Pneumatic pipeline connection elbow quick-plug connector

Abstract

The utility model belongs to the technical field of pneumatic pipeline connection, and particularly relates to a pneumatic pipeline connection elbow quick-plug connector which comprises a nylon pipeline, a valve body, an elbow and a nut seat, the two ends of the elbow are a quick-plug connector part and a fixing part respectively, and the nut seat comprises a male end and a threaded connection end. The male end of the nut seat is connected with the fixing part of the elbow through the matching of a groove and an inverted tooth, the threaded connection end of the nut seat is in threaded transmission connection with the valve body, and the nylon pipeline is connected with the quick plug connector part; compared with the prior art, the device provided by the utility model is convenient to install, can be quickly disassembled, adopts a modular structure, and improves the efficiency of maintenance work.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic pipeline connection, in particular to a pneumatic pipeline connection elbow quick-plug connector. Background Art

[0002] Air brake systems are a vital component of modern transportation, widely used in various vehicles to ensure driving safety and improve transportation efficiency. Air brake systems use compressed air as a power source to control vehicle braking, offering high efficiency and reliability. The operating principle of the air brake system is based on compressed air technology. When the engine is running, the air compressor operates, compressing ambient air and storing it in a wet air reservoir. After cooling and oil-water separation within the wet air pipeline, the compressed air is divided into two circuits, flowing to the rear and front brake chambers, respectively. When the driver presses the brake pedal, the brake valve activates, allowing air to enter the brake chamber, applying braking. When the brake pedal is released, the brake valve allows air to enter the engine chamber, releasing the brakes. An air brake system typically consists of several key components: an air compressor, an air reservoir, a brake valve, a relay valve, and a brake cylinder. These components work together to ensure the proper operation and safety of the brake system. The air compressor generates compressed air, the air reservoir stores it, the brake valve controls the flow and pressure of the air, the relay valve accelerates the transfer of the braking medium, and the brake cylinder converts the pressure into braking force. The air brake system's connections between the air compressor, air reservoir, brake valve, relay valve, and brake slave cylinder require nut mounts, connectors, and piping. Currently, the nut mounts are pre-assembled with the valve body and air reservoir, followed by the piping and connectors. Finally, the entire piping and connector assembly is assembled on the production line. This creates stricter requirements for piping length, but in actual production, inappropriate piping lengths can occur, reducing assembly efficiency.

[0003] Currently, there are also systems on the market where the connector and nut holder are pre-assembled, and the entire pipeline is assembled on the production line. However, the connector and nut holder are first assembled on an assembly machine, and then the assembled nut holder connector is assembled to the valve body and air reservoir, and the pipeline is finally assembled on the assembly line. The assembly of the nut holder and connector is difficult to disassemble and difficult to adjust on the final assembly line.

[0004] In response to the above problems, the applicant proposed a solution, which is to install the nut seat separately on the valve body and the air cylinder, then quickly insert the quick-connector into the nut seat, and finally assemble the nylon tube into the quick-connector to complete the final assembly. The nut seat and the quick-connector can be disassembled and assembled through the tooling, and the nylon tube and the quick-connector can also be disassembled and assembled through the tooling. Utility Model Content

[0005] The utility model discloses in view of the deficiency of prior art, develop a kind of pneumatic pipeline connection bend pass quick plug connector, it is convenient to install, can be quickly disassembled, adopt modular structure, improve the efficiency of overhaul work.

[0006] The utility model discloses a technical scheme for solving technical problems: a kind of pneumatic pipeline connection bend pass quick plug connector, including nylon pipeline, valve body, bend pass and nut seat, the both ends of the bend pass are quick plug connector part and fixed part respectively, the quick plug connector part includes release element and snap spring piece, the snap spring piece is arranged in elbow inner wall, the release element is arranged in the side of snap spring piece close to bend pass export;

[0007] The fixed part includes fixed hole and fixed element, the nut seat includes male end and threaded connection end, the fixed hole is arranged on bend pass, the fixed element is provided with the fixed boss matched with the position of fixed hole, the fixed boss is provided with recess, the male end of the nut seat is provided with the ratchet corresponding recess, the male end of the nut seat is connected with the fixed part of bend pass by the cooperation of recess and ratchet, the threaded connection end of the nut seat is connected with valve body by thread, the nylon pipeline is connected with quick plug connector part.

[0008] As preferred, the quick plug connector part is further provided with pipeline support, the pipeline support is installed inside the quick plug connector part, and the pipeline support terminal end is provided with a U-shaped clamping piece.

