A replacement coupling with bidirectional interlock

Abstract

The application discloses a replacement joint with bidirectional interlocking, which comprises a joint body, a plurality of protrusions arranged on the jointing end of the joint body, and a plurality of recesses. When two replacement joints are jointed together, the protrusions of the opposite replacement joint are rotated and pushed to the slope, the slope is rotated and moved upward, the protrusions are also rotated and moved upward to the inclined rail, and the locking hook is rotated and moved downward. At this time, the locking hook does not interfere with the circumferential rotation track of the protrusions of the opposite joint, and the two replacement joints can also be twisted and loosened in the circumferential direction. When the valve core is driven to rotate and open by the handle, the driving protrusion is moved upward and rotated into the straight rail through the inclined rail, the locking hook hooks the opposite protrusion to limit the circumferential rotation of the opposite replacement joint, the movable locking buckle is circumferentially engaged with the protrusions of the opposite replacement joint, the circumferential rotation freedom of the replacement joint is effectively limited, and the two replacement joints are prevented from loosening.

Description

Technical Field

[0001] This invention relates to the technical field of pipe connections, and in particular to a replacement joint with bidirectional interlocking. Background Technology

[0002] Quick-connect couplings achieve rapid pipe connection through rotational locking, but existing structures rely solely on locking friction resistance and lack a circumferential limiting mechanism.

[0003] When pipelines are subjected to vibration, pressure fluctuations, or unexpected torque, the joints are prone to relative rotation, causing the locking to gradually loosen, resulting in low reliability and stability. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a replacement connector with bidirectional interlocking.

[0005] This invention provides the following technical solution: a replacement connector with bidirectional interlocking, comprising:

[0006] The connector body has multiple protrusions and multiple grooves on its mating end; when two replacement connectors are mated together, the protrusions of the two replacement connectors are screwed into each other's grooves, thereby achieving mating and locking of the two replacement connectors.

[0007] A rotary valve is provided on the connector body, and the handle of the rotary valve is located outside the connector body. The rotary valve is closed or opened by rotating the handle.

[0008] A movable latch is rotatably disposed in a groove near the rotary valve, forming a lever structure. The rotary valve cooperates with the movable latch. When the rotary valve is in the open state, the movable latch engages with the corresponding protrusion in the groove, restricting the circumferential rotational freedom of the protrusion. When the rotary valve is in the closed state, the movable latch releases its engagement with the protrusion.

[0009] Furthermore, one end of the movable latch forms a locking hook, and the other end is provided with a protruding pin. The middle part of the movable latch is rotatably connected to the connector body. The handle of the rotary valve is provided with a slide rail, which includes an inclined rail and a straight rail. In the initial state, the protruding pin is located at the inclined rail. When the handle is rotated to open the rotary valve, the inclined rail presses against the protruding pin, causing the locking hook of the movable latch to engage with the protruding pin.

[0010] Furthermore, the movable latch also includes a ramp, which engages with the protrusion; the slide rail also includes a stop rail, which communicates with the inclined rail and is vertical. Initially, the protruding pin is located at the stop rail; when the protrusion is screwed into the groove, the protrusion presses against the inclined rail, causing the protruding pin to move to the inclined rail; the replacement connector also includes a torsion spring disposed between the movable latch and the connector body.

[0011] Furthermore, the connector body includes a valve body, and a threaded interface is provided at the tail end of the valve body for connecting to a pipeline; the rotary valve and the movable latch are both provided on the valve body, and the protrusion and the groove are provided on the side of the valve body away from the tail end.

[0012] Furthermore, a steel ball is provided between the tail section and the valve body, and the valve body and the tail section are rotatably connected by the steel ball.

[0013] Furthermore, a fifth sealing ring and a second guide band are provided between the tail section and the valve body.

[0014] Furthermore, the rotary valve includes a valve core rotatably disposed inside the connector body, and the handle is fixedly connected to the valve core. By rotating the handle, the state of the valve core is adjusted, so that the pipeline is closed or open.

[0015] Furthermore, the handle and the valve core are fixedly connected by a valve stem, a first sealing ring is provided between the outer wall of the valve stem and the valve body, a first guide band is also provided between the outer wall of the valve stem and the valve body, the rotary valve also includes a fixing pin provided on the valve body, the valve core is rotatably connected to the fixing pin, and a fourth sealing ring is provided between the fixing pin and the valve body.

