A liquid connector

Abstract

The utility model discloses a liquid connector belongs to the technical field of connector, solve the problem that drive steel ball and locking steel ball exist size approximate and appear steel ball misloading, the technical scheme of solving this problem mainly includes socket and plug, the socket includes socket casing and sliding sleeve, is equipped with pusher on the socket casing, and the plug includes plug casing, and the plug casing has the splicing end, and the splicing end has the drive ring, and the pusher pushes the sliding sleeve axial movement under the drive of drive ring, and the socket casing is equipped with the limiting part between sliding sleeve, and the limiting part can move along the radial direction of socket casing, and under the locking state of splicing end, the radial movement of limiting part is limited by sliding sleeve and locks the plug casing, the pusher includes push steel ball, and the limiting part includes limiting steel ball, and the push steel ball and limiting steel ball are same in size. The utility model mainly sets up the size of steel ball to be same, avoids appearing steel ball misloading and influences the normal production and use of locking structure.

Description

Technical Field

[0001] This utility model relates to the technical field of connectors, and in particular to a liquid connector. Background Technology

[0002] As an important component of liquid cooling systems, liquid connectors primarily function to enable rapid connection and disconnection of three-dimensional channels such as pipelines and cold plates, facilitating equipment debugging and maintenance, especially in situations where equipment requires multiple disassembly and assembly and multiple debugging.

[0003] Prior art CN201310239620.6 discloses a hydraulic coupling element comprising a base defining a central axis for assembling complementary hydraulic coupling elements, a locking ring, and locking balls capable of locking the complementary hydraulic coupling elements relative to the base. The locking balls are radially movable within the base between an unlocked position and a locked position of the complementary hydraulic coupling elements. The element includes drive balls for the locking ring, adapted to be pushed by the complementary hydraulic coupling elements into an elongated housing within the base to axially move the locking ring at least from a locked position to a released position, wherein in the locked position, the locking balls are locked in the locked position, and in the released position, the locking balls are locked in the locked position, and means for returning the locking ring to the locked position. The diameter of the drive balls is larger than the diameter of the locking balls.

[0004] The prior art description also provides a detailed description of the dimensions of the driving ball and the locking ball. The diameter D of the driving element or each driving element is between 105% and 125% of the diameter of the locking element or each locking element. Furthermore, the prior art further specifies that the diameter of the corresponding locking ball is 7mm, and the diameter of the corresponding driving ball is between 7.5mm and 8.5mm. In other words, the difference in diameter between the driving ball and the locking ball is only between 1mm and 1.5mm. The dimensions of the locking ball and the driving ball are similar, making it difficult to quickly distinguish them with the naked eye. Balls with similar dimensions are prone to mis-installation.

[0005] To avoid misinstallation of steel balls, the existing technology CN212430113U uses a method where the front and rear rows of steel balls have the same diameter. However, because the mounting holes for the rear rows of steel balls are straight holes, and these straight holes are round holes with diameters matching the diameters of the rear rows of steel balls, when the plug is inserted into the socket, the rear rows of steel balls cannot move axially relative to the straight holes along the socket. In other words, there is no guide stroke for the rear rows of steel balls. When the plug held by the worker is misaligned with the socket due to axial deviation, it cannot be corrected due to the lack of guide stroke, which can easily cause the rear rows of steel balls to jam, affecting the docking efficiency between the plug and the socket. Utility Model Content

[0006] The purpose of this invention is to provide a liquid connector that solves the problem of the rear steel ball getting stuck due to the lack of guiding stroke in the straight hole. By providing guidance through the axial movement of the limiting steel ball, the problem of the limiting steel ball getting stuck is effectively avoided, thus improving the docking efficiency of the plug and socket.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a liquid connector, comprising a socket and a plug, wherein the socket includes a socket housing and a sliding sleeve sleeved on the socket housing and axially movable relative to the socket housing, the socket housing is provided with a pushing steel ball that can push the sliding sleeve axially, the plug includes a plug housing, the rear end of the plug housing being a plug-in end that inserts into the front end of the socket housing, the plug-in end having a driving ring, the pushing steel ball pushing the sliding sleeve axially under the drive of the driving ring, and the socket housing being provided with a limiting steel ball that can move radially along the socket housing. The sliding sleeve restricts the radial outward movement of the limiting steel ball. The pushing steel ball and the limiting steel ball are the same size. The socket housing is provided with a first mounting hole for axial movement of the pushing steel ball and a second mounting hole for axial movement of the limiting steel ball. The first mounting hole and the second mounting hole are axially misaligned. The drive ring has a first stroke and a second stroke during the insertion process. During the first stroke, the pushing steel ball is driven to move the sliding sleeve axially to release the radial restriction on the limiting steel ball. During the second stroke, the limiting steel ball is driven to the front side of the drive ring. The limiting steel ball keeps the plug housing and the socket housing locked under the restriction of the sliding sleeve.

