IP protection conductive slip ring suitable for consumer appliances

Abstract

The invention discloses an IP protection conductive slip ring suitable for consumer appliances. The IP protection conductive slip ring comprises a rotor assembly and a stator assembly. The rotor assembly comprises a conducting ring, a multi-core flexible wire, an SR net tail structure, a first conducting ring, a second conducting ring and an O-shaped ring. The stator assembly comprises a shell, a brush carrier, an electric brush piece, a PCB and an electric brush. The rotor assembly is provided with a thick step area and a thin step area, the first conducting ring is arranged in the thick step area and used for transmitting large current, and the second conducting ring is arranged in the thin step area and used for transmitting signals and / or small current, so that interference of the large current on signal transmission is reduced, and injection molding concentricity is improved. The matching position of the SR net tail structure and the housing is provided with an O-shaped ring for sealing, and the wire outlet of the stator assembly is provided with a sealing glue layer, thereby improving the waterproof and dustproof performances. The conductive slip ring has the advantages of being good in protection performance, strong in anti-interference capability, stable in rotation conduction and suitable for the field of consumer appliances.

Description

Technical Field

[0001] This invention relates to the field of consumer electronics, and more specifically to an IP-protected conductive slip ring suitable for consumer electronics. Background Technology

[0002] A slip ring is an electrical connection component used to achieve continuous transmission of electrical energy, control signals, or data signals between relatively rotating parts. It is widely used in equipment that requires maintaining an electrical connection while rotating. As consumer electronics products continue to evolve towards intelligence, multi-functionality, miniaturization, and high reliability, more and more consumer appliances are incorporating rotatable structures. Examples include cleaning appliances, beauty and personal care appliances, small kitchen appliances, and smart home terminals with rotating heads, swing mechanisms, flipping mechanisms, or continuous rotation mechanisms. In these products, the slip ring not only needs to establish power supply and signal transmission paths but also needs to meet the comprehensive requirements of size, stability, protection, and transmission quality during the long-term operation of consumer appliances.

[0003] Existing conductive slip rings for consumer appliances are mostly designed with basic conductive connection functionality in mind. They typically consist of a rotor and a stator, with a conductive ring on the rotor and brushes or elastic conductive elements on the stator that contact the conductive ring to form a continuous conductive path during relative rotation. While this structure can meet the basic requirements for conductive conduction during rotation to some extent, it still has several shortcomings when practically applied in the consumer appliance field.

[0004] Firstly, existing conductive slip rings generally have weak protective performance. Especially in consumer electronics, conductive slip rings often face complex operating environments, such as humid, dusty, moisture-laden, and cleaning liquid splashes. If the rotor outlet, SR mesh tail area, and stator outlet of the conductive slip ring lack effective sealing protection, moisture, dust, or impurities can easily enter the slip ring through these weak points. This can lead to moisture, oxidation, dust accumulation, or even short circuits in critical components such as the conductive ring, brushes, brush plates, or PCB board, affecting the overall operational stability of the device and potentially causing malfunctions in the consumer electronics. Currently, some conductive slip ring products lack a dedicated sealing structure at the rotor SR mesh tail and do not perform overall sealing at the stator outlet, making it difficult for these slip rings to meet the actual IP protection requirements of consumer electronics, especially the commonly used IP54 protection standard.

[0005] Secondly, existing conductive slip rings lack sufficient anti-interference capability when transmitting different types of current and signals. Consumer electronics often contain high-current power supply circuits, low-current control circuits, and various signal transmission circuits, such as sensor signals, control signals, or communication signals. Some existing conductive slip rings typically use a one-piece injection-molded structure with a uniform diameter, and the conductive rings are concentrated along the same diameter area, without proper layering or isolation between high-current circuits and signal circuits. As a result, during actual operation, the high-current path easily generates electromagnetic interference to the signal path, leading to decreased signal transmission stability and even problems such as bit errors, distortion, and fluctuations, making it difficult to meet the increasingly high requirements of control precision and signal transmission quality in current consumer electronics.

