Sealing pipe joint

By designing sealed pipe joints, using elbow heads, seals and limit structures, the problems of poor sealing and falling off of existing elbow connection methods are solved, achieving a more secure and sealing connection effect.

CN222880669UActive Publication Date: 2025-05-16HEBEI BOKENATE AUTO PARTS CO LTD
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Patent Information

Application Number
CN202422033888.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-21
Publication Date
2025-05-16
Estimated Expiration
2034-08-21

AI Technical Summary

Technical Problem

The existing bent pipe connection method only relies on friction, which leads to easy fall off at the connection and poor sealing, resulting in leakage.

Method used

A sealing pipe joint is designed, which uses a elbow head to combine with an internal seal, and a clamping member is provided on the outside for limiting position. The first connection head is connected to the hose and the second connection head is connected to the hard tube. The sealing ring and limiting structure are used to ensure the sealing and firmness of the connection.

Benefits of technology

It improves the firmness and sealing performance of the connection between the elbow head and the hard tube, reduces the occurrence of shedding and leakage, and achieves fast and convenient connection operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sealing pipe joint, which belongs to the technical field of pipe joints and comprises a bent pipe head and a sealing piece in the bent pipe head, and a clamping piece for limiting a hard pipe is arranged outside the bent pipe head. A first connector connected with a hose is arranged at one end of the bent pipe head, a second connector connected with a hard pipe is arranged at the other end of the bent pipe head, and a sealing piece is installed in a sealing groove in the middle of the inner wall of the second connector to seal the hard pipe and the second connector; a first limiting structure for positioning the hard pipe and a third limiting structure for limiting the clamping piece are arranged on the side wall of the second connector at intervals. The sealing ring is used for ensuring that the bent pipe head is in sealing fit with the hard pipe, meanwhile, the first limiting structure is used for conducting circumferential positioning on the hard pipe, the clamping piece is used for conducting axial limiting on the hard pipe, and the firmness of connection between the bent pipe head and the hard pipe can be improved. The quick connector is reasonable and compact in structural design, the two ends of the quick connector can be quickly connected with a hose and a hard pipe respectively, operation is convenient and quick, and meanwhile connection firmness and sealing performance can be guaranteed.
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Description

Technical Field

[0001] The utility model belongs to the technical field of pipe joints, and particularly relates to a sealing pipe joint. Background Art

[0002] As we all know, elbows are pipe fittings that change the flow direction of the medium. Existing elbows need to be connected to hoses and hard pipes through external connectors. This connection method only relies on the friction between the elbow and the hose, and between the elbow and the hard pipe. It is easy for the connection to fall off and the sealing to be poor, causing leakage. Therefore, it is necessary to develop an elbow head with a self-sealing and connection structure to reduce the subsequent falling off and leakage. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a sealing pipe joint.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A sealed pipe joint comprises an elbow and a seal inside the elbow, wherein the elbow is provided with a clamping piece for limiting the position of a hard pipe on the outside; one end of the elbow is provided with a first connector that can be connected to a hose, and the other end is provided with a second connector that can be connected to a hard pipe, and the angle between the central axes of the first connector and the second connector is α; a sealing groove for accommodating the seal is provided in the middle of the inner wall of the second connector, and the seal is used to seal the hard pipe and the second connector; a first limiting structure for positioning the hard pipe and a third limiting structure for limiting the clamping piece are provided on the side wall of the second connector.

[0006] Furthermore, a limiting member for limiting the sealing member is provided below the sealing member, and an annular groove for accommodating the limiting member and a second limiting structure for positioning the limiting member are provided on the inner wall of the second connecting head.

[0007] Furthermore, the first limiting structure includes a first limiting groove and a second limiting groove, the first limiting groove and the second limiting groove are symmetrically arranged at both ends of the diameter of the second connector, and the first limiting groove and the second limiting groove are both parallel to the central axis of the second connector; the end of the hard tube is provided with a protrusion matching the first limiting groove and the second limiting groove.

[0008] Furthermore, the second limiting structure includes a plurality of hollowed-out clamping grooves for correspondingly accommodating a plurality of tongues on the limiting member; the plurality of clamping grooves are arranged at intervals along the circumferential direction of the side wall of the second connector.

