Hall magnetic ring press-in device of brushless motor

Abstract

The utility model discloses a brushless motor Hall magnetic ring press-in device which comprises a base, a stand column and a limiting column, the stand column is connected to the base, and the limiting column is connected to the base. The rotor fixing assembly is used for fixing the rotor; the pressing assembly is used for pressing the Hall magnetic ring into the rotor; the spindle box and the limiting column are switched between combination and separation; a balancing unit; wherein the rotor fixing assembly is arranged on the base, the pressure applying assembly is connected with the spindle box, the spindle box is located above the limiting column, the spindle box is connected with the balance unit, and the balance unit is connected with the stand column. According to the utility model, the convenience and accuracy of installing the Hall magnetic ring on the rotor of the direct current brushless motor by an operator under specific conditions are effectively improved.

Description

Technical Field

[0001] This utility model relates to a presser for Hall effect magnetic rings of brushless DC motors, specifically to a device for pressing Hall effect magnetic rings into brushless motors. Background Technology

[0002] Today, brushless DC motors are widely used in fields such as home appliances, industrial automation, transportation, medical equipment, aerospace, consumer electronics, and high-end manufacturing. With their high reliability, energy efficiency, and precise control, they have become a core power component in modern mechatronics. A crucial component in brushless DC motors is the Hall effect magnetic ring, which functions in position detection and commutation control. The installation of the Hall effect magnetic ring directly affects the commutation accuracy and operational stability of the motor, and its installation must strictly adhere to the principles of mechanical and electromagnetic matching. Incorrect installation can lead to motor start-up jitter and unstable Hall effect signals.

[0003] In routine production line installation, Hall effect magnetic rings are installed using automated, high-precision mechanical equipment to ensure the accuracy and stability of their installation position and angle. However, in special scenarios, such as testing or rework, where high-precision automated equipment cannot be used for Hall effect magnetic ring installation, a simple, effective, and reliable device that is easy to move and operate is required. Conventional simple installation equipment first uses a magnetic pole detector to detect the magnetic pole angle between the rotor and the Hall effect magnetic ring before pressing it in. However, this method has several drawbacks. Due to the inaccuracy of manual detection and deviations caused by human factors during installation, the installation angle cannot reach the optimal ideal angle, resulting in low accuracy of Hall effect magnetic ring installation and cumbersome operation. Utility Model Content

[0004] This invention provides a Hall effect magnetic ring pressing device for brushless motors, which effectively improves the convenience and accuracy of operators installing Hall effect magnetic rings on the rotor of DC brushless motors under specific conditions.

[0005] The technical solutions to the above technical problems are as follows:

[0006] The brushless motor Hall effect magnetic ring pressing device includes a base, a column, and a limiting post, with the column and the limiting post connected to the base; it also includes:

[0007] Rotor fixing assembly for securing the rotor;

[0008] A pressure-applying assembly used to press the Hall magnetic ring into the rotor;

[0009] A spindle box that switches between engagement and disengagement with the limiting post;

[0010] Balance unit;

[0011] The rotor fixing assembly is mounted on the base, the pressure application assembly is connected to the spindle box, the spindle box is located above the limiting column, the spindle box is connected to the balancing unit, and the balancing unit is connected to the column.

[0012] Furthermore, the rotor fixing assembly includes a base plate, a rotor fixing seat, a bearing, and a pneumatic gripper. The base plate is connected to the base and is located on the upper part of the base. The rotor fixing seat is connected to the base plate. The bearing is located inside the base plate and below the rotor fixing seat. The through hole of the bearing communicates with the through hole on the base. The pneumatic gripper is connected to the base and is located on the lower part of the base and around the through hole of the base.

[0013] Furthermore, the pressure application assembly includes a main seat, an indexer, a Hall magnetic ring holder, and a locking plate. The main seat is connected to the spindle box, the indexer is installed at the bottom of the main seat, the Hall magnetic ring holder is connected to the indexer, one end of the locking plate is connected to the main seat, and the other end of the locking plate is engaged with the indexer and the Hall magnetic ring holder respectively.