[0009] As preferred, a first sealing ring is arranged at the U-shaped clamping piece, and the first sealing ring is installed on the side of the snap spring piece inside the bend pass quick plug connector part away from the release assembly.

[0010] As preferred, the fixed holes are arranged in an array on the bend pass, and the fixed bosses are correspondingly arranged on the fixed elements.

[0011] As preferred, the ratchet on the male end of the nut seat is provided with a sealing groove on the side away from the threaded connection end, and a second sealing ring is arranged in the sealing groove.

[0012] As preferred, the sealing groove and the second sealing ring are arranged in an array.

[0013] As preferred, the fixed part of the bend pass is further provided with a limiting clamping seat, and a limiting clamping plate is correspondingly arranged on the fixed element.

[0014] As preferred, the threaded connection end of the nut seat is provided with a third sealing ring on the side close to the male end.

[0015] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model, and the above technical scheme has the following advantages or beneficial effects:

[0016] 1. The utility model discloses a nut seat is divided to the valve body and the bend pass on, can realize the quick assembly disassembly of nut seat and bend pass,

[0017] 2. Through setting up U line fastener at the pipe support end, cooperation first sealing ring can better prevent the leakage,

[0018] 3. Through setting up limit card seat and limit card board, can prevent the fixed element from rotating when disassembling, improved the convenience of disassembly work,

[0019] 4. Through setting up recess and second sealing ring, can prevent the leakage of bend pass fixed part and nut seat male end connection,

[0020] 5. Through setting up third sealing ring at the threaded connection end of nut seat, can prevent the leakage of threaded connection end of nut seat and valve body connection,

[0021] 6. Through setting up snap spring piece and release element, can quickly complete the disassembly of nylon pipeline. DRAWINGS

[0022] Figure 1 It is the front view of the utility model,

[0023] Figure 2 It is Figure 1 The local enlarged view of A area in,

[0024] Figure 3 It is the general structure diagram of the utility model,

[0025] Figure 4 It is the structure diagram of bend pass fixed part of the utility model,

[0026] Figure 5 It is the front view of the utility model nut seat.

[0027] Among them: 1, nylon pipeline, 2, bend pass, 21, fixed hole, 22, limit card seat, 3, nut seat, 31, male end, 32, threaded connection end, 33, reverse tooth, 34, second sealing ring, 35, third sealing ring, 36, sealing groove, 4, valve body, 5, pipe support, 51, U-shaped fastener, 6, first sealing ring, 7, snap spring piece, 8, release element, 9, fixed element, 91, fixed boss, 92, recess, 93, limit card board. DETAILED DESCRIPTION

[0028] In order to clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation mode, and in conjunction with its drawings.

[0029] Example 1

[0030] Referring to Figures 1 to 5A kind of pneumatic pipeline connecting elbow quick connector, including nylon pipeline 1, valve body 4, elbow 2 and nut seat 3, the two ends of the elbow 2 are quick connector part and fixed part respectively, the quick connector part includes release element 8 and snap spring piece 7, the snap spring piece 7 is arranged in elbow inner wall, the release element 8 is arranged in the side of snap spring piece 7 close to elbow 2 export;

[0031] The fixed part includes fixed hole 21 and fixed element 9, the nut seat 3 includes male end 31 and threaded connection end 32, the fixed hole 21 is arranged on elbow 2, the fixed element 9 is provided with fixed boss 91 matched with the position of fixed hole 21, the fixed boss 91 is provided with recess 92, the male end 31 of nut seat 3 is provided with reverse tooth 33 corresponding to recess 92, the male end 31 of nut seat 3 is connected with the fixed part of elbow 2 by the cooperation of recess 92 and reverse tooth 33, the threaded connection end 32 of nut seat 3 is threadedly connected with valve body 4, the nylon pipeline 1 is connected with quick connector part.

[0032] As shown in Figure 1 and Figure 2 , the quick connector part is also provided with pipeline support 5, the pipeline support 5 is installed in the inside of quick connector part, the U-shaped clamp 51 is arranged at the end of the pipeline support 5.

[0033] As shown in Figure 1 and Figure 2 , the first sealing ring 6 is arranged at the U-shaped clamp 51, and the first sealing ring 6 is installed on the side of the snap spring piece 7 in the inside of the quick connector part of the elbow 2 away from the release assembly.

[0034] As shown in Figure 4 , the fixed holes 21 are arranged in array on the elbow 2, and the fixed bosses 91 are correspondingly arranged on the fixed elements 9.

[0035] As shown in Figure 1 and Figure 5 , the male end 31 of the nut seat 3 is provided with sealing groove 36 on the side of the reverse tooth 33 away from the threaded connection end 32, and the second sealing ring 34 is arranged in the sealing groove 36.

