Split type conducting ring

Abstract

The invention relates to the technical field of conducting rings, in particular to a split type conducting ring which comprises an inner-layer fixing frame, an outer-layer fixing frame and a conducting fiber bundle, the conducting fiber bundle is located between the inner-layer fixing frame and the outer-layer fixing frame, the outer-layer fixing frame is installed on the inner-layer fixing frame, and the outer-layer fixing frame is installed on the outer-layer fixing frame. A fixing unit for fixing the conductive fiber bundle is arranged between the inner-layer fixing frame and the outer-layer fixing frame, the fixing unit comprises a shell for accommodating the conductive fiber bundle, an inner core for conducting current of the conductive fiber bundle to the outer-layer fixing frame and a reinforcing piece for reinforcing the conductive fiber bundle in the shell, and the inner core is fixedly connected in the shell. The conductive fiber bundle is fixedly connected with the inner core, a through hole is formed in the shell, and the reinforcing piece and the conductive fiber bundle are filled in the through hole. Through the arrangement of the reinforcing members, the friction force between the conductive fiber bundles and the shell is increased, the fixing degree of the conductive fiber bundles is enhanced, and the stability of the conductive performance of the conductive ring is improved.

Description

Technical Field

[0001] The present application relates to the technical field of conductive rings, and in particular to a split conductive ring. Background Art

[0002] Shaft voltage is the voltage generated between the two bearing ends of the motor or between the motor shaft and the bearings. The main causes of shaft voltage are asymmetric magnetic field of the generator, magnetization of the generator shaft, electrostatic charging, etc.

[0003] When a motor is running at variable frequency, the shaft voltage increases. This voltage is released by conducting current to the bearings. During this current release, the bearing races and ball surfaces are corroded, reducing the bearing's service life. To prevent this corrosion, conductive rings are installed on the motor bearings.

[0004] The existing conductive ring includes an inner fixing frame, an outer fixing frame and a conductive fiber bundle. The conductive fiber bundle is installed between the inner fixing frame and the outer fixing frame. The conductive fiber bundle is fixed inside the conductive ring with conductive glue, and the conductive fiber bundle is used to conduct the current on the bearing to the conductive ring. However, in actual use, the conductive fiber bundle conflicts with the bearing, and the motor bearing vibrates. The conductive fiber bundle will inevitably be deformed due to the bearing vibration. The conductive fiber bundle fixed by ordinary gluing is not strong enough, and the conductive fiber bundle often falls off, thereby affecting the conductive performance of the conductive ring.

[0005] Therefore, a new set of conductive rings is urgently needed to solve the above problems, thereby strengthening the fixation of the conductive fiber bundles and improving the stability of the conductive performance of the conductive rings. Summary of the Invention

[0006] In order to strengthen the fixation of the conductive fiber bundle and improve the stability of the conductive performance of the conductive ring, the present application provides a split conductive ring.

[0007] This application provides a split conductive ring, which adopts the following technical solution: A split conductive ring includes an inner fixing frame, an outer fixing frame and a conductive fiber bundle, wherein the conductive fiber bundle is located between the inner fixing frame and the outer fixing frame, and the outer fixing frame is installed on the inner fixing frame. A fixing unit for fixing the conductive fiber bundle is provided between the inner fixing frame and the outer fixing frame, and the fixing unit includes an outer shell for accommodating the conductive fiber bundle, an inner core for conducting the current of the conductive fiber bundle to the outer fixing frame, and a reinforcement for reinforcing the conductive fiber bundle in the outer shell, the inner core is fixedly connected in the outer shell, the conductive fiber bundle is fixedly connected to the inner core, a through hole is opened in the outer shell, and the reinforcement and the conductive fiber bundle are filled in the through hole.

[0008] By adopting the above technical solution, the inner core is fixed in the outer shell, and a through hole is provided in the outer shell. The conductive fiber bundle and the reinforcement are both fixed to the inner core, and the conductive fiber bundle and the reinforcement fill the through hole. By placing the reinforcement into the through hole, the gap inside the conductive fiber bundle is reduced, and the friction between the conductive fiber bundles is increased. At the same time, the conductive fiber bundle is squeezed and further contacts the inner side wall of the through hole, thereby increasing the friction between the conductive fiber bundle and the inner side wall of the through hole, reducing the conductive fiber bundle from falling off the outer shell, and at the same time, the reinforcement strengthens the strength of the conductive fiber bundle penetrating one end of the outer shell, so that the conductive fiber bundle is more firmly fixed in the outer shell, ensuring the stability of the conductive performance of the conductive ring.

[0009] Optionally, the fixing unit is wrapped between the outer fixing frame and the inner fixing frame, one end of the fixing unit contacts the outer side wall of the outer fixing frame, and the other end contacts the inner fixing frame.

[0010] By adopting the above technical solution, the fixing unit can be stably fixed in the conductive ring, and the fixing unit is further limited to ensure that the conductive fiber bundle can be stably fixed in the conductive ring, thereby ensuring smooth conductive work of the conductive ring.

[0011] Optionally, an elastic portion is integrally formed on the outer fixing frame, and the elastic portion elastically contacts the fixing unit.

[0012] Optionally, the elastic portion includes an elastic conductive sheet, the elastic conductive sheet elastically contacts the outer end surface of the inner core, and the inner end surface of the inner core is fixed to the reinforcement member.

[0013] By adopting the above technical solution, the setting of the elastic conductive sheet ensures that the current on the inner core can be stably transmitted to the elastic conductive sheet, and then transmitted to the outer fixed frame. The conductive ring sleeve is placed on the bearing, and the conductive fiber bundle contacts the bearing. The bearing vibrates as the motor works. The bearing vibration will cause the bearing to apply a force to the conductive fiber bundle in the radial direction, forcing the conductive fiber bundle to produce a displacement error toward the outside of the conductive ring. The elastic conductive sheet increases the inner core and contacts one end of the conductive fiber, which is equivalent to the elastic conductive sheet applying an elastic reaction force to the conductive fiber bundle. Due to the elastic function of the elastic conductive sheet, the hard contact between the conductive fiber bundle and the bearing is converted into flexible contact. The elastic conductive sheet can undergo a slight elastic deformation, ensuring the force balance of the conductive fiber bundle and achieving full contact between the conductive fiber bundle and the bearing, so as to realize the adaptability of the fixing unit to the radial deviation trend toward the outside of the conductive ring, thereby extending the service life of the internal parts of the conductive ring.

[0014] Optionally, a guiding slope is provided at the opening of the through hole to facilitate the conductive fiber bundle to penetrate into the through hole.

[0015] By adopting the above technical solution, a guiding bevel is provided at the opening of the through hole. When the conductive fiber bundle passes through the through hole, the guiding bevel guides the conductive fiber bundle into the through hole, making it easier for the conductive fiber bundle to pass into the through hole. At the same time, when the bearing vibration drives the conductive fiber bundle to bend, the strength of the conductive fiber bundle is enhanced by the reinforcement. The strength of the conductive fiber bundle in the through hole is greater, and the conductive fiber bundle bends from the opening of the through hole along the guiding bevel. The setting of the guiding bevel reduces the degree to which the conductive fiber bundle is worn by the outer shell.

[0016] Optionally, a clamping piece is provided on the inner fixing frame, and a clamping groove for clamping with the clamping piece is provided on the outer fixing frame.

[0017] By adopting the above technical solution and providing the clamping piece and the clamping groove, the inner fixing frame and the outer fixing frame can be disassembled and assembled, which facilitates the replacement of the fixing unit.

[0018] Optionally, a channel for accommodating the fixing unit is provided in the conductive ring, and a heat dissipation hole communicating with the channel is provided on the outer side wall of the outer fixing frame.

[0019] By adopting the above technical solution, by providing a channel and a heat dissipation hole connected to the channel, the inside of the conductive ring is connected to the outside world, the heat dissipation effect inside and outside the conductive ring is improved, and the stability of the overall performance of the conductive ring is further enhanced.

[0020] Optionally, the outer shell is made of insulating material, and the inner core and the elastic part are made of conductive material.

[0021] By adopting the above technical solution, the outer shell is set to an insulating material with high resistance to prevent current from passing through the outer shell. The inner core and the elastic part are made of conductive material to ensure that the current on the conductive fiber bundle is concentratedly conducted through the inner core to the elastic part.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The inner core is fixed in the outer shell, and a through-hole is provided in the outer shell. The conductive fiber bundle and the reinforcement are fixed to the inner core. The conductive fiber bundle and the reinforcement fill the through-hole. By placing the reinforcement in the through-hole, the gap inside the conductive fiber bundle is reduced, and the friction between the conductive fiber bundles is increased. At the same time, the conductive fiber bundle is squeezed and further contacts the inner side wall of the through-hole, thereby increasing the friction between the conductive fiber bundle and the inner side wall of the through-hole, reducing the conductive fiber bundle from falling off the outer shell. At the same time, the reinforcement strengthens the strength of the conductive fiber bundle penetrating one end of the outer shell, making the conductive fiber bundle more firmly fixed in the outer shell, ensuring the stability of the conductive performance of the conductive ring; 2. The setting of the elastic conductive sheet ensures that the current on the inner core can be stably transmitted to the elastic conductive sheet, and then to the outer fixed frame. The conductive ring is placed on the bearing, and the conductive fiber bundle contacts the bearing. The bearing vibrates as the motor works, which in turn causes the conductive fiber bundle to be subjected to a force. The elastic conductive sheet elastically contacts the inner core, and the elastic conductive sheet applies a reaction force to the conductive fiber bundle through the inner core. Due to the design of the elastic conductive sheet, the contact between the conductive fiber bundle and the bearing is converted to flexible contact, ensuring the force balance of the conductive fiber bundle and achieving full contact between the conductive fiber bundle and the bearing. This has a buffering effect on the entire fixed unit and the conductive fiber bundle, and extends the service life of the internal parts of the conductive ring; 3. By arranging a guiding bevel at the opening of the through hole, when the conductive fiber bundle passes through the through hole, the guiding bevel guides the conductive fiber bundle into the through hole, making it easier for the conductive fiber bundle to pass into the through hole. At the same time, when the bearing vibrates and drives the conductive fiber bundle to bend, the strength of the conductive fiber bundle is enhanced by the reinforcement, and the strength of the conductive fiber bundle in the through hole is greater. The conductive fiber bundle bends along the guiding bevel from the opening of the through hole. The setting of the guiding bevel reduces the degree of wear of the conductive fiber bundle by the outer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of an embodiment of the present application; Figure 2 This is a cross-sectional view of an embodiment of the present application, used to illustrate the interfering arrangement of the fixing unit with the outer fixing frame and the inner fixing frame; Figure 3 for Figure 2 The enlarged schematic diagram of part A in the middle is used to show the specific structure of the fixed unit.

[0024] Figure numerals: 1. conductive ring; 2. outer fixing frame; 3. inner fixing frame; 4. conductive fiber bundle; 5. snap-in component; 6. snap-in groove; 7. channel; 8. heat dissipation hole; 9. fixing unit; 10. outer shell; 11. inner core; 12. reinforcement component; 13. through hole; 14. elastic part; 15. elastic conductive sheet; 16. guide slope; 17. interference step. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 —3 Provide further details of this application.

[0026] Example: A split conductive ring, reference Figure 1The conductive ring 1 includes an outer fixing frame 2, an inner fixing frame 3 and a conductive fiber bundle 4. In this embodiment, the conductive fiber bundle 4 is made of carbon fiber. The outer fixing frame 2 is placed on the inner fixing frame 3. The outer fixing frame 2 is made of a conductive material. The conductive material is copper in this embodiment. The outer fixing frame 2 is pressed from copper to ensure that the current can be conducted to the outer fixing frame 2. The inner fixing frame 3 is made of an insulating material. In this embodiment, the insulating material is insulating plastic. The inner fixing frame 3 is injection-molded from insulating plastic. The insulating plastic can prevent the current from being conducted to the inner fixing frame 3. The conductive fiber bundles 4 are circumferentially arranged in the conductive ring 1. One end of the conductive fiber bundle 4 passes through the inner fixing frame 3 and extends toward the center of the conductive ring 1.

[0027] refer to Figure 1 and Figure 2 A clip 5 is integrally formed on the inner fixing frame 3. The clip 5 is a protrusion protruding outward from the outer surface of the inner fixing frame 3. The protrusion protrudes from the outer side of the inner fixing frame 3. A clip groove 6 is provided on the outer fixing frame 2 to engage with the clip 5. The outer fixing frame 2 is fixed to the inner fixing frame 3 by engaging with the clip. A channel 7 is formed between the outer fixing frame 2 and the inner fixing frame 3. The shape of the channel 7 is a ring shape. A heat dissipation hole 8 connected to the channel 7 is provided on the outer wall of the outer fixing frame 2. The heat dissipation holes 8 are distributed along the circumference of the outer fixing frame 2 and there are several of them. The heat dissipation holes 8 pass through the inner and outer side surfaces of the outer fixing frame 2. The arrangement of the channel 7 and the heat dissipation holes 8 enables the conductive ring 1 to form a connected air vent. The bearing vibration generates heat, which can be dissipated to the outside of the conductive ring 1 through the channel 7 and the heat dissipation holes 8.

[0028] refer to Figure 3 The fixing unit 9 is wrapped between the outer fixing frame 2 and the inner fixing frame 3. The fixing unit 9 is used to fix the conductive fiber bundle 4. One end of the fixing unit 9 is in contact with the outer wall of the outer fixing frame 2. The fixing unit 9 is close to the side of the inner fixing frame 3 and is transitioned to form an interference step 17. The fixing unit 9 is in contact with the inner fixing frame 3 through the interference step 17. The outer fixing frame 2 and the inner fixing frame 3 limit the position of the fixing unit 9.

[0029] refer to Figure 3 The fixing unit 9 includes an outer shell 10, an inner core 11 and a reinforcement 12. The inner core 11 and the reinforcement 12 are both made of conductive material. In this embodiment, copper is selected as the conductive material. The inner core 11 and the reinforcement 12 are pressed from copper. The reinforcement 12 is set as a copper sheet in this embodiment. The inner core 11 is fixed in the outer shell 10 by conductive glue. The outer shell 10 is made of insulating material. In this embodiment, insulating plastic is selected as the insulating material. The outer shell 10 is injection molded from insulating plastic. The conductive fiber bundle 4 and the reinforcement 12 are fixed to the end face of the inner core 11 by conductive glue. The conductive fiber bundle 4 can conduct the current on the bearing to the inner core 11 in a concentrated manner.

[0030] refer to Figure 3 A through hole 13 is provided on the shell 10, and the reinforcement 12 and the conductive fiber bundle 4 fill the through hole 13. The gap inside the conductive fiber bundle 4 is reduced and the friction force is increased. The conductive fiber bundle 4 further contacts the inner wall of the through hole 13, and the friction force between the conductive fiber bundle 4 and the inner wall of the through hole 13 is increased. The overall strength of the conductive fiber bundle 4 located in the through hole 13 is increased, and the side wall of the reinforcement 12 contacts the inner wall of the through hole 13, and the conductive fiber bundle 4 is squeezed to the maximum extent by the reinforcement 12.

[0031] refer to Figure 1 and Figure 3 The outer fixing frame 2 is integrally formed with an elastic portion 14, and the elastic portion 14 includes an elastic conductive sheet 15. The outer side surface of the outer fixing frame 2 is hollowed out to further enhance the heat dissipation effect. The elastic conductive sheet 15 is integrally formed at the hollow portion of the outer side surface of the outer fixing frame 2. The elastic conductive sheet 15 elastically conflicts with the outer end surface of the inner core 11. The current conducted from the conductive fiber bundle 4 to the inner core 11 can be conducted to the outer fixing frame 2 through the elastic conductive sheet 15. The bearing conflicts with the conductive fiber bundle 4, and the vibration of the bearing causes the bearing to exert a force on the conductive fiber bundle 4 in the radial direction. , forcing the conductive fiber bundle 4 to produce a displacement error toward the outside of the conductive ring 1, and the elastic conductive sheet 15 elastically contacts one end of the conductive fiber bundle 4 through the inner core 11, which is equivalent to the elastic conductive sheet 15 applying an elastic reaction force to the conductive fiber bundle 4. Because of the elastic function of the elastic conductive sheet 15, the hard contact between the conductive fiber bundle 4 and the bearing is converted into flexible contact. The elastic conductive sheet 15 can undergo a slight elastic deformation to achieve the adaptability of the fixing unit 9 to the radial deviation trend toward the outside of the conductive ring 1, thereby extending the service life of the internal parts of the conductive ring 1.

[0032] refer to Figure 3 A guide slope 16 is provided on the inner side wall of the through hole 13. The guide slope 16 is in the shape of a truncated cone and is arranged near the opening of the through hole 13. When the conductive fiber bundle 4 passes through the through hole 13, the guide slope 16 guides the conductive fiber bundle 4 into the through hole 13, making it easier for the conductive fiber bundle 4 to pass into the through hole 13. At the same time, when the bearing vibrates and drives the conductive fiber bundle 4 to bend, the strength of the conductive fiber bundle 4 is strengthened by the reinforcement 12. The strength of the conductive fiber bundle 4 located in the through hole 13 is greater, and the conductive fiber bundle 4 bends along the guide slope 16 from the opening of the through hole 13. The setting of the guide slope 16 reduces the degree to which the conductive fiber bundle 4 is worn by the outer shell 10.

