Rotatable connector

Abstract

The rotatable connector comprises a joint, a connecting sleeve, an adapter cylinder, an elastic clamping piece and a pipeline, the connecting sleeve is connected to the end of the joint, a channel communicated with the joint is formed in the adapter cylinder, the adapter cylinder is at least partially embedded in the connecting sleeve, and a circumferential matching groove is formed between the outer circumferential wall of the adapter cylinder and the inner circumferential wall of the connecting sleeve; a penetrating hole communicated with the circumferential matching groove is formed in the connecting sleeve, the elastic clamping piece is embedded into the circumferential matching groove from the penetrating hole so that axial limiting and relative rotation of the adapter barrel and the connecting sleeve can be achieved, the pipeline is connected to the end, away from the connector, of the adapter barrel, and the pipeline is communicated with the channel. The problems that a hose is prone to being twisted, pinned, blocked, damaged and the like during installation due to the fact that the angle orientation of a traditional pipeline elbow connector is fixed are solved.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a rotatable connector. Background Technology

[0002] In applications where installation space is limited and frequent reversals are required, traditional fluid transport pipelines typically use fixed elbow joints to achieve pipeline reversal. These joints are mostly rigid, one-piece structures, meaning the pipeline and joint cannot rotate relative to each other after assembly. This makes it difficult to actively adjust the pipeline direction and angle according to usage requirements, and also fails to compensate for angular errors caused by on-site assembly.

[0003] To force an adaptation to the installation angle, flexible hoses are usually only allowed to be twisted. When the hose has high rigidity or large twisting, it is easy for the hose to twist and become stuck, or for it to be locally flattened. On the one hand, this significantly increases the resistance to fluid flow, and on the other hand, long-term stress can easily cause the hose to fatigue and break, the pipeline to become blocked or even burst, affecting the operational stability and service life of the pipeline system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rotatable connector that solves the problems of traditional pipe bends having a fixed angle, which can easily lead to hose twisting, misalignment, blockage, and damage during installation.

[0005] This invention is achieved through the following technical solution:

[0006] A rotatable connector, comprising:

[0007] Connector;

[0008] A connecting sleeve, which is connected to the end of the connector;

[0009] The adapter tube has a channel inside that communicates with the connector. The adapter tube is at least partially embedded in the connecting sleeve. A circumferential mating groove is formed between the outer peripheral wall of the adapter tube and the inner peripheral wall of the connecting sleeve. The connecting sleeve has an insertion hole that communicates with the circumferential mating groove.

[0010] An elastic clip is inserted into the circumferential mating groove through the insertion hole to achieve axial positioning and relative rotation between the adapter and the connecting sleeve.

[0011] A pipe is connected to the end of the adapter cylinder away from the joint, and the pipe is in communication with the channel.

[0012] Furthermore, the outer peripheral wall of the adapter tube is formed with a first groove, and the inner peripheral wall of the connecting sleeve is provided with a second groove. The first groove and the second groove together constitute the circumferential mating groove.

[0013] The circumferential mating groove is an arc-shaped groove or an annular groove.

[0014] Furthermore, it also includes a locking sleeve, one end of which is engaged with the connector, and the other end of which protrudes radially inward to form a first boss. The outer peripheral surface of the connecting sleeve protrudes radially outward to form a second boss that mates with the first boss. The first boss and the second boss abut against each other in the axial direction of the connecting sleeve to fix the connecting sleeve to the end of the connector.

[0015] Furthermore, the central axis of the insertion hole is tangent to the central circumference of the circumferential mating groove.

[0016] Furthermore, the elastic clip is a flexible steel wire rope. The elastic clip is straight in its free state and is bent and closed when it is embedded in the circumferential mating groove.

[0017] Furthermore, the outer peripheral surface of the connecting sleeve is formed with a flat surface to facilitate clamping by the clamping tool.

[0018] Furthermore, it also includes multiple sealing rings, which abut against the inner peripheral wall of the connecting sleeve and the outer peripheral wall of the adapter cylinder, and the multiple sealing rings are arranged at intervals along the axial direction of the adapter cylinder.

[0019] The outer peripheral wall and / or the inner peripheral wall of the adapter tube are recessed to form an installation groove for receiving the sealing ring.

[0020] Furthermore, one end of the locking sleeve is threadedly connected to the connector.

[0021] Furthermore, the end of the connector near the connecting sleeve has a first conical surface, and the end of the connecting sleeve near the connector has a second conical surface that fits against the first conical surface.

