Conducting ring for motor shaft

Abstract

The utility model relates to the field of motor protection, in particular to a conducting ring for a motor shaft, which solves the problems of ensuring the fixing stability of a conducting brush and avoiding friction fracture between a carbon fiber bundle and the edge of an aluminum hollow pipe, and comprises a conducting ring and a riveting piece, a clamping groove is formed in the inner wall of the conducting ring, an aluminum pipe assembly is installed in the clamping groove, and the riveting piece is arranged in the aluminum pipe assembly. A clamping assembly is arranged on the inner wall of the conducting ring and matched with the aluminum pipe assembly. According to the utility model, the aluminum hollow pipe and the carbon fiber bundle can be integrally formed through the riveting piece, the falling is avoided, the aluminum hollow pipe is riveted to be square, the fixation is convenient, the locking force can be increased when the aluminum hollow pipe is fixed with the conducting ring, and the edge of the aluminum hollow pipe of the device is arranged to be the arc edge, so that the sealing performance is improved. The phenomenon of breakage caused by friction between the carbon fibers and the edge of the aluminum hollow pipe can be avoided, and when the carbon fibers make contact with the aluminum hollow pipe, a traditional right-angle edge is likely to become a stress concentration area, so that fiber breakage is caused.

Description

Technical Field

[0001] This utility model relates to the field of motor protection technology, specifically to a conductive ring for a motor shaft. Background Technology

[0002] In modern industrial automation and precision equipment, motors are the core power source, and their stability and reliability are of paramount importance. However, during high-speed operation, motors often generate static electricity on the shaft due to factors such as friction and electrical discharge. The higher the speed, the faster the static electricity is generated. If this problem is not properly addressed, it may lead to serious consequences such as electromagnetic interference, reduced motor lifespan, or even motor damage.

[0003] Shaft static electricity refers to the static charge accumulated on the motor shaft due to friction or other reasons. Shaft current flows through the motor bearings or other conductive parts, which may cause local overheating, accelerate bearing wear, and threaten the normal operation of the motor.

[0004] To eliminate static electricity on the shaft, one of the current technical solutions is to use conductive brushes. The conductive brushes provide a low-impedance path by contacting the motor shaft, guiding the shaft current to the outside, thereby protecting the bearings and internal components of the motor. However, the conductive brushes inside traditional conductive rings cannot be stably fixed, causing the conductive brushes to shake or fall off. At the same time, the carbon fiber bundles on the conductive brushes break due to friction with the edge of the aluminum hollow tube, resulting in the inability to eliminate static electricity on the shaft or a decrease in elimination efficiency.

[0005] Therefore, this utility model provides a conductive ring for motor shafts to solve the above-mentioned problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a conductive ring for motor shafts to solve the problems of ensuring the stability of the conductive brush fixation and avoiding the frictional breakage of carbon fiber bundles and aluminum hollow tube edges.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A conductive ring for a motor shaft includes a conductive ring and a riveting component. A groove is formed on the inner wall of the conductive ring, and an aluminum tube assembly is installed inside the groove. A snap-fit ​​component is provided on the inner wall of the conductive ring, and the snap-fit ​​component matches the aluminum tube assembly. The aluminum tube assembly includes a hollow aluminum tube and a carbon fiber bundle. The outer wall of the hollow aluminum tube is square, and the hollow aluminum tube is snapped into the groove. The snap-fit ​​component snaps into the outer wall of the hollow aluminum tube. The outer wall of one end of the hollow aluminum tube is formed with a rounded edge. A carbon fiber bundle is fixedly installed on the arc-shaped edge, with the other end of the carbon fiber bundle abutting against the outer wall of the motor shaft. The aluminum hollow tube in this device is initially a round tube. It is riveted into a square shape using riveting fittings. In use, one end of the carbon fiber bundle is first placed inside the aluminum hollow tube. Then, the outer wall of the aluminum hollow tube is riveted using riveting fittings to form a single unit. Finally, it is fixed by welding, making the installation of the carbon fiber bundle simpler and achieving a secure fixation. After the motor is started, the motor shaft... During the rotation of the motor shaft, the carbon fiber bundle brushes the groove of the motor shaft. In this process, the static electricity generated on the motor shaft is transported to the conductive ring, which is fixed to the carbon fiber bundle. This conductive ring then guides the charge to the motor housing and releases it to the outside. The conductive ring is fixed to the motor housing, thus conducting the static electricity from the motor shaft to the outside of the motor, reducing static electricity and protecting the motor. This device uses riveting to integrally form the aluminum hollow tube and carbon fiber bundle, preventing detachment. The square-shaped riveting of the aluminum hollow tube facilitates fixing and increases the locking force when fixed to the conductive ring. Furthermore, the rounded edges of the aluminum hollow tube prevent breakage caused by friction between the carbon fiber filaments and the tube's edge. When the carbon fiber filaments contact the aluminum hollow tube, traditional right-angled edges easily become stress concentration areas, leading to fiber breakage. The rounded edge design evenly distributes stress, avoiding sharp angles that cut and wear the carbon fiber filaments. This design not only extends the service life of the carbon fiber filaments but also improves the reliability and stability of the entire system.

