Wave pipe joint

Abstract

A corrugated pipe connector comprises a connector shell and an inner connector which is arranged in the connector shell and connected with a corrugated pipe in a threaded mode, and is characterized in that a circle of limiting protruding ring is formed on the inner wall of the middle of the connector shell, and an annular groove matched with a limiting protruding block is formed in the outer wall of the front portion of the inner connector in a concave mode. The inner connector is clamped in the connector shell through matching of the annular groove and the limiting convex ring to form clearance fit, and the front end of the inner connector is a guide face facilitating clamping. The utility model has the advantages of simple structure, convenience in assembly and processing, good sealing effect, firm and stable connection and convenience in replacement of the joint.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pumps and relates to a wave pipe joint used for connecting an air hose and an air pump. Background Art

[0002] An air pump is also called an air pump, an air pump, or an inflator. It works by running a motor and is an inflatable tool. The application field of air pumps is very wide, involving cars, motorcycles, bicycles, leather balls, rubber boats, etc. When the air pump is inflated, a hose is needed to connect the air pump and the inflatable product.

[0003] Upon investigation, the existing Chinese patent No. 201720583535.5, "A Wave Pipe Connector", includes a left shell of a wave pipe connector, a right shell of a wave pipe connector, a fixing cover of left and right shells of a wave pipe connector and an inner joint of a wave pipe. The tail end of the inner joint of the wave pipe is connected to the wave pipe by a threaded connection, and a wave pipe lock is provided on the periphery of the threaded connection. The left shell of the wave pipe connector and the right shell of the wave pipe connector are fixedly connected. A first boss is provided on the outer side of the head of the left shell of the wave pipe connector and the outer side of the head of the right shell of the wave pipe connector respectively. A first groove is provided on both sides of the inner part of the left and right shell fixing covers of the wave pipe connector corresponding to the first boss. The first boss is configured to be inserted into the first groove and then fixed by the left and right shell fixing covers of the wave pipe connector; a second boss is provided on the inner side of the middle part of the left shell of the wave pipe connector and the inner side of the middle part of the right shell of the wave pipe connector respectively, and the second boss is configured to be inserted into the second groove of the inner joint of the wave pipe to form a clearance fit. The wave pipe connector solves the problem that the traditional connector rotates and the hose also rotates. However, the left shell and the right shell of the wave pipe connector need to be fixed by screws, which has the problems of many parts and troublesome assembly, and the operation is not convenient and fast enough.

[0004] In addition, the Chinese patent No. 202223329228.4, "A Multifunctional Double-Joint Inflatable Hose for an Air Pump", has an inner sleeve connected to both ends of the hose, and joints are provided on the outside of the two inner sleeves, and the joints are clamped on the outer wall of the inner sleeves, and each of the joints is provided with a threaded interface at the front end, and a multifunctional joint is provided at the threaded interface, and each of the multifunctional joints has a screw that is screwed and connected to the multifunctional joint. The joint does not need to be connected by screws, but is directly set on the outside of the inner sleeve. The sealing ring is clamped on the interface of the inner sleeve by installing a soft ring and a limit soft ring. The operation is relatively convenient, but the structure is still relatively complicated, the processing is troublesome, and the cost is also high. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a wave pipe joint with a simple and reasonable structure and convenient assembly in view of the above technical status quo.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a wave pipe joint, including a joint shell and an inner joint, the inner joint is arranged in the joint shell and is threadedly connected to the wave pipe, and is characterized in that: a limiting convex ring is formed on the middle inner wall of the joint shell, and an annular groove cooperating with the limiting convex block is concavely provided on the front outer wall of the inner joint. The inner joint is clamped in the joint shell through the cooperation of the annular groove and the limiting convex ring to form a clearance fit, and the front end of the inner joint is a guiding surface for easy insertion.

[0007] As an improvement, the inner hole of the joint shell is divided into three sections: front, middle and rear. The front section is an internal thread interface threadedly connected to the multi-functional joint, the middle section is a connecting section that is snap-fitted and positioned with the internal joint, the inner diameter of the front section is less than the inner diameter of the middle section and less than the inner diameter of the rear section, a positioning convex ring is arranged on the connecting section, and after the internal joint is inserted into the joint shell and snap-fitted and positioned, the front end of the internal joint abuts against the step surface of the lower end of the internal thread interface.

