Connecting device

Abstract

The utility model provides a connecting device, and relates to the technical field of pipeline connection. The connecting device comprises a base which is provided with a channel and a containing cavity, the channel is communicated with the containing cavity, and fluid in a connecting pipe can flow in the channel; the connecting assembly is fixedly connected with the base, the connecting assembly comprises a connecting piece and a plurality of clamping thorns, the connecting piece is arranged on the connecting pipe in a sleeving mode and extends into the containing cavity, the multiple clamping thorns are arranged on the inner circumferential wall of the connecting piece in the axis direction of the connecting pipe, and the clamping thorns extend in the circumferential direction of the connecting pipe and are used for abutting against the outer wall of the connecting pipe; the sealing piece is arranged in the containing cavity and arranged on the connecting pipe in a sleeving mode, and the sealing piece is located between the channel and the connecting piece; the connecting assembly has a locking state and an unlocking state; in the locking state, the clamping thorns abut against the outer wall of the connecting pipe; and in the unlocking state, the clamping thorns are separated from the outer wall of the connecting pipe. The connecting strength of the connecting pipe can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and more specifically, to a connection device. Background Technology

[0002] In hydraulic or pneumatic systems, the strength of pipe connections is crucial. Because the fluid inside the pipes carries high pressure, poor connection strength can cause the pipes to detach, affecting the reliability of the hydraulic or pneumatic system.

[0003] The connection strength of existing connecting pipes needs to be improved.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this utility model, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides a connecting device that can improve the connection strength of connecting pipes.

[0006] The present invention provides a connecting device comprising:

[0007] The base has a channel and a receiving cavity, the channel being in communication with the receiving cavity, and fluid in the connecting pipe being able to flow in the channel;

[0008] A connecting assembly is fixedly connected to the base. The connecting assembly includes a connector and a plurality of spurs. The connector is sleeved on the connecting tube and extends into the receiving cavity. The plurality of spurs are disposed on the inner peripheral wall of the connector along the axial direction of the connecting tube. The spurs extend circumferentially along the connecting tube and are used to press against the outer wall of the connecting tube.

[0009] A sealing element is disposed in the receiving cavity and sleeved on the connecting pipe, the sealing element being located between the channel and the connecting element;

[0010] The connecting component has a locked state and an unlocked state; in the locked state, the clasp abuts against the outer wall of the connecting tube; in the unlocked state, the clasp disengages from the outer wall of the connecting tube.

[0011] In one embodiment of this utility model, the stab has a tip, the tip is positioned toward the sealing element, and the angle formed between the tip and the axis of the connecting pipe is an acute angle.

[0012] In one embodiment of this utility model, the side wall of the accommodating cavity is provided with an annular boss, the annular boss is coaxially arranged with the connecting pipe, the annular boss is located between the sealing member and the connecting member, the annular boss has a guide surface on the side away from the sealing member, and the distance between the guide surface and the axis of the connecting pipe decreases sequentially from the direction closer to the sealing member to the direction away from the sealing member.

[0013] The connecting assembly further includes a guide ring, which is connected to one end of the connector near the seal, and the connecting tube passes through the annular boss and the guide ring.

[0014] When the guide ring slides along the guide surface toward the seal on the side away from the connector, the connecting assembly switches from the locked state to the unlocked state.

[0015] In one embodiment of this utility model, the side wall of the accommodating cavity is further provided with a limiting protrusion ring, the connecting pipe and the connecting member can pass through the limiting protrusion ring, and the side of the guide protrusion ring away from the sealing member can abut against the side of the limiting protrusion ring close to the sealing member.

[0016] In one embodiment of this utility model, the connecting component further includes an annular protrusion, which is sleeved on the connecting member and fixedly connected to the connecting member;

[0017] The limiting protrusion ring has a limiting inclined surface on the side away from the seal, and the distance between the limiting inclined surface and the axis of the connecting pipe increases sequentially from the direction closer to the seal to the direction away from the seal.

[0018] In the unlocked state, the annular protrusion abuts against the limiting inclined surface.

[0019] In one embodiment of the present invention, the connecting assembly further includes an operating protrusion ring, which is connected to the end of the connecting member away from the sealing member. The diameter of the operating protrusion ring is larger than the diameter of the receiving cavity, and the operating protrusion ring is located outside the receiving cavity.

[0020] In one embodiment of this utility model, the sidewall of the connector is provided with a plurality of through grooves along its own axial direction, and the plurality of through grooves are evenly distributed along the circumference of the connector.

