阅读说明：本技术 接头组件 (Joint assembly ) 是由 黄英文 陈昌中 徐安泽 李启钟 崔润� 袁露 于 2020-12-24 设计创作，主要内容包括：本申请提供了一种接头组件,该接头组件包括第一接头和与第一接头对接的第二接头,第一接头包括：主体,主体朝向第二接头一端为开口端,主体开口端的侧壁上开设有至少一个容纳钢球的容纳孔；外壳,外壳上开设有与外壳内部连通的气孔；以及卡套,其与外壳固定连接且位于主体的开口端；钢球能够与卡套的内壁接触,通过充气或者放气,外壳能够带动卡套向远离开口端的一侧运动或者复位,从而释放或者锁紧钢球。利用该接头组件,由于避免了使用人力扳动卡套,使得接头组件的拆装过程简单、时间消耗少；且降低了工作人员的劳动强度。(The present application provides a joint assembly, this joint assembly includes first joint and the second that docks with first joint, and first joint includes: the side wall of the opening end of the main body is provided with at least one accommodating hole for accommodating the steel ball; the shell is provided with an air hole communicated with the inside of the shell; the clamping sleeve is fixedly connected with the shell and is positioned at the opening end of the main body; the steel ball can contact with the inner wall of cutting ferrule, and through aerifing or gassing, the shell can drive the cutting ferrule to keeping away from the one side motion of open end or reseing to release or locking steel ball. By utilizing the joint component, the clamping sleeve is prevented from being pulled by manpower, so that the disassembly and assembly process of the joint component is simple and the time consumption is less; and the labor intensity of workers is reduced.)

1. A fitting assembly comprising a first fitting and a second fitting interfacing with the first fitting, the first fitting comprising:

a main body, inside which a valve core assembly is arranged; one end of the main body facing the second joint is an open end, and the side wall of the open end of the main body is provided with at least one accommodating hole for accommodating a steel ball;

the shell is provided with an air hole communicated with the inside of the shell; and

the clamping sleeve is fixedly connected with the shell and is positioned at the opening end of the main body; the steel ball can with the inner wall contact of cutting ferrule, through aerifing or gassing, the shell can drive the cutting ferrule is to keeping away from the one side motion of open end or reseing to release or lock the steel ball.

2. The fitting assembly of claim 1 wherein an inner wall of said ferrule facing an end of said second fitting is provided with a ferrule recess, said ferrule recess being movable to said ball to provide clearance for said ball to release said ball.

3. The connector assembly of claim 1, wherein a ferrule spring is mounted between the ferrule and the body, the housing is capable of driving the ferrule to move to a side away from the open end to release the steel ball and compress the ferrule spring, and the ferrule spring is capable of driving the ferrule to return under the action of a spring force to lock the steel ball.

4. The connector assembly of claim 3 wherein said ferrule spring is a spring.

5. The fitting assembly of claim 1 wherein a seal is disposed between said housing and said body, said seal comprising a first seal and a second seal, said first seal and said second seal being axially disposed on opposite sides of said vent.

6. The fitting assembly of claim 5 wherein said first seal ring is disposed on one side of said open end of said body, said body defining an annular groove therein for receiving said first seal ring; the second sealing ring is positioned on one side far away from the opening end of the main body, and an annular groove for accommodating the second sealing ring is formed in the shell.

7. The joint assembly according to claim 1, wherein a plurality of the receiving holes are uniformly distributed along a circumferential direction of the main body, the receiving holes are through holes, and the receiving holes correspond to the steel balls one to one.

8. The joint assembly of claim 1, wherein a spool elastic member is disposed in the spool assembly, the spool elastic member is capable of being compressed and deformed under the extrusion of the second joint, and the spool elastic member is capable of driving the spool to return under the action of elastic force.