[0016] Furthermore, a second sealing ring is provided at the mating end of the connector body. When the two replacement connectors are mated, the second sealing rings of the two replacement connectors are pressed and adhered to each other.

[0017] Furthermore, a third sealing ring is provided on the valve body, and the third sealing ring is in contact with the surface of the valve core.

[0018] The beneficial effects of this invention are as follows: When the two replacement connectors are mated and rotated to lock together, the protrusion of the opposing replacement connector rotates and pushes against the ramp, the ramp rotates and moves upward, and at the same time, the protruding pin also rotates upward and moves to the inclined rail, while the locking hook rotates downward. At this time, the locking hook does not interfere with the circumferential rotation trajectory of the protrusion of the opposing connector, and the two replacement connectors can still rotate circumferentially to loosen each other. When the valve core is rotated and opened by the handle, the driving protruding pin is moved upward through the inclined rail and screwed into the straight rail, and the locking hook hooks onto the opposing protrusion to restrict the circumferential rotation of the opposing replacement connector, thus activating the locking mechanism. The protrusions of the opposing replacement joints form a circumferential engagement, effectively restricting the circumferential rotational freedom of the replacement joints and preventing the two replacement joints from becoming loose. In addition, when the two replacement joints are not connected, the handle cannot be driven because the protrusion is blocked by the retaining rail, and the valve core is in the closed state. When the two replacement joints are connected and locked by rotation, the protrusions of the opposing joints rotate and press against the ramp, causing the protrusion to move from the inside of the retaining rail to the ramp. At this time, the valve core can be opened by rotating the handle. Thus, the valve core can only be opened after the two replacement joints are connected, realizing the function of preventing misoperation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the lever limiting mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the handle structure of the present invention;

[0023] Figure 5 This is a schematic diagram of a partial three-dimensional structure of the two joints of the present invention before they are screwed together.

[0024] Figure 6 This is a schematic diagram of a partial cross-sectional view of the structure of the two joints of the present invention before they are screwed together.

[0025] Figure 7 This is a schematic diagram of a partial three-dimensional structure of the two connectors screwed together when the handle of the present invention is in the closed state.

[0026] Figure 8 This is a schematic diagram of a partial cross-sectional view of the two connectors screwed together when the handle of the present invention is in the closed state.

[0027] Figure 9 This is a schematic diagram of a partial three-dimensional structure of the two connectors screwed together when the handle of the present invention is in the open state.

[0028] Figure 10This is a schematic diagram of a partial cross-sectional view of the two connectors screwed together when the handle of the present invention is in the open state.

[0029] Figure 11 This is a schematic diagram of the exploded structure of the present invention.

[0030] Figure 12 This is a schematic diagram showing the connection relationship between the groove and the movable latch of the present invention.

[0031] The markings in the attached diagram are as follows: 1-tail, 2-valve body, 3-valve core, 4-valve stem, 5-handle, 6-movable latch, 7-screw, 8-first guide band, 9-first sealing ring, 10-first screw, 11-protrusion, 12-second sealing ring, 13-third sealing ring, 14-fixing pin, 15-protective sleeve, 16-fourth sealing ring, 17-second guide band, 18-fifth sealing ring, 19-steel ball, 20-groove, 21-locking hook, 22-second screw, 23-protrusion pin, 24-slope, 25-torsion spring, 26-stop rail, 27-sloping rail, 28-straight rail. Detailed Implementation

[0032] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0033] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] A replacement connector with bidirectional interlocking, such as Figures 1-12 As shown, it includes: connector body, rotary valve, and movable locking buckle 6;

[0036] The connector body includes a tail section 1 and a valve body 2.

[0037] like Figure 2 and 11 As shown, the tail section 1 has open ends on both sides and a hollow internal structure. The end of the tail section 1 furthest from the valve body 2 is equipped with a standard pipe thread interface to accommodate pipes of different specifications. The other end of the tail section 1 is inserted into the valve body 2 and is rotatably connected to the valve body 2 via a steel ball 19 and a second guide band 17. Specifically, as shown... Figure 2 As shown, the outer wall of the tail section 1 has three annular receiving grooves from left to right. The first receiving groove is used to receive the steel ball 19, the second receiving groove is used to receive the fifth sealing ring 18, and the fifth sealing ring 18 is used to achieve the seal between the tail section 1 and the valve body 2. The third receiving groove is used to receive the second guide belt 17, which is used to reduce the rotational friction resistance between the tail section 1 and the valve body 2. The steel ball 19, the fifth sealing ring 18 and the second guide belt 17 are all located between the tail section 1 and the valve body 2.

