Quick plug connector

Abstract

The utility model provides a quick plug connector, and relates to the technical field of automobile parts. The quick-plug connector is used for being quickly connected with a quick-plug piece and comprises a connector main body, the connector main body comprises a plug-in part and a butt joint part which are communicated in the axial direction, and the quick-plug piece is inserted into the plug-in part; the lock spring is detachably arranged in the inserting part and comprises matching parts which are symmetrically arranged in the circumferential direction; a first guide inclined surface and a first positioning surface are arranged on one side, facing the quick plug-in unit, of the matching part; from one end, deviating from the butt joint part, of the matching part to the other end of the matching part, the first guide inclined surface obliquely extends towards the quick insertion part; the first positioning surface is positioned at one end, close to the butt joint part, of the first guide inclined surface, and abuts against the quick plug-in unit; an anti-abrasion groove is formed in the side, deviating from the quick inserting part, of the matching part. According to the quick-plug connector, the quick-plug piece and the quick-plug connector can be quickly and stably connected into a whole through cooperation of the detachable lock spring and the quick-plug piece, the quick-plug piece is prevented from being pulled out, and meanwhile the quick-plug connector is simple in structure and convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile accessories, in particular to a quick plug connector. BACKGROUND

[0002] The stability of the connection of an automobile oil pipe connector is crucial for the normal operation of a vehicle. In daily use, if the oil pipe connector is loose, fuel leakage may occur, which pollutes the environment and may also cause safety hazards. In addition, fuel delivery efficiency may decrease, engine performance may be damaged, fuel consumption may increase, and other problems may occur. Continuous loosening of the oil pipe connector may also accelerate the aging speed of the oil pipe, increase the risk of damage to the oil pipe system, and thus increase the economic cost of maintenance and replacement.

[0003] The existing oil pipe connector is prone to accidental falling of the male connector after connection due to unstable connection structure, which may cause the above-mentioned hazards. Therefore, a quick plug connector that is quickly and stably connected is needed to realize stable connection between the oil pipe and the quick plug. CONTENT OF THE UTILITY MODEL

[0004] The application provides a quick plug connector that can quickly and stably connect the quick plug and the quick plug connector in one body, prevent the quick plug from being pulled out, and has a simple structure and is convenient to disassemble and assemble.

[0005] The application provides a quick plug connector for quick connection with a quick plug, which comprises a connector main body comprising an insertion part and a butt joint part in axial communication, the insertion part being provided for insertion of the quick plug; a lock spring being detachably arranged in the insertion part and comprising a symmetrical arrangement of a matching part in the circumferential direction; the matching part being provided with a first guide inclined surface and a first positioning surface on the side facing the quick plug; the first guide inclined surface extending obliquely towards the quick plug from one end of the matching part away from the butt joint part to the other end of the matching part; the first positioning surface being located at one end of the first guide inclined surface close to the butt joint part, and the first positioning surface abutting against the quick plug; and the side of the matching part away from the quick plug being provided with an anti-wear groove.

[0006] In a possible implementation, one end of the insertion part away from the butt joint part is provided with a containing part, the containing part being protruded on the outer side wall of the insertion part, and the lock spring is located in the containing part.

[0007] In a possible implementation, the side of the matching part away from the quick plug is further provided with a second guide inclined surface and a second positioning surface connected thereto; the second positioning surface is located at one end of the first guide inclined surface away from the butt joint part and abuts against the top end of the containing part; and the second guide inclined surface extends obliquely towards the inner wall of the containing part from the side of the matching part close to the top end of the containing part to the other side of the matching part.

[0008] In a possible implementation, the lock spring further comprises a pressing part symmetrically arranged along the circumference, and the pressing part is elastically connected between the two side fitting parts; the insertion part is symmetrically provided with a mounting hole along the circumference, and the pressing part extends out of the insertion part through the mounting hole.

