Inflation connector

Abstract

The invention relates to the technical field of inflation equipment and discloses an inflation connector which comprises a connector body, a hollow cavity and a limiting through hole are formed in the connector body, one end of the limiting through hole communicates with the hollow cavity, and an opening in the other end of the limiting through hole is formed in the surface of the connector body; the air source mouthpiece is fixedly connected with the joint main body; the ejector rod is in sliding fit with the limiting through hole, a limiting block is arranged at the end, located in the hollow cavity, of the ejector rod, and the diameter of the limiting block is larger than that of the limiting through hole; a vent groove is formed in the side wall of the ejector rod; the cam is arranged in the hollow cavity and used for driving the ejector rod to slide relative to the limiting through hole; the screwing handle is fixedly connected with the cam through a connecting rod and used for driving the cam to rotate, and the connecting rod is in sealed connection with the connector body; the movable connector is rotationally connected with the end, where the opening of the limiting through hole is located, of the connector body. The overall size and length of the inflation connector are effectively reduced, and the inflation connector can better adapt to narrow space environments of aircraft tires and hydraulic prop mouthpieces.

Description

Technical Field

[0001] The invention relates to the technical field of inflation equipment, in particular to an inflation joint. Background Art

[0002] In the aviation field, for aircraft tires and hydraulic struts, regular nitrogen replenishment is one of the key operations to ensure their normal operation and safety. Usually, the inflation process needs to be achieved by connecting the equipment inflation connector to the nozzle on the aircraft.

[0003] However, in some aircraft, there are significant space constraints at the tire joints or hydraulic strut joints. The space in this area is narrow, and there are many pipes and mechanical parts. This complex space environment makes it difficult to install conventional inflation joints. Currently, the existing inflation joints on the market generally use an internal spiral adjustment structure, which leads to a relatively complex arrangement of its parts, which in turn makes the entire inflation joint larger.

[0004] The length of conventional inflation connectors on the market is roughly between 68-120mm. Such a size cannot be smoothly installed in the narrow inflation space of this type of aircraft, so that inflation cannot be performed, which seriously affects the normal maintenance and care of the aircraft's tires and hydraulic struts, and further poses a potential threat to the flight safety of the aircraft. Therefore, a new type of inflation connector that can adapt to narrow spaces is urgently needed to solve this practical problem. Summary of the invention

[0005] The purpose of the present invention is to provide an inflatable joint to solve the problems existing in the above-mentioned prior art, reduce the length of the inflatable joint, and facilitate installation in a narrow space.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an inflatable joint, comprising:

[0008] A joint body, wherein a hollow cavity and a limiting through hole are arranged in the joint body, one end of the limiting through hole is communicated with the hollow cavity, and the other end is opened on the surface of the joint body;

[0009] An air source nozzle, the air source nozzle is fixedly connected to the joint body, and a vent hole communicating with the hollow cavity is provided in the air source nozzle;

[0010] A push rod, the push rod is slidably matched with the limiting through hole, and a limiting block is arranged at one end of the push rod located in the hollow cavity, the diameter of the limiting block is larger than the diameter of the limiting through hole; a ventilation groove is arranged on the side wall of the push rod, the length of the ventilation groove is larger than the length of the limiting through hole, and the ventilation groove is used to connect the hollow cavity with the nozzle of the device to be inflated;

[0011] A cam disposed in the hollow cavity, the cam being used to drive the push rod to slide relative to the limiting through hole;

[0012] A screwing handle which is fixedly connected to the cam via a connecting rod and is used to drive the cam to rotate, wherein the connecting rod is sealedly connected to the joint body;

[0013] The movable joint, the end of the joint body where the opening of the limiting through hole is located is the docking end, the movable joint is rotatably connected to the docking end, and the movable joint is used to connect to the nozzle of the inflatable device.

[0014] Preferably, an annular groove is formed between the movable joint and the joint body, and a plurality of balls are arranged in the annular groove along the circumferential direction.

[0015] Preferably, a threaded hole communicating with the annular groove is provided on the movable joint, a plug is threadedly connected to the threaded hole, and a diameter of the threaded hole is larger than a diameter of the ball.

[0016] Preferably, the material of the balls is steel.

[0017] Preferably, the axial direction of the connecting rod, the axial direction of the air source nozzle and the axial direction of the limiting through hole are perpendicular to each other.

