CN220134925U - Quick connector and main body seat thereof - Google Patents

Abstract

The utility model relates to a quick connector and a main body seat thereof. The positioning base is provided with an inserting through hole, the hole wall of the inserting through hole is provided with a plurality of mounting through holes which are arranged at intervals along the circumferential direction of the inserting through hole, at least one of the mounting through holes is provided with a ball, and at least part of the ball can protrude into the inserting through hole. The positioning base is assembled in the shell, and a pressing gap exists between the part, provided with the mounting through hole, of the positioning base and the channel wall of the assembly channel in the shell. The pressing piece is axially slidably arranged in the assembly channel along the assembly channel, the pressing piece comprises a pressing part and a water retaining part, water flow can impact the water retaining part located at the upstream of the insertion through hole in the flowing process, the pressing part is located in the pressing gap and abuts against the outer side of the ball, the greater the depth of the pressing part inserted into the pressing gap is, the greater the pushing distance of the ball to the insertion through hole is, the pressing piece can always press the ball on the joint, and the reliable connection between the joint and the main body seat is ensured.

Description

Quick connector and main body seat thereof

Technical Field

The utility model relates to the technical field of quick connectors, in particular to a main body seat of a quick connector.

Background

The quick connector is mainly used for connecting a plurality of pipelines, has the characteristics of convenient operation, repeated use and the like, and is widely used in the fields of industrial production, bathroom water heating and the like. In complex and various assembly environments, the situation that the space is narrow and two hands cannot operate exists. Based on this, quick connectors in the form of snap-ins have been developed. The quick connector in the form of quick plug generally comprises a housing and a connector which can be plugged into the housing, wherein the housing is arranged on one pipeline, and the connector is used for being communicated with the other pipeline, so that the connection of the two pipelines can be realized after the connector is plugged into the housing, and the installation is quick. The quick connector of the quick-connect type has a problem of insufficient connection reliability after installation.

Disclosure of Invention

Based on this, it is necessary to provide a quick connector to the problem that the connection reliability is insufficient, and rivers can strike and shelter from the pressure portion at the grafting through-hole upper reaches at the in-process that flows to the rivers can always provide the effort along the rivers direction for the pressure piece, make the pressure piece can always provide great thrust for the ball, make the ball can compress tightly on the connector, guarantee the connection between connector and the main part seat reliable.

A body mount for a quick connector, comprising:

the shell encloses an assembly channel with two open ends;

the positioning base is provided with an inserting through hole for inserting a joint, the hole wall of the inserting through hole is provided with a plurality of mounting through holes, the mounting through holes are arranged at intervals along the circumferential direction of the inserting through hole, at least one of the mounting through holes is provided with a ball, at least part of the ball can protrude into the inserting through hole, the positioning base is assembled in the assembling channel, and a pressing gap exists between the part provided with the mounting through hole on the positioning base and the channel wall of the assembling channel;

the pressing piece is installed in the assembly channel in an axially slidable mode along the assembly channel, the pressing piece comprises a pressing portion and a water blocking portion, the water blocking portion is blocked at the upstream of the insertion through hole, water flowing into the assembly channel can flow into the insertion through hole after impacting the water blocking portion, the pressing portion is located in the pressing gap and abuts against the outer side of the ball, and the greater the depth of the pressing portion inserted into the pressing gap in the water flow direction is, the greater the pushing distance of the ball to the insertion through hole is.

In one embodiment, the pressing member includes a cylinder slidably installed in the assembly passage along an axial direction of the assembly passage, one end of the cylinder is the pressing portion, an inner diameter of the pressing portion gradually increases in a direction away from the other end of the cylinder, and the water blocking portion is connected to the cylinder.

In one embodiment, the pressing piece further comprises an impact-resistant disc, the impact-resistant disc is located in the cylinder, an outer ring of the impact-resistant disc is connected with the cylinder, a plurality of water passing holes are formed in the outer edge of the impact-resistant disc, and the middle of the impact-resistant disc is the water retaining portion.