[0008] Furthermore, the rear section of the inner joint is an external threaded section that is threadedly connected to the wave tube. After the wave tube is threadedly connected to the inner joint, it is clamped and fixed by a wave tube lock. After the inner joint is inserted into the joint shell and clamped and positioned, the wave tube lock is set at the rear section of the joint shell, and the lower end of the wave tube lock is flush with the lower end surface of the joint shell.

[0009] Furthermore, the front section of the inner joint is provided with a circular convex ring and a cut-edge circular convex ring, and an annular groove is formed between the circular convex ring and the cut-edge circular convex ring for the limiting convex ring of the joint shell to be inserted into, wherein the outer peripheral surface of the circular convex ring is a conical surface, and support blocks are symmetrically provided on the upper end surface of the cut-edge circular convex ring.

[0010] Furthermore, a sealing ring is provided between the front end of the inner joint and the step surface at the lower end of the internal thread interface of the joint housing, and the front end of the inner joint is concavely provided with an annular groove for embedding the sealing ring.

[0011] Furthermore, the multifunctional joints are multiple in different shapes, and a connecting ear is protruding from the side of the multifunctional joint. A connecting ring is sleeved on the wave tube, and the connecting ring is integrally connected to a connecting belt. The connecting belt passes through the connecting ear to connect multiple multifunctional joints in series and then hangs them on the wave tube.

[0012] Finally, the guide surface is a conical surface.

[0013] Compared with the prior art, the advantages of the utility model are: a limited convex ring is formed on the inner wall of the joint shell, an annular groove is concavely provided on the outer wall of the inner joint, the inner joint is clamped in the joint shell through the cooperation of the annular groove and the limited convex ring to form a clearance fit, and the front end of the inner joint is a conical surface for easy insertion, so that the assembly is quick and convenient; the multifunctional joint is hung on the corrugated tube after being connected in series through the connecting belt, which is convenient for replacement and not easy to lose. The utility model has a simple structure, convenient assembly and processing, good sealing effect, and a firm and stable connection, which can facilitate the replacement of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 for Figure 1 A cross-sectional view of

[0016] Figure 3 for Figure 1 Exploded diagram of

[0017] Figure 4 This is a schematic diagram of the structure of the embodiment of the utility model after carrying the multifunctional connector;

[0018] Figure 5 for Figure 4 A cross-sectional view of

[0019] Figure 6 for Figure 2 A partial enlarged view of

[0020] Figure 7 for Figure 3 A partial enlarged view of . DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 7 As shown, a wave pipe joint comprises a joint shell 1, an inner joint 2 and a wave pipe lock 3. The inner joint 2 is arranged in the joint shell 1 and is threadedly connected with the wave pipe 5. A circle of limiting convex ring 12 is formed on the middle inner wall of the joint shell 1. An annular groove 21 cooperating with the limiting convex block 12 is concavely provided on the front outer wall of the inner joint 2. The inner joint 2 is clamped in the joint shell 1 through the cooperation of the annular groove 21 and the limiting convex ring 12 to form a clearance fit. The front end of the inner joint 2 is a guide surface for easy insertion.

[0023] The specific structure is as follows: the inner hole of the joint shell 1 is divided into three sections: front, middle and rear. The front section is an internal thread interface 11 threadedly connected to the multifunctional joint 6, the middle section is a connection section that is clamped and positioned with the internal joint 2, the inner diameter of the front section is less than the inner diameter of the middle section and less than the inner diameter of the rear section, and the limiting protrusion 12 is set on the connection section. After the internal joint 2 is inserted into the joint shell 1 and clamped and positioned, the front end of the internal joint 2 abuts against the step surface at the lower end of the internal thread interface 11. The rear section of the internal joint 2 is an external thread section threadedly connected to the corrugated tube 5. After the corrugated tube 5 is threadedly connected to the internal joint 2, it is clamped and fixed by the corrugated tube lock 3. After the internal joint 2 is inserted into the joint shell 1 and clamped and positioned, the corrugated tube lock 3 is set at the rear section of the joint shell 1, and the lower end of the corrugated tube lock 3 is flush with the lower end surface of the joint shell 1. The front section of the inner joint 2 is provided with a circular convex ring 22 and a trimmed circular convex ring 23, and an annular groove 21 is formed between the circular convex ring 22 and the trimmed circular convex ring 23 for the limiting convex ring 12 of the joint housing 1 to be inserted into, wherein the outer peripheral surface of the circular convex ring 22 is a conical surface as a guide surface, and support blocks 24 are symmetrically provided on the upper end surface of the trimmed circular convex ring 23.

