Plug for rotary connector and rotary connector thereof

Abstract

The invention discloses a plug for a rotary connector and the rotary connector thereof, belongs to the field of electrical connection, solves the defects that the plug of a connector in the prior art is large in size and difficult to process, and mainly provides the plug for the rotary connector. The plug is sleeved with a plurality of electric connecting rings which are axially arranged at intervals, an insulating part is arranged between the axial faces of every two adjacent electric connecting rings, through holes extending axially are formed in the electric connecting rings, conducting rods are correspondingly arranged in the through holes, and conducting elastic parts are arranged between the conducting rods and the corresponding through holes. Stable electric connection is formed among the electric connecting rings, the conductive elastic piece and the conductive rod, and the conductive rod is insulated from the other electric connecting rings. The connector is mainly used for realizing mutual conversion of axial and radial signals of the plug of the connector, and low-cost processing of a small-size plug can be satisfied.

Description

Technical Field

[0001] The present application relates to the field of electrical connections, and in particular to a plug for a rotary connector and the rotary connector thereof. Background Art

[0002] In some application scenarios, such as the use scenario of drilling equipment, in order to simultaneously achieve reliable transmission of multiple signals and to adapt to the situation where the plug and the socket can be rotated and inserted at a certain angle, the docking part of the plug and the socket is designed to be convenient for screwing and inserting while not affecting the reliable transmission of signals. During the installation and use of the drill bit, rotary geosteering system, and some logging-while-drilling equipment in oil exploration, the drill bit, rotary geosteering system, and some logging-while-drilling equipment will perform rotational movements within a 360° spatial range. While the above-mentioned equipment is performing 360° rotational movements, after the electrical connector plug and socket installed at both ends of the equipment are plugged together, the plug can perform a 360° rotational movement around the insertion axis. When the equipment is in use, stable transmission of multiple electrical signals between the equipment can be achieved stably and reliably.

[0003] Most of the existing electrical rotary connectors adopt an integrated structure, generally provided with multiple bearings, with large structural dimensions, heavy weight, and prone to phenomena such as wire jumping of the brush. Moreover, in a rotary connector with a smaller size, the installation of the plug is more difficult, and it is necessary to integrate the wires of the plug into a smaller space, with high requirements for electrical connections such as welding, increasing the production and manufacturing costs, and the applicable scope of the rotatable connector in the deep drilling field is limited. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art that the plug of the connector is large in size and difficult to process, the present application provides a plug for a rotary connector, which can realize the mutual conversion of axial and radial signals of the plug of the connector and can meet the low-cost processing of small-sized plugs.

[0005] To achieve the above object, the present application adopts the following technical solution: A plug for a rotary connector, on which a plurality of electrically connected rings are sleeved at axial intervals, an insulating member is provided between the axial surfaces of adjacent two of the electrically connected rings, the electrically connected rings are provided with through holes extending axially, conductive rods are correspondingly provided in the through holes, and conductive elastic members are provided between the conductive rods and the corresponding through holes so as to form a stable electrical connection among the electrically connected rings, the conductive elastic members, and the conductive rods, and the conductive rods are insulated from the remaining electrically connected rings.

[0006] After adopting the above technical solution, the present application has the following advantages: The electrical connection generated by the cooperation between the conductive rod and the through hole enables the conductive rod to be electrically connected to the corresponding electrical connection ring, enabling the plug to convert the axial circuit of the conductive rod into a radial circuit of the electrical connection ring. And compared with directly connecting the wire to the electrical connection ring, the connection method of the conductive rod is simpler; Secondly, by using the conductive elastic member as the electrical connection medium between the conductive rod and the electrical connection ring, the plug can have better adaptability in special occasions such as the working occasion of drilling equipment. In the case of some vibrations of the equipment, the conductive elastic member can adapt to a certain degree of vibration of the plug without disconnecting the signal, which further improves the rotary connector under special working conditions. Compared with the plug that does not use the conductive elastic member, when vibrating, the conductive part of the conductive rod may be misaligned with the electrical connection ring, which may cause signal interruption, or in the case of hard connection, the conductive rod and the electrical connection ring may be damaged under long-term vibration, resulting in the plug being unable to continue working. At this time, it is necessary to stop work and production for maintenance, which will cause greater economic losses.