[0009] Furthermore, the third limiting structure includes a hollowed-out arc groove arranged on the side wall of the second connector, and the arc grooves are two and symmetrically arranged on the side wall of the second connector, and a clamping groove corresponding to the arc groove is arranged on the outer wall of the hard tube; the end side of the arc groove is provided with a positioning groove for accommodating the bending of the end of the clamping piece, and the positioning groove is arranged on the outer wall of the second connector.

[0010] Furthermore, the two arc-shaped grooves and the first limiting groove and the second limiting groove are alternately arranged on the side wall of the second connector.

[0011] Furthermore, horizontal convex eaves are symmetrically arranged at the upper and lower parts of the middle part of the arc-shaped groove, and the two convex eaves are correspondingly fixed on the outer walls of the second connector on both sides of the arc-shaped groove.

[0012] Furthermore, the sealing member is a sealing ring, the limiting member is a clamping ring; the clamping member is a clamping spring, and a transition section protruding outward is provided in the middle of the clamping spring.

[0013] Furthermore, the first connecting head is a pagoda joint, and a ring boss is provided at the root of the pagoda joint.

[0014] Furthermore, the elbow is integrally injection-molded using a plastic material.

[0015] Furthermore, the inner diameter of the elbow is 12-60 mm.

[0016] Compared with the prior art, the technical progress achieved by the utility model is:

[0017] The utility model is connected to a hose through a first connector at one end of the elbow, and is connected to a hard pipe through a second connector at the other end of the elbow. A sealing ring is used to ensure the sealing performance of the elbow after being connected to the hard pipe. At the same time, the first limiting structure on the side wall of the second connecting head is used to position the hard pipe circumferentially, and the hard pipe is axially limited by a clamping piece, which can improve the firmness of the connection between the elbow and the hard pipe. The utility model has a reasonable and compact structural design, and both ends can be quickly connected to the hose and the hard pipe respectively, which is convenient and quick to operate, and can ensure the firmness and sealing of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 A schematic structural diagram of a sealing pipe joint provided in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A half-section view of a sealed pipe joint;

[0022] Figure 3 This is a schematic diagram of the structure of the elbow head in the embodiment of the utility model;

[0023] Figure 4 for Figure 3 Half-section view of the middle elbow;

[0024] Figure 5 for Figure 2 Schematic diagram of the structure of the middle clamp ring;

[0025] Figure 6 for Figure 2 Schematic diagram of the structure of medium hard pipe;

[0026] Figure 7 for Figure 6 Front view of medium hard pipe;

[0027] Figure 8 This is an appearance diagram of the clamping member in the embodiment of the utility model;

[0028] Fig. 9 for Figure 8 A top view of the middle card connector;

[0029] In the figure:

[0030] 00-hard tube, 01-protrusion, 02-clip groove; 1-seal; 2-clip; 3-clip, 30-transition section, 31-90° bend; 4-protruding tongue; 5-limiting platform;

[0031] 101- elbow; 102- first connector; 103- second connector; 104- sealing groove; 105- annular groove; 106- first limiting groove; 107- second limiting groove; 108- card point groove; 109- arc groove; 110- positioning groove; 111- convex eave; 112- annular boss. DETAILED DESCRIPTION

[0032] The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The following will describe the embodiments of the present utility model in conjunction with the accompanying drawings.

[0033] like Figure 1 , Figure 2As shown, a sealed pipe joint, the elbow 101 and the seal 1 inside it, the elbow 101 is provided with a clamping member 3 for limiting the position of the hard pipe 00 on the outside; one end of the elbow 101 is provided with a first connector 102 that can be connected to a hose (not shown in the figure), and the other end is provided with a second connector 103 that can be connected to the hard pipe 00, the central axis angle between the first connector 102 and the second connector 103 is α, and α in this embodiment is 90°; the middle part of the inner wall of the second connector 103 is provided with a sealing groove 104 for accommodating the seal 1, and the seal 1 is used to seal the hard pipe 00 and the second connector 103; the side wall of the second connector 103 is provided with a first limiting structure for positioning the hard pipe 00 and a third limiting structure for limiting the clamping member 3 at intervals. The elbow of this structure can connect the soft pipe and the hard pipe at the same time, and the sealing and firmness of the connection with the hard pipe can be ensured by means of the seal and the clamping member.