[0009] In a possible implementation, the quick insertion connector further comprises at least one sealing ring; the sealing ring is arranged in the insertion part and tightly contacts the connector body and the quick insertion piece.

[0010] In a possible implementation, the sealing ring comprises a first sealing ring and a second sealing ring arranged in sequence.

[0011] In a possible implementation, the quick insertion connector further comprises an isolation ring, and the isolation ring is clamped between the first sealing ring and the second sealing ring.

[0012] In a possible implementation, the insertion part is provided with a sealing part at an end away from the counter-connection part, and the sealing part is provided with a first stop flange at the top end; the first sealing ring, the second sealing ring and the isolation ring are all arranged in the sealing part.

[0013] In a possible implementation, the quick insertion connector further comprises a safety ring; the safety ring is arranged in the sealing part, and an end of the safety ring away from the counter-connection part abuts against the first stop flange, and an end of the safety ring close to the counter-connection part abuts against the first sealing ring.

[0014] In a possible implementation, an outer wall surface of an end of the counter-connection part away from the insertion part is provided with a protruding part.

[0015] The quick insertion connector provided in the application comprises a connector body and a lock spring. The connector body is provided with an insertion part and a counter-connection part in axial communication, and the insertion part is provided for the quick insertion piece to be inserted. The lock spring is detachably arranged in the insertion part and is provided with a fitting part symmetrically arranged along the circumference, and the fitting part is provided with a first guide inclined surface and a first positioning surface on the side facing the quick insertion piece. From an end of the fitting part away from the counter-connection part to the other end of the fitting part, the first guide inclined surface extends obliquely towards the quick insertion piece; the first positioning surface is located at an end of the first guide inclined surface close to the counter-connection part, and the first positioning surface abuts against the quick insertion piece. The side of the fitting part away from the quick insertion piece is provided with an anti-wear groove. In this way, when the quick insertion connector is connected with the quick insertion piece, the quick insertion piece slides downward along the insertion part under the guidance of the first guide inclined surface, and is finally inserted into the bottom of the insertion part and abuts against the first positioning surface, thereby realizing the quick and stable connection of the quick insertion connector and the quick insertion piece. At the same time, since the side of the fitting part away from the quick insertion piece is provided with the anti-wear groove, when the lock spring needs to be disassembled, the wear of the lock spring can be reduced, and the service life of the quick insertion connector is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application. Those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0017] Figure 1 The structure schematic diagram of the connected quick plug connector and quick plug provided by the embodiments of the present application is shown in the figure.

[0018] Figure 2 The three-dimensional structure diagram of the lock spring provided by the embodiments of the present application is shown in the figure.

[0019] Figure 3 The cross-sectional structure diagram of the lock spring provided by the embodiments of the present application is shown in the figure.

[0020] Figure 4 The three-dimensional structure diagram of the connector main body provided by the embodiments of the present application is shown in the figure.

[0021] Figure 5 The structure schematic diagram of the quick plug connector provided by the embodiments of the present application is shown in the figure.

[0022] Figure 6 The structure schematic diagram of the connector main body provided by the embodiments of the present application is shown in the figure.

[0023] Explanation of reference signs:

[0024] 100, quick plug connector; 110, connector main body; 111, plug-in part; 112, accommodating part; 1121, mounting hole; 1122, second stop flange; 1123, stop edge protrusion; 113, sealing part; 1131, first stop flange; 114, butt joint part; 1141, protrusion part;

[0025] 120, lock spring; 121, matching part; 1211, first guide inclined surface; 1212, first positioning surface; 1213, anti-wear groove; 1214, second guide inclined surface; 1215, second positioning surface; 122, pressing part;

[0026] 130, first sealing ring; 140, second sealing ring; 150, isolation ring; 160, safety ring;

[0027] 200, quick plug; 210, boss. DETAILED DESCRIPTION

[0028] Quick connector is a kind of quick connection device, which aims to provide quick and reliable connection and disconnection function. In the field of automobiles, quick connectors are usually applied to connect fuel pipelines, such as fuel supply pipes from fuel tanks to engines. In some cases, they can also be used in other fluid systems, such as cooling liquid or brake fluid pipelines.

