An internal thread quick connector with a rotatable handle structure

Abstract

This invention discloses an internally threaded quick connector with a rotatable handle, belonging to the field of connector technology, and solves the problems of fixed handle direction, easy interference, cumbersome center rod replacement, and insufficient sealing performance of existing connectors. The connector includes a main body assembly, a quick-connect mechanism, and a rotary locking mechanism. The main body assembly includes a mating end body, an adapter body, and a tailstock connected in sequence. The adapter body and tailstock are rotatably connected, and the tailstock has a pressable handle. The quick-connect mechanism is located within the main body assembly and is linked to the handle via a transmission mechanism. It includes a center rod assembly, teeth, and an elastic reset element to achieve rapid pipeline connection. The rotary locking mechanism includes a locking button assembly and a toothed structure of the adapter body, enabling 360° rotation and locking of the handle. This invention avoids handle operation interference, enables rapid center rod replacement, ensures reliable sealing through multiple sealing structures, has a stable structure, is easy to operate, and is suitable for various complex pipeline connection conditions.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to an internal thread quick connector with a rotatable handle structure. Background Technology

[0002] In the field of pipeline connections, threaded connectors are widely used in various industrial and civil applications due to their simple structure and reliable connection. Traditional threaded connectors use a fixed thread connection method for the front and rear bodies, and the handle direction is fixed after connection, making it impossible to adjust the handle angle according to the actual installation space and working conditions.

[0003] In practical applications, especially in scenarios with limited space and complex pipeline layouts, handles with fixed orientations are prone to interfering with surrounding pipelines and equipment, making installation and disassembly difficult. This not only reduces operational efficiency but may also cause pipeline twisting, interface damage, or even safety hazards such as media leakage and personnel injury due to forced operation.

[0004] Meanwhile, while some existing quick connectors can achieve rapid connection, they suffer from problems such as cumbersome center rod replacement, insufficient sealing performance, and poor rotational flexibility, failing to balance ease of operation, connection stability, and safety of use. For example, some connectors use bolts to fix the center rod, requiring tools for disassembly during replacement, resulting in low efficiency in replacing spare parts; some rotary connectors lack reliable locking mechanisms, failing to securely fix the connection after rotation, thus affecting connection stability.

[0005] In addition, there are some rotary connectors in the existing technology, such as the quick connection device with a double locking mechanism disclosed in Chinese utility model patent CN208331520U. Although it has a double locking function, it does not involve a rotatable handle structure design, and still cannot solve the technical pain point of handle interference.

[0006] Therefore, in view of the shortcomings of existing connectors such as fixed handle direction, inconvenient operation, and cumbersome center rod replacement, developing a quick connector that can achieve 360° rotation and locking of the handle, quick replacement of the center rod, and reliable connection sealing has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] To address the problems of traditional threaded connectors in existing technologies, such as the single handle direction, susceptibility to interference, cumbersome center rod replacement, low operational efficiency, and insufficient sealing performance, this invention provides a quick-connect connector with a rotatable internal thread. Through optimized structural design, the handle can rotate 360° and be locked at any desired angle, avoiding operational interference. At the same time, it enables quick replacement of the center rod, improving the efficiency of spare parts replacement, and taking into account connection stability, sealing, and operational safety, making it suitable for various complex working conditions.

[0008] To solve the above technical problems, the present invention provides the following solution: An internal thread quick connector with a rotatable handle structure, comprising:

[0009] The main body assembly includes a docking end body, an adapter body, and a tailstock connected in sequence. The docking end body is fixedly connected to the adapter body, and the adapter body is rotatably connected to the tailstock. The tailstock is provided with a pressable handle.

[0010] A quick-connect mechanism is located within the main body assembly and is connected to the handle via a transmission mechanism. This quick-connect mechanism includes a central rod assembly, claws, and an elastic reset member. The central rod assembly is in abutting linkage with the handle. The claws are multiple pieces evenly distributed on the outside of the central rod assembly, with the outer end of each claw extending beyond the main body of the docking end. The elastic reset member is sleeved on the central rod assembly and is used to drive the central rod assembly to reset. When the handle is pressed, the central rod assembly moves in the direction of the handle's pushing force, causing the multiple claws to merge. When the handle is released, the elastic reset member drives the central rod assembly to reset, and the claws open and contact the step of the main body of the docking end.

