A rotating electrically conductive device

Abstract

The utility model discloses a rotating conductive device relates to electrical connection equipment field, including insulating tube, fixed ring and movable ring, the insulating tube outer wall axial line groove contains wire, the fixed ring is fixed in the insulating tube outside, the inside connects wire, the outside is through the rolling body or the concave-convex arc sliding structure and movable ring rotation connection, realizes the support and the conductive function combination, the movable ring outside diameter is equipped with the terminal terminal current, the interval sleeve positioning between adjacent fixed ring, the shell adopts half circular ring bolt connection structure, covers the conductive area to isolate environmental interference and provides the limiting effect. The device reduces the wear and tear through many rolling bodies parallel connection, and the sliding structure cooperation shell seal improves reliability, and its simple structure, low maintenance cost, strong environmental adaptability is applicable to industrial automation, motor drive and other rotating equipment dynamic conductive scene, and has long life and stability.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection equipment, and in particular to a rotating conductive device. Background Technology

[0002] In fields such as industrial automation, motor drives, and rotary detection equipment, rotary conductive devices are core components for transmitting current and signals between rotating and stationary parts. Their function is to maintain a reliable electrical connection during dynamic rotation, ensuring the normal operation of the equipment. For example, in a motor system, the rotary conductive device must stably transmit external power to the rotating rotor; in sensor equipment, it must transmit signals from the rotating parts to the stationary end for processing in real time. Therefore, such devices must possess high reliability in conductivity, long mechanical life, low-cost manufacturing and maintenance, and the ability to adapt to complex operating conditions.

[0003] However, current mainstream rotary conductive technologies (such as traditional slip rings and single-point brush connection devices) generally have some shortcomings. When using a single brush or single-point contact conductive structure, the single-point contact is prone to increased contact resistance or even open circuit due to vibration and wear when the equipment rotates. This is especially problematic in high-precision signal transmission scenarios, potentially leading to data distortion or equipment failure. Long-term high-speed rotation between the fixed and moving rings causes rapid wear on the contact surfaces, requiring frequent component replacements and resulting in low functional integration: existing devices generally couple mechanical support with conductive functions, making it impossible to achieve integrated maintenance of the "support structure" and "conductive components," further increasing operating costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a rotary conductive device that is low in cost, has high mechanical reliability, and has a longer service life.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A rotating conductive device, the key technology of which includes an insulating tube, a fixed ring, and a movable ring; the fixed ring is coaxially fixed to the outside of the insulating tube and fixedly connected; the movable ring is coaxially sleeved on the outside of the fixed ring and electrically connected to the fixed ring; a terminal is radially fixed on the outside of the movable ring; a wire-receiving groove is axially opened on the outer wall of the insulating tube, with both ends of the wire-receiving groove penetrating both ends of the insulating tube; a wire is fixedly connected to the inner wall of the fixed ring, with the wire located in the corresponding wire-receiving groove; a spacer sleeve is installed between adjacent fixed rings; and a terminal is radially arranged on the outside of the movable ring.

[0007] Preferably, the fixed ring and the movable ring are in rolling engagement, and a rolling element arranged in an array around the axis of the fixed ring is provided between the outer wall of the fixed ring and the inner wall of the movable ring. The rolling element is a steel ball or a cylinder, and the movable ring, the fixed ring and the rolling element are all conductors.

[0008] Preferably, the fixed ring and the movable ring are slidably fitted together, and the outer wall of the fixed ring and the inner wall of the movable ring are both arc-shaped structures; the inner wall of the movable ring is a concave arc-shaped structure, and the outer wall of the fixed ring is a convex arc-shaped structure, and the two fit together; both the movable ring and the fixed ring are conductors.

[0009] Preferably, the outer casing comprises two semi-circular annular shells connected by bolts; the outer casing covers a movable ring and a fixed ring; the inner diameter of the lower edge of the outer casing is the same as the outer diameter of the spacer sleeve; a pre-drilled hole is provided on the outer casing, and the wiring terminal on the outside of the movable ring passes through the pre-drilled hole of the outer casing; both the spacer sleeve and the outer casing are insulators.

[0010] The beneficial effects of adopting the above technical solution are as follows:

[0011] This invention uses a rolling element to connect the fixed ring and the movable ring. All three elements—the rolling element, the fixed ring, and the movable ring—are conductors, forming a conductive channel that combines conductive and support functions. This simplifies the overall structure, facilitates installation and maintenance, and reduces manufacturing costs.