In one embodiment, the diameter of the water blocking portion is not less than half of the inner diameter of the cylinder.

In one embodiment, the main body seat further comprises an elastic member, the elastic member acts between the housing and the pressing member, and the elastic member provides an elastic force for the pressing member in a direction consistent with an impact force of the water flow impacting the water blocking portion.

In one embodiment, the channel wall of the assembly channel is further provided with an installation groove, and the installation groove is positioned at the upstream of the water blocking part;

the main body seat further comprises a retainer ring and a bearing piece, the outer edge of the retainer ring is clamped in the mounting groove, the inner edge of the retainer ring protrudes out of the mounting channel, the bearing piece is annular, the bearing piece and the retainer ring are coaxially arranged, and the bearing piece is placed on the surface, facing the water retaining part, of the retainer ring;

the elastic piece comprises a compression spring, the expansion direction of the compression spring is parallel to the conduction direction of the assembly channel, one end of the compression spring is abutted to the pressing piece, and the other end of the compression spring is abutted to the supporting piece.

In one embodiment, an annular positioning groove is formed in the end face, facing the water retaining part, of the bearing member, and one end, abutting against the bearing member, of the compression spring is located in the positioning groove;

and/or one end of the compression spring, which is abutted with the pressing piece, is positioned in the cylinder and is abutted with the impact-resistant disc.

In one embodiment, the positioning base comprises a base barrel, the base barrel is assembled in the assembly channel, the space surrounded by the base barrel is the insertion through hole, each installation through hole penetrates through the base barrel along the wall thickness direction of the base barrel, the aperture of each installation through hole gradually decreases in the direction close to the inner side of the insertion through hole, the aperture of an opening formed in the inner wall surface of the base barrel on the installation through hole is an inner aperture, the inner aperture is not larger than the diameter of the ball, the aperture of an opening formed in the outer wall surface of the base barrel on the installation through hole is an outer aperture, the outer aperture is not smaller than the diameter of the ball, and the barrel section provided with the installation through hole on the base barrel and the shell form the pressing gap at intervals.

In one embodiment, the main body seat further comprises a snap ring, an annular clamping groove is formed in the outer wall surface of the base barrel, each mounting through hole is located on one side, away from the water retaining portion, of the annular clamping groove, each mounting through hole is partially overlapped with the annular clamping groove, the snap ring is clamped in the annular clamping groove, and the positions, corresponding to the corresponding mounting through holes, of the snap ring are expanded into the mounting through holes.

In one embodiment, the cross section of the annular clamping groove is semicircular, and the cross section of the clamping ring is identical to the cross section of the annular clamping groove.

In one embodiment, the base barrel is axially divided into a first barrel section and a second barrel section, the first barrel section is in threaded fit with the shell, a pressing gap is formed between the second barrel section and the shell at intervals, the second barrel section is located at one side, close to the water retaining part, of the first barrel section, the mounting through hole is formed in the second barrel section, a boss is arranged at one end, far away from the second barrel section, of the first barrel section, the boss is located outside the shell and is in butt joint with the end face of the shell, and a first sealing ring is arranged between the first barrel section and the shell.

The quick connector comprises a connector and any main body seat, wherein the connector is inserted into the insertion through hole, a second sealing ring is arranged between the connector and the positioning base, a circle of limiting groove is formed in the position, corresponding to the ball, of the connector, the section of the limiting groove is arc-shaped, and the ball is clamped in the limiting groove.

