quick connector

Abstract

The utility model relates to a quick joint, include: a main part, a valve core subassembly, a control sliding sleeve and a locking mechanism. The main part defines an axial direction, a radial direction and a circumferential direction, and the main part includes a first channel and a second channel; The valve core subassembly is contained in the first channel, and the first channel is blocked into a first space and a second space, and the second space is used for a pipe plug to be connected in communication. The control sliding sleeve can be moved in a first position and a second position along the axial direction and can be rotatably sleeved in the main part along the circumferential direction, when the control sliding sleeve is located in the first position, the first space and the second channel are mutually communicated, when the control sliding sleeve is located in the second position, the first space and the second channel are not communicated. The locking mechanism is arranged in the main part, and the locking mechanism includes at least one first stop piece and a locking sliding sleeve, and the at least one first stop piece can be locked or released the pipe plug by sliding the locking sliding sleeve.

Description

Technical Field

[0001] This invention relates to connectors, and more particularly to a quick connector. Background Technology

[0002] Existing quick couplings are widely used in various fluid transfer systems, especially in tools and devices driven by high-pressure gas or liquid, such as pneumatic tools or hydraulic equipment. These quick couplings can quickly connect and disconnect pipelines, improving operational convenience and efficiency. Currently, most quick couplings on the market adopt a sliding sleeve control structure, using an axially sliding outer sleeve to control the opening and closing of the internal locking mechanism, allowing for rapid assembly or disassembly of the pipe plug and quick coupling.

[0003] However, the control structures mentioned above generally have drawbacks. For example, during the insertion of the plug, even before it is fully locked in place, the internal high-pressure fluid is often already flowing, which may cause the plug to be ejected due to pressure, resulting in injury to operators or damage to equipment, thus compromising safety. Alternatively, the switching operation of the outer sliding sleeve usually relies solely on simple axial pushing and pulling. If the user accidentally touches the sliding sleeve during operation, it is easy to accidentally release or disengage, reducing the reliability of the device operation.

[0004] Therefore, it is necessary to provide a novel and progressive quick connector to solve the above-mentioned problems. Utility Model Content

[0005] The main purpose of this invention is to provide a quick connector that can effectively improve safety and increase the reliability of device operation, thereby protecting the personal safety of users.

[0006] To achieve the above objectives, this utility model provides a quick connector, comprising: a main body, a valve core assembly, a control sleeve, and a locking mechanism. The main body defines an axial direction, a radial direction, and a circumferential direction. The main body includes a first channel and a second channel that can be selectively connected. The first channel is for inserting a plug, and the second channel is for connecting to a pneumatic source. The valve core assembly is normally housed in the first channel in a closed state, blocking the first channel into a first space and a second space. The second space is for the plug to be inserted into. When the plug is inserted into the second space to a predetermined position, the valve core assembly is forced to switch to an open state, thereby connecting the first space to the second space. The control sleeve is movable along the axial direction to a first position and a second position and is rotatably fitted onto the main body along the circumferential direction. When the control sleeve is in a certain position... In the first position, the first space and the second channel are interconnected. When the control sleeve is in the second position, the first space and the second channel are not interconnected. The locking mechanism is located on the main body and includes at least one first stop and a locking sleeve. The at least one first stop is movably located on the main body in the radial direction. The locking sleeve is axially movable and sleeved on the main body in a locked position and a released position. When the locking sleeve is in the locked position, the at least one first stop can extend into the second space in the radial direction to lock and position the tube plug. When the locking sleeve is in the released position, the at least one first stop can retract in the radial direction to release the tube plug.

[0007] The quick connector further includes a positioning mechanism, which includes a first positioning part and a second positioning part. The first positioning part is disposed on the main body, and the second positioning part is disposed on the control slide. When the control slide is in the first position, rotating the control slide can cause the first positioning part and the second positioning part to block each other in the axial direction, thereby restricting the control slide to remain in the first position.

[0008] The control sleeve and the main body define a joint space, a portion of the locking sleeve is accommodated in the joint space, and another portion of the locking sleeve protrudes from the control sleeve.

[0009] When the control sleeve is in the first position, a portion of the control sleeve is axially positioned and located on the movement path of the locking sleeve, thereby restricting the locking sleeve to remain in the locked position.

[0010] The main body includes a first component and a second component, the second component being assembled to the first component to jointly form the first channel, the first positioning part being disposed on the first component, and the locking mechanism being disposed on the second component.

