Quick insertion type buckling and pressing connector

Abstract

The utility model discloses a quick-plug type buckling connector, which comprises a connector, a buckling sleeve and a hose, the head of the hose is sleeved at the tail end of the connector, the buckling sleeve is arranged outside the connector and the hose and is used for tightly pressing the hose on the surface of the tail end of the connector, a first conical surface is arranged at the tail end of the connector, and a second conical surface is arranged at the tail end of the connector. Compared with the prior art, the quick insertion type buckling and pressing connector has the advantages that the pressing sleeve and the limiting baffle ring are arranged, and the pressing sleeve is pushed to press a hose on the surface of the connector through threaded connection of the pressing sleeve and the limiting baffle ring; relative rotation between the hose and the buckling sleeve is effectively avoided, abrasion is reduced, in addition, when the pressing sleeve rotates, the clamping block is pushed to move towards the inner side of the buckling sleeve, the hose is pressed in the clamping groove, friction force between the hose and the connector is further increased, connection tightness is guaranteed, and the hose is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of crimping joints, in particular to a quick-insert type crimping joint. Background Art

[0002] A crimping joint is a part for connecting pipelines, valves and other fluid systems, and it is usually used for sealing and leak prevention. This joint ensures a tight connection through crimping, thereby preventing leakage and external impurities from entering the system.

[0003] After retrieval, for a Chinese utility model patent with the application number 202123086591.3, an environment-friendly crimping joint, during use, first, the crimping sleeve is sleeved on the hose, then one end of the hose is sleeved on the insertion pipe, and then the crimping sleeve is threadedly connected to the outside of the connector. At this time, the snap ring on the outside of the insertion pipe is located inside the hose, causing the hose to elastically deform and bulge, and the locking ring on the circumferential side of the inner wall of the crimping sleeve will cooperate with the snap ring to squeeze the hose, thereby sealing the hose.

[0004] Regarding the above-mentioned prior art, the inventor believes that when the crimping sleeve is threadedly connected to the connector and the crimping sleeve is rotated, relative rotation will occur between the crimping sleeve and the hose. This relative rotation will cause the inner wall of the crimping sleeve to rub against the surface of the hose, and in severe cases, it may even cause the hose to twist. Summary of the Utility Model

[0005] In view of the above situation, to overcome the defects of the prior art, the utility model provides a quick-insert type crimping joint to solve the above problems.

[0006] To achieve the above purpose, a quick-insert type crimping joint of the utility model includes a connector, a crimping sleeve and a hose. The head of the hose is sleeved on the tail end of the connector. The crimping sleeve is arranged outside the connector and the hose to press the hose against the surface of the tail end of the connector. The tail end of the connector is provided with a first conical surface, and the inner wall of the crimping sleeve is provided with a second conical surface. The hose is pressed between the first conical surface and the second conical surface. A pressing sleeve is rotatably arranged outside the crimping sleeve. A limiting retaining ring is integrally formed on the side of the connector close to the head. The inner wall of the pressing sleeve is threadedly connected to the outer wall of the limiting retaining ring, and a blocking block is integrally formed at one end of the pressing sleeve away from the limiting retaining ring. The blocking block is in close contact with the rear end of the crimping sleeve. An opening is formed through the side of the crimping sleeve, and a clamping block is slidably arranged in the opening. A clamping groove is embedded on the surface of the connector. A first inclined surface is provided at one end of the clamping block away from the clamping groove, and a second inclined surface is provided on the inner wall of the pressing sleeve.

[0007] Preferably, a sealing ring is sleeved on the tail end of the connector head, and the sealing ring is clamped between the limiting retaining ring and the head of the hose.

[0008] Preferably, the outer contour of the cross-section of the pressing sleeve is a regular polygon structure.

[0009] Preferably, a limiting block is integrally formed between the clamping block and the pressing sleeve.

[0010] Preferably, the number of the clamping blocks is at least three, and the clamping blocks are arranged equidistantly around the axis of the crimping sleeve.