The above scheme provides a quick-operation joint and main part seat thereof, and after the joint inserts the grafting through-hole, the ball is pressed between joint and pressure portion. When water is introduced into the assembly channel, water flows in from one end of the assembly channel far away from the joint and flows out from the joint. The water flow can impact the pressing part which is blocked on the inserting through hole in the flowing process, so that the water flow can always provide acting force for the pressing piece to flow along the water flow direction. The greater the depth of the pressing part inserted along the water flow direction is, the more the balls are extruded into the insertion through holes, so that under the impact force of the water flow, the pressing part can always provide larger pushing force for the balls, the balls can be pressed on the joint, the connection between the joint and the main body seat is ensured to be reliable, and the connection tightness between the joint and the main body seat is higher.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a quick connector according to the present embodiment;

FIG. 2 is an exploded view of the quick connector of FIG. 1;

FIG. 3 is a schematic view of the positioning base according to the embodiment;

fig. 4 is a front view of the positioning base according to the present embodiment;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4;

FIG. 6 is a partial enlarged view at B in FIG. 5;

FIG. 7 is a cross-sectional view of the pressure member according to the present embodiment;

FIG. 8 is a cross-sectional view of the quick connector just after insertion of the connector;

FIG. 9 is a cross-sectional view of the quick connector with the ball pressed by the connector and the ball not entering the limit groove;

FIG. 10 is a cross-sectional view of the quick connector after the connector is in place;

fig. 11 is a schematic view of the quick connector according to the present embodiment when mounted on a pipeline.

Reference numerals illustrate:

10. a quick connector; 11. a joint; 111. a limit groove; 112. a second seal ring; 20. a main body seat; 21. a housing; 211. assembling the channel; 212. a pressing gap; 213. a mounting groove; 22. positioning a base; 221. a base barrel; 2211. inserting through holes; 2212. mounting through holes; 2213. an annular clamping groove; 2214. a first barrel section; 2215. a second barrel section; 222. a ball; 223. a boss; 224. a first seal ring; 23. a pressurizing member; 231. a cylinder; 2311. a pressing section; 2312. extruding the inclined plane; 232. an impact resistant disc; 2321. a water blocking part; 2322. a water passing hole; 24. an elastic member; 25. a retainer ring; 26. a support; 261. a positioning groove; 27. a clasp; 30. a pipeline.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In some embodiments, the present utility model provides a main body seat 20 of a quick connector 10, as shown in fig. 1 and 2, the main body seat 20 includes a housing 21, a positioning base 22, and a pressing member 23. The housing 21 encloses an assembly channel 211 open at both ends.

As shown in fig. 3 to 5, the positioning base 22 is provided with a plugging through hole 2211 for inserting the connector 11, the hole wall of the plugging through hole 2211 is provided with a plurality of mounting through holes 2212, and the plurality of mounting through holes 2212 are arranged at intervals along the circumferential direction of the plugging through hole 2211.

As shown in fig. 8 to 10, at least one of the plurality of the mounting through holes 2212 is equipped with a ball 222, and the ball 222 can protrude at least partially in the insertion through hole 2211. The positioning base 22 is fitted in the fitting passage 211, and a pressing gap 212 exists between a portion of the positioning base 22 where the mounting through hole 2212 is provided and a passage wall of the fitting passage 211.

The pressing member 23 is slidably installed in the fitting passage 211 along the axial direction of the fitting passage 211, and the pressing member 23 includes a pressing portion 2311 and a water blocking portion 2321. The water blocking portion 2321 is blocked at the upstream of the insertion through hole 2211, and the water flow entering the assembly passage 211 can flow into the insertion through hole 2211 after impacting the water blocking portion 2321. The pressing portion 2311 is positioned in the pressing gap and abuts on the outer side of the ball 222, and the greater the depth of the pressing portion 2311 inserted into the pressing gap in the water flow direction, the greater the distance it pushes the ball 222 into the insertion through hole 2211.

When water is introduced into the fitting passage 211, water flows in from an end of the fitting passage 211 away from the joint 11, and then flows out from the joint 11. The water flow can impact the water blocking portion 2321 blocked on the insertion through hole 2211 during the flowing process, so that the water flow can always provide the acting force for the pressing piece 23 to flow along the water flow direction, and the pressing piece 23 can flow along the water flow direction as far as possible relative to the housing 21. The greater the depth of insertion of the pressing portion 2311 along the water flow direction, the greater the distance that the ball 222 is pushed into the insertion through hole 2211, so that the pressing member 23 can always provide a greater pushing force for the ball 222 under the impact force of the water flow, so that the ball 222 can be pressed on the joint 11, the connection between the joint 11 and the main body seat 20 is ensured to be reliable, and the connection tightness between the two is higher. The greater the water pressure, the higher the reliability of the connection between the joint 11 and the main body seat 20.