[0007] Further, a step is provided in the through hole, a first shoulder adapted to the step of the through hole is provided on the conductive rod, the conductive elastic member is located between the step and the first shoulder, and after the plug is installed, the step presses the conductive elastic member against the first shoulder.

[0008] Adopting the foregoing technical solution, this structural design of pressing the conductive elastic member against the first shoulder by the step can prevent the conductive elastic member from being excessively deformed, distorted or even disengaged from its original connection position due to insufficient restraint during the operation of the equipment (such as in the case of vibration, shaking, etc.), thereby extending the service life of the conductive elastic member, reducing the frequency of replacing plug components or maintenance due to damage of the conductive elastic member, and also providing a certain installation position reference for the conductive rod during the assembly process of the plug, improving the assembly efficiency and accuracy.

[0009] Further, the through holes with steps are axially staggered, and each conductive rod extends to one end of the plug.

[0010] Adopting the foregoing technical solution, the through holes with steps are axially staggered, avoiding the axial interference between each conductive rod and its corresponding connecting components, making the structure of the entire plug more compact, which is beneficial to reducing the overall size of the plug, and each conductive rod extends to one end of the plug, making the connection between the external wire and the conductive rod more convenient, facilitating the electrical connection between the external wire and the conductive rod through welding or other means, and making the external wire conduct with the electrical connection ring.

[0011] Further, there are A electrical connection rings sleeved on the plug. Each of the electrical connection rings is provided with ≥A uniformly distributed through holes, and one of the through holes is a flat hole with a step. The first shoulder of the conductive rod is adapted to the flat hole. The rod body of the conductive rod passes through the through holes of the remaining electrical connection rings to one end of the plug, and one end of the conductive rod passing through the electrical connection ring is electrically connected to a first wire.

[0012] Adopting the foregoing technical solution, multiple uniformly distributed through holes are provided on each electrical connection ring, which means that the corresponding number of conductive rods can be flexibly configured according to actual signal transmission requirements, so as to realize the simultaneous transmission of different numbers and different types of signals, greatly enhancing the adaptability of the plug to diverse application scenarios. One of the through holes is designed as a flat hole with a step, and the first shoulder of the conductive rod is adapted thereto. Such a special shape matching design can accurately determine the position of the conductive rod on the corresponding electrical connection ring, effectively preventing unnecessary rotation or displacement of the conductive rod in the axial direction, and ensuring the stability of the electrical connection between the conductive rod and the first wire.

[0013] Further, the plug further includes a housing for connecting the drilling equipment and a connector for sleeving the electrical connection ring. The connector is provided with a second shoulder with a radial dimension larger than that of the electrical connection ring. A clamping portion for clamping the second shoulder of the electrical connection ring is provided in the housing. An abutting member for abutting the second shoulder against the clamping portion is further provided in the housing, and the abutting member is fixedly connected to the housing by screws.

[0014] Adopting the foregoing technical solution, the clamping of the second shoulder and the clamping portion provides accurate positioning for the electrical connection ring on the connector. The abutting member further tightly abuts the second shoulder against the clamping portion. Coupled with the fact that the abutting member is fastened to the housing by screws, the electrical connection ring on the connector and the housing connector are relatively fixed in the axial direction. This stable fixing method can effectively resist various impact forces and vibration forces generated during the operation of the drilling equipment, prevent the electrical connection ring from loosening, shifting, etc., ensure the integrity and stability of the conductive path, and guarantee that the signal transmission is not interfered.