[0012] This invention uses a rolling element to achieve a rotary connection between the fixed ring and the moving ring, which greatly reduces the mechanical wear of the system and improves the service life of the machinery; at the same time, the modular design reduces the complexity of equipment installation and maintenance, and further reduces costs. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0016] Figure 3 This is a partial cross-sectional structural schematic diagram of Embodiment 2 of this utility model;

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Insulating tube; 2. Fixed ring; 3. Moving ring; 4. Wire groove; 5. Rolling element; 6. Spacer sleeve; 7. Terminal block; 8. Housing. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The insulating tube 1 is a cylindrical insulating structure. A wire-receiving groove 4 is axially opened on the outer wall of the insulating tube 1 to accommodate the wire to be measured. The two ends of the wire-receiving groove 4 pass through the two ends of the insulating tube 1. The wire is fixedly connected to the inner wall of the fixing ring 2. The wire is located in the corresponding position of the wire-receiving groove 4 to secure the line and prevent the line from shaking or falling off during rotation. Lines that do not need to be measured can pass directly through the insulating tube 1 without passing through the wire-receiving groove 4. Multiple lines can be planned for wiring through the wire-receiving groove 4, and the lines can be passed through independently.

[0021] Spacer sleeves 6 are installed between adjacent fixed rings 2 to ensure that the relative positions of each fixed ring 2 are fixed and to prevent relative movement from causing current disturbance in the connection between the fixed rings 2.

[0022] Example 1

[0023] like Figure 1 The fixed ring 2 is a ring structure, sleeved on the outside of the insulating tube 1, and fixedly connected by welding or snap-fitting to ensure the stability of the device structure. It provides structural support, establishes a current information transmission channel, and enables current information collection. The inner side of the fixed ring 2 is connected to a wire. Between the outer wall of the fixed ring 2 and the inner wall of the movable ring 3, there is a rolling element 5 arranged around the axis of the fixed ring 2. The rolling element 5 is a steel ball or cylinder. Dustproof plates are installed on both sides of the rolling element 5 to isolate dust and oil from the working environment, preventing impurities from entering the conductive path and affecting the reliability of the rolling connection. The conductivity of the conductive circuit is ensured by the rolling element 5 on the outer side of the fixed ring 2, which is connected to the movable ring 3 by the rolling element 5, so that the movable ring 3 and the fixed ring 2 can rotate relative to each other. Multiple rolling elements 5 are evenly distributed along their axes to form parallel conductive channels and multiple support points for uniform force distribution. When an abnormal situation causes wear of a single rolling element 5, the circuit transmission can still be maintained through other conductive channels, which improves the reliability of the device. At the same time, the uniform force distribution at multiple support points can make the wear uniform, avoid concentrated wear of a single rolling element 5, and extend the overall service life. Terminals 7 are radially arranged on the outer side of the movable ring 3 to realize the current extraction.

[0024] By using the aforementioned rolling connection method, the sliding friction between the fixed ring 2 and the movable ring 3 is converted into rolling friction, reducing the coefficient of friction, minimizing mechanical wear, and extending the lifespan of the device. Simultaneously, a current transmission channel is established between the wire, fixed ring 2, rolling element 5, movable ring 3, and terminal 7, forming a conductive circuit. This achieves a combination of support and conductivity, resulting in a simple structure that facilitates installation and subsequent maintenance. All support components are rigidly connected, minimizing movement in high-speed rotating environments. This ensures stable engagement between the fixed ring 2 and the movable ring 3, improving the reliability of conductivity and enhancing the overall stability of the system, thus extending its mechanical lifespan.

[0025] Example 2

[0026] like Figure 2-3 The inner side of the fixed ring 2 is also fixedly connected to the insulating tube 1. The outer side of the fixed ring 2 has a raised arc-shaped structure, and the inner side of the fixed ring 2 is connected to the wire. The inner side of the movable ring 3 has a concave arc-shaped structure, and the outer side of the movable ring 3 is provided with a terminal 7. The inner side of the movable ring 3 and the outer side of the fixed ring 2 form a sliding fit to ensure the reliability of the sliding connection. At the same time, a shell 8 is fitted on the outer side of the movable ring 3. The shell 8 consists of two semi-circular shells connected by bolts to form a complete shell, covering the fixed ring 2 and the movable ring 3, providing fixation and protection. The inner diameter of the lower edge of the shell 8 is the same as the outer diameter of the spacer sleeve 6, maximizing the isolation of external interference when the device rotation is unrestricted. A hole is reserved on the shell 8, through which the terminal 7 on the outer side of the movable ring 3 passes to allow current to be led out.