[0021] In one embodiment of this utility model, the connecting device further includes a telescopic rod, one end of which is connected to the side wall of the accommodating cavity, and the other end of which abuts against the side of the guide ring away from the connecting tube. The telescopic rod is used to apply a force toward the connecting tube to the guide ring. The axis of the telescopic rod is parallel to the guide surface, and the telescopic rod is located between the guide ring and the limiting ring.

[0022] In one embodiment of this utility model, the telescopic rod includes a fixed section, a sliding section, and an elastic element. The fixed section is slidably connected to the sliding section. The end of the sliding section away from the fixed section abuts against the guide protrusion ring. The end of the fixed section away from the sliding section is connected to the side wall of the accommodating cavity. The elastic element is used to push the sliding section away from the fixed section.

[0023] In one embodiment of this utility model, the side wall of the accommodating cavity is provided with a placement groove, and the end of the telescopic rod away from the guide protrusion is located in the placement groove, and the placement groove is in communication with the accommodating cavity.

[0024] The connecting device of this utility model has multiple locking points on the inner wall of the connector. When the connecting assembly is in the locked state, the multiple locking points can press against the outer wall of the connecting pipe to improve the connection strength between the connecting pipe and the connector, thereby improving the connection stability of the connecting pipe. When the connecting assembly is in the unlocked state, the multiple locking points disengage from the connecting pipe, thus facilitating the disassembly and maintenance of the connecting pipe.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments conforming to the present invention and, together with the description, serve to explain the principles of the present invention. It is obvious that the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] Figure 1 This is a cross-sectional view of the connecting device in one embodiment of the present invention.

[0028] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0029] Figure 3 This is a front view of the connecting component in one embodiment of the present invention.

[0030] Figure 4 This is a top view of the connecting component in one embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Base; 11. Channel; 12. Sealing ring; 13. Annular boss; 14. Guide surface; 15. Limiting protrusion; 16. Limiting bevel; 2. Connecting assembly; 21. Connector; 22. Buckle; 23. Guide protrusion; 24. Annular protrusion; 25. Operating protrusion; 26. Through groove; 3. Sealing element; 100. Connecting pipe. Detailed Implementation

[0033] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted. Furthermore, the drawings are merely illustrative of the present invention and are not necessarily drawn to scale.

[0034] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0035] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0036] This utility model provides a connecting device. See also Figure 1 , Figure 2 and Figure 3The connecting device includes a base 1, a connecting assembly 2, and a sealing element 3. The base 1 has a channel 11 and a receiving cavity, with the channel 11 communicating with the receiving cavity, allowing fluid within the connecting pipe 100 to flow within the channel 11. The connecting assembly 2 is fixedly connected to the base 1 and includes a connector 21 and multiple spurs 22. The connector 21 is sleeved on the connecting pipe 100 and extends into the receiving cavity. The multiple spurs 22 are located on the inner circumferential wall of the connector 21 along the axial direction of the connecting pipe 100 and extend circumferentially along the connecting pipe 100, serving to press against the outer wall of the connecting pipe 100. The sealing element 3 is located in the receiving cavity and sleeved on the connecting pipe 100, situated between the channel 11 and the connector 21. The connecting assembly 2 has a locked state and an unlocked state; in the locked state, the spurs 22 abut against the outer wall of the connecting pipe 100; in the unlocked state, the spurs 22 disengage from the outer wall of the connecting pipe 100.

[0037] Thus, multiple locking spikes 22 are provided on the inner wall of the connector 21. When the connecting assembly 2 is in the locked state, the multiple locking spikes 22 can press against the outer wall of the connecting pipe 100 to improve the connection strength between the connecting pipe 100 and the connector 21, thereby improving the connection stability of the connecting pipe 100. When the connecting assembly 2 is in the unlocked state, the multiple locking spikes 22 disengage from the connecting pipe 100, thereby facilitating the disassembly and maintenance of the connecting pipe 100.

[0038] In one embodiment of this utility model, the connecting pipe 100 can be replaced with a PU pipe, PA pipe, or other plastic pipe. The fluid in the connecting pipe 100 can be a gas, water, oil, or other fluid medium.

[0039] In one embodiment of this utility model, see Figure 1 The base 1 can be cylindrical. The base 1 can be connected to the equipment via a threaded connection or a snap-fit ​​connection. The equipment can be a valve body, pump body, cylinder, or similar device. A sealing ring 12 can be provided at the end of the base 1 that extends into the equipment to improve sealing and enhance product reliability.