[0009] Preferably, the snap-fit ​​assembly includes a snap-fit ​​shaft slidably connected to the inner wall of the conductive ring. A pressure-adhesive ring is fixedly installed on the outer wall of the middle part of the snap-fit ​​shaft, and the diameter of the pressure-adhesive ring decreases from top to bottom. A top-mounted snap-fit ​​plate is slidably connected to the inner wall of the snap-fit ​​groove. The top of the top-mounted snap-fit ​​plate is set as an inclined surface. One end of the top-mounted snap-fit ​​plate abuts against the outer wall of the aluminum hollow tube. A sliding column is fixedly installed at the other end of the top-mounted snap-fit ​​plate. The sliding column abuts against the outer wall of the pressure-adhesive ring. A tension spring is fixedly installed on the outer wall of the sliding column. The other end of the tension spring is fixedly connected to the inner side wall of the conductive ring. In the initial state, the tension spring stretches the sliding column and the top-mounted snap-fit ​​plate, and the top-mounted snap-fit ​​plate is in the abutting state. When snapping the aluminum hollow tube, the initial snap-fit ​​can be achieved.

[0010] Preferably, two card blocks are fixedly installed on the outer wall of the bottom of the card shaft. The two card blocks are installed along the circumference of the card shaft. The bottom of the card block is set as an arc surface and the top is set as a straight surface. A card box is fixedly installed on the inner bottom wall of the conductive ring. A limiting post is slidably connected to the inner side wall of the card box. A limiting block is fixedly installed at one end of the limiting post. The top of the limiting block is set as an arc surface and the bottom is set as a straight surface. A limiting spring is fixedly installed on the outer wall of the limiting post. The other end of the limiting spring is fixedly connected to the inner side wall of the card box.

[0011] Preferably, a retaining spring is fixedly installed on the inner bottom wall of the card box, and a retaining ring is fixedly installed on the top of the retaining spring. The retaining ring matches the bottom of the card shaft. In the initial state, the limiting block of this device extends under the action of the limiting spring. When it is necessary to clamp the aluminum tube assembly, the aluminum hollow tube is first placed inside the card slot, and the clamping plate abuts against the outer wall of the aluminum hollow tube to achieve the initial clamping. When the card shaft is pressed down, the retaining oblique ring and the card block on the outer wall of the card shaft will descend synchronously. At this time, the diameter of the retaining oblique ring and the sliding column abutting against each other continues to increase. The sliding column drives the retaining plate to move, thereby fixing the aluminum hollow tube. At the same time, when the card shaft descends, the card block... The curved surface and the curved surface of the limiting block abut against each other. The limiting block contracts under force, and the continuous descent of the clamping shaft will cause the clamping block to be located at the bottom of the limiting block. Since the two surfaces are facing each other, the limiting block restricts the clamping block at this time, and the clamping shaft is in a clamped state, thereby realizing the clamping and fixing of the aluminum hollow tube. With the action of the clamping box and the abutting clamping plate, this device can fix the aluminum hollow tube through double fixation, preventing the aluminum hollow tube from falling off or shaking, and ensuring the efficiency of eliminating static electricity on the shaft. At the same time, this device can play a shock absorption role through the action of the tension spring and the clamping spring, which can prevent the clamping shaft from rotating and ensure the stability of the clamping and fixing.