[0018] Preferably, the butt joint end is provided with a second sealing gasket, and the second sealing gasket is used to seal the butt joint between the nozzle of the device to be inflated and the butt joint end.

[0019] Preferably, the cam, the push rod and the limit block are all made of metal.

[0020] Preferably, the push rod is cylindrical, and the length direction of the ventilation groove is parallel to the axial direction of the push rod.

[0021] Preferably, there is a gap between the inner wall of the hollow cavity and the limiting block.

[0022] Preferably, a first sealing gasket is provided between the connecting rod and the joint body.

[0023] Compared with the prior art, the present invention has achieved the following technical effects:

[0024] The inflation joint of the present invention abandons the traditional complex internal spiral adjustment structure and drives the movement of the push rod by rotating the cam by twisting the handle, thereby making the structure of the entire inflation joint more compact, thereby effectively reducing the overall volume and length of the inflation joint, and being able to better adapt to the narrow space environment of the aircraft tire and hydraulic strut joint. It solves the problem that conventional inflation joints cannot be installed due to their large size, ensures the normal inflation and maintenance work of the aircraft tire and hydraulic strut, and improves the safety and reliability of the aircraft.

[0025] Furthermore, a hollow cavity and a limit hole are provided in the joint body, the push rod and the limit hole are slidably matched, the cam can drive the push rod to slide, and the screw handle is fixedly connected to the cam through the connecting rod to rotate the cam, thereby realizing precise control of the push rod position. This structural design makes the operation of the inflation joint more flexible and simple, and the movement of the push rod can be easily controlled by screwing the handle, thereby pushing open the valve in the nozzle of the inflatable device. Compared with the traditional inflation joint with an internal spiral adjustment structure, it greatly simplifies the operation process, improves the inflation efficiency, and reduces the failure rate caused by the complex structure.

[0026] Furthermore, the movable joint is rotatably connected to the butt end of the joint body, and an annular groove is formed between the movable joint and the joint body, and a plurality of balls are arranged in the annular groove along the circumferential direction. This design enables the movable joint to rotate more flexibly when connected to the nozzle of the inflatable device, and facilitates the adjustment of the angle to adapt to nozzles at different positions and angles, further improving the installation convenience and adaptability of the inflation joint in a narrow space, ensuring the tight and accurate connection between the inflation joint and the nozzle of the inflatable device, reducing the risk of gas leakage, and improving the stability and safety of inflation.

[0027] Furthermore, a threaded hole communicating with the annular groove is provided on the movable joint and is threadedly connected with a plug, and the diameter of the threaded hole is larger than the diameter of the ball. This design facilitates the installation and replacement of the ball, and also facilitates the replacement of the second sealing gasket. When the ball is worn or damaged, maintenance can be carried out in time to ensure the flexible rotation performance of the movable joint, thereby maintaining the normal working state of the inflation joint, reducing the maintenance cost and downtime of the equipment. When the second sealing gasket needs to be replaced, the ball is taken out and the movable joint is removed, and then the second sealing gasket is replaced.

[0028] Furthermore, the material of the ball is steel, which has high hardness and wear resistance, and can withstand the friction and pressure during the rotation of the movable joint, thereby ensuring the service life of the ball in the annular groove, reducing the inflexible rotation or failure of the movable joint due to ball wear, and improving the overall reliability and stability of the inflation joint, ensuring that the movable joint can always maintain good performance during multiple inflation operations.

[0029] Furthermore, the materials of the cam, push rod and limit block are all metal. Metal materials have good strength and stability, which can ensure the structural integrity and reliability of these components during the inflation process, withstand the gas pressure and the force during the movement of the push rod, and prevent the components from deformation or damage, thereby ensuring the normal operation of the inflation joint, improving the durability and safety of the inflation joint, reducing the frequency of replacing the inflation joint due to component damage, and reducing the cost of use.

[0030] Furthermore, the axial direction of the connecting rod, the axial direction of the air source nozzle and the axial direction of the limiting through hole are perpendicular to each other. This structural layout makes the overall structure of the inflation joint more reasonable and compact, avoids mutual interference between components, further optimizes the space utilization of the inflation joint, helps to reduce the volume of the inflation joint, makes it easier to install and operate in a narrow space, and also improves the overall stability and reliability of the inflation joint.

