Pneumatic connector

Abstract

The utility model provides a pneumatic connector, which relates to the technical field of connectors, and comprises a threaded end and a matching port, a corrugated pipe is detachably and fixedly arranged between the threaded end and the matching port, a positioning mechanism is fixedly arranged on the upper surface of the corrugated pipe, and the positioning mechanism comprises a first curved bar, a second curved bar, a screw and a nut. The lower surface of the first curved bar and the lower surface of the second curved bar are fixedly arranged on the upper surface of the corrugated pipe, the lower surface of the first curved bar and the lower surface of the second curved bar intersect, coincide and abut against each other, a screw is fixedly arranged on the upper surface of the second curved bar, and the upper end of the screw penetrates through the first curved bar. The periphery of the first curved bar is in threaded connection with a nut, and the lower surface of the nut abuts against the first curved bar. According to the utility model, the matching port can be horizontally moved left and right, and the movement of the matching port can drive the corrugated pipe to freely bend at an angle, so that the angle of the pneumatic joint can be flexibly changed, the pneumatic joint is prevented from being frequently replaced, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of joints, in particular to a pneumatic joint. Background Art

[0002] Pneumatic connectors are quick connectors mainly used for air piping and pneumatic tools. They can be used to connect the butt-joint pipe to the equipment, so that the butt-joint pipe can be quickly connected to the equipment.

[0003] For example, the prior art application number is CN202120301952.2, which discloses an easily repairable pneumatic joint, including a pneumatic joint body, a mating port is provided at one end of the pneumatic joint body, and the mating port extends outward away from one end of the pneumatic joint body to form a guide portion; a connecting component is connected to one end of the pneumatic joint body close to the mating port, and a mating groove is provided at a position of the connecting component close to one end of the pneumatic joint body corresponding to the mating port, and a limiting groove is provided at a position corresponding to the mating groove and the limiting portion, the limiting groove extends to one side to form a guide groove, and the guide groove extends upward away from one end of the mating groove to form a fixed groove; the mating groove is plug-fitted with the mating port;

[0004] It was found during use that the above scheme is a pneumatic connector with a fixed angle. When the angle of the pneumatic connector needs to be adjusted, the pneumatic connector can only be replaced. Such an operation process requires a certain amount of time to operate, which will cause a certain amount of time waste and increase the cost of the pneumatic connector. Therefore, we improved the above scheme based on actual usage. Utility Model Content

[0005] The main purpose of the utility model is to provide a pneumatic joint, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A pneumatic joint comprises a threaded end and a mating port, wherein a bellows is detachably fixedly arranged between the threaded end and the mating port, and a positioning mechanism is fixedly arranged on the upper surface of the bellows; the positioning mechanism comprises a first bent rod, a second bent rod, a screw and a nut, wherein the lower surfaces of the first bent rod and the second bent rod are respectively fixedly arranged on the upper surface of the bellows, the lower surface of the first bent rod and the lower surface of the second bent rod cross, overlap and press against each other, a screw is fixedly arranged on the upper surface of the second bent rod, the upper end of the screw passes through the first bent rod, the outer periphery of the first bent rod is threadedly connected to the nut, and the lower surface of the nut presses against the first bent rod.

[0008] Preferably, a recessed portion is provided on the outer surface of the threaded end, and the recessed portion increases the friction with the hand to prevent slipping.

[0009] Preferably, a No. 1 groove is provided at one end of the threaded end, a No. 1 sealing ring is embedded in the No. 1 groove, and the outer wall of the No. 1 sealing ring and the inner wall of the No. 1 groove are pressed against each other, thereby increasing the sealing performance between the No. 1 sealing ring and the equipment pipeline.

[0010] Preferably, the inner wall of the threaded end is provided with an internal thread, and the threaded end is conveniently connected to the equipment through the internal thread.

[0011] Preferably, an interlocking groove is provided on the inner wall of the mating port, and a third groove is also provided on the inner wall of the mating port, and the interlocking groove can be used to connect with the external butt tube.

[0012] Preferably, a No. 2 sealing ring is embedded in the No. 3 groove, and the outer surface of the No. 2 sealing ring is pressed against the inner wall of the No. 3 groove, so that the sealing performance with the butt joint is increased by the No. 2 sealing ring.