[0008] After adopting the above technical solution, this utility model has the following advantages: The sliding sleeve is axially movable relative to the socket housing, which facilitates the axial movement of the sliding sleeve to allow the movement of the pushing steel ball, ensuring that the plug end of the plug housing can be inserted into the socket housing. By setting a drive ring at the plug end of the plug housing, the driving ring can drive the pushing steel ball to drive the sliding sleeve during the insertion process, improving the convenience of plug and socket insertion and locking. A limiting steel ball is set on the socket housing to lock the plug housing, ensuring a locked state between the plug and socket. The stability under the specified state is as follows: The plug-in end extends into the socket housing, and the drive ring drives the pushing steel ball and the limiting steel ball. When the limiting steel ball abuts against the socket housing, it moves radially along the socket housing, while the plug-in end continues to be inserted. When the limiting steel ball moves to the end of the drive ring away from the socket housing, the sliding sleeve moves towards the plug housing. The sliding sleeve again restricts the radial movement of the limiting steel ball, and the limiting steel ball is confined to the side of the drive ring away from the socket housing, ensuring that the limiting steel ball can stably lock the plug housing. This is consistent with existing technology CN201310239620.6. In comparison, setting the dimensions of the pushing steel ball and the limiting steel ball to be the same eliminates the need for installers to distinguish between the pushing and locking steel balls when assembling the locking structure, thus avoiding incorrect installation. The pushing steel ball can move axially in the first mounting hole, and the limiting steel ball can move axially in the second mounting hole. This allows the drive ring to drive the pushing steel ball to move axially along the sliding sleeve during the first stroke of the insertion process, ensuring that the sliding sleeve can release the radial restriction on the limiting steel ball. During the second stroke of the drive ring, it can drive the limiting steel ball to move radially and to the front side of the drive ring. When the limiting steel ball... When the steel ball is behind the drive ring, the sliding sleeve restricts the limiting steel ball again, so that the plug housing and the socket housing can remain locked, improving the stability of the plug and socket after docking. Compared with the prior art CN212430113U, the axial movement of the limiting steel ball in the second mounting hole allows the limiting steel ball to have an axial movement guide stroke when the plug is inserted into the socket to correct for axial deviation between the plug and the socket, effectively avoiding misalignment between the plug and the socket, and thus effectively preventing the plug or the limiting steel ball from getting stuck, improving the docking efficiency of the plug and the socket.

[0009] Furthermore, the front end of the first mounting hole is located in front of the front end of the second mounting hole.

[0010] By adopting the aforementioned technical solution, the front end of the first mounting hole is set in front of the front end of the second mounting hole, ensuring that when the plug-in end is plugged into the socket housing, the drive ring first drives and pushes the steel ball, thereby ensuring that the sliding sleeve can move axially and release the radial restriction on the limiting steel ball.

[0011] Furthermore, the wall of the first mounting hole includes a first limiting part and a second limiting part, which pushes the steel ball to move axially between the first limiting part and the second limiting part. Both the first limiting part and the second limiting part are perpendicular to the axial direction of the socket housing.

[0012] By adopting the aforementioned technical solution, the first limiting part and the second limiting part on the hole wall of the first mounting hole are set to be perpendicular to the axial direction of the socket housing, thereby reducing the processing difficulty of the first mounting hole, reducing the processing difficulty of the socket housing, and thus improving the production efficiency of the socket housing.

[0013] Furthermore, the outer periphery of the drive ring has a first drive inclined surface, an outer ring surface, and a first conical surface distributed sequentially from back to front. The first drive inclined surface drives the pushing steel ball and the limiting steel ball in sequence. The first conical surface forms a limiting groove with the outer peripheral wall of the plug housing. When the limiting steel ball moves axially to abut against the hole wall of the first mounting hole, it moves radially along the socket housing and passes through the outer ring surface before entering the limiting groove to lock the plug housing.

[0014] Using the aforementioned technical solution, when the drive ring drives the pushing steel ball and the limiting steel ball, it abuts against the pushing steel ball and the limiting steel ball through the first drive inclined surface. This not only drives the pushing steel ball and the limiting steel ball, but also ensures that the pushing steel ball and the limiting steel ball can move radially relative to the socket housing along the first drive inclined surface when the limiting steel ball abuts against the other hole wall of the second mounting hole. It also ensures that the limiting steel ball can move radially and move to the side of the drive ring away from the socket housing as the plug end is plugged in. The limiting steel ball is accommodated by the limiting groove, which improves the stability of the limiting steel ball in the plug housing and improves the stability of the limiting steel ball locking the plug housing.

[0015] Furthermore, the inner wall of the sliding sleeve has a second driving inclined surface and a limiting surface distributed from front to back, which pushes the steel ball to keep in contact with the second driving inclined surface, and the limiting surface blocks the limiting steel ball in the radial direction of the socket housing.

[0016] By adopting the aforementioned technical solution, the second driving inclined surface on the inner wall of the sliding sleeve maintains contact with the pushing steel ball, ensuring that when the driving ring drives the pushing steel ball, the pushing steel ball drives the second driving inclined surface, thereby driving the sliding sleeve to move axially and improving the stability of the axial movement of the sliding sleeve; the limiting surface blocks the limiting steel ball in the radial direction of the socket housing, improving the stability of the limiting steel ball locking the plug housing on the side of the driving ring away from the socket housing, thereby improving the locking effect of the plug and socket.

[0017] Furthermore, the socket housing has a tail sleeve at its rear end, a first limiting structure on the socket housing, a second limiting structure on the tail sleeve, and a sliding sleeve that moves axially between the first and second limiting structures. A first elastic element that biases the sliding sleeve towards the pushing steel ball is provided between the sliding sleeve and the tail sleeve.

