Conducting ring and motor

Abstract

The utility model provides a conducting ring and a motor, and belongs to the conducting ring technical field, the conducting ring comprises an annular piece, the annular piece is provided with a mounting hole and a riveting hole, the riveting hole and the mounting hole are aligned in the thickness direction of the annular piece, and the hole bottom of the riveting hole is provided with a wave-shaped indentation surface; in the corresponding mounting hole and riveting hole, a solid part between the wavy indentation surface and the hole wall of the mounting hole is set as a flow deformation part; one part of the conductive fiber bundle is arranged in the mounting hole, the other part of the conductive fiber bundle extends out of one port of the mounting hole, and the hole wall of the mounting hole tightly hoops the conductive fiber bundle so that the conductive fiber bundle and the mounting hole can be riveted. The conductive ring has the beneficial effects that the structural design of the conductive ring is very ingenious, the riveting hole can be fully extruded, and the wavy indentation surface can enable the flow deformation part to generate more reasonable and accurate deformation flow, so that the hole wall of the mounting hole completely hoops a conductive fiber bundle, and the service life of the conductive fiber bundle is prolonged. And the riveting strength and the conductivity between the conductive fiber bundle and the annular piece are improved.

Description

Technical Field

[0001] This utility model belongs to the field of conductive ring technology, and relates to a conductive ring and a motor. Background Technology

[0002] In motor systems powered by variable frequency drives (VFDs), the rapid switching of power conversion devices introduces high-order harmonic components into the power supply voltage. Under the influence of voltage pulse waveforms, electromagnetic induction occurs between the stator and rotor windings, causing changes in the shaft voltage through distributed parameters. This generates shaft voltage. When the oil film between the motor shaft and bearing breaks down, a circuit is formed, resulting in shaft current. Additionally, three-phase current asymmetry, magnetic reluctance imbalance, and static charge accumulation can also generate shaft current. Because the shaft current in a motor system is transient, it radiates high-intensity electromagnetic waves during these changes, severely impacting the system's electromagnetic compatibility. Furthermore, excessive shaft current can lead to bearing electrolytic corrosion, affecting the motor's lifespan.

[0003] Taking new energy vehicle motors as an example, as current flows through the bearings, electro-corrosion occurs on the surfaces of the bearing races and rolling elements, leading to a gradual decline in the vehicle's power performance. When the vehicle eventually becomes unable to move due to insufficient power, it means that the motor bearings have been severely damaged. Specifically, the grease turns a darker color, sometimes black, and pitting corrosion is visible on the bearing races and rolling elements. These particulate materials generated by electro-corrosion are sealed inside the bearing, further accelerating the wear process and significantly shortening its service life.

[0004] To address the problem caused by shaft current, existing technologies typically employ a conductive ring on the motor shaft. The conductive ring, a metal ring, is fitted around the outer circumference of the motor shaft, and a conductive brush, comprising conductive fibers, is fixed to its inner side. When the motor shaft rotates, the conductive fibers remain in contact with the shaft, and grounding is achieved through the conductive brush, thus dissipating the shaft current.

[0005] In the production process of conductive rings, the installation of conductive fibers is a key challenge in the manufacturing process. Currently, the industry commonly uses traditional riveting to connect the ring body and the conductive fibers. The principle of traditional riveting is to cause local shrinkage and deformation of the mounting hole through riveting, thereby connecting the conductive fiber to the mounting hole. However, this traditional design has some shortcomings: the ring cannot be fully compressed during riveting, so the contact between the hole wall and the conductive fiber is insufficient, and the two can only make partial contact, resulting in poor riveting strength and conductivity between the conductive fiber and the ring. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a conductive ring and a motor.

[0007] The objective of this utility model can be achieved through the following technical solution: a conductive ring, comprising:

[0008] An annular component is provided with mounting holes and riveting holes. The number of mounting holes and riveting holes are the same and they are arranged in a one-to-one correspondence. The mounting holes are arranged radially along the annular component, and the riveting holes are arranged along the thickness direction of the annular component. The riveting holes and the mounting holes are aligned in the thickness direction of the annular component. The opening of the riveting hole is located at one end face of the annular component, and the bottom of the riveting hole has a wavy indentation surface. Correspondingly, in the mounting hole and the riveting hole, the solid portion between the wavy indentation surface and the hole wall of the mounting hole is set as a flow deformation part.

[0009] The conductive fiber bundles are arranged in a one-to-one correspondence with the number of mounting holes. A portion of the conductive fiber bundle is disposed in the mounting hole, and another portion of the conductive fiber bundle extends out from one end of the mounting hole. The wall of the mounting hole clamps the conductive fiber bundles to rivet them together.

[0010] Preferably, the wavy indentation surface includes crests and troughs, wherein the number of one crest and the number of the other is at least two, and the crests and the troughs are arranged alternately.

[0011] Preferably, the number of wave crests is one, the number of wave troughs is two, and the wave crest is located between the two wave troughs.

[0012] Preferably, there is a height difference between the top position of the crest and the bottom position of the trough in the thickness direction of the annular part.

[0013] Preferably, the crest portion is configured as a boss-shaped structure.

[0014] Preferably, the crest portion is configured as an arc-shaped protrusion structure.

[0015] Preferably, the crest portion is configured as a pointed protrusion structure.

[0016] Preferably, the trough portion is configured as a planar structure.

[0017] Preferably, the trough portion is configured as an arc-shaped recessed structure.

[0018] Preferably, the crests and troughs are arranged alternately along the radial direction of the mounting hole.

[0019] Preferably, the crests and troughs are arranged alternately along the axial direction of the mounting hole.

[0020] Preferably, the axis of the crest portion and the axis of the mounting hole are aligned in the thickness direction of the annular member.

[0021] Preferably, the other end face of the annular member is provided with an annular groove.

[0022] Preferably, the midpoint of the annular groove in the width direction is aligned with the midpoint of the rivet hole in the thickness direction of the annular part.

[0023] Preferably, the mounting hole is configured as a through hole structure, with the two ends of the mounting hole located on the inner and outer circumferential surfaces of the annular component, respectively.

[0024] An electric motor includes the aforementioned conductive ring, and further includes a housing and a main shaft, with one of the annular element and the conductive fiber bundle connected to the housing and the other connected to the main shaft.

[0025] Preferably, the outer circumferential surface of the annular component is fixedly connected to the housing, and the conductive fiber bundle extends from the inner circumferential surface of the annular component and contacts the main shaft.

[0026] Preferably, the main shaft passes through the shaft hole of the annular member, and the annular member is circumferentially fixedly connected to the main shaft, and the conductive fiber bundle extends from the outer peripheral surface of the annular member and contacts the housing.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] 1. The conductive ring has a very ingenious structural design. The rivet hole can be fully squeezed, and the wavy indentation surface can make the flow deformation part produce more reasonable and precise deformation flow, so that the hole wall of the mounting hole is fully clamped to the conductive fiber bundle, improving the riveting strength and conductivity between the conductive fiber bundle and the ring part.

[0029] 2. By using a wave-shaped riveting method, the stress distribution of the flow deformation part is optimized, local overload is avoided, and the riveting uniformity is improved. This causes the hole wall of the mounting hole to be squeezed in stages, thereby making the hole wall of the mounting hole deform uniformly, and then fully tightening the conductive fiber bundle, improving the riveting strength and conductivity between the conductive fiber bundle and the ring part.

[0030] 3. The advantage of alternating crests and troughs is that the top center of the mounting hole contracts inward, filling the remaining gap after pre-tightening on both sides, so that the hole wall of the mounting hole forms a full circumferential wrapping effect of the conductive fiber bundle. This wave compression makes the conductive fiber bundle more dispersed and reduces the risk of local shearing. The mounting hole wall forms a surface-to-surface contact with the conductive fiber bundle through multi-directional deformation, thereby reducing the resistance between the conductive fiber bundle and the ring component.

[0031] 4. The height difference between the crest and trough plays a key role in the deformation process of the flow deformation section. The existence of the height difference allows the deformation amount and deformation sequence of the flow deformation section to be precisely controlled.

[0032] 5. The crimping hole and the annular groove are located on the radial sides of the mounting hole, respectively. The annular groove can act as a "buffer zone" to some extent. During the riveting process, material is allowed to flow into the annular groove, where slight elastic or plastic deformation occurs to absorb the deformation during riveting, thereby reducing the dimensional deformation of the riveted product in the radial, axial, and circumferential directions. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the annular component structure after combining Embodiment 1 and Embodiment 5 of this utility model.

[0034] Figure 2 This is a partial cross-sectional schematic diagram of the annular component after combining Embodiment 1 and Embodiment 5 of this utility model.

[0035] Figure 3 This is a schematic diagram of the wavy indentation surface after combining Embodiment 1 and Embodiment 5 of this utility model.

[0036] Figure 4 This is a schematic diagram of the annular groove of this utility model.

[0037] Figure 5 This is a schematic diagram showing the positions of the annular groove, mounting hole, and riveting hole of this utility model.

[0038] Figure 6 This is a schematic diagram of the conductive ring structure after combining Embodiments 2 and 4 of this utility model.

[0039] Figure 7 This is a partial cross-sectional schematic diagram of the conductive ring after combining Embodiments 2 and 4 of this utility model.

[0040] Figure 8 This is a schematic diagram of the wavy indentation surface after combining Embodiments 2 and 4 of this utility model.

[0041] Figure 9 This is a schematic diagram of the conductive ring structure after combining Embodiments 3 and 5 of this utility model.

[0042] Figure 10 This is a half-sectional schematic diagram of the conductive ring after combining Embodiments 3 and 5 of this utility model.

[0043] Figure 11 This is a schematic diagram of the wavy indentation surface after combining Embodiments 3 and 5 of this utility model.

[0044] Figure 12 This is a structural schematic diagram of Embodiment 8 of the present invention.

[0045] Figure 13 This is a structural schematic diagram of Embodiment Nine of this utility model.

[0046] In the figure, 100 is the annular part; 110 is the mounting hole; 120 is the riveting hole; 130 is the wavy indentation surface; 131 is the crest of the wave; 132 is the trough of the wave; 140 is the flow deformation part; 150 is the annular groove; 200 is the conductive fiber bundle; 300 is the housing; and 400 is the main shaft. Detailed Implementation

[0047] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0048] like Figures 1 to 11 As shown, a conductive ring includes: an annular member 100, which has mounting holes 110 and riveting holes 120. The number of mounting holes 110 and riveting holes 120 are the same and they are arranged in a one-to-one correspondence. The mounting holes 110 are arranged radially along the annular member 100, and the riveting holes 120 are arranged along the thickness direction of the annular member 100. The riveting holes 120 and the mounting holes 110 are aligned in the thickness direction of the annular member 100. The opening of the riveting hole 120 is located on one end face of the annular member 100, and the bottom of the riveting hole 120 has a wavy indentation. Surface 130; In the corresponding mounting hole 110 and riveting hole 120, the solid portion between the wavy indentation surface 130 and the hole wall of the mounting hole 110 is set as a flow deformation portion 140; Conductive fiber bundle 200, the number of conductive fiber bundles 200 is consistent with the number of mounting holes 110 and is set one-to-one, a part of the conductive fiber bundle 200 is set in the mounting hole 110, and another part of the conductive fiber bundle 200 extends out from one end of the mounting hole 110, and the hole wall of the mounting hole 110 clamps the conductive fiber bundle 200 so that the two are riveted.

[0049] The annular component 100 is a metal part with a shaft hole. The mounting hole 110 is used to mount and fix the conductive fiber bundle 200. The crimping hole 120 is located directly above the mounting hole 110 and is used for inserting a crimping tool. The bottom surface of the crimping hole 120 forms a wavy indentation surface 130 after crimping. The portion between the wavy indentation surface 130 and the wall of the mounting hole 110 is a flow deformation section 140. The flow deformation section 140 deforms under pressure and flows into the mounting hole 110, thereby tightening the wall of the mounting hole 110 around the conductive fiber bundle 200.

[0050] The wavy indentation surface 130 is formed by the head of the riveting tool pressing against the bottom surface of the riveting hole 120. The head of the riveting tool and the wavy indentation surface 130 complement each other, and the tool can compress the bottom surface of the riveting hole 120, causing the flow deformation section 140 to produce a wavy deformation. The advantage of this design is that the stress distribution of the flow deformation section 140 is optimized by the wavy riveting method, avoiding local overload and improving the uniformity of riveting. This allows the hole wall of the mounting hole 110 to be compressed in stages, thereby causing the hole wall of the mounting hole 110 to deform uniformly, and thus fully tightening the conductive fiber bundle 200, improving the riveting strength and conductivity between the conductive fiber bundle 200 and the annular part 100.

[0051] In addition, the wave structure disperses pressure, avoids excessive local deformation of the mounting hole 110, improves the uniformity of riveting, and ensures that the hole wall of the mounting hole 110 fully compresses the conductive fiber bundle 200, thus preventing the conductive fiber bundle 200 from breaking.

[0052] Specifically, the bottom surface of the riveting hole 120 can be a planar structure in its initial state. The head of the riveting tool is complementary to the wavy indentation surface 130. When the riveting tool presses the bottom surface of the hole, it first extrudes the trough 132 of the wavy indentation surface 130, causing the flow deformation section 140 to flow towards the mounting hole 110 in the area corresponding to the trough 132. This causes the upper two sides of the mounting hole 110 to shrink and deform inward under strong compression. As the riveting tool completely forms the wavy indentation surface 130 on the bottom surface of the hole, the riveting tool applies downward pressure to the crest 131 of the wavy indentation surface 130, causing the top of the mounting hole 110 to be subjected to a certain amount of compression and thus shrink and deform inward.

[0053] This method allows the flow deformation section 140 to produce a wavy deformation, thereby more precisely controlling the deformation of the mounting hole 110 wall. This ensures the mounting hole 110 wall is fully compressed and that the wall of the mounting hole 110 tightly grips the outer periphery of the conductive fiber bundle 200 in a face-to-face contact manner, thus improving the riveting strength and conductivity between the conductive fiber bundle 200 and the annular member 100. Furthermore, it prevents the conductive fiber bundle 200 from breaking.

[0054] It should be added here that, during the riveting process, since the riveting tool first forms the trough 132 of the wavy indentation surface 130 on the bottom surface of the hole, this means that the local part of the flow deformation part 140 (corresponding to the part of the trough 132) preferentially generates relatively strong deformation. As the riveting tool continues to press down, it applies pressure to the entire wavy indentation surface 130, thereby causing the flow deformation part 140 to flow towards the area where the mounting hole 110 is located, realizing the staged uniform deformation of the mounting hole 110.

[0055] It should be noted that in traditional designs, the riveting hole 120 is directly pressed using a flat-headed riveting tool. In this case, the bottom surface of the hole is still a flat plane, and the portion between the bottom surface of the hole and the mounting hole 110 flows as a whole towards the area where the mounting hole 110 is located. In this structure, since the distance between the bottom surface of the riveting hole 120 and the top of the mounting hole 110 is the shortest, the top of the mounting hole 110 will first undergo strong deformation. This riveting is actually insufficient, and the deformation amount and deformation location cannot be precisely controlled, causing the hole wall of the mounting hole 110 to twist and deform, so the conductive fiber bundle 200 cannot be well fixed.

[0056] In this product, the bottom surface of the riveting hole 120 is provided with a wavy indentation surface 130, which means that the hole wall of the mounting hole 110 is fully squeezed and the conductive fiber bundle 200 is fully tightened, ensuring the base area of ​​the hole wall of the mounting hole 110 and the conductive fiber bundle 200, thereby improving the riveting strength.

[0057] Based on the above embodiments, the wavy indentation surface 130 includes a crest portion 131 and a trough portion 132, wherein the number of one of the crest portions 131 and the number of the other is at least two, and the crest portions 131 and the trough portions 132 are arranged alternately.

[0058] In the initial stage of the riveting tool pressing down, the protruding part of the tool head corresponding to the trough 132 first contacts the bottom surface of the riveting hole 120, applying concentrated pressure and forming two concave troughs 132 on the bottom surface. At this time, the area of ​​the flow deformation part 140 corresponding to the trough 132 undergoes violent plastic flow, and the metal material is squeezed towards the mounting hole 110, causing the top two sides of the mounting hole 110 (corresponding to the trough positions) to contract rapidly. As the riveting tool continues to press down, the concave part of the tool head corresponding to the crest 131 is pressed into the bottom surface of the riveting hole 120. At this time, the crest area of ​​the flow deformation part 140 is subjected to uniform downward pressure, pushing the metal material to diffuse towards the top center area of ​​the mounting hole 110, causing the top center of the mounting hole 110 to contract inward, filling the remaining gap after pre-tightening on both sides.

[0059] The advantage of alternating crests 131 and troughs 132 is that the top center of the mounting hole 110 contracts inward, filling the remaining gap after pre-tightening on both sides, so that the hole wall of the mounting hole 110 forms a full circumferential wrapping effect of the conductive fiber bundle 200. This wave-shaped compression makes the conductive fiber bundle 200 more dispersed in force, reducing the risk of local shearing. The wall of the mounting hole 110 forms a surface-to-surface contact with the conductive fiber bundle 200 through multi-directional deformation, thereby reducing the resistance between the conductive fiber bundle 200 and the annular part 100.

[0060] Based on the above embodiment, the number of crests 131 is one, the number of troughs 132 is two, and the crest 131 is located between the two troughs 132.

[0061] The crest 131 is the upwardly convex portion of the wavy indentation surface 130, located at the center of the entire wave structure. The trough 132 is the downwardly concave portion of the wavy indentation surface 130, located on either side of the crest 131. This "single crest, double trough" structure is simple and symmetrical, easy to manufacture and control, and effectively achieves uniform stress distribution in the flow deformation section 140. Through the synergistic effect of the crest 131 and the trough 132, the flow deformation section 140 can gradually and uniformly flow towards the mounting hole 110 in different areas, avoiding problems such as local overload or uneven deformation.

[0062] Based on the above embodiment, there is a height difference between the top position of the crest portion 131 and the bottom position of the trough portion 132 in the thickness direction of the annular member 100.

[0063] The top of the crest 131 is located at the highest point of the bottom surface of the riveting hole 120, and the bottom of the trough 132 is located at the lowest point of the bottom surface of the riveting hole 120. This height difference is determined by the shape of the riveting tool, whose head has a complementary wave shape, forming different depths of crests and troughs during the extrusion process. The height difference between the crest 131 and the trough 132 plays a crucial role in the deformation process of the flow deformation section 140. The existence of this height difference allows for precise control of the deformation amount and sequence of the flow deformation section 140.

[0064] Example 1:

[0065] like Figures 1 to 3 As shown, the crest portion 131 is configured as a boss-shaped structure. In Embodiment 1, the top of the crest portion 131 is a horizontal plane.

[0066] Example 2:

[0067] like Figures 6 to 8 As shown, the crest portion 131 is configured as an arc-shaped protrusion. In Embodiment 2, the top end of the crest portion 131 is a continuous smooth arc surface.

[0068] Example 3:

[0069] like Figures 9 to 11 As shown, the crest portion 131 is configured as a pointed protrusion. In Embodiment 3, the crest tip is an acute-angled structure.

[0070] like Figures 1 to 11As shown, Embodiment 1, Embodiment 2, and Embodiment 3 respectively demonstrate three different structures of the crest portion 131. The three embodiments differ significantly only in the specific shape of the crest portion 131. This difference in the specific shape of the crest portion 131 will bring some differences to the material flow, thereby resulting in different riveting effects.

[0071] Example 4:

[0072] like Figures 6 to 8 As shown, the trough portion 132 is configured as a planar structure. In embodiment four, the trough portion 132 is a horizontal plane. The material flow characteristics resulting from this shape are: the planar pressure forces the metal material to flow slowly and uniformly towards the mounting hole 110, forming a wide stress band and suppressing excessive flow deformation of the material.

[0073] Example 5:

[0074] like Figures 1 to 5 , Figures 9 to 11 As shown, the trough portion 132 is configured as an arc-shaped recessed structure. In embodiment five, the trough portion 132 is a continuous smooth concave surface, specifically configured as a circular arc concave surface, an elliptical arc concave surface, or a concave curved surface, etc. The material flow characteristics brought about by this shape are: the arc-shaped recess forces the metal material to flow relatively violently towards the mounting hole 110, forming a narrower stress band, thereby forcing the hole wall of the mounting hole 110 to more precisely deform and contract.

[0075] like Figures 1 to 11 As shown, Embodiments 4 and 5 respectively demonstrate two different structures of the trough portion 132. The specific shape differences of these two trough portions 132 will bring about some differences in material flow, thus resulting in different riveting effects. It should also be noted that any of the crest portions 131 in Embodiments 1 to 3 can be combined with any of the trough portions 132 in Embodiments 4 and 5 to obtain the corresponding wavy indentation surface 130.

[0076] Example 6:

[0077] like Figures 1 to 8 As shown, the crest portion 131 and the trough portion 132 are arranged alternately along the radial direction of the mounting hole 110. This means that the crest portion 131 and the trough portion 132 extend axially along the mounting hole 110. When the hole wall of the mounting hole 110 contracts inward and deforms, the area where the flow deformation portion 140 deforms extends axially along the mounting hole 110. No shear force is generated acting on the conductive fiber bundle 200 in the radial direction. Therefore, when the mounting hole 110 clamps the conductive fiber bundle 200, the conductive fiber bundle 200 can resist the axial insertion and extraction force, preventing the conductive fiber bundle 200 from coming out of the hole, and the conductive fiber bundle 200 will not break.