[0011] A rotary locking mechanism includes a locking button assembly and a toothed structure located at one end of the adapter body. The locking button assembly is located on the tailstock and has a resettable locking button. One end of the locking button extends into the area of ​​the toothed structure. Pressing the locking button prevents it from contacting the toothed structure, thus forming an unlocking mechanism. Releasing the locking button causes one end of the locking button to engage with the toothed structure, thus preventing the tailstock from rotating.

[0012] Furthermore, the first end of the docking end body and the adapter body are fixedly connected by threads;

[0013] The second end of the adapter body and the tail seat are connected by a disconnected third retaining ring after being inserted into each other. The tail seat has a groove on the outer wall of the connection end with the adapter body. The third retaining ring is engaged in the groove. The adapter body is limited by the outward convex part of the third retaining ring. The adapter body and the tail seat can rotate relative to each other.

[0014] Furthermore, the tailstock is provided with a receiving cavity, a through hole, and a mounting slot for the locking button assembly.

[0015] Furthermore, the center rod assembly includes:

[0016] A center rod fixing block is fixed in the accommodating cavity. The center rod fixing block is provided with a side-entry T-slot and a through hole provided at the baffle wall of the T-slot. The through hole is provided with a step.

[0017] The center rod has a thick section and thin sections connected to both ends of the thick section. A T-shaped post is connected to the outer end of the thin section on the shorter side, and the T-shaped post slides into the T-shaped groove.

[0018] A step-positioning ball is inserted into the through hole, leaving a portion of the area to block the T-shaped post;

[0019] The first top column has an outer step and is fitted around the central rod;

[0020] The second top post is fitted over the center rod and threadedly connected to the first top post. The second top post has a claw end mounting cavity.

[0021] Furthermore, the docking end body has a stepped groove inside the connection end with the adapter body, and the stepped groove is provided with a return gasket, which is sleeved on the outside of the first top post.

[0022] The elastic reset component is a third spring, one end of which abuts against the return pad, and the other end of which abuts against the outer step of the first top post, forming a reset structure.

[0023] Furthermore, a first sealing structure is provided at the connection between the first top post and the second top post. The first sealing structure consists of a first retaining ring and a second sealing ring between the first top post and the second top post. The first retaining ring and the second sealing ring are arranged adjacent to each other and are sleeved on the thick section of the central rod.

[0024] A second sealing structure is provided between the second top post and the docking end body. The second sealing structure is a fourth sealing ring embedded in the outer concave ring of the second top post, and the fourth sealing ring abuts against the inner wall of the docking end body.

[0025] The outer concave ring of the second top post is also fitted with a second retaining ring, and the second retaining ring and the fourth sealing ring are arranged adjacent to each other.

[0026] Furthermore, the claw end mounting cavity is provided with a spring placement cavity, a spring cap movable cavity and a claw end snap-fit ​​cavity from the inside to the outside;

[0027] The spring placement cavity is provided with a fourth spring;

[0028] The movable cavity of the spring cap is provided with a spring cap, one end of which abuts against the fourth spring;

[0029] The claw end engaging cavity engages with the inner end of each claw, and the other end of the spring cap abuts against the inner step of the inner end of each claw.

[0030] Furthermore, each claw tooth has an arc groove at its outer end, and each arc groove is within the same circumference. The third sealing ring is fitted around each arc groove.

[0031] A third sealing structure is provided at the connection between the docking end body and the adapter body. The third sealing structure is a first sealing ring provided at the connection between the docking end body and the adapter body.

[0032] Furthermore, the central rod fixing block is also provided with a shaft hole;

[0033] The handle has a curved section, the end of which is hinged to the tailstock by a cylindrical pin, and a pin groove is provided at the inner corner.

