Motor commutator angle adjustment device

Abstract

This application discloses a motor commutator angle adjustment device, relating to the field of motor commutator technology. The device includes a base on which a mounting seat for fixing the commutator on a rotor is mounted. A scale is arranged around the rotor on the mounting seat. A rotating seat is rotatably mounted on the outer side of the mounting seat. A mounting bracket for fixing the rotor extends from the top of the rotating seat. The rotor, mounting seat, and rotating seat are coaxially arranged. A reference line corresponding to the scale is provided on the upper surface of the rotating seat. By rotating the rotating seat, the rotor rotates relative to the commutator, adjusting the relative angle between the rotor and the commutator. The scale and the reference line on the rotating seat allow for precise adjustment and visual reading of the commutator angle. The coaxial arrangement of the rotor, mounting seat, and rotating seat ensures the stability and concentricity of the rotor rotation, maintains the relative positional accuracy between the rotor and the commutator, avoids adjustment errors caused by eccentricity, and improves the accuracy of angle adjustment.

Description

Technical Field

[0001] This application relates to the field of motor commutator technology, and in particular to a motor commutator angle adjustment device. Background Technology

[0002] In motor systems, the relative angle between the commutator and the rotor directly affects the motor's commutation performance, including spark suppression, electromagnetic torque stability, and operating efficiency. Especially in high-precision drive applications (such as drive motors for new energy vehicles and precision servo motors), the commutator angle deviation must be controlled within an extremely small range (usually ≤0.5°), otherwise it will lead to accelerated brush wear, output torque fluctuations, or even motor overheating and failure.

[0003] In the existing technology, the commutator angle adjustment uses a fixed bracket and bolt clamping structure to fix the commutator of the rotor. The rotor is rotated manually and the position of the commutator is observed. A scale or angle ruler is used to assist in reading the angle.

[0004] Regarding the aforementioned technologies, the inventors believe that by manually rotating the rotor and observing the commutator position to take readings, the scale markings on the ruler are not on the same axis as the actual rotation center, resulting in discrepancies in the readings and causing a deviation in the relative angle between the rotor and the commutator. Utility Model Content

[0005] The purpose of this application is to provide a motor commutator angle adjustment device to improve the problem of discrepancies in readings caused by the scale markings on the ruler being off-axis from the actual rotation center when manually rotating the rotor and observing the commutator position, resulting in a deviation in the relative angle between the rotor and the commutator.

[0006] The motor commutator angle adjustment device provided in this application adopts the following technical solution:

[0007] A motor commutator angle adjustment device includes a base, on which a mounting seat for fixing the commutator on a rotor is provided. A scale is provided around the rotor on the mounting seat. A rotating seat is rotatably provided on the outside of the mounting seat. A fixing frame for fixing the rotor extends from the top of the rotating seat. The rotor, mounting seat and rotating seat are coaxially arranged. A reference line corresponding to the scale is provided on the upper surface of the rotating seat.

[0008] By adopting the above technical solution, a mounting base is set on the base to fix the commutator on the rotor. By rotating the rotating base, the fixing frame rotates with the rotor, and the relative angle between the rotor and the commutator is adjusted. The scale dial and the reference line on the rotating base can achieve precise adjustment and visual reading of the commutator angle. The coaxially set rotor, mounting base and rotating base ensure the stability and concentricity of the rotor rotation process, maintain the relative position accuracy of the rotor and the commutator, avoid adjustment errors caused by eccentricity, and improve the accuracy of angle adjustment.

[0009] Optionally, the mounting base has a positioning hole at its center corresponding to the commutator, and a fixing groove is provided on the inner side wall of the positioning hole. A positioning block is inserted into the fixing groove, and the positioning block is provided with a positioning protrusion that is inserted into the gap of the commutator. The positioning protrusion fits against the gap side wall of the commutator.

[0010] By adopting the above technical solution, the positioning protrusion of the positioning block is embedded in the gap of the commutator to limit the commutator inserted into the positioning hole, preventing the commutator from rotating or shifting during the adjustment process, and ensuring the fixing accuracy of the commutator relative to the mounting base.