[0031] Furthermore, a second sealing pad is provided at the docking end, which can effectively ensure the sealed docking between the nozzle of the inflated equipment and the docking end, prevent gas leakage, improve the efficiency and accuracy of inflation, ensure that each inflation operation can reach the expected inflation pressure, ensure the normal inflation and use performance of the aircraft tires and hydraulic struts, and improve the operating safety of the aircraft.

[0032] Furthermore, a first sealing gasket is arranged between the connecting rod and the joint body, which ensures a sealed connection between the connecting rod and the joint body and prevents gas leakage from the connection between the connecting rod and the joint body, further improving the overall sealing of the inflation joint, ensuring the stability and reliability of the inflation process, reducing the situation of insufficient inflation or inflation failure due to gas leakage, and improving the success rate and safety of the inflation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 The structure of the inflatable joint of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 2 The structure of the inflatable joint of the present invention is shown in FIG. Figure 2 ;

[0036] Figure 3 The structure of the inflatable joint of the present invention is shown in FIG. Figure 3 ;

[0037] Figure 4 The structure of the inflatable joint of the present invention is shown in FIG. Figure 4 ;

[0038] In the figure: 1. Joint body; 2. Cam; 3. Twist handle; 4. Top cover; 5. Air source nozzle; 6. Vent hole; 7. Movable joint; 8. Ball bearing; 9. Push rod; 10. Limit block; 11. Second sealing gasket; 12. Threaded hole; 13. First sealing gasket; 14. Connecting rod; 15. Vent groove. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The purpose of the present invention is to provide an inflatable joint to solve the problems existing in the above-mentioned prior art, reduce the length of the inflatable joint, and facilitate installation in a narrow space.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] like Figures 1 to 4 As shown, this embodiment provides an inflatable joint, comprising:

[0043] A joint body 1, wherein a hollow cavity and a limiting through hole are arranged in the joint body 1, wherein one end of the limiting through hole is communicated with the hollow cavity and the other end is opened on the surface of the joint body 1;

[0044] An air source nozzle 5, which is fixedly connected to the joint body 1 and has an air vent 6 in communication with the hollow cavity;

[0045] A push rod 9, the push rod 9 is slidably matched with the limiting through hole, and a limiting block 10 is provided at one end of the push rod 9 located in the hollow cavity, and the diameter of the limiting block 10 is larger than the diameter of the limiting through hole; a ventilation groove 15 is provided on the side wall of the push rod 9, and the length of the ventilation groove 15 is larger than the length of the limiting through hole, and the ventilation groove 15 is used to connect the hollow cavity with the nozzle of the device to be inflated;

[0046] A cam 2 is arranged in the hollow cavity, and the cam 2 is used to drive the ejector rod 9 to slide relative to the limiting through hole;

[0047] A screw handle 3 is fixedly connected to the cam 2 via a connecting rod 14 and is used to drive the cam 2 to rotate, and the connecting rod 14 is sealedly connected to the joint body 1;

[0048] The movable joint 7, the end where the opening of the limit through hole in the joint body 1 is located is the butt end, the movable joint 7 is rotatably connected to the butt end, and the movable joint 7 is used to connect with the nozzle of the inflatable device.

[0049] A hollow cavity and a limit hole are provided in the joint body 1, and the push rod 9 is slidably matched with the limit hole. The cam 2 can drive the push rod 9 to slide, and the screw handle 3 is fixedly connected to the cam 2 through the connecting rod 14 to rotate the cam 2, thereby realizing precise control of the position of the push rod 9. This structural design makes the operation of the inflation joint more flexible and convenient. The movement of the push rod 9 can be easily controlled by screwing the handle 3, and then the valve in the nozzle of the inflatable device can be pushed open. Compared with the traditional inflation joint with an internal spiral adjustment structure, it greatly simplifies the operation process, improves the inflation efficiency, and reduces the failure rate caused by the complex structure.

[0050] The inflation joint of this embodiment abandons the traditional complex internal spiral adjustment structure, and drives the push rod 9 to move by rotating the cam 2 by twisting the handle 3, so as to make the structure of the entire inflation joint more compact, thereby effectively reducing the overall volume and length of the inflation joint, and being able to better adapt to the narrow space environment of the aircraft tire and hydraulic strut joint. It solves the problem that conventional inflation joints cannot be installed due to their large size, ensures the normal inflation and maintenance work of the aircraft tire and hydraulic strut, and improves the safety and reliability of the aircraft.