[0006] Thirdly, existing conductive slip ring rotors still face challenges in ensuring injection molding precision and concentricity during manufacturing. Since conductive slip rings in consumer electronics typically require compact structures, small dimensions, and a large number of passages, shrinkage and deformation can easily occur during injection molding if the rotor uses a long, uniform diameter rubber-coated structure, thus affecting the overall concentricity of the rotor. Insufficient rotor concentricity can lead to unstable contact between the conductive ring and brushes during assembly and rotation with the stator, increasing localized wear and contact resistance fluctuations. This not only affects conductivity and signal transmission performance but also reduces the slip ring's lifespan and the overall reliability of the device.

[0007] Furthermore, existing conductive slip rings for consumer electronics typically lack specialized optimization for different application paths in terms of internal structure integration. Especially in scenarios where high-current circuits coexist with low-current and signal circuits, they are often simply arranged using conventional methods without systematic design from aspects such as rotor structure level, conductive ring layout, and stator contact structure configuration. Therefore, it is difficult to balance multiple technical indicators such as protection performance, anti-interference performance, assembly reliability, and manufacturing precision. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides an IP protection conductive slip ring suitable for consumer electronics, which effectively overcomes the shortcomings of existing technologies.

[0009] The present invention is achieved through the following technical solution: an IP protection conductive slip ring suitable for consumer electrical appliances, comprising a rotor assembly and a stator assembly that is assembled in conjunction with the rotor assembly; The rotor assembly includes a conductive ring arranged along the axial direction, a multi-core flexible wire, and an SR mesh tail structure, wherein each core of the multi-core flexible wire is electrically connected to the corresponding conductive ring; The stator assembly includes a housing, a brush holder installed in the housing, multiple sets of brush plates installed on the brush holder, a PCB board, and brushes installed on the PCB board. The brush plates and brushes are in sliding contact with conductive rings at corresponding positions to form a conductive path between the rotor assembly and the stator assembly. The rotor assembly also has a coarse step region and a fine step region formed sequentially along the axial direction. A first conductive ring carrying large current transmission is disposed in the coarse step region, and a second conductive ring carrying signal transmission and / or small current transmission is disposed in the fine step region. This step-like layered structure reduces the interference of large current on signal transmission and improves the injection molding concentricity of the rotor assembly.

[0010] As a preferred technical solution, the multiple sets of brush plates are in conductive contact with the first conductive ring, and the brushes are in conductive contact with the second conductive ring.

[0011] As a preferred technical solution, when the rotor assembly is assembled with the housing, a sealing element is also provided. The sealing element is located at the mating part between the SR mesh tail structure and the housing to seal and protect the mating part.

[0012] As a preferred technical solution, the sealing element is an O-ring, which is sleeved on the outer periphery of the SR mesh tail structure and forms a radial sealing fit with the inner wall of the housing or the mating hole wall.

[0013] As a preferred technical solution, a sealing layer is provided at the outlet of the stator assembly to completely seal the outlet area of ​​the stator conductor.

[0014] As a preferred technical solution, the surface of the O-ring is coated with waterproof grease to improve the waterproof and dustproof sealing performance of the SR mesh tail structure and the assembly part of the shell.

[0015] As a preferred technical solution, the rotor assembly further includes a first bearing and a second bearing, both of which are sleeved on the outer periphery of the rotor assembly and installed in conjunction with the brush holder.

[0016] As a preferred technical solution, the brush holder end face is provided with multiple brush holder female buckles, and the housing is provided with multiple housing male buckles. During installation, the housing male buckles are snapped into the brush holder female buckles and rotated to complete the installation.

[0017] As a preferred technical solution, an insulator is provided in the middle of the first conductive ring, and the brush plates are configured in two sets, which are respectively arranged on both sides of the insulator.

[0018] As a preferred technical solution, the brush plate is C-shaped, with multiple brushes arranged side by side on both sides.