[0011] The valve core assembly includes a valve seat, a valve body, and a first elastic member. The first member and the second member together clamp and position the valve seat. The valve seat surrounds a valve port that connects the first space and the second space. The valve body is movably accommodated in the first channel along the axial direction to selectively block the valve port. The valve body can be driven by the plug and not block the valve port. The first elastic member is clamped between the valve body and the valve seat so that the valve body normally blocks the valve port.

[0012] The locking mechanism further includes a stop member for the pipe plug to abut against and movably accommodated in the second space, with a portion of the valve body located between the stop member and the valve seat; wherein, when the valve body blocks the valve port, the stop member blocks the at least one first stop member in the radial direction, preventing the at least one first stop member from extending into the second space; when the valve body does not block the valve port, the stop member does not block the at least one first stop member in the radial direction, allowing the at least one first stop member to extend into the second space.

[0013] The quick connector further includes a positioning mechanism, which comprises a positioning screw portion and a positioning member. The positioning screw portion is disposed on the main body, and the positioning member is movable along the axial direction to a third position and a fourth position and is rotatably sleeved on the main body along the circumferential direction. When the positioning member is in the third position, the positioning member and the positioning screw portion are screwed together and positioned, thereby the positioning member blocks the control sleeve in the axial direction, so that the control sleeve cannot move to the second position. When the positioning member is in the fourth position, the positioning member and the positioning screw portion are not screwed together and the positioning member can move in the axial direction, so that the control sleeve can move to the second position.

[0014] The first positioning part is an external thread section, and the second positioning part is an internal thread section. The control sleeve connects the first positioning part and the second positioning part to each other through a helical movement.

[0015] The control sleeve and the main body define a joint space. A portion of the locking sleeve is accommodated within this joint space, while another portion protrudes from the control sleeve. When the control sleeve is in the first position, a portion of the control sleeve is axially positioned along the movement path of the locking sleeve, thus limiting the locking sleeve to remain in the locked position. The positioning mechanism further includes a positioning screw portion and a positioning member. The positioning screw portion is located on the main body, and the positioning member is axially movable between a third position and a fourth position and rotatably fitted onto the main body. When the positioning member is in the third position, the positioning member and the positioning screw portion are screwed together for positioning, thus securing the locking sleeve. The positioning member blocks the control sleeve axially, preventing it from moving to the second position. When the positioning member is in the fourth position, it is not screwed into the positioning screw, allowing it to move axially and enabling the control sleeve to move to the second position. The first positioning part is an external thread, and the second positioning part is an internal thread. The control sleeve is screwed into the first and second positioning parts by a helical movement. The first channel and the second channel are not directly connected axially. The main body also includes at least one first through hole and at least one second through hole. The at least one first through hole penetrates the main body radially and connects to the first channel, while the at least one second through hole penetrates the main body radially. The control sleeve and the main body together form a connecting space. When the control sleeve is in the first position, the connecting space simultaneously connects the at least one first through hole and the at least one second through hole. When the control sleeve is in the second position, the connecting space does not simultaneously connect the at least one first through hole and the at least one second through hole. The positioning mechanism is located outside the connecting space. A first anti-slip structure is provided on the control sleeve, and a second anti-slip structure is provided on the locking sleeve. The first anti-slip structure is different from the second anti-slip structure. The insertion space and the first channel are located on the same side of the main body. The first component and the second component are screwed together to form a single component. In the axial direction, the first component and the second component are screwed together to form a single component. The valve body is misaligned with the first positioning part; the valve body includes a bottom, a body and a head connected in sequence; the first elastic member is sleeved on the valve body and springs against the bottom and the valve seat; the head is located in the second space; the head is tapered in a direction away from the bottom; a second elastic member is sleeved on the second member and springs against the first member and the locking slide, so that the locking slide normally tends to move towards the locking position; the positioning mechanism further includes a first end face tooth and a second end face tooth; the first end face tooth is provided on the end face of the control slide, and the second end face tooth is provided on the end face of the positioning member; when the positioning member is in the third position, the first end face tooth and the second end face tooth abut against each other.