[0011] Optionally, the mounting base has a mounting groove corresponding to the scale at its edge. The scale is fixedly connected to the side wall of the mounting groove. The scale is lower than the mounting base and flush with the baseline of the top of the rotating base.

[0012] By adopting the above technical solution, the dial is fixed with screws in the mounting groove of the mounting base to prevent the dial from rotating. The dial is lower than the mounting base and flush with the baseline of the top of the rotating base to prevent the dial from protruding and colliding with the rotor. At the same time, it is convenient for the staff to read the scale on the dial corresponding to the baseline by visually through the baseline.

[0013] Optionally, the rotating seat has a rotating groove that fits against the outer side of the mounting seat, the rotating seat has an arc-shaped waist-shaped groove at its edge, the base has a fixing hole corresponding to the waist-shaped groove, the fixing hole has a threaded limit rod corresponding to the waist-shaped groove, and the top of the limit rod has a nut that abuts against the rotating seat.

[0014] By adopting the above technical solution, the rotating groove of the rotating seat fits against the outer side of the mounting base, allowing the rotating seat to rotate freely around the central axis of the mounting base, thus meeting the rotation requirements for angle adjustment. The waist-shaped groove on the edge cooperates with the limiting rod in the fixing hole of the base. When locked with a nut, the rotating seat can be fixed at any angle position, which facilitates accurate reading on the scale corresponding to the baseline on the rotating seat.

[0015] Optionally, the fixing frame is provided with a fixing block, and the fixing block is provided with a fixing groove two facing the rotor. A positioning block two is inserted into the fixing groove two. The positioning block two is provided with a positioning protrusion two that is inserted into the gap between the outer circle of the rotor's teeth. The positioning protrusion two is in contact with the side wall of the gap between the outer circle of the rotor's teeth.

[0016] By adopting the above technical solution, the fixing block on the fixing frame is embedded in the outer circle gap of the rotor teeth by the positioning protrusion of the second positioning block, so as to realize the circumferential positioning of the rotor. The fit between the second positioning protrusion and the side wall of the gap ensures that the rotor rotates synchronously with the rotating seat during the adjustment process, and avoids the rotor from rotating relative to the rotating seat, thereby ensuring the relative angle accuracy between the rotor and the commutator.

[0017] Optionally, the fixing block has a groove on the side facing the rotor that fits against the outer circular sidewall of the rotor.

[0018] By adopting the above technical solution, the groove on the fixing block fits into the outer circular side wall of the rotor, increasing the contact area between the fixing block and the rotor, preventing the rotor from wobbling radially during adjustment, and improving the stability of rotor fixing.

[0019] Optionally, the positioning protrusion one and positioning protrusion two are arranged with rounded corners facing the rotor.

[0020] By adopting the above technical solution, the positioning protrusion one and positioning protrusion two are positioned with rounded corners facing the rotor, which avoids scratches or deformation of the component surface caused by right-angled edges when inserting into the commutator gap and rotor tooth gap.

[0021] Optionally, the second positioning protrusion is on the same axis as the reference line.

[0022] By adopting the above technical solution, the second positioning protrusion is set coaxially with the baseline. When the second positioning protrusion is embedded in the gap of the rotor teeth, the baseline directly corresponds to the specific circumferential position of the rotor. The operator can accurately determine the angular relationship between the rotor and the commutator by the relative position of the baseline and the dial.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By rotating the rotating base, the rotor rotates relative to the commutator, thereby adjusting the relative angle between the rotor and the commutator. The coaxially arranged rotor, mounting base, and rotating base ensure the stability and concentricity of the rotor rotation process, maintain the relative position accuracy between the rotor and the commutator, avoid adjustment errors caused by eccentricity, and improve the accuracy of angle adjustment.

[0025] 2. The positioning protrusion of the positioning block is embedded in the gap of the commutator to limit the commutator inserted into the positioning hole, preventing the commutator from rotating or shifting during the adjustment process and ensuring the fixing accuracy of the commutator relative to the mounting base.