[0078] Example 7:

[0079] like Figures 9 to 11 As shown, the crests 131 and troughs 132 are arranged alternately along the axial direction of the mounting hole 110. This means that the crests 131 and troughs 132 extend circumferentially or radially along the mounting hole 110. This wave-like design significantly enhances the clamping force of the mounting hole 110 on the conductive fiber bundle 200. When the conductive fiber bundle 200 is axially pulled, it needs to overcome multiple wave-like clamping points along the axial direction. In addition, this axial wave-like locking layout can avoid excessive concentration of radial shear force, ensuring that the conductive fiber bundle 200 will not break due to excessive shear force.

[0080] like Figure 3 , Figure 8 As shown, based on the above embodiment, the axis of the crest portion 131 and the axis of the mounting hole 110 are aligned in the thickness direction of the annular member 100.

[0081] The crest portion 131 is located directly above the shaft hole. The pressure acting on the crest portion 131 can be accurately transmitted to the hole wall position directly above the mounting hole 110 through the flow deformation portion 140. This coaxial pressure transmission can make the top of the mounting hole 110 uniformly compressed along the thickness direction, avoiding asymmetrical flow caused by axial offset, thereby ensuring that the hole wall of the mounting hole 110 can tightly clamp the conductive fiber bundle 200 in the entire circumference.

[0082] like Figure 4 , Figure 5 As shown, based on the above embodiment, an annular groove 150 is provided on the other end face of the annular member 100.

[0083] The annular groove 150 can increase the heat dissipation area. The cooling oil in the motor enters the annular groove 150 to cool the conductive ring. The cooling oil in the motor carries away the heat, preventing the conductive brush from overheating when the motor is running at high speed.

[0084] Based on the above embodiments, the midpoint of the annular groove 150 in the width direction is aligned with the midpoint of the rivet hole 120 in the thickness direction of the annular part 100.

[0085] The riveting hole 120 and the annular groove 150 are located on the radial sides of the mounting hole 110, respectively. The annular groove 150 can act as a "buffer zone" to a certain extent. During the riveting process, material is allowed to flow into the annular groove 150 and undergo slight elastic or plastic deformation through the annular groove 150 to absorb the deformation during riveting, thereby reducing the dimensional deformation of the product in the radial, axial and circumferential directions after riveting.

[0086] like Figures 1 to 11As shown, based on the above embodiment, the mounting hole 110 is configured as a through hole structure, with its two ends located on the inner and outer circumferential surfaces of the annular member 100, respectively. The end of the conductive fiber bundle 200 can extend out of either the inner or outer circumferential surface.

[0087] like Figures 1 to 13 As shown, based on the above embodiments, a motor includes a conductive ring, a housing 300 and a main shaft 400, and one of the annular member 100 and the conductive fiber bundle 200 is connected to the housing 300 and the other is connected to the main shaft 400.

[0088] The motor establishes a current path between the annular component 100 and the main shaft 400 or the housing 300 through the connection between the conductive ring, the housing 300 and the main shaft 400 by using the conductive fiber bundle 200, ensuring that the shaft current can be safely diverted, thereby protecting the main shaft 400 and the bearings.

[0089] Example 8:

[0090] like Figure 12 As shown, the outer circumferential surface of the annular component 100 is fixedly connected to the housing 300, and the conductive fiber bundle 200 extends from the inner circumferential surface of the annular component 100 and contacts the main shaft 400.

[0091] Example 9:

[0092] like Figure 13 As shown, the main shaft 400 passes through the shaft hole of the annular member 100, and the annular member 100 is circumferentially fixedly connected to the main shaft 400. The conductive fiber bundle 200 extends from the outer peripheral surface of the annular member 100 and contacts the housing 300.

[0093] like Figure 12 , Figure 13 As shown, Embodiments 8 and 9 respectively demonstrate two different installation methods of the conductive ring. Both methods establish a conductive component between the housing 300 and the spindle 400 by means of the conductive ring, thereby conducting away the shaft current on the spindle 400 and protecting the spindle 400 and the bearing.