[0016] To achieve the above objectives, this utility model further provides a quick connector, comprising: a main body, a control sleeve, and a locking mechanism. The main body defines an axial direction, a radial direction, and a circumferential direction. The main body encloses a first channel and a second channel that are not interconnected in the axial direction, and has at least one first through hole and at least one second through hole. The first channel is for inserting a plug, and the second channel is for connecting to a pneumatic source. The at least one first through hole connects to the first channel in the radial direction, and the at least one second through hole connects to the second channel in the radial direction. The control sleeve is movable in the axial direction to a first position and a second position and is rotatably fitted onto the main body in the circumferential direction. The control sleeve and the main body together enclose a communicating space. When the control sleeve is in the first position, the communicating space simultaneously connects to the at least one first through hole and the at least one second through hole. When the control sleeve is in the second position, the communicating space does not simultaneously connect to the at least one first through hole and the at least one second through hole. The locking mechanism is located on the main body and includes at least one first stop, a locking sleeve, a stop member, a first elastic member, and at least one second stop. The at least one first stop is movably disposed on the main body radially. The locking sleeve is axially movable and sleeved on the main body in a locked position and a released position. When the locking sleeve is in the locked position, the at least one first stop can extend radially into the first channel to engage and position the tube plug. When the locking sleeve is in the released position, the at least one first stop can retract radially to release the tube plug. The stop member is movably accommodated in the first channel, and the first elastic member springs against the main body and the stop member to... The abutment normally blocks the at least one first stopper from extending into the first channel in the radial direction, preventing the locking sleeve from moving to the locked position. When the tube plug inserted into the first channel pushes against the abutment without blocking the at least one first stopper, the locking sleeve can move to the locked position. The at least one second stopper is movably disposed on the locking sleeve in the radial direction. When the locking sleeve is in the released position, the at least one second stopper blocks the control sleeve in the axial direction, preventing the control sleeve from moving to the first position. When the locking sleeve is in the locked position, the at least one second stopper does not block the control sleeve in the axial direction, allowing the control sleeve to move to the first position.

[0017] The quick connector further includes a positioning mechanism, which includes a first positioning part and a second positioning part. The first positioning part is disposed on the main body, and the second positioning part is disposed on the control slide. When the control slide is in the first position, the first positioning part and the second positioning part can be mutually blocked in the axial direction by rotating the control slide, thereby restricting the control slide to remain in the first position.

[0018] The quick connector further includes a positioning mechanism, which includes a positioning screw portion and a positioning member. The positioning screw portion is disposed on the main body, and the positioning member is movable along the axial direction to a third position and a fourth position and is rotatably sleeved on the main body along the circumferential direction. When the positioning member is driven to the third position, the positioning member and the positioning screw portion are screwed together and positioned, thereby the positioning member blocks the control sleeve in the axial direction, so that the control sleeve cannot move to the second position. When the positioning member is in the fourth position, the positioning member and the positioning screw portion are not screwed together and the positioning member can move in the axial direction, so that the control sleeve can move to the second position.

[0019] The beneficial effects of this utility model are: the quick connector obtained by this utility model can effectively improve the safety of use and increase the reliability of device operation, so as to protect the personal safety of users. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0021] Figure 2 for Figure 1 The exploded diagram.

[0022] Figure 3 This is a perspective view of a control sleeve according to an embodiment of the present invention.

[0023] Figure 4 This is a cross-sectional view of the control sleeve in the first position according to an embodiment of the present invention.

[0024] Figure 5 This is a cross-sectional view of the control sleeve in the second position according to an embodiment of the present invention.

[0025] Figure 6 This is a cross-sectional view of the locking sleeve in the release position according to an embodiment of the present invention.

[0026] Figure 7 This is an exploded view of another embodiment of the present invention.

[0027] Figure 8 This is a partial cross-sectional view of another embodiment of the present invention, showing the plug not inserted into the main body.

[0028] Figure 9 This is a partial cross-sectional view of the tube plug insertion body according to another embodiment of the present invention.

