Three-coaxial connector for eddy current

Abstract

The utility model relates to the technical field of coaxial connectors, and provides a tri-coaxial connector for eddy current, which comprises a connector main body, two fixing rods are fixedly connected to the inner surface of the connector main body, and a main case is fixedly connected to one ends, far away from the connector main body, of the two fixing rods. A threaded rod is rotationally connected to the interior of the main machine shell and extends upwards to form one end, the rotation directions of threads on the two sides of the threaded rod are opposite, the outer surface of the threaded rod is in threaded connection with two inner threaded sleeves, first shaft blocks are fixedly connected to the two sides of each inner threaded sleeve, and connecting rods are rotationally connected to the interiors of the first shaft blocks. The ends, away from the first shaft blocks, of the two connecting rods are rotationally connected with second shaft blocks. According to the utility model, external tension, pressure or twisting force can be better borne, the risk of accidental disconnection caused by loose connection is reduced, and accurate alignment among the inner conductor, the outer conductor and the shielding layer can be maintained, so that good electrical performance is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxial connectors, in particular to a triaxial connector for eddy current. Background Art

[0002] The triaxial connector for eddy current mainly has the following functions: it can efficiently and stably transmit signals related to eddy current, ensuring the accuracy and integrity of the signals. The triaxial structure helps to shield external electromagnetic interference, ensuring the purity of the eddy current signals. It also ensures impedance matching between the connector and the connected devices to reduce signal reflection and energy loss. In short, the triaxial connector for eddy current plays a key bridging role in the application of eddy current technology, ensuring the stable operation and accurate measurement of the entire system.

[0003] However, in the prior art, for example, Chinese Publication No.: CN221041826U, "A Triaxial Connector", a triaxial connector includes an inner conductor, an intermediate conductor, a housing, an inner insulator, an outer insulator, an insulating cover plate, a welding sleeve, and a compression nut. Its characteristics are: the tail end of the inner conductor is a wire pressing cylinder, and an axial wire pressing hole is provided on the hole wall at the tail end of the intermediate conductor. Each conductor and insulator are provided with inner holes and outer circular steps. An axial straight groove is provided outside the insulating cover plate. The inner conductor, the inner insulator, the intermediate conductor, the outer insulator, the insulating cover plate, and the housing are sleeved together to form a triaxial structure. When in use, two twisted wires inside the double-twisted shielded cable are respectively crimped and connected to the inner conductor and the intermediate conductor. The cable shielding layer is welded to the welding sleeve, and then it is inserted from the tail end of the housing and fixed by the compression nut.

[0004] However, this device does not have a structure with an expanded outer diameter, and cannot better withstand external tensile, compressive, or torsional forces. Loose connections increase the risk of accidental disconnection, which is not conducive to maintaining the precise alignment between the inner and outer conductors and the shielding layer, thus maintaining good electrical performance. The device does not have a structure for disassembling and replacing the pin core. When the pin core is damaged or fails, the entire connector needs to be replaced, and only replacing the pin core is not possible, which greatly increases the maintenance and replacement costs and cannot quickly locate and solve problems, causing inconvenience to maintenance, upgrading, and cost control. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, such as not being able to better withstand external tensile, compressive, or torsional forces, loose connections increasing the risk of accidental disconnection, not being conducive to maintaining the precise alignment between the inner and outer conductors and the shielding layer, thus maintaining good electrical performance. When the pin core is damaged or fails, the entire connector needs to be replaced, and only replacing the pin core is not possible, which greatly increases the maintenance and replacement costs and cannot quickly locate and solve problems, causing inconvenience to maintenance, upgrading, and cost control.

[0006] To achieve the above object, the present utility model adopts the following technical solution: A three-coaxial connector for eddy current, comprising a connector body. Two fixing rods are fixedly connected to the inner surface of the connector body. One end of the two fixing rods away from the connector body is fixedly connected to a main housing. A threaded rod is rotatably connected to the inside of the main housing and extends upward by one end. The threaded rotation directions on both sides of the threaded rod are opposite. Two internally threaded sleeves are threadedly connected to the outer surface of the threaded rod. Both sides of the internally threaded sleeve are fixedly connected to a first shaft block. A connecting rod is rotatably connected to the inside of the first shaft block. One end of the two connecting rods away from the first shaft block is rotatably connected to a second shaft block. One side of the second shaft block away from the threaded rod is fixedly connected to an outer support rod. The outer surface of the outer support rod is movably embedded on the outside of the main housing. One end of the outer support rod away from the second shaft block is arranged on the inner surface of the connector body. When the two internally threaded sleeves approach each other, one end of the connecting rod will be driven by the first shaft block, and the other end of the connecting rod will push the outer support rod through the second shaft block.

