Quick connector

Abstract

A quick connector is used for conveying liquid and comprises a female connector, the female connector comprises a front shell, a piston sleeve, a piston structure and a first spring, the piston sleeve is arranged in a first space of the front shell, and a plurality of sliding block structures are contained in a sliding rail of the front shell so that the piston sleeve can slide in the first space. The piston structure comprises a piston seat, a piston rod and a piston head which are sequentially connected, the piston seat is arranged at the outward opening of the first space of the front shell, the piston head is arranged in the through hole of the piston sleeve, the first spring is arranged in the first space, and the two sides of the first spring abut against the piston sleeve and the piston seat respectively; therefore, the sliding block structure of the piston bush in the quick connector and the sliding rail of the front shell provide a stable rail for the piston bush, the piston bush is effectively prevented from inclining or turning over, and then the liquid leakage problem is avoided.

Description

Technical Field

[0001] The utility model relates to a quick connector, in particular to a quick connector with a piston sleeve slide rail structure and capable of being applied to liquid cooling and heat dissipation. Background Art

[0002] With the rapid development of technology in recent years, the demand for servers has also increased. Servers generate heat during computing, requiring heat sinks to be installed above the chips (heat-generating areas) to prevent the chips or electronic components from burning. In addition to the increased demand for servers, their high-performance computing processes also generate a large amount of heat. Currently, traditional air-cooled heat dissipation systems are no longer able to meet the cooling needs of higher-performance servers. Liquid-cooled heat dissipation systems are gradually becoming the focus of high-power server cooling, effectively removing heat through water-cooling pipes. However, due to the limited space in server cabinets, the configuration of the liquid cooling pipes used for liquid cooling is particularly important. Proper circuit configuration can ensure the server's heat dissipation effect and prevent water-cooling pipe leaks, which could affect the safety of the equipment in the entire server room.

[0003] Quick connectors are a crucial component in liquid cooling systems. They typically consist of a female connector and a corresponding male connector. These connectors are installed in each server within a server rack and are connected to the main liquid cooling pipe via wiring. When the male and female connectors of the quick connector are docked and inserted, the piston sleeve within the structure compresses the spring, causing the piston sleeve to move, allowing liquid (such as coolant) to circulate. Conventional quick connectors use a waterproof ring mounted on the piston sleeve to prevent liquid leakage. However, the overall design of the quick connector lacks control over its movement. In other words, the connector design lacks any mechanism to control or stabilize the position of the internal components, allowing them to move freely within a certain range. This also results in the spring within the female connector quickly rebounding when the male connector of the quick connector is separated, pushing the piston sleeve back into place. However, during this pushback, since the piston sleeve in the quick connector has no direct contact with the inner wall of the housing, the piston sleeve, without any support points, is pushed back by the spring, which can easily cause the piston sleeve to tilt or flip. Once the piston sleeve returns to its original position at an inclined angle, a larger gap is created between the piston sleeve and the inner wall of the housing, thereby increasing the risk of liquid leakage causing a short circuit, and may further affect the equipment in the server room.

[0004] Therefore, it is necessary to provide a quick connector to solve the problem that the piston sleeve of the conventional quick connector is easily tilted or flipped during actuation, thereby avoiding the risk of leakage of the quick connector. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a quick connector with a simple structure and easy operation, which can overcome the defects of the existing technology, effectively prevent the piston sleeve from tilting or flipping during movement, and thus prevent the piston sleeve from being unable to return to its position and causing leakage, further improve the overall stability of the female connector, and avoid displacement or detachment of components during use.