[0014] Furthermore, the spindle box includes a housing, a rotating shaft, a gear, a handle, and a connecting block. The housing is connected to the pressure application assembly and also to the balancing unit. The gear has a through hole and is located inside the housing. The rotating shaft passes through the through hole on the gear and rotates with the housing. A portion of the rotating shaft is located outside the housing and is connected to the handle. The connecting block is connected to the upper part of the housing.

[0015] Furthermore, the balancing unit includes a sliding component and a rope balancing device. The sliding component is connected to the column and cooperates with the spindle box. The rope balancing device is also connected to the column and cooperates with the spindle box.

[0016] Furthermore, the sliding assembly includes a linear guide, a slider, and a rack. The linear guide is connected to the column, the rack is connected to the column and meshes with the spindle box, the slider is connected to the spindle box, and the slider engages with the linear guide.

[0017] The rope balancing device includes a pulley, a pulley seat, a wire rope, a balancer, and a connecting buckle. The pulley seat is installed on the upper part of the column. The pulley and the pulley seat cooperate with each other. The wire rope and the pulley cooperate with each other. One end of the wire rope is connected to the balancer, and the other end of the wire rope is connected to one end of the connecting buckle. The other end of the connecting buckle is connected to the main shaft box.

[0018] In this invention, in the pressure application assembly, the indexing device connected to the main seat can be adjusted in angle via a knob. The Hall effect magnetic ring fixing seat is connected to the indexing device, and the mounting surface on the inner side of the Hall effect magnetic ring fixing seat has a cylindrical protrusion that matches the cylindrical groove on the surface of the Hall effect magnetic ring, thereby positioning the Hall effect magnetic ring. In the rotor fixing assembly, the rotor fixing seat is a segmented magnetic ring. After the magnetized rotor is placed on the rotor fixing seat, the bearing located at the lower end of the rotor fixing seat adjusts the rotor rotation based on the principle of like poles repelling and unlike poles attracting. This, combined with the rotor fixing seat, fixes the rotor at a relatively fixed angle. Then, the pneumatic grippers located below the base close, further fixing the rotor position. After the Hall effect magnetic ring and rotor are in place, the brushless motor Hall effect magnetic ring pressing device, through the cooperation of the spindle box and the balancing unit, precisely presses the Hall effect magnetic ring into the rotor. This invention has a simple structure, is convenient and safe to use, and has strong functional targeting. It effectively improves the stability of the operator installing the Hall effect magnetic ring on the rotor, and has the advantages of high precision and high efficiency. Attached Figure Description

[0019] Figure 1 This is a 3D view of the Hall effect magnetic ring pressing device for a brushless motor.

[0020] Figure 2 This is a perspective view of the Hall effect magnetic ring pressing device for a brushless motor from another direction.

[0021] Figure 3 This is a three-dimensional view of the base plate and bearings.

[0022] Figure 4 This is a three-dimensional view of the rotor mounting base.

[0023] Figure 5 This is a 3D view of a Hall magnetic ring.

[0024] Figure 6 A three-dimensional view of the Hall magnetic ring holder.

[0025] Rotor A, Hall effect magnetic ring B, groove B1, base 1, column 2, limit post 3, base plate 4, rotor fixing seat 5, bearing 6, pneumatic gripper 7, main seat 8, indexer 9, Hall effect magnetic ring fixing seat 10, mounting seat 10a, sleeve 10b, cylindrical protrusion 10c, notch 10d, locking plate 11, housing 12, rotating shaft 13, gear 14, handle 15, connecting block 16, linear guide rail 17, slider 18, rack 19, pulley 20, pulley seat 21, wire rope 22, balancer 23, connecting buckle 24. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 6As shown, the brushless motor Hall effect magnetic ring pressing device includes a base 1, a column 2, and a limiting post 3. The column 2 is connected to the base 1, and the limiting post 3 is also connected to the base 1. It further includes:

[0028] Rotor fixing assembly for fixing rotor A;

[0029] A pressure-applying assembly used to press the Hall magnetic ring into rotor A;

[0030] The spindle box that switches between engagement and disengagement with the limiting post 3;

[0031] Balance unit;

[0032] The rotor fixing assembly is mounted on the base 1, the pressure application assembly is connected to the spindle box, the spindle box is located above the limiting column 3, the spindle box is connected to the balancing unit, and the balancing unit is connected to the column 2.