9. The connector assembly of claim 1, wherein a third sealing ring and a fourth sealing ring are disposed on the inner wall of the main body, the third sealing ring and the fourth sealing ring are respectively disposed in annular grooves on the inner wall of the main body, and both of the annular grooves are disposed between the valve core assembly and the accommodating hole in the axial direction;

the third sealing ring and the fourth sealing ring can simultaneously press the inner wall of the main body and the outer wall of the second joint to be connected with the first joint and the second joint in a sealing mode.

10. The joint assembly of claim 1, wherein a ball receiving groove is formed in an outer wall of the second joint, and the ball receiving groove of the second joint and an inner wall of the ferrule of the first joint can limit radial movement of the ball, so that the ball locks the second joint to maintain a butt joint state of the first joint and the second joint.

Technical Field

The invention relates to the technical field of joint connection, in particular to a joint assembly.

Background

A quick connector is a connection device that quickly connects or disconnects a flow path to achieve quick disassembly. The quick connector is widely applied to the air conditioning industry, such as the processes of vacuumizing an air conditioner outdoor unit, refrigerant filling, commodity inspection testing and the like, and can also be applied to the processes of water inspection, gas inspection, helium inspection and the like of a closed container, such as an inner container of an air energy water heater, parts of the inner container or an accessory system of the inner container.

The connector assembly of the existing quick connector comprises a male connector and a female connector, the female connector comprises a main body, a clamping sleeve and a steel ball, the clamping sleeve and the steel ball are sleeved at the opening end of the main body, the clamping sleeve is moved manually to one side far away from the opening end, the steel ball can be released, and therefore the male connector is allowed to be inserted into and pulled out of the female connector, and the connector assembly is assembled and disassembled. After external force is removed, the cutting ferrule can reset to the open end of the main body under the action of a cutting ferrule spring arranged between the cutting ferrule and the main body, so that the steel ball is locked, the male connector is locked after the assembly of the female connector is completed, or the male connector is prevented from directly returning to the female connector after the disassembly of the female connector is completed.

However, in the prior art, the clamping sleeve needs to be manually pulled to move towards the side far away from the opening end when the joint assembly is assembled or disassembled, and the process is complicated and wastes time; the clamping sleeve spring has larger elasticity, so that the labor intensity of manual operation is higher; meanwhile, the manual work is needed, so that the requirement of the process automation operation cannot be met, and the automatic operation of the processes of vacuumizing, refrigerant filling, commodity inspection testing, leakage detection and the like in the air conditioning industry is not facilitated.

Disclosure of Invention

To the problem among the above-mentioned prior art, this application provides a joint Assembly, through set up the gas pocket on the shell, utilize the gas pocket to aerify or deflate for the cutting ferrule with shell fixed connection moves or resets to the one side of keeping away from the open end, thereby can release the steel ball and allow male joint to insert and pop out female joint, with the assembly of assembling and disassembling joint Assembly. The clamping sleeve is prevented from being pulled by manpower, so that the process is simple and the time consumption is low; the labor intensity of workers is reduced; meanwhile, the method can meet the requirements of procedure automation operation, and is favorable for realizing automation operation of procedures such as vacuumizing, refrigerant filling, commodity inspection testing, leakage detection and the like in the air conditioning industry.

The present invention provides a joint assembly comprising a first joint and a second joint interfacing with the first joint, the first joint comprising: a main body, inside which a valve core assembly is arranged; one end of the main body facing the second joint is an open end, and the side wall of the open end of the main body is provided with at least one accommodating hole for accommodating a steel ball; the shell is provided with an air hole communicated with the inside of the shell; the clamping sleeve is fixedly connected with the shell and is positioned at the opening end of the main body; the steel ball can with the inner wall contact of cutting ferrule, through aerifing or gassing, the shell can drive the cutting ferrule is to keeping away from the one side motion of open end or reseing to release or lock the steel ball. By utilizing the joint component, the air hole is arranged on the shell, and the air hole is utilized for inflating or deflating, so that the clamping sleeve fixedly connected with the shell moves or resets towards one side far away from the opening end, the steel ball can be released, and the second joint is allowed to be smoothly inserted into and ejected out of the first joint, thereby assembling and disassembling the joint component; the clamping sleeve is prevented from being pulled by manpower, so that the process is simple and the time consumption is low; the labor intensity of workers is reduced; meanwhile, the method can meet the requirements of procedure automation operation, and is favorable for realizing automation operation of procedures such as vacuumizing, refrigerant filling, commodity inspection testing, leakage detection and the like in the air conditioning industry.