[0051] It is worth mentioning that a top cover 4 is also provided on the joint body 1, and the top cover 4 is detachably connected to the joint body 1, such as a threaded connection. The joint body 1 is provided with a top opening corresponding to the top cover 4, and the top opening is communicated with the hollow cavity, and the hollow cavity is located between the limiting through hole and the top opening. After removing the top cover 4, the top rod 9, the cam 2 and other structures can be inserted through the top opening for easy installation.

[0052] In this embodiment, an annular groove is formed between the movable joint 7 and the joint body 1, and a plurality of balls 8 are arranged circumferentially in the annular groove; this design enables the movable joint 7 to rotate more flexibly when connected to the nozzle of the device to be inflated, and facilitates the adjustment of the angle to adapt to nozzles at different positions and angles, further improving the installation convenience and adaptability of the inflation joint in narrow spaces, ensuring a tight and accurate connection between the inflation joint and the nozzle of the device to be inflated, reducing the risk of gas leakage, and improving the stability and safety of inflation.

[0053] In the optional scheme of the present embodiment, it is more preferred that a threaded hole 12 communicating with the annular groove is provided on the movable joint 7, and the threaded hole 12 is threadedly connected with a plug (not shown in the figure), and the diameter of the threaded hole 12 is larger than the diameter of the ball 8; the design of the threaded hole 12 facilitates the installation and replacement of the ball 8, and also facilitates the replacement of the second sealing gasket 11. When the ball 8 is worn or damaged, maintenance can be carried out in time to ensure the flexible rotation performance of the movable joint 7, thereby maintaining the normal working state of the inflation joint, reducing the maintenance cost and downtime of the equipment, and when the second sealing gasket 11 needs to be replaced, the ball 8 is taken out and the movable joint 7 is removed, and then the second sealing gasket 11 is replaced.

[0054] In this embodiment, the material of the ball 8 is steel, which has high hardness and wear resistance, can withstand the friction and pressure during the rotation of the movable joint 7, thereby ensuring the service life of the ball 8 in the annular groove, reducing the inflexible rotation or failure of the movable joint 7 due to the wear of the ball 8, improving the overall reliability and stability of the inflation joint, and ensuring that the movable joint 7 can always maintain good performance during multiple inflation operations.

[0055] In this embodiment, the axial direction of the connecting rod 14, the axial direction of the air source nozzle 5 and the axial direction of the limiting through hole are perpendicular to each other. This structural layout makes the overall structure of the inflation joint more reasonable and compact, avoids mutual interference between components, further optimizes the space utilization of the inflation joint, helps to reduce the volume of the inflation joint, makes it easier to install and operate in a narrow space, and also improves the overall stability and reliability of the inflation joint.

[0056] The butt end of the joint body 1 needs to be sealed and butt-jointed with the nozzle of the device to be inflated. Specifically:

[0057] A second sealing pad 11 is provided at the docking end, and the second sealing pad 11 is used to ensure the sealed docking between the nozzle of the equipment to be inflated and the docking end. The setting of the second sealing pad 11 can effectively ensure the sealed docking between the nozzle of the equipment to be inflated and the docking end, prevent gas leakage, improve the efficiency and accuracy of inflation, ensure that each inflation operation can reach the expected inflation pressure, ensure the normal inflation and use performance of the aircraft tires and hydraulic struts, and improve the operating safety of the aircraft.

[0058] In this embodiment, the materials of the cam 2, the push rod 9 and the limit block 10 are all metal. The metal material has good strength and stability, and can ensure the structural integrity and reliability of these components during the inflation process, withstand the gas pressure and the force during the movement of the push rod 9, and prevent the components from being deformed or damaged, thereby ensuring the normal operation of the inflation joint, improving the durability and safety of the inflation joint, reducing the frequency of replacing the inflation joint due to component damage, and reducing the cost of use.

[0059] In this embodiment, the push rod 9 is cylindrical, and the length direction of the ventilation groove 15 is parallel to the axial direction of the push rod 9 .