[0034] The transmission mechanism includes a handle hinge and a hinge pin. The first end of the handle hinge is hinged to the pin groove, and the second end is hinged to the first end of the hinge pin. The hinge pin passes through the shaft hole, and its second end abuts against the first top post.

[0035] Furthermore, the locking button assembly is mounted in the mounting slot, and the locking button assembly includes:

[0036] The button limit screw has its threaded section connected to the tailstock.

[0037] A locking button is fitted onto the unthreaded section of the button limiting screw and is limited by the cap of the button limiting screw. The portion of the button that extends into the area of ​​the concave tooth structure has an arc-shaped protrusion. The concave tooth structure consists of multiple arc-shaped grooves that mate with the arc-shaped protrusion on the inner side of one end of the adapter body.

[0038] A first spring is fitted onto the unthreaded section of the button limiting screw and abuts against the locking button.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. This invention enables the handle to rotate 360° and lock, solving the problem of operational interference: Through the rotatable connection between the adapter body and the tailstock, and in conjunction with the rotation locking mechanism, the handle can rotate freely 360° and be locked at any desired angle, effectively avoiding interference between the handle and surrounding pipes and equipment, adapting to complex working conditions with limited space and complex pipe layout, and improving operational convenience.

[0041] 2. The invention enables quick replacement of the center rod, improving maintenance efficiency: The center rod engages with the T-slot of the center rod fixing block via a T-shaped post, combined with the positioning function of the step positioning ball, allowing for quick disassembly and replacement of the center rod without the need for tools. This significantly improves the efficiency of spare parts replacement and meets emergency maintenance needs.

[0042] 3. The invention features a multi-seal structure for reliable sealing: The multi-seal structure, consisting of a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, and multiple retaining rings, seals the connection points of the main components, the connection points of the top column, and the interface between the claw and the pipeline, effectively preventing media leakage and improving safety and reliability in use.

[0043] 4. The present invention has a stable structure and is easy to operate: By optimizing the design of the transmission mechanism, pressing the handle can realize the merging and opening of the claws and teeth, which is easy to operate; the rotation locking mechanism adopts a spring reset structure, which is reliable in locking, avoids the tailstock from rotating, and ensures connection stability; the connection method of each component is reasonable, the overall structure is compact and stable, and has a long service life. Attached Figure Description

[0044] Figure 1 This is a perspective view of the internal thread quick connector of the present invention.

[0045] Figure 2 This is a cross-sectional view of the internal thread quick connector of the present invention.

[0046] Figure 3 This is a structural diagram of the present invention after removing the main components.

[0047] Figure 4 This is a perspective view of the internal structure of the internal thread quick connector of the present invention.

[0048] Figure 5 This is a structural diagram of the adapter body of the present invention.

[0049] Figure 6 This is an installation structure diagram of the step positioning ball and rotation locking mechanism of the present invention.

[0050] Figure 7 This is a structural diagram of the locking button of the present invention.

[0051] Figure 8 This is a structural diagram of the tailstock of the present invention.

[0052] Figure 9 This is a structural diagram of the central rod fixing block of the present invention.

[0053] Figure 10 This is a structural diagram of the central rod of the present invention.

[0054] In the attached diagram, the markings are: 3-step positioning ball, 4-pin groove, 5-cylindrical pin, 6-handle hinge, 7-claw, 8-center rod, 82-thick section, 83-T-shaped post, 9-second top post, 10-first top post, 11-return washer, 12-hinge pin, 13-spring cap, 14-handle, 15-connecting end body, 16-adapter body, 161-concave tooth structure, 17-tailstock, 171-locking button assembly mounting slot, 172-accommodating cavity, 17 3-Through hole, 174-Groove, 18-Center rod fixing block, 181-Shaft hole, 182-T-slot, 183-Through hole, 19-Locking button, 191-Arc-shaped protrusion, 20-Button limit screw, 21-First sealing ring, 22-Second sealing ring, 23-Third sealing ring, 24-Fourth sealing ring, 25-First retaining ring, 26-Second retaining ring, 27-First spring, 28-Third retaining ring, 29-Third spring, 30-Fourth spring. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Obviously, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0057] Example 1: The specific structure of the present invention is as follows:

[0058] Please refer to the appendix. Figure 1-10 The present invention provides an internal thread quick connector with a rotatable handle structure, comprising:

[0059] The main body assembly includes a docking end body 15, a transition body 16, and a tail seat 17 connected in sequence. The docking end body 15 is fixedly connected to the transition body 16, and the transition body 16 is rotatably connected to the tail seat 17. The tail seat 17 is provided with a pressable handle 14.

[0060] A quick-connect mechanism is located within the main body assembly and is connected to the handle 14 via a transmission mechanism. This quick-connect mechanism includes a central rod assembly, claw teeth 7, and an elastic reset member. The central rod assembly is in abutting linkage with the handle 14. The claw teeth 7 are arranged in multiple pieces and evenly distributed on the outside of the central rod assembly, with the outer end of each claw tooth 7 extending beyond the docking end body 15. The elastic reset member is sleeved on the central rod assembly and is used to drive the central rod assembly to reset. When the handle is pressed, the central rod assembly moves in the direction of the handle's pushing force, causing the multiple claw teeth 7 to merge. When the handle is released, the elastic reset member drives the central rod assembly to reset, and the claw teeth 7 open and contact the step of the docking end body.

[0061] A rotary locking mechanism includes a locking button assembly and a toothed structure 161 located at one end of the adapter body 16. The locking button assembly is located on the tailstock 17 and has a resettable locking button 19. One end of the locking button 19 extends into the area of ​​the toothed structure 161. Pressing the locking button 19 prevents it from contacting the toothed structure 161, thus forming an unlocking structure. Releasing the locking button 19 allows the reset structure of the locking button assembly to lock one end of the locking button 19 into the toothed structure 161, thus preventing the tailstock 17 from rotating.

[0062] The first ends of the docking end body 15 and the adapter body 16 are threadedly connected and fixed.

[0063] The second end of the adapter body 16 and the tail seat 17 are connected by a disconnected third retaining ring 28 after being inserted into each other. The tail seat 17 has a groove 174 on the outer wall of the connection end with the adapter body 16. The third retaining ring 28 is engaged in the groove 174. The adapter body 16 is limited by the outward protrusion of the third retaining ring 28. The adapter body 16 and the tail seat 17 can rotate relative to each other.

[0064] The tailstock 17 is provided with a receiving cavity 172, a through hole 173 and a locking button assembly mounting slot 171.

[0065] The center rod assembly includes:

[0066] A center rod fixing block 18 is fixed to the accommodating cavity 172. The center rod fixing block 18 is provided with a side-entry T-shaped groove 182 and a through hole 183 provided at the baffle of the T-shaped groove 182. The through hole 183 is provided with a step.

[0067] The center rod 8 has a thick section 82 and thin sections connected to both ends of the thick section. The outer end of the thin section on the shorter side is connected to a T-shaped post 83, which slides into the T-shaped groove 182.

[0068] The step positioning ball 3 is inserted into the through hole 183 and leaves a part of the area to block the T-shaped column 83;

[0069] The first top post 10 has an outer step and is fitted around the central rod 8;

[0070] The second top post 9 is sleeved on the outside of the central rod 8 and threadedly connected to the first top post 10. The second top post 9 has a claw end mounting cavity.

[0071] The docking end body 15 has a stepped groove inside the connection end with the adapter body 16. The stepped groove is provided with a return gasket 11 and the return gasket 11 is sleeved on the outside of the first top post 10.

[0072] The elastic reset component is a third spring 29, one end of which abuts against the return pad 11, and the other end of which abuts against the outer step of the first top post 10, forming a reset structure.

[0073] A first sealing structure is provided at the connection between the first top post 10 and the second top post 9. The first sealing structure is provided with a first retaining ring 25 and a second sealing ring 22 between the first top post 10 and the second top post 9. The first retaining ring 25 and the second sealing ring 22 are arranged adjacent to each other and are sleeved on the thick section of the center rod 8.