[0012] Preferably, a sliding box is installed on the outer wall of the upper part of the clamping shaft. The sliding box is slidably connected to the inner wall of the conductive ring. A spiral spring is installed inside the sliding box, and the other end of the spiral spring is fixedly connected to the outer wall of the clamping shaft. When the clamping shaft slides downward, the device will simultaneously drive the sliding box to slide. The spiral spring can limit the rotation of the clamping shaft. When the clamping shaft is engaged with the limiting block, the clamping ring abuts against the top of the clamping shaft under the action of the clamping spring. The clamping shaft abuts upward, and the top of the clamping block and the bottom of the limiting block abut against each other to prevent the clamping shaft from shaking. At the same time, when disassembling the aluminum hollow tube, the position of the clamping block and the limiting block can be changed by rotating the clamping shaft, which facilitates replacement and installation.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This device uses riveting components to integrally form the aluminum hollow tube and carbon fiber bundle, preventing them from falling off. The square shape of the riveted aluminum hollow tube facilitates fixing and increases the locking force when fixed to the conductive ring. Furthermore, the rounded edges of the aluminum hollow tube prevent breakage caused by friction between the carbon fiber filaments and the tube's edge. When the carbon fiber filaments contact the aluminum hollow tube, traditional right-angled edges easily become stress concentration areas, leading to fiber breakage. The rounded edge design evenly distributes stress, avoiding cutting and wear on the carbon fiber filaments from sharp angles. This design not only extends the service life of the carbon fiber filaments but also improves the reliability and stability of the entire system.

[0015] 2. With the action of the clamping box and the top clamping plate, this device can fix the aluminum hollow tube through double fixation, preventing the aluminum hollow tube from falling off or shaking, and ensuring the efficiency of eliminating static electricity on the shaft. At the same time, the device can play a shock absorption role through the action of the tension spring and the clamping spring, which can prevent the shaft from rotating and ensure the stability of the clamping fixation.

[0016] 3. When the clamping shaft slides downwards, the sliding box will slide synchronously. The spiral spring can limit the rotation of the clamping shaft. When the clamping shaft and the limiting block are engaged, the clamping shaft is engaged by the clamping spring, causing the clamping ring to press against the top of the clamping shaft, the clamping shaft to press upwards, and the top of the clamping block and the bottom of the limiting block to press against each other, preventing the clamping shaft from shaking. At the same time, when disassembling the aluminum hollow tube, the position of the clamping block and the limiting block can be changed by rotating the clamping shaft, which facilitates replacement and installation. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a top view schematic diagram of the present invention;

[0019] Figure 3 This is a frontal three-dimensional schematic diagram of the present invention;

[0020] Figure 4 This is a three-dimensional schematic diagram of the riveting component of this utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the aluminum tube assembly of this utility model;

[0022] Figure 6 This is a schematic diagram of the front view of the aluminum hollow tube of this utility model;

[0023] Figure 7 This is a schematic cross-sectional view of the conductive ring of this utility model;

[0024] Figure 8 This is a schematic diagram showing the engagement of the locking shaft and the limiting block in this utility model.

[0025] Figure 9 This is a schematic diagram showing the disengagement of the locking shaft and the limiting block in this utility model.

[0026] Figure 10 This is a schematic diagram of the interior of the slide box of this utility model.