Specifically, in some embodiments, as shown in fig. 7, the pressing portion 2311 has a pressing slope 2312 thereon, the pressing slope 2312 is disposed obliquely with respect to the axial direction of the insertion through hole 2211, and the interval between the pressing slope 2312 and the axis of the insertion through hole 2211 in the water flow direction is gradually increased. The ball 222 abuts the pressing slope 2312. When the pressing member 23 has a sliding movement in the water flow direction under the impact of the water flow, the smaller the distance between the position of the pressing slope 2312 in contact with the ball 222 and the axis of the insertion through hole 2211, the larger the amount of pressing of the ball 222 into the joint 11, the more reliable the fit between the ball 222 and the joint 11, and the more the joint 11 cannot be pulled out from the main body seat 20.

As shown in fig. 7 to 10, in one embodiment, the pressing member 23 includes a cylinder 231, the cylinder 231 is slidably installed in the fitting passage 211 along the axial direction of the fitting passage 211, one end of the cylinder 231 is the pressing portion 2311, and the inner diameter of the pressing portion 2311 is gradually increased in a direction away from the other end of the cylinder 231. The inner circumferential surface of the pressing portion 2311 is the pressing slope 2312. The water blocking portion 2321 is connected to the cylinder 231.

When the water flow hits the water blocking portion 2321, the entire pressing piece 23 has a tendency to flow in the water flow direction, so that the inner circumferential surface of the pressing portion 2311 can abut against the balls 222, and the pressing portion 2311 can continuously provide the force to the balls 222 as long as the water flow circulates. When the cylinder 231 moves in the water flow direction, the inner diameter of the position of the cylinder 231 where the balls 222 contact gradually decreases, the balls 222 move in the direction approaching the axis of the insertion through hole 2211, and the force with which the balls 222 press the joint 11 increases. The greater the water pressure, the more reliable the ball 222 limits the joint 11.

Alternatively, in other embodiments, the thickness of the pressing portion 2311 is gradually reduced in the water flow direction, and when the pressing member 23 moves in the water flow direction, the thickness of the pressing portion 2311 pressed between the ball 222 and the housing 21 is gradually increased, and thus the greater the pressing force applied to the ball 222, the greater the protrusion of the ball 222 into the insertion through hole 2211.

It should be noted that, when the water impact force reaches a certain level, or when the pressing member 23 moves to a certain position along the water flow direction, the balls 222 are pressed and moved into the insertion through holes 2211 to reach a limit position, and even if the water impact force continues to increase, the balls 222 cannot move continuously, so the pressing member 23 will remain at the current position and have a tendency to move along the water flow direction.

Although the water blocking portion 2321 is blocked upstream of the insertion through hole 2211, the passage is not completely blocked, and the water flow may continue into the insertion through hole 2211.

In particular, in some embodiments, as shown in fig. 7, the pressing member 23 further includes an impact-resistant disc 232, a plurality of water through holes 2322 are provided at an outer edge of the impact-resistant disc 232, and the water blocking portion 2321 is provided in a middle portion of the impact-resistant disc 232. The impact tray 232 is connected to the pressing portion 2311. When the water flow impacts the impact-resistant disc 232, the water blocking portion 2321 serves as a force receiving component to receive the impact force from the water flow, and the water passing holes 2322 are used for allowing the water flow to pass through, so that the normal circulation of the water flow in the main body seat 20 is ensured.

In further detail, in one embodiment, as shown in fig. 7, the impact-resistant disc 232 is positioned within the cylinder 231, and an outer ring of the impact-resistant disc 232 is connected with the cylinder 231.