[0006] To achieve the above object, the utility model discloses a quick connector for conveying a liquid, characterized in that the quick connector comprises:

[0007] A female connector, comprising:

[0008] A front housing having a first space and a second space formed therein that are interconnected, a plurality of slide rails formed in the first space, and a plurality of fixing grooves at the opening of the first space;

[0009] a piston sleeve disposed in the first space of the front housing, wherein a plurality of sliding blocks are formed on the exterior of the piston sleeve for being respectively received in the slide rails so as to enable the piston sleeve to slide in the first space, and wherein the piston sleeve has a through hole;

[0010] a piston structure disposed in the first space and comprising a piston seat, a piston rod, and a piston head connected in sequence, the piston seat being fixed to the outward opening of the front housing in the first space through the fixing grooves, and the piston head being disposed in the through hole of the piston sleeve; and

[0011] A first spring is arranged in the first space and has two sides respectively pressing against the piston sleeve and the piston seat, and the first spring is sleeved on the piston rod.

[0012] The piston seat further includes a plurality of protrusion structures corresponding to the fixing grooves, and the protrusion structures and the fixing grooves are riveted to couple the piston structure to the front housing.

[0013] The piston seat further includes a plurality of rib arm structures, one end of each of the rib arm structures is connected to the piston rod, and the other end of each of the rib arm structures extends toward the protrusion structure, so that a plurality of guide flow channel spaces are formed between the rib arm structures.

[0014] Wherein, each fastening groove of the front housing is respectively arranged opposite to a slide rail so that each fastening groove is connected to a slide rail, and the width of the fastening grooves is greater than the cross-sectional width of the slide rails.

[0015] The female connector further includes a rear shell, which is sleeved on the outside of the front shell with an opening toward the first space of the front shell and used to press against the front shell and the piston seat. The rear shell has a third space, which is connected to the first space.

[0016] Among them, it further includes a male connector, which can be movably connected to the front shell of the female connector. The male connector includes an infusion hole, and a fixing member, a second spring and a second piston are arranged in sequence in the infusion hole.

[0017] When the male connector enters the second space from the opening of the second space of the front shell of the female connector, it presses against the piston sleeve and continuously pushes the piston sleeve toward the piston seat, and the piston head presses against the second piston and continuously pushes the second piston toward the fixing member, so that the infusion hole of the male connector, the through hole of the piston sleeve and the first space of the front shell form an infusion channel.

[0018] When the male connector moves away from the piston seat, the first spring pushes against the piston sleeve so that the piston sleeve is located in the first space and moves to an initial position along the slide rails through the slider structures.

[0019] The male connector further includes a positioning protrusion structure, and the front shell further includes a snap element so that when the male connector continues to be pushed toward the piston seat, the snap element is engaged with the positioning protrusion structure of the male connector to enable the male connector to continuously press against the piston sleeve.

[0020] The female connector further comprises an outer shell movably sleeved on the outside of the front shell, and the inner side of the outer shell abuts against the buckle element.

[0021] In summary, the present invention provides a quick connector, in which the slider structure of the piston sleeve is matched with the slide rail of the front shell, so that the slide rail of the front shell provides a stable running track, so that the piston sleeve can move stably in the first space through the slider structure. When the male connector of the quick connector is separated from the female connector, the piston sleeve in the female connector can be stably pushed back to the initial position along the slide rail through the slider structure during the process of being rebounded by the first spring. Compared with the conventional technology, the quick connector of the present invention can effectively prevent the piston sleeve from tilting or flipping during movement, thereby preventing the piston sleeve from being unable to return to its original position (return to its initial position) and causing leakage. In addition, the front shell is further provided with a fixing groove and a protrusion structure of the piston seat, so that the piston seat can be firmly coupled to the front shell, further improving the overall stability of the female connector and preventing the components from being displaced or detached during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure shows an exploded view of a female connector of a quick connector according to a specific embodiment of the present invention.

[0023] Figure 2 Shows the Figure 1 sectional view of the front housing.

[0024] Figure 3 Shows the Figure 1 Cross-sectional view of the piston sleeve.

[0025] Figure 4 Shows the Figure 1 A cross-sectional view of the piston structure.

[0026] Figure 5 Shows Figure 1 A partial schematic diagram of the front housing and piston structure at another angle.

[0027] Figure 6 The figure shows a schematic structural diagram of a female connector and a male connector of a quick connector before connection according to a specific embodiment of the present invention.