[0015] Further, a card slot is provided on one of the second shoulder of the connector or the clamping portion in the housing, and a card block adapted to the card slot is provided on the other.

[0016] Adopting the foregoing technical solution, through the cooperation of the card slot and the card block, the housing and the connector are relatively fixed in the circumferential direction. This stable fixing method can effectively resist various impact forces and vibration forces generated during the operation of the drilling equipment, prevent the electrical connection ring from loosening, shifting, etc., ensure the integrity and stability of the conductive path, and guarantee that the signal transmission is not interfered.

[0017] Further, the abutting member is of an annular structure and is fixedly connected to the housing by using a plurality of screws.

[0018] With the foregoing technical solution, the pressing member adopts an annular structure and can achieve an all-round pressing effect around the second shoulder of the connector head. When it is fixedly connected to the housing by a plurality of screws, the plurality of screws are evenly distributed on the annular structure, so that the pressing force can be evenly applied to the second shoulder to the clamping portion inside the housing. This uniform pressing force can ensure that the electrical connection ring is stably and evenly fixed both axially and radially, avoiding situations such as tilting and displacement of the electrical connection ring caused by uneven local stress, thereby ensuring the stable installation of the electrical connection ring inside the plug, which is of great significance for maintaining a stable signal transmission path.

[0019] Furthermore, each of the conductive rods extends to one end close to the housing, and a first wire is welded to the end of the conductive rod. After the pressing member presses the second shoulder to the clamping portion, the welding joint of the first wire is sealed with insulating glue.

[0020] With the foregoing technical solution, the welding joint of the first wire is sealed with insulating glue, so that each first wire is relatively fixed with respect to the housing and the connector head, avoiding the possibility of signal short circuit, increasing the safety of electrical signal transmission, and blocking the entry of external dust into the welding joint, ensuring the normal operation of the circuit, avoiding safety accidents caused by electrical failures, and improving the safety of plug use.

[0021] Furthermore, an insulating ring is provided in the through hole, or an insulating coating is applied to the rod body of the conductive rod to insulate the rod body of the conductive rod from the rest of the electrical connection rings.

[0022] With the foregoing technical solution, by using an insulating ring or an insulating coating, the conductive rod only makes electrical connection with the corresponding electrical connection ring and remains insulated from the rest of the electrical connection rings.

[0023] A rotary connector includes the above-mentioned plug and socket, and further includes a socket. The socket includes a connection cavity adapted to the plug extending axially. An electrical connection ring surrounding the connection cavity for one week is fixedly provided on the side wall of the connection cavity, and the electrical connection ring is made of a deformable material so that the plug and the socket can be plugged and separated. The electrical connection ring is electrically connected to a corresponding second wire. When the plug is plugged into the socket, the electrical connection ring abuts against the electrical connection ring to form an electrical connection, so that the first wire and the second wire are electrically connected.

[0024] With the foregoing technical solution, the electrical connection loop is made of a material that is easily deformable. When the plug is inserted into the socket, the electrical connection ring abuts against the electrical connection loop, causing the electrical connection loop to deform. This deformation enables a tight fit between the electrical connection ring and the electrical connection loop, thereby ensuring good electrical contact. Since electrical connection can be achieved around the plug and the socket, when the plug and the socket rotate relative to each other, the plug and the socket can maintain electrical connection, ensuring stable and complete signal transmission. Moreover, whether the plug and the socket are inserted directly or rotated during insertion, electrical connection can be completed. The design of this structure enables the drilling equipment to complete electrical connection without aligning to a specific angle during connection, enhancing its applicability in complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present application with reference to the accompanying drawings: Figure 1 Schematic diagram of the connector in the plug for a rotary connector of the present application; Figure 2 Schematic diagram of a plug for a rotary connector; Figure 3 For Figure 2 Cross-sectional view taken along line B-B in Figure 4 For Figure 1 Enlarged view at A in Figure 5 Schematic diagram when the plug and the socket of a rotary connector are inserted.