[0036] As shown in Figure 1 and Figure 5 , the sealing groove 36 and the second sealing ring 34 are arranged in array.

[0037] As shown in Figure 4 , the fixed part of the elbow 2 is also provided with limit card seat 22, and the limit card plate 93 is correspondingly arranged on the fixed element 9.

[0038] As shown in Figure 1 and Figure 5As shown, a third sealing ring 35 is provided on one side of the threaded connection end 32 of the nut seat 3 close to the male end 31 .

[0039] Principle and operation process

[0040] The release element 8 described in the present invention is an existing one that can clamp the nylon pipe 1 when the nylon pipe 1 is inserted. When the nylon pipe 1 needs to be removed, by pressing the release element 8, the release element 8 moves toward the retaining spring 7 and presses against the retaining spring 7, causing the retaining spring to deform and no longer exert pressure on the nylon pipe 1, so that the nylon pipe 1 can be pulled out. The fixing portion of the bend 2 of the present invention is connected to the male end 31 of the nut seat 3 by the groove 92 on the fixing boss 91 and the inverted teeth 33 of the male end 31 of the nut seat 3. This structure can provide a stable connection force and prevent loosening between components. Multiple fixing holes 21 are arranged in an array on the bend 2 and the corresponding fixing bosses 91, making the connection more uniform and stable. The limit clamp 22 and the limit clamp plate 93 can provide a guiding role during installation and disassembly to prevent the fixing element 9 from rotating and increasing the difficulty of work. At the same time, the threaded connection end 32 of the nut seat 3 is threadedly connected to the valve body 4. The tightening force of the threads further enhances the stability of the entire connection structure, ensuring that it can withstand certain pressures and vibrations in the air brake piping system without leakage or connection failure. The quick-connect fitting utilizes a retaining spring 7 and a release element 8 to achieve a quick plug-in and disconnect connection for the nylon tubing 1. The retaining spring 7 secures the nylon tubing 1 against the inner wall of the elbow. When the nylon tubing 1 needs to be removed, the retaining spring 7 is released by operating the release element 8, allowing for quick removal of the tubing.

[0041] The utility model sets sealing rings in multiple places to ensure the sealing of the air brake pipeline. The first sealing ring 6 at the U-shaped clamp is installed on the side of the retaining spring 7 inside the bend 2 quick connector away from the release component. When the nylon pipe 1 is inserted into the quick connector, the first sealing ring 6 is in close contact with the outer wall of the nylon pipe 1 to prevent gas from leaking from the connection between the pipe and the quick connector. The second sealing ring 34 is set in the sealing groove 36 on the side of the inverted teeth 33 on the male end 31 of the nut seat 3 away from the threaded connection end 32. When the fixed part of the bend 2 is connected to the male end 31 of the nut seat 3, it plays a role in sealing the connection interface between the two and prevents gas from leaking from the gap. The third sealing ring 35 is set on the side of the threaded connection end 32 of the nut seat 3 close to the male end 31. When the nut seat 3 is threadedly connected to the valve body 4, it seals the threaded connection between the two to prevent gas leakage.

[0042] When assembling, first insert the nylon pipe 1 into the quick connector, during the insertion process, the pipe will squeeze the spring sheet 7, the spring sheet 7 will deform due to its elasticity, when the pipe is inserted to a certain depth, the spring sheet 7 restores part of the elasticity, and clamps the nylon pipe 1. At this time, the first sealing ring 6 at the U-shaped clamping part is tightly attached to the outer wall of the nylon pipe 1, forming a preliminary seal to prevent gas leakage. Then align the fixing boss 91 of the fixing element 9 with the fixing hole 21 on the elbow 2, and then insert the male end 31 of the nut seat 3 into the fixing part of the elbow 2, so that the groove 92 on the fixing boss 91 and the reverse tooth 33 of the male end 31 of the nut seat 3 are engaged with each other. Due to the array arrangement of the fixing hole 21 on the elbow 2 and the corresponding arrangement of the fixing boss 91, this connection mode makes the elbow 2 and the nut seat 3 connected firmly and uniformly stressed. During the insertion process, the second sealing ring 34 in the sealing groove 36 on the male end 31 of the nut seat 3 is in close contact with the fixing part of the elbow 2, forming a seal. At the same time, the limiting clamping seat 22 of the fixing part of the elbow 2 and the limiting clamping plate 93 of the fixing element 9 cooperate with each other, further positioning and limiting the relative movement, ensuring the accuracy and stability of the connection. Then align the threaded connection end 32 of the nut seat 3 with the threaded interface of the valve body 4, and then rotate the nut seat 3 to make the threaded connection end 32 and the valve body 4 connected by threaded transmission. As the nut seat 3 is tightened, the third sealing ring 35 on the side close to the male end 31 of the threaded connection end 32 of the nut seat 3 is squeezed between the valve body 4 and the nut seat 3, forming a seal to prevent gas leakage from the threaded connection.