[0018] By adopting the aforementioned technical solution, a first limiting structure is provided on the socket housing and a second limiting structure is provided on the tail sleeve, so that the sliding sleeve can move axially between the first limiting structure and the second limiting structure, thereby preventing the sliding sleeve from detaching from the socket housing. A first elastic element is provided between the sliding sleeve and the tail sleeve. The first elastic element biases the pushing steel ball, ensuring that the sliding sleeve has a tendency to slide towards the pushing steel ball. During the insertion process of the plug end, under the action of the first elastic element, it is ensured that after the limiting steel ball enters the limiting groove, the limiting surface of the sliding sleeve can restrict the radial movement of the limiting steel ball, ensuring that the limiting steel ball can lock the plug housing relatively stably.

[0019] Furthermore, the socket also includes a valve core ring and a valve stem. The inner peripheral wall of the socket housing at the end away from the tail sleeve has a third limiting structure. The valve core ring is sealed to the end of the socket housing away from the tail sleeve. One end of the valve stem abuts against the tail sleeve, and the other end is sealed to the valve core ring. A second elastic element is provided between the valve stem and the valve core ring to bias the valve core ring, causing the valve core ring to abut against the third limiting structure.

[0020] By adopting the aforementioned technical solution, a valve core ring and a valve stem are provided in the socket. The valve core ring is sealed to the socket housing, and the valve stem is sealed to the valve core ring, thereby improving the sealing effect of the socket. The second elastic element pushes the steel ball to bias the valve core ring, ensuring that the valve core ring can abut against the third limiting structure, improving the stability of the valve core ring, ensuring the sealing effect between the valve core ring and the inner wall of the socket housing, as well as the sealing effect between the valve core ring and the valve stem, thereby improving the sealing effect of the socket. In addition, the biasing of the second elastic element causes the valve core ring to abut against the plug end, thereby facilitating the subsequent unlocking of the plug from the socket.

[0021] Furthermore, the valve core ring has a first through hole, the valve stem has an abutment plate that abuts against the tail sleeve, and the abutment plate is provided with a second through hole. When the plug and socket are in the locked state, the first through hole and the second through hole are connected to form a fluid channel.

[0022] Using the aforementioned technical solution, an abutment plate is provided at the tail end of the valve stem, which abuts against the tail sleeve to prevent the valve stem from deflecting; after the valve core ring is abutted by the plug end, it is no longer sealed to the valve stem, so that the first through hole and the second through hole are connected, ensuring that the liquid in the plug housing can flow through the fluid channel formed by the connection of the first through hole and the second through hole.

[0023] Furthermore, the plug also includes a valve core, and the inner wall of the plug end has a fourth limiting structure that makes the inner diameter of the plug end smaller than the inner diameter of the plug housing. A third elastic element is provided between the valve core and the plug housing to bias the valve core towards the pushing steel ball so that the valve core is sealed to the inner wall of the fourth limiting structure.

[0024] By adopting the aforementioned technical solution, a fourth limiting structure is set on the inner wall of the plug end, thereby reducing the inner diameter of the end cavity of the plug end. This ensures that after the valve stem abuts the valve core, the cavity inside the plug housing can communicate with the first and second through holes to form a fluid flow channel. It also ensures that the plug can be sealed and connected with the valve core when it is not abutted and disengaged, thus guaranteeing the sealing effect when the plug is not connected.

[0025] Furthermore, after entering the socket housing, it is sealed to the inner wall of the third limiting structure, and when the valve stem enters the plug end and contacts the fourth limiting structure, it is sealed to the inner wall of the fourth limiting structure.

[0026] By adopting the aforementioned technical solution, the sealing effect between the plug end and the inner wall of the third limiting structure, and the sealing connection between the valve stem and the inner wall of the fourth limiting structure, is improved, effectively preventing the possibility of liquid overflowing between the plug end and the inner wall of the socket housing, and effectively preventing the possibility of liquid overflowing between the valve stem and the inner wall of the plug end, thus improving the sealing effect after the plug and socket are plugged in. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the socket structure in this utility model;

[0029] Figure 2 This is a schematic diagram of the plug structure in this utility model;

[0030] Figure 3 This is a schematic diagram of the limiting step in this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the sliding sleeve in this utility model;

[0032] Figure 5 In this utility model Figure 1 Enlarged view of point A in the middle;

[0033] Figure 6 This is a schematic diagram of the valve core ring and valve stem in this utility model;

[0034] Figure 7-1 This is a schematic diagram showing the valve core ring abutting against the plug end in this utility model;

[0035] Figure 7-2 This is a schematic diagram showing the first driving inclined surface abutting against the pushing steel ball in this utility model;

[0036] Figure 8-1 This is a schematic diagram showing the axial movement of the limiting steel ball in this utility model;

[0037] Figure 8-2This is a schematic diagram showing the radial movement of the limiting steel ball in this utility model;

[0038] Figure 9-1 This is a schematic diagram showing the contact between the limiting steel ball and the outer ring surface in this utility model;

[0039] Figure 9-2 This is a schematic diagram showing the limiting steel ball located in the limiting groove in this utility model;

[0040] Figure 10-1 This is a schematic diagram illustrating the radial restriction of the limiting steel ball by the sliding sleeve unlocking mechanism in this utility model.

[0041] Figure 10-2 This is a schematic diagram showing how the socket releases the axial restriction on the plug in this utility model. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0043] The terms "first," "second," etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or sequence. Even if "second" is used before a technical feature for distinction, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, and Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Containing X, Y, and Z," "Containing X, Y, and Z" means that all three X, Y, and Z are included; "Containing X, Y, or Z" means that one of X, Y, and Z is included; "Containing X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are included.