[0060] In this embodiment, there is a gap between the inner wall of the hollow cavity and the limiting block 10 , and the existence of the gap ensures that the ventilation groove 15 is connected with the ventilation hole 6 .

[0061] In the optional scheme of this embodiment, it is more preferred that a first sealing gasket 13 is provided between the connecting rod 14 and the joint body 1. The setting of the first sealing gasket 13 ensures the sealed connection between the connecting rod 14 and the joint body 1, prevents gas leakage from the connection between the connecting rod 14 and the joint body 1, further improves the overall sealing of the inflation joint, ensures the stability and reliability of the inflation process, reduces the situation of insufficient inflation or inflation failure due to gas leakage, and improves the success rate and safety of the inflation operation.

[0062] The specific method of using the inflation connector of this embodiment is as follows:

[0063] When in use, first connect the movable joint 7 of the inflation joint to the nozzle of the device to be inflated (such as the tire of an aircraft), and connect the air source nozzle 5 to the air source, then rotate the screw handle 3 to drive the internal cam 2 to rotate, and the top of the highest point of the cam 2 will push the internal push rod 9 outward (refer to Figure 4 ), thereby pushing open the nozzle valve of the device to be inflated. At this time, the entire air circuit is opened, and inflation can be carried out by opening the air outlet of the air source; after the inflation is completed, the screw handle 3 is rotated in the opposite direction to drive the cam 2 to rotate, and the top of the cam 2 no longer pushes the push rod 9 outward, and the nozzle valve of the device to be inflated returns to its original position and is closed under the action of its own spring, and then the movable joint 7 is disassembled from the nozzle of the device to be inflated, and the air source nozzle 5 is disconnected from the air source.

[0064] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An inflatable joint, characterized in that: include: A joint body, wherein a hollow cavity and a limiting through hole are arranged in the joint body, one end of the limiting through hole is communicated with the hollow cavity, and the other end is opened on the surface of the joint body; An air source nozzle, the air source nozzle is fixedly connected to the joint body, and a vent hole communicating with the hollow cavity is provided in the air source nozzle; A push rod, the push rod is slidably matched with the limiting through hole, and a limiting block is arranged at one end of the push rod located in the hollow cavity, the diameter of the limiting block is larger than the diameter of the limiting through hole; a ventilation groove is arranged on the side wall of the push rod, the length of the ventilation groove is larger than the length of the limiting through hole, and the ventilation groove is used to connect the hollow cavity with the nozzle of the device to be inflated; A cam disposed in the hollow cavity, the cam being used to drive the push rod to slide relative to the limiting through hole; A screwing handle which is fixedly connected to the cam via a connecting rod and is used to drive the cam to rotate, wherein the connecting rod is sealedly connected to the joint body; The movable joint, the end of the joint body where the opening of the limiting through hole is located is the docking end, the movable joint is rotatably connected to the docking end, and the movable joint is used to connect to the nozzle of the inflatable device.

2. The inflatable joint according to claim 1, characterized in that: An annular groove is formed between the movable joint and the joint body, and a plurality of balls are arranged in the annular groove along the circumferential direction.

3. The inflatable joint according to claim 2, characterized in that: The movable joint is provided with a threaded hole communicated with the annular groove, the threaded hole is threadedly connected with a plug, and the diameter of the threaded hole is greater than the diameter of the ball.

4. The inflatable joint according to claim 2, characterized in that: The material of the balls is steel.

5. The inflatable joint according to claim 1, characterized in that: The axial direction of the connecting rod, the axial direction of the air source nozzle and the axial direction of the limiting through hole are perpendicular to each other.

6. The inflatable joint according to claim 1, characterized in that: The butt joint end is provided with a second sealing pad, and the second sealing pad is used to seal the butt joint between the nozzle of the inflatable device and the butt joint end.

7. The inflatable joint according to claim 1, characterized in that: The cam, the push rod and the limit block are all made of metal.

8. The inflatable joint according to claim 1, characterized in that: The push rod is cylindrical, and the length direction of the ventilation groove is parallel to the axial direction of the push rod.

9. The inflatable joint according to claim 1, characterized in that: There is a gap between the inner wall of the hollow cavity and the limiting block.

10. The inflatable joint according to claim 1, characterized in that: A first sealing gasket is arranged between the connecting rod and the joint body.

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