[0027] In the diagram: 1. Conductive ring; 2. Slot;

[0028] 3. Aluminum tube assembly; 301. Hollow aluminum tube; 302. Carbon fiber bundle; 303. Rounded edge;

[0029] 4. Snap-fit ​​assembly; 401. Snap-fit ​​shaft; 402. Pressing oblique ring; 403. Push-off snap-fit ​​plate; 404. Sliding column; 405. Tension spring; 406. Snap-fit ​​block; 407. Snap-fit ​​box; 408. Limiting block; 409. Limiting spring; 410. Pressing spring; 411. Pressing ring; 412. Sliding box; 413. Spiral spring;

[0030] 5. Riveted parts. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0032] A conductive ring for a motor shaft, as shown in the attached image. Figure 1-3 As shown, it includes a conductive ring 1 and a riveting component 5. A groove 2 is formed on the inner wall of the conductive ring 1, and an aluminum tube assembly 3 is installed inside the groove 2. A snap-fit ​​component 4 is provided on the inner wall of the conductive ring 1, and the snap-fit ​​component 4 matches the aluminum tube assembly 3; as shown in the attached figure. Figure 4-6As shown, the aluminum tube assembly 3 includes a hollow aluminum tube 301 and a carbon fiber bundle 302. The outer wall of the hollow aluminum tube 301 is square. The hollow aluminum tube 301 is snapped into the inside of the slot 2. The snapping assembly 4 snaps into the outer wall of the hollow aluminum tube 301. The outer wall of one end of the hollow aluminum tube 301 is set as an arc edge 303. The carbon fiber bundle 302 is fixedly installed on the arc edge 303 at one end of the hollow aluminum tube 301. The other end of the carbon fiber bundle 302 abuts against the outer wall of the motor shaft. The hollow aluminum tube 301 of this device is initially a round tube. It is formed by using riveting. The clamping component 5 rivets the outer wall of the aluminum hollow tube 301 into a square shape. During use, one end of the carbon fiber bundle 302 is first placed inside one end of the aluminum hollow tube 301. Then, the clamping component 5 is used to rivet the outer wall of the aluminum hollow tube 301, making them a single unit. Afterwards, welding is used for further fixation, simplifying the installation of the carbon fiber bundle 302 and achieving a secure hold. After the motor is started, the motor shaft rotates, and the carbon fiber bundle 302 brushes against the motor shaft annular groove. During this process, the static electricity generated by the motor shaft is dissipated. The carbon fiber bundle 302, fixed by the conductive ring 1, is transported to the conductive ring 1, thereby guiding the charge to the motor housing and releasing it to the outside. The conductive ring 1 is fixed to the motor housing, which can conduct the static electricity of the motor shaft to the outside of the motor, thereby reducing the static electricity of the shaft and protecting the motor. This device uses the riveting part 5 to make the aluminum hollow tube 301 and the carbon fiber bundle 302 integrally formed, preventing them from falling off. At the same time, the aluminum hollow tube 301 is riveted into a square shape, which is convenient for fixing and increases the locking force when fixed to the conductive ring 1. In addition, the edge of the aluminum hollow tube 301 is set as a rounded edge 303, which can avoid the breakage caused by the friction between the carbon fiber and the edge of the aluminum hollow tube 301. When the carbon fiber comes into contact with the aluminum hollow tube 301, the traditional right-angle edge is prone to become a stress concentration area, which can lead to fiber breakage. However, the rounded edge design can evenly distribute the stress and avoid the cutting and wear of the carbon fiber by sharp angles. This design not only extends the service life of the carbon fiber but also improves the reliability and stability of the entire system.

[0033] As attached Figure 7 As shown, the snap-fit ​​assembly 4 includes a snap-fit ​​shaft 401, which is slidably connected to the inner wall of the conductive ring 1. A pressure-resistant inclined ring 402 is fixedly installed on the outer wall of the middle part of the snap-fit ​​shaft 401, and the diameter of the pressure-resistant inclined ring 402 decreases from top to bottom.

[0034] A top-mounted plate 403 is slidably connected to the inner wall of the slot 2. The top of the top-mounted plate 403 is set as an inclined surface. One end of the top-mounted plate 403 abuts against the outer wall of the aluminum hollow tube 301. A sliding column 404 is fixedly installed at the other end of the top-mounted plate 403. The sliding column 404 abuts against the outer wall of the pressure inclined ring 402. A tension spring 405 is fixedly installed on the outer wall of the sliding column 404. The other end of the tension spring 405 is fixedly connected to the inner side wall of the conductive ring 1. In the initial state, the tension spring 405 stretches the sliding column 404 and the top-mounted plate 403, and the top-mounted plate 403 is in the abutting state. When the aluminum hollow tube 301 is clamped, the initial clamping can be achieved.

[0035] As attached Figure 7-9 As shown, two locking blocks 406 are fixedly installed on the outer wall of the bottom of the locking shaft 401. The two locking blocks 406 are installed along the circumference of the locking shaft 401. The bottom of the locking block 406 is set as an arc surface and the top is set as a straight surface.

[0036] A card box 407 is fixedly installed on the inner bottom wall of the conductive ring 1. A limiting post is slidably connected to the inner side wall of the card box 407. A limiting block 408 is fixedly installed at one end of the limiting post. The top of the limiting block 408 is set as an arc surface and the bottom is set as a straight surface. A limiting spring 409 is fixedly installed on the outer wall of the limiting post. The other end of the limiting spring 409 is fixedly connected to the inner side wall of the card box 407.

[0037] As attached Figure 8-9As shown, a retaining spring 410 is fixedly installed on the inner bottom wall of the card box 407, and a retaining ring 411 is fixedly installed on the top of the retaining spring 410. The retaining ring 411 matches the bottom of the card shaft 401. In the initial state, the limiting block 408 of this device extends under the action of the limiting spring 409. When it is necessary to clamp the aluminum tube assembly 3, the aluminum hollow tube 301 is first placed inside the card slot 2, and the abutting plate 403 abuts against the outer wall of the aluminum hollow tube 301 to achieve the initial clamping. When the card shaft 401 is pressed down, the pressing inclined ring 402 and the card block 406 on the outer wall of the card shaft 401 will descend synchronously. At this time, the diameter of the abutting inclined ring 402 and the sliding column 404 continuously increases. The sliding column 404 drives the abutting plate 403 to move, thereby fixing the aluminum hollow tube 301. At the same time, when the card shaft 401 descends, The arc surface of the locking block 406 abuts against the arc surface of the limiting block 408, causing the limiting block 408 to contract under force. The continuous descent of the locking shaft 401 will cause the locking block 406 to be located at the bottom of the limiting block 408. Since the two surfaces are facing each other, the limiting block 408 restricts the locking block 406 at this time, and the locking shaft 401 is in a locked state, thereby achieving the locking and fixing of the aluminum hollow tube 301. Under the action of the locking box 407 and the abutting locking plate 403, this device can fix the aluminum hollow tube 301 through double fixing, avoiding the phenomenon of the aluminum hollow tube 301 falling off or shaking, and ensuring the efficiency of eliminating static electricity on the shaft. At the same time, the device can play a shock absorption role through the action of the tension spring 405 and the clamping spring 410, which can prevent the locking shaft 401 from rotating and ensure the stability of the locking and fixing.

[0038] As attached Figure 10 As shown, a sliding box 412 is installed on the outer wall of the upper part of the locking shaft 401. The sliding box 412 is slidably connected to the inner wall of the conductive ring 1. A spiral spring 413 is installed inside the sliding box 412. The other end of the spiral spring 413 is fixedly connected to the outer wall of the locking shaft 401. When the locking shaft 401 slides downward, the sliding box 412 will slide synchronously. The spiral spring 413 can limit the rotation of the locking shaft 401. When the locking shaft 401 is engaged with the limiting block 408, the locking shaft 401, under the action of the clamping spring 410, causes the clamping ring 411 to abut against the top of the locking shaft 401. The locking shaft 401 abuts upward, and the top of the locking block 406 abuts against the bottom of the limiting block 408, preventing the locking shaft 401 from shaking. At the same time, when disassembling the aluminum hollow tube 301, the position of the locking block 406 and the limiting block 408 can be changed by rotating the locking shaft 401, which facilitates replacement and installation.

[0039] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A conductive ring for a motor shaft, characterized in that, It includes a conductive ring (1) and a riveting component (5). The inner wall of the conductive ring (1) is provided with a slot (2). An aluminum tube assembly (3) is installed inside the slot (2). A snap-fit ​​component (4) is provided on the inner wall of the conductive ring (1). The snap-fit ​​component (4) matches the aluminum tube assembly (3). The aluminum tube assembly (3) includes an aluminum hollow tube (301) and a carbon fiber bundle (302). The outer wall of the aluminum hollow tube (301) is square. The aluminum hollow tube (301) is snapped into the inside of the slot (2). The snapping assembly (4) is snapped into the outer wall of the aluminum hollow tube (301). The outer wall of one end of the aluminum hollow tube (301) is set as an arc edge (303). A carbon fiber bundle (302) is fixedly installed on the arc edge (303) of one end of the aluminum hollow tube (301). The other end of the carbon fiber bundle (302) abuts against the outer wall of the motor shaft.

2. The conductive ring for a motor shaft according to claim 1, characterized in that, The snap-fit ​​assembly (4) includes a snap-fit ​​shaft (401), which is slidably connected to the inner wall of the conductive ring (1). A pressure-resistant inclined ring (402) is fixedly installed on the outer wall of the middle part of the snap-fit ​​shaft (401), and the diameter of the pressure-resistant inclined ring (402) decreases from top to bottom. A top plate (403) is slidably connected to the inner wall of the slot (2). The top of the top plate (403) is set as an inclined surface. One end of the top plate (403) abuts against the outer wall of the aluminum hollow tube (301). A sliding column (404) is fixedly installed at the other end of the top plate (403). The sliding column (404) abuts against the outer wall of the pressing inclined ring (402). A tension spring (405) is fixedly installed on the outer wall of the sliding column (404). The other end of the tension spring (405) is fixedly connected to the inner wall of the conductive ring (1).

3. A conductive ring for a motor shaft according to claim 2, characterized in that, A locking block (406) is fixedly installed on the outer wall of the bottom of the locking shaft (401). There are two locking blocks (406). The two locking blocks (406) are installed along the circumferential direction of the locking shaft (401). The bottom of the locking block (406) is set as an arc surface and the top is set as a straight surface. A card box (407) is fixedly installed on the inner bottom wall of the conductive ring (1). A limiting post is slidably connected to the inner side wall of the card box (407). A limiting block (408) is fixedly installed at one end of the limiting post. The top of the limiting block (408) is set as an arc surface and the bottom is set as a straight surface. A limiting spring (409) is fixedly installed on the outer wall of the limiting post. The other end of the limiting spring (409) is fixedly connected to the inner side wall of the card box (407).

4. A conductive ring for a motor shaft according to claim 3, characterized in that, A retaining spring (410) is fixedly installed on the inner bottom wall of the card box (407), and a retaining ring (411) is fixedly installed on the top of the retaining spring (410), which matches the bottom of the card shaft (401).

5. A conductive ring for a motor shaft according to claim 4, characterized in that, A slide box (412) is installed on the outer wall of the upper part of the locking shaft (401). The slide box (412) is slidably connected to the inner wall of the conductive ring (1). A spiral spring (413) is installed inside the slide box (412). The other end of the spiral spring (413) is fixedly connected to the outer wall of the locking shaft (401).

Images