[0013] Preferably, a No. 2 groove is provided on the upper surface of the bellows, and a clamp is sleeved in the No. 2 groove. The inner walls at both ends of the bellows are respectively pressed against the outer surfaces of the threaded end and the matching port. The clamp facilitates the disassembly of the bellows, thereby increasing the convenience of maintenance.

[0014] Preferably, a circular block is integrally provided on the upper surface of the screw rod, and the lower surface of the screw rod is welded to the upper surface of the second crankshaft, so that the screw rod facilitates the rotation between the second crankshaft and the first crankshaft.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model can realize flexible change of the pneumatic joint angle by horizontally moving the mating port left and right, and the movement of the mating port will drive the bellows to bend freely, thereby avoiding frequent replacement of the pneumatic joint and reducing the use cost;

[0017] The utility model provides a positioning mechanism on the upper surface of the bellows for locking the angle of the pneumatic joint. After the ideal angle is determined, the nut can be screwed to make the lower surface of the nut tightly abut against the upper surface of the first curved rod, and the second curved rod and the first curved rod are tightly abutted against each other and will not rotate, thereby locking the angle of the bellows after bending, thereby achieving the effect of positioning the pneumatic joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the positioning mechanism structure of the utility model;

[0020] Figure 3 It is a left side schematic diagram of the utility model;

[0021] Figure 4 It is an enlarged schematic diagram of point a of the present utility model.

[0022] In the figure: 1. threaded end; 2. mating port; 3. bellows; 4. positioning mechanism; 401. bent rod No. 1; 402. bent rod No. 2; 403. screw rod; 404. nut; 5. recessed portion; 6. groove No. 1; 7. sealing ring No. 1; 8. internal thread; 9. groove No. 2; 10. clamp; 11. fitting groove; 12. groove No. 3; 13. sealing ring No. 2. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] like Figures 1 to 4 As shown, a pneumatic joint includes a threaded end 1 and a mating port 2, a bellows 3 is detachably fixedly arranged between the threaded end 1 and the mating port 2, a positioning mechanism 4 is fixedly arranged on the upper surface of the bellows 3; the positioning mechanism 4 includes a first curved rod 401, a second curved rod 402, a screw 403 and a nut 404, the lower surfaces of the first curved rod 401 and the second curved rod 402 are respectively fixedly arranged on the upper surface of the bellows 3, the lower surface of the first curved rod 401 and the lower surface of the second curved rod 402 cross and overlap each other and press tightly, the upper surface of the second curved rod 402 is fixedly arranged with a screw 403, the upper end of the screw 403 passes through the first curved rod 401, the outer periphery of the first curved rod 401 is threadedly connected to the nut 404, and the lower surface of the nut 404 presses tightly against the first curved rod 401. A recess 5 is provided on the outer surface of the threaded end 1. The upper surface of the screw rod 403 is integrally provided with a circular block, and the lower surface of the screw rod 403 is welded to the upper surface of the second curved rod 402. A first groove 6 is provided at one end of the threaded end 1, and a first sealing ring 7 is embedded in the first groove 6, and the outer wall of the first sealing ring 7 is pressed against the inner wall of the first groove 6. An internal thread 8 is provided on the inner wall of the threaded end 1. An interlocking groove 11 is provided on the inner wall of the matching port 2, and a third groove 12 is also provided on the inner wall of the matching port 2. A second sealing ring 13 is embedded in the third groove 12, and the outer surface of the second sealing ring 13 is pressed against the inner wall of the third groove 12.

[0026] It should be noted that the recessed portion 5 can be a groove or a concave hole. The bellows 3 is made of soft rubber and is integrally formed by a mold during production. Steel wire can be added to the body of the bellows 3 to ensure flexibility and improve firmness. The lower surfaces of the first curved rod 401 and the second curved rod 402 can be fixedly connected to the upper surface of the matching port 2 by rivets and threaded ends 1, respectively.

[0027] refer to Figure 1 , Figure 3 , Figure 4 In the present application, a second groove 9 is provided on the upper surface of the bellows 3, and a clamp 10 is sleeved in the second groove 9. The inner walls at both ends of the bellows 3 are respectively pressed against the outer surfaces of the threaded end 1 and the matching port 2. Through the above scheme, the clamp 10 is an iron ring, and a bolt is provided at its port. The clamp 10 can be tightened on the bellows 3 by screwing the bolt so that it can be installed with the threaded end 1 and the matching port 2. When disassembling, the bellows 3 can be quickly disassembled by removing the clamp 10.