In one embodiment, a sleeve groove is arranged on the inner wall of one end of the sleeve facing the second connector, and the sleeve groove can move to the steel ball to provide a movable space for the steel ball so as to release the steel ball. Through the embodiment, the clamping sleeve fixedly connected with the shell can release the steel ball by the aid of the arrangement of the clamping sleeve groove and moving towards one side far away from the opening end, so that automation of assembling and disassembling the joint assembly is facilitated.

In one embodiment, a sleeve elastic part is installed between the sleeve and the main body, the shell can drive the sleeve to move towards one side far away from the opening end so as to release the steel ball and compress the sleeve elastic part, and the sleeve elastic part can drive the sleeve to reset under the action of elastic force so as to lock the steel ball. Through the embodiment, the clamping sleeve can be driven to reset to lock the steel ball, and the automation of assembling and disassembling the joint assembly is facilitated.

In one embodiment, the ferrule spring is a spring. Through this embodiment, be favorable to reducing the cost of joint Assembly and improve joint Assembly's stability to be favorable to joint Assembly's popularization and application.

In one embodiment, a sealing ring is disposed between the housing and the main body, and the sealing ring includes a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are respectively located at two sides of the air hole in the axial direction. Through this embodiment, be favorable to avoiding gaseous leaking to the external world from main part and shell within a definite time, influence shell and the removal of card cover under the atmospheric pressure effect to be favorable to the automation of assembling and disassembling joint subassembly.

In one embodiment, the first sealing ring is positioned at one side of the opening end of the main body, and an annular groove for accommodating the first sealing ring is formed in the main body; the second sealing ring is positioned on one side far away from the opening end of the main body, and an annular groove for accommodating the second sealing ring is formed in the shell. With this embodiment, the annular groove provides a receiving space for the sealing ring.

In one embodiment, the accommodating holes are uniformly distributed along the circumferential direction of the main body, the accommodating holes are through holes, and the accommodating holes correspond to the steel balls one to one. Through this embodiment, be favorable to the even atress of joint Assembly to improve joint Assembly's life.

In one embodiment, a valve core elastic element is arranged in the valve core assembly, the valve core elastic element can be compressed and deformed under the extrusion of the second connector, and the valve core elastic element can drive the valve core to reset under the action of elastic force. By this embodiment, the valve core of the first connector is advantageously reset to eject the second connector.

In one embodiment, a third sealing ring and a fourth sealing ring are arranged on the inner wall of the main body, the third sealing ring and the fourth sealing ring are respectively positioned in annular grooves on the inner wall of the main body, and in the axial direction, the two annular grooves are positioned between the valve core assembly and the accommodating hole; the third sealing ring and the fourth sealing ring can simultaneously press the inner wall of the main body and the outer wall of the second joint to be connected with the first joint and the second joint in a sealing mode. Through this embodiment, realized double-deck sealed, be favorable to avoiding in the flow path medium to leak from between first joint and the second joint.

In one embodiment, a steel ball receiving groove is formed in an outer wall of the second joint, and the steel ball receiving groove of the second joint and the inner wall of the ferrule of the first joint can limit radial movement of the steel ball, so that the steel ball locks the second joint to maintain a butt joint state of the first joint and the second joint. Through this embodiment, can connect the back at first joint and second, restrict the steel ball between the bottom wall of cutting ferrule inner wall and steel ball holding tank to reach the purpose that the locking second connects, with the butt joint state that keeps first joint and second to connect.