[0033] The implementation principle of the embodiment of the present application is as follows: the conductive fiber bundle 4 is passed through the through hole 13 and glued to the inner end surface of the inner core 11, and then the reinforcement member 12 is passed through the through hole 13 and glued to the inner end surface of the inner core 11. The side wall of the reinforcement member 12 contacts the inner side wall of the through hole 13, the gap inside the conductive fiber bundle 4 is reduced, and the gap between the conductive fiber bundle 4 and the inner side wall of the through hole 13 is reduced. The fixed unit 9 after gluing is placed in the conductive ring 1 so that one end of the fixed unit 9 is in contact with the outer solid layer. The outer side wall of the fixed frame 2 is in conflict with the other end of the fixed frame 2, and the other end is in conflict with the inner fixing frame 3. The elastic part 14 on the outer fixing frame 2 is in conflict with the fixing unit 9. The outer fixing frame 2 is placed on the inner fixing frame 3 and is snap-fitted with the inner fixing frame 3. The bearing is in conflict with the conductive fiber bundle 4. The vibration of the bearing causes the conductive fiber bundle 4 to be subjected to an action force. The elastic part 14 applies a reaction force to the conductive fiber bundle 4 through the inner core 11. The vibration of the bearing generates heat, and the generated heat can be dissipated to the outside of the conductive ring 1 through the channel 7 and the heat dissipation hole 8.

[0034] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A split conductive ring, comprising an inner layer fixing frame (3), an outer layer fixing frame (2) and a conductive fiber bundle (4), wherein the conductive fiber bundle (4) is located between the inner layer fixing frame (3) and the outer layer fixing frame (2), and the outer layer fixing frame (2) is mounted on the inner layer fixing frame (3), characterized in that: A fixing unit (9) for fixing the conductive fiber bundle (4) is provided between the inner fixing frame (3) and the outer fixing frame (2), the fixing unit (9) comprising an outer shell (10) for accommodating the conductive fiber bundle (4), an inner core (11) for conducting the current of the conductive fiber bundle (4) to the outer fixing frame (2), and a reinforcing member (12) for reinforcing the conductive fiber bundle (4) in the outer shell (10), the inner core (11) being fixedly connected in the outer shell (10), the conductive fiber bundle (4) being fixedly connected to the inner core (11), the outer shell (10) being provided with a through hole (13), the reinforcing member (12) and the conductive fiber bundle (4) being filled in the through hole (13).

2. A split conductive ring according to claim 1, characterized in that: The fixing unit (9) is wrapped between the outer fixing frame (2) and the inner fixing frame (3); one end of the fixing unit (9) contacts the outer side wall of the outer fixing frame (2), and the other end contacts the inner fixing frame (3).

3. A split conductive ring according to claim 1, characterized in that: An elastic portion (14) is integrally formed on the outer layer fixing frame (2), and the elastic portion (14) elastically contacts the fixing unit (9).

4. A split conductive ring according to claim 3, characterized in that: The elastic part (14) comprises an elastic conductive sheet (15), the elastic conductive sheet (15) elastically abuts against the outer end surface of the inner core (11), and the inner end surface of the inner core (11) is fixed to the reinforcing member (12).

5. The split conductive ring according to claim 1, characterized in that: A guiding inclined surface (16) is provided at the opening of the through hole (13) to facilitate the conductive fiber bundle (4) to penetrate into the through hole (13).

6. A split conductive ring according to claim 1, characterized in that: The inner fixing frame (3) is provided with a clamping piece (5), and the outer fixing frame (2) is provided with a clamping groove (6) for clamping with the clamping piece (5).

7. The split conductive ring according to claim 1, characterized in that: The conductive ring (1) is provided with a channel (7) for accommodating a fixing unit (9), and the outer side wall of the outer fixing frame (2) is provided with a heat dissipation hole (8) connected to the channel (7).

8. The split conductive ring according to claim 3, characterized in that: The outer shell (10) is made of insulating material, and the inner core (11) and the elastic part (14) are made of conductive material.

Images