[0029] 1,1A: Main Body

[0030] 11: Axial

[0031] 12: Radial

[0032] 13: Zhou Xiang

[0033] 14: First component

[0034] 15: Second component

[0035] 16: First through hole

[0036] 17: Second through hole

[0037] 21: First Channel

[0038] 211: First Space

[0039] 212: The Second Space

[0040] 22: Second Channel

[0041] 3: Valve core assembly

[0042] 31: Valve seat

[0043] 311: Valve port

[0044] 32: Valve body

[0045] 321: Bottom

[0046] 322: Body

[0047] 323: Head

[0048] 34, 34A: First elastic element

[0049] 35, 35A: Abutment parts

[0050] 4,4A: Control sleeve

[0051] 5: Positioning mechanism

[0052] 51: First Positioning Section

[0053] 52: Second Positioning Unit

[0054] 53: Positioning screw joint

[0055] 54: Positioning component

[0056] 55: First end face tooth

[0057] 56: Second end face tooth

[0058] 6,6A: Locking mechanism

[0059] 61: First stop component

[0060] 62, 62A: Locking Slide

[0061] 63: Second elastic element

[0062] 64: Second stop

[0063] 71: Plug-in space

[0064] 72: Connected Space

[0065] 81: First anti-slip structure

[0066] 82: Second anti-slip structure

[0067] 9: Pipe plug Detailed Implementation

[0068] The following examples illustrate possible implementations of this utility model, but are not intended to limit the scope of protection of this utility model. The prefixes "a" or "at least one" before the terms mentioned herein are not intended to limit the quantity. Depending on the requirements, there may also be "multiple" items. This variation in quantity is also within the scope of protection, and is therefore stated in advance.

[0069] Please refer to Figures 1 to 6 The illustration shows an embodiment of the present invention. The quick connector of the present invention includes: a main body 1, a valve core assembly 3, a control sleeve 4, and a locking mechanism 6.

[0070] The main body 1 is defined by an axial direction 11, a radial direction 12, and a circumferential direction 13. The main body 1 includes a first channel 21 and a second channel 22 that can be selectively connected. The first channel 21 is for insertion of a pipe plug 9, and the second channel 22 is for connection to a pneumatic source. The valve core assembly 3 is normally housed in the first channel 21 in a closed state, and the first channel 21 is blocked into a first space 211 and a second space 212. The second space 212 is for insertion and connection of the pipe plug 9. When the pipe plug 9 is inserted into the second space 212 to a predetermined position, the valve core assembly 3 can be forced to switch to an open state, thereby connecting the first space 211 to the second space 212. This is the first connection step.

[0071] The control sleeve 4 can move along the axial direction 11 to a first position and a second position and can be rotatably fitted onto the main body 1 along the circumferential direction 13. When the control sleeve 4 is in the first position, the first space 211 and the second channel 22 are interconnected. When the control sleeve 4 is in the second position, the first space 211 and the second channel 22 are not interconnected. As can be seen from the above, the operation of moving the control sleeve 4 to the first position is the second connection step. The special design of this quick connector, which requires multiple steps to operate different components to achieve connection, is to prevent the premature flow of high-pressure fluid, so as to effectively avoid the pipe plug 9 being ejected by pressure, premature operation of the equipment, and injury to the operator or damage to the equipment.

[0072] The positioning mechanism 5 includes a first positioning part 51 and a second positioning part 52. The first positioning part 51 is located on the main body 1, and the second positioning part 52 is located on the control sleeve 4. When the control sleeve 4 is in the first position, rotating the control sleeve 4 can cause the first positioning part 51 and the second positioning part 52 to block each other along the axial direction 11, thereby restricting the control sleeve 4 to remain in the first position. By performing a "rotation locking" operation on the control sleeve 4, the control sleeve 4 can be quickly positioned to maintain stable airflow and prevent accidental movement that could cause the machine to stop operating. In this embodiment, the first positioning part 51 is an externally threaded section, and the second positioning part 52 is an internally threaded section. The control sleeve 4 uses a helical movement to connect the first positioning part 51 and the second positioning part 52 to each other. The helical structure has excellent connection stability and reliability, and can effectively resist unexpected external force operations.

[0073] Preferably, the positioning mechanism 5 further includes a positioning screw portion 53 and a positioning member 54. The positioning screw portion 53 is disposed on the main body 1, and the positioning member 54 is movable along the axial direction 11 to a third position and a fourth position and is rotatably sleeved on the main body 1 along the circumferential direction 13. When the positioning member 54 is in the third position, the positioning member 54 and the positioning screw portion 53 are screwed together for positioning, thereby the positioning member 54 blocks the control sleeve 4 along the axial direction 11, preventing the control sleeve 4 from moving to the second position, thus improving safety. It is understood that when the positioning member 54 is in the fourth position, the positioning member 54 and the positioning screw portion 53 are not screwed together for positioning, and the positioning member 54 can move along the axial direction 11, allowing the control sleeve 4 to move to the second position.