[0029] The stability of the connection of automobile fuel pipe joints is crucial for the normal operation of the vehicle. In daily use, if the fuel pipe joint is loose, it may cause:

[0030] (1) Fuel leakage, which not only wastes fuel resources, but also may cause fire in high temperature environment, causing economic loss to the environment and the owner.

[0031] (2) Engine performance degradation, unstable fuel supply may cause engine power shortage, slow acceleration response, and even stall, and long-term neglect may cause permanent damage to the engine.

[0032] (3) Increased emissions, unstable fuel supply may cause incomplete combustion, increasing harmful gas emissions, violating environmental regulations.

[0033] (4) Environmental pollution, leaked fuel will pollute the soil and water, increasing the additional cost of the owner.

[0034] (5) Increased maintenance costs, long-term neglect may cause joint aging and damage, requiring replacement of the entire fuel pipe system, increasing maintenance costs.

[0035] And the existing quick connector is prone to accidental shedding of the male joint after connection due to unstable connection structure, which may cause the above hazards. Therefore, a quick connector that connects quickly and stably is needed to realize stable connection between the fuel pipe and the quick connector.

[0036] Therefore, the embodiments of the present application provide a quick connector for quick connection with a quick connector. The quick connector comprises a joint body and a lock spring. The joint body is provided with an insertion part and a mating part in axial communication, and the insertion part is provided for the quick connector to be inserted. The lock spring is detachably arranged in the insertion part and is provided with a symmetrical matching part in the circumferential direction, and the matching part is provided with a first guide slope and a first positioning surface towards the side of the quick connector. From one end of the matching part away from the mating part to the other end of the matching part, the first guide slope extends obliquely towards the quick connector; the first positioning surface is located at one end of the first guide slope close to the mating part, and the first positioning surface abuts against the quick connector. The side of the matching part away from the quick connector is provided with an anti-wear groove.

[0037] Thus, when the quick plug connector is connected with the quick plug, the quick plug slides along the first guide inclined surface in the axial direction downward under the guidance of the first guide inclined surface, and finally is inserted into the bottom of the plug-in part and abuts against the first positioning surface, so that the quick plug connector and the quick plug are quickly and stably connected. Meanwhile, since the anti-abrasion groove is arranged on the side of the matching part away from the quick plug, when the lock spring needs to be disassembled, the abrasion of the lock spring can be reduced, and the service life of the quick plug connector is improved.

[0038] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0039] Figure 1 The structure schematic diagram of the connected quick plug connector and the quick plug provided by the embodiments of the present application is shown. Figure 2 The three-dimensional structure diagram of the lock spring provided by the embodiments of the present application is shown. Figure 3 The cross-sectional structure diagram of the lock spring in one perspective provided by the embodiments of the present application is shown. Figures 1-3 As shown in the figure, the embodiments of the present application provide a quick plug connector 100, which comprises a connector main body 110 and a lock spring 120. The connector main body 110 comprises an axially communicated plug-in part 111 and a butt joint part 114. The lock spring 120 is detachably arranged in the plug-in part 111. The plug-in part 111 also allows a quick plug 200 to be inserted, so as to realize the connection between the quick plug 200 and the quick plug connector 100.

