Quick-connection pipe joint structure

Abstract

The utility model relates to the technical field of pipe joints, and discloses a quick-connection pipe joint structure which comprises a first pipeline, one end of the first pipeline is fixedly connected with a first threaded pipe, a clamping notch is formed in the outer wall of the first threaded pipe, a second pipeline is arranged on the right side of the first pipeline, and a clamping groove is formed in the outer wall of the second threaded pipe. A first threaded pipe is fixedly connected to the outer wall of the first pipeline, a second threaded pipe is fixedly connected to the outer wall of the second pipeline, and an inner extending pipe is fixedly connected to the side, away from the second pipeline, of the second threaded pipe. When a limiting stopper on the device is in butt joint with an inner cavity of an inner clamping notch, the position of the limiting stopper is rotated by 45 degrees, the limiting stopper is clamped in the inner wall of the clamping notch, a first threaded pipe and a fixed shell are in threaded connection through the fixed shell, and therefore a first pipeline and a second pipeline on the device are rapidly connected, and the connecting structure is simplified and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joints, in particular to a quick-connect pipe joint structure. Background Art

[0002] Pipe joints are parts that connect pipes in hydraulic systems or install pipes on hydraulic components. They play a detachable connection role in the fluid path.

[0003] The existing quick-connect pipe joint structure can refer to the Chinese utility model patent with the authorization announcement number CN204785214U, which discloses a quick-connect joint, "including a retaining ring sleeved inside the joint body, one end of the retaining ring is against the "O" type sealing ring, and the other end is against the claw, the claw is made of steel teeth and the claw body injection molded as a whole, when the pipe penetrates into the joint body, the steel teeth will be tightly clamped with the outer wall of the pipe under the action of internal pressure, at least four notches are opened on the claw, the outer ring of the steel teeth is provided with a boss, the boss has a slope, and the opening width of the bottom end of the notch is greater than the opening width of the top end of the notch."

[0004] When the above device is in use, the existing device improves the existing quick-connect joint, simplifies the structure, is easy to operate, has low production costs, and improves production efficiency. However, there is still complexity in the internal and external structures of the joint, which makes it difficult to avoid the difficulty of making the claws during production. Therefore, while maintaining the quick connection effect of the joint, it is also necessary to simplify the structure of the joint to facilitate production. In addition, the existing device does not take effective measures to solve the sealing problem at the joint, and the joint structure often requires more attention to the sealing. Therefore, a quick-connect pipe joint structure that solves the above problems is needed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a quick-connect pipe joint structure, which has the advantages of strong practicality, quick connection, increased sealing, etc., and solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a quick-connect pipe joint structure, comprising a pipe one, one end of the pipe one is fixedly connected to a threaded pipe one, the outer wall of the threaded pipe one is provided with a clamping groove, a pipe two is provided on the right side of the pipe one, the outer wall of the pipe two is fixedly connected to the threaded pipe two, the side of the threaded pipe two away from the pipe two is fixedly connected to an inner extension pipe, the outer wall of the inner extension pipe is provided with a limiter, the outer wall of the pipe one is movably sleeved with a fixed outer shell, the inner cavity of the fixed outer shell is sleeved with an inner rubber layer, the outer wall of the pipe two is provided with a reinforcement head, and the outer wall of the threaded pipe two is sleeved with an outer rubber layer.

[0007] As a preferred technical solution of the utility model, the number of the clamping notches is two, and the two clamping notches are symmetrically arranged on the outer wall of the threaded tube one.

[0008] As a preferred technical solution of the present utility model, the number of the limiters is two, and the two limiters correspond one to one to the positions of the two engaging notches.

[0009] As a preferred technical solution of the utility model, the inner wall of the threaded pipe 1 is sleeved with the outer wall of the inner extension pipe, and the pipe 1 and the pipe 2 are moved closer to the middle.

[0010] As a preferred technical solution of the utility model, the inner wall of the fixed shell is provided with an internal thread, and the fixed shell is connected to the outer walls of the threaded tube 1 and the threaded tube 2 through the internal thread.

[0011] As a preferred technical solution of the utility model, the inner rubber layer and the outer rubber layer are made of high-elastic polymer, and the diameters of the inner rubber layer and the outer rubber layer are different.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The quick-connect pipe joint structure uses a fixed shell and threaded pipe 1, threaded pipe 2, a clamping groove, and a stopper on the device in coordination with each other, so that when the stopper on the device is docked with the inner cavity of the inner clamping groove, the position of the stopper is rotated 45 degrees so that the stopper is clamped in the inner wall of the clamping groove, and the threaded pipe 1 and the fixed shell are threadedly connected by the fixed shell, so that the pipe 1 and the pipe 2 on the device can be quickly connected, and the connection structure is simplified and convenient.