[0028] Figure 7 Shows the Figure 6 Exploded view of the male connector.

[0029] Figure 8 A cross-sectional view of a quick connector after connection is shown according to a specific embodiment of the present invention.

[0030] Figure 9 A cross-sectional view showing a male connector of a quick connector according to a specific embodiment of the present invention being pushed toward a piston seat is shown.

[0031] Figure 10 A cross-sectional view showing a male connector engaged with a female connector according to a specific embodiment of the present invention is shown. DETAILED DESCRIPTION

[0032] To facilitate a clearer and more comprehensive understanding of the advantages, spirit, and features of this invention, the following detailed description and discussion will be provided using specific embodiments with reference to the accompanying drawings. It is important to note that these embodiments are merely representative of the present invention, and the specific methods, devices, conditions, materials, and the like exemplified herein are not intended to limit the present invention or its corresponding embodiments. Furthermore, the devices in the drawings are merely intended to illustrate their relative positions and are not drawn to scale, which should be noted.

[0033] Throughout this specification, references to "an embodiment," "another embodiment," or "part of an embodiment" indicate that the specific features, structures, materials, or characteristics described in connection with the embodiment are included in at least one embodiment of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal, transverse, up, down, front, back, left, right, top, bottom, inside, outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] Please also refer to Figures 1 to 4 , Figure 1 The figure shows an exploded view of the female connector 11 of a quick connector according to a specific embodiment of the present invention. Figure 2 Shows the Figure 1 A cross-sectional view of the front housing 111, Figure 3 Shows the Figure 1 A cross-sectional view of the piston sleeve 112, Figure 4 Shows the Figure 1 A cross-sectional view of the piston structure 113. Figures 1 to 4 As shown, the quick connector of the present invention includes a female connector 11. The female connector 11 includes a front housing 111, a piston sleeve 112, a piston structure 113 and a first spring 114. The front housing 111 has a first space 1111 and a second space 1112, and the first space 1111 and the second space are internally connected to each other. Among them, a plurality of slide rails 1113 are formed in the first space 1111, and a plurality of fixing grooves 1114 are provided at the opening of the first space 1111. The piston sleeve 112 can be arranged in the first space 1111 of the front housing 111. A plurality of slider structures 1121 are formed on the outside of the piston sleeve 112, and the slider structures 1121 are used to be respectively accommodated in the slide rails 1113, so that the piston sleeve 112 can slide in the first space 1111. The piston sleeve 112 has a through hole 1122. The piston structure 113 can be disposed in the first space 1111 and comprises a piston seat 1131, a piston rod 1136, and a piston head 1137, which are connected in sequence. The piston seat 1131 is secured to the front housing 111 at the outward opening of the first space 1111 through a retaining groove 1114 of the front housing 111. The piston head 1137 can be disposed in the through-hole 1122 of the piston sleeve 112. A first spring 114 is disposed in the first space 1111, with its two sides respectively abutting the piston sleeve 112 and the piston seat 1131. The first spring 114 is sleeved onto the piston rod 1136.

[0036] The following will be a detailed description of the various components of the female connector, please refer to Figure 1 as well as Figure 2 ,like Figure 1 as well as Figure 2 As shown, the front housing 111 of the female connector of the quick connector of this specific embodiment is a hollow cylindrical structure as a whole, as shown in FIG. Figure 2As shown, the front housing 111 has two main internal spaces, namely a first space 1111 and a second space 1112, and the first space 1111 and the second space 1112 are connected to each other. In practice, the first space 1111 is mainly used to accommodate the piston sleeve 112 and the piston structure 113; the second space 1112 is used to accommodate the male connector. It is worth noting that a plurality of slide rails 1113 are provided inside the first space 1111, and the plurality of slide rails 1113 are used to guide the movement of the piston sleeve 112 so that the piston sleeve 112 can move stably in the front housing 111. The front housing 111 further includes a first limiting structure 1117, a plurality of retaining grooves 1114 and a sealing ring 1115. The first limiting structure 1117 can be used to further limit the position of the piston sleeve 112 in the front housing.

