A press-fit tube inner buckle quick connector

Abstract

The present invention discloses a compression-type tube-inner buckle quick connector, comprising: a connecting sleeve provided with at least two connection ports, wherein one end of each compression-type tube inserted into one of the connection ports is provided with an outer flange; at least two fixing devices, each of which is connected to the connection ports in a one-to-one correspondence and is used to fix the corresponding compression-type tube; wherein each fixing device comprises: a plurality of steel balls, wherein the connection ports are provided with a plurality of stepped holes along the circumferential direction thereof, and each steel ball is movably arranged in a corresponding stepped hole; and a movable sleeve, wherein the inner side surface of the movable sleeve is provided with an inner flange and a clearance groove, and the movable sleeve is movably arranged outside the connection port, and an elastic mechanism is provided between the movable sleeve and the connection port; under normal conditions, the outer flange moves to a position corresponding to the steel ball under the action of the elastic mechanism, so that the steel ball is clamped to the outer flange. The quick connector of the present invention can quickly install and disassemble compression-type tubes, and has high work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connectors, in particular to a compression-type pipe-in-tube quick connector. Background Art

[0002] Traditional pipe fittings typically utilize threaded connections, but these can be difficult to install, require hard-to-find tools, and offer unreliable seals. In particular, each installation requires significant time to tighten the screws. In compression-type pipe connections, the ends of the pipes are fitted with external flanges. These connections often utilize sealing hoses and clamps, making installation and removal difficult and inefficient.

[0003] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0004] The object of the present invention is to provide a compression-type tube-internal buckle quick connector, thereby overcoming the shortcomings of the existing compression-type tubes, such as difficulty in installation and removal and low working efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides a compression-type tube-inner buckle quick connector, comprising: a connecting sleeve, which is provided with at least two connecting ports, all of which are interconnected, each of which is used to be plugged into a compression-type tube, and one end of each compression-type tube inserted into the connecting port is provided with an outer flange, and a sealing member is provided between each compression-type tube and the connecting port; at least two fixing devices, which are connected to the connecting ports in a one-to-one correspondence and are used to fix the corresponding compression-type tube; wherein each of the fixing devices comprises: a plurality of steel balls, a plurality of step holes are opened on the connecting port along its circumferential direction, the step holes correspond to the steel balls in a one-to-one correspondence, and each of the steel balls is movably arranged in the corresponding The movable sleeve is provided with an inner flange and a clearance groove on its inner side, and the movable sleeve is movably sleeved outside the connecting port, and an elastic mechanism is provided between the movable sleeve and the connecting port; when the movable sleeve is not subjected to external force, the elastic mechanism causes the inner flange to move to a position corresponding to the steel ball, so that each of the steel balls moves toward the direction of the clamping tube and clamps the outer flange; when the movable sleeve is subjected to an external force greater than the force of the elastic mechanism, the movable sleeve can overcome the force of the elastic mechanism and move to a position where the clearance groove corresponds to the steel ball, so that each of the steel balls can move toward the clearance groove and release its lock with the outer flange.

[0006] Preferably, in the above technical solution, in each of the fixing devices, the inner side surface of the movable sleeve is convexly provided with a limiting boss that can abut against the steel ball, and the movable sleeve is provided with the clearance groove, the inner flange, the limiting boss and the elastic mechanism in sequence from the outside to the inside along its axial direction.

[0007] Preferably, in the above technical solution, in each of the fixing devices, the limiting boss is a spacer structure, and the spacer is sleeved in the movable sleeve and connected thereto with an interference fit.

[0008] Preferably, in the above technical solution, in each of the fixing devices, the elastic mechanism is a spring, the connection port is protruding with a limit block corresponding to the limit boss, and the spring is sleeved between the movable sleeve and the connection port and located between the limit boss and the limit block.

[0009] Preferably, in the above technical solution, in each of the fixing devices, the limit block is a wire retaining ring, the wire retaining ring is fixed on the outer surface of the connecting port, and a gasket is provided between the wire retaining ring and the spring.

[0010] Preferably, in the above technical solution, the inner side surface of each connecting port is provided with a limiting step corresponding to the outer flange of the corresponding press-fit tube, and the outer flange of each press-fit tube is clamped between the corresponding limiting step and the corresponding steel ball.