[0074] More preferably, the positioning mechanism 5 further includes a first end face tooth 55 and a second end face tooth 56. The first end face tooth 55 is disposed on the end face of the control sleeve 4, and the second end face tooth 56 is disposed on the end face of the positioning member 54. When the positioning member 54 is in the third position, the first end face tooth 55 and the second end face tooth 56 abut against each other to increase friction and prevent relative sliding, ensuring that the control sleeve 4 will not rotate relative to each other, so that the first positioning part 51 and the second positioning part 52 remain in the engaged state.

[0075] The locking mechanism 6 is disposed on the main body 1. The locking mechanism 6 includes at least one first stop 61 and a locking sleeve 62. The at least one first stop 61 is movably disposed on the main body 1 along the radial direction 12. The locking sleeve 62 is movable along the axial direction 11 and is sleeved on the main body 1 in a locked position and a released position. When the locking sleeve 62 is in the locked position, the at least one first stop 61 can extend into the second space 212 along the radial direction 12 to engage and position the pipe plug 9. When the locking sleeve 62 is in the released position, the at least one first stop 61 can retract along the radial direction 12 to release the pipe plug 9. The locking mechanism 6 can effectively connect and position the pipe plug 9 to the main body 1 to prevent the pipe plug 9 from being dislodged by fluid pressure instead of as intended.

[0076] Preferably, a second elastic member 63 is sleeved on the second component 15 and springs against the first component 14 and the locking sleeve 62, so that the locking sleeve 62 normally tends to move toward the locking position, thus having the function of automatic locking. Furthermore, the second elastic member 63 can provide force to the locking sleeve 62 to resist unexpected external forces and prevent the plug 9 from being accidentally released.

[0077] It is worth mentioning that the control sleeve 4 and the main body 1 jointly define an insertion space 71. The insertion space 71 and the first channel 21 are located on the same side of the main body 1. A portion of the locking sleeve 62 is accommodated in the insertion space 71, and another portion of the locking sleeve 62 protrudes from the control sleeve 4. This structural configuration, in which the control sleeve 4 covers a portion of the locking sleeve 62, effectively prevents accidental contact from causing the locking sleeve 62 to slip, thereby improving the stability and reliability of the component connection.

[0078] Preferably, when the control sleeve 4 is in the first position, a portion of the control sleeve 4 is located on the moving path of the locking sleeve 62 along the axial direction 11. Thus, the control sleeve 4 can limit the locking sleeve 62 to remain in the locked position, forming a double protection to avoid accidental dislodgement of the pipe plug 9 due to misinterpretation of the lock when fluid is flowing, thus enhancing the redundant protection design of the overall safety mechanism.

[0079] Alternatively, a first anti-slip structure 81 is provided on the control sleeve 4 to improve grip friction and operating feel; similarly, a second anti-slip structure 82 is provided on the locking sleeve 62. In this embodiment, the first anti-slip structure 81 differs from the second anti-slip structure 82 to produce different operating / touch sensations, allowing the user to clearly distinguish between the two different components during actual operation and avoiding misoperation.

[0080] The main body 1 includes a first component 14 and a second component 15. The second component 15 is assembled to the first component 14 to jointly form the first channel 21. The first positioning part 51 is disposed on the first component 14, and the locking mechanism 6 is disposed on the second component 15. The assembly method of dividing the main body 1 into two components not only facilitates processing and maintenance, but also avoids stress concentration that could cause leakage or deformation. In this embodiment, the first component 14 and the second component 15 are screwed together to form a single component. Furthermore, along the axial direction 11, the screwed joint between the first component 14 and the second component 15 is misaligned with the first positioning part 51 to disperse the internal force path and improve the overall structural strength.

[0081] The valve core assembly 3 includes a valve seat 31, a valve body 32, and a first elastic member 34. The first member 14 and the second member 15 together clamp and position the valve seat 31. The valve seat 31 surrounds a valve port 311, which connects the first space 211 and the second space 212. The valve body 32 is movably accommodated in the first channel 21 along the axial direction 11 to selectively block the valve port 311. The valve body 32 can be driven by the pipe plug 9 without blocking the valve port 311. The first elastic member 34 is clamped between the valve body 32 and the valve seat 31 so that the valve body 32 normally blocks the valve port 311, and can drive the valve body 32 to quickly close the valve port 311 when the pipe plug 9 is disconnected, preventing residual gas from being ejected and providing automatic flow interruption and protection. In this embodiment, the valve body 32 includes a bottom 321, a body 322 and a head 323 connected in sequence. The first elastic member 34 is sleeved on the valve body 32 and springs against the bottom 321 and the valve seat 31. The head 323 is located in the second space 212. The head 323 is tapered into a cone shape in the direction away from the bottom 321.