[0026] BRIEF DESCRIPTION OF THE DRAWINGS: 1. Plug; 11. Housing; 111. Clamping portion; 112. Clamping block; 12. Connector; 121. Second shoulder; 122. Card slot; 13. Screw rod; 14. End cap; 2. Electrical connection ring; 21. Through hole; 22. Step; 23. Flat hole; 24. Insulating ring; 25. Central hole; 26. Countersunk head nail; 3. Insulating member; 4. Conductive rod; 41. First shoulder; 5. Conductive elastic member; 6. First wire; 7. Tightening member; 71. Screw; 8. Insulating glue; 9. Socket; 91. Connection cavity; 92. Electrical connection loop; 93. Second wire; 10. Sealing and wire-fixing glue. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0028] The terms "first", "second", etc. (if any) in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used in front of a technical feature to make a distinction, it does not necessarily imply the existence of "first". It should be understood that in this application, "comprising" and "having" and any of their variations are intended to cover non-exclusive inclusion. It should be understood that in this application, "a plurality of" means two or more. "And / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, X and / or Y can mean: X exists alone, X and Y exist simultaneously, or Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Comprising X, Y, and Z" and "comprising X, Y, Z" mean that all of X, Y, and Z are included. "Comprising X, Y, or Z" means that one of X, Y, and Z is included. "Comprising X, Y, and / or Z" means that any one or any two or all three of X, Y, and Z are included.

[0029] The technical solution of this application will be described in detail below with specific embodiments. These several specific embodiments can be combined or replaced according to the actual situation, and the same or similar concepts or processes may not be repeated in some embodiments.

[0030] As Figures 1 to 4 shown, this application provides a plug for a rotary connector. A plurality of electrically connecting rings 2 are sleeved on the plug 1 at axially spaced intervals. An insulating member 3 is provided between the axial surfaces of two adjacent electrically connecting rings 2. An axially extending through hole 21 is provided in the electrically connecting ring 2. A conductive rod 4 is correspondingly provided in the through hole 21. A conductive elastic member 5 is provided between the conductive rod 4 and the corresponding through hole 21 to form an electrical connection among the electrically connecting ring 2, the conductive elastic member 5, and the conductive rod 4. The conductive rod 4 is insulated from the remaining electrically connecting rings 2.

[0031] After adopting the above technical solution, the present application has the following advantages: The electrical connection generated by the cooperation between the conductive rod 4 and the through hole 21 enables the conductive rod 4 to be electrically connected to the corresponding electrical connection ring 2, enabling the plug 1 to convert the axial circuit of the conductive rod 4 into a radial circuit of the electrical connection ring 2. And compared with directly connecting the wire to the electrical connection ring 2, in the relatively small-sized electrical connection ring 2, the connection method of the conductive rod 4 is convenient for the operation of workers; Secondly, through the conductive elastic member 5 as the electrical connection medium between the conductive rod 4 and the electrical connection ring 2, the plug 1 can have better adaptability in special occasions such as the working occasion of drilling equipment. In the case of some vibrations of the equipment, the conductive elastic member 5 can adapt to a certain degree of vibration of the plug 1 without disconnecting the signal, which has further improvement for the rotary connector under special working conditions. Compared with the plug 1 that does not use the conductive elastic member 5, during vibration, the conductive part of the conductive rod 4 may be misaligned with the electrical connection ring 2, which may cause signal interruption, or in the case of hard connection, the conductive rod 4 and the electrical connection ring 2 may be damaged under long-term vibration, resulting in the plug 1 being unable to continue working. At this time, it is necessary to stop work and production for maintenance, which will cause relatively large economic losses.

[0032] Specifically, the plug 1 is cylindrical, and the axial direction in the above solution is the axial direction of the plug 1.