[0027] In this embodiment, rotation is achieved through a sliding connection between the fixed ring 2 and the movable ring 3, replacing the rolling connection in Embodiment 1. This simplifies the structure, allowing for direct inspection of the conductive parts simply by disassembling the outer casing 8, making maintenance convenient. The outer casing 8 provides limiting support for the sliding fit between the fixed ring 2 and the movable ring 3. While the movable ring 3 is fixed and the fixed ring 2 is rotating, the outer casing 8 provides external connection and fixation, offering both support and protection. In industrial production, dust and oil contamination can lead to poor contact and reduced lifespan. The outer casing 8 completely covers the conductive area, isolating the environment from the conductive lines and providing mechanical protection against external impacts. The outer casing 8 uses bolt connections, making installation and disassembly simple and facilitating future maintenance and upgrades.

[0028] In practical use, during operation, the wiring inside the insulating tube 1 is connected to the inside of the fixed ring 2 through the wire groove 4, and output to external equipment via the terminal 7 on the outside of the movable ring 3. There are two operating modes: in one mode, the fixed ring 2 rotates with the insulating tube 1 connected to the drive structure, while the movable ring 3 is fixed and limited by the connection to the outside via the outer shell 8; in the other mode, the movable ring 3 rotates via the external drive connected to the outer shell 8, while the fixed ring 2 and the insulating tube 1 are fixed and do not rotate by the external connection, thus achieving two different operating modes. The movable ring 3 and the fixed ring 2 are connected by a rolling or sliding structure, allowing for relative rotation. Simultaneously, continuous conductivity is maintained through the contact between the fixed ring 2 and the movable ring 3, making it suitable for environments requiring rotational conductivity and achieving low cost and long lifespan.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotating conductive device, characterized in that, The device includes an insulating tube (1), a fixed ring (2), and a movable ring (3); the fixed ring (2) is coaxially fixed to the outside of the insulating tube (1) and fixedly connected; the movable ring (3) is coaxially sleeved on the outside of the fixed ring (2) and electrically connected to the fixed ring (2); a terminal (7) is radially fixed on the outside of the movable ring (3); a wire-receiving groove (4) is axially opened on the outer wall of the insulating tube (1), and the two ends of the wire-receiving groove (4) pass through the two ends of the insulating tube (1); a wire is fixedly connected to the inner wall of the fixed ring (2), and the wire is located in the corresponding wire-receiving groove (4); a spacer sleeve (6) is installed between adjacent fixed rings (2); a terminal (7) is radially provided on the outside of the movable ring (3).

2. The rotating conductive device according to claim 1, characterized in that, The fixed ring (2) and the movable ring (3) are in rolling engagement. A rolling element (5) is arranged between the outer wall of the fixed ring (2) and the inner wall of the movable ring (3) around the axis of the fixed ring (2). The rolling element (5) is a steel ball or a cylinder. The movable ring (3), the fixed ring (2) and the rolling element (5) are all conductors.

3. The rotating conductive device according to claim 1, characterized in that, The fixed ring (2) and the movable ring (3) are slidably fitted together. The outer wall of the fixed ring (2) and the inner wall of the movable ring (3) are both arc-shaped structures. The inner wall of the movable ring (3) is a concave arc-shaped structure, and the outer wall of the fixed ring (2) is a convex arc-shaped structure. The two fit together. Both the movable ring (3) and the fixed ring (2) are conductors.

4. A rotating conductive device according to claim 3, characterized in that, The outer shell (8) includes two semi-circular shells connected by bolts; the outer shell (8) covers the movable ring (3) and the fixed ring (2) and is sleeved on the outside of the movable ring (3); the inner diameter of the lower edge of the outer shell (8) is the same as the outer diameter of the spacer sleeve (6); the outer shell (8) has a reserved hole, and the wiring terminal (7) on the outside of the movable ring (3) passes through the reserved hole of the outer shell (8); the outer shell (8) and the spacer sleeve (6) are both insulators.

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