[0074] A second sealing structure is provided between the second top post 9 and the docking end body 15. The second sealing structure is a fourth sealing ring 24 embedded in the outer concave ring of the second top post 9. The fourth sealing ring 24 abuts against the inner wall of the docking end body 15.

[0075] The outer concave ring of the second top post 9 is also fitted with a second retaining ring 26, and the second retaining ring 26 and the fourth sealing ring 24 are arranged adjacent to each other.

[0076] The claw end mounting cavity is provided from the inside out with a spring placement cavity, a spring cap movable cavity, and a claw end snap-fit ​​cavity;

[0077] The spring placement cavity is provided with a fourth spring 30;

[0078] The movable cavity of the spring cap is provided with a spring cap 13, one end of which abuts against the fourth spring 30;

[0079] The claw end engaging cavity engages with the inner end of each claw 7, and the other end of the spring cap 13 abuts against the inner step of the inner end of each claw 7.

[0080] Each claw 7 has an arc groove at its outer end, and each arc groove is in the same circumference. The third sealing ring 23 is fitted onto each arc groove.

[0081] A third sealing structure is provided at the connection between the docking end body 15 and the adapter body 16. The third sealing structure is a first sealing ring 21 provided at the connection between the docking end body 15 and the adapter body 16.

[0082] The central rod fixing block 18 is also provided with a shaft hole 181;

[0083] The handle 14 has a curved section, the end of which is hinged to the tailstock 17 by a cylindrical pin 5, and a pin groove 4 is provided at its inner corner.

[0084] The transmission mechanism includes a handle hinge 6 and a hinge pin 12. The first end of the handle hinge 6 is hinged to the pin groove 4, and its second end is hinged to the first end of the hinge pin 12. The hinge pin 12 passes through the shaft hole 181, and its second end abuts against the first top post 10.

[0085] The locking button assembly is mounted in the mounting slot 171. The locking button assembly includes:

[0086] The button limit screw 20 has its threaded section threadedly connected to the tailstock 17.

[0087] The locking button 19 is fitted onto the unthreaded section of the button limiting screw 20 and is limited by the cap of the button limiting screw 20. The portion of the button 19 extending into the area of ​​the concave tooth structure 161 is provided with an arc-shaped protrusion 191. The concave tooth structure 161 is provided with multiple arc-shaped grooves that mate with the arc-shaped protrusion 191 on the inner side of one end of the adapter body 16.

[0088] The first spring 27 is sleeved on the unthreaded section of the button limiting screw 20 and abuts against the locking button 19.

[0089] Example 2:

[0090] The following is the assembly and usage process of the internal thread quick connector of this invention:

[0091] I. Assembly process of the internal thread quick connector of the present invention:

[0092] 1. Assembly of main components: The first sealing ring 21 is fitted onto the outer side of the first end of the adapter body 16, and then the mating end body 15 is threadedly connected and fixed to the first end of the adapter body 16; the third retaining ring 28 is inserted into the groove 174 of the tail seat 17, and then the tail seat 17 is inserted into the second end of the adapter body 16, so that the outward convex part of the third retaining ring 28 limits the adapter body 16, thus completing the assembly of the main components. At this time, the tail seat 17 can rotate relative to the adapter body 16.