[0014] 2. The quick-connect pipe joint structure is used in coordination with the fixed shell, inner rubber layer and outer rubber layer, threaded pipe No. 2 and reinforcing head on the device, so that the inner rubber layer on the device is arranged in the inner cavity of the fixed shell, and when the fixed shell is rotatably sleeved on the outer wall of the threaded pipe No. 2, the outer wall of the fixed shell pushes the outer rubber layer to be squeezed toward the side of the reinforcing head, so that the inner rubber layer and the outer rubber layer on the device increase the sealing effect on the inner cavity of the fixed shell and the outer wall of the threaded pipe No. 2, thereby preventing the liquid in the pipe from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the fixed shell structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the device of the utility model.

[0019] In the figure: 1. Pipe 1; 2. Threaded pipe 1; 3. Snap-in groove; 4. Pipe 2; 5. Threaded pipe 2; 6. Inner extension pipe; 7. Stopper; 8. Fixed shell; 9. Inner rubber layer; 10. Reinforcement head; 11. Outer rubber layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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 in 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.

[0021] See also Figure 1-Figure 4 A quick-connect pipe joint structure includes a pipe 1, one end of the pipe 1 is fixedly connected to a threaded pipe 2, the outer wall of the threaded pipe 2 is provided with a clamping notch 3, the right side of the pipe 1 is provided with a pipe 2, the outer wall of the pipe 2 4 is fixedly connected to a threaded pipe 2 5, the side of the threaded pipe 2 5 away from the pipe 2 4 is fixedly connected to an inner extension pipe 6, the outer wall of the inner extension pipe 6 is provided with a stopper 7, the outer wall of the pipe 1 is movably sleeved with a fixed shell 8, the inner cavity of the fixed shell 8 is sleeved with an inner rubber layer 9, and the outer wall of the pipe 2 4 is provided with a reinforcement head 1 0, the outer wall of the threaded tube 2 5 is sleeved with an outer rubber layer 11, and the fixed shell 8 on the device and the threaded tube 1 2, the threaded tube 2 5, the clamping groove 3, and the stopper 7 are used in coordination with each other, so that when the stopper 7 on the device is docked with the inner cavity of the inner clamping groove 3, the position of the stopper 7 is rotated 45 degrees, so that the stopper 7 is clamped in the inner wall of the clamping groove 3, and the threaded tube 2 and the fixed shell 8 are threadedly connected by the fixed shell 8, so that the pipe 1 on the device and the pipe 2 4 are quickly connected, and the connection structure is simplified and convenient.

[0022] In a preferred embodiment, the number of the snap-in slots 3 is two, and the two snap-in slots 3 are symmetrically arranged on the outer wall of the threaded tube 2. Through the two snap-in slots 3 on the device, when the two snap-in slots 3 on the device are opened on the outer wall of the threaded tube 2, the L-shaped snap-in slot 3 is used to provide conditions for the docking of the limiter 7, so that the limiter 7 on the device can be smoothly docked into the inner wall of the snap-in slot 3.

[0023] In a preferred embodiment, there are two limiters 7, and the two limiters 7 correspond to the positions of the two snap-in slots 3 one by one. Through the two limiters 7 on the device, the limiter 7 on the device is connected to the inner wall of the snap-in slot 3 on the outer wall of the inner extension tube 6, and the limiter 7 is rotated into the inner wall of the snap-in slot 3, so that the limiter 7 on the device is snap-fitted with the inner wall of the snap-in slot 3.

[0024] In a preferred embodiment, the inner wall of the threaded tube 2 is sleeved with the outer wall of the inner extension tube 6, and the pipe 1 and the pipe 2 4 are moved closer to the middle. The inner wall of the threaded tube 2 on the device is sleeved with the outer wall of the inner extension tube 6, so that when the pipe 2 4 and the pipe 1 on the device are close to each other, the inner wall of the threaded tube 2 is sleeved with the outer wall of the inner extension tube 6, so that the inner walls of the pipe 1 and the pipe 2 4 on the device overlap, thereby making the inner cavity diameter remain consistent.