[0044] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0045] like Figures 1 to 6 As shown, this utility model provides a liquid connector, including a socket 1 and a plug 2, as follows: Figure 1As shown, the socket 1 includes a socket housing 11 and a sliding sleeve 12 sleeved on the socket housing 11 and axially movable relative to the socket housing 11. The socket housing 11 is provided with a pushing steel ball 13 that can push the sliding sleeve 12 axially. Figure 2 As shown, the plug 2 includes a plug housing 21, the rear end of which is a plug-in end 211 that plugs into the front end of the socket housing 11. The plug-in end 211 has a drive ring 212 located at the front end of the plug-in end 211. The drive ring 212, driven by the drive ring 212, pushes the steel ball 13 to move the sliding sleeve 12 axially. Figure 1 As shown, a limiting steel ball 14 is provided on the socket housing 11. The limiting steel ball 14 can move radially along the socket housing 11, and the sliding sleeve 12 restricts the radial movement of the limiting steel ball 14. Specifically, in this embodiment, the pushing steel ball 13 and the limiting steel ball 14 are the same size. Specifically, by setting the size of the pushing steel ball 13 and the limiting steel ball 14 to be the same, compared with the prior art CN201310239620.6, it is not necessary to distinguish between the pushing steel ball 13 and the limiting steel ball 14 when assembling the socket 1, thereby avoiding the situation of incorrect assembly of the pushing steel ball 13 and the limiting steel ball 14 during the assembly process. Moreover, it is not necessary to distinguish between the pushing steel ball 13 and the limiting steel ball 14, which can also improve the assembly efficiency of the socket 1 and improve the overall production efficiency of the socket 1.

[0046] In this embodiment, to facilitate the axial movement of the steel ball 13 and the limiting steel ball 14, as follows: Figure 1 As shown, the socket housing 11 is provided with a first mounting hole 111 and a second mounting hole 112. Specifically, the first mounting hole 111 and the second mounting hole 112 are located at the front end of the socket housing 11. The first mounting hole 111 and the second mounting hole 112 are alternately distributed along the circumference of the socket housing 11, and there are multiple of each. The first mounting hole 111 and the second mounting hole 112 are offset in the axial direction of the socket housing 11, and both the first mounting hole 111 and the second mounting hole 112 extend along the axial direction of the socket housing 11. Specifically, the pushing steel ball 13 is located in the first mounting hole 111 and can move along the axial direction of the socket housing 11 within the first mounting hole 111. The limiting steel ball 14 is located in the second mounting hole 112 and can move axially along the socket housing 11 within the second mounting hole 112. The drive ring 212 has a first stroke and a second stroke during insertion. During the first stroke, it drives the pushing steel ball 13 to move the sliding sleeve 12 axially, releasing the radial restriction on the limiting steel ball 14. During the second stroke, it drives the limiting steel ball 14 to the front side of the drive ring 212. The limiting steel ball 14 maintains the locking of the plug housing 21 and the socket housing 11 under the radial restriction of the sliding sleeve 12. Specifically, from front to back is the mating direction of the plug 2 and the socket 1, and from back to front is the disengagement direction of the plug 2 and the socket 1. The insertion situation is as follows: Figures 1 to 7-1 and Figure 7-2As shown, after the plug-in end 211 is inserted into the socket housing 11, with the continuous insertion of the plug-in end 211, the drive ring 212 drives the steel ball 13 and the limiting steel ball 14 to move axially in the first mounting hole 111 and the second mounting hole 112, respectively. More specifically, the axial length of the first mounting hole 111 is greater than the axial length of the second mounting hole 112, and the front end of the first mounting hole 111 is located in front of the front end of the second mounting hole 112. When the first mounting hole 111 is closer to the front end face of the socket housing 11, the drive ring 212 first drives the steel ball 13 to move axially, ensuring that the sliding sleeve 12 moves axially and unlocking the restriction on the radial movement of the limiting steel ball 14. Figures 8-1 to 9-2 As shown, this ensures that the limiting steel ball 14 can move radially and pass over the drive ring 212 to the front side of the drive ring 212 under the continuous insertion of the plug end 211; and when the pushing steel ball 13 abuts against the hole wall of the first mounting hole 111, the pushing steel ball 13 also passes over the drive ring 212 to the rear side of the drive ring 212, the pushing steel ball 13 no longer abuts against the sliding sleeve 12, the sliding sleeve 12 moves axially to reset, and limits the radial movement of the limiting steel ball 14 again in the radial direction of the socket housing 11, ensuring that the limiting steel ball 14 locks the plug housing 21.

[0047] When setting the first mounting hole 111 and the second mounting hole 112, as follows: Figure 3 As shown, the wall of the first mounting hole 111 includes a first limiting part and a second limiting part. The steel ball 13 is pushed to move axially between the first limiting part and the second limiting part. The first limiting part and the second limiting part are both perpendicular to the axial direction of the socket housing 11. The vertical arrangement facilitates the processing of the first mounting hole 111 and the second mounting hole 112, reduces the processing difficulty of the socket housing 11, and thus improves the production efficiency of the socket housing 11.