[0034] Further optimize the above scheme, such as Figure 2 , Figure 3-Figure 5 As shown, a stopper 2 for limiting the position of the seal 1 is provided below the seal 1, and an annular groove 105 for accommodating the stopper 2 and a second stopper structure for positioning the stopper 2 are provided on the inner wall of the second connector 103. The second stopper structure includes a plurality of hollowed-out clamping grooves 108 for correspondingly accommodating a plurality of tongues 4 on the stopper 2; the plurality of clamping grooves 108 are arranged at intervals along the circumferential direction of the side wall of the second connector 103. After assembly, the stopper can be fixed on the inner wall of the second connector 103, and the seal is limited by the stopper to prevent the seal ring from detaching and causing leakage during use.

[0035] As a preferred structure, Figure 4 , 6 As shown, the first limiting structure includes a first limiting groove 106 and a second limiting groove 107, the first limiting groove 106 and the second limiting groove 107 are symmetrically arranged at both ends of the diameter of the second connector 103, the first limiting groove 106 and the second limiting groove 107 are parallel to the central axis of the second connector 103, and their corresponding outer walls protrude from the outer wall of the second connector; the end of the hard tube 00 is provided with a protrusion 01 matching the first limiting groove 106 and the second limiting groove 107. The circumferential direction of the hard tube 00 can be limited by the cooperation of the first limiting groove 106 and the second limiting groove 107 on the second connector and the protrusion 01 on the hard tube 00.

[0036] In a specific embodiment of the present invention, Figure 3 , 6As shown in Figure 7, the third limiting structure includes a hollow arc groove 109 set on the side wall of the second connector 103. There are two arc grooves 109, which are symmetrically set on the side wall of the second connector 103. The outer wall of the hard tube 00 is provided with a clamping groove 02 corresponding to the arc groove 109; the end side of the arc groove 109 is provided with a positioning groove 110 for accommodating the bending of the end of the clamping member 3, and the positioning groove 110 is set on the outer wall of the second connector 103. After the hard tube 00 is inserted into the second connector 103, the middle part of the clamping member will be clamped in the clamping spring groove 05 through the arc groove 109, and the clamping member is used to limit the axial direction of the hard tube 00, so as to realize the connection between the elbow and the hard tube.

[0037] When designing specifically, Figure 3 As shown, the two arc grooves 109 and the first limiting groove 106 and the second limiting groove 107 are staggeredly arranged on the side wall of the second connector 103. This structure can ensure that the elbow and the hard pipe are evenly stressed.

[0038] Further optimize the above technical solution, such as Figure 1 , 3 As shown, horizontal convex eaves 111 are symmetrically arranged at the upper and lower parts of the middle of the arc groove 109, and the two convex eaves 111 are correspondingly fixed on the outer walls of the second connector 103 on both sides of the arc groove 109. At the same time, both upper and lower sides of the end of the arc groove 109 are provided with limit platforms 5 for limiting the clamping spring. When installing the clamping spring, hold the second connector of the elbow head by hand, and use the limit platform to apply torque conveniently, while the upper and lower horizontal convex eaves guide the clamping spring.

[0039] like Figure 8 , 9 As shown, the clamping member 3 is a clamping spring, the middle part of which is provided with a transition section 30 protruding outward, and both ends of the clamping spring are provided with 90° bends 31 upward or downward. The clamping spring bypasses the outer wall of the second connector corresponding to the first limiting groove 106 or the second limiting groove 107 with the help of the protruding transition section, and the part between the end of the clamping spring and the transition section can be embedded in the arc groove of the elbow and the clamping groove 02 of the hard pipe 00, and the 90° bend 31 at the end of the clamping spring is randomly inserted into the upper or lower positioning groove 110. The clamping spring is used to limit the axial direction of the elbow and the hard pipe.