[0011] Compared with the prior art, the present utility model has the following advantages: The quick-insert crimping joint of the present utility model, by arranging the pressing sleeve and the limiting retaining ring, uses the threaded connection of the pressing sleeve and the limiting retaining ring to push the crimping sleeve to press the hose against the surface of the connector head, effectively avoiding the relative rotation between the hose and the crimping sleeve, reducing wear. In addition, when the pressing sleeve rotates, it will push the clamping block to move towards the inside of the crimping sleeve, pressing the hose in the clamping groove, further increasing the friction between the hose and the connector head, ensuring the tightness of the connection, and preventing the loosening of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0013] Figure 1 is a schematic cross-sectional structure diagram of the present utility model.

[0014] Figure 2 is an exploded structure diagram of the present utility model.

[0015] Figure 3 is a schematic internal structure diagram of the present utility model.

[0016] In the figure: 10, connector head; 101, first conical surface; 11, limiting retaining ring; 12, clamping groove; 20, hose; 30, crimping sleeve; 301, second conical surface; 31, opening; 40, pressing sleeve; 401, second inclined surface; 41, stop block; 50, seal; 60, clamping block; 601, first inclined surface; 61, limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes in detail the specific embodiments of the present utility model with reference to the attached Figures 1-3 drawings.

[0018] From Figures 1-3Provided is a quick-insert clamping joint of the utility model, which includes a connector 10, a clamping sleeve 30 and a hose 20. The head of the hose 20 is sleeved on the tail end of the connector 10, and the clamping sleeve 30 is arranged outside the connector 10 and the hose 20 for pressing the hose 20 against the surface of the tail end of the connector 10. In the prior art, when connecting the hose 20 to the connector 10, the hose 20 is sleeved on the tail end of the connector 10, and then the clamping sleeve 30 is directly threadedly connected to the connector 10, so that the hose 20 is pressed against the surface of the connector 10. In this way, not only will there be relative displacement in the axial direction between the clamping sleeve 30 and the hose 20, but also relative displacement in the circumferential direction will occur due to the rotation of the clamping sleeve 30. Because the hose 20 is pressed between the clamping sleeve 30 and the connector 10, the friction force between the two is very large, so that when the clamping sleeve 30 rotates, it will cause relatively large wear on the surface of the hose 20, and in severe cases, it will even cause the hose 20 to be distorted.

[0019] In order to avoid the above problems, a first conical surface 101 is provided at the tail end of the connector 10, a second conical surface 301 is provided on the inner wall of the clamping sleeve 30, the hose 20 is pressed between the first conical surface 101 and the second conical surface 301, a pressing sleeve 40 is rotatably arranged outside the clamping sleeve 30, a limiting retaining ring 11 is integrally formed on the side surface of the connector 10 close to the head, the inner wall of the pressing sleeve 40 is threadedly connected to the outer wall of the limiting retaining ring 11, and a block 41 is integrally formed at one end of the pressing sleeve 40 away from the limiting retaining ring 11, and the block 41 is in close contact with the rear end of the clamping sleeve 30.

[0020] During use, first sleeve the hose 20 on the tail end of the connector 10, then sleeve the clamping sleeve 30 and the pressing sleeve 40 outside the connector 10 and the hose 20, and then threadedly connect the front end of the pressing sleeve 40 to the limiting retaining ring 11. When the pressing sleeve 40 is threadedly connected to the limiting retaining ring 11, it will move towards the head direction of the connector 11. During the moving process, the clamping sleeve 30 is pushed towards the head of the connector 10 through the block 41, and the hose 20 is pressed through the second conical surface 301 on the inner wall of the clamping sleeve 30 and the first conical surface 101 on the surface of the connector 10, realizing the quick insertion connection between the connector 10 and the hose 20. Since there is no relative rotation between the clamping sleeve 30 and the hose 20 when the clamping sleeve 30 presses the hose 20, and there is only the pressing force of the second conical surface 301 pressing the hose 20 against the first conical surface 101, the wear of the clamping sleeve 30 on the hose 20 can be reduced.