[0048] More specifically, such as Figure 2 and Figure 3 As shown, the first mounting hole 111 and the second mounting hole 112 are provided with limiting steps 1111. The pushing steel ball 13 and the limiting steel ball 14 abut against the limiting steps 1111 in the radial direction of the socket housing 11, so that a portion of the pushing steel ball 13 and the limiting steel ball 14 are located in the cavity of the socket housing 11 and in contact with the drive ring 212, and neither the pushing steel ball 13 nor the limiting steel ball 14 will completely enter the cavity of the socket housing 11, thereby improving the stability of the pushing steel ball 13 and the limiting steel ball 14 on the socket housing 11.

[0049] In another embodiment, such as Figure 1 and Figure 2 As shown, to ensure that the limiting steel ball 14 can move radially past the drive ring 212 to the rear side of the drive ring 212, the outer peripheral wall of the drive ring 212 has a first driving inclined surface 2121, an outer ring surface 2122, and a first conical surface 2123 distributed sequentially from back to front, as follows: Figure 7-1 , Figure 7-2 and Figure 8-1 As shown, after the plug-in end 211 is inserted into the socket housing 11, the first driving inclined surface 2121 first drives the pushing steel ball 13, causing the pushing steel ball 13 to push the sliding sleeve 12 to move axially, and then drives the limiting steel ball 14, causing the limiting steel ball 14 to move axially and abut against the rear hole wall of the second mounting hole 112 before moving radially; specifically, in the initial state, the pushing steel ball 13 is located at one end of the first mounting hole 111 near the front end face of the socket housing 11 under the action of the sliding sleeve 12. When the plug-in end 211 is inserted into the socket housing 11, it is ensured that the driving ring 212 first drives the pushing steel ball 13 to move axially and then abuts against the rear hole wall of the second mounting hole 112 before moving radially. The moving steel ball 13 then abuts against the limiting steel ball 14, ensuring that the sliding sleeve 12 releases the restriction on the radial movement of the limiting steel ball 14 in the socket housing 11. This allows the limiting steel ball 14 to move radially along the first driving inclined surface 2121 under continuous contact with the first driving inclined surface 2121. After passing the outer ring surface 2122, the limiting steel ball 14 abuts against the first conical surface 2123, thereby axially locking the plug housing 21. This pushes the steel ball 13 to also move along the first driving inclined surface 2121 and past the outer ring surface 2122 to the first conical surface 2123. Figure 2 As shown, the first conical surface 2123 forms a limiting groove 2124 with the outer peripheral wall of the plug housing 21. When the limiting steel ball 14 moves axially to abut against the wall of the first mounting hole 111, it moves radially along the socket housing 11 and passes over the outer ring surface 2122 before entering the limiting groove 2124 to lock the plug housing 21; specifically, as shown... Figure 2 and Figure 9-2 As shown, when the limiting steel ball 14 and the pushing steel ball 13 cross the outer ring surface 2122 and reach the first conical surface 2123, both the limiting steel ball 14 and the pushing steel ball 13 enter the limiting groove 2124. The pushing steel ball 13 moves forward and no longer pushes the sliding sleeve 12 backward, so that the sliding sleeve 12 moves towards the plug housing 21 and locks the limiting steel ball 14 again in the radial direction of the socket housing 11, thereby improving the stability of the plug housing 21 after it is plugged in.

[0050] To ensure that the limiting ball 14 can move radially in the socket housing 11, such as Figure 1 and Figure 4 As shown, the inner wall of the sliding sleeve 12 has a second driving inclined surface 121 and a limiting surface 122. The pushing steel ball 13 maintains contact with the second driving inclined surface 121, and the limiting surface 122 blocks and limits the steel ball 14 in the radial direction of the socket housing 11. Specifically, when the plug-in end 211 is not plugged in, as shown... Figure 1As shown, the pushing steel ball 13, under the abutment of the second driving inclined surface 121, is located at the hole wall of the first mounting hole 111 closest to the front end face of the socket housing 11, ensuring that after the plug-in end 211 is inserted, the driving ring 212 first abuts against the pushing steel ball 13. After the pushing steel ball 13 and the limiting steel ball 14 abut against the hole walls of the first mounting hole 111 and the second mounting hole 112 respectively, the limiting surface 122 no longer restricts the radial movement of the limiting steel ball 14, as shown. Figure 8-1 and Figure 8-2 As shown, the first driving inclined surface 2121 and the second driving inclined surface 121 are radially distributed along the socket housing 11, forming a channel for the radial movement of the limiting steel ball 14. This ensures that the limiting steel ball 14 can move along the second driving inclined surface 121 to the outer ring surface 2122. The limiting steel ball 14 and the pushing steel ball 13 can slide along the first driving inclined surface 2121 as the insertion end 211 is continuously inserted. Figure 9-1 and Figure 9-2 As shown, this ensures that the limiting steel ball 14 can cross the outer ring surface 2122 and enter the limiting groove 2124 to lock the plug housing 21. In this embodiment, as... Figure 9-1 As shown, the inner wall of the front end of the sliding sleeve 12 also has an unlocking surface 123. The unlocking surface 123 is connected to the front end of the second driving inclined surface 121. After the limiting steel ball 14 and the pushing steel ball 13 move radially along the first driving inclined surface 2121, the unlocking surface 123 makes way to ensure that both the pushing steel ball 13 and the limiting steel ball 14 can pass over the driving ring 212. At the same time, the unlocking surface 123 can also block the pushing steel ball 13 and the limiting steel ball 14 radially to prevent them from dislodging from the first mounting hole 111 and the second mounting hole 112, thereby improving the stability of the pushing steel ball 13 and the limiting steel ball 14.