[0038] like Figure 2 and 11 As shown, the valve body 2 is also open at both ends and has a hollow internal structure. The left end connects to the tail 1, and the right end is used to connect to another replacement connector. A first valve body receiving groove is also provided at the corresponding position of the first receiving groove of the tail 1 on the left end of the valve body 2. The first valve body receiving groove and the first receiving groove of the tail 1 cooperate to accommodate the steel ball 19, thereby realizing the rotational connection between the two. A hole is opened on the valve body 2, which communicates with the first valve body receiving groove. The steel ball 19 can be inserted into the first valve body receiving groove through the hole, and the hole is sealed with a screw 7 to prevent the steel ball 19 from falling out of the hole. The valve body 2 has through holes on both the upper and lower sides of its middle section, both of which communicate with the inner cavity of the valve body 2. These through holes are used to install a rotary valve. A second annular valve body receiving groove is provided on the right side of the inner cavity of the valve body 2. This groove is used to embed a third sealing ring 13, which fits against the surface of the valve core 3 of the rotary valve, thus achieving a rotational seal between the valve core 3 and the valve body 2. A second sealing ring 12 is provided on the right end face of the valve body 2. When the two replacement joints are connected, the two second sealing rings 12 fit together, achieving a radial seal on the replacement joint. Figure 12 As shown, two protrusions 11 and two grooves 20 are provided on the right end mating surface of the valve body 2. The number of protrusions 11 and grooves 20 can be increased or decreased according to the actual situation, and there is no limit to the number. When the two replacement connectors are mated together, the protrusions 11 of the two replacement connectors are screwed into each other's grooves 20, thereby achieving axial locking of the two replacement connectors. A protective sleeve 15 is wrapped around the outer wall of the mating end of the valve body 2. The protective sleeve 15 is used to protect this part of the valve body 2.

[0039] like Figures 2-4 As shown in Figure 11, the rotary valve includes a fixing pin 14, a valve core 3, a valve stem 4, a handle 5, a first guide band 8, a first sealing ring 9, a first screw 10, and a fourth sealing ring 16;

[0040] A fixing pin 14 is fixedly connected to the through hole on the lower side of the valve body 2, and one end of the fixing pin 14 extends into the interior of the valve body 2. A fourth sealing ring 16 is provided at the end face between the fixing pin 14 and the valve body 2 to achieve a seal between the fixing pin 14 and the valve body 2. A valve core 3 is rotatably connected to the extended end of the fixing pin 14. A through hole is formed in the middle of the valve core 3. When the through hole and the inner cavity of the valve body 2 are in a straight line, the valve body 2 is in a passage, allowing the flowing substance to flow from one end of the valve core 3 to the other end. A concave hole adapted to the lower part of the valve stem 4 is opened on the upper part of the valve core 3. The valve stem 4 is rotatably set at the through hole on the upper side of the valve body 2, and the lower part of the valve stem 4 passes through the through hole on the upper side of the valve body 2 and is inserted into the concave hole. The lower part of the valve stem 4 is square. The valve stem 4 rotates. This drives the valve core 3 to rotate. A first annular sealing ring 9 and a first guide band 8 are provided between the outer wall of the valve stem 4 and the through hole on the upper side of the valve body 2. The first sealing ring 9 seals the valve stem 4 and the valve body 2, and the first guide band 8 reduces rotational friction between the valve stem 4 and the valve body 2. A threaded hole is formed on the upper middle part of the valve stem 4, and the upper part of the valve stem 4 is square-shaped. A recessed hole adapted to the upper part of the valve stem 4 is provided at the lower part of the handle 5. The upper part of the valve stem 4 is inserted into the recessed hole at the lower part of the handle 5. The handle 5 also has a mounting hole for accommodating the first screw 10. The first screw 10 is screwed into the threaded hole of the valve stem 4 from the mounting hole, thereby fixing the handle 5 and the valve stem 4 together. Rotation of the handle 5 drives the valve stem 4 to rotate. Figure 4 As shown, a slide rail is provided on the handle 5, and the axis of the slide rail is consistent with the rotation axis of the handle 5. The slide rail includes a slanted rail 27 and a straight rail 28.