[0007] As a preferred embodiment, a threaded groove is provided on the outer surface of the connector body, and a plurality of stress grooves are provided on the outer surface of the connector body. The connector body is connected to the electrical pipeline through the threaded groove.

[0008] As a preferred embodiment, a driven bevel gear is fixedly connected to the top of the threaded rod. A driving bevel gear is meshed with the outer surface of the driven bevel gear. The driving bevel gear rotating along with the power rod will drive the driven bevel gear under the meshing action.

[0009] As a preferred embodiment, a power rod is fixedly embedded in the inside of the driving bevel gear. The outer surface of the power rod is rotatably connected to the inside of the connector body and extends by one end. A knob is fixedly connected to the extended end of the power rod. By turning the knob, the power rod rotates inside the connector body.

[0010] As a preferred embodiment, a stabilizing cylinder is fixedly embedded in the inner surface of the connector body. A plurality of connecting rods are fixedly embedded in the inside of the stabilizing cylinder. The outer surfaces of the plurality of connecting rods are movably embedded on the outside of the connector body. The connecting rods can move inside the stabilizing cylinder.

[0011] As a preferred embodiment, one end of the two connecting rods is fixedly connected to a stress rod. A tension spring is movably sleeved on the outer surface of the connecting rod. One end of the two tension springs away from the connector body is fixedly connected to one side of the stress rod. One end of the tension spring away from the stress rod is fixedly connected to the outer surface of the connector body. By pulling the stress rods on both sides, the tension springs can be stretched, and the connecting rods can move outward inside the stabilizing cylinder.

[0012] As a preferred embodiment, clamping plates are fixedly connected to the ends of the two connecting rods away from the stress rod. A fixing groove is formed on one side of the clamping plate, and under the elastic force of the tension spring, the clamping plate clamps and fixes the internal connecting plate.

[0013] As a preferred embodiment, a connecting plate is arranged inside the two fixing grooves. A plurality of needle cores are fixedly connected to the top of the connecting plate, and the connector body can be connected to a sensor or device by inserting the needle cores.

[0014] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0015] 1. In the present utility model, the device is provided with a pipe diameter outward expansion structure, which can better withstand external tensile force, pressure or torsional force, reduces the risk of accidental disconnection due to connection loosening, is conducive to maintaining the precise alignment between the inner and outer conductors and the shielding layer, and thus maintains good electrical performance.

[0016] 2. In the present utility model, the device is provided with a needle core disassembly and replacement structure. When the needle core is damaged or fails, there is no need to replace the entire connector, only the needle core needs to be replaced, which greatly reduces the maintenance and replacement costs, can quickly locate and solve problems, and provides convenience for maintenance, upgrading and cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a three-dimensional structure diagram of a three-coaxial connector for eddy current provided by the present utility model;

[0018] Figure 2 FIG. 2 is a bottom structure diagram of a three-coaxial connector for eddy current provided by the present utility model;

[0019] Figure 3 FIG. 3 is a sectional structure diagram of a three-coaxial connector for eddy current provided by the present utility model;

[0020] Figure 4 FIG. 4 is a sectional structure diagram of the main housing of a three-coaxial connector for eddy current provided by the present utility model;

[0021] Figure 5 FIG. 5 is an enlarged structure diagram of A in a three-coaxial connector for eddy current provided by the present utility model; Figure 3

[0022] LEGEND DESCRIPTION:

[0023] ​1. Connector body; 2. Fixed rod; 3. Main housing; 4. Threaded rod; 5. Internal thread sleeve; 6. First shaft block; 7. Connecting rod; 8. Second shaft block; 9. Outer support rod; 10. Thread groove; 11. Stress groove; 12. Driven bevel gear; 13. Driving bevel gear; 14. Power rod; 15. Knob; 16. Stabilizing cylinder; 17. Connecting rod; 18. Stress rod; 19. Tension spring; 20. Clamping plate; 21. Fixed groove; 22. Connecting plate; 23. Needle core. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a three - coaxial connector for eddy current, including a connector body 1. Two fixed rods 2 are fixedly connected to the inner surface of the connector body 1. One end of the two fixed rods 2 away from the connector body 1 is fixedly connected to a main housing 3. A threaded rod 4 is rotatably connected to the inside of the main housing 3 and extends upward at one end. The thread rotation directions on both sides of the threaded rod 4 are opposite. Two internal thread sleeves 5 are threadedly connected to the outer surface of the threaded rod 4. Both sides of the internal thread sleeve 5 are fixedly connected to a first shaft block 6. A connecting rod 7 is rotatably connected to the inside of the first shaft block 6. One end of the two connecting rods 7 away from the first shaft block 6 is rotatably connected to a second shaft block 8. One side of the second shaft block 8 away from the threaded rod 4 is fixedly connected to an outer support rod 9. The outer surface of the outer support rod 9 is movably embedded on the outside of the main housing 3. One end of the outer support rod 9 away from the second shaft block 8 is arranged on the inner surface of the connector body 1. Because the thread rotation directions on both sides of the threaded rod 4 are opposite, the two internal thread sleeves 5 move in opposite directions.

[0026] As Figures 1 to 5 shown, a thread groove 10 is opened on the outer surface of the connector body 1, and a plurality of stress grooves 11 are opened on the outer surface of the connector body 1. When the outer support rod 9 extends outwards, under the action of the opened stress grooves 11, the outer diameter of the connector body 1 expands, and it can better withstand external tensile, compressive or torsional forces.

[0027] As Figures 1 to 5 shown, a driven bevel gear 12 is fixedly connected to the top of the threaded rod 4. A driving bevel gear 13 is meshed with the outer surface of the driven bevel gear 12. The driving bevel gear 13 that rotates following the power rod 14 will drive the driven bevel gear 12 under the meshing action.

[0028] AsFigures 1 to 5 As shown in the figure, a power rod 14 is fixedly embedded inside the driving bevel gear 13. The outer surface of the power rod 14 is rotatably connected inside the connector body 1 and extends out at one end. A knob 15 is fixedly connected to the extended end of the power rod 14. By means of the knob 15, the power rod 14 rotates inside the connector body 1.

[0029] As Figures 1 to 5 shown in the figure, a stabilizing cylinder 16 is fixedly embedded on the inner surface of the connector body 1. A plurality of connecting rods 17 are fixedly embedded inside the stabilizing cylinder 16. The outer surfaces of the plurality of connecting rods 17 are movably embedded outside the connector body 1. The connecting rods 17 can move inside the stabilizing cylinder 16.

[0030] As Figures 1 to 5 shown in the figure, one end of two connecting rods 17 is fixedly connected to a stress rod 18. A tension spring 19 is movably sleeved on the outer surface of the connecting rod 17. One end of the two tension springs 19 away from the connector body 1 is fixedly connected to one side of the stress rod 18. One end of the tension spring 19 away from the stress rod 18 is fixedly connected to the outer surface of the connector body 1. By pulling the stress rods 18 on both sides, the tension springs 19 can be stretched, and the connecting rods 17 can be moved outward inside the stabilizing cylinder 16.

[0031] As Figures 1 to 5 shown in the figure, one end of the two connecting rods 17 away from the stress rod 18 is fixedly connected to a clamping plate 20. A fixing groove 21 is formed on one side of the clamping plate 20. Under the elastic force of the tension spring 19, the clamping plate 20 clamps and fixes the internal connecting plate 22.

[0032] As Figures 1 to 5 shown in the figure, a connecting plate 22 is arranged inside the two fixing grooves 21. A plurality of needle cores 23 are fixedly connected to the top of the connecting plate 22. By inserting the needle cores 23, the connector body 1 can be connected to a sensor or a device.