[0051] In another embodiment, such as Figure 1 and Figure 5 As shown, the socket housing 11 has a tail sleeve 15 at its rear end, a first limiting structure 116 on the socket housing 11, and a second limiting structure 151 on the tail sleeve 15. Specifically, the tail sleeve 15 and the pushing steel ball 13 are located at both ends of the socket housing 11, the first limiting structure 116 is located at the front end of the socket housing 11, the sliding sleeve 12 has a first blocking structure 124 that abuts against the first limiting structure 116 in the axial direction, the second limiting structure 151 is located at the front end of the tail sleeve 15, and the rear end face of the sliding sleeve 12 abuts against the second limiting structure 151. The sliding sleeve 12 moves axially between the first limiting structure 116 and the second limiting structure 151. The axial movement of the sliding sleeve 12 is limited by the first limiting structure 116 and the second limiting structure 151 to prevent the sliding sleeve 12 from coming off from both ends of the socket housing 11 and affecting the insertion connection between the socket 1 and the plug 2.

[0052] To ensure that the sliding sleeve 12 can radially restrict the movement of the limiting steel ball 14 and lock the plug housing 21, such as Figure 5As shown, a first elastic element 152 is provided between the sliding sleeve 12 and the tail sleeve 15 to bias the sliding sleeve 12 against the pushing steel ball 13. Specifically, a receiving cavity 153 is formed between the inner wall of the rear end of the sliding sleeve 12 and the outer peripheral wall of the socket housing 11. The inner peripheral wall of the sliding sleeve 12 is provided with an abutment portion 125. The first elastic element 152 is disposed in the receiving cavity 153. One end of the first elastic element 152 abuts against the abutment portion 125, and the other end abuts against the front end face of the tail sleeve 15. The first elastic element 152 is in a compressed state. When the insertion end 211 is inserted, the pushing steel ball 13 pushes the sliding sleeve 12 to move backward, so that the abutment portion 125 presses against the first elastic element 152. Figure 9-1 and Figure 9-2 As shown, when the steel ball 13 and the limiting steel ball 14 are pushed away from the first driving inclined surface 2122 and enter the limiting groove 2124, the sliding sleeve 12 is reset under the bias of the first elastic element 152, so that the limiting surface 122 restricts the movement of the limiting steel ball 14 in the radial direction of the socket housing 11 again, improving the stability of the sliding sleeve 12's reset in restricting the radial direction of the limiting steel ball 14, thereby improving the stability of the plug housing 21 after it is locked.

[0053] In another embodiment, such as Figure 6As shown, the socket 1 also includes a valve core ring 16 and a valve stem 17. The inner peripheral wall of the socket housing 11 at the end away from the tail sleeve 15 has a third limiting structure 117. The valve core ring 16 is sealed to the end of the socket housing 11 away from the tail sleeve 15. Specifically, the socket housing 11 has a first chamber 113 at the front end, a second chamber 114 at the rear end, and a third chamber 115 at the third limiting structure 117. The valve core ring 16 is located in the third chamber 115. The valve core ring 16 includes a first ring portion 161, a second ring portion 162, and a first conical portion 163 connecting the first ring portion 161 and the second ring portion 162. The rear end of the third limiting structure 117 is a second conical surface 1171 adapted to the outer peripheral wall of the first conical portion 163. The first ring portion 161... The outer diameter of the first ring 161 is basically the same as the inner diameter of the third chamber 115. The outer diameter of the second ring 162 is basically the same as the inner diameter of the second chamber 114. The first ring 161 and the inner wall of the third chamber 115 are sealed together by the first sealing element. One end of the valve stem 17 abuts against the tail sleeve 15, and the other end is sealed together with the inner circumferential wall of the first ring 161. Specifically, the valve stem 17 includes a head 171, a stem 172, and a second tapered part 173 connecting the head 171 and the stem 172. The diameter of the stem 172 is smaller than the diameter of the head 171. The arrangement of the stem 172 and the second tapered part 173 ensures that after the plug 2 is inserted, the outer circumferential walls of the second tapered part 173 and the stem 172 do not contact the inner wall of the insertion end 211 to form a channel for liquid flow. The outer diameter of the head 171 is basically the same as the inner diameter of the first ring 161. The first ring 161 is sealed to the third chamber 115 by the first sealing element, and the head 171 is sealed to the first ring 161 by the second sealing element, thereby improving the sealing effect between the first chamber 113 and the second chamber 114.

[0054] To ensure that the valve core ring 16 abuts against the third limiting structure 117 to seal the first chamber 113 and the second chamber 114, such as Figure 6 As shown, a second elastic element 18 is provided between the valve stem 17 and the valve core ring 16 to bias the valve core ring 16 so that the valve core ring 16 abuts against the third limiting structure 117. Specifically, the second elastic element 18 is located in the second chamber 114. One end of the second elastic element 18 abuts against the valve stem 17 and the other end abuts against the rear end face of the valve core ring 16, so that the valve core ring 16 abuts against the third limiting structure 117, thereby improving the sealing effect between the first ring portion 161 and the inner wall of the third chamber 115, and the head 171 maintains a sealed connection with the inner peripheral wall of the first ring portion 161, thereby improving the sealing effect of the socket 1 itself.