[0040] In the specific design, the sealing member 1 is a sealing ring with elasticity, and the limiting member 2 is a clamping ring. Figure 5 At the same time, the first connector 102 is a pagoda connector, and the root of the pagoda connector is provided with an annular boss 112, and the lower part of the annular boss 112 is an integral structure with the elbow body, as shown in FIG. Figure 3 The use of pagoda joints can increase the contact area with the hose and ensure that the elbow and the hose are firmly connected.

[0041] During the specific production, the elbow 101 is made of plastic material and is integrally injection molded. The production process can improve the production efficiency and output of the elbow, and is particularly suitable for batch production. At the same time, the inner diameter of the elbow is 12-60 mm, and can be specifically designed according to actual needs.

[0042] In summary, the utility model has the advantages of compact structure and convenient assembly. One end of the elbow is connected to the hose by a pagoda joint, and the other end is used to limit the circumference of the hard tube through the cooperation of the first limiting groove and the second limiting groove with the protrusion on the hard tube, and the cooperation of the clamping spring and the clamping groove is used to limit the axial position of the hard tube; at the same time, the sealing ring is used to seal the matching surface of the elbow and the hard tube, and the clamping ring fixed in the second connector is used to limit the axial position of the sealing ring to ensure the firmness of the connection between the hard tube and the elbow. The utility model can achieve quick connection, convenient and quick operation, and at the same time, the connection is firm and the sealing performance is good, which can ensure the smooth transportation of the medium.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of protection of the claims of the utility model.

Claims

1. A sealed pipe joint, characterized in that: It includes an elbow head and a seal inside it, wherein the elbow head is provided with a clamping piece for limiting the position of the hard pipe on the outside; one end of the elbow head is provided with a first connector that can be connected to a hose, and the other end is provided with a second connector that can be connected to the hard pipe, and the angle between the central axes of the first connector and the second connector is α; a sealing groove for accommodating the seal is provided in the middle of the inner wall of the second connector, and the seal is used to seal the hard pipe and the second connector; a first limiting structure for positioning the hard pipe and a third limiting structure for limiting the clamping piece are provided on the side wall of the second connector.

2. A sealing pipe joint according to claim 1, characterized in that: A limiting member for limiting the position of the sealing member is provided below the sealing member, and an annular groove for accommodating the limiting member and a second limiting structure for positioning the limiting member are provided on the inner wall of the second connecting head.

3. A sealing pipe joint according to claim 2, characterized in that: The first limiting structure includes a first limiting groove and a second limiting groove, the first limiting groove and the second limiting groove are symmetrically arranged at both ends of the diameter of the second connector, and the first limiting groove and the second limiting groove are both parallel to the central axis of the second connector; the end of the hard tube is provided with a protrusion matching the first limiting groove and the second limiting groove.

4. A sealing pipe joint according to claim 2, characterized in that: The second limiting structure includes a plurality of hollowed-out clamping grooves for correspondingly accommodating a plurality of tongues on the limiting member; the plurality of clamping grooves are arranged at intervals along the circumferential direction of the side wall of the second connector.

5. A sealing pipe joint according to claim 3, characterized in that: The third limiting structure includes a hollowed-out arc groove arranged on the side wall of the second connector, and there are two arc grooves symmetrically arranged on the side wall of the second connector. A clamping groove corresponding to the arc groove is arranged on the outer wall of the hard tube; a positioning groove for accommodating the bending of the end of the clamping piece is arranged on the end side of the arc groove, and the positioning groove is arranged on the outer wall of the second connector.

6. A sealing pipe joint according to claim 5, characterized in that: The two arc grooves and the first limiting groove and the second limiting groove are alternately arranged on the side wall of the second connector.

7. A sealing pipe joint according to claim 2, characterized in that: The sealing member is a sealing ring, the limiting member is a clamping ring; the clamping member is a clamping spring, and a transition section protruding outward is provided in the middle of the clamping spring.

8. The sealing pipe joint according to claim 1, characterized in that: The first connector is a pagoda connector, and a ring boss is provided at the root of the pagoda connector.

9. A sealed pipe joint according to any one of claims 1 to 8, characterized in that: The elbow is made of plastic material and is integrally injection-molded.

10. A sealing pipe joint according to claim 9, characterized in that: The inner diameter of the elbow is 12-60 mm.