[0022] Furthermore, it also includes a sleeve, which is fitted onto the outer periphery of the adapter tube, and the end of the sleeve near the connector protrudes radially inward to form a limiting platform, and the outer peripheral surface of the adapter tube is radially concave to form a limiting groove that mates with the limiting platform.

[0023] A press-fit groove is formed between the sleeve and the adapter tube. The pipe is a flexible hose. The end of the pipe is press-fitted into the press-fit groove and is tightly fitted to the inner peripheral wall of the sleeve and the outer peripheral wall of the adapter tube, respectively.

[0024] The outer circumferential surface of the adapter tube is provided with a blocking block, which abuts against the end face of the pipe.

[0025] Compared with the prior art, the advantages of this invention are:

[0026] By setting up a fitting structure with elastic clips and circumferential grooves, the axial limiting between the adapter and the connecting sleeve is achieved, ensuring the axial stability of the connection. At the same time, the two can rotate relative to each other around the axis, thus meeting the multi-angle directional installation requirements under complex working conditions. When installing pipes, the orientation of the joint can be adjusted to avoid problems such as pipe twisting, blockage and damage caused by pipe twisting. This enables fast, flexible, reliable and sealed pipe connection in a compact space. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a rotatable connector according to an embodiment of the present invention;

[0028] Figure 2 This is a partial cross-sectional view of a rotatable connector according to an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional view of the connector when the flexible clip is not inserted.

[0030] Figure 4 This is a cross-sectional view of the connector after the flexible card has been inserted.

[0031] Figure 5 This is a schematic diagram of the overall structure of the connector.

[0032] 100, Connector; 110, First conical surface; 200, Connecting sleeve; 210, Second groove; 220, Insertion hole; 230, Flat surface; 240, Second boss; 250, Second conical surface; 300, Adapter sleeve; 301, Channel; 310, First groove; 320, Mounting groove; 330, Limiting groove; 340, Block; 400, Circumferential mating groove; 500, Elastic clip; 600, Pipe; 700, Sealing ring; 800, Locking sleeve; 810, First boss; 900, Sleeve; 910, Limiting platform; 920, Press-fit groove. Detailed Implementation

[0033] The following detailed, non-limiting description of the invention's technical solutions, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0034] like Figure 1 and Figure 2 As shown, a rotatable connector according to an embodiment of the present invention includes a connector 100, a connecting sleeve 200, an adapter cylinder 300, an elastic retainer 500, and a conduit 600. The connecting sleeve 200 is connected to the end of the connector 100. The adapter cylinder 300 has a channel 301 that communicates with the connector 100. The adapter cylinder 300 is at least partially embedded in the connecting sleeve 200, and a circumferential mating groove 400 is formed between the outer peripheral wall of the adapter cylinder 300 and the inner peripheral wall of the connecting sleeve 200. The elastic retainer 500 is embedded in the circumferential mating groove 400 to realize axial positioning and relative rotation of the adapter cylinder 300 and the connecting sleeve 200. The conduit 600 is connected to the end of the adapter cylinder 300 away from the connector 100, and the conduit 600 communicates with the channel 301. The engagement of the elastic clip 500 and the circumferential groove 400 ensures the axial stability between the adapter cylinder 300 and the connecting sleeve 200, and also allows them to rotate relative to each other around the axis. This meets the requirements for multi-angle directional installation under complex working conditions. Since the connector structure is rotatable, the orientation of the connector can be adjusted when installing the pipe 600, avoiding problems such as pipe twisting, blockage and damage caused by pipe twisting. This enables a fast, flexible, reliable and sealed connection in a compact space.

[0035] In this embodiment, the connector 100 has an L-shaped structure and rotates with the adapter cylinder 300 and the connecting sleeve 200, which can meet the requirements of precise docking at multiple angles in narrow spaces. The installation angle is flexible and maintenance is convenient. It solves the technical problems of traditional connectors, such as installation limitations and difficult maintenance due to fixed angles, and significantly improves on-site construction efficiency and system operation reliability.