[0037] Next, please also refer to Figure 1 as well as Figure 3 ,like Figure 1 as well as Figure 3 As shown, the piston sleeve 112 of the female connector of the quick connector of this embodiment comprises a through-hole 1122, a first positioning protrusion 1123, a first groove 1124, and a plurality of slider structures 1121. The first positioning protrusion 1123 is disposed around the outside of the piston sleeve 112. The slope angle of the first positioning protrusion 1123 can be consistent with the slope angle of the first limiting structure 1117 of the front housing 111. The first positioning protrusion 1123 is used to limit the position of the piston sleeve 112. The first groove 1124 is disposed at an opening of the piston sleeve 112 and accommodates the first spring 114. The slider structure 1121 is also disposed on the same side of the first groove 1124. The protrusion of the slider structure 1121 can be disposed in the slide rail 1113 of the front housing 111, allowing the piston sleeve 112 to move within the first space 1111 of the front housing 111.

[0038] Next, please also refer to Figure 1 as well as Figure 4 ,like Figure 1 as well as Figure 4As shown, the piston structure 113 of the female connector of the quick connector of this specific embodiment includes a piston head 1137, a piston rod 1136, and a piston seat 1131. The piston head 1137 is generally cylindrical in shape. A sealing ring 1138 is mounted on the outside of the piston head 1137. One end of the piston head 1137 is connected to the piston rod 1136, and the connection is tapered (i.e., the diameter becomes smaller and smaller), which helps reduce resistance to liquid flow. The piston rod 1136 connects the piston head 1137 and the piston seat 1131, and the overall structure is a slender round rod. The piston seat 1131 is disc-shaped and further includes a plurality of protrusion structures 1132 and a second groove 1133. The protrusion structures 1132 are positioned on the piston seat 1131 relative to the position of the retaining groove 1114 of the front housing 111, so that the piston structure 113 can be fixed to the front housing 111 through the protrusion structures 1132 of the piston seat 1131. In practice, the piston head 1137 , the piston rod 1136 and the piston seat 1131 may be integrally formed to form the piston structure 113 .

[0039] Please also refer to Figures 1 to 4 . In practice, the process of assembling the female connector 11 is to first insert the piston sleeve 112 into the opening of the first space 1111 of the front housing 111. The piston sleeve 112 can move in the first space 1111 along the slide rail 1113 to the middle of the interior of the front housing 111 through the slider structure 1121. The slider structure 1121 and the slide rail 1113 can ensure that the piston sleeve 112 can move stably in the first space 1111. At this time, the piston sleeve 112 can further limit the position of the piston sleeve 112 in the front housing 111 through the first limiting structure 1117 of the front housing 111. Then, the first spring 114 and the piston structure 113 are placed in the front housing 111 in sequence. One side of the first spring 114 can be stably set in the first groove 1124 of the piston sleeve 112; the other side is set on the second groove 1133 of the piston seat 1131 of the piston structure 113, so that the first spring 114 can be stably compressed in the first space 1111 or provide elastic thrust.

[0040] When the piston structure 113 is placed into the front housing 111, the protrusion 1132 of the piston structure 113 is secured to the locking groove 1114 of the front housing 111. Once the piston seat 1131 of the piston structure 113 is successfully engaged with the front housing 111, the first spring 114 generates a thrust, forcing the piston sleeve 112 to move toward the second space 1112 of the front housing 111. At this time, because the first retaining structure 1117 of the front housing 111 and the first positioning protrusion 1123 of the piston sleeve 112 both have the same inclination angle, when the first spring 114 pushes the piston sleeve 112, the first retaining structure 1117 of the front housing 111 effectively limits the movement of the piston sleeve 112, ensuring that the piston sleeve 112 moves only within the first space 1111. Furthermore, the sealing ring 1115 of the front housing 111 further fits tightly between the piston sleeve 112 and the inner side of the front housing 111 to prevent liquid leakage.