[0040] In one embodiment of this utility model, the channel 11 and the accommodating cavity can extend along the axial direction of the base 1.

[0041] In one embodiment of this utility model, the connector 21 is a flexible metal structure, for example, the connector 21 is a stainless steel structure.

[0042] In one embodiment of this utility model, see Figure 2 and Figure 3 The number of spurs 22 can be two to improve the connection strength of the connecting pipe 100. In other embodiments of this utility model, the number of spurs 22 can be three, four, five, etc.

[0043] In one embodiment of this utility model, see Figure 1 and Figure 2 The stab 22 has a pointed tip, which is positioned towards the seal 3. The angle formed between the pointed tip and the axis of the connecting tube 100 is an acute angle. For example, the angle formed between the pointed tip and the axis of the connecting tube 100 can be 30°, 40°, 45°, 60°, etc., so that the stab 22 is tilted. After the pointed tip penetrates the outer wall of the connecting tube 100, it prevents the connecting tube 100 from separating from the base 1, thereby further improving the connection strength of the connecting tube 100.

[0044] In one embodiment of this utility model, see Figure 1 and Figure 2 The accommodating cavity has an annular boss 13 on its side wall. The annular boss 13 is coaxially arranged with the connecting pipe 100 and is located between the seal 3 and the connecting member 21. The side of the annular boss 13 away from the seal 3 has a guide surface 14. The distance between the guide surface 14 and the axis of the connecting pipe 100 decreases sequentially from the direction closer to the seal 3 to the direction farther away from the seal 3. In other words, the guide surface 14 is inclined, and the cross-section of the annular boss 13 is a right trapezoid, with the inclined surface of the right trapezoid being the guide surface 14. The connecting assembly 2 also includes a guide ring 23, which is integrally connected to the end of the connecting member 21 near the seal 3. The connecting pipe 100 passes through the annular boss 13 and the guide ring 23. When the guide ring 23 slides along the guide surface 14 near the seal 3 on the side away from the connecting member 21, the connecting assembly 2 switches from a locked state to an unlocked state.

[0045] Thus, when it is necessary to disassemble the connecting pipe 100, the connecting member 21 can be pushed to move. The connecting member 21 drives the guide ring 23 to slide along the guide surface 14. Due to the elasticity of the connecting member 21, the guide ring 23 will undergo slight deformation, thereby causing the connecting member 21 to drive the clasp 22 away from the connecting pipe 100, so that the clasp 22 separates from the connecting pipe 100, which is conducive to the disassembly of the connecting pipe 100. When it is necessary to install the connecting pipe 100, first insert the connecting pipe 100 into the connecting member 21, and then pull the connecting member 21, so that the connecting member 21 drives the guide ring 23 to slide along the inclined surface until the clasp 22 presses against the outer wall of the connecting pipe 100, which facilitates the installation of the connecting pipe 100 and improves the installation efficiency.

[0046] In one embodiment of this utility model, see Figure 1 and Figure 2The side wall of the accommodating cavity is also provided with a limiting protrusion ring 15. The connecting pipe 100 and the connecting member 21 can pass through the limiting protrusion ring 15, and the side of the guide protrusion ring 23 away from the seal 3 can abut against the side of the limiting protrusion ring 15 near the seal 3. In this way, during the movement of the connecting member 21, the limiting protrusion ring 15 plays a limiting role in the connecting member 21, which can prevent the connecting member 21 from separating from the base 1, and further improve the connection strength of the connecting pipe 100.

[0047] In one embodiment of this utility model, see Figures 1-3 The connecting component 2 also includes an annular protrusion 24, which is sleeved on and integrally connected to the connector 21. The limiting protrusion 15 has a limiting slope 16 on the side away from the seal 3, and the distance between the limiting slope 16 and the axis of the connecting pipe 100 increases sequentially from near the seal 3 to away from the seal 3. In the unlocked state, the annular protrusion 24 abuts against the limiting slope 16. Thus, during the movement of the connector 21, the limiting slope 16 can block the movement of the annular protrusion 24, preventing excessive movement of the connector 21 and improving the reliability and practicality of the connecting device.