[0082] Preferably, the locking mechanism 6 further includes a stop member 35, which is abutted against by the pipe plug 9 and movably accommodated in the second space 212. A portion of the valve body 32 is located between the stop member 35 and the valve seat 31. When the valve body 32 blocks the valve port 311, the stop member 35 blocks the at least one first stop member 61 in the radial direction 12, preventing the at least one first stop member 61 from extending into the second space 212. When the valve body 32 does not block the valve port 311, the stop member 35 does not block the at least one first stop member 61 in the radial direction 12, allowing the at least one first stop member 61 to extend into the second space 212. The movement of the at least one first stop 61 can be reliably controlled by the abutment 35, and the abutment 35 can be made of a relatively hard material, so as to withstand the push from the plug 9 in the axial direction 11 and the abutment of the at least one first stop 61 in the radial direction 12.

[0083] The first channel 21 and the second channel 22 are not directly connected along the axial direction 11. The main body 1 further includes at least one first through hole 16 and at least one second through hole 17. The at least one first through hole 16 penetrates the main body 1 along the radial direction 12 and connects to the first channel 21. The at least one second through hole 17 penetrates the main body 1 along the radial direction 12 and connects to the second channel 22. The control sleeve 4 and the main body 1 together form a connecting space 72. When the control sleeve 4 is in the first position, the connecting space 72 simultaneously connects the at least one first through hole 16 and the at least one second through hole 17. When the control sleeve 4 is in the second position, the connecting space 72 does not simultaneously connect the at least one first through hole 16 and the at least one second through hole 17. In this embodiment, the positioning mechanism 5 is located outside the connecting space 72 to avoid the airflow pressure directly acting on the positioning mechanism 5, preventing jamming or loosening during operation, thereby ensuring high stability and durability during long-term use.

[0084] Please consider further. Figures 7 to 9 Another embodiment differs from this embodiment mainly in the linkage between the locking mechanism 6A and the control sleeve 4A.

[0085] Furthermore, the locking mechanism 6A also includes at least one second stop 64, and the abutment 35A is movably accommodated in the first channel 21. The first elastic member 34A springs against the body 1A and the abutment 35A, so that the abutment 35A normally blocks the at least one first stop 61 from extending into the first channel 21 in the radial direction 12, so that the locking sleeve 62A cannot move to the locking position. When the tube plug 9 inserted into the first channel 21 pushes the abutment 35A to move without blocking the at least one first stop 61, the locking sleeve 62A can move to the locking position.

[0086] Furthermore, the at least one second stop 64 is movably disposed on the locking sleeve 62A along the radial direction 12. When the locking sleeve 62A is in the released position, the at least one second stop 64 blocks the control sleeve 4A along the axial direction 11, preventing the control sleeve 4A from moving to the first position. This ensures that the user cannot arbitrarily move the control sleeve 4A before the connector 9 is inserted, thereby improving safety. Conversely, when the locking sleeve 62A is in the locked position, the at least one second stop 64 does not block the control sleeve 4A along the axial direction 11, allowing the control sleeve 4A to move to the first position.

Claims

1. A quick connector, characterized in that: include: A main body is defined with an axial direction, a radial direction and a circumferential direction, including a first channel and a second channel that can be selectively connected, the first channel for plug insertion and the second channel for connection to a pneumatic pressure source; A valve core assembly is normally housed in the first channel in a closed state, and blocks the first channel into a first space and a second space. The second space is for the plug to be inserted and connected. When the plug is inserted into the second space to a predetermined position, the valve core assembly can be forced to switch to the open state, thereby connecting the first space to the second space. A control sleeve is movable along the axial direction to a first position and a second position and is rotatably fitted onto the body in the circumferential direction. When the control sleeve is in the first position, the first space and the second channel are interconnected. When the control sleeve is in the second position, the first space and the second channel are not interconnected. and A locking mechanism is provided on the main body and includes at least one first stop and a locking sleeve. The at least one first stop is movably disposed on the main body in the radial direction. The locking sleeve is axially movable and sleeved on the main body in a locked position and a released position. When the locking sleeve is in the locked position, the at least one first stop can extend into the second space in the radial direction to lock and position the tube plug. When the locking sleeve is in the released position, the at least one first stop can retract in the radial direction to release the tube plug.