[0019] The beneficial effects of the present invention are as follows: The present invention provides an IP protection conductive slip ring suitable for consumer appliances. By optimizing the rotor assembly and stator assembly in a targeted manner, the conductive slip ring can not only meet the basic requirements of rotating conduction and signal transmission in consumer appliances, but also take into account protection performance, anti-interference performance and structural stability. Compared with the prior art, it has a significant improvement in comprehensive performance.

[0020] In this invention, the rotor assembly is provided with an SR mesh tail structure, and a sealing element is provided at the mating part of the SR mesh tail structure and the housing. O-rings are preferably used for circumferential sealing, and waterproof grease can be applied to the surface of the O-rings to form a relatively reliable seal against the assembly gap between the rotor assembly and the housing. Simultaneously, a sealing layer is provided at the stator assembly's wire outlet to provide overall sealing of the stator wire outlet area. This dual protection design of rotor-end sealing and stator-end sealing effectively prevents external moisture, dust, and impurities from entering the conductive slip ring, significantly improving the slip ring's protective capabilities in humid, dusty, or complex household environments. This makes it more suitable for application in consumer electronics and helps achieve higher waterproof and dustproof ratings.

[0021] In this invention, the rotor assembly adopts a stepped structure with coarse and fine step regions formed sequentially along the axial direction. The first conductive ring carrying high current transmission is arranged in the coarse step region, and the second conductive ring carrying signal transmission and / or low current transmission is arranged in the fine step region. This layered arrangement achieves relative isolation between high current paths and signal / low current paths at the structural level, thereby reducing interference to signal transmission during high current transmission, improving the stability and accuracy of signal transmission, and better adapting to the application requirements of multiple power supply circuits, control circuits, and signal circuits coexisting in consumer electronics.

[0022] In this invention, because the rotor assembly adopts a stepped segmented structure instead of a traditional one-piece injection-molded structure of the same diameter, it can effectively reduce problems such as shrinkage and deformation caused by the long overall length and uniform cross-section during the rotor injection molding process. This helps to improve the injection molding quality and overall concentricity of the rotor assembly. Improved rotor concentricity allows for more stable contact between the conductive ring and the brush plates / brushes during rotation, reducing localized wear, poor contact, and conduction fluctuations, thereby further enhancing the reliability and service life of the conductive slip ring.

[0023] In this invention, the first and second conductive rings are respectively coupled with conductive structures of different contact types. Multiple sets of brushes make conductive contact with the first conductive ring, and the brushes make conductive contact with the second conductive ring. This allows for more targeted conductive contact configurations based on the usage requirements of different pathways. In particular, using multiple sets of brushes for contact in high-current circuits helps improve current-carrying capacity and contact stability; while using brushes for contact in signal or low-current circuits helps ensure transmission sensitivity and contact accuracy, thus enabling the entire conductive slip ring to maintain good electrical connection performance under various operating conditions.

[0024] Furthermore, the brush holder and the housing in this invention adopt a male and female snap-fit ​​and rotating installation structure, which is convenient to assemble and reliable to connect, and helps to improve the assembly efficiency and structural stability of the product. At the same time, the first bearing and the second bearing are respectively set on the outer periphery of the rotor assembly and installed in conjunction with the brush holder, which can form a more stable rotational support for the rotor assembly, further improve the rotational smoothness, reduce operating vibration and sway, and also play a positive role in ensuring the stability of conductive contact. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rotor assembly of the present invention; Figure 3 This is a schematic diagram of the stator assembly of the present invention; Figure 4 This is a schematic cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the structure at the position of the brush holder female buckle of the present invention; Figure 6 This is a schematic diagram of the structure at the male buckle position of the housing of the present invention; Figure 7 This is a schematic diagram of the structure of the brush plate of the present invention; Explanation of reference numerals in the attached figures: 1. Rotor assembly; 2. Stator assembly; 3. SR mesh tail structure; 9. Housing; 10. Brush holder; 11. Brush blades; 12. PCB board; 13. Brush; 6. First conductive ring; 8. Second conductive ring; 4. O-ring; 5. First bearing; 15. Second bearing; 16. Brush holder female thread; 17. Housing male thread; 7. Insulator. Detailed Implementation

