Coreless motor with high protective property

Abstract

The utility model relates to the technical field of coreless motors, and discloses a coreless motor with high protective performance, which comprises a protective shell, the protective shell is in a circular barrel shape with one end open, a fixed permanent magnet is arranged in the protective shell, a rotating coil is arranged in the protective shell corresponding to the outer side of the permanent magnet, the rotating coil is in a circular barrel shape, and the permanent magnet is arranged in the protective shell. An output shaft is fixedly installed on the inner end face of the rotating coil. According to the utility model, force is applied to the pressing structure by extruding the locking structure, so that the pressing structure applies force to the extruding plate, and then the carbon brush is extruded by the extruding plate, so that the carbon brush is always attached to the commutator; when the motor runs, the extrusion plate can be moved again by extruding the locking structure, so that the most suitable force is always kept between the carbon brush and the commutator to keep stable jumping, and the motor can work normally and stably.

Description

Technical Field

[0001] This utility model relates to the field of hollow cup motor technology, and in particular to a highly protective hollow cup motor. Background Technology

[0002] Coreless motors are DC permanent magnet servo and control motors. They possess outstanding energy-saving characteristics, sensitive and convenient control characteristics, and stable operation characteristics, demonstrating significant technological advancement. They are highly efficient energy conversion devices. To ensure good protection during use, the outer casing of coreless motors is typically made of metal, effectively extending their service life. Carbon brushes are used as conductive materials to further extend their lifespan. Current technology usually uses a metal spring to press the carbon brush against the commutator. However, as the carbon brushes wear down, the force exerted by the metal spring decreases, affecting the contact between the brush and the commutator, leading to increased vibration and impacting the stability of the motor's normal operation. Therefore, we propose a highly protective coreless motor. Utility Model Content

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a highly protective hollow cup motor.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a highly protective hollow cup motor, comprising a protective shell, the protective shell being a circular barrel shape with one open end, a fixed permanent magnet being disposed inside the protective shell, a rotating coil being disposed inside the protective shell corresponding to the outer side of the permanent magnet, the rotating coil being a circular barrel shape, an output shaft being fixedly installed on the inner end face of the rotating coil, the output shaft extending through the end face of the protective shell to the outer side of the protective shell, a commutator being fixedly installed on the end face of the rotating coil, an end cap being disposed at the opening of the protective shell, a skirt being fixedly installed on the end face of the end cap corresponding to the outer side of the protective shell, a movable extrusion plate being disposed inside the protective shell corresponding to the outer side of the commutator, a carbon brush being fixedly installed on the side of the extrusion plate corresponding to the commutator, a pressing structure being disposed at the end of the extrusion plate away from the carbon brush, and an extrusion locking structure being disposed inside the protective shell corresponding to the extrusion structure, the protective shell and the skirt being fixed by the extrusion locking structure.

[0005] Preferably, the pressing plate has a first mounting cavity on the side away from the carbon brush, and the pressing structure includes a first rotating column movably installed inside the first mounting cavity. Both ends of the first rotating column are fixedly installed with torsion springs, and the end of the torsion spring away from the first rotating column is fixedly installed on the end face of the first mounting cavity. A movable plate is fixedly connected to the outside of the first rotating column.

[0006] Preferably, the end cap has a second mounting cavity at the position corresponding to the extrusion plate. A wire connecting block is fixedly installed inside the second mounting cavity. A second rotating column is rotatably connected inside the wire connecting block. The end of the second rotating column away from the wire connecting block is fixedly installed on the side of the extrusion plate.

[0007] Preferably, the side of the skirt is provided with a second threaded hole, and the side of the protective shell is provided with a first threaded hole at the position corresponding to the second threaded hole. The first threaded hole and the second threaded hole are internally threaded with locking threaded posts, one end of which extends to the side of the movable plate.

[0008] Preferably, the outer thread of the locking threaded post is connected to a locking ball, which is a hollow sphere.

[0009] Preferably, the end face of the protective shell is provided with heat dissipation holes, which are circular holes and are equidistantly distributed around the circumference at one end of the protective shell.

[0010] Beneficial effects

[0011] This invention provides a highly protective hollow cup motor. It has the following beneficial effects:

[0012] (1) This high-protection hollow cup motor applies force to the pressing structure through the compression locking structure, so that the pressing structure applies force to the compression plate, and then the compression plate compresses the carbon brush, so that the carbon brush is always attached to the commutator. After a period of use, when the carbon brush begins to wear out, the compression locking structure can be used again to move the compression plate, so that the carbon brush and the commutator always maintain the most suitable force, so as to maintain a stable jump and enable the motor to work normally and stably. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial sectional view of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0019] Figure 5 This utility model Figure 2 Enlarged structural diagram at point C.