[0033] It can be understood that in one embodiment, the conductive elastic member 5 is sleeved on the side wall of the conductive rod 4, so that when the conductive rod 4 penetrates into the through hole 21 of the electrical connection ring 2, it will generate a radial extrusion on the conductive elastic member 5, causing the conductive elastic member 5 to generate a radial pre-pressure, so that during the drilling operation, even if there is relative movement between the conductive rod 4 and the through hole 21, it can ensure the continuous transmission of electrical signals and avoid signal interruption during the operation of the drilling equipment.

[0034] Further, as Figure 4 shown, a step 22 is provided in the through hole 21, a first shoulder 41 adapted to the step 22 of the through hole 21 is provided on the conductive rod 4, the conductive elastic member 5 is located between the step 22 and the first shoulder 41, and after the plug 1 is installed, the step 22 presses the conductive elastic member 5 against the first shoulder 41.

[0035] Adopting the foregoing technical solution, this structural design of pressing the conductive elastic member 5 against the first shoulder 41 by the step 22 can prevent the conductive elastic member 5 from being overly deformed, distorted or even disengaged from its original connection position due to insufficient restraint during the operation of the equipment (such as in the case of vibration, shaking, etc.), thereby extending the service life of the conductive elastic member 5, reducing the frequency of replacing the plug 1 components or performing maintenance due to the damage of the conductive elastic member 5, and also providing a certain installation position reference for the conductive rod 4 during the assembly process of the plug 1, improving the assembly efficiency and accuracy.

[0036] Preferably, the shoulder 41 is located at the end of the conductive rod 4, while the step 22 is located on one side of the through hole 21, so that when the shoulder 41 of the conductive rod 4 abuts against the step 22 of the through hole 21, the conductive rod 4 will not protrude from the through hole 21.

[0037] It can be understood that in another embodiment, the shoulder 41 is not located at the end of the conductive rod 4, but in the middle part, and the lengths of multiple conductive rods 4 can be made the same, while the position of the shoulder 41 varies with the position of the corresponding mating step. In this embodiment, the rod body of the conductive rod 4 can support other through holes, making the electrical connection ring 2 more stable.

[0038] Furthermore, the through holes 21 with steps 22 are axially staggered, and each conductive rod 4 extends to one end of the plug 1.

[0039] With the foregoing technical solution, the through holes 21 with steps 22 are axially staggered, avoiding axial interference between the conductive rods 4 and their corresponding connecting components, making the structure of the entire plug 1 more compact, facilitating the reduction of the overall size of the plug 1, and each conductive rod 4 extends to one end of the plug 1, making the connection between the external wire and the conductive rod 4 more convenient, facilitating the electrical connection between the external wire and the conductive rod 4 through welding or other means, and enabling the external wire to be electrically connected to the electrical connection ring 2.

[0040] Furthermore, A electrical connection rings 2 are sleeved on the plug 1, and each electrical connection ring 2 is provided with ≥A uniformly distributed through holes 21. One of the through holes 21 is a flat hole 23 with a step 22. The first shoulder 41 of the conductive rod 4 is adapted to the flat hole 23. The rod body of the conductive rod 4 passes through the through holes 21 of the remaining electrical connection rings 2 to one end of the plug 1, and one end of the conductive rod 4 passing through the electrical connection ring 2 is electrically connected to a first wire 6.

[0041] With the foregoing technical solution, multiple uniformly distributed through holes 21 are provided on each electrical connection ring 2, which means that the corresponding number of conductive rods 4 can be flexibly configured according to actual signal transmission requirements, thereby realizing the simultaneous transmission of different numbers and different types of signals, greatly enhancing the adaptability of the plug 1 to diverse application scenarios. Designing one of the through holes 21 as a flat hole 23 with a step 22 and making the first shoulder 41 of the conductive rod 4 adapted thereto, such a special shape matching design can accurately determine the position of the conductive rod 4 on the corresponding electrical connection ring 2, effectively preventing signal interruption caused by unnecessary axial displacement of the conductive rod 4 and ensuring the stability of the electrical connection between the conductive rod 4 and the first wire 6.