The application provides a joint Assembly, compare in prior art, has following beneficial effect.

1. According to the joint assembly provided by the invention, the air hole is formed in the shell, and the air hole is utilized for inflation or deflation, so that the clamping sleeve fixedly connected with the shell moves or resets towards one side far away from the opening end, and the steel ball can be released, so that the second joint is allowed to be smoothly inserted into and ejected out of the first joint, and the joint assembly is assembled and disassembled; the clamping sleeve is prevented from being pulled by manpower, so that the process is simple and the time consumption is low; the labor intensity of workers is reduced; meanwhile, the method can meet the requirements of procedure automation operation, and is favorable for realizing automation operation of procedures such as vacuumizing, refrigerant filling, commodity inspection testing, leakage detection and the like in the air conditioning industry.

2. The cutting ferrule is provided with the cutting ferrule recess on the inner wall of the cutting ferrule orientation second joint's one end, thereby the cutting ferrule recess can remove to the steel ball department and provide the space of activity for the steel ball and release the steel ball, make with shell fixed connection's cutting ferrule to keeping away from the one side motion alright release steel ball of open end to be favorable to the automation of assembly and disassembly joint subassembly.

3. A clamping sleeve elastic piece is arranged between the clamping sleeve and the main body, and the clamping sleeve elastic piece can drive the clamping sleeve to reset so as to lock the steel ball, so that the automation of assembling and disassembling the joint assembly is facilitated.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings, in which:

FIG. 1 shows a schematic structural view of a first joint according to an embodiment of the present invention;

FIG. 2 illustrates the second joint moving toward the first joint in one embodiment of the invention;

FIG. 3 illustrates a structural change of the first connector after inflation of the vent in one embodiment of the present invention;

FIG. 4 shows a second connector inserted into a first connector in accordance with an embodiment of the present invention;

FIG. 5 shows the second connector in an assembled position in accordance with an embodiment of the present invention;

figure 6 shows the resetting of the ferrule in one embodiment of the invention;

FIG. 7 shows an assembled structure of a first joint and a second joint according to an embodiment of the present invention;

FIG. 8 illustrates a structural change of the first connector after inflation of the air hole in another embodiment of the present invention;

FIG. 9 shows movement of the ferrule recess toward the ball in another embodiment of the present invention;

FIG. 10 shows the second connector disengaged from the first connector in another embodiment of the invention;

figure 11 shows the resetting of a ferrule in another embodiment of the invention;

figure 12 shows the disassembled joint assembly in another embodiment of the present invention.

List of reference numerals:

10-a first joint; 11-a body; 12-a valve cartridge assembly; 13-a receiving hole; 14-a housing; 15-pores; 16-a card sleeve; 17-a ferrule recess; 18-steel balls; 19-ferrule elastic; 20-a first sealing ring; 21-a second seal ring; 22-a third seal ring; 23-a fourth seal ring; 24-a spool spring; 30-a second linker; 31-steel ball accommodating groove.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1 to 12, the present embodiment provides a joint assembly including a first joint 10 and a second joint 30 that is butted against the first joint 10, the first joint 10 including, as shown in fig. 1: a main body 11, in which a valve core assembly 12 is provided; one end of the main body 11 facing the second joint 30 is an open end, and the side wall of the open end of the main body 11 is provided with at least one accommodating hole 13 for accommodating the steel ball 18; the shell 14, the shell 14 is equipped with the air vent 15 communicated with the inside of the shell; and a ferrule 16 fixedly connected with the housing 14 and located at the open end of the body 11; the steel ball 18 can contact the inner wall of the ferrule 16, and by inflating or deflating, the housing 14 can drive the ferrule 16 to move or reset to the side away from the open end, so as to release or lock the steel ball 18.