[0041] like Figures 2-4 As shown in Figure 11, the movable latch 6 is rotatably disposed in the groove 20 near the handle 5, forming a lever structure. The rotary valve cooperates with the movable latch 6. When the rotary valve is in the open state, the movable latch 6 engages with the protrusion 11 in the corresponding groove 20, restricting the circumferential rotational freedom of the protrusion 11. When the rotary valve is in the closed state, the movable latch 6 releases its engagement with the protrusion 11. The movable latch 6 is fixedly connected to the corresponding groove 20 by the second screw 22. In this embodiment, the movable latch 6 is fixedly connected to the groove 20 near the handle 5 by the second screw 22, and the movable latch 6 is rotatably connected to the second screw 22. One end of the movable latch 6 forms a locking hook 21, and the other end is fixedly connected to a protruding pin 23. The protruding pin 23 is integrally formed with the movable latch 6. In the initial state, one end of the protruding pin 23 is located in the inclined rail 27 of the handle 5. It can be understood that, as Figures 5-10As shown, after the two replacement connectors are connected, the operator operates the rotating handle 5 to open the rotary valve. The slide rail on the handle 5 will rotate with the handle 5. At this time, the inclined rail 27 presses against the protruding pin 23, causing the protruding pin 23 to rotate upward and move into the straight rail 28. Meanwhile, the locking hook 21 on the other end rotates downward. Figure 9 and Figure 10 As shown, the locking hook 21 hooks onto the protrusion 11 of the opposite replacement connector, so that the movable locking buckle 6 and the protrusion 11 form a circumferential engagement, preventing the two replacement connectors from accidentally coming loose and effectively restricting the circumferential rotational freedom of the two replacement connectors; when the handle 5 is rotated to close the rotary valve, the protrusion 23 will move to the inclined rail 27. As the handle 5 continues to rotate, the inclined rail 27 will press against the protrusion 23, causing the protrusion 23 to move to the bottom of the inclined rail 27. At this time, the locking hook 21 will lift up and no longer hook onto the protrusion 11, releasing the engagement limit of the two replacement connectors.

[0042] like Figures 4-10 As shown, the present invention also provides a second embodiment, which, based on the first embodiment, further includes a ramp 24 formed on the movable latch 6; the slide rail also includes a stop rail 26; and a torsion spring 25 is disposed between the movable latch 6 and the connector body.

[0043] Specifically, the ramp 24 is pressed into the protrusion 11 of the opposite replacement joint; the stop rail 26 is connected to the ramp 27, and the ramp 27 is vertical. In the initial state, the protrusion 23 is located at the stop rail 26; when the protrusion 11 is screwed into the groove 20, the protrusion 11 presses against the ramp 27, causing the protrusion 23 to move to the ramp 27.

[0044] It is understandable that, initially, the protruding pin 23 is located at the stop rail 26. Since the stop rail 26 is vertical, the protruding pin 23 and the stop rail 26 will prevent the handle 5 from rotating. When the two replacement connectors are connected, when the protrusion 11 of the replacement connector rotates into the groove 20 of the opposite replacement connector, the protrusion 11 will press against the ramp 24, and the ramp 24 will move upward. Since the ramp 24 and the protruding pin 23 are at the same end, the protruding pin 23 will move upward, so that the protruding pin 23 moves to the ramp 27. At this time, the handle 5 can be rotated to realize the opening or closing of the rotary valve. That is to say, when the two replacement connectors are not fully connected, the rotary valve will not be able to rotate. When the handle 5 drives the valve core 3 to rotate and close, that is, drives the rotary valve to close, the protruding pin 23 will move to the lowest end of the ramp 27. When the protrusion 11 of the opposite replacement connector rotates out of the groove 20 and no longer presses against the ramp 24, the protruding pin 23 will move downward and screw into the stop rail 26 to reset under the force of the torsion spring 25.