[0042] Specifically, A is greater than or equal to 2. The flat hole 23 means a non-circular hole, which can be a square hole, an elliptical hole or other non-circular holes.

[0043] Furthermore, the plug 1 further includes a housing 11 for connecting to a drilling device and a connector 12 for sleeving an electrical connection ring 2. The connector 12 is provided with a second shoulder 121 having a radial dimension larger than that of the electrical connection ring 2. A clamping portion 111 for clamping the second shoulder 121 of the electrical connection ring 2 is provided inside the housing 11. An abutting member 7 for pressing the second shoulder 121 against the clamping portion 111 is further provided inside the housing 11. The abutting member 7 is fixedly connected to the housing 11 by a screw 71.

[0044] With the foregoing technical solution, the clamping of the second shoulder 121 and the clamping portion 111 provides accurate positioning for the electrical connection ring 2 on the connector 12. The abutting member 7 further presses the second shoulder 121 tightly against the clamping portion 111. Coupled with the fact that the abutting member 7 is fastened to the housing 11 using a screw 71, the electrical connection ring 2 on the connector 12 and the connector of the housing 11 are relatively fixed axially. This stable fixing method can effectively resist various impact forces and vibration forces generated during the operation of the drilling device, prevent loosening, displacement, etc. of the electrical connection ring 2, ensure the integrity and stability of the conductive path, and guarantee that the signal transmission is not interfered.

[0045] Furthermore, a slot 122 is provided on one of the second shoulder 121 of the connector 12 or the clamping portion 111 inside the housing 11, and a clamping block 112 adapted to the slot 122 is provided on the other.

[0046] With the foregoing technical solution, through the cooperation of the slot 122 and the clamping block 112, the housing 11 and the connector 12 are relatively fixed circumferentially. This stable fixing method can effectively resist various impact forces and vibration forces generated during the operation of the drilling device, prevent loosening, displacement, etc. of the electrical connection ring 2, ensure the integrity and stability of the conductive path, and guarantee that the signal transmission is not interfered.

[0047] Furthermore, the abutting member 7 is of an annular structure and is fixedly connected to the housing 11 using a plurality of screws 71.

[0048] With the foregoing technical solution, the abutting member 7 is of an annular structure and can achieve an all-round abutting effect around the second shoulder 121 of the connector 12. When it is fixedly connected to the housing 11 by a plurality of screws 71, the plurality of screws 71 are evenly distributed on the annular structure, so that the abutting force can be evenly applied from the second shoulder 121 to the clamping portion 111 inside the housing 11. This uniform abutting force can ensure that the electrical connection ring 2 is stably and evenly fixed both axially and radially, avoiding situations such as tilting and displacement of the electrical connection ring 2 caused by uneven local stress, thereby ensuring the stable installation of the electrical connection ring 2 inside the plug 1, which is of great significance for maintaining a stable signal transmission path.

[0049] Further, each of the conductive rods 4 extends to an end close to the housing 11. A first wire 6 is welded to the end of the conductive rod 4. After the pressing member 7 presses the second shoulder 121 against the clamping portion 111, the welding joint of the first wire 6 is sealed with an insulating adhesive 8.

[0050] With the foregoing technical solution, the welding joint of the first wire 6 is sealed with the insulating adhesive 8, so that each first wire 6 is relatively fixed with respect to the housing 11 and the connector 12, avoiding the possibility of signal short - circuit, increasing the safety of electrical signal transmission, and blocking the entry of external dust into the welding joint, ensuring the normal operation of the circuit, avoiding safety accidents caused by electrical failures, and improving the safety of the plug 1 during use.

[0051] Further, an insulating ring 24 is provided in the through - hole 21, or an insulating coating is applied to the rod body of the conductive rod 4 to insulate the rod body of the conductive rod 4 from the remaining electrical connection rings 2.