[0021] In order to make the connection between the hose 20 and the connector 10 more firm, an opening 31 is provided through the side surface of the crimping sleeve 30. A clamping block 60 is slidably arranged in the opening 31. A clamping groove 12 is embedded on the surface of the connector 10. A first inclined surface 601 is arranged at one end of the clamping block 60 away from the clamping groove 12. A second inclined surface 401 is arranged on the inner wall of the pressing sleeve 40. When the pressing sleeve 40 is threadedly connected to the limit retaining ring 11, the second inclined surface 401 will generate a driving force on the first inclined surface 601 at one end of the clamping block 60. This driving force has a component force towards the opening 31. This component force causes the clamping block 60 to move towards the inner side of the crimping sleeve 30 in the opening 31, thereby squeezing the part of the hose 20 at this position into the clamping groove 12, making the connection between the hose 20 and the connector 10 more firm.

[0022] In order to improve the sealing effect of the connection between the hose 20 and the connector 10, a sealing ring 50 is sleeved at the tail end of the connector 10, and the sealing ring 50 is clamped between the limit retaining ring 11 and the head of the hose 20.

[0023] In order to facilitate the rotation of the pressing sleeve 40, the outer contour of the cross-section of the pressing sleeve 40 is a regular polygon structure, which is convenient to rotate the pressing sleeve 40 with tools such as a wrench.

[0024] In some embodiments, a limiting block 61 is integrally formed between the crimping sleeve 30 and the pressing sleeve 40 where the clamping block 60 is located.

[0025] The number of the clamping blocks 60 is at least three, and the clamping blocks 60 are arranged equidistantly around the axis of the crimping sleeve 30.

[0026] The quick-insert connector of the present invention designs a method to solve the problems existing in the traditional connection method. In the traditional connection method, the relative rotation between the crimping sleeve 30 and the hose 20 will cause relatively large wear. And in this design, by setting the pressing sleeve 40 and the limit retaining ring 11, the pressing sleeve 40 is used to push the crimping sleeve 20 to press the hose 20, reducing the relative rotation between the crimping sleeve 30 and the hose 20 and reducing the wear. In addition, the design of the clamping block 60 also increases the friction between the hose 20 and the connector 10, further improving the connection stability and preventing the hose 20 from loosening.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick-insert crimping connector, comprising a connector (10), a crimping sleeve (30) and a hose (20), wherein the head of the hose (20) is sleeved on the rear end of the connector (10), and the crimping sleeve (30) is arranged outside the connector (10) and the hose (20) to press the hose (20) against the rear end surface of the connector (10), characterized in that: The tail end of the connector (10) is provided with a first conical surface (101), the inner wall of the crimping sleeve (30) is provided with a second conical surface (301), and the hose (20) is pressed tightly between the first conical surface (101) and the second conical surface (301); The outer rotation of the buckling sleeve (30) is provided with a clamping sleeve (40), the side of the connector (10) close to the head is integrally formed with a limit stop ring (11), the inner wall of the clamping sleeve (40) is threadedly connected to the outer wall of the limit stop ring (11), and the end of the clamping sleeve (40) away from the limit stop ring (11) is integrally formed with a stopper (41), and the stopper (41) is in close contact with the rear end of the buckling sleeve (30); The side surface of the buckling sleeve (30) is penetrated by an opening (31), a snap-in block (60) is slidably provided in the opening (31), a snap-in groove (12) is embedded in the surface of the connecting head (10), a first inclined surface (601) is provided at one end of the snap-in block (60) away from the snap-in groove (12), and a second inclined surface (401) is provided on the inner wall of the compression sleeve (40).

2. A quick-insert crimping connector according to claim 1, characterized in that: The tail end of the connector (10) is sleeved with a sealing ring (50), and the sealing ring (50) is clamped between the limit stop ring (11) and the head of the hose (20).

3. A quick-insert crimping connector according to claim 1, characterized in that: The cross-sectional outer contour of the compression sleeve (40) is a regular polygonal structure.

4. The quick-insert crimping connector according to claim 1, characterized in that: The clamping block (60) is located between the buckling sleeve (30) and the pressing sleeve (40) and is an integrally formed limiting block (61).

5. The quick-insert crimping connector according to claim 1, characterized in that: The number of the clamping blocks (60) is at least three, and the clamping blocks (60) are arranged equidistantly around the axis of the crimping sleeve (30).

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