[0040] The lock spring 120 includes a matching part 121 symmetrically arranged along the circumference, and the matching part 121 is provided with a first guide slope 1211 and a first positioning surface 1212 towards the side of the quick plug 200. From the end of the matching part 121 away from the docking part 114 to the other end of the matching part 120, the first guide slope 1211 extends obliquely towards the quick plug 200, and the first positioning surface 1212 is located at the end of the first guide slope 1211 close to the docking part 114. When the quick plug 100 is connected with the quick plug 200, the quick plug 200 slides axially downward along the inner cavity of the plug-in part 111 under the guidance of the first guide slope 1211 until it is plugged into the bottom end of the inner cavity of the plug-in part 111. At this time, the first positioning surface 1212 located at the end of the first guide slope 1211 close to the docking part 114 abuts against the quick plug 200, realizing the stable connection of the quick plug 200 and the quick plug-in connector 100. For example, the quick plug 200 is provided with a boss 210, and the first positioning surface 1212 abuts against the upper end surface of the boss 210, thereby realizing the stable connection of the quick plug-in connector 100 and the quick plug 200. Specifically, the side of the matching part 121 away from the quick plug 200 is also provided with an anti-wear groove 1213, which is used to reduce the wear of the lock spring 120 when the lock spring 120 is assembled or disassembled, so as to enhance the stability of the whole connector and improve its service life.

[0041] In this way, through the cooperation of the quick plug 200, the plug-in part 111 and the first positioning surface 1212 provided on the lock spring 120, the quick plug-in connector 100 and the quick plug 200 can be quickly and stably connected.

[0042] As an embodiment, the end of the plug-in part 111 away from the docking part 114 is provided with a containing part 112 (refer to Figure 5 ), and the containing part 112 protrudes on the outer side wall of the plug-in part 111, and the lock spring 120 is arranged in the containing part 112. In this way, when the quick plug 200 slides axially downward along the inner cavity of the plug-in part 111 under the guidance of the first guide slope 1211, the lock spring 120 can slightly expand towards the inner wall of the containing part 112 under the extrusion of the quick plug 200, without rigid interference.

[0043] As an implementation, the fitting part 121 is also provided with a second guiding slope 1214 and a second positioning surface 1215 connected to the side away from the quick plug 200. The second positioning surface 1215 is located at the end of the first guiding slope 1211 away from the butt joint part 114, and abuts against the top end of the accommodating part 112. The bottom end of the lock spring 120 abuts against the bottom end of the accommodating part 112. From the side of the fitting part 121 close to the top end of the accommodating part 112 to the other side of the fitting part 121, the second guiding slope 1214 extends obliquely towards the inner wall of the accommodating part 112. In this way, by abutting the second positioning surface 1215 against the top end surface of the accommodating part 112, the lock spring 120 can be prevented from falling out. Moreover, under the action of the second guiding slope 1214, the lock spring 120 can also be quickly installed and removed in the inner cavity of the accommodating part 112.

[0044] Figure 4 A perspective view of the joint body provided by the embodiments of the present application is shown. In some embodiments, the lock spring 120 also includes a pressing part 122 symmetrically arranged along the circumference, which is elastically connected between the two fitting parts 121. The insertion part 111 is symmetrically provided with a mounting hole 1121 (as shown) along the circumference, and the pressing part 122 extends out of the insertion part 111 through the mounting hole 1121. Specifically, the mounting hole 1121 can be symmetrically provided on the accommodating part 112 arranged at the end of the insertion part 111 away from the butt joint part 114, the lock spring 120 is arranged inside the accommodating part 112, and the pressing part 122 extends out of the accommodating part 112 through the mounting hole 1121, so that the lock spring 120 is fixedly arranged in the accommodating part 112. Figure 4

[0045] In this way, the lock spring 120 can be limited by the mounting hole 1121 to prevent it from falling out. Moreover, when it is necessary to disassemble the quick plug 200 and the quick connector 100, the pressing part 122 can be pressed on both sides, and under the elastic action, the two fitting parts 121 expand outward, so that the boss 210 on the quick plug 200 is separated from the first positioning surface 1212, and the quick plug 200 can be quickly disassembled.