[0055] To ensure that a fluid channel can be formed after plug 2 is inserted, such as Figure 6As shown, the valve core ring 16 has a first through hole 164, and the valve stem 17 has an abutment plate 174 that abuts against the tail sleeve 15. The abutment plate 174 is located at the rear end of the stem portion 172. The abutment plate 174 is provided with a second through hole 175. When the plug 2 and the socket 1 are in the locked state, the first through hole 164 and the second through hole 175 are connected through the second chamber 114 to form a fluid channel, ensuring that after the plug 2 and the socket 1 are plugged in, the liquid can flow from the plug 2 to the socket 1 and flow out from the second through hole 175.

[0056] In another embodiment, such as Figure 2 As shown, the plug 2 also includes a valve core 22. The plug housing 21 has a fourth chamber 213. The inner wall of the plug end 211 has a fourth limiting structure. The fourth limiting structure is located at the rear end of the plug end 211, and the inner wall of the fourth limiting structure forms a fifth chamber. The valve core 22 includes a third ring portion 221, a fourth ring portion 222, and a third conical portion 223 connecting the third ring portion 221 and the fourth ring portion 222. The third ring portion 221 is located in the fourth chamber 213, and the fourth ring portion 222 is located in the fifth chamber. The outer surface of the fourth ring portion 222... The diameter of the fourth ring 222 is basically the same as the inner diameter of the fifth chamber. The fourth ring 222 and the inner wall of the fifth chamber are sealed together by a third sealing element. The fourth chamber 213 is provided with a rearward biased valve core 22 so that the valve core 22 abuts against the third elastic element 23 of the fourth limiting structure. Specifically, the front inner wall of the fourth chamber 213 has a second blocking part 214. One end of the third elastic element 23 abuts against the second blocking part 214 and the other end abuts against the front end face of the valve core 22, ensuring the sealing effect between the fourth ring 222 and the fifth chamber. Figure 9-2 As shown, when the plug 2 is inserted into the socket 1 and locked by the limiting steel ball 14, the head 171 of the valve stem 17 enters the fourth chamber 213, making the fourth chamber 213 connected to the first through hole 164, the second chamber 114, and the second through hole 175, ensuring that liquid can flow from the plug 2 to the socket 1 and out of the second through hole 175. The third elastic element 23 ensures that after the plug 2 is unlocked from the socket 1, the valve core 22 can move to the fifth chamber and seal the fifth chamber with the third sealing element, thereby preventing liquid from flowing out from the rear end face of the plug end 211.

[0057] To ensure a tight seal after the plug 2 and socket 1 are connected, the plug end 211 enters the socket housing 11 and seals against the inner wall of the third limiting structure 117. Similarly, the valve stem 17 enters the plug end 211 and seals against the inner wall of the fourth limiting structure. Specifically, the outer diameter of the plug end 211 is approximately equal to the outer diameter of the end of the valve core ring 16 facing the pushing steel ball 13. More specifically, the first sealing element is located on the socket housing 11 and on the third limiting structure 117, while the second sealing element is located on the head 171. The outer diameter of the plug end 211 is approximately equal to the outer diameter of the first ring portion 161. When the plug end 211 pushes the valve core ring 16 into the second chamber 114, the rear end of the plug end 211 is located in the third chamber 115 and seals against the first sealing element, preventing liquid from overflowing from the outer wall of the plug end 211 into the socket housing 11. Correspondingly, the outer diameter of the fourth ring portion 222 is also approximately equal to the outer diameter of the head 171. To ensure that when the plug end 211 abuts against the valve core ring 16, the head 171 abuts against the fourth ring portion 222. The head 171 pushes the valve core 22 against the fourth chamber 213, causing the valve core 22 to exit the fifth chamber, and the head 171 enters the fourth chamber 213, ensuring that the fifth chamber is connected to the first through hole 164. In this embodiment, the outer diameter of the plug end 211 is approximately equal to the outer diameter of the first ring portion 161, and the outer diameter of the fourth ring portion 222 is also approximately equal to the outer diameter of the head 171. "Equal" means that the outer diameter of the plug end 211 is equal to the outer diameter of the first ring portion 161, and the outer diameter of the fourth ring portion 222 is the same as the outer diameter of the head 171; or, the outer diameter of the plug end 211 and the outer diameter of the first ring portion 161 can also be within a certain error range, and the outer diameter of the fourth ring portion 222 and the outer diameter of the head 171 can also be within a certain error range, so as to ensure that the plug end 211 can seal with the first sealing element and the second sealing element on the head 171 can seal with the fourth limiting structure.

[0058] In another embodiment, such as Figure 9-2 As shown, the second elastic member 18 abuts against the second ring portion 162, and the first ring portion 161 abuts against the rear end face of the plug end 211. When it is necessary to detach the plug 2 from the socket 1, as follows... Figure 10-1 and Figure 10-2As shown, when the sliding sleeve 12 is manually pushed backward, the plug end 211 tends to slide outward under the bias of the second elastic element 18. The limiting surface 122 of the sliding sleeve 12 releases the restriction on the radial movement of the limiting steel ball 14, so that the limiting steel ball 14 and the pushing steel ball 13 move along the first conical surface 2123, and both the limiting steel ball 14 and the pushing steel ball 13 pass over the driving ring 212 to the rear side of the driving element, thereby completing the unlocking of the plug 2 and the socket 1. Compared with the prior art CN202323438667.3, this utility model does not require the additional setting of a third spring and locking ball sleeve and other corresponding structures, and can also facilitate the user to unlock the plug 2 and the socket 1 with one hand. It reduces the structural complexity of the socket 1, thereby reducing the cost. It also reduces the number of elastic elements, reducing the risk of failure due to elastic elements.