As shown in fig. 8 to 10, the water flow entering the fitting passage 211 mainly passes through the cylinder 231, and the water flow impacts the impact disc 232 when passing through the cylinder 231, providing thrust to the pressing member 23, and finally the water flow flows through the respective water passing holes 2322 into the insertion through hole 2211. The anti-impact disc 232 has a certain blocking effect on the water flow but does not completely block the passage.

Further, in some embodiments, to ensure that the pressing member 23 can receive a sufficient impact force, as shown in fig. 7, the diameter of the water blocking portion 2321 is not less than half of the inner diameter of the cylinder 231, and the water blocking portion 2321 occupies a relatively large area in the cross section of the cylinder 231.

Further, as shown in fig. 2 and 8 to 10, in some embodiments, the main body seat 20 further includes an elastic member 24, the elastic member 24 acts between the housing 21 and the pressing member 23, and the elastic member 24 provides an elastic force to the pressing member 23 in a direction consistent with an impact force of the water flow striking the water blocking portion 2321.

In actual use, the pressing piece 23 is not only impacted by water flow, but also is elastically stressed, so that the pressing piece 23 can be stably abutted against the ball 222, and the ball 222 is ensured to limit the joint 11 on the main body seat 20. The greater the water pressure, the more reliable the ball 222 limits the joint 11, and the probability of the joint 11 falling off will not increase in equal proportion with the increase in water pressure.

During the installation, as shown in fig. 8, when the joint 11 is just inserted into the insertion through hole 2211 to contact with the balls 222, the balls 222 are still at the innermost position, wherein the innermost position means that the protruding amount of the balls 222 in the insertion through hole 2211 is the largest, the pressing member 23 is moved to the extreme position in the water flow direction, and at this time, the deformation amount of the elastic member 24 is the smallest, which is the smallest elastic force provided by the pressing member 23.

As the insertion depth of the joint 11 increases, as shown in fig. 9, the joint 11 presses the balls 222 outward, and the pressing portions 2311 slide in the opposite direction to the water flow direction during the outward movement of the balls 222, and the deformation amount of the elastic member 24 increases.

When the joint 11 is inserted into place, as shown in fig. 10, the stopper groove 111 on the joint 11 is aligned with the balls 222, and the balls 222 are engaged in the stopper groove 111. When the ball 222 slides to the inner side of the insertion through hole 2211, the elastic member 24 releases energy to push the pressing member 23 along the water flow direction after the pressing member 23 loses the outward pressing force of the ball 222, so that the pressing portion 2311 always keeps abutting with the ball 222.

When the assembly is completed and the pipe 30 is connected, water flows in from the end of the assembly channel 211 far from the joint 11, and the water flows through the water blocking portion 2321 to provide thrust for the water blocking portion 2321, in other words, the pressing member 23 is not only subjected to the elastic force of the elastic member 24, but also subjected to the impact force of the incoming water, so that the pressing member 23 can provide thrust for the balls 222 more reliably, and the balls 222 are reliably matched with the joint 11.

As shown in fig. 8 to 10, the balls 222 mainly serve to limit the joint 11 and the main body seat 20 together, and a sealing member may be further disposed between the joint 11 and the main body seat 20 to ensure that the two are in a sealing contact state. In other words, since the ball 222 ensures reliable connection between the joint 11 and the main body seat 20, the seal therebetween is not displaced or loosened, and the joint 11 is not detached, so that the reliability of the connection seal of the quick connector 10 can be ensured.

The elastic member 24 assembled in place may be in a compressed state or in a stretched state as long as it provides the pressing member 23 with an elastic force in a direction consistent with the direction of the impact force of the water flow. For example, in some embodiments, the elastic member 24 is pressed between the housing 21 and the pressing member 23, where the elastic member 24 is in a compressed state, and the elastic direction provided by the elastic member 24 for the pressing member 23 is consistent with the direction of the impact force of the water flow impacting the water blocking portion 2321.

Further, in some embodiments, as shown in fig. 8 to 10, the end of the elastic member 24 for abutting against the pressing member 23 is located in the cylinder 231 and abuts against the impact-resistant disc 232, so that the engagement between the elastic member 24 and the pressing member 23 is more stable and reliable.

