Screwing type connecting piece

Abstract

The utility model discloses a screwing type connecting piece which comprises a connecting pipe and screwing assemblies arranged at the two ends of the connecting pipe, and external threads are arranged at the two ends of the connecting pipe. The screwing assembly comprises a rotating cover and two opening and closing blades, the two opening and closing blades are C-shaped, openings are oppositely formed in the left side and the right side of the end face of the connecting pipe, and the opening and closing blades are in sliding connection with the end face of the connecting pipe and fixed in the circumferential direction; the rotating cover is of an annular structure provided with internal threads, two guide grooves are formed in the rotating cover around the axis of the connecting pipe, the two ends of each guide groove are an unlocking end and a locking end respectively, the guide grooves are gradually close to the axis of the connecting pipe from the unlocking ends to the locking ends, a guide key is further fixedly connected to the middle of the switch blade, and the guide key is slidably connected into the guide grooves; the rotary cover is rotated in the screwing direction, and the screwing end of the guide groove is close to the guide key so as to drive the two switch blades to be closed. According to the screwing type connecting piece, a pipe fitting is clamped in a rotating mode, tools are not needed, and disassembly and connection are more convenient.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting connection technology, and in particular to a screw-on connector. Background Technology

[0002] Traditional pipe connection methods mostly involve gluing or welding. While these methods meet the needs of pipe connection to a certain extent, they also have many shortcomings. For example, when repairing or replacing pipes, traditional connection methods require cutting off the pipe at the connection point, and then repeating the traditional connection method when reconnecting, increasing the cost of use. When the pipes are vertical, construction workers usually need to carry welding machines, glue, and other tools, climb ladders to connect the pipes, which is inconvenient and poses safety hazards. Utility Model Content

[0003] To address the shortcomings of existing pipe connection methods that require tools and are inconvenient to connect and disconnect, this utility model proposes a screw-on connector that clamps the pipe by rotation, eliminating the need for tools and making connection and disconnection much easier.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A screw-on connector includes a connecting pipe and screw-on assemblies disposed at both ends of the connecting pipe. The connecting pipe has external threads at both ends. The screw-on assemblies include a rotating cover and two switch blades. The two switch blades are C-shaped, with their openings facing each other on the left and right sides of the end face of the connecting pipe. The switch blades are slidably connected to the end face of the connecting pipe and are circumferentially fixed. The rotating cover is an annular structure with internal threads, and it engages with the end of the connecting pipe via the internal and external threads. The rotating cover has two guide grooves around the axis of the connecting pipe, with an unlocking end and a locking end at each end. From the unlocking end to the locking end, the guide grooves gradually approach the axis of the connecting pipe. A guide key is also fixedly connected to the middle of each switch blade, and the guide key is slidably connected in the guide groove. When the rotating cover is rotated in the screw-on direction, the screw-on end of the guide groove approaches the guide key, thereby driving the two switch blades to close.

[0006] With the above setup, rotating the cover closes the switch blade, securing the pipe fitting. Rotating the cover in the opposite direction opens the switch blade, releasing the pipe fitting. No tools are needed, making pipe fitting assembly and disassembly convenient.

[0007] Furthermore, radially extending anti-rotation grooves are provided on the left and right sides of the end face of the connecting pipe, and a limit key is fixedly connected to the middle of the switch blade, with the limit key slidingly connected in the anti-rotation groove.

[0008] The above settings prevent the switch blades from rotating around the axis of the connecting pipe.

[0009] Furthermore, the end face of the connecting tube protrudes along the outer periphery to form a flange, and the connecting piece has an unlocked state. In the unlocked state, the guide key is located at the unlocked end of the guide groove, the outer periphery of the switch leaf is in contact with the inner side of the flange, and the inner side of the switch leaf does not protrude from the inner side of the connecting tube.

[0010] With the above settings, when the switch blade is unlocked, the outer side of the switch blade abuts against the flange, preventing the switch blade from shaking and preventing the end of the switch blade from protruding from the inside of the connecting pipe.

[0011] Furthermore, the rotating cover includes a guide plate and an end cover. The guide plate is connected to the inside of the end cover, the guide groove is provided on the guide plate, the internal thread is provided on the inside of the end cover, the end cover is engaged with the end of the connecting pipe, and can drive the guide plate to rotate synchronously.

[0012] With the above configuration, the rotating cover has a split structure, which facilitates the processing of the rotating cover and also makes it easier to make the guide plate and the end cover different materials to improve the life of the rotating cover.

[0013] Furthermore, a transmission groove is provided on the guide plate, and a transmission key is fixedly connected to the end cover, with the transmission key embedded in the transmission groove.

[0014] With the above settings, rotating the end cover causes it to rotate synchronously with the guide plate via a transmission key and transmission groove.

[0015] Furthermore, the outer side of the end cap is textured.

[0016] The above settings increase the friction on the surface of the end cap, making it easier to manually rotate the end cap.