2. The quick connector as described in claim 1, characterized in that: It also includes a positioning mechanism, which includes a first positioning part and a second positioning part. The first positioning part is disposed on the main body, and the second positioning part is disposed on the control slide. When the control slide is in the first position, by rotating the control slide, the first positioning part and the second positioning part can be made to block each other in the axial direction, thereby restricting the control slide to remain in the first position.

3. The quick connector as described in claim 1, characterized in that: The control sleeve and the main body define a joint space, a portion of the locking sleeve is accommodated in the joint space, and another portion of the locking sleeve protrudes from the control sleeve.

4. The quick connector as described in claim 1, characterized in that: When the control sleeve is in the first position, a portion of the control sleeve is axially positioned and located on the movement path of the locking sleeve, thereby restricting the locking sleeve to remain in the locked position.

5. The quick connector as described in claim 2, characterized in that: The main body includes a first component and a second component, the second component being assembled to the first component to jointly form the first channel, the first positioning part being disposed on the first component, and the locking mechanism being disposed on the second component.

6. The quick connector as described in claim 5, characterized in that: The valve core assembly includes a valve seat, a valve body, and a first elastic member. The first member and the second member together clamp and position the valve seat. The valve seat surrounds a valve port that connects the first space and the second space. The valve body is movably accommodated in the first channel along the axial direction to selectively block the valve port. The valve body can be driven by the plug and not block the valve port. The first elastic member is clamped between the valve body and the valve seat so that the valve body normally blocks the valve port.

7. The quick connector as described in claim 6, characterized in that: The locking mechanism further includes a stop member for the pipe plug to abut against and movably accommodated in the second space, with a portion of the valve body located between the stop member and the valve seat; wherein, when the valve body blocks the valve port, the stop member blocks the at least one first stop member in the radial direction, preventing the at least one first stop member from extending into the second space; when the valve body does not block the valve port, the stop member does not block the at least one first stop member in the radial direction, allowing the at least one first stop member to extend into the second space.

8. The quick connector as described in claim 1, characterized in that: The system also includes a positioning mechanism comprising a positioning screw portion and a positioning member. The positioning screw portion is disposed on the main body, and the positioning member is movable along the axial direction to a third position and a fourth position and is rotatably sleeved on the main body in the circumferential direction. When the positioning member is in the third position, the positioning member and the positioning screw portion are screwed together for positioning, thereby the positioning member blocks the control sleeve in the axial direction, preventing the control sleeve from moving to the second position. When the positioning member is in the fourth position, the positioning member and the positioning screw portion are not screwed together for positioning, and the positioning member can move in the axial direction, allowing the control sleeve to move to the second position.

9. The quick coupling as claimed in any one of claims 5 to 7, characterized in that: The first positioning part is an external thread section, and the second positioning part is an internal thread section. The control sleeve connects the first positioning part and the second positioning part to each other through a helical movement.