[0033] like Figures 1 to 3 As shown, the rotor fixing assembly includes a base plate 4, a rotor fixing seat 5, a bearing 6, and a pneumatic gripper 7. The base 1 has a through hole, and the base plate 4 is fixed to the base 1. The base plate 4 is located on the upper part of the base 1. The rotor fixing seat 5 is a segmented magnetic ring, and the magnetic pole distribution is consistent with that of the magnets on the rotor A. The rotor fixing seat 5 is connected to the base plate 4. The base plate 4 has a mounting hole in the middle. The bearing 6 is located in the mounting hole in the middle of the base plate 4 and is located at the lower part of the rotor fixing seat 5. The through hole on the bearing 6 communicates with the through hole on the base 1. The pneumatic gripper 7 is connected to the base 1 and is located at the lower part of the base 1 and around the through hole of the base 1. In this embodiment, after the magnetized rotor A is placed on the rotor fixing seat 5, the bearing 6 located at the lower end of the rotor fixing seat 5 adjusts the rotor rotation based on the principle of like poles repelling and unlike poles attracting. The rotor fixing seat 5 then fixes the rotor A at a relatively fixed angle. Then, the pneumatic gripper 7 located below the base 1 closes and clamps the rotor shaft in the rotor A, thereby fixing the position of the rotor A.

[0034] like Figures 1 to 2 As shown, the pressure application assembly includes a main seat 8, an indexer 9, a Hall magnetic ring mounting base 10, and a locking plate 11. The main seat 8 is connected to the spindle box by bolts. The indexer 9 is installed at the bottom of the main seat 8. The Hall magnetic ring mounting base 10 is connected to the indexer 9. The indexer 9 is preferably a manual indexer. A manual indexer is a device that can achieve precise angle division and positioning. When the indexer 9 is working, it can drive the Hall magnetic ring mounting base 10 to rotate, thereby causing the Hall magnetic ring B installed on the Hall magnetic ring mounting base 10 to rotate, thereby adjusting the magnetic poles on the Hall magnetic ring B to the position that needs to be pressed.

[0035] The Hall effect magnetic ring fixing seat 10 includes a mounting seat 10a and a sleeve 10b. The mounting seat 10a is connected to the indexer 9, and the sleeve 10b is fixed to the mounting seat 10a. The sleeve 10b has a cylindrical protrusion 10c inside, and the Hall effect magnetic ring B has a groove B1. During installation, the groove B1 on the Hall effect magnetic ring B is fitted with the cylindrical protrusion 10c with a clearance, so that the Hall effect magnetic ring B can be circumferentially positioned. At the same time, an arc-shaped notch 10d is opened on the fixed circumference of the Hall effect magnetic ring fixing seat 10, which facilitates the installation or removal of the Hall effect magnetic ring B. One end of the locking plate 11 is connected to the main seat 8, and the bottom of the locking plate 11 is provided with a locking screw. The screw is threadedly connected to the locking plate 11. When the other end of the locking plate 11 abuts against the Hall effect magnetic ring fixing seat 10 through the screw, the Hall effect magnetic ring fixing seat 10 cannot rotate circumferentially.