[0093] 2. Quick-connect mechanism assembly: Fix the center rod fixing block 18 into the receiving cavity 172 of the tailstock 17; insert the stepped positioning ball 3 into the through hole 183 of the center rod fixing block 18; slide the T-shaped post 83 of the center rod 8 into the T-shaped groove 182 of the center rod fixing block 18, and position the center rod 8 by the stepped positioning ball 3; put the first top post 10 on the outside of the center rod 8, put the first retaining ring 25 and the second sealing ring 22 on the outside of the thick section 82 of the center rod 8, and then thread the second top post 9 to the first top post 10; put the fourth spring 30 into the spring placement cavity of the second top post 9, and then install the spring. Cap 13, so that one end of spring cap 13 abuts against the fourth spring 30; insert the inner ends of multiple claw teeth 7 into the claw end engagement cavity of the second top post 9, so that the other end of spring cap 13 abuts against the inner step of the inner end of claw teeth 7; put the third sealing ring 23 into the arc groove of the outer end of each claw tooth 7; put the return gasket 11 on the outside of the first top post 10, and then put the third spring 29 on the outside of the first top post 10, so that one end of the third spring 29 abuts against the return gasket 11, and the other end abuts against the outer step of the first top post 10; and then embed the fourth sealing ring 24 and the second retaining ring 26 into the outer concave ring of the second top post 9 in sequence to complete the assembly of the quick-connect mechanism.

[0094] 3. Transmission mechanism assembly: Hinge the handle 14 to the tailstock 17 via the cylindrical pin 5; hinge the first end of the handle hinge 6 to the pin groove 4 of the handle 14, and hinge the second end to the first end of the hinge pin 12; pass the hinge pin 12 through the shaft hole 181 of the center rod fixing block 18, so that the second end of the hinge pin 12 abuts against the first top post 10, thus completing the assembly of the transmission mechanism.

[0095] 4. Assembly of the rotary locking mechanism: The first spring 27 is fitted onto the unthreaded section of the button limiting screw 20, and the locking button 19 is fitted onto the unthreaded section of the button limiting screw 20. Then, the threaded section of the button limiting screw 20 is threaded into the locking button assembly mounting groove 171 of the tailstock 17, so that the arc protrusion 191 of the locking button 19 extends into the concave tooth structure 161 area of ​​the adapter body 16, thus completing the assembly of the rotary locking mechanism.

[0096] II. The usage process of the internal thread quick connector of the present invention

[0097] Handle angle adjustment: Press the locking button 19 to compress the first spring 27, causing the arc protrusion 191 of the locking button 19 to separate from the concave tooth structure 161 of the adapter body 16, and put it in the unlocked state; rotate the tail seat 17 to drive the handle 14 to rotate to the desired angle, release the locking button 19, the first spring 27 returns to its original position, pushes the arc protrusion 191 of the locking button 19 into the arc groove of the concave tooth structure 161, and puts it in the locked state, thus completing the fixation of the handle 14 angle.

[0098] Pipeline connection: Press handle 14, handle 14 rotates around cylindrical pin 5, pushes hinge pin 12 to move through handle hinge 6, hinge pin 12 pushes first top post 10 and center rod 8 to move, compressing third spring 29. At the same time, second top post 9 moves with center rod 8, causing claw 7 to merge. Insert the pipeline to be connected into the docking end body 15, release handle 14, third spring 29 resets, pushes first top post 10, center rod 8 and second top post 9 to reset, claw 7 opens under the action of fourth spring 30 and spring cap 13, contacting the step of docking end body 15 to lock the pipeline. At this time, third sealing ring 23 fits tightly with pipeline interface, all sealing structures function to ensure reliable sealing.

[0099] Pipe disassembly: Press the handle 14 to move the claws 7 together, and the pipe to be connected can be pulled out from the docking end body 15 to complete the disassembly.

[0100] Center rod replacement: The housing of the step positioning ball 3 has a spring structure inside. The ball is held in place by the spring. Pressing the ball allows it to enter the housing and release the restriction. Specifically, pressing the ball on the step positioning ball 3 releases the restriction on the T-shaped post 83 of the center rod 8, allowing the center rod 8 to slide out along the T-slot 182, thus completing the removal of the center rod 8. Slide the T-shaped post 83 of the new center rod 8 into the T-slot 182, and the ball on the step positioning ball 3 will be reset by the spring and block the T-shaped post 83, completing the quick replacement of the center rod 8.