The elastic member 24 may be a compression spring.

Still further, as shown in fig. 8 to 10, in some embodiments, a mounting groove 213 is further provided on a channel wall of the assembly channel 211, and the mounting groove 213 is located upstream of the water blocking portion 2321;

the main body seat 20 further comprises a retainer ring 25 and a supporting member 26, wherein the outer edge of the retainer ring 25 is clamped in the mounting groove 213, the inner edge of the retainer ring 25 protrudes out of the mounting channel 211, the supporting member 26 is annular, the supporting member 26 and the retainer ring 25 are coaxially arranged, and the supporting member 26 is placed on the surface, facing the water blocking part 2321, of the retainer ring 25;

the elastic member 24 includes a compression spring, a direction of expansion of the compression spring is parallel to a conduction direction of the fitting channel 211, one end of the compression spring abuts against the pressing member 23, and the other end of the compression spring abuts against the supporting member 26.

The support 26 is used to provide support for the compression spring so that the compression spring can provide a pushing force for the pressing member 23.

In some embodiments, as shown in fig. 2 and 8 to 10, an annular positioning groove 261 is provided on the end surface of the support member 26 facing the water blocking portion 2321, and an end of the compression spring abutting against the support member 26 is located in the positioning groove 261. So that the compression spring can more stably bear against the support 26.

In some embodiments, as shown in fig. 3 to 5, the positioning base 22 includes a base cylinder 221, the base cylinder 221 is assembled in the assembling channel 211, and a space surrounded by the base cylinder 221 is the insertion through hole 2211. Each of the mounting through holes 2212 penetrates through the base cylinder 221 along the wall thickness direction of the base cylinder 221, the aperture of each of the mounting through holes 2212 gradually decreases in the direction approaching the inner side of the insertion through hole 2211, and the aperture of the opening formed in the inner wall surface of the base cylinder 221 on the mounting through hole 2212 is an inner aperture, and the inner aperture is not larger than the diameter of the ball 222. The ball 222 thus moves into the insertion through hole 2211 with a limit position. The aperture of the opening formed in the outer wall surface of the base cylinder 221 in the mounting hole 2212 is an outer aperture, and the outer aperture is not smaller than the diameter of the ball 222. The base cylinder 221 is provided with a cylinder section of the mounting hole 2212 and the housing 21 with a space therebetween to form the pressing gap 212.

The balls 222 may be placed into the mounting through-holes 2212 from an outer aperture, and the balls 222 may protrude at least partially from an inner aperture into the insertion through-holes 2211. The pressing portion 2311 in the pressing gap 212 presses the ball 222 into the insertion through hole 2211 in use, so that the ball 222 is limitedly fitted with the joint 11.

Further, in some embodiments, as shown in fig. 2 to 6, the main body seat 20 further includes a snap ring 27, an annular clamping groove 2213 is disposed on an outer wall surface of the base cylinder 221, and each of the mounting through holes 2212 is located at a side of the annular clamping groove 2213 away from the water blocking portion 2321. Each of the mounting through holes 2212 is partially overlapped with the annular clamping groove 2213, so that the mounting through holes 2212 are communicated with the annular clamping groove 2213. The snap ring 27 is clamped in the annular clamping groove 2213, and the parts of the snap ring 27 corresponding to the mounting through holes 2212 are extended into the mounting through holes 2212.

The snap ring 27 fitted into the annular snap groove 2213 can restrict the rolling out of the ball 222 from the outer diameter to some extent. During the installation process, before the positioning base 22 is installed in the assembly channel 211, the positioning base 22 cannot position the balls 222 by means of the pressing member 23, and the retainer ring 27 plays a role in positioning the balls 222.