[0048] In one embodiment of this utility model, see Figures 1-4 The connecting assembly 2 also includes an operating protrusion ring 25, which is integrally connected to the end of the connector 21 away from the seal 3. The diameter of the operating protrusion ring 25 is larger than the diameter of the receiving cavity, and the operating protrusion ring 25 is located outside the receiving cavity. This is to prevent the connector 21 from completely entering the receiving cavity and to facilitate the application of a moving force to the connector 21 by hand through the operating protrusion ring 25.

[0049] In one embodiment of this utility model, see Figure 3 and Figure 4 The sidewall of the connector 21 is provided with multiple through grooves 26 along its own axis, and the multiple through grooves 26 are evenly distributed along the circumference of the connector 21. In this way, the through grooves 26 can divide the guide ring 23, the spur 22, the annular rib 24 and part of the sidewall of the connector 21 into multiple arc-shaped segments, which can reduce the weight of the connecting device and save costs on the one hand; on the other hand, it can improve the elasticity and toughness of the connector 21.

[0050] In one embodiment of this utility model, the connecting device further includes a telescopic rod (not shown in the drawings). One end of the telescopic rod is welded to the side wall of the accommodating cavity, and the other end abuts against the side of the guide ring 23 away from the connecting pipe 100. The telescopic rod is used to apply a force to the guide ring 23 toward the connecting pipe 100. The axis of the telescopic rod is parallel to the guide surface 14, and the telescopic rod is located between the guide ring 23 and the limiting ring 15. On the one hand, in the locked state, the telescopic rod can apply a force to the guide ring 23 toward the connecting pipe 100, so that the clasp 22 and the connecting pipe 100 are pressed more firmly, further improving the connection strength of the connecting pipe 100. On the other hand, during the movement of the connecting member 21, the telescopic rod is compressed by the guide ring 23, which helps to avoid the problem of excessive movement of the connecting member 21.

[0051] In one embodiment of this utility model, there can be multiple telescopic rods, which are distributed circumferentially along the accommodating cavity to apply force evenly to the connecting member 21.

[0052] In one embodiment of this utility model, the telescopic rod includes a fixed section, a sliding section, and an elastic element. The fixed section and the sliding section are slidably connected and coaxially arranged. The end of the sliding section away from the fixed section abuts against a guide ring 23, and the end of the fixed section away from the sliding section is welded to the side wall of the accommodating cavity. In one example, the fixed section is sleeved on the sliding section; in another example, the sliding section is sleeved on the fixed section. The elastic element is used to push the sliding section away from the fixed section. The elastic element can be a spring, and there can be multiple springs. The springs can be sleeved on the sliding section or on the sliding section. Thus, by sliding the sliding section and the fixed section, and by the elastic element resetting the sliding section, the telescopic function of the telescopic rod can be realized.

[0053] In one embodiment of this invention, the side wall of the accommodating cavity is provided with a placement groove, and the end of the telescopic rod away from the guide ring 23 is located in the placement groove, which communicates with the accommodating cavity. This reduces the space occupied by the telescopic rod in the accommodating cavity and improves the reliability of the connecting device.

[0054] In one embodiment of this utility model, the outer peripheral wall of the operating protrusion ring 25 may be provided with multiple operating blocks, which are distributed circumferentially along the operating protrusion ring 25 so that a person can pull the connecting piece 21 by hand through the operating blocks.

[0055] The working principle of the connecting device provided in the embodiments of this utility model will be explained below.

[0056] When it is necessary to install the connecting pipe 100, first insert the connecting pipe 100 into the connector 21, and then manually pull the operating protrusion 25 outward. The operation drives the connector 21 to move, so that the connector 21 drives the guide protrusion 23 to slide along the inclined surface until the clasp 22 presses against the outer wall of the connecting pipe 100. The side of the guide protrusion 23 away from the seal 3 abuts against the limiting protrusion 15, and the telescopic rod abuts against the guide protrusion 23, which facilitates the installation of the connecting pipe 100, improves the installation efficiency, and also improves the connection strength of the connecting pipe 100.

[0057] When it is necessary to disassemble the connecting pipe 100, the operator holds the operating protrusion 25 and pushes the connector 21 inward. The connector 21 drives the guide protrusion 23 to slide along the guide surface 14. Since the connector 21 is elastic, the guide protrusion 23 will undergo slight deformation, which will cause the connector 21 to drive the clasp 22 away from the connecting pipe 100 until the annular protrusion 24 abuts against the limiting protrusion 15, so that the clasp 22 separates from the connecting pipe 100, the telescopic rod is compressed, and the operator can pull out the connecting pipe 100 by hand, which is conducive to the disassembly of the connecting pipe 100.