[0101] In summary, this invention enables the handle to rotate 360° and lock, solving the problem of operational interference: through the rotatable connection between the adapter body and the tailstock, combined with the rotation locking mechanism, the handle can rotate freely 360° and be locked at any desired angle, effectively avoiding interference between the handle and surrounding pipes and equipment, adapting to complex working conditions with limited space and complex pipe layout, and improving operational convenience.

[0102] This invention enables quick replacement of the center rod, improving maintenance efficiency: the center rod engages with the T-slot of the center rod fixing block via a T-shaped post, combined with the positioning function of the step positioning ball, allowing for quick disassembly and replacement of the center rod without the need for tools. This significantly improves the efficiency of spare parts replacement and meets emergency maintenance needs.

[0103] This invention features a multi-seal structure that ensures reliable sealing: the multi-seal structure consists of a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, and multiple retaining rings, which respectively seal the connection points of the main components, the connection points of the top column, and the interface between the claw and the pipeline, effectively preventing media leakage and improving safety and reliability in use.

[0104] This invention features a stable structure and effortless operation: by optimizing the transmission mechanism design, pressing the handle allows the claws to close and open, reducing operational effort; the rotating locking mechanism adopts a spring-reset structure, ensuring reliable locking, preventing the tailstock from rotating, and guaranteeing connection stability; the connection methods of each component are reasonable, resulting in a compact, stable overall structure and a long service life.

[0105] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A threaded quick connector with a rotatable handle, characterized in that, include: The main body assembly includes a docking end body (15), a transition body (16) and a tail seat (17) connected in sequence. The docking end body (15) is fixedly connected to the transition body (16), and the transition body (16) is rotatably connected to the tail seat (17). The tail seat (17) is provided with a pressable handle (14). A quick-connect mechanism is located inside the main body assembly and is connected to the handle (14) via a transmission mechanism. The quick-connect mechanism includes a central rod assembly, claws (7), and an elastic reset member. The central rod assembly is in abutting linkage with the handle (14). The claws (7) are arranged in multiple pieces and evenly distributed on the outside of the central rod assembly. The outer end of each claw (7) extends out of the docking end body (15). The elastic reset member is sleeved on the central rod assembly and is used to drive the central rod assembly to reset. When the handle is pressed, the central rod assembly moves in the direction of the handle's pushing force, causing the multiple claws (7) to merge. When the handle is released, the elastic reset member drives the central rod assembly to reset, and the claws (7) open and contact the step of the docking end body. A rotary locking mechanism includes a locking button assembly and a toothed structure (161) located at one end of the adapter body (16). The locking button assembly is located on the tailstock (17) and has a resettable locking button (19). One end of the locking button (19) extends into the area of ​​the toothed structure (161). By pressing the locking button (19), the locking button (19) and the toothed structure (161) are no longer in contact, forming an unlocking structure. When the locking button (19) is released, the reset structure of the locking button assembly causes one end of the locking button (19) to lock the toothed structure (161), thus preventing the tailstock (17) from rotating.

2. The internal thread quick connector with a rotatable handle structure according to claim 1, characterized in that, The first ends of the docking end body (15) and the adapter body (16) are threadedly connected and fixed. The second end of the adapter body (16) and the tail seat (17) are connected by a disconnected third retaining ring (28) after being inserted into each other. The tail seat (17) has a groove (174) on the outer wall of the connection end with the adapter body (16). The third retaining ring (28) is engaged in the groove (174). The adapter body (16) is limited by the outward protrusion of the third retaining ring (28). The adapter body (16) and the tail seat (17) can rotate relative to each other.

3. The internal thread quick connector with a rotatable handle structure according to claim 1, characterized in that, The tailstock (17) is provided with a receiving cavity (172), a through hole (173) and a locking button assembly mounting slot (171).