[0046] It should be noted that the lock spring 120 can be integrally formed by the same material, and the connection structure between the pressing part 122 and the fitting part 121 is designed to be long and thin, so that it has greater elasticity, thereby realizing the elastic connection between the pressing part 122 and the fitting part 121. The lock spring 120 can also include a fitting part 121 and a pressing part 122 made of hard material and a connecting part made of elastic material, and the fitting part 121 and the pressing part 122 can be integrally connected with the connecting part made of elastic material by bonding or locking. Here, as long as the pressing part 122 can be elastically connected between the two fitting parts 121, the material or shape thereof is not limited. ​

[0047] Figure 5 The structure diagram of the quick connector provided in the embodiment of the present application is shown in FIG. 1. As shown in the figure, the quick connector 100 includes a connector body 110 and a quick connector plug 200. Figure 5 In some embodiments, the quick connector 100 further includes at least one sealing ring. The sealing ring is arranged in the connector portion 111 and tightly contacts the connector body 110 and the quick connector plug 200. Specifically, the sealing ring can be in interference fit with the inner wall of the connector body 110 and the outer wall of the quick connector plug 200 to improve the sealing performance of the quick connector. In this way, the sealing performance of the connection part can be improved to avoid liquid leakage.

[0048] It can be understood that the sealing ring can be an O-shaped sealing ring, a lip-shaped sealing ring, a U-shaped ring, a V-shaped ring or other elastomer seal as long as it can ensure reliability under high pressure and high temperature conditions, which is not limited herein.

[0049] For example, the sealing ring can include a first sealing ring 130 and a second sealing ring 140 arranged in an up-down manner. By using the first sealing ring 130 and the second sealing ring 140 for sealing, the air tightness is stronger than that of a single sealing ring structure, and the risk of leakage of a single sealing structure of a large-size connector can be reduced. In addition, the quick connector 100 can further include a separation ring 150 clamped between the first sealing ring 130 and the second sealing ring 140. The first sealing ring 130 and the second sealing ring 140 can be separated by the separation ring 150 to ensure that the first sealing ring 130 and the second sealing ring 140 work independently, ensure the stability of the double-sealing structure, and also prevent the sealing ring from being extruded or torn under high pressure. Specifically, the separation ring 150 can also tightly contact the connector body 110 and the quick connector plug 200 to reduce the risk of liquid leakage and impurities entering the cavity.

[0050] Figure 6 The structure diagram of the connector body provided in the embodiment of the present application is shown in FIG. 2. As shown in the figure, the connector body 110 includes a connector portion 111, a sealing portion 113 and a receiving portion 112. Figure 6 As shown in the figure, the end of the connector portion 111 away from the mating portion 114 can be provided with the sealing portion 113, and the top end of the sealing portion 113 is provided with a first stop flange 1131. The first sealing ring 130, the second sealing ring 140 and the separation ring 150 are arranged in the sealing portion 113. Specifically, the end of the connector portion 111 away from the mating portion 114, the sealing portion 113 and the receiving portion 112 are connected in sequence, and the top end of the sealing portion 113 is connected with the bottom end of the receiving portion 112 through the first stop flange 1131. In this way, the first sealing ring 130, the second sealing ring 140 and the separation ring 150 can be fixedly arranged in the sealing portion 113 through the first stop flange 1131.

[0051] In one possible embodiment, the quick connector 100 further includes a safety ring 160 (refer to FIG. 3). As shown in the figure, the safety ring 160 is arranged in the receiving portion 112 and tightly contacts the connector body 110 and the quick connector plug 200. Specifically, the safety ring 160 can be in interference fit with the inner wall of the receiving portion 112 and the outer wall of the quick connector plug 200 to improve the sealing performance of the quick connector. In this way, the sealing performance of the connection part can be improved to avoid liquid leakage. Figure 5A safety ring 160 is also arranged in the sealing portion 113, and an end of the safety ring 160 away from the butt joint portion 114 abuts against the first stop flange 113, and an end of the safety ring 160 close to the butt joint portion 114 abuts against the first sealing ring 130. The safety ring 160 is shaped to match the shape of the cavity in the sealing portion 113. The first sealing ring 130, the second sealing ring 140, and the isolation ring 150 can be compressed in the cavity in the sealing portion 113 by the safety ring 160, so as to prevent the first sealing ring 130, the second sealing ring 140, and the isolation ring 150 from coming out, and improve the connection stability of the quick plug connector.