[0011] Preferably, in the above technical solution, the sealing member is a sealing ring, and a sealing ring is provided between each limiting step and the corresponding outer flange.

[0012] Preferably, in the above technical solution, the outer flange of each of the compression-type tubes is distributed in an arc shape with the convex surface facing outward, and each of the sealing rings is an O-ring.

[0013] Preferably, in the above technical solution, the connecting sleeve is a straight-through structure, a three-way structure or a four-way structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The quick connector of the present invention comprises at least two connecting ports provided on a movable sleeve and at least two fixing devices corresponding to each connecting port. During installation, it is only necessary to move the movable sleeve of the fixing device so that the clearance groove on the movable sleeve corresponds to the steel ball, so that each steel ball can move toward the clearance groove along the corresponding step hole, and then the compression tube is inserted into the connecting port. After that, the force applied to the movable sleeve is released, and the movable sleeve can return to its original position under the action of the elastic mechanism, so that its inner flange corresponds to the steel ball, driving the steel ball to move inward to clamp the outer flange of the compression tube, thereby preventing the compression tube from being separated from the connecting sleeve. Then, all the compression tubes can be connected in sequence in the same way, and the installation process is simple and convenient. During disassembly, it is also necessary to move the movable sleeve of the fixing device so that the clearance groove corresponds to the steel ball, and then the compression tube can be pulled out. The disassembly process is simple and convenient, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a press-fit tube-inner buckle quick connector according to the present invention.

[0017] Description of main reference numerals:

[0018] 1-pressed tube, 2-fixing device, 3-connecting sleeve, 4-allowance groove, 5-movable sleeve, 6-sealing ring, 7-spacer, 8-spring, 9-gasket, 10-wire retaining ring, 11-outer flange, 12-steel ball, 13-limiting step, 14-inner flange, 15-connecting port. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0020] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0021] Figure 1 The schematic diagram of the structure of a press-fit tube 1 inner buckle quick connector according to a preferred embodiment of the present invention is shown, and the quick connector includes a connecting sleeve 3 and at least two fixing devices 2. Figure 1The connecting sleeve 3 is provided with at least two connecting ports 15, all of which are interconnected. Each connecting port 15 is cylindrical and is used to be plugged into a compression tube 1. An outer flange 11 is provided at one end of each compression tube 1 inserted into the connecting port 15, and a seal is provided between each compression tube 1 and the connecting port 15 to prevent the liquid in the tube from overflowing from the gap between the two, thereby improving the connection effect; the fixing device 2 is connected to the connecting port 15 in a one-to-one correspondence, and is used to fix the corresponding compression tube 1 to prevent the compression tube 1 from detaching from the connecting sleeve 3; wherein, each fixing device 2 includes a plurality of steel balls 12 and a movable sleeve 5. In each fixing device 2, a plurality of step holes are opened on the connection port 15 along its circumferential direction, all of which are located on the same circumference, and the step holes correspond to the steel balls 12 one by one, and each steel ball 12 is movably arranged in the corresponding step hole; the inner side surface of the movable sleeve 5 is provided with an inner flange 14 and a clearance groove 4, and the movable sleeve 5 is movably sleeved outside the connection port 15 so that the movable sleeve 5 can move along the connection port 15, and an elastic mechanism is provided between the movable sleeve 5 and the connection port 15; when the movable sleeve 5 is not subjected to external force, the elastic mechanism The elastic mechanism moves the inner flange 14 to a position corresponding to the steel ball 12, so that each steel ball 12 moves toward the compression tube 1 and clamps the outer flange 11, preventing the compression tube 1 from being separated from the connecting sleeve 3; when the external force acting on the movable sleeve 5 is greater than the force of the elastic mechanism, the movable sleeve 5 can overcome the force of the elastic mechanism and move its clearance groove 4 to a position corresponding to the steel ball 12, so that each steel ball 12 can move toward the clearance groove 4 and release its lock with the outer flange 11, so as to facilitate the outward removal of the compression movable sleeve 55. When installing, it is only necessary to move the movable sleeve 5 of the fixing device 2 so that the clearance groove 4 on the movable sleeve 5 corresponds to the steel ball 12, so that each steel ball 12 can move toward the clearance groove 4 along the corresponding step hole, and then the compression tube 1 is inserted into the connecting port 15. Then, the force applied to the movable sleeve 5 is released, and the movable sleeve 5 can return to its original position under the action of the elastic mechanism, so that its inner flange 14 corresponds to the steel ball 12, driving the steel ball 12 to move inward to clamp the outer flange 11 of the compression tube 1, preventing the compression tube 1 from being separated from the connecting sleeve 3, and then all the compression tubes 1 are connected in sequence in the same way. The installation process is simple and convenient. When disassembling, it is also necessary to move the movable sleeve 5 of the fixing device 2 so that the clearance groove 4 corresponds to the steel ball 12, and then pull out the compression tube 1. The disassembly process is simple and convenient, and work efficiency is improved.