[0027] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0028] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0029] like Figures 1-7 As shown, this invention provides an IP protection conductive slip ring suitable for consumer appliances, comprising a rotor assembly 1 and a stator assembly 2 that are assembled together. The rotor assembly 1 and the stator assembly 2 together constitute the main structure of the slip ring for achieving stable transmission of electrical energy, control signals, and / or data signals in a relative rotational state. The conductive slip ring in this embodiment is mainly applied in the field of consumer appliances, and is particularly suitable for equipment scenarios that simultaneously require rotational movement, power supply circuits and signal circuits, and certain waterproof and dustproof requirements. Through targeted design of the structures of the rotor assembly 1 and the stator assembly 2, this conductive slip ring ensures conductive stability while also taking into account protective performance, anti-interference performance, and assembly reliability.

[0030] The rotor assembly 1 is the rotating conductive part of the slip ring, and the stator assembly 2 is the stationary conductive part corresponding to the rotor assembly 1. The rotor assembly 1 is assembled inside the stator assembly 2 and can rotate relative to the stator assembly 2 around its axis, thereby maintaining a continuous conductive connection during rotation. The rotor assembly 1 extends axially as a whole, with one end used to connect to an external rotating component, and the other end leading out a multi-core flexible wire through the SR mesh tail structure 3. The stator assembly 2 is mounted on the fixed end, with its exterior supported and protected by the housing 9. Inside, it houses components such as a brush holder 10, brush plates 11, a PCB board 12, and brushes 13 to achieve a sliding conductive fit with the rotor assembly 1.

[0031] Specifically, the rotor assembly 1 includes conductive rings spaced apart along the axial direction, multi-core flexible wires, an SR mesh tail structure 3, a first conductive ring 6, an insulator 7, a second conductive ring 8, an O-ring 4, a first bearing 5, and a second bearing 15. The conductive rings are key conductive components forming the rotating conductive path. In this embodiment, depending on the transmission function, the conductive rings are at least divided into a first conductive ring 6 for high-current transmission and a second conductive ring 8 for signal transmission and / or low-current transmission. The multi-core flexible wires are used to electrically connect to each conductive ring and provide a conductive path to the external circuit. The SR mesh tail structure 3 is located at the outlet end of the rotor assembly 1 and is used to cover, organize, and protect the outlet portion of the multi-core flexible wires, preventing excessive bending, loosening, or damage at the outlet transition points during rotation. It also provides a foundation for subsequent sealing and protection installation.

[0032] In this embodiment, each core of the multi-core flexible wire is connected to its corresponding conductive ring, preferably by welding to form a reliable electrical connection. After each core is connected to its corresponding conductive ring, it can be further encapsulated with the conductive ring through an injection molding process to form the overall structure of the rotor assembly 1. That is, after the first conductive ring 6 and the second conductive ring 8 are pre-assembled and connected to the multi-core flexible wire, they are encapsulated and isolated by insulating injection molding material, thereby forming a reliable insulating structure between adjacent conductive rings, and simultaneously forming a shaft-shaped structure with good overall integrity for the rotor assembly 1. The insulator 7 is formed between the first conductive ring 6 and the adjacent conductive structure to achieve insulating isolation between adjacent conductive areas and improve the structural stability of the entire rotor assembly 1.

[0033] Furthermore, in this embodiment, the rotor assembly 1 is sequentially formed with a coarse step region and a fine step region along the axial direction. A first conductive ring 6 is disposed in the coarse step region, and a second conductive ring 8 is disposed in the fine step region. That is, the first conductive ring 6, which carries high current transmission, is arranged in the relatively large-diameter coarse step region, while the second conductive ring 8, which carries signal transmission and / or low current transmission, is arranged in the relatively small-diameter fine step region. This stepped, layered structure spatially separates the high-current path from the signal and low-current paths. On the one hand, this reduces interference to the signal transmission path during high current transmission, improving signal transmission stability. On the other hand, it also reduces shrinkage and deformation problems that are common in traditional one-piece injection molded structures of the same diameter during the relatively long injection molding process of the rotor assembly 1. This improves the overall injection molding concentricity of the rotor assembly 1, resulting in smoother subsequent rotation.