[0036] like Figures 1 to 2 As shown, the spindle box includes a housing 12, a rotating shaft 13, a gear 14, a handle 15, and a connecting block 16. The housing 12 and the limiting post 3 can switch between being engaged or disengaged. One end of the housing 12 is connected to the main seat 8 by bolts, and the other end of the housing 12 is connected to the balancing unit. A nylon block for impact protection is installed on the lower surface of the housing 12 to prevent damage when the housing 12 is engaged with the limiting post 3.

[0037] Gear 14 has a through hole and is located inside housing 12. Shaft 13 passes through the through hole in gear 14 and rotatably engages with housing 12. A portion of shaft 13 is located outside housing 12 and connected to handle 15. Connecting block 16 is connected to the upper part of housing 12. In this embodiment, the handle 15 and shaft 13 are connected in a square shaft and square hole configuration; that is, the connection point between shaft 13 and handle 15 is square, and the connection point is also square. A threaded hole is provided at the end of handle 15, and a screw is threaded into the threaded hole and handle 15 to lock handle 15 and shaft 13 together.

[0038] like Figures 1 to 2 As shown, the balancing unit includes a sliding component and a rope balancing device. The sliding component is connected to the column 2 and cooperates with the spindle box. The rope balancing device is also connected to the column 2 and cooperates with the spindle box.

[0039] like Figures 1 to 2 As shown, the sliding assembly includes linear guide rails 17, sliders 18, and racks 19. Two linear guide rails 17 are spaced apart on the column 2 and are fixed to the column 2. The rack 19 is located in the middle of the two linear guide rails 17 and is parallel to the two linear guide rails 17. The rack 19 is fixed to the column 2 and meshes with the gear 14 in the spindle box. The slider 18 is connected to the housing 12 in the spindle box and slides with the two linear guide rails 17.

[0040] like Figures 1 to 2 As shown, the rope balancing device includes a pulley 20, a pulley seat 21, a wire rope 22, a balancer 23, and a connecting buckle 24. The pulley seat 21 is installed on the upper part of the column 2, and the pulley 20 is installed on the pulley seat 21. The pulley 20 and the pulley seat 21 are dynamically engaged, and the wire rope 22 is slidably engaged with the pulley 20. One end of the wire rope 22 is connected to the balancer 23, and the other end of the wire rope is connected to one end of the connecting buckle 24. The other end of the connecting buckle 24 is connected to the connecting block 16 in the spindle box. The balancer 23 is fixed to the back of the column 2.

[0041] The working process of this utility model is as follows:

[0042] First, the magnetized rotor A is placed on the rotor mounting seat 5 in the rotor fixing assembly. The rotor shaft of rotor A passes through the rotor mounting seat 5 and the bearing 6 in sequence. Since the rotor mounting seat 5 is a segmented magnetic ring and its magnetic pole distribution is consistent with that of the magnets on rotor A, rotor A will rotate (like poles repel each other, unlike poles attract each other) until it stabilizes at a relatively constant angular position. At this time, the pneumatic gripper 7 located below the base 1 is opened, and the pneumatic gripper 7 clamps the rotor shaft, locking the rotor shaft extending below the base 1, thereby further positioning the angle and position of rotor A. Then, the Hall magnetic ring B is installed into the Hall magnetic ring mounting seat 10. Since the mounting surface on the inner side of the Hall magnetic ring mounting seat 10 has a cylindrical protrusion 10c that matches the cylindrical protrusion 10c on the Hall magnetic ring B, the Hall magnetic ring B can be positioned. Since the Hall magnetic ring B is magnetized, it can be magnetically attracted into the cavity of the Hall magnetic ring mounting seat 10. Then, the height of the limiting post 3 on the base 1 is adjusted according to the pressing height of the Hall magnetic ring B. At this point, based on the magnetic pole distribution of the magnets in the bottom rotor A and the magnetic pole distribution of the Hall magnetic ring B, manually operate the indexer 9 to rotate the Hall magnetic ring fixing seat 10, thereby rotating the Hall magnetic ring B installed in the Hall magnetic ring fixing seat 10 until the Hall magnetic ring B reaches the required pressing angle. Then, the Hall magnetic ring fixing seat 10 is circumferentially locked by the set screw on the locking plate 11. Turn the handle 15 to lower the spindle box, thereby lowering the Hall magnetic ring B and pressing the Hall magnetic ring B into the rotor A. Then release the handle 15, and the spindle box returns to its original position under the action of the balancing unit. Finally, remove the pressed rotor A.