[0026] 3. The fixing block on the fixed frame is embedded in the outer circle gap of the rotor teeth by the positioning protrusion of the second positioning block, so as to achieve circumferential positioning of the rotor. The fit between the second positioning protrusion and the side wall of the gap ensures that the rotor rotates synchronously with the rotating seat during the adjustment process, and avoids the rotor from rotating relative to the rotating seat, thereby ensuring the relative angle accuracy between the rotor and the commutator. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of the motor commutator angle adjustment device;

[0028] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0029] Figure 3 This is a partial sectional view of the motor commutator angle adjustment device.

[0030] In the diagram, 1. Base; 11. Fixing hole; 12. Limiting rod; 13. Nut; 2. Mounting seat; 21. Positioning hole; 22. Fixing groove one; 23. Positioning block one; 231. Positioning protrusion one; 24. Mounting groove; 3. Dial; 4. Rotating seat; 41. Fixing bracket; 411. Fixing block; 412. Fixing groove two; 413. Positioning block two; 414. Positioning protrusion two; 415. Groove; 42. Baseline; 43. Rotating groove; 44. Waist-shaped groove; 5. Rotor; 51. Commutator. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0032] Motor commutator angle adjustment device, refer to Figure 1 and Figure 2 The system includes a metal base 1, and a mounting base 2 for a commutator 51 fixed on a rotor 5, which is bolted to the base 1. The mounting base 2 has a positioning hole 21 corresponding to the commutator 51 at its center. A fixing groove 22 is formed on the inner side wall of the positioning hole 21. A metal positioning block 23 is inserted into the fixing groove 22. The positioning block 23 has an integrally formed positioning protrusion 231. The positioning protrusion 231 is inserted into the gap of the commutator 51 and fits against the gap side wall of the commutator 51, limiting the commutator 51 inserted into the positioning hole 21, preventing the commutator 51 from rotating or shifting during the adjustment process, and ensuring the fixing accuracy of the commutator 51 relative to the mounting base 2.

[0033] Reference Figure 2 and Figure 3A mounting groove 24 is provided at the edge of the mounting base 2. A scale 3 surrounding the rotor 5 is fixed with bolts at the mounting groove 24 of the mounting base 2. A metal rotating base 4 is rotatably provided on the outside of the mounting base 2. A reference line 42 corresponding to the scale 3 is provided on the upper surface of the rotating base 4. The scale 3 is lower than the mounting base 2 and flush with the reference line 42 at the top of the rotating base 4. A rotating groove 43 is provided in the rotating base 4 to fit against the outside of the mounting base 2, so that the rotating base 4 can rotate around the mounting base 2. An arc-shaped waist groove 44 is provided at the edge of the rotating base 4. A fixing hole 11 corresponding to the waist groove 44 is provided on the base 1. A limiting rod 12 corresponding to the waist groove 44 is threaded in the fixing hole 11. A nut 13 that abuts against the rotating base 4 is threaded on the top of the limiting rod 12. When locked by the nut 13, the rotating base 4 can be fixed at any angle position, so that the reading on the scale 3 corresponding to the reference line 42 on the rotating base 4 is accurate.

[0034] Reference Figure 1 and Figure 3 An integrally formed fixing frame 41 for fixing the rotor 5 extends from the top of the rotating seat 4. The rotor 5, the mounting seat 2, and the rotating seat 4 are coaxially arranged. A metal fixing block 411 is welded onto the fixing frame 41. A fixing groove 412 is formed on the fixing block 411 facing the rotor 5. A positioning block 413 is inserted into the fixing groove 412. The positioning block 413 is provided with an integrally formed positioning protrusion 414. The positioning protrusion 414 is inserted into the gap between the outer circle of the rotor 5's teeth and fits against the side wall of the gap between the outer circle of the rotor 5's teeth, ensuring that the rotor 5 is adjusted... During the adjustment process, it rotates synchronously with the rotating seat 4. The second positioning protrusion 414 and the reference line 42 are on the same axis. The fixing block 411 has a groove 415 on the side facing the rotor 5 that fits against the outer circular side wall of the rotor 5, which increases the contact area between the fixing block 411 and the rotor 5 and prevents the rotor 5 from wobbling radially during the adjustment process. The positioning protrusions 231 and 414 are rounded when facing the rotor 5, so as to avoid scratches or deformation of the component surface caused by right angle edges when inserting the commutator 51 gap and the rotor 5 tooth gap.