[0034] The first conductive ring 6 is preferably configured as a ring-shaped conductive structure suitable for carrying a large current, and its number can be set to one or more according to the requirements of the high-current circuit. In this embodiment, an insulator 7 is provided in the middle of the first conductive ring 6, which insulates and isolates the corresponding area of ​​the first conductive ring 6, so as to form a more stable and clear conductive partition with the corresponding contact structure on the stator side. The second conductive ring 8 is preferably configured as one or more, used for transmitting control signals, detection signals, communication signals or auxiliary small currents. Since the second conductive ring 8 is located in the fine step area, it forms a certain degree of hierarchical difference with the first conductive ring 6 in both the axial and radial directions, thereby facilitating the functional separation of different paths in the structure.

[0035] The SR tail structure 3, as an important component in this embodiment, is located at the tail end of the rotor assembly 1, and an O-ring 4 is fitted around its outer periphery. The O-ring 4, acting as a seal, is installed on the outer periphery of the SR tail structure 3 and forms a radial sealing fit with the inner wall or mating hole wall of the housing 9 when the rotor assembly 1 is installed into the housing 9. In other words, when the rotor assembly 1 is inserted into the corresponding mounting position of the housing 9, the O-ring 4 is pressed tightly within the annular mating area between the SR tail structure 3 and the housing 9, thereby sealing any assembly gaps that may exist in this area and preventing external moisture, dust, or impurities from entering the conductive slip ring from this area. To further improve the sealing effect, the surface of the O-ring 4 can also be coated with waterproof grease. The waterproof grease forms an additional sealing and lubricating layer between the O-ring 4 and the housing 9 contact interface, which not only improves waterproof and dustproof sealing performance but also reduces assembly friction, improves assembly smoothness, and reduces the risk of damage to the O-ring 4 during assembly.

[0036] To ensure stable rotation of the rotor assembly 1 within the housing 9, in this embodiment, the first bearing 5 and the second bearing 15 are respectively fitted onto the outer periphery of the rotor assembly 1 and are installed in conjunction with the brush holder 10. Preferably, the first bearing 5 is positioned near one end of the rotor assembly 1, and the second bearing 15 is positioned at the other end of the rotor assembly 1, forming a support on both axial sides of the rotor assembly 1. The spaced support of the two bearings effectively limits the radial wobble and axial displacement of the rotor assembly 1 during rotation, maintaining good coaxiality and operational stability within the brush holder 10. This ensures a stable contact state between the first conductive ring 6, the second conductive ring 8, and the stator-side contact components, reducing conductive fluctuations and abnormal wear.

[0037] The stator assembly 2 is installed within the housing 9, which provides installation space, structural support, and external protection for both the stator assembly 2 and the rotor assembly 1. The housing 9 can be made of metal or high-strength engineering plastic, and its interior forms mounting cavities to accommodate the brush holder 10, the PCB board 12, and the rotor assembly 1. The brush holder 10, installed inside the housing 9, primarily supports and positions multiple sets of brushes 11, ensuring each set of brushes 11 accurately aligns with the position of the first conductive ring 6. The PCB board 12 is installed inside the housing 9 and mates with the brush holder 10. Brushes 13 are mounted on the PCB board 12 to form sliding conductive contact with the second conductive ring 8. By arranging the brushes 11 and 13 on different carriers, different contact forms can be selected for different functional circuits, thereby improving overall conductivity compatibility.