[0028] Working principle of a pneumatic joint:

[0029] First, the threaded end 1 can be connected to the threaded pipe in the external equipment through the internal thread 8 set on its inner wall. After the threaded end 1 is connected to the equipment, the No. 1 sealing ring 7 increases the sealing performance between the threaded end 1 and the equipment. Then, it can be directly connected to the matching port 2 through the external butt joint pipe. The fitting groove 11 is used to clamp with the convex ring of the butt joint pipe to ensure the firmness of the butt joint pipe and the matching port 2. At the same time, the No. 2 sealing ring 13 can ensure the sealing performance between the butt joint pipe and the matching port 2.

[0030] In the initial state, the lower surface of the nut 404 in the positioning mechanism 4 is pressed against the upper surface of the first curved rod 401, so that the first curved rod 401 and the second curved rod 402 are pressed against each other and cannot rotate, thereby ensuring that the bellows 3 will not bend;

[0031] When the curvature of the bellows 3 needs to be changed, the nut 404 can be loosened so that the nut 404 moves up and no longer presses against the upper surface of the No. 1 bent rod 401. At this time, the No. 1 bent rod 401 and the No. 2 bent rod 402 are no longer pressed against each other, and the matching port 2 can be moved horizontally left and right. After the matching port 2 is moved, the No. 2 bent rod 402 will be driven to rotate under the No. 1 bent rod 401. At the same time, the rotation of the matching port 2 will drive the bellows 3 to bend freely. After determining the ideal angle, the nut 404 can be turned back to its original position again, so that the lower surface of the nut 404 is once again pressed against the upper surface of the No. 1 bent rod 401, so that the No. 2 bent rod 402 and the No. 1 bent rod 401 are pressed against each other and will not rotate, thereby locking the angle of the bent bellows 3 and realizing the angle change of the pneumatic joint, thereby avoiding frequent replacement of the pneumatic joint and reducing the cost of use.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A pneumatic joint, comprising a threaded end (1) and a mating port (2), characterized in that: A bellows (3) is detachably fixedly disposed between the threaded end (1) and the mating port (2), and a positioning mechanism (4) is fixedly disposed on the upper surface of the bellows (3); The positioning mechanism (4) comprises a first curved rod (401), a second curved rod (402), a screw rod (403) and a nut (404); the lower surfaces of the first curved rod (401) and the second curved rod (402) are respectively fixedly arranged on the upper surface of the bellows (3); the lower surface of the first curved rod (401) and the lower surface of the second curved rod (402) are mutually crossed, overlapped and pressed tightly; the upper surface of the second curved rod (402) is fixedly arranged with a screw rod (403); the upper end of the screw rod (403) passes through the first curved rod (401); the outer periphery of the first curved rod (401) is threadedly connected to the nut (404); the lower surface of the nut (404) is pressed tightly against the first curved rod (401).

2. The pneumatic joint according to claim 1, characterized in that: The outer surface of the threaded end (1) is provided with a recessed portion (5).

3. The pneumatic joint according to claim 1 or 2, characterized in that: A first groove (6) is provided at one end of the threaded end (1), a first sealing ring (7) is embedded in the first groove (6), and the outer wall of the first sealing ring (7) and the inner wall of the first groove (6) are tightly pressed against each other.

4. The pneumatic joint according to claim 3, characterized in that: The inner wall of the threaded end (1) is provided with an internal thread (8).

5. The pneumatic joint according to claim 1, characterized in that: The inner wall of the matching port (2) is provided with an engaging groove (11), and the inner wall of the matching port (2) is also provided with a third groove (12).

6. The pneumatic joint according to claim 5, characterized in that: A No. 2 sealing ring (13) is embedded in the No. 3 groove (12), and the outer surface of the No. 2 sealing ring (13) and the inner wall of the No. 3 groove (12) are pressed against each other.

7. The pneumatic joint according to claim 1, characterized in that: A second groove (9) is provided on the upper surface of the bellows (3), a clamp (10) is sleeved in the second groove (9), and the inner walls at both ends of the bellows (3) are respectively pressed against the outer surfaces of the threaded end (1) and the matching port (2).

8. The pneumatic joint according to claim 1, characterized in that: A circular block is integrally provided on the upper surface of the screw rod (403), and the lower surface of the screw rod (403) is welded to the upper surface of the second curved rod (402).

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