Motor

Abstract

The invention relates to the field of motors, in particular to a motor which comprises a motor shell, two permanent magnets are fixedly connected to the interior of the motor shell, an output shaft is rotatably connected to the interior of the motor shell, a rotor is fixedly connected to the output shaft, a plurality of rotor windings are arranged on the rotor, a commutator is fixedly connected to each rotor winding, and the commutator is fixedly connected to the motor shell. Two electric brushes are arranged on the outer sides of the plurality of commutators, and the commutators are trapezoidal arc commutators; the commutator is a one-step arc commutator, a two-step arc commutator or a three-step arc commutator. Two sliding blocks are connected to the motor shell in a sliding mode, the two electric brushes are fixedly connected to the two sliding blocks respectively, and the sliding blocks can slide on the motor shell to drive the two electric brushes to slide and make contact with different numbers of commutators. And the number of the power connection rotor windings can be adjusted according to different use requirements, so that different power output requirements are met.

Description

Technical Field

[0001] This invention relates to the field of electric motors, and more specifically to an electric motor. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It uses an energized coil to generate a rotating magnetic field, which acts on the rotor to form a magnetoelectric torque. For example, patent number CN207339443U, entitled "A Novel Installation Structure for an External Rotor Motor," discloses a technical solution to improve the utilization rate of the motor rotor core while ensuring mechanical strength. However, the disadvantage of this patent is that it cannot adjust the number of energized rotor windings according to different usage requirements, thereby meeting different power output needs. Summary of the Invention

[0003] The purpose of this invention is to provide a motor that can adjust the number of energized rotor windings according to different usage requirements, thereby meeting different power output needs.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] An electric motor includes a motor housing, with two permanent magnets fixedly connected inside the motor housing. An output shaft is rotatably connected inside the motor housing, and a rotor is fixedly connected to the output shaft. Multiple rotor windings are provided on the rotor, and a commutator is fixedly connected to each rotor winding. Two brushes are provided on the outside of the multiple commutators. The commutator is a trapezoidal arc commutator.

[0006] The commutator is a single-step circular arc commutator, a two-step circular arc commutator, or a three-step circular arc commutator.

[0007] There are two three-step circular arc commutators, two two-step circular arc commutators, and four one-step circular arc commutators.

[0008] Two sliders are slidably connected to the motor housing, and two brushes are fixedly connected to the two sliders respectively. The sliders can slide on the motor housing, driving the two brushes to slide and contact different numbers of commutators.

[0009] Two lead screws are rotatably connected to the motor housing, and two sliders are respectively threaded onto the two lead screws;

[0010] The trapezoidal arc commutator is formed using a stamping device;

[0011] The stamping device includes a device support, on which two feeding rollers are rotatably connected, and a forming mold is fixedly connected in the middle of the device support.

[0012] A telescopic mechanism is fixedly connected to the device support, a lifting bracket is fixedly connected to the telescopic end of the telescopic mechanism, and a stamping die is fixedly connected to the lifting bracket.

[0013] The stamping die can enter the forming die, and the lower ends of both the stamping die and the forming die are rounded.

[0014] The device support is rotatably connected to a material ejector roller, which is located on the lower side of the forming mold. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the motor structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the motor cross-section structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the motor housing structure of the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of the motor housing of the present invention;

[0020] Figure 5 This is a schematic diagram of the output shaft structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the rotor structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the rotor winding structure of the present invention;

[0023] Figure 8 This is a schematic diagram of the rotor winding structure of the present invention;

[0024] Figure 9 This is a schematic diagram of the rotor winding structure of the present invention;

[0025] Figure 10 This is a schematic diagram of the rotor winding structure of the present invention;

[0026] Figure 11 This is a schematic diagram of the stamping device structure of the present invention;

[0027] Figure 12 This is a schematic diagram of the stamping device structure of the present invention;

[0028] Figure 13 This is a schematic diagram of the stamping device structure of the present invention;

[0029] Figure 14 This is a schematic diagram of the lifting support structure of the present invention.