[0022] refer to Figure 1Preferably, in each fixing device 2, the inner side surface of the movable sleeve 5 is provided with a limiting boss that can abut against the steel ball 12, and the inward protrusion height of the limiting boss is greater than the inward protrusion height of the inner flange 14, so that the limiting step 13 can abut against the steel ball 12 to prevent the movable sleeve 5 from sliding out of the connecting sleeve 3, wherein the movable sleeve 5 is provided with a clearance groove 4, an inner flange 14, a limiting boss and an elastic mechanism in sequence from the outside to the inside along its axial direction.

[0023] refer to Figure 1 Preferably, in each fixing device 2, the limiting boss is a spacer sleeve 7 structure, and the spacer sleeve 7 is sleeved in the movable sleeve 5 and connected with it by interference fit, so as to slide along the connecting port 15 together with the movable sleeve 5. In each fixing device 2, the elastic mechanism is a spring 8, and the connecting port 15 is provided with a limiting block corresponding to the limiting boss. The spring 8 is sleeved between the movable sleeve 5 and the connecting port 15 and is located between the limiting boss and the limiting block. That is, when viewed along the axial direction of the movable sleeve 5, from the outside to the inside, there are the clearance groove 4, the inner flange 14, the spacer sleeve 7, the spring 8 and the limiting boss, wherein the outer end surface of the spacer sleeve 7 abuts against the inner flange 14 and can abut against the steel ball 12 to prevent the movable sleeve 5 from sliding out of the connecting port 15. Again, further preferably, in each fixing device 2, the limit block is a wire retaining ring 10, the wire retaining ring 10 is fixed on the outer surface of the connecting port 15, and a gasket 9 is provided between the wire retaining ring 10 and the spring 8, so that the spring 8 is clamped between the corresponding spacer 7 and the corresponding gasket 9.

[0024] refer to Figure 1 Preferably, the inner side surface of each connection port 15 is provided with a limiting step 13 corresponding to the outer flange 11 of the corresponding compression tube 1. That is, in each connection port 15, a steel ball 12 and a limiting step 13 are sequentially provided along the axial direction of the connection port 15 from the outside to the inside, so that the outer flange 11 of each compression tube 1 is clamped between the corresponding limiting step 13 and the corresponding steel ball 12. Further preferably, the sealing member is a sealing ring 6, and a sealing ring 6 is provided between each limiting step 13 and the corresponding outer flange 11, wherein the outer flange 11 of each compression tube 1 is distributed in an arc shape with the convex surface facing outward, and each sealing ring 6 is an O-ring 6, so that each O-ring 6 and the corresponding outer flange 11 are in contact and sealed with each other, thereby improving the sealing effect. The inner side surface of each connection port 15 is provided with a groove for installing the O-ring 6 at a position corresponding to the O-ring 6, so as to facilitate the installation of the O-ring 6.