[0041] It is worth noting that please also refer to Figure 1 as well as Figure 5 . Figure 5 Shows Figure 1 A partial schematic diagram of the front housing 111 and the piston structure 113 at another angle. Figure 1 as well as Figure 5 As shown, when the piston seat 1131 of the piston structure 113 is engaged with the front housing 111, the protrusion structure 1132 of the piston seat 1131 is riveted to the fixing groove 1114 of the front housing 111, thereby effectively fixing the position of the piston structure 113. In this way, not only the stability of the overall structure is ensured, but also the piston structure 113 is prevented from falling off during use. Figure 5 As shown, the piston seat 1131 further includes a plurality of rib structures 1134. One end of each rib structure 1134 is connected to the piston rod 1136, and the other end extends toward the protrusion structure 1132, so that a guide channel space 1135 is formed between each rib structure 1134, and the guide channel space 1135 is used for liquid to flow through.

[0042] Next, please also refer to Figures 1 to 5Furthermore, the female connector 11 also includes a rear shell 115, which is sleeved on the outside of the front shell 111 toward the opening of the first space 1111 of the front shell 111, and is used to press against the front shell 111 and the piston seat 1131. In practice, the third space (not shown) of the rear shell 115 is connected to the first space 1111 of the front shell 111. Liquid can flow from the first space 1111 into the third space through the guide channel space 1135. In practice, the number of the slider structure 1121 of the piston sleeve 112, the protrusion structure 1132 of the piston seat 1131 of the piston structure 113, and the slide rail 1113 and the fixing groove 1114 of the front shell 111 of this specific embodiment is 3, but the number is not limited to this. In addition, the location of the fixing groove at the opening of the front shell is not limited to this. In another embodiment, each fixing groove is arranged relative to each slide rail, and each fixing groove is connected to each slide rail, wherein the width of each fixing groove is greater than the cross-sectional width of each slide rail, so as to further firmly set the piston seat on the opening of the front shell.

[0043] In summary, the slide rails of the front housing of the present invention provide a stable operating path, enabling the piston sleeve to move stably within the first space via the slider structure. Compared to conventional techniques, this effectively prevents the piston sleeve from tilting or flipping during movement. Furthermore, the front housing further features a retaining groove that works in conjunction with the piston seat's protruding structure, ensuring a secure coupling between the piston seat and the front housing. This further enhances the overall stability of the female connector and prevents displacement or detachment of the components during use.

[0044] Next, please also refer to Figure 6 as well as Figure 7 , Figure 6 The figure shows a schematic structural diagram of the female connector 11 and the male connector 12 of the quick connector 1 before connection according to a specific embodiment of the present invention. Figure 7 Shows the Figure 6 Exploded view of the male connector 12. Figure 6 as well as Figure 7 As shown, the quick connector 1 of this embodiment may further include a male connector 12 connected to the female connector 11, and the male connector 12 may be movably connected to the front housing 111 of the female connector 11. Figure 7 As shown, the male connector 12 of the quick connector 1 of this embodiment includes an infusion hole 121 , wherein a fixing member 122 , a second spring 123 and a second piston 124 connected in sequence are disposed in the infusion hole 121 .

[0045] Next, in practical applications, please refer to Figure 1 、 Figure 7 、 Figure 8 、 Figure 9 as well as Figure 10 . Figure 8 The figure shows a cross-sectional view of a quick connector 1 after connection according to a specific embodiment of the present invention. Figure 9 A cross-sectional view showing the male connector 12 of the quick connector 1 according to a specific embodiment of the present invention being pushed toward the piston seat 1131 is shown. Figure 10 The figure shows a cross-sectional view of a male connector 12 engaged with a female connector 11 according to a specific embodiment of the present invention. When the male connector 12 of the quick connector 1 of this specific embodiment enters the second space 1112 from the opening of the second space 1112 of the front housing 111 of the female connector 11, the male connector 12 and the female connector 11 are initially coupled to each other. Figure 8 As shown, at this time, the male connector 12 contacts the piston sleeve 112 of the female connector 11 ; and the second piston 124 of the male connector 12 contacts the piston head 1137 of the female connector 11 .