[0038] In this embodiment, multiple sets of brush plates 11 are in conductive contact with the first conductive ring 6, and brushes 13 are in conductive contact with the second conductive ring 8. Specifically, the brush plates 11 are preferably used for contacting high-current circuits, and therefore multiple sets are provided to increase the contact area and current carrying capacity. The brushes 13 are preferably used for signal and / or low-current circuit contacts, and can be more easily connected to external control circuits after being mounted on the PCB board 12. Both the brush plates 11 and the brushes 13 are in sliding contact with the conductive rings at corresponding positions inside the housing 9 to continuously form a conductive path between the rotor assembly 1 and the stator assembly 2 when the rotor assembly 1 rotates.

[0039] In this design, an insulator 7 is disposed in the middle of the first conductive ring 6, and two sets of brushes 11 are arranged, one on each side of the insulator 7. This arrangement allows the two sets of brushes 11 to contact the conductive areas on either side of the first conductive ring 6, thereby improving the uniformity and stability of the contact and enhancing the current-carrying reliability of the high-current path. Because the insulator 7 is located in the middle, unwanted short circuits or electrical crosstalk between the two sets of brushes 11 through the middle of the first conductive ring 6 are avoided, resulting in a clearer contact path.

[0040] Furthermore, the brush plate 11 preferably has a C-shaped structure, with multiple brushes arranged side by side on both sides. The C-shaped brush plate 11 can form a wraparound elastic contact tendency with the outer periphery of the first conductive ring 6 after assembly, so that the brush plate 11 maintains good adhesion and contact stability during the rotation of the rotor assembly 1. The multiple brushes arranged side by side on both sides of the brush plate 11 can further increase the number of contact points, making the current flow path more dispersed and stable, reducing the problems of overheating, excessive wear, or uneven contact resistance at single points, thus making it more suitable for high current conduction scenarios.

[0041] The brush holder 10 and the housing 9 are preferably assembled using a snap-fit ​​and rotation-locking method. Specifically, the end face of the brush holder 10 is provided with multiple brush holder female snaps 16, and the housing 9 is correspondingly provided with multiple housing male snaps 17. During installation, the housing male snaps 17 are snapped into the brush holder female snaps 16, and locking is completed by relative rotation after snapping. This structure can improve the installation and positioning accuracy of the brush holder 10 in the housing 9, and also facilitate assembly, disassembly and maintenance, avoiding the problems of low assembly efficiency and large space occupation caused by simply using screw fixation. At the same time, the circumferential distribution and cooperation of multiple brush holder female snaps 16 and multiple housing male snaps 17 can also improve the stability of the brush holder 10 after installation, preventing the brush holder 10 from loosening or shifting under long-term rotational vibration of the rotor assembly 1.

[0042] To improve the overall protective performance of the conductive slip ring, in addition to the O-ring 4 sealing the mating area between the SR tail structure 3 and the housing 9, a sealing layer is also provided at the outlet of the stator assembly 2. This sealing layer provides a complete seal for the stator conductor outlet area. Specifically, the opening where the stator conductor exits the housing 9 is filled, covered, and sealed with adhesive, sealing the gap between the stator conductor and the housing 9 and preventing external moisture and dust from entering the housing 9 through the outlet. Thus, the rotor tail end is sealed by the O-ring 4, and the stator outlet end is completely sealed by the sealing layer. Together, these two elements enhance the overall waterproof and dustproof performance of the conductive slip ring, making it more suitable for IP protection applications required by consumer electronics.

[0043] In this embodiment, during the assembly of the conductive slip ring, the rotor assembly 1 is first prefabricated by connecting multi-core flexible wires to the corresponding conductive rings, and forming a rotor body with coarse and fine stepped areas through injection molding, and forming the SR mesh tail structure 3 through injection molding; then, the O-ring 4 is assembled onto the outer periphery of the SR mesh tail structure 3, and waterproof grease can be applied to the surface of the O-ring 4; subsequently, the first bearing 5 and the second bearing 15 are respectively assembled onto the corresponding positions on the outer periphery of the rotor assembly 1. The rotor assembly 1 is then installed into the brush holder 10, so that the first conductive ring 6 contacts the brush plate 11, and the second conductive ring 8 contacts the brush 13. The brush holder 10 is then fixed in the housing 9 by the snap-fit ​​rotation of the male snap 17 of the housing and the female snap 16 of the brush holder, while the O-ring 4 forms a seal at the mating part of the SR mesh tail structure 3 and the housing 9. Finally, the outlet area of ​​the stator assembly 2 is sealed with glue to complete the assembly of the entire conductive slip ring.