[0059] By setting the pushing steel ball 13 and the limiting steel ball 14 in the first mounting hole 111 and the second mounting hole 112 respectively, and allowing the pushing steel ball 13 and the limiting steel ball 14 to move axially within the first mounting hole 111 and the second mounting hole 112, compared with the straight hole in the prior art CN202020505115.7, the axial movement of the pushing steel ball 13 and the limiting steel ball 14 increases the mating stroke during the plug 2 insertion process, increases the vibration information and impact sound feedback to the user from the collision between the pushing steel ball 13 and the limiting steel ball 14 and the socket housing 11 or the plug housing 21, and improves the accuracy of the user's judgment on the mating status of the plug 2 and the socket 1; the axial extension of the first mounting hole 111 and the second mounting hole 112 reduces the possibility of the pushing steel ball 13 and the limiting steel ball 14 being stuck. The plug end 211 needs to enter the third chamber 115 from the first chamber 113 to ensure that the plug end 211 has a longer guiding stroke and avoid misalignment between the plug 2 and the socket 1.

[0060] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A liquid connector, comprising a socket and a plug, wherein the socket includes a socket housing and a sliding sleeve sleeved on the socket housing and axially movable relative to the socket housing, the socket housing having a pushing steel ball that can push the sliding sleeve axially, the plug including a plug housing, the rear end of the plug housing being a plug-in end for insertion into the front end of the socket housing, the plug-in end having a driving ring, the pushing steel ball pushing the sliding sleeve axially under the drive of the driving ring, the socket housing having a limiting steel ball that can move radially along the socket housing, the sliding sleeve restricting the radial outward movement of the limiting steel ball, characterized in that, The pushing steel ball and the limiting steel ball are the same size. The socket housing is provided with a first mounting hole for axial movement of the pushing steel ball and a second mounting hole for axial movement of the limiting steel ball. The first mounting hole and the second mounting hole are axially misaligned. The drive ring has a first stroke and a second stroke during the insertion process. During the first stroke, the pushing steel ball is driven to move the sliding sleeve axially to release the radial restriction on the limiting steel ball. During the second stroke, the limiting steel ball is driven to the front side of the drive ring. The limiting steel ball keeps the plug housing and the socket housing locked under the restriction of the sliding sleeve.

2. The liquid connector according to claim 1, characterized in that, The front end of the first mounting hole is located in front of the front end of the second mounting hole.

3. The liquid connector according to claim 1, characterized in that, The wall of the first mounting hole includes a first limiting part and a second limiting part, which pushes the steel ball to move axially between the first limiting part and the second limiting part. Both the first limiting part and the second limiting part are perpendicular to the axial direction of the socket housing.

4. The liquid connector according to claim 1, characterized in that, The outer periphery of the drive ring has a first drive inclined surface, an outer ring surface, and a first conical surface distributed sequentially from back to front. The first drive inclined surface drives the pushing steel ball and the limiting steel ball in turn. The first conical surface forms a limiting groove with the outer peripheral wall of the plug housing. When the limiting steel ball moves axially to abut against the wall of the first mounting hole, it moves radially along the socket housing and passes through the outer ring surface before entering the limiting groove to lock the plug housing.

5. The liquid connector according to claim 1, characterized in that, The inner wall of the sliding sleeve has a second driving inclined surface and a limiting surface distributed from front to back. The pushing steel ball keeps in contact with the second driving inclined surface, and the limiting surface blocks the limiting steel ball in the radial direction of the socket housing.

6. The liquid connector according to claim 1, characterized in that, The socket housing has a tail sleeve at its rear end. The socket housing has a first limiting structure, and the tail sleeve has a second limiting structure. The sliding sleeve moves axially between the first limiting structure and the second limiting structure. A first elastic element that biases the sliding sleeve towards the pushing steel ball is provided between the sliding sleeve and the tail sleeve.

7. The liquid connector according to claim 6, characterized in that, The socket also includes a valve core ring and a valve stem. The inner peripheral wall of the socket housing at the end away from the tail sleeve has a third limiting structure. The valve core ring is sealed to the end of the socket housing away from the tail sleeve. One end of the valve stem abuts against the tail sleeve, and the other end is sealed to the valve core ring. A second elastic element is provided between the valve stem and the valve core ring to bias the valve core ring, causing the valve core ring to abut against the third limiting structure.

8. The liquid connector according to claim 7, characterized in that, The valve core ring has a first through hole, and the valve stem has an abutment plate that abuts against the tail sleeve. The abutment plate is provided with a second through hole. When the plug and socket are in the locked state, the first through hole and the second through hole are connected to form a fluid channel.

9. The liquid connector according to claim 7, characterized in that, The plug also includes a valve core, and the inner wall of the plug end has a fourth limiting structure that makes the inner diameter of the plug end smaller than the inner diameter of the plug housing. A third elastic element is provided between the valve core and the plug housing to bias the valve core towards the pushing steel ball so that the valve core is sealed to the inner wall of the fourth limiting structure.

10. The liquid connector according to claim 9, characterized in that, After the plug-in end enters the socket housing, it is sealed and connected to the inner wall of the third limiting structure. When the valve stem enters the plug-in end and comes into contact with the fourth limiting structure, it is sealed and connected to the inner wall of the fourth limiting structure.

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