[0017] Furthermore, the switch blades are made of metal.

[0018] By implementing the above settings, the hardness and wear resistance of the switch blades are improved, thereby enhancing the clamping effect of the switch blades. Attached Figure Description

[0019] Figure 1 This is an exploded view of the connector in an embodiment.

[0020] Figure 2 This is a schematic diagram of the end cap in an embodiment.

[0021] Figure 3 This is a schematic diagram of the guide plate in an embodiment.

[0022] Figure 4 This is a schematic diagram of the connecting pipe in an embodiment.

[0023] Figure 5 This is a schematic diagram of the switch blade in an embodiment.

[0024] Figure 6 This is a schematic diagram of the unlocked state of the connector in an embodiment.

[0025] Figure 7 This is a schematic diagram of the locking state of the connector in an embodiment. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] like Figures 1 to 7 A screw-on connector includes a connecting pipe 3 and screw-on assemblies disposed at both ends of the connecting pipe 3. The connecting pipe 3 has external threads 4 at both ends. The screw-on assemblies include a rotating cover 5 and two switch blades 6. The two switch blades 6 are C-shaped, with their openings facing each other on the left and right sides of the end face of the connecting pipe 3. The switch blades 6 are slidably connected to the end face of the connecting pipe 3 and are circumferentially fixed. The rotating cover 5 is an annular structure with internal threads. The rotating cover 5 engages with the end of the connecting pipe 3 via the internal and external threads 4. The rotating cover 5 has two guide grooves 8 around the axis of the connecting pipe 3. The two ends of the guide grooves 8 are an unlocking end 9 and a locking end 10, respectively. From the unlocking end 9 to the locking end 10, the guide grooves 8 gradually approach the axis of the connecting pipe 3. A guide key 11 is also fixedly connected to the middle of the switch blades 6, and the guide key 11 is slidably connected in the guide grooves 8. When the rotating cover 5 is rotated in the screw-on direction, the screw-on end of the guide groove 8 approaches the guide key 11, thereby driving the two switch blades 6 to close.

[0028] With the above settings, rotating the rotating cover 5 closes the switch leaf 6, clamping the pipe fitting. Rotating the rotating cover 5 in the opposite direction opens the switch leaf 6, releasing the pipe fitting. No tools are needed, making the pipe fitting easy to install and remove.

[0029] The connecting pipe 3 in this application is made of plastic. The inner diameter of the connecting pipe 3 is adapted to the outer diameter of the fitting to be connected. Initially, if... Figure 6 With the rotating cover 5 not tightened, the guide key 11 is close to the unlocking end 9 of the guide groove 8. The guide key is located on the side of the switch blade 6 near the rotating cover 5. The switch blade 6 does not protrude from the inside of the connecting pipe 3 and will not interfere with the fitting. The end of the fitting is inserted into the end of the connecting pipe 3 through the rotating cover 5. The two guide grooves 8 are arranged in a circular array around the axis of the connecting pipe 3. The two switch blades 6 are C-shaped with their openings facing each other. The switch blades 6 are circumferentially fixed, meaning that the switch blades 6 can move radially closer to or away from the axis of the connecting pipe 3 without rotating around the axis of the connecting pipe 3. The connecting pipe 3 does not rotate. The rotating cover 5 is rotated in the tightening direction, causing the guide groove 8 to rotate. The locking end 10 of the guide groove 8 is close to the guide key 11. The guide groove 8 drives the switch blade 6 to move towards the axis of the connecting pipe 3 through the guide key 11. The two switch blades 6 move synchronously towards each other and close. The inner side of the switch blade 6 protrudes from the inside of the connecting pipe 3, and the connecting piece is in a locked state. Figure 7The pipe fitting is clamped in place, and the rotating cover 5 is screwed onto the end of the connecting pipe 3. The central angle corresponding to the guide groove 8 in this application is α, which is 90°. That is, rotating the rotating cover 5 by 90° will clamp the pipe fitting, further improving convenience. When the pipe fitting needs to be removed, it is rotated 90° in the opposite direction. The guide groove 8 drives the switch leaf 6 in the opposite direction through the guide key 11. The two switch leaves 6 open, releasing the pipe fitting. The pipe fitting can then be pulled out of the connecting pipe 3 for maintenance or replacement.

[0030] As one implementation method, anti-rotation grooves 12 extending radially are provided on the left and right sides of the end face of the connecting pipe 3, and a limit key 13 is fixedly connected to the middle of the switch blade 6, with the limit key 13 slidably connected in the anti-rotation groove 12.

[0031] The above settings prevent the switch blade 6 from rotating around the axis of the connecting pipe 3.

[0032] The limit key 13 of this application is specifically located on the side of the switch leaf 6 near the connecting tube.