Specifically, in one embodiment, as shown in fig. 6, the cross section of the annular clamping groove 2213 is semicircular, and the cross section of the clamping ring 27 is identical to the cross section of the annular clamping groove 2213. The retainer ring 27 extends from a position where the annular catching groove 2213 partially coincides with the mounting through hole 2212 into the mounting through hole 2212, trapping the balls 222 in the mounting through hole 2212.

Alternatively, the snap ring 27 may have other irregular shapes, for example, the snap ring 27 includes a ring body and a plurality of limiting protrusions disposed on the ring body, the ring body is mounted in the annular clamping groove 2213, the limiting protrusions correspond to the respective mounting through holes 2212, and each limiting protrusion protrudes from a position where the annular clamping groove 2213 partially coincides with the mounting through hole 2212 in the mounting through hole 2212.

Specifically, in some embodiments, as shown in fig. 3-5, the base cylinder 221 is divided into a first cylinder segment 2214 and a second cylinder segment 2215 in its own axial direction. The first cylinder segment 2214 is in threaded fit with the housing 21, the second cylinder segment 2215 and the housing 21 are spaced to form the pressing gap 212, and the second cylinder segment 2215 is located on one side of the first cylinder segment 2214 close to the water blocking portion 2321. The mounting through hole 2212 is formed on the second cylinder segment 2215.

Further, as shown in fig. 3 to 5, and fig. 8 to 10, a boss 223 is disposed at an end of the first barrel segment 2214 away from the second barrel segment 2215, and the boss 223 is located outside the housing 21 and abuts against an end surface of the housing 21. A first sealing ring 224 is provided between the first barrel segment 2214 and the housing 21.

When the base cylinder 221 is mounted, the base cylinder 221 is screwed into the mounting passage until the boss 223 abuts against the end surface of the housing 21, and the first seal ring 224 is pressed and sealed between the first cylinder segment 2214 and the housing 21, so that good sealing performance between the housing 21 and the positioning base 22 is ensured.

In still other embodiments of the present utility model, a quick connector 10 is provided, as shown in fig. 1, 2 and 11, including a connector 11 and a main body seat 20 as described in any of the foregoing, where the connector 11 is inserted into the insertion through hole 2211. As shown in fig. 8 to 10, a second sealing ring 112 is disposed between the joint 11 and the positioning base 22, a circle of limiting groove 111 is disposed at a position on the joint 11 corresponding to the ball 222, the cross section of the limiting groove 111 is arcuate, the ball 222 is clamped in the limiting groove 111, and the joint 11 is reliably limited in the main body seat 20.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (12)

1. A body mount for a quick connector, comprising:

the shell encloses an assembly channel with two open ends;

the positioning base is provided with an inserting through hole for inserting a joint, the hole wall of the inserting through hole is provided with a plurality of mounting through holes, the mounting through holes are arranged at intervals along the circumferential direction of the inserting through hole, at least one of the mounting through holes is provided with a ball, at least part of the ball can protrude into the inserting through hole, the positioning base is assembled in the assembling channel, and a pressing gap exists between the part provided with the mounting through hole on the positioning base and the channel wall of the assembling channel;

the pressing piece is installed in the assembly channel in an axially slidable mode along the assembly channel, the pressing piece comprises a pressing portion and a water blocking portion, the water blocking portion is blocked at the upstream of the insertion through hole, water flowing into the assembly channel can flow into the insertion through hole after impacting the water blocking portion, the pressing portion is located in the pressing gap and abuts against the outer side of the ball, and the greater the depth of the pressing portion inserted into the pressing gap in the water flow direction is, the greater the pushing distance of the ball to the insertion through hole is.

2. The main body holder of the quick coupling according to claim 1, wherein the pressing member comprises a cylinder slidably installed in the fitting passage in an axial direction of the fitting passage, one end of the cylinder is the pressing portion, an inner diameter of the pressing portion is gradually increased in a direction away from the other end of the cylinder, and the water blocking portion is connected to the cylinder.

3. The main body seat of the quick connector according to claim 2, wherein the pressing member further comprises an impact-resistant disc, the impact-resistant disc is located in the cylinder, an outer ring of the impact-resistant disc is connected with the cylinder, a plurality of water through holes are formed in the outer edge of the impact-resistant disc, and the middle portion of the impact-resistant disc is the water blocking portion.