[0052] With the foregoing technical solution, by using the insulating ring 24 or the insulating coating, the conductive rod 4 only makes electrical connection with the corresponding electrical connection ring 2 and remains insulated from the remaining electrical connection rings 2.

[0053] A rotary connector, as Figure 5 shown; including the above - mentioned plug 1 and socket 9, and further including the socket 9. The socket 9 includes a connection cavity 91 that axially extends and adapts to the plug 1. An electrical connection ring 92 that surrounds the connection cavity 91 for one week is fixedly provided on the side wall of the connection cavity 91, and the electrical connection ring 92 is made of a deformable material, so that the plug 1 and the socket 9 can be plugged and separated. The electrical connection ring 92 is electrically connected to a corresponding second wire 93. When the plug 1 is plugged into the socket 9, the electrical connection ring 2 abuts against the electrical connection ring 92 to form an electrical connection, so that the first wire 6 and the second wire are electrically connected.

[0054] With the foregoing technical solution, the electrical connection ring 92 is made of a deformable material. When the plug 1 is inserted into the socket 9, the abutment of the electrical connection ring 2 against the electrical connection ring 92 will cause the electrical connection ring 92 to deform. This deformation can make a tight fit between the electrical connection ring 2 and the electrical connection ring 92, thus ensuring good electrical contact. Since electrical connection can be made around the plug 1 and the socket 9 for one week, when the plug 1 and the socket 9 rotate relative to each other, the plug 1 and the socket 9 can maintain electrical connection, ensuring the stability and integrity of signal transmission. Moreover, whether the plug 1 and the socket 9 are directly inserted or rotatably inserted during plugging, electrical connection can be completed. The design of this structure enables the drilling equipment to complete electrical connection without aligning to a specific angle during connection, enhancing its applicability under complex working conditions.

[0055] Installation process: Take Figure 3Taking the seven-core plug 1 as an example, the electrical connection ring 2 is provided with seven evenly distributed through holes 21, one of the through holes 21 is set as a milled flat hole 23, and the electrical connection ring 2 further includes a central hole 25. As Figure 2 shown, the electrical connection ring 2 is sleeved on the screw 13 of the connector 12 through the central hole 25, and the conductive rod 4 with the conductive elastic member 5 is passed through the milled flat hole 23 and then passes through the connector 12, so that the first shoulder 41 of the conductive rod 4 abuts the conductive elastic member 5 against the step 22 of the milled flat hole 23. Then, the insulating member 3 is sleeved on the screw 13, and the remaining six electrical connection rings 2, conductive elastic members 5 and five insulating members 3 are sleeved in sequence. Finally, an end cover 14 is installed at the end. The edge of the end cover 14 is rounded, which can facilitate the subsequent entry of the plug 1 into the socket 9. And a countersunk head screw 26 is used to fix the end cover 14 on the screw 13. A dot sealing treatment can be performed at the joint of the countersunk head screw 26 and the screw 71. Subsequently, the seven first wires 6 are electrically connected and welded to the corresponding conductive rods 4. Then, the end of the screw 13 with the countersunk head screw 26 is inserted into the housing 11 from the side of the housing 11 away from the clamping portion 111 and passes through the housing 11 from the side close to the clamping portion 111. Then, the tightening member 7 is used to abut the second shoulder 121 of the connector 12 against the clamping portion 111 of the housing 11, and the clamping groove 122 and the clamping block 112 are used for clamping connection. The tightening member 7 and the housing 11 are relatively fixed with screws 71. Finally, an insulating glue 8 such as silicone rubber is used to seal the welding part of the first wire 6, and then a sealing and wire fixing glue 10 is poured until it is flush with the end face of the housing 11 to complete the installation.