[0033] As one implementation, the end face of the connecting tube 3 protrudes along the outer periphery to form a flange 14, and the connector has an unlocked state. In the unlocked state, the guide key 11 is located at the unlocked end 9 of the guide groove 8, the outer periphery of the switch leaf 6 is in contact with the inner side of the flange 14, and the inner side of the switch leaf 6 does not protrude from the inner side of the connecting tube 3.

[0034] With the above settings, when the switch leaf 6 is in the unlocked state, the outer side of the switch leaf 6 abuts against the flange 14, and the switch leaf 6 will not wobble, preventing the end of the switch leaf 6 from protruding from the inner side of the connecting pipe 3.

[0035] In this application, the flange 14 is integrally formed with the connecting pipe 3. In the unlocked state, the guide key 11 is located at the unlocking end 9 of the guide groove 8, and the outer periphery of the switch blade 6 is in contact with the inner side of the flange 14. The switch blade 6 will not shake, that is, the switch blade 6 will not rotate around the limit key 13, preventing the end of the switch blade 6 from protruding into the inner side of the connecting pipe 3 and interfering with the pipe. The thickness of the switch blade 6 is less than 2mm to increase the clamping effect of the switch blade 6.

[0036] As one implementation, the rotating cover 5 includes a guide plate 51 and an end cover 52. The guide plate 51 is connected to the inner side of the end cover 52. The guide groove 8 is provided on the guide plate 51, and the internal thread is provided on the inner side of the end cover 52. The end cover 52 is engaged with the end of the connecting pipe 3 and can drive the guide plate 51 to rotate synchronously.

[0037] With the above configuration, the rotating cover 5 is a split structure, which facilitates the processing of the rotating cover 5 and also makes it easier to make the guide plate 51 and the end cover 52 into different materials to improve the life of the rotating cover 5.

[0038] Specifically, the end cap 52 is made of plastic, which facilitates the production of end caps 52 with internal threads, while the guide plate 51 is made of metal to improve wear resistance and prevent the guide key 11 from wearing down the guide plate 51.

[0039] As one implementation, a transmission groove 15 is provided on the guide plate 51, and a transmission key 16 is fixedly connected to the end cover 52, with the transmission key 16 embedded in the transmission groove 15.

[0040] With the above settings, rotating the end cover 52 causes the end cover 52 to drive the guide plate 51 to rotate synchronously via the transmission key 16 and the transmission groove 15.

[0041] As one implementation method, the outer side of the end cap 52 is provided with texture 17.

[0042] The above settings increase the surface friction of the end cap 52, making it easier to manually rotate the end cap 52.

[0043] As one implementation method, switch leaf 6 is made of metal.

[0044] The above settings improve the hardness and wear resistance of the switch blade 6, thereby enhancing the clamping effect of the switch blade 6.

[0045] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A screw-on connector, characterized in that, The device includes a connecting pipe and tightening assemblies at both ends of the connecting pipe. Both ends of the connecting pipe have external threads. The tightening assembly includes a rotating cover and two switch blades. The two switch blades are C-shaped, with their openings facing each other on the left and right sides of the end face of the connecting pipe. The switch blades are slidably connected to the end face of the connecting pipe and are circumferentially fixed. The rotating cover is an annular structure with internal threads. The rotating cover engages with the end of the connecting pipe via the internal and external threads. The rotating cover has two guide grooves around the axis of the connecting pipe, with an unlocking end and a locking end at each end. From the unlocking end to the locking end, the guide grooves gradually approach the axis of the connecting pipe. A guide key is also fixedly connected to the middle of each switch blade, and the guide key is slidably connected in the guide groove. Rotating the rotating cover in the tightening direction causes the tightening end of the guide groove to approach the guide key, thereby driving the two switch blades to close.

2. The screw-on connector according to claim 1, characterized in that, The end face of the connecting pipe is provided with radially extending anti-rotation grooves on both the left and right sides, and the middle part of the switch blade is also fixedly connected with a limit key, which is slidably connected in the anti-rotation groove.

3. A screw-on connector according to claim 2, characterized in that, The end face of the connecting tube protrudes along the outer periphery to form a flange. The connector has an unlocked state. In the unlocked state, the guide key is located at the unlocked end of the guide groove. The outer periphery of the switch blade is in contact with the inner side of the flange, and the inner side of the switch blade does not protrude from the inner side of the connecting tube.

4. A screw-on connector according to claim 3, characterized in that, The rotating cover includes a guide plate and an end cover. The guide plate is connected to the inside of the end cover. The guide groove is provided on the guide plate. The internal thread is provided on the inside of the end cover. The end cover is engaged with the end of the connecting pipe and can drive the guide plate to rotate synchronously.

5. A screw-on connector according to claim 4, characterized in that, The guide plate is provided with a transmission groove, and the end cover is fixedly connected with a transmission key, which is embedded in the transmission groove.

6. A screw-on connector according to claim 4, characterized in that, The outer side of the end cap is textured.

7. A screw-on connector according to claim 3, characterized in that, The switch blade is made of metal.

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