[0043] When the nylon pipe 1 needs to be disassembled, the release element 8 of the quick connector is operated. The release element 8 will exert a force on the spring sheet 7 to deform and loosen the clamping of the nylon pipe 1. At this time, the nylon pipe 1 can be pulled out of the quick connector. If the elbow 2 and the nut seat 3 need to be separated, a special tool can be used to apply appropriate external force to make the reverse tooth 33 of the male end 31 of the nut seat 3 disengage from the groove 92 of the fixing boss 91. During disengagement, care should be taken to avoid damaging the reverse tooth 33 and the groove 92 and related sealing structures. Then rotate the threaded connection end 32 of the nut seat 3 out of the threaded interface of the valve body 4, thereby completing the separation of the nut seat 3 and the valve body 4.

[0044] Through the above operation process, the air brake pipe connection elbow 2 quick connector can effectively realize the quick connection, fixation and sealing between the nylon pipe 1 and the valve body 4, and can be conveniently disassembled and maintained when needed, meeting the installation and use requirements of the air brake pipe system.

[0045] The above describes the specific embodiments of the utility model in combination with the drawings, but is not a limitation on the protection scope of the utility model. Various modifications or variations made by those skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A pneumatic pipeline connection elbow quick connector, comprising a nylon pipeline (1) and a valve body (4), characterized in that; It also includes an elbow (2) and a nut seat (3), wherein the two ends of the elbow (2) are respectively a quick-insert connector portion and a fixed portion, and the quick-insert connector portion includes a release element (8) and a retaining spring (7), wherein the retaining spring (7) is arranged on the inner wall of the elbow, and the release element (8) is arranged on a side of the retaining spring (7) close to the outlet of the elbow (2); The fixing portion includes a fixing hole (21) and a fixing element (9), the nut seat (3) includes a male end (31) and a threaded connection end (32), the fixing hole (21) is provided on the bend (2), the fixing element (9) is provided with a fixing boss (91) matching the position of the fixing hole (21), the fixing boss (91) is provided with a groove (92), the male end (31) of the nut seat (3) is provided with a reverse tooth (33) corresponding to the groove (92), the male end (31) of the nut seat (3) is connected to the fixing portion of the bend (2) through the cooperation of the groove (92) and the reverse tooth (33), the threaded connection end (32) of the nut seat (3) is threadedly connected to the valve body (4), and the nylon pipe (1) is connected to the quick-connect joint.

2. A pneumatic pipeline connection elbow quick-connect connector according to claim 1, characterized in that: The quick-connect connector is further provided with a pipeline support (5), the pipeline support (5) is installed inside the quick-connect connector, and a U-shaped clamp (51) is provided at the end of the pipeline support (5).

3. The pneumatic pipeline connection elbow quick-connect connector according to claim 2, characterized in that: A first sealing ring (6) is provided at the U-shaped clamp (51), and the first sealing ring (6) is installed on a side of the internal retaining spring (7) of the quick-connect joint of the elbow (2) away from the release assembly.

4. The pneumatic pipeline connection elbow quick-connect connector according to claim 1, characterized in that: The fixing holes (21) are arranged in an array on the bend (2), and the fixing bosses (91) are correspondingly arranged on the fixing element (9).

5. The pneumatic pipeline connection elbow quick-connect connector according to claim 1, characterized in that: A sealing groove (36) is provided on the side of the inverted tooth (33) on the male end (31) of the nut seat (3) away from the threaded connection end (32), and a second sealing ring (34) is provided in the sealing groove (36).

6. The pneumatic pipeline connection elbow quick-connect connector according to claim 5, characterized in that: The sealing grooves (36) and the second sealing rings (34) are arranged in an array.

7. The pneumatic pipeline connection elbow quick-connect connector according to claim 1, characterized in that: The fixing portion of the bend (2) is further provided with a limit clamping seat (22), and the fixing element (9) is correspondingly provided with a limit clamping plate (93).

8. The pneumatic pipeline connection elbow quick-connect connector according to claim 1, characterized in that: A third sealing ring (35) is provided on one side of the threaded connection end (32) of the nut seat (3) close to the male end (31).

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