The inner diameter of the receiving hole 13 is slightly larger than the diameter of the steel ball 18 so that the steel ball 18 can move radially along the first joint 10 in the receiving hole 13.

As shown in fig. 2 to 12, the first connector 10 is a female connector, and the second connector 30 is a male connector.

The air pipe fitting can be threaded into the air hole 15 to inflate the housing 14 of the first fitting 10. The body 11 remains stationary at all times during the docking or undocking of the first connector 10 with the second connector 30. During the assembling process, the housing 14 of the first connector 10 moves to the side far away from the opening end of the main body 11 under the action of air pressure through inflation, so as to drive the ferrule 16 screwed with the housing 14 to move to the side far away from the opening end of the main body 11, so as to release the steel ball 18, and the second connector 30 can be smoothly inserted into the first connector 10. During the disassembly process, through inflation, the housing 14 of the first connector 10 moves towards the side far away from the open end of the main body 11 under the action of air pressure, so as to drive the ferrule 16 in threaded connection with the housing 14 to move towards the side far away from the open end of the main body 11, so as to release the steel ball 18, and the second connector 30 can be smoothly ejected out of the first connector 10.

During the assembling process, the clamping sleeve 16 of the first connector 10 moves to the left to reset through deflation, so as to lock the steel ball 18, and the steel ball 18 of the first connector 10 locks the second connector 30 to maintain the butt joint state of the first connector 10 and the second connector 30, thereby completing the assembling operation of the connector assembly. During the disassembly process, the ferrule 16 of the first connector 10 is reset to the left by the deflation, thereby locking the steel ball 18, so that the second connector 30 cannot be directly withdrawn into the first connector 10 again to complete the disassembly operation of the connector assembly.

The present embodiment provides a joint assembly, which is assembled and disassembled by providing an air hole 15 on a housing 14, and using the air hole 15 to inflate or deflate, so that a ferrule 16 fixedly connected with the housing 14 moves or resets to a side far from an open end, and a steel ball 18 can be released to allow a second joint 30 to be smoothly inserted into and ejected out of a first joint 10; the clamping sleeve 16 is prevented from being pulled by manpower, so that the process is simple and the time consumption is low; the labor intensity of workers is reduced; meanwhile, the method can meet the requirements of procedure automation operation, and is favorable for realizing automation operation of procedures such as vacuumizing, refrigerant filling, commodity inspection testing, leakage detection and the like in the air conditioning industry.

Preferably, as shown in fig. 1 to 12, a ferrule groove 17 is provided on an inner wall of the ferrule 16 at an end facing the second connector 30, and the ferrule groove 17 can move to the steel ball 18 to provide a space for the steel ball 18 to move so as to release the steel ball 18.

In the non-inflated condition, the inner wall of the ferrule 16 limits the outward radial movement of the ball 18 along the first connector 10, thereby achieving the purpose of locking the ball 18. After inflation, the ferrule groove 17 moves to the steel ball 18 to provide a movable space for the steel ball 18, and the steel ball 18 can move into the ferrule groove 17, i.e., can move outward in the radial direction of the first connector 10, thereby achieving the purpose of releasing the steel ball 18.

In this embodiment, the retainer groove 17 is provided to move the retainer 16 fixedly connected to the housing 14 to a side away from the open end to release the steel ball 18, thereby facilitating automation of assembling and disassembling the joint assembly.

In one embodiment, as shown in fig. 1 to 12, a ferrule elastic member 19 is installed between the ferrule 16 and the main body 11, the housing 14 can drive the ferrule 16 to move to a side away from the open end to release the steel ball 18 and compress the ferrule elastic member 19, and the ferrule elastic member 19 can drive the ferrule 16 to reset under the action of elastic force to lock the steel ball 18.

The ferrule spring 19 is primarily used to reset the ferrule 16 to lock the ball 18, facilitating automation of assembly and disassembly of the joint assembly.