[0036] like Figure 3 As shown, the outer peripheral wall of the adapter cylinder 300 has a first groove 310, and the inner peripheral wall of the connecting sleeve 200 has a second groove 210. The first groove 310 and the second groove 210 together constitute a circumferential mating groove 400. The circumferential mating groove 400 can be an arc-shaped groove or an annular groove. In this embodiment, the circumferential mating groove 400 is an annular groove, and the first groove 310 and the second groove 210 constituting the annular groove are concentrically aligned, with consistent depth and matching width, ensuring uniform force distribution after the elastic clip 500 is fully embedded; and the cross-sections of the first groove 310 and the second groove 210 are semi-circular, but can also be rectangular, trapezoidal, or other shapes.

[0037] In this embodiment, the cross-section of the circumferential mating groove 400 is circular and has a diameter of 2.2 mm.

[0038] like Figure 3 and Figure 4 As shown, in this embodiment, the connecting sleeve 200 has an insertion hole 220 communicating with the circumferential mating groove 400, and the elastic locking member 500 is inserted into the circumferential mating groove 400 through the insertion hole 220. Preferably, the central axis X1 of the insertion hole 220 is tangent to the central circumferential line X2 of the circumferential mating groove 400 to ensure that the elastic locking member 500 is vertically pressed in, avoiding the elastic locking member 500 from jamming or deforming due to tilting during pressing.

[0039] In some embodiments, the outer peripheral surface of the connecting sleeve 200 is formed with a flat surface 230 to facilitate clamping by a clamping tool. (See reference) Figure 5 In this embodiment, a pair of flat surfaces 230 are provided, and the pair of flat surfaces 230 are symmetrically distributed on both radial sides of the connecting sleeve 200. When it is necessary to install the elastic clip 500, the clamping tool clamps the flat surface 230 to fix the connecting sleeve 200, and then the elastic clip 500 is precisely pressed into the circumferential mating groove 400 along the insertion hole 220 by the press fitting tool.

[0040] In some embodiments, the elastic clip 500 is an elastic steel wire rope. The elastic clip 500 is straight in its free state, and bent and closed when embedded in the circumferential mating groove 400.

[0041] like Figure 2 As shown, the connector also includes multiple sealing rings 700, which abut against the inner peripheral wall of the connecting sleeve 200 and the outer peripheral wall of the adapter cylinder 300, and the multiple sealing rings 700 are spaced apart along the axial direction of the adapter cylinder 300; the outer peripheral wall and / or the inner peripheral wall of the adapter cylinder 300 are recessed to form mounting grooves 320 for receiving the sealing rings 700. By providing multiple sealing rings 700 and arranging them spaced apart along the axial direction, a stable and reliable sealing structure is formed between the connecting sleeve 200 and the adapter cylinder 300 to prevent media leakage.

[0042] like Figure 2 As shown, the connector also includes a locking sleeve 800. One end of the locking sleeve 800 mates with the connector 100, and the other end protrudes radially inward to form a first boss 810. The outer circumferential surface of the connecting sleeve 200 protrudes radially outward to form a second boss 240 that mates with the first boss 810. The first boss 810 and the second boss 240 abut against each other in the axial direction of the connecting sleeve 200 to fix the connecting sleeve 200 to the end of the connector 100. By providing the locking sleeve 800, it is convenient to disassemble and position the connector 100 and the connecting sleeve 200. At the same time, the end face mating of the first boss 810 and the second boss 240 effectively restricts axial movement. In this embodiment, the locking sleeve 800 has a threaded structure, and it is specifically fixedly connected to the connector 100 by a threaded engagement. Of course, other fixed connections such as snap-fits can also be used.

[0043] The end of the connector 100 near the connecting sleeve 200 has a first conical surface 110, and the end of the connecting sleeve 200 near the connector 100 has a second conical surface 250 that fits against the first conical surface 110. After the two conical surfaces are precisely fitted together, they work together with the axial clamping force of the locking sleeve 800 to form a self-centering sealing structure, which significantly improves the connection rigidity and the pressure resistance of the medium.

[0044] In some embodiments, the connector further includes a sleeve 900, which is sleeved on the outer periphery of the adapter cylinder 300, and one end of the sleeve 900 near the connector 100 protrudes radially inward to form a limiting platform 910, and the outer peripheral surface of the adapter cylinder 300 is radially recessed to form a limiting groove 330 that mates with the limiting platform 910.

[0045] A press-fit groove 920 is formed between the sleeve 900 and the adapter sleeve 300. The pipe 600 is a flexible hose, and the end of the pipe 600 is press-fitted into the press-fit groove 920 and tightly fitted to the inner peripheral wall of the sleeve 900 and the outer peripheral wall of the adapter sleeve 300, respectively. In this embodiment, the pipe 600 is specifically a Teflon hose. During installation, after inserting the end of the Teflon hose into the press-fit groove 920, axial compression is used to make the outer wall of the hose tightly fitted to the inner peripheral wall of the sleeve 900 and the outer peripheral wall of the adapter sleeve 300.