10. The quick connector as claimed in claim 7, characterized in that: The control sleeve and the main body define a insertion space. A portion of the locking sleeve is accommodated within this insertion space, while another portion protrudes from the control sleeve. When the control sleeve is in the first position, a portion of the control sleeve is axially positioned along the movement path of the locking sleeve, thus restricting the locking sleeve to remain in the locked position. The positioning mechanism further includes a positioning screw portion and a positioning member. The positioning screw portion is located on the main body, and the positioning member is axially movable between a third position and a fourth position and rotatably fitted onto the main body circumferentially. When the positioning member is in the third position... The positioning member and the positioning screw connection are screwed together for positioning, thereby blocking the control sleeve in the axial direction and preventing the control sleeve from moving to the second position. When the positioning member is in the fourth position, the positioning member and the positioning screw connection are not screwed together, and the positioning member can move in the axial direction, allowing the control sleeve to move to the second position. The first positioning part is an external thread section, and the second positioning part is an internal thread section. The control sleeve screws the first positioning part and the second positioning part together through a helical movement. The first channel and the second channel are not directly connected in the axial direction. The main body also includes at least one first through hole and at least one second through hole. The at least one first through hole penetrates the main body radially and connects to the first channel; the at least one second through hole penetrates the main body radially and connects to the second channel; the control sleeve and the main body together form a communicating space; when the control sleeve is in the first position, the communicating space simultaneously connects the at least one first through hole and the at least one second through hole; when the control sleeve is in the second position, the communicating space does not simultaneously connect the at least one first through hole and the at least one second through hole; the positioning mechanism is located outside the communicating space; a first anti-slip structure is located on the control sleeve; a second anti-slip structure is located on the locking sleeve; the first anti-slip structure is different from the second anti-slip structure. The valve body has a sliding structure; the insertion space and the first channel are located on the same side of the main body; the first component and the second component are screwed together to form a single component; in the axial direction, the screwed connection between the first component and the second component is misaligned with the first positioning part; the valve body includes a bottom, a body and a head connected in sequence; the first elastic member is sleeved on the valve body and springs against the bottom and the valve seat; the head is located in the second space; the head is tapered in a direction away from the bottom; a second elastic member is sleeved on the second component and springs against the first component and the locking slide, so that the locking slide normally tends to move towards the locking position; The positioning mechanism further includes a first end face tooth and a second end face tooth. The first end face tooth is disposed on the end face of the control sleeve, and the second end face tooth is disposed on the end face of the positioning member. When the positioning member is in the third position, the first end face tooth and the second end face tooth abut against each other.

11. A quick connector, characterized in that: include: A main body is defined with an axial direction, a radial direction and a circumferential direction, and encloses a first channel and a second channel that are not connected in the axial direction, and is provided with at least a first through hole and at least a second through hole. The first channel is for inserting a pipe plug, and the second channel is for connecting to a pneumatic source. The at least one first through hole is connected to the first channel in the radial direction, and the at least one second through hole is connected to the second channel in the radial direction. A control sleeve is movable along the axial direction to a first position and a second position and is rotatably fitted onto the body along the circumferential direction. The control sleeve and the body together form a communicating space. When the control sleeve is in the first position, the communicating space simultaneously connects the at least one first through hole and the at least one second through hole. When the control sleeve is in the second position, the communicating space does not simultaneously connect the at least one first through hole and the at least one second through hole. and A locking mechanism, disposed on the main body, includes at least one first stop, a locking sleeve, a stop member, a first elastic member, and at least one second stop. The at least one first stop is movably disposed on the main body radially. The locking sleeve is axially movable and sleeved on the main body in a locked position and a released position. When the locking sleeve is in the locked position, the at least one first stop can extend radially into the first channel to engage and position the tube plug. When the locking sleeve is in the released position, the at least one first stop can retract radially to release the tube plug. The stop member is movably accommodated in the first channel, and the first elastic member springs against the main body and the stop member to prevent the tube plug from being engaged. The abutment normally blocks the at least one first stopper from extending into the first channel in the radial direction, preventing the locking sleeve from moving to the locked position. When the tube plug inserted into the first channel pushes against the abutment without blocking the at least one first stopper, the locking sleeve can move to the locked position. The at least one second stopper is movably disposed on the locking sleeve in the radial direction. When the locking sleeve is in the released position, the at least one second stopper blocks the control sleeve in the axial direction, preventing the control sleeve from moving to the first position. When the locking sleeve is in the locked position, the at least one second stopper does not block the control sleeve in the axial direction, allowing the control sleeve to move to the first position.

12. The quick connector as claimed in claim 11, characterized in that: It also includes a positioning mechanism, which includes a first positioning part and a second positioning part. The first positioning part is disposed on the main body, and the second positioning part is disposed on the control slide sleeve. When the control slide sleeve is in the first position, by rotating the control slide sleeve, the first positioning part and the second positioning part can be made to block each other in the axial direction, thereby restricting the control slide sleeve to remain in the first position.

13. The quick connector as claimed in claim 11, characterized in that: The system also includes a positioning mechanism comprising a positioning screw portion and a positioning member. The positioning screw portion is disposed on the main body, and the positioning member is movable along the axial direction to a third position and a fourth position and is rotatably sleeved on the main body in the circumferential direction. When the positioning member is driven to the third position, the positioning member and the positioning screw portion are screwed together and positioned, thereby the positioning member blocks the control sleeve in the axial direction, preventing the control sleeve from moving to the second position. When the positioning member is in the fourth position, the positioning member and the positioning screw portion are not screwed together and the positioning member can move in the axial direction, allowing the control sleeve to move to the second position.

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