[0020] Legend:

[0021] 1. Protective shell; 2. Rotating coil; 3. Output shaft; 4. Permanent magnet; 5. Commutator; 6. End cover; 7. Skirt; 8. Extrusion plate; 9. Carbon brush; 10. First mounting cavity; 11. First rotating column; 12. Torsion spring; 13. Movable plate; 14. First threaded hole; 15. Second threaded hole; 16. Locking threaded column; 17. Locking ball; 18. Second mounting cavity; 19. Wire connecting block; 20. Second rotating column; 21. Heat dissipation hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-5As shown, a highly protective hollow cup motor includes a protective shell 1. The end face of the protective shell 1 has heat dissipation holes 21, which are circular holes equidistantly distributed circumferentially at one end of the protective shell 1 to accelerate heat dissipation. The protective shell 1 is a circular barrel shape with one open end. A fixed permanent magnet 4 is disposed inside the protective shell 1. A rotating coil 2 is disposed inside the protective shell 1, corresponding to the outer side of the permanent magnet 4. The rotating coil 2 is also circular barrel-shaped. An output shaft 3 is fixedly installed on the inner end face of the rotating coil 2, and the output shaft 3 passes through the protective shell. The end face of the protective shell 1 extends to the outside of the protective shell 1. A commutator 5 is fixedly installed on the end face of the rotating coil 2. An end cover 6 is provided at the opening of the protective shell 1. A skirt 7 is fixedly installed on the end face of the end cover 6 corresponding to the outside of the protective shell 1. A movable extrusion plate 8 is provided inside the protective shell 1 corresponding to the outside of the commutator 5. A carbon brush 9 is fixedly installed on the side of the extrusion plate 8 corresponding to the commutator 5. A pressing structure is provided at the end of the extrusion plate 8 away from the carbon brush 9. A first mounting cavity 10 is opened on the side of the extrusion plate 8 away from the carbon brush 9. The pressing structure includes a movable mounting cavity 10 in the first mounting cavity 10. Inside cavity 10, a first rotating column 11 is mounted. Both ends of the first rotating column 11 are fixedly fitted with torsion springs 12. The end of the torsion spring 12 furthest from the first rotating column 11 is fixedly mounted on the end face of the first mounting cavity 10. A movable plate 13 is fixedly connected to the outside of the first rotating column 11. The movable plate 13 rotates inside the first rotating column 11, constrained by the torsion springs 12. When the movable plate 13 rotates, it further compresses the extrusion plate 8, facilitating adjustment of the pressure exerted by the extrusion plate 8 and carbon brush 9 on the commutator 5. The interior of the protective shell 1 corresponds to the extrusion structure. The device is equipped with a compression locking structure. The protective shell 1 and the skirt 7 are fixed by the compression locking structure. During use, the compression locking structure applies force to the pressing structure, which in turn applies force to the compression plate 8. The compression plate 8 then compresses the carbon brush 9, ensuring that the carbon brush 9 remains in contact with the commutator 5. After a period of use, when the carbon brush 9 begins to wear out, the compression locking structure can be used again to move the compression plate 8, ensuring that the carbon brush 9 and the commutator 5 always maintain an optimal force, thus improving the stability of use.

[0024] The end cap 6 has a second mounting cavity 18 at the position corresponding to the extrusion plate 8. A wire connecting block 19 is fixedly installed inside the second mounting cavity 18. A second rotating column 20 is rotatably connected inside the wire connecting block 19. The end of the second rotating column 20 away from the wire connecting block 19 is fixedly installed on the side of the extrusion plate 8. The extrusion plate 8 swings on the wire connecting block 19 through the second rotating column 20. The current input end is connected to the wire connecting block 19. The current is transmitted to the commutator 5 through the wire connecting block 19, the second rotating column 20, the extrusion plate 8 and the carbon brush 9.

[0025] A second threaded hole 15 is provided on the side of the skirt 7, and a first threaded hole 14 is provided on the side of the protective shell 1 corresponding to the position of the second threaded hole 15. The first threaded hole 14 and the second threaded hole 15 are internally threaded to a locking threaded post 16. One end of the locking threaded post 16 extends to the side of the movable plate 13. When the locking threaded post 16 is rotated, it passes through the interior of the first threaded hole 14 and the second threaded hole 15 to constrain the protective shell 1 and the skirt 7. The locking threaded post 16 continues to move to the side of the movable plate 13 and squeezes the movable plate 13. A locking ball 17 is threaded to the outside of the locking threaded post 16. The locking ball 17 is a hollow sphere. When the locking ball 17 is rotated, it abuts against the outside of the skirt 7 to lock the locking threaded post 16.