[0033] Working principle: First, connect the connector body 1 to the electrical conduit through the threaded groove 10. Then, rotate the power rod 14 inside the connector body 1 by turning the knob 15. The driving bevel gear 13 that rotates with the power rod 14 will drive the driven bevel gear 12 under the meshing action, and cause the threaded rod 4 to rotate inside the main housing 3. The main housing 3 is connected inside the connector body 1 through the fixing rod 2. The rotating thread will drive the internal thread sleeve 5. Since the thread rotation directions on both sides of the threaded rod 4 are opposite, the two internal thread sleeves 5 move in opposite directions. When the two internal thread sleeves 5 approach each other, one end of the connecting rod 7 will be driven by the first shaft block 6. The other end of the connecting rod 7 will push the outer support rod 9 through the second shaft block 8. When the outer support rod 9 extends outwards, under the action of the stress groove 11 provided, the diameter of the connector body 1 expands outwards, enabling it to better withstand external tensile, compressive or torsional forces, reducing the risk of accidental disconnection due to loosening of the connection, facilitating maintaining the precise alignment between the inner and outer conductors and the shielding layer, and thus maintaining good electrical performance. Then, the connector body 1 can be connected to the sensor or device by inserting the needle core 23. When the internal needle core 23 wears out and needs to be replaced, the force-receiving rods 18 on both sides can be pulled to stretch the tension spring 19, causing the connecting rod 17 to move outwards inside the stable cylinder 16, and the connecting plate 22 will disengage from the fixing groove 21 inside the clamping plate 20, and then the connecting plate 22 and the needle core 23 can be taken out for replacement.

[0034] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A triaxial connector for eddy current, comprising a connector body (1), characterized in that: The inner surface of the connector body (1) is fixedly connected with two fixing rods (2), and one end of the two fixing rods (2) away from the connector body (1) is fixedly connected with a main housing (3), and the inside of the main housing (3) is rotatably connected with a threaded rod (4) and one end extends upward, and the threads on both sides of the threaded rod (4) rotate in opposite directions, and the outer surface of the threaded rod (4) is threadedly connected with two internal threaded sleeves (5), and both sides of the internal threaded sleeve (5) are fixedly connected with a first shaft block (6), and the inside of the first shaft block (6) is rotatably connected with a connecting rod (7), and one end of the two connecting rods (7) away from the first shaft block (6) is rotatably connected with a second shaft block (8), and the side of the second shaft block (8) away from the threaded rod (4) is fixedly connected with an outer support rod (9), and the outer surface of the outer support rod (9) is movably embedded in the outer side of the main housing (3), and the end of the outer support rod (9) away from the second shaft block (8) is arranged on the inner surface of the connector body (1).

2. A triaxial connector for eddy current according to claim 1, characterized in that: The outer surface of the connector body (1) is provided with a thread groove (10), and the outer surface of the connector body (1) is provided with a plurality of stress grooves (11).

3. A triaxial connector for eddy current according to claim 1, characterized in that: A driven bevel gear (12) is fixedly connected to the top of the threaded rod (4), and a driving bevel gear (13) is meshedly connected to the outer surface of the driven bevel gear (12).

4. A triaxial connector for eddy current according to claim 3, characterized in that: A power rod (14) is fixedly embedded inside the active bevel gear (13), and the outer surface of the power rod (14) is rotatably connected to the inside of the connector body (1) and extends out at one end, and the extended end of the power rod (14) is fixedly connected to a knob (15).

5. A triaxial connector for eddy current according to claim 1, characterized in that: A stabilizing cylinder (16) is fixedly embedded on the inner surface of the connector body (1), a plurality of connecting rods (17) are fixedly embedded inside the stabilizing cylinder (16), and the outer surfaces of the plurality of connecting rods (17) are movably embedded on the outer side of the connector body (1).

6. A triaxial connector for eddy current according to claim 5, characterized in that: One end of the two connecting rods (17) is fixedly connected to a force-bearing rod (18), and a tension spring (19) is movably sleeved on the outer surface of the connecting rod (17). One end of the two tension springs (19) away from the connector body (1) is fixedly connected to one side of the force-bearing rod (18), and one end of the tension spring (19) away from the force-bearing rod (18) is fixedly connected to the outer surface of the connector body (1).

7. A triaxial connector for eddy current according to claim 6, characterized in that: One end of the two connecting rods (17) away from the force-bearing rod (18) is fixedly connected to a clamping plate (20), and a fixing groove (21) is provided on one side of the clamping plate (20).

8. A triaxial connector for eddy current according to claim 7, characterized in that: A connecting plate (22) is arranged inside the two fixing grooves (21), and a plurality of needle cores (23) are fixedly connected to the top of the connecting plate (22).

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