[0044] In actual operation, when the rotor assembly 1 rotates relative to the stator assembly 2, the first conductive ring 6 maintains sliding conductive contact with the brush plate 11, thereby achieving stable transmission of the high-current circuit; the second conductive ring 8 maintains sliding conductive contact with the brush 13, thereby achieving stable transmission of the signal and / or low-current circuit. Since the first conductive ring 6 is arranged in the coarse-step region and the second conductive ring 8 is arranged in the fine-step region, a structural layered isolation is formed between the high-current path and the signal and low-current paths, effectively reducing interference. Simultaneously, supported at both ends by the first bearing 5 and the second bearing 15, the rotor assembly 1 can rotate smoothly, and with the combined action of the O-ring 4 and the stator outlet sealing layer, it maintains good waterproof and dustproof effects, thus enabling the entire conductive slip ring to possess conductive stability, protective performance, and high reliability.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An IP protection conductive slip ring suitable for consumer electrical appliances, characterized in that, It includes a rotor assembly and a stator assembly that mates with the rotor assembly; The rotor assembly includes a conductive ring arranged along the axial direction, a multi-core flexible wire, and an SR mesh tail structure, wherein each core of the multi-core flexible wire is electrically connected to the corresponding conductive ring; The stator assembly includes a housing, a brush holder installed in the housing, multiple sets of brush plates installed on the brush holder, a PCB board, and brushes installed on the PCB board. The brush plates and brushes are in sliding contact with conductive rings at corresponding positions to form a conductive path between the rotor assembly and the stator assembly. The rotor assembly also has a coarse step region and a fine step region formed sequentially along the axial direction. A first conductive ring carrying large current transmission is disposed in the coarse step region, and a second conductive ring carrying signal transmission and / or small current transmission is disposed in the fine step region. This step-like layered structure reduces the interference of large current on signal transmission and improves the injection molding concentricity of the rotor assembly.

2. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: Multiple sets of the brush plates are in conductive contact with the first conductive ring, and the brushes are in conductive contact with the second conductive ring.

3. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: When the rotor assembly is assembled with the housing, a sealing element is also provided. The sealing element is located at the mating part between the SR mesh tail structure and the housing to seal and protect the mating part.

4. The IP protection conductive slip ring for consumer electrical appliances according to claim 3, characterized in that: The sealing element is an O-ring, which is fitted around the outer periphery of the SR mesh tail structure and forms a radial sealing fit with the inner wall of the housing or the mating hole wall.

5. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: A sealing layer is provided at the outlet of the stator assembly to completely seal the outlet area of ​​the stator conductor.

6. The IP protection conductive slip ring for consumer electrical appliances according to claim 4, characterized in that: The surface of the O-ring is coated with waterproof grease to improve the waterproof and dustproof sealing performance of the SR mesh tail structure and the assembly part of the shell.

7. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: The rotor assembly also includes a first bearing and a second bearing, both of which are sleeved on the outer periphery of the rotor assembly and installed in conjunction with the brush holder.

8. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: The brush holder end face is provided with multiple brush holder female buckles, and the housing is provided with multiple housing male buckles. During installation, the housing male buckles are snapped into the brush holder female buckles and rotated to complete the installation.

9. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: An insulator is provided in the middle of the first conductive ring, and the brush plates are configured in two sets, which are respectively arranged on both sides of the insulator.

10. The IP protection conductive slip ring for consumer electrical appliances according to claim 1, characterized in that: The brush plate is C-shaped, with multiple brushes arranged side by side on both sides.

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