[0035] The implementation principle of this application embodiment is as follows:

[0036] In actual operation, the rotor 5 is vertically inserted into the mounting base 2, so that the commutator 51 below the rotor 5 is inserted into the positioning hole 21, and the positioning protrusion 231 on the positioning block 23 is inserted into the gap of the commutator 51 to limit the commutator 51 and prevent the commutator 51 from rotating independently when adjusting the angle. The outer circular sidewall of the rotor 5 fits against the inner sidewall of the groove 415 on the fixing block 411, and the positioning protrusion 414 on the positioning block 413 is inserted into the gap between the outer circles of the adjacent teeth of the rotor 5, so that the rotating base 4 can drive the rotor 5 to rotate synchronously when it rotates, and adjust the relative angle between the rotor 5 and the commutator 51. The scale 3 cooperates with the reference line 42 on the rotating base 4 to accurately adjust the angle of the commutator 51. The coaxial rotor 5, mounting base 2 and rotating base 4 ensure the stability and concentricity of the rotor 5 during rotation, maintain the relative position accuracy between the rotor 5 and the commutator 51, avoid adjustment errors caused by eccentricity, and improve the accuracy of angle adjustment.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A motor commutator angle adjustment device, characterized in that: The device includes a base (1), on which a mounting seat (2) for fixing the commutator (51) on the rotor (5) is provided. A scale (3) is provided around the rotor (5) on the mounting seat (2). A rotating seat (4) is rotatably provided on the outside of the mounting seat (2). A fixing frame (41) for fixing the rotor (5) is provided on the top of the rotating seat (4). The rotor (5), the mounting seat (2) and the rotating seat (4) are coaxially arranged. A reference line (42) corresponding to the scale (3) is provided on the upper surface of the rotating seat (4).

2. The motor commutator angle adjustment device according to claim 1, characterized in that: The mounting base (2) has a positioning hole (21) at its center that corresponds to the commutator (51). The inner side wall of the positioning hole (21) has a fixing groove (22). A positioning block (23) is inserted into the fixing groove (22). The positioning block (23) has a positioning protrusion (231) that is inserted into the gap of the commutator (51). The positioning protrusion (231) fits against the gap side wall of the commutator (51).

3. The motor commutator angle adjustment device according to claim 2, characterized in that: The mounting base (2) has a mounting groove (24) at its edge that corresponds to the dial (3). The dial (3) is fixedly connected to the side wall of the mounting groove (24). The dial (3) is lower than the mounting base (2) and flush with the baseline (42) at the top of the rotating base (4).

4. The motor commutator angle adjustment device according to claim 3, characterized in that: The rotating seat (4) has a rotating groove (43) that fits against the outside of the mounting seat (2). The rotating seat (4) has an arc-shaped waist groove (44) at its edge. The base (1) has a fixing hole (11) corresponding to the waist groove (44). A limiting rod (12) corresponding to the waist groove (44) is threaded into the fixing hole (11). A nut (13) that abuts against the rotating seat (4) is threaded onto the top of the limiting rod (12).

5. The motor commutator angle adjustment device according to claim 4, characterized in that: The fixing frame (41) is provided with a fixing block (411). The fixing block (411) has a fixing groove (412) facing the rotor (5). A positioning block (413) is inserted into the fixing groove (412). The positioning block (413) is provided with a positioning protrusion (414) that is inserted into the gap between the outer circle of the tooth plate of the rotor (5). The positioning protrusion (414) is in contact with the side wall of the gap between the outer circle of the tooth plate of the rotor (5).

6. The motor commutator angle adjustment device according to claim 5, characterized in that: The fixing block (411) has a groove (415) on the side facing the rotor (5) that fits against the outer circular sidewall of the rotor (5).

7. The motor commutator angle adjustment device according to claim 5, characterized in that: The positioning protrusions 1 (231) and 2 (414) are positioned with rounded corners facing the rotor (5).

8. The motor commutator angle adjustment device according to claim 7, characterized in that: The positioning protrusion 2 (414) is on the same axis as the baseline (42).

Images