[0030] In the picture:

[0031] 11. Motor housing; 12. Permanent magnet;

[0032] 21. Lead screw; 22. Slider; 23. Brush;

[0033] Output shaft 31; Rotor 32;

[0034] Rotor winding 41; commutator 42;

[0035] Device support 51; feeding roller 52; forming mold 53;

[0036] Telescopic mechanism 61; Lifting bracket 62; Stamping die 63;

[0037] 70mm unloading roller. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings.

[0039] like Figures 1 to 10 As shown, in order to solve the technical problem of "", a motor is designed. The structure and function of the motor are described in detail below.

[0040] An electric motor includes a motor housing 11. Two permanent magnets 12 are fixedly connected inside the motor housing 11. An output shaft 31 is rotatably connected inside the motor housing 11. A rotor 32 is fixedly connected to the output shaft 31. Multiple rotor windings 41 are provided on the rotor 32. A commutator 42 is fixedly connected to each rotor winding 41. Two brushes 23 are provided on the outer side of the multiple commutators 42. The commutator 42 is a trapezoidal arc commutator.

[0041] The commutator 42 is a single-step circular arc commutator, a two-step circular arc commutator, or a three-step circular arc commutator.

[0042] There are two three-step circular arc commutators, two two-step circular arc commutators, and four one-step circular arc commutators.

[0043] Two sliders 22 are slidably connected to the motor housing 11, and two brushes 23 are fixedly connected to the two sliders 22 respectively. The sliders 22 can slide on the motor housing 11, driving the two brushes 23 to slide and contact different numbers of commutators 42.

[0044] Two lead screws 21 are rotatably connected to the motor housing 11, and two sliders 22 are respectively threaded to the two lead screws 21;

[0045] When using, such as Figures 8 to 10As shown, the three-step circular arc commutator has three circular arc contact positions. When the brush 23 moves laterally, the brush 23 can contact the three circular arc contact positions on the three-step circular arc commutator. When the brush 23 is at the first circular arc contact position on the three-step circular arc commutator, the brush 23 can contact the two three-step circular arc commutators.

[0046] The two-step circular arc commutator has two circular arc contact positions. The first circular arc contact position of the two-step circular arc commutator and the second circular arc contact position of the three-step circular arc commutator are in the same plane. When the brush 23 moves laterally, the brush 23 can contact the two circular arc contact positions on the two-step circular arc commutator. When the brush 23 is at the second circular arc contact position on the three-step circular arc commutator, it can also contact the first circular arc contact position of the two-step circular arc commutator. Therefore, when the brush 23 moves to the second circular arc contact position on the three-step circular arc commutator, it will contact two three-step circular arc commutators and two two-step circular arc commutators, thereby adjusting the number of energized rotor windings 41.

[0047] The first-step circular arc commutator has one circular arc contact position. The first circular arc contact position of the first-step circular arc commutator and the third circular arc contact position of the third-step circular arc commutator are in the same plane. The first circular arc contact position of the first-step circular arc commutator and the second circular arc contact position of the second-step circular arc commutator are in the same plane. When the brush 23 moves laterally, the brush 23 can contact one circular arc contact position on the first-step circular arc commutator. When the brush 23 is at the third circular arc contact position on the third-step circular arc commutator, it can contact the second circular arc contact position of the second-step circular arc commutator and also contact the first circular arc contact position of the first-step circular arc commutator. Therefore, when the brush 23 moves to the third circular arc contact position on the third-step circular arc commutator, it will contact two third-step circular arc commutators, two second-step circular arc commutators, and four first-step circular arc commutators, thereby adjusting the number of energized rotor windings 41.

[0048] Furthermore, trapezoidal arc commutators can be configured with multiple stages according to different usage requirements, such as four-stage trapezoidal arc commutators, to meet different usage needs.

[0049] Furthermore, when it is necessary to push the slider 22 to move horizontally, the lead screw 21 is rotated. When the lead screw 21 rotates, it drives the slider 22 to move through the thread, