1 and the female connector 2, and continue to The head 242 of the docking movable valve body 24 is supported, and at the same time, the second spring 23 supported on one side of the movable valve body 24 is compressed, and the movable valve body 24 is withdrawn from the original blocking seal. The position of the through hole 213b at the center of the joint platform 2111 makes the through hole 213b unobstructed, allowing fluid to pass through the through hole 213b, so that the male and female connectors 1 and 2 can complete the docking operation.

The main purpose of this case is to improve the processing difficulty of installing the sealing ring in the inner wall of the tube or the screw hole of the traditional quick joint. When the male and female joints are assembled or removed, the shear force generated along the axial direction causes the The sealing ring was turned over or pulled out together, or the sealing ring was scratched or missing. Therefore, in this case, the space where the sealing body was originally installed was (Ring groove), which is conventionally provided on the inner wall surface of the screw hole or round pipe, is changed to be provided on the outer pipe wall at the relative sliding fitting position of the pipe body components. In this way, processing is performed on the outer wall surface of the pipe body, which is relatively smooth. Compared with the conventional method of processing in the hole of the pipe body, it is more convenient and simple, and the precision control is more precise. The sealing ring is set in the ring groove outside the pipe body, and the ring groove provides the sealing ring with Positioning and fixation, and when the male and female joint components are relatively plugged into each other and slide into each other, the sealing rings will not be turned over or pulled out of their original position due to shear force, thus improving the habit. Various deficiencies in knowledge.

The invention has been described in detail above. However, the above description is only one of the preferred embodiments of the invention and cannot limit the scope of implementation of the invention. That is to say, all equivalent changes and modifications made based on the application scope of this creation should still fall within the scope of this patent.

1: Male connector

11: Male head shell

12: Male lower shell

13:Connecting pipe

14:First spring

15: Fixed valve core

151: valve core base

152: Valve core shaft part

153:Spool head

1532:First sealing body

2:Female connector

21:Female head shell

2111:joint platform

2113:Third sealed body

2114:Through hole

2115:Perforation

2116: Steel ball

22:Female lower shell

23:Second spring

24: Movable valve body

241: Valve body base

242: Valve body head

2422:The fourth sealed body

25: Round tube sliding sleeve

26:Third spring

3:Sealed body

Claims (9)

A quick connector structure is provided with: a male connector with a male upper shell, a male lower shell, a connecting pipe and a fixed valve core. The male upper shell and the male lower shell are joined to each other, and the connecting pipe system is in the form of It is slidably inserted into the lower end of the lower housing of the male head. The outer surface of the connecting pipe is provided with at least a first annular groove and is sleeved with a second sealing body. The fixed valve core is sleeved with a first spring. One end of the valve core is fixed inside the male joint, and the other end extends into the connecting pipe; a female joint has a female upper shell, a female lower shell and a round tube sliding sleeve, and the female upper shell and the lower shell are joined to each other And jointly define a valve body activity space. A third spring is sleeved on the outside of the female connector upper shell. The round tube sliding sleeve is slidably sleeved on the female head shell and the third spring. The female connector upper shell is sleeved with a third spring. There is a joint platform inside the head shell. The joint platform is provided with a through hole and a sealing body accommodating groove. A third sealing body is provided in the sealing body accommodating groove. A movable valve body is provided in the valve body activity space. The movable valve body and a second spring, the upper end of the second spring pushes up the movable valve body to seal the through hole of the aforementioned joint platform; after the male and female joints are joined, the connecting pipe is compressed and retracts inward into the male joint. Inside, one end of the fixed valve core extending into the connecting pipe can extend out of the connecting pipe to dock with the movable valve body, and push the movable valve body to move in the direction opposite to the joint platform, so that the original body is subject to the movement The sealed through hole of the valve body is opened to keep the inside of the male and female joints open. The quick connector structure of claim 1, wherein the male connector has a male connection section and a plug-in section, the male connection section is provided at the upper end of the male housing, and the plug-in section is provided at the male The lower end of the male head shell is provided with a plurality of external threads on the outside, and the internal wall of the male head shell is provided with A plurality of internal threads are provided, and a plurality of external threads are provided on the upper end of the male lower shell; the male upper shell is screw-locked with the external threads provided on the outside of the male lower shell through the internal threads. The quick connector structure of claim 1, wherein a female connecting section is provided at the lower end of the female lower shell, and a plurality of external threads are provided on the outer surface, and a receiving section is located at the upper end of the female shell, The lower end of the female housing has a screw lock section and a plurality of external threads on the outside. The quick connector structure of claim 1, wherein the movable valve body has a valve body base and a valve body head. The valve body head is formed by extending upward from one side of the valve body base. The valve body base There are at least one or a plurality of notches arranged at equidistant or unequal intervals on the valve body. The outer edge surface of the valve body head is provided with at least one groove, and a fourth sealing body is provided in the groove. The quick connector structure of claim 3, wherein the third spring is sleeved on the outside of the female head housing, and the lower section of the round tube sliding sleeve is sleeved on the outside of the third spring, and the third spring The upper end of the third spring presses against the lower side of the limiting portion of the circular tube sliding sleeve, the lower end of the third spring presses against an end surface at the upper end of the lower shell of the female head, and the upper side of the limiting portion of the circular tube sliding sleeve presses against At the second step of the female head housing, the round tube sliding sleeve is allowed to reciprocate upward or downward along the external axial direction of the female head housing to prevent the round tube sliding sleeve from being separated from the outside of the female head housing. . The quick connector structure as claimed in claim 1, wherein the circular tube sliding sleeve has an upper section and a lower section and both ends are open, and there is a limit on the inner wall surface between the upper and lower sections. The inner surface of the upper section of the circular tube sliding sleeve has a tapered surface, and the upper and lower ends of the third spring are respectively supported by the limiting portion of the circular tube sliding sleeve and the outer surface of the female joint. bulge. The quick connector structure as described in claim 2, wherein the upper and lower ends of the connecting pipe have a receiving end and a plug-in end respectively, and the receiving end of the connecting pipe is plugged into the plug-in section and can relative to the insertion The connecting section is axially movable, and the connecting pipe has a first shrinking portion, and the first shrinking portion has a first through hole. The quick connector structure of claim 1, wherein the fixed valve core has a valve core base, a valve core stem extending from one side of the valve core base, and the end of the valve core stem has a valve core head. , the outer surface of the valve core head is provided with at least one annular groove and is covered with a first sealing body. The upper end of the first spring supports the fixed valve core, and its lower end is pressed against the first constriction of the connecting pipe. interior. The quick connector structure as described in claim 1, wherein the upper and lower ends of the female connector have a receiving section and a female connecting section respectively, and the wall surface of the receiving section is provided with a plurality of holes, and each is provided with at least A steel ball, the bottom inside the female connection section has a bottom surface, there is a movable valve body space between the lower side of the joint platform and the bottom surface, the movable valve body has a valve body base and a valve body head, the The base of the valve body is provided with a plurality of notches. The upper end of the second spring upwardly supports the movable valve body, and the lower end thereof presses downwardly against the bottom surface, so that the movable valve body seals the through hole.