[0024] A sealing ring 4 is provided between the front end of the internal joint 2 and the step surface at the lower end of the internal thread interface 11 of the joint housing 1 , and an annular groove for embedding the sealing ring 4 is concavely provided at the front end of the internal joint 2 .

[0025] The multifunctional joints 6 are multiple in shape. The rear end of the multifunctional joint 6 is a screw threadedly connected to the internal thread interface 11 of the joint housing 1. The front end of the multifunctional joint 6 is the output end. A connecting ear 61 is convexly provided on the side of the middle part of the multifunctional joint 6. A connecting ring 7 is sleeved on the wave tube 5. The connecting ring 7 is integrally connected to a connecting belt 70. The connecting belt 70 passes through the connecting ear 61 to connect multiple multifunctional joints 6 in series and then hangs them on the wave tube 5.

[0026] During assembly, it is only necessary to connect the corrugated tube 5 to the rear end of the inner joint 2 and fix it with the corrugated tube lock 3, and then insert the inner joint 2 into the joint housing 1 for clamping and positioning. According to different output objects, the corresponding multifunctional joint 6 is selected, and the multifunctional joint thread is screwed into the internal thread interface 11 of the joint housing 1 for use, which is convenient and quick to operate.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wave pipe joint, comprising a joint shell and an inner joint, wherein the inner joint is arranged in the joint shell and is threadedly connected to the wave pipe, and is characterized in that: A limiting convex ring is formed on the middle inner wall of the joint shell, and an annular groove cooperating with the limiting convex block is recessed on the front outer wall of the inner joint. The inner joint is clamped in the joint shell through the cooperation of the annular groove and the limiting convex ring to form a clearance fit, and the front end of the inner joint is a guiding surface for easy insertion.

2. The wave pipe joint according to claim 1, characterized in that: The inner hole of the joint shell is divided into three sections: front, middle and rear. The front section is an internal thread interface threadedly connected to the multi-functional joint, the middle section is a connecting section that is clamped and positioned with the internal joint, the inner diameter of the front section is less than the inner diameter of the middle section and less than the inner diameter of the rear section, a positioning convex ring is arranged on the connecting section, and after the internal joint is inserted into the joint shell and clamped and positioned, the front end of the internal joint abuts against the step surface of the lower end of the internal thread interface.

3. The wave pipe joint according to claim 2, characterized in that: The rear section of the inner joint is an external thread section that is threadedly connected to the wave pipe. After the wave pipe is threadedly connected to the inner joint, it is clamped and fixed by a wave pipe lock. After the inner joint is inserted into the joint shell and clamped and positioned, the wave pipe lock is set at the rear section of the joint shell, and the lower end of the wave pipe lock is flush with the lower end surface of the joint shell.

4. The wave pipe joint according to claim 3, characterized in that: The front section of the inner joint is provided with a circular convex ring and a cut-edge circular convex ring, and an annular groove is formed between the circular convex ring and the cut-edge circular convex ring for the limiting convex ring of the joint shell to be inserted into, wherein the outer peripheral surface of the circular convex ring is a conical surface, and support blocks are symmetrically arranged on the upper end surface of the cut-edge circular convex ring.

5. The wave pipe joint according to claim 4, characterized in that: A sealing ring is arranged between the front end of the inner joint and the step surface at the lower end of the internal thread interface of the joint shell, and an annular groove for embedding the sealing ring is concavely arranged at the front end of the inner joint.

6. The wave pipe joint according to any one of claims 2 to 5, characterized in that: The multifunctional joints are multiple in shape, and a connecting ear is protruding from the side of the multifunctional joint. A connecting ring is sleeved on the wave pipe, and a connecting belt is integrally connected to the connecting ring. The connecting belt passes through the connecting ear to connect multiple multifunctional joints in series and then hangs them on the wave pipe.

7. The wave pipe joint according to any one of claims 1 to 5, characterized in that: The guide surface is a conical surface.

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