Specifically, during inflation, the housing 14 drives the ferrule 16 to move to a side away from the open end, so that the steel ball 18 is released, and meanwhile, the ferrule elastic member 19 is squeezed and elastically deformed to store elastic potential energy. After the inflation is completed, the gas in the housing 14 leaves through the air hole 15, the elastic sleeve 19 is not squeezed any more, the elastic potential energy stored during squeezing is released, and the sleeve 16 resets along with the restoration of the elastic sleeve 19, namely the sleeve 16 moves towards the opening end of the main body 11 until the sleeve is static. After the cutting sleeve 16 is reset, the cutting sleeve groove 17 returns to the opening end of the main body 11, and the inner wall of the cutting sleeve 16 limits the steel ball 18 to move outwards along the radial direction of the first connector 10, so that the purpose of locking the steel ball 18 is achieved.

In this embodiment, the elastic member 19 of the ferrule is advantageous for driving the ferrule 16 to reset so as to lock the steel ball 18, thereby facilitating the automation of assembling and disassembling the joint assembly.

Preferably, the ferrule elastic member 19 is a spring. The spring is used as a common elastic part, so that the cost of the joint component is reduced, the stability of the joint component is improved, and the popularization and the application of the joint component are facilitated.

In one embodiment, as shown in fig. 1 to 12, a seal ring is disposed between the housing 14 and the main body 11, and the seal ring includes a first seal ring 20 and a second seal ring 21, and the first seal ring 20 and the second seal ring 21 are respectively located on both sides of the air hole 15 in the axial direction.

The first sealing ring 20 is arranged close to the opening end of the main body 11 relative to the air hole 15, so that the gas flowing towards the opening end side of the main body 11 is prevented from leaking to the outside from the space between the main body 11 and the shell 14; the second sealing ring 21 is disposed on the side of the air hole 15 away from the open end of the main body 11, so that the gas flowing toward the side away from the open end of the main body 11 is prevented from leaking to the outside from between the main body 11 and the housing 14.

This embodiment, by using the first sealing ring 20 and the second sealing ring 21, is beneficial to prevent gas from leaking to the outside from the space between the main body 11 and the housing 14, and influences the movement of the housing 14 and the ferrule 16 under the action of air pressure, thereby facilitating the automation of assembling and disassembling the joint assembly.

Alternatively, as shown in fig. 1 to 12, the first sealing ring 20 is located at one side of the open end of the main body 11, and an annular groove for accommodating the first sealing ring 20 is formed on the main body 11; the second sealing ring 21 is located on the side away from the open end of the main body 11, and an annular groove for accommodating the second sealing ring 21 is formed on the housing 14.

The annular groove in this embodiment provides a receiving space for the sealing ring. Specifically, the depth of the annular groove is slightly smaller than the thickness of the sealing ring, so that the sealing ring is extruded when in use to improve the sealing performance of the sealing ring.

In one embodiment, the receiving holes 13 are uniformly distributed along the circumferential direction of the body 11, the receiving holes 13 are through holes, and the receiving holes 13 correspond to the steel balls 18 one by one.

The steel balls 18 are multiple, the accommodating holes 13 correspond to the steel balls 18 one by one, and the accommodating holes 13 are uniformly distributed along the circumferential direction of the main body 11, so that stress concentration can be avoided, uniform stress of the joint assembly is facilitated, and the service life of the joint assembly is prolonged.

In one embodiment, as shown in fig. 1 to 12, a valve core elastic element 24 is disposed in the valve core assembly 12, the valve core elastic element can be compressed and deformed under the extrusion of the second joint, and the valve core elastic element 24 can bring the valve core back under the action of elastic force.