4. A body mount for a quick connector as claimed in claim 3, wherein the diameter of the water stop is no less than half the inner diameter of the barrel.

5. A body mount for a quick connector according to claim 3, further comprising an elastic member acting between the housing and the pressing member, the elastic member providing the pressing member with an elastic force in a direction consistent with an impact force of a water flow against the water retaining portion.

6. The main body seat of the quick connector according to claim 5, wherein a mounting groove is further formed in a channel wall of the assembly channel, and the mounting groove is located upstream of the water blocking portion;

the main body seat further comprises a retainer ring and a bearing piece, the outer edge of the retainer ring is clamped in the mounting groove, the inner edge of the retainer ring protrudes out of the mounting channel, the bearing piece is annular, the bearing piece and the retainer ring are coaxially arranged, and the bearing piece is placed on the surface, facing the water retaining part, of the retainer ring;

the elastic piece comprises a compression spring, the expansion direction of the compression spring is parallel to the conduction direction of the assembly channel, one end of the compression spring is abutted to the pressing piece, and the other end of the compression spring is abutted to the supporting piece.

7. The main body seat of the quick connector according to claim 6, wherein an annular positioning groove is formed in the end face, facing the water blocking portion, of the bearing member, and one end, abutting against the bearing member, of the compression spring is located in the positioning groove;

and/or one end of the compression spring, which is abutted with the pressing piece, is positioned in the cylinder and is abutted with the impact-resistant disc.

8. The main body holder of a quick coupling according to any one of claims 1 to 7, wherein the positioning base includes a base cylinder fitted in the fitting passage, the space surrounded by the base cylinder is the insertion through hole, each of the mounting through holes penetrates the base cylinder in a wall thickness direction of the base cylinder, a hole diameter of each of the mounting through holes is gradually reduced in a direction approaching an inner side of the insertion through hole, and a hole diameter of an opening formed in an inner wall surface of the base cylinder in the mounting through hole is an inner hole diameter which is not larger than a diameter of the ball, a hole diameter of an opening formed in an outer wall surface of the base cylinder in the mounting through hole is an outer hole diameter which is not smaller than a diameter of the ball, and a gap between a cylinder section provided with the mounting through hole in the base cylinder and the housing forms the pressing gap.

9. The main body seat of the quick connector according to claim 8, further comprising a snap ring, wherein an annular clamping groove is formed in the outer wall surface of the base barrel, each mounting through hole is located on one side, away from the water retaining portion, of the annular clamping groove, each mounting through hole is partially overlapped with the annular clamping groove, the snap ring is clamped in the annular clamping groove, and a portion, corresponding to each mounting through hole, of the snap ring extends into the mounting through hole.

10. The body mount of a quick connector according to claim 9, wherein the cross-section of the annular clamping groove is semi-circular, and the cross-sectional shape of the snap ring is identical to the cross-sectional shape of the annular clamping groove.

11. The main body seat of the quick connector according to claim 8, wherein the base barrel is divided into a first barrel section and a second barrel section in the axial direction of the base barrel, the first barrel section is in threaded fit with the shell, the second barrel section and the shell are spaced to form the pressing gap, the second barrel section is positioned on one side of the first barrel section, which is close to the water retaining part, the mounting through hole is formed in the second barrel section, a boss is arranged at one end, which is far away from the second barrel section, of the first barrel section, the boss is positioned outside the shell and is in butt joint with the end face of the shell, and a first sealing ring is arranged between the first barrel section and the shell.

12. The quick connector is characterized by comprising a connector and the main body seat according to any one of claims 1 to 11, wherein the connector is inserted into the insertion through hole, a second sealing ring is arranged between the connector and the positioning base, a circle of limiting groove is formed in the connector at a position corresponding to the ball, the section of the limiting groove is arc-shaped, and the ball is clamped in the limiting groove.