[0045] In summary, after the two replacement connectors are grouted and locked together, the protrusion 11 of the opposing replacement connector rotates and pushes against the ramp 24, causing the ramp 24 to rotate upwards. Simultaneously, the protrusion 23 also rotates upwards and moves to the inclined rail 27, while the locking hook 21 rotates downwards. At this point, the locking hook 21 does not interfere with the circumferential rotation trajectory of the protrusion 11 of the opposing connector, and the two replacement connectors can still rotate circumferentially to loosen each other. When the valve core 3 is opened by the handle 5, the driving protrusion 23 is moved upwards through the inclined rail 27 and screwed into the straight rail 28. The locking hook 21 also hooks onto the opposing protrusion 11, restricting the circumferential rotation of the opposing replacement connector, thus activating the locking mechanism. The buckle 6 engages circumferentially with the protrusion 11 of the opposite replacement connector, effectively restricting the circumferential rotational freedom of the replacement connector and preventing the two replacement connectors from coming loose. In addition, when the two replacement connectors are not connected, the handle 5 cannot be driven because the protrusion 23 is blocked by the stop rail 26, and the valve core 3 is in the closed state. When the two replacement connectors are connected and rotated to lock, the protrusion 11 of the opposite connector rotates and presses the ramp 24, causing the protrusion 23 to move from the stop rail 26 to the ramp 27. At this time, the valve core 3 can be opened by rotating the handle 5. Thus, the valve core 3 can only be opened after the two replacement connectors are connected, realizing the function of preventing misoperation.

[0046] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A replacement connector with bidirectional interlocking, characterized in that, include: The connector body has multiple protrusions and multiple grooves on its mating end; when two replacement connectors are mated together, the protrusions of the two replacement connectors are screwed into each other's grooves, thereby achieving mating and locking of the two replacement connectors. A rotary valve is provided on the connector body, and the handle of the rotary valve is located outside the connector body. The rotary valve can be closed or opened by rotating the handle. A movable latch is rotatably disposed in the groove near the rotary valve, forming a lever structure. The rotary valve cooperates with the movable latch. When the rotary valve is in the open state, the movable latch engages with the protrusion in the corresponding groove, restricting the circumferential rotational freedom of the protrusion. When the rotary valve is in the closed state, the movable latch releases its engagement with the protrusion. One end of the movable latch forms a locking hook, and the other end is provided with a protruding pin. The middle part of the movable latch is rotatably connected to the connector body. The handle of the rotary valve is provided with a slide rail, which includes an inclined rail and a straight rail. In the initial state, the protruding pin is located at the inclined rail. When the handle is rotated to open the rotary valve, the inclined rail presses against the protruding pin, causing the locking hook of the movable latch to engage with the protruding block. The movable latch also includes a ramp, which engages with the protrusion; the slide rail also includes a stop rail, which communicates with the inclined rail and is vertical. Initially, the protrusion is located at the stop rail; when the protrusion is screwed into the groove, the protrusion presses against the inclined rail, causing the protrusion to move to the inclined rail; the replacement connector also includes a torsion spring disposed between the movable latch and the connector body.

2. The replacement connector according to claim 1, characterized in that, The connector body includes a valve body, and a threaded interface is provided at the tail end of the valve body for connecting to a pipeline; the rotary valve and the movable latch are both provided on the valve body, and the protrusion and the groove are provided on the side of the valve body away from the tail end.

3. The replacement connector according to claim 2, characterized in that, A steel ball is provided between the tail section and the valve body, and the valve body and the tail section are rotatably connected by the steel ball.

4. The replacement connector according to claim 3, characterized in that, A fifth sealing ring and a second guide band are also provided between the tail section and the valve body.

5. The replacement connector according to claim 2, characterized in that, The rotary valve includes a valve core that is rotatably disposed inside the connector body. The handle is fixedly connected to the valve core. By rotating the handle, the state of the valve core is adjusted so that the pipeline is closed or open.

6. The replacement connector according to claim 5, characterized in that, The handle and the valve core are fixedly connected by a valve stem. A first sealing ring is provided between the outer wall of the valve stem and the valve body. A first guide band is also provided between the outer wall of the valve stem and the valve body. The rotary valve also includes a fixing pin provided on the valve body. The valve core is rotatably connected to the fixing pin. A fourth sealing ring is provided between the fixing pin and the valve body.

7. The replacement connector according to claim 1, characterized in that, A second sealing ring is provided at the mating end of the connector body. When the two replacement connectors are mated, the second sealing rings of the two replacement connectors are pressed and adhered to each other.

8. The replacement connector according to claim 5, characterized in that, The valve body is provided with a third sealing ring, which is in contact with the surface of the valve core.

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