The spool elastic member 24 is mainly used for returning the spool of the first connector 10 to eject the second connector 30. Specifically, the second joint 30 presses the spool, and the spool elastic member 24 is pressed and elastically deformed to store elastic potential energy. When the gas is filled, the steel ball 18 can move into the clamping sleeve groove 17, the second joint 30 is not extruded by the steel ball 18 at the moment and can move, the elastic potential energy stored by the valve core elastic part 24 during extrusion is released, and the valve core of the first joint 10 resets along with the restoration of the valve core elastic part 24.

Preferably, the spool elastic member 24 is a spring. The plurality of springs are evenly distributed along the circumference of the valve core assembly 12.

In this embodiment, the valve core of the first connector 10 is restored to eject the second connector 30 by providing the valve core elastic member 24.

In one embodiment, as shown in fig. 1 to 12, a third sealing ring 22 and a fourth sealing ring 23 are disposed on the inner wall of the main body 11, the third sealing ring 22 and the fourth sealing ring 23 are respectively located in annular grooves on the inner wall of the main body 11, and both the annular grooves are located between the spool assembly 12 and the accommodating hole 13 in the axial direction; the third and fourth sealing rings 22 and 23 can simultaneously press the inner wall of the body 11 and the outer wall of the second joint 30 to sealingly connect the first and second joints 10 and 30.

The third sealing ring 22 and the fourth sealing ring 23 play a role of double sealing, and the medium in the flow path is prevented from leaking between the first joint 10 and the second joint 30. After the first joint 10 and the second joint 30 are assembled, the outer walls of the third sealing ring 22 and the fourth sealing ring 23 abut against the inner wall of the first joint 10, and the inner walls of the third sealing ring 22 and the fourth sealing ring 23 abut against the outer wall of the second joint 30, so that sealing is realized.

In the present embodiment, the third seal ring 22 and the fourth seal ring 23 are used to realize double-layer sealing, which is advantageous for preventing the medium in the flow path from leaking between the first joint 10 and the second joint 30.

In one embodiment, as shown in fig. 2 to 12, a ball receiving groove 31 is formed on an outer wall of the second joint 30, and the ball receiving groove 31 of the second joint 30 and an inner wall of the ferrule 16 of the first joint 10 can limit radial movement of the ball 18, so that the ball 18 locks the second joint 30 to maintain a butt joint state of the first joint 10 and the second joint 30.

After docking is complete, the air tube connector stops inflating the interior of the housing 14. As shown in fig. 7, the ferrule groove 17 is returned to the open end of the main body 11, the inner wall of the ferrule 16 limits the outward movement of the steel ball 18 along the radial direction of the first connector 10, the steel ball 18 is limited between the inner wall of the ferrule 16 and the bottom wall of the steel ball receiving groove 31, and a part of the steel ball 18 is clamped in the steel ball receiving groove 31 of the second connector 30, so that the second connector 30 cannot move relative to the first connector 10, thereby achieving the purpose of locking the second connector 30 to maintain the butt joint state of the first connector 10 and the second connector 30.

In this embodiment, by providing the steel ball receiving groove 31 at the second joint 30, the steel ball 18 can be limited between the inner wall of the ferrule 16 and the bottom wall of the steel ball receiving groove 31 after the first joint 10 and the second joint 30 are assembled, so that the purpose of locking the second joint 30 is achieved, and the butt joint state of the first joint 10 and the second joint 30 is maintained.

Example one

The method of butting the first joint 10 and the second joint 30 in this embodiment includes the following steps.

First, as shown in fig. 2, the second joint 30 is moved toward the first joint 10.

Next, as shown in fig. 3, the air hole 15 is inflated by the air pipe joint, and the housing 14 of the first joint 10 is inflated. Through inflation, the outer shell 14 of the first connector 10 moves towards the side far away from the opening end of the main body 11 under the action of air pressure, so that the clamping sleeve 16 in threaded connection with the outer shell 14 is driven to move towards the side far away from the opening end of the main body 11 until the clamping sleeve groove 17 on the clamping sleeve 16 moves to the position of the steel ball 18. The ferrule groove 17 provides a movable space for the steel ball 18, and the steel ball 18 can move into the ferrule groove 17, namely can move outwards along the radial direction of the first connector 10, so that the purpose of releasing the steel ball 18 is achieved. At the same time, movement of the ferrule 16 to a side away from the open end of the body 11 causes the ferrule spring 19 to compress and contract, with the ferrule spring 19 being located between the ferrule 16 and the body 11.