[0094] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0095] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0096] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0097] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. An electrically conductive ring, characterized in that, include: An annular component (100) is provided with mounting holes (110) and riveting holes (120). The number of mounting holes (110) and riveting holes (120) is the same and they are arranged in a one-to-one correspondence. The mounting holes (110) are arranged radially along the annular component (100), and the riveting holes (120) are arranged along the thickness direction of the annular component (100). The riveting holes (120) and the mounting holes (110) are aligned in the thickness direction of the annular component (100). The opening of the riveting hole (120) is located at one end face of the annular component (100), and the bottom of the riveting hole (120) has a wavy indentation surface (130). In the corresponding mounting holes (110) and riveting holes (120), the solid portion between the wavy indentation surface (130) and the hole wall of the mounting hole (110) is set as a flow deformation part (140). A conductive fiber bundle (200) is provided, the number of which is consistent with the number of mounting holes (110) and is arranged in a one-to-one correspondence. A portion of the conductive fiber bundle (200) is disposed in the mounting hole (110), and another portion of the conductive fiber bundle (200) extends out from one end of the mounting hole (110). The hole wall of the mounting hole (110) clamps the conductive fiber bundle (200) to rivet the two together.

2. An electrically conductive ring as claimed in claim 1, characterized in that: The wavy indentation surface (130) includes crests (131) and troughs (132), wherein the number of one crest (131) and the number of the other trough (132) is at least one and the number of the other is at least two, and the crests (131) and the troughs (132) are arranged alternately.

3. An electrically conductive ring as claimed in claim 2, characterized in that: The number of crests (131) is one, the number of troughs (132) is two, and the crest (131) is located between the two troughs (132).

4. An electrically conductive ring as claimed in claim 2 or 3, characterized in that: There is a height difference between the top position of the crest (131) and the bottom position of the trough (132) in the thickness direction of the annular part (100).

5. An electrically conductive ring as claimed in claim 4, wherein: The crest portion (131) is configured as a boss-shaped structure.

6. An electrically conductive ring as claimed in claim 4, characterized in that: The crest portion (131) is configured as an arc-shaped protrusion structure.

7. An electrically conductive ring as claimed in claim 4, characterized in that: The crest portion (131) is configured as a pointed protrusion structure.

8. An electrically conductive ring as claimed in claim 4, characterized in that: The trough section (132) is configured as a planar structure.

9. An electrically conductive ring as claimed in claim 4, characterized in that: The trough portion (132) is configured as an arc-shaped concave structure.

10. An electrically conductive ring as claimed in claim 2 or 3, characterized in that: The crest portion (131) and the trough portion (132) are arranged alternately along the radial direction of the mounting hole (110).

11. An electrically conductive ring as claimed in claim 2 or 3, characterized in that: The crest portion (131) and the trough portion (132) are arranged alternately along the axial direction of the mounting hole (110).

12. An electrically conductive ring as claimed in claim 11, characterized in that: The axis of the crest portion (131) and the axis of the mounting hole (110) are aligned in the thickness direction of the annular part (100).

13. An electrically conductive ring as claimed in claim 1, characterized in that: The other end face of the annular member (100) is provided with an annular groove (150).

14. An electrically conductive ring as claimed in claim 13, wherein: The midpoint of the annular groove (150) in the width direction is aligned with the midpoint of the rivet hole (120) in the thickness direction of the annular part (100).

15. An electrically conductive ring as claimed in claim 1, wherein: The mounting hole (110) is configured as a through hole structure, and the two ends of the mounting hole (110) are located on the inner and outer circumferential surfaces of the annular part (100), respectively.

16. An electric machine characterized by The device includes a conductive ring as described in any one of claims 1 to 15, and further includes a housing (300) and a main shaft (400), with one of the annular element (100) and the conductive fiber bundle (200) connected to the housing (300) and the other connected to the main shaft (400).

17. An electric machine as claimed in claim 16, characterised in that: The outer peripheral surface of the annular component (100) is fixedly connected to the housing (300), and the conductive fiber bundle (200) extends from the inner peripheral surface of the annular component (100) and contacts the main shaft (400).

18. An electric machine as recited in claim 16, wherein: The main shaft (400) passes through the shaft hole of the annular member (100), and the annular member (100) is circumferentially fixedly connected to the main shaft (400). The conductive fiber bundle (200) extends from the outer peripheral surface of the annular member (100) and contacts the housing (300).

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