[0026] The working principle of this utility model:

[0027] During use, the pressing mechanism is applied to the pressing structure through a squeezing and locking structure, which in turn applies force to the squeezing plate 8. The squeezing plate 8 then squeezes the carbon brush 9, ensuring it remains in contact with the commutator 5. After a period of use, when the carbon brush 9 begins to wear down, the squeezing plate 8 can be moved again using the squeezing and locking structure to maintain an optimal force between the carbon brush 9 and the commutator 5, improving stability. The movable plate 13, when rotating inside the first rotating column 11, is constrained by the torsion spring 12. During rotation, the movable plate 13 further squeezes the squeezing plate 8, facilitating adjustment of the squeezing plate 8 and carbon brush 9 relative to the commutator. The pressure of the pressure plate 8 is adjusted so that the extrusion plate 8 swings on the wire connection block 19 via the second rotating column 20. The current input end is connected to the wire connection block 19. The current is transmitted to the commutator 5 through the wire connection block 19, the second rotating column 20, the extrusion plate 8 and the carbon brush 9. The locking threaded column 16 is rotated. When the locking threaded column 16 passes through the interior of the first threaded hole 14 and the second threaded hole 15, it constrains the protective shell 1 and the skirt 7. The locking threaded column 16 continues to move to the side of the movable plate 13 and squeezes the movable plate 13. The locking ball 17 is rotated. The locking ball 17 abuts against the outer side of the skirt 7 to lock the locking threaded column 16. Heat dissipation is accelerated through the heat dissipation hole 21.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A highly protective hollow cup motor, comprising a protective shell (1), the protective shell (1) being a circular barrel shape with one open end, a fixed permanent magnet (4) being disposed inside the protective shell (1), and a rotating coil (2) being disposed inside the protective shell (1) corresponding to the outer side of the permanent magnet (4), the rotating coil (2) being a circular barrel shape, an output shaft (3) being fixedly mounted on the inner end face of the rotating coil (2), the output shaft (3) extending through the end face of the protective shell (1) to the outer side of the protective shell (1), characterized in that: A commutator (5) is fixedly installed on the end face of the rotating coil (2). An end cap (6) is provided at the opening of the protective shell (1). A skirt (7) is fixedly installed on the end face of the end cap (6) corresponding to the outer side of the protective shell (1). A movable extrusion plate (8) is provided inside the protective shell (1) corresponding to the outer side of the commutator (5). A carbon brush (9) is fixedly installed on one side of the extrusion plate (8) corresponding to the commutator (5). A pressing structure is provided at the end of the extrusion plate (8) away from the carbon brush (9). A compression locking structure is provided inside the protective shell (1) corresponding to the position of the extrusion structure. The protective shell (1) and the skirt (7) are fixed by the compression locking structure.

2. The high-protection hollow cup motor according to claim 1, characterized in that: The pressing plate (8) has a first mounting cavity (10) on the side away from the carbon brush (9). The pressing structure includes a first rotating column (11) movably installed inside the first mounting cavity (10). Both ends of the first rotating column (11) are fixedly installed with torsion springs (12). The end of the torsion spring (12) away from the first rotating column (11) is fixedly installed on the end face of the first mounting cavity (10). A movable plate (13) is fixedly connected to the outside of the first rotating column (11).

3. A highly protective hollow cup motor according to claim 1, characterized in that: The end cap (6) has a second mounting cavity (18) at the position corresponding to the extrusion plate (8). A wire connecting block (19) is fixedly installed inside the second mounting cavity (18). A second rotating column (20) is rotatably connected inside the wire connecting block (19). The end of the second rotating column (20) away from the wire connecting block (19) is fixedly installed on the side of the extrusion plate (8).

4. A highly protective hollow cup motor according to claim 2, characterized in that: The side of the skirt (7) is provided with a second threaded hole (15), and the side of the protective shell (1) is provided with a first threaded hole (14) corresponding to the position of the second threaded hole (15). The first threaded hole (14) and the second threaded hole (15) are connected by a locking threaded post (16), and one end of the locking threaded post (16) extends to the side of the movable plate (13).

5. A highly protective hollow cup motor according to claim 4, characterized in that: The locking threaded post (16) has a locking ball (17) threaded on its outer side. The locking ball (17) is a hollow sphere.

6. A highly protective hollow cup motor according to claim 1, characterized in that: The protective shell (1) has heat dissipation holes (21) on its end face. The heat dissipation holes (21) are circular holes and are equidistantly distributed around one end of the protective shell (1).

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