Then, as shown in fig. 4, the second connector 30 is inserted smoothly into the first connector 10 and a portion of the steel ball 18 is pressed into the ferrule recess 17. The spool of the second joint 30 and the spool of the first joint 10 contact each other.

Then, as shown in fig. 5, under the action of the external force, the second joint 30 continues to extend into the first joint 10, at this time, the second joint 30 presses the valve core, and the valve core elastic member 24 is pressed and elastically deformed to store elastic potential energy. The second connector 30 reaches the assembly position where the ball receiving slot 31 of the second connector 30 is aligned with the ball 18.

Then, as shown in fig. 6, the inflation is stopped, and the gas flows out from the gas hole 15 to the outside. The ferrule elastic member 19 is no longer compressed and the stored elastic potential energy is released as it is compressed, the ferrule elastic member 19 gradually returning to its original length until the ferrule 16 is reset.

Then, as shown in fig. 7, after the ferrule 16 is reset, the ferrule groove 17 returns to the open end of the main body 11, the inner wall of the ferrule 16 contacts the steel ball 18 and limits the outward radial movement of the steel ball 18 along the first connector 10, a part of the steel ball 18 is located in the steel ball receiving groove 31, and the steel ball 18 is limited between the inner wall of the ferrule 16 and the bottom wall of the steel ball receiving groove 31, so that the purpose of locking the second connector 30 is achieved, and the butt joint state of the first connector 10 and the second connector 30 is maintained, so as to complete the butt joint of the first connector 10 and the second connector 30.

Example two

The method of separating the first joint 10 and the second joint 30 in this embodiment includes the following steps.

As shown in fig. 7, the first joint 10 and the second joint 30 are in a coupled state.

First, as shown in fig. 8, the air hole 15 is inflated by the air pipe joint, and the housing 14 of the first joint 10 is inflated. By inflation, as shown in fig. 9, the housing 14 of the first connector 10 moves to the side away from the open end of the main body 11 under the action of air pressure, so as to drive the ferrule 16 screwed with the housing 14 to move to the side away from the open end of the main body 11, and the ferrule groove 17 on the ferrule 16 moves to the steel ball 18. At the same time, movement of the ferrule 16 to a side away from the open end of the body 11 causes the ferrule spring 19 to compress

Then, as shown in fig. 10, the ferrule groove 17 moves to the steel ball 18, which provides a movable space for the steel ball 18, and the steel ball 18 can move into the ferrule groove 17, i.e. can move outward along the radial direction of the first connector 10, thereby achieving the purpose of releasing the steel ball 18. After the steel ball 18 is released, the second joint 30 is not engaged with the first joint 10 any more, and thus moves to a side away from the first joint 10 under the action of the valve core elastic member 24 until being disengaged from the first joint 10. The second connector 30 can be completely separated from the first connector 10 by an external force.

Then, as shown in fig. 11, the inflation is stopped, and the gas flows out from the gas hole 15 to the outside. The ferrule elastic member 19 is no longer compressed and the stored elastic potential energy is released as it is compressed, the ferrule elastic member 19 gradually returning to its original length until the ferrule 16 is reset.

Then, as shown in fig. 12, after the reset, the inner wall of the ferrule 16 limits the outward movement of the steel ball 18 along the radial direction of the first connector 10, so as to achieve the purpose of locking the steel ball 18, so that the second connector 30 cannot be directly retracted into the first connector 10 again to complete the disassembling operation of the connector assembly.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.