[0052] In some embodiments, the accommodating portion 112 can further be provided with a second stop flange 1122 connected to the top end of the cavity in the accommodating portion 112, and a stop flange protrusion 1123 connected to the mounting hole 1121. Such arrangement can further improve the stability of the lock spring 120 during assembly, and prevent the lock spring 120 from coming out.

[0053] Specifically, the outer diameter of the lock spring 120 is greater than the inner diameter of the cavity surrounded by the second stop flange 1122. When the lock spring 120 needs to be assembled into the accommodating portion 112 in the connector main body 110, the second stop flange 1122 arranged at the inlet of the accommodating portion 112 applies a pressure to the lock spring 120 towards the axis of the connector main body 110. Since the lock spring 120 itself has a certain elasticity, the lock spring 120 is compressed and slides downward along the axis of the connector main body 110 after being pressed. At this time, the anti-abrasion groove 1213 arranged on the side of the fitting portion 121 away from the quick plug 200 can reduce the abrasion of the second stop flange 1122 arranged at the inlet of the accommodating portion 112 to the overall structure of the lock spring 120, and improve the service life of the lock spring. During this process, the pressing portion 122 arranged on the lock spring 120 passes through the mounting hole 1121 symmetrically arranged on the accommodating portion 112 as the lock spring 120 gradually enters the cavity in the accommodating portion 112. When the lock spring 120 is completely assembled into the cavity in the accommodating portion 112, the fitting portion 121 rebounds towards the inner wall of the cavity in the accommodating portion 112, and abuts against the second positioning surface 1215 arranged on the fitting portion 121 and the bottom end of the accommodating portion 112, so as to limit the lock spring 120 at a fixed position. When the lock spring 120 needs to be disassembled, the pressing portion 122 can be pressed to disengage from the limiting of the mounting hole 1121, and the lock spring 120 can be compressed inward to slide upward along the second guide inclined surface 1215 arranged on the fitting portion 121, so as to be finally disengaged.

[0054] The inner diameters of the accommodating portion 112, the sealing portion 113, and the plug-in portion 111 gradually decrease. The inner diameter of the plug-in portion 111 is equal to the outer diameter of the quick plug 200, and the inner diameter of the quick plug 200 is equal to the inner diameter of the butt joint portion 114, so as to reduce the risk of fuel leakage during connection.

[0055] As an implementation, the outer wall surface of the end of the docking portion 114 away from the plug-in portion 111 is provided with a protruding portion 1141. In this way, the anti-pulling-off performance of the quick plug connector 100 when connected with the oil pipe can be improved. It should be noted that the shape of the docking portion 114 can be a straight pipe or a bent pipe, which can be specifically set according to the direction of the oil pipe, and is not specifically limited here.

[0056] As an implementation, the quick plug connector 100 can use corrosion-resistant and high-temperature-resistant materials, such as stainless steel, aluminum alloy, and high-performance plastics (such as polyamide), to improve its high-temperature and high-pressure performance.

[0057] The quick plug connector 100 provided in the application includes a connector main body 110 and a lock spring 120. The connector main body 110 is provided with an axially communicating plug-in portion 111 and a docking portion 114, and the plug-in portion 111 can be inserted into the quick plug 200. The lock spring 120 is detachably arranged in the plug-in portion 111 and is provided with a circumferentially symmetrical matching portion 121, which is provided with a first guide inclined surface 1211 and a first positioning surface 1212 towards the side of the quick plug 200. From the end of the matching portion 121 away from the docking portion 114 to the other end of the matching portion 121, the first guide inclined surface 1211 extends obliquely towards the quick plug 200; the first positioning surface 1212 is located at the end of the first guide inclined surface 1211 close to the docking portion 114, and the first positioning surface 1212 abuts against the boss 210 of the quick plug 200. The side of the matching portion 121 away from the quick plug 200 is provided with an anti-wear groove 1213.