[0025] refer to Figure 1Preferably, the connecting sleeve 3 is a straight-through structure, a three-way structure or a four-way structure to adapt to different connection situations and improve the scope of application. When the connecting sleeve 3 is a straight-through structure, the connecting sleeve 3 is distributed in a straight line, and each end of the connecting sleeve 3 is provided with a connecting port 15, and each connecting port 15 is provided with a fixing device 2 for connecting with two compression-type tubes 1; when the connecting sleeve 3 is a three-way structure, the connecting sleeve 3 is distributed in a T shape, and each end of the connecting sleeve 3 is provided with a connecting port 15, and each connecting port 15 is provided with a fixing device 2 for connecting with three compression-type tubes 1; when the connecting sleeve 3 is a four-way structure, the connecting sleeve 3 is distributed in a cross shape, and each end of the connecting sleeve 3 is provided with a connecting port 15, and each connecting port 15 is provided with a fixing device 2 for connecting with four compression-type tubes 1.

[0026] By using the quick connector of the present invention, the movable sleeve 5 of the fixing device 2 is driven to slide along the corresponding connecting port 15 to install or remove the compression type tube 11 installed on the connecting port 15. The installation and removal process is simple and convenient, and the work efficiency is high.

[0027] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A compression type pipe buckle quick connector, characterized in that: include: A connecting sleeve having at least two connecting ports, all of which are interconnected, each of which is used to connect to a compression tube, one end of each compression tube inserted into the connecting port being provided with an external flange, and a seal being provided between each compression tube and the connecting port; at least two fixing devices, each of which is connected to the connecting port in a one-to-one correspondence and is used to fix the corresponding compression tube; wherein each fixing device comprises: A plurality of steel balls, wherein the connection port is provided with a plurality of stepped holes along its circumferential direction, the stepped holes corresponding to the steel balls one by one, and each steel ball is movably disposed in the corresponding stepped hole; and A movable sleeve, the inner side of which is provided with an inner flange and a give way groove, the movable sleeve is movably sleeved outside the connecting port, and an elastic mechanism is provided between the movable sleeve and the connecting port, the inner side of the movable sleeve is convexly provided with a limiting boss that can abut against the steel ball, the connecting port is convexly provided with a limiting block corresponding to the limiting boss, the inner side of each connecting port is provided with a limiting step corresponding to the outer flange of the corresponding pressing tube, the outer flange of each pressing tube is clamped between the corresponding limiting step and the corresponding steel ball, and a sealing member is provided between the limiting step and the corresponding outer flange; When the movable sleeve is not subjected to external force, the elastic mechanism causes the inner flange to move to a position corresponding to the steel ball, so that each of the steel balls moves toward the clamping tube and clamps the outer flange; when the movable sleeve is subjected to an external force greater than the force of the elastic mechanism, the movable sleeve can overcome the force of the elastic mechanism and move to a position where the clearance groove corresponds to the steel ball, so that each of the steel balls can move toward the clearance groove and release its lock with the outer flange.

2. The compression-type tube-in-tube quick connector according to claim 1, characterized in that: In each of the fixing devices, the movable sleeve is provided with the clearance groove, the inner flange, the limiting boss and the elastic mechanism in sequence from the outside to the inside along the axial direction of the movable sleeve.

3. The compression-type tube-in-tube quick connector according to claim 2, characterized in that: In each of the fixing devices, the limiting boss is a spacer structure, and the spacer is sleeved in the movable sleeve and connected thereto in an interference fit.

4. The compression-type tube-in-tube quick connector according to claim 2, characterized in that: In each of the fixing devices, the elastic mechanism is a spring, and the spring is sleeved between the movable sleeve and the connecting port and located between the limiting boss and the limiting block.

5. The compression-type tube-in-tube quick connector according to claim 4, characterized in that: In each of the fixing devices, the limiting block is a steel wire retaining ring, the steel wire retaining ring is fixed on the outer side surface of the connecting port, and a gasket is provided between the steel wire retaining ring and the spring.

6. The compression-type tube-in-tube quick connector according to claim 1, characterized in that: The sealing member is a sealing ring, and a sealing ring is provided between each limiting step and the corresponding outer flange.

7. The compression-type tube-in-tube quick connector according to claim 6, characterized in that: The outer flange of each of the compression-type tubes is distributed in an arc shape with the convex surface facing outward, and each of the sealing rings is an O-type sealing ring.

8. The compression-type tube-in-tube quick connector according to claim 7, characterized in that: The connecting sleeve is a straight-through structure, a three-way structure or a four-way structure.

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