4. The internal thread quick connector with a rotatable handle structure according to claim 3, characterized in that, The center rod assembly includes: A center rod fixing block (18) is fixed in the accommodating cavity (172). The center rod fixing block (18) is provided with a side-entry T-slot (182) and a through hole (183) provided at the baffle of the T-slot (182). The through hole (183) is provided with a step. The center rod (8) has a thick section (82) and a thin section connected to both ends of the thick section. The outer end of the thin section on the shorter side is connected to a T-shaped post (83), which slides into the T-shaped groove (182). The step positioning ball (3) is inserted into the through hole (183) and leaves a part of the area to block the T-shaped column (83). The first top post (10) has an outer step and is fitted around the center rod (8); The second top post (9) is fitted around the center rod (8) and threadedly connected to the first top post (10). The second top post (9) has a claw end mounting cavity.

5. A quick connector with an internal thread and a rotatable handle according to claim 4, characterized in that, The docking end body (15) has a stepped groove inside the connection end with the adapter body (16). The stepped groove is provided with a return gasket (11) and the return gasket (11) is sleeved on the outside of the first top post (10). The elastic reset component is a third spring (29), one end of which abuts against the return pad (11), and the other end abuts against the outer step of the first top post (10) to form a reset structure.

6. A quick-connect connector with an internal thread and a rotatable handle according to claim 4, characterized in that, A first sealing structure is provided at the connection between the first top post (10) and the second top post (9). The first sealing structure consists of a first retaining ring (25) and a second sealing ring (22) between the first top post (10) and the second top post (9). The first retaining ring (25) and the second sealing ring (22) are arranged adjacent to each other and are sleeved on the thick section of the center rod (8). A second sealing structure is provided between the second top post (9) and the docking end body (15). The second sealing structure is a fourth sealing ring (24) embedded in the outer concave ring of the second top post (9). The fourth sealing ring (24) abuts against the inner wall of the docking end body (15). The outer concave ring of the second top post (9) is also fitted with a second retaining ring (26), and the second retaining ring (26) and the fourth sealing ring (24) are arranged adjacent to each other.

7. A quick-connect connector with an internal thread and a rotatable handle according to claim 4, characterized in that, The claw end mounting cavity is provided from the inside out with a spring placement cavity, a spring cap movable cavity, and a claw end snap-fit ​​cavity; The spring placement cavity is provided with a fourth spring (30); The movable cavity of the spring cap is provided with a spring cap (13), one end of which abuts against the fourth spring (30). The claw end engaging cavity engages with the inner end of each claw (7), and the other end of the spring cap (13) abuts against the inner step of the inner end of each claw (7).

8. A quick connector with an internal thread and a rotatable handle according to claim 7, characterized in that, Each claw (7) has an arc groove at its outer end, and each arc groove is in the same circumference. The third sealing ring (23) is fitted onto each arc groove. A third sealing structure is provided at the connection between the docking end body (15) and the adapter body (16), wherein the third sealing structure is provided with a first sealing ring (21) at the connection between the docking end body (15) and the adapter body (16).

9. A quick-connect connector with an internal thread and a rotatable handle according to claim 4, characterized in that, The central rod fixing block (18) is also provided with a shaft hole (181). The handle (14) has a curved section, the end of which is hinged to the tailstock (17) by a cylindrical pin (5), and a pin groove (4) is provided at its inner corner. The transmission mechanism includes a handle hinge (6) and a hinge pin (12). The first end of the handle hinge (6) is hinged to the pin groove (4), and its second end is hinged to the first end of the hinge pin (12). The hinge pin (12) passes through the shaft hole (181), and its second end abuts against the first top post (10).

10. A quick-connect connector with an internal thread and a rotatable handle according to claim 4, characterized in that, The locking button assembly is mounted in the mounting slot (171), and the locking button assembly includes: Button limit screw (20), its threaded section is threadedly connected to tail seat (17); The locking button (19) is fitted onto the unthreaded section of the button limiting screw (20) and is limited by the cap of the button limiting screw (20). The part of the button that extends into the area of ​​the concave tooth structure (161) is provided with an arc-shaped protrusion (191). The concave tooth structure (161) is provided with multiple arc-shaped grooves that cooperate with the arc-shaped protrusion (191) on the inner side of one end of the adapter body (16). The first spring (27) is sleeved on the unthreaded section of the button limiting screw (20) and abuts against the locking button (19).

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