[0058] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

Claims

1. A connection device, characterized in that The application relates to a connecting assembly for a connecting pipe, comprising: a base provided with a channel and a receiving cavity, the channel being communicated with the receiving cavity, and a fluid in the connecting pipe being capable of flowing in the channel; a connecting assembly fixedly connected with the base, the connecting assembly comprising a connecting piece and a plurality of clamping spikes, the connecting piece being sleeved on the connecting pipe and extending into the receiving cavity, the clamping spikes being arranged on the inner circumferential wall of the connecting piece along the axial direction of the connecting pipe, the clamping spikes extending along the circumferential direction of the connecting pipe and being used for pressing against the outer wall of the connecting pipe; a sealing piece arranged in the receiving cavity and sleeved on the connecting pipe, the sealing piece being located between the channel and the connecting piece; the connecting assembly has a locking state and an unlocking state; in the locking state, the clamping spikes abut against the outer wall of the connecting pipe; in the unlocking state, the clamping spikes are separated from the outer wall of the connecting pipe.

2. The connection device according to claim 1, characterized in that the clamping spikes are provided with pointed ends, the pointed ends are arranged towards the sealing piece, and the included angle between the pointed ends and the axis of the connecting pipe is an acute angle.

3. The connection device of claim 1, wherein the side wall of the receiving cavity is provided with an annular boss, the annular boss is coaxially arranged with the connecting pipe, the annular boss is located between the sealing piece and the connecting piece, the annular boss is provided with a guide surface on the side away from the sealing piece, and the distance between the guide surface and the axis of the connecting pipe gradually decreases along the direction from the side close to the sealing piece to the side away from the sealing piece. the connecting assembly further comprises a guide convex ring, the guide convex ring is connected with one end of the connecting piece close to the sealing piece, and the connecting pipe passes through the annular boss and the guide convex ring. when the guide convex ring on the side away from the connecting piece slides along the guide surface towards the sealing piece, the connecting assembly is switched from the locking state to the unlocking state.

4. The connection device according to claim 3, characterized in that the side wall of the receiving cavity is further provided with a limiting convex ring, the connecting pipe and the connecting piece can pass through the limiting convex ring, and the side of the guide convex ring away from the sealing piece can abut against the side of the limiting convex ring close to the sealing piece.

5. The connection device according to claim 4, characterized in that the connecting assembly further comprises an annular convex ridge, the annular convex ridge is sleeved on the connecting piece and fixedly connected with the connecting piece; the side of the limiting convex ring away from the sealing piece is provided with a limiting inclined surface, and the distance between the limiting inclined surface and the axis of the connecting pipe gradually increases along the direction from the side close to the sealing piece to the side away from the sealing piece. in the unlocking state, the annular convex ridge abuts against the limiting inclined surface.

6. The connection device according to claim 5, characterized in that the connecting assembly further comprises an operating convex ring, the operating convex ring is connected with one end of the connecting piece away from the sealing piece, the diameter of the operating convex ring is greater than the diameter of the receiving cavity, and the operating convex ring is located outside the receiving cavity.

7. The connection device according to claim 6, characterized in that the side wall of the connecting piece is provided with a plurality of through grooves along the axial direction of the connecting piece, and the through grooves are uniformly distributed along the circumferential direction of the connecting piece.

8. The connection device of claim 4, wherein The connecting device further comprises a telescopic rod, one end of the telescopic rod is connected with the side wall of the accommodating cavity, the other end of the telescopic rod is in abutment with the side of the guide convex ring away from the connecting pipe, the telescopic rod is used for applying an action force to the guide convex ring to move towards the connecting pipe, the axis of the telescopic rod is parallel to the guide surface, and the telescopic rod is located between the guide convex ring and the limiting convex ring.

9. The connection device according to claim 8, characterized in that The telescopic rod comprises a fixed segment, a sliding segment and an elastic member, the fixed segment is in sliding connection with the sliding segment, one end of the sliding segment away from the fixed segment is in abutment with the guide convex ring, and the other end of the fixed segment away from the sliding segment is connected with the side wall of the accommodating cavity, and the elastic member is used for pushing the sliding segment to move away from the fixed segment.

10. The connection device of claim 8, wherein The side wall of the accommodating cavity is provided with a placing groove, one end of the telescopic rod away from the guide convex ring is located in the placing groove, and the placing groove is in communication with the accommodating cavity.

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