[0046] Furthermore, a blocking block 340 is provided on the outer peripheral surface of the adapter cylinder 300, and the blocking block 340 abuts against the end face of the pipe 600.

[0047] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A rotatable connector, characterized in that, include: Connector (100); A connecting sleeve (200) is connected to the end of the connector (100); The adapter tube (300) has a channel (301) that communicates with the connector (100) inside. The adapter tube (300) is at least partially embedded in the connecting sleeve (200). A circumferential mating groove (400) is formed between the outer peripheral wall of the adapter tube (300) and the inner peripheral wall of the connecting sleeve (200). An insertion hole (220) communicating with the circumferential mating groove (400) is provided on the connecting sleeve (200). An elastic clip (500) is inserted into the circumferential mating groove (400) through the insertion hole (220) to achieve axial limiting and relative rotation between the adapter cylinder (300) and the connecting sleeve (200); A pipe (600) is connected to the end of the adapter (300) away from the connector (100), and the pipe (600) is in communication with the channel (301).

2. The rotatable connector according to claim 1, characterized in that, The outer peripheral wall of the adapter sleeve (300) is provided with a first groove (310), and the inner peripheral wall of the connecting sleeve (200) is provided with a second groove (210). The first groove (310) and the second groove (210) together constitute the circumferential mating groove (400). The circumferential mating groove (400) is an arc-shaped groove or an annular groove.

3. The rotatable connector according to claim 1, characterized in that, It also includes a locking sleeve (800), one end of which is engaged with the connector (100), and the other end protrudes radially inward to form a first boss (810). The outer peripheral surface of the connecting sleeve (200) protrudes radially outward to form a second boss (240) that cooperates with the first boss (810). The first boss (810) and the second boss (240) abut against each other in the axial direction of the connecting sleeve (200) to fix the connecting sleeve (200) to the end of the connector (100).

4. The rotatable connector according to claim 1, characterized in that, The central axis (X1) of the insertion hole (220) is tangent to the central circumferential line (X2) of the circumferential mating groove (400).

5. The rotatable connector according to claim 1, characterized in that, The elastic clip (500) is an elastic steel wire rope. The elastic clip (500) is straight in a free state and is bent and closed when it is embedded in the circumferential mating groove (400).

6. The rotatable connector according to claim 1, characterized in that, The outer peripheral surface of the connecting sleeve (200) is formed with a flat surface (230) to facilitate clamping by the clamping tool.

7. The rotatable connector according to claim 1, characterized in that, It also includes a plurality of sealing rings (700), which abut against the inner peripheral wall of the connecting sleeve (200) and the outer peripheral wall of the adapter cylinder (300), and the plurality of sealing rings (700) are arranged at intervals along the axial direction of the adapter cylinder (300). The outer peripheral wall of the adapter tube (300) and / or the inner peripheral wall of the adapter tube (300) are recessed to form an installation groove (320) for receiving the sealing ring (700).

8. The rotatable connector according to claim 3, characterized in that, One end of the locking sleeve (800) is threadedly connected to the connector (100).

9. The rotatable connector according to claim 3, characterized in that, The connector (100) has a first conical surface (110) formed at one end near the connecting sleeve (200), and the connecting sleeve (200) has a second conical surface (250) that fits against the first conical surface (110) at one end near the connector (100).

10. The rotatable connector according to claim 1, characterized in that, It also includes a sleeve (900), which is sleeved on the outer periphery of the adapter cylinder (300), and the end of the sleeve (900) near the connector (100) protrudes radially inward to form a limiting platform (910), and the outer peripheral surface of the adapter cylinder (300) is radially concave to form a limiting groove (330) that mates with the limiting platform (910). A press-fit groove (920) is formed between the sleeve (900) and the adapter (300). The pipe (600) is a flexible hose. The end of the pipe (600) is press-fitted into the press-fit groove (920) and is tightly fitted to the inner peripheral wall of the sleeve (900) and the outer peripheral wall of the adapter (300), respectively. The outer peripheral surface of the adapter tube (300) is provided with a blocking block (340), which abuts against the end face of the pipe (600).

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