[0046] Further, please also refer to Figure 1 、 Figure 7 as well as Figure 9 .like Figure 1 、 Figure 7 as well as Figure 9 As shown, the front shell 111 of the female connector 11 of the quick connector 1 of this specific embodiment further includes a snap-on element 1116, which is used to further fix the position of the male connector 12 so that liquid can flow through the inside of the female connector 11 and the male connector 12. The female connector 11 further includes an outer shell 116, which can be movably mounted on the outside of the front shell 111, and the outer shell 116 can be used to push against the snap-on element 1116 to limit the moving direction of the snap-on element and prevent the snap-on element 1116 from falling off. The male connector 12 includes a positioning protrusion structure 125, and the positioning protrusion structure 125 has a slope, which can enable the snap-on element 1116 of the front shell 111 to move along the slope to further limit the movement of the snap-on element 1116. As shown Figure 9As shown, in practice, as the male connector 12 continues to advance toward the piston seat 1131, it continuously pushes the piston sleeve 112, which in turn pushes against the first spring 114, gradually compressing the first spring 114. Simultaneously, the piston head 1137 of the female connector 11 continuously presses against the second piston 124 toward the fixing member 122 of the male connector 12, gradually compressing the second spring 123. In other words, as the male connector 12 continues to advance toward the female connector 11, the male connector 12 can only push the piston sleeve 112 within the female connector 11. During this push, the piston sleeve 112 moves within the first space 1111 along the slide rail 1113 via the slider structure 1121. Subsequently, as the male connector 12 continues to advance toward the piston seat 1131, the latching element 1116 of the front housing 111 contacts the slope of the positioning protrusion 125 of the male connector 12. Furthermore, as the male connector 12 continues to be advanced, the locking element 1116 of the front housing 111 will be pushed upward by the slope of the positioning protrusion structure 125 of the male connector 12 , thereby driving the outer housing 116 to move.

[0047] Then, if Figure 10 As shown, when the male connector 12 continues to advance, the snap element 1116 of the front shell 111 of the female connector 11 will further engage the positioning protrusion structure 125 of the male connector 12 to limit the movement of the male connector 12. At this time, the piston head 1137 and the second piston 124 will be relatively located in the infusion hole 121 of the male connector 12, because the diameters of the front ends of the piston head 1137 and the second piston 124 are smaller than the diameters of the infusion hole 121 of the male connector 12. Therefore, the space formed between the piston head 1137, the second piston 124 and the infusion hole 121 can allow liquid to flow through. Figure 10 As shown, the infusion hole 121 of the male connector 12, the through hole 1122 of the piston sleeve 112, the first space 1111 of the front housing 111, and the third space 1151 of the rear housing 115 of the female connector 11 form an infusion flow channel F. Liquid flows from the infusion hole 121 of the male connector 12 along the second piston 124, then into the through hole 1122 of the piston sleeve 112, into the first space 1111 of the front housing 111, and finally into the third space of the rear housing 115.

[0048] Furthermore, in actual use, when the user wishes to remove the male connector from the female connector, the user can move the outer housing of the female connector to lift the latching element of the front housing upward, and then remove the male connector from the female connector away from the piston seat, thereby separating the male and female connectors. At this time, the first spring rebounds and pushes the piston sleeve, causing the piston sleeve to move back to its original position along the slide rail of the front housing through the slider structure.