[0025] In a preferred embodiment, the inner wall of the fixed shell 8 is provided with an internal thread, and the fixed shell 8 is connected to the outer walls of the threaded pipe 1 2 and the threaded pipe 2 5 through the internal thread. The inner wall of the fixed shell 8 on the device is provided with an internal thread, so that the fixed shell 8 on the device uses the internal thread to engage with the outer walls of the threaded pipe 1 2 and the threaded pipe 2 5, so that the device is connected to the threaded pipe 2 5 and the threaded pipe 1 2 at the same time through the fixed shell 8, and then the pipe 1 1 and the pipe 2 4 are threadedly connected.

[0026] In a preferred embodiment, the inner rubber layer 9 and the outer rubber layer 11 are made of highly elastic polymers, and the diameters of the inner rubber layer 9 and the outer rubber layer 11 are different. Due to the characteristics of the inner rubber layer 9 and the outer rubber layer 11 on the device being highly elastic polymers, the inner rubber layer 9 and the outer rubber layer 11 on the device are elastic and can produce a large deformation under a very small external force, and can return to their original state after the external force is removed, so that the inner rubber layer 9 on the device is in the inner cavity of the fixed shell 8, and the outer rubber layer 11 increases the sealing effect on the outer wall of the threaded tube 5.

[0027] Working principle: first, the fixed shell 8 on the device and the threaded pipe 1 2, the threaded pipe 2 5, the clamping slot 3, and the stopper 7 are used in coordination with each other, so that when the stopper 7 on the device is docked with the inner cavity of the clamping slot 3, the position of the stopper 7 is rotated 45 degrees, so that the stopper 7 is clamped in the inner wall of the clamping slot 3, and the threaded pipe 1 2 and the fixed shell 8 are connected by thread, so that the pipe 1 on the device and the pipe 2 4 are quickly connected, and the connection structure is simplified and convenient, and then the fixed shell 8 on the device is fixed. The outer shell 8, the inner rubber layer 9 and the outer rubber layer 11, the threaded tube 5, and the reinforcing head 10 are used in coordination with each other, so that the inner rubber layer 9 on the device is set in the inner cavity of the fixed outer shell 8, and when the fixed outer shell 8 is rotated and sleeved on the outer wall of the threaded tube 5, the outer wall of the fixed outer shell 8 pushes the outer rubber layer 11 to be squeezed toward the side of the reinforcing head 10, so that the inner rubber layer 9 and the outer rubber layer 11 on the device increase the sealing effect on the inner cavity of the fixed outer shell 8 and the outer wall of the threaded tube 5, thereby preventing the liquid in the tube from overflowing.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-connect pipe joint structure, comprising a pipe (1), characterized in that: One end of the pipe one (1) is fixedly connected to a threaded pipe one (2), the outer wall of the threaded pipe one (2) is provided with a snap-in notch (3), the right side of the pipe one (1) is provided with a pipe two (4), the outer wall of the pipe two (4) is fixedly connected to a threaded pipe two (5), the side of the threaded pipe two (5) away from the pipe two (4) is fixedly connected to an inner extension pipe (6), the outer wall of the inner extension pipe (6) is provided with a stopper (7), the outer wall of the pipe one (1) is movably sleeved with a fixed outer shell (8), the inner cavity of the fixed outer shell (8) is sleeved with an inner rubber layer (9), the outer wall of the pipe two (4) is provided with a reinforcement head (10), and the outer wall of the threaded pipe two (5) is sleeved with an outer rubber layer (11).

2. A quick-connect pipe joint structure according to claim 1, characterized in that: The number of the clamping notches (3) is two, and the two clamping notches (3) are symmetrically arranged on the outer wall of the threaded tube (2).

3. A quick-connect pipe joint structure according to claim 1, characterized in that: The number of the limiters (7) is two, and the two limiters (7) correspond one to one to the positions of the two clamping notches (3).

4. A quick-connect pipe joint structure according to claim 1, characterized in that: The inner wall of the threaded pipe 1 (2) is sleeved with the outer wall of the inner extension pipe (6), and the pipe 1 (1) and the pipe 2 (4) are moved closer to the middle.

5. The quick-connect pipe joint structure according to claim 1, characterized in that: The inner wall of the fixed shell (8) is provided with an internal thread, and the fixed shell (8) is connected to the outer walls of the threaded pipe 1 (2) and the threaded pipe 2 (5) via the internal thread.

6. A quick-connect pipe joint structure according to claim 1, characterized in that: The inner rubber layer (9) and the outer rubber layer (11) are made of a high-elastic polymer, and the diameters of the inner rubber layer (9) and the outer rubber layer (11) are different.

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