[0058] When it is necessary to connect the quick plug connector 100 with the quick plug 200, the quick plug 200 slides axially downward along the plug-in portion 111 and extrudes the lock spring 120 outward under the guidance of the first guide inclined surface 1211, and is finally inserted into the bottom of the plug-in portion 111. The lock spring 120 rebounds and abuts against the boss 210 of the quick plug 200 through the first positioning surface 1212, realizing the quick and stable connection between the quick plug connector 100 and the quick plug 200.

[0059] When it is necessary to disconnect the quick plug connector 100 from the quick plug 200, the pressing portion 122 of the lock spring 120 can be pressed, and the connecting structure between the pressing portion 122 and the two sides of the matching portion 121 in the lock spring 120 will be elastically deformed under stress, so that the first positioning surface 1212 originally abutting against the boss 210 of the quick plug 200 is separated from the upper end surface of the boss 210 of the quick plug 200. At this time, the quick plug 200 can be directly pulled out, thereby realizing the flexible disconnection between the two.

[0060] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A quick connector for use with a quick connector fitting, characterized by, The utility model relates to a quick plug connector, which comprises a connector body, a lock spring and a quick plug. The connector body comprises an insertion part and a mating part in axial communication, and the insertion part is used for inserting the quick plug. The lock spring is detachably arranged in the insertion part and comprises a plurality of symmetrical matching parts.

2. The quick connector of claim 1, wherein The matching part is provided with a first guide inclined surface and a first positioning surface on the side facing the quick plug.

3. The quick connector of claim 2, wherein, The first guide inclined surface extends obliquely towards the quick plug from the end of the matching part away from the mating part to the other end of the matching part. The first positioning surface is located at the end of the first guide inclined surface close to the mating part, and the first positioning surface abuts against the quick plug.

4. The quick connector of any one of claims 1-3, wherein, The matching part is provided with an anti-wear groove on the side away from the quick plug. The end of the insertion part away from the mating part is provided with a containing part protruding on the outer wall of the insertion part, and the lock spring is located in the containing part.

5. The quick connector of any one of claims 1-3, wherein, The side of the matching part away from the quick plug is further provided with a second guide inclined surface and a second positioning surface connected thereto.

6. The quick connector of claim 5, wherein, The second positioning surface is located at the end of the first guide inclined surface away from the mating part and abuts against the top end of the containing part.

7. The quick connector of claim 6, wherein, The second guide inclined surface extends obliquely towards the inner wall of the containing part from the side of the matching part close to the top end of the containing part to the other side of the matching part.

8. The quick connector of claim 7, wherein, The lock spring further comprises a plurality of symmetrical pressing parts elastically connected between the two matching parts. The insertion part is provided with a plurality of symmetrical mounting holes, and the pressing parts protrude out of the insertion part through the mounting holes.

9. The quick connector of claim 8, wherein, The quick plug connector further comprises at least one sealing ring. The sealing ring is arranged in the insertion part and tightly contacts the connector body and the quick plug.

10. The quick connector of any one of claims 1-3, wherein, The sealing ring comprises a first sealing ring and a second sealing ring arranged in an up-down manner. The quick plug connector further comprises an isolation ring clamped between the first sealing ring and the second sealing ring. The end of the insertion part away from the mating part is provided with a sealing part, and the top end of the sealing part is provided with a first stop flange. The first sealing ring, the second sealing ring and the isolation ring are all arranged in the sealing part. The quick plug connector further comprises a safety ring. The safety ring is arranged in the sealing part, and the end of the safety ring away from the mating part abuts against the first stop flange, and the end of the safety ring close to the mating part abuts against the first sealing ring. The outer wall surface of the end of the mating part away from the insertion part is provided with a protruding part.

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