Claims

1. A device for pressing a Hall magnetic ring into a brushless motor, characterized in that, Includes a base (1), a column (2), and a limiting column (3), with the column (2) connected to the base (1) and the limiting column (3) connected to the base (1); also includes: Rotor fixing assembly for fixing rotor (A); A pressure-applying assembly used to press the Hall magnetic ring into the rotor (A); A spindle box that switches between engagement and disengagement with the limiting post (3); Balance unit; The rotor fixing assembly is set on the base (1), the pressure assembly is connected to the spindle box, the spindle box is located above the limit column (3), the spindle box is connected to the balance unit, and the balance unit is connected to the column (2).

2. The brushless motor Hall magnet ring press-in device of claim 1, wherein, The rotor fixing assembly includes a base plate (4), a rotor fixing seat (5), a bearing (6), and a pneumatic gripper (7). The base (1) has a through hole. The base plate (4) is connected to the base (1) and is located on the upper part of the base (1). The rotor fixing seat (5) is connected to the base plate (4). The bearing (6) is located inside the base plate (4) and below the rotor fixing seat (5). The through hole of the bearing (6) communicates with the through hole on the base (1). The pneumatic gripper (7) is connected to the base (1) and is located on the lower part of the base (1) and around the through hole of the base (1).

3. The brushless motor Hall magnet ring press-in device of claim 1, wherein, The pressure application assembly includes a main seat (8), an indexer (9), a Hall magnetic ring holder (10), and a locking plate (11). The main seat (8) is connected to the spindle box. The indexer (9) is installed at the bottom of the main seat (8). The Hall magnetic ring holder (10) is connected to the indexer (9). One end of the locking plate (11) is connected to the main seat (8), and the other end of the locking plate (11) is engaged with the indexer (9) and the Hall magnetic ring holder (10) respectively.

4. The brushless motor Hall magnet ring press-in device of claim 1, wherein, The spindle box includes a housing (12), a rotating shaft (13), a gear (14), a handle (15), and a connecting block (16). The housing (12) is connected to the pressure application component and is also connected to the balancing unit. The gear (14) has a through hole and is located inside the housing (12). The rotating shaft (13) passes through the through hole on the gear (14) and rotates with the housing (12). A part of the rotating shaft (13) is located outside the housing (12) and is connected to the handle (15). The connecting block (16) is connected to the upper part of the housing (12).

5. The brushless motor Hall magnet ring press-in device of claim 1, wherein, The balancing unit includes a sliding component and a rope balancing device. The sliding component is connected to the column (2) and cooperates with the spindle box. The rope balancing device is also connected to the column (2) and cooperates with the spindle box.

6. The brushless motor Hall magnet ring press-in device of claim 5, wherein, The sliding assembly includes a linear guide (17), a slider (18), and a rack (19). The linear guide (17) is connected to the column (2), the rack (19) is connected to the column (2), and the rack (19) meshes with the spindle box. The slider (18) is connected to the spindle box and engages with the linear guide (17).

7. The brushless motor Hall magnet ring press-in device of claim 5, wherein, The rope balancing device includes a pulley (20), a pulley seat (21), a wire rope (22), a balancer (23), and a connecting buckle (24). The pulley seat (21) is installed on the upper part of the column (2). The pulley (20) cooperates with the pulley seat (21), and the wire rope (22) cooperates with the pulley (20). One end of the wire rope (22) is connected to the balancer (23), and the other end of the wire rope (22) is connected to one end of the connecting buckle (24). The other end of the connecting buckle (24) is connected to the main shaft box.

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