[0049] In summary, the present invention provides a quick connector, in which the slider structure of the piston sleeve is matched with the slide rail of the front shell, so that the slide rail of the front shell provides a stable running track, so that the piston sleeve can move stably in the first space through the slider structure. When the male connector of the quick connector is separated from the female connector, the piston sleeve in the female connector can be stably pushed back to the initial position along the slide rail through the slider structure during the process of being rebounded by the first spring. Compared with the conventional technology, the quick connector of the present invention can effectively prevent the piston sleeve from tilting or flipping during movement, thereby preventing the piston sleeve from being unable to return to its original position (return to its initial position) and causing leakage. In addition, the front shell is further provided with a fixing groove and a protrusion structure of the piston seat, so that the piston seat can be firmly coupled to the front shell, further improving the overall stability of the female connector and preventing the components from being displaced or detached during use.

[0050] The above detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention. The disclosure of the preferred embodiments is not intended to limit the scope of the present invention. Rather, the intent is to encompass various modifications and equivalent arrangements within the scope of the patent application for the present invention. Therefore, the scope of the patent application for the present invention should be interpreted broadly based on the above description to encompass all possible modifications and equivalent arrangements.

Claims

1. A quick connector for conveying a liquid, characterized in that The quick connector includes: A female connector, comprising: A front housing having a first space and a second space formed therein that are interconnected, a plurality of slide rails formed in the first space, and a plurality of fixing grooves at the opening of the first space; a piston sleeve disposed in the first space of the front housing, wherein a plurality of sliding blocks are formed on the exterior of the piston sleeve for being respectively received in the slide rails so as to enable the piston sleeve to slide in the first space, and wherein the piston sleeve has a through hole; a piston structure disposed in the first space and comprising a piston seat, a piston rod, and a piston head connected in sequence, the piston seat being fixed to the outward opening of the front housing in the first space through the fixing grooves, and the piston head being disposed in the through hole of the piston sleeve; and A first spring is arranged in the first space and has two sides respectively pressing against the piston sleeve and the piston seat, and the first spring is sleeved on the piston rod.

2. The quick connector according to claim 1, wherein: The piston seat further includes a plurality of convex block structures corresponding to the fixing grooves, and the convex block structures and the fixing grooves are riveted to couple the piston structure to the front housing.

3. The quick connector according to claim 2, wherein: The piston seat further includes a plurality of rib arm structures, one end of each of the rib arm structures is connected to the piston rod, and the other end of each of the rib arm structures extends toward the protrusion structure, so that a plurality of guide flow channel spaces are formed between the rib arm structures.

4. The quick connector according to claim 1, wherein: Each of the fastening grooves of the front housing is respectively arranged opposite to a slide rail so that each of the fastening grooves is connected to a slide rail, and the width of the fastening grooves is greater than the cross-sectional width of the slide rails.

5. The quick connector according to claim 1, wherein: The female connector further includes a rear shell, which is sleeved on the outside of the front shell with an opening toward the first space of the front shell and used to abut the front shell and the piston seat. The rear shell has a third space, which is connected to the first space.

6. The quick connector according to claim 1, wherein: It further comprises a male connector which is movably connected to the front shell of the female connector. The male connector comprises an infusion hole in which a fixing member, a second spring and a second piston are sequentially connected.

7. The quick connector according to claim 6, wherein: When the male connector enters the second space of the front housing of the female connector from the opening of the second space, it abuts against the piston sleeve and continuously pushes the piston sleeve toward the piston seat, and the piston head abuts against the second piston and continuously pushes the second piston toward the fixing member, so that the infusion hole of the male connector, the through hole of the piston sleeve and the first space of the front housing form an infusion channel.

8. The quick connector according to claim 6, wherein: When the male connector moves away from the piston seat, the first spring pushes against the piston sleeve so that the piston sleeve is located in the first space and moves to an initial position along the slide rails through the slider structures.

9. The quick connector according to claim 6, wherein: The male connector further includes a positioning protrusion structure, and the front housing further includes a snap element so that when the male connector continues to be pushed toward the piston seat, the snap element is engaged with the positioning protrusion structure of the male connector to enable the male connector to continuously press against the piston sleeve.

10. The quick connector according to claim 9, wherein: The female connector further comprises an outer shell movably sleeved on the outside of the front shell, and the inner side of the outer shell abuts against the buckle element.

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