[0056] Specifically, as Figure 5 shown, the plug 1 and the socket 9 are respectively installed at both ends of the drilling equipment by means of thread fitting. When the two ends of the drilling equipment are rotationally connected, the plug 1 rotates into the socket 9. When the two ends of the equipment are connected in place, the plug 1 and the socket 9 are also inserted in place at the same time. At this time, electrical signal transmission can be carried out. When the two ends of the drilling equipment are rotated and separated in place, the plug 1 also rotates out of the socket 9. At this time, the plug 1 and the socket 9 are in a disconnected state and cannot carry out electrical signal transmission, preparing for the next working cycle.

[0057] In addition to the above preferred embodiments, there are other implementation manners for this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection requested by this application.

Claims

1. A plug for a rotary connector, characterized in that: The plug is sleeved with a plurality of electrical connection rings arranged axially at intervals, an insulating member is provided between the axial surfaces of two adjacent electrical connection rings, an axially extending through hole is provided on the electrical connection ring, a conductive rod is correspondingly provided in the through hole, a conductive elastic member is provided between the conductive rod and the corresponding through hole, so that a stable electrical connection is formed among the electrical connection ring, the conductive elastic member and the conductive rod, and the conductive rod is insulated from the remaining electrical connection rings.

2. A plug for a rotary connector according to claim 1, characterized in that: A step is provided in the through hole, a first shoulder matched with the step of the through hole is provided on the conductive rod, the conductive elastic member is located between the step and the first shoulder, and after the plug is installed, the step presses the conductive elastic member onto the first shoulder.

3. A plug for a rotary connector according to claim 2, characterized in that: The through holes with steps are staggered in the axial direction, and each of the conductive rods extends to one end of the plug.

4. A plug for a rotary connector according to claim 3, characterized in that: The plug is provided with A electrical connection rings, each of which is provided with ≥A evenly distributed through holes, one of which is a flat hole with a step, the first shoulder of the conductive rod is adapted to the flat hole, the rod body of the conductive rod passes through the through holes of the remaining electrical connection rings to one end of the plug, and the end of the conductive rod passing through the electrical connection ring is electrically connected to the first wire.

5. A plug for a rotary connector according to claim 1, characterized in that: The plug also includes a shell for connecting to the drilling equipment and a connecting head for sleeved with an electrical connecting ring, the connecting head is provided with a second shoulder with a radial dimension larger than the electrical connecting ring, a clamping portion for clamping the second shoulder of the electrical connecting ring is provided in the shell, a fastening piece for clamping the second shoulder to the clamping piece is also provided in the shell, and the fastening piece is fastened to the shell by screws.

6. A plug for a rotary connector according to claim 5, characterized in that: One of the second shaft shoulder of the connector or the clamping portion in the housing is provided with a clamping groove, and the other is provided with a clamping block adapted to the clamping groove.

7. A plug for a rotary connector according to claim 5, characterized in that: The fastening member is an annular structure and is fastened to the shell by using a plurality of screws.

8. A plug for a rotary connector according to claim 5, characterized in that: Each of the conductive rods extends to one end close to the shell, and a first wire is welded to the end of the conductive rod. After the pressing member presses the second shaft shoulder to the clamping part, the welding position of the first wire is sealed with insulating glue.

9. A plug for a rotary connector according to claim 1, characterized in that: An insulating ring is arranged in the through hole, or an insulating coating is coated on the rod body of the conductive rod, so that the rod body of the conductive rod is insulated from the remaining electrical connection rings.

10. A rotary connector, comprising the plug according to claim 1, characterized in that: It also includes a socket, which includes an axially extending connecting cavity for an adapter plug, an electrical connecting ring surrounding the connecting cavity is fixedly provided on the side wall of the connecting cavity, and the electrical connecting ring is made of an easily deformable material so that the plug and the socket can be plugged in and out, the electrical connecting ring is electrically connected to a corresponding second wire, and when the plug and the socket are plugged in, the electrical connecting ring abuts the electrical connecting ring to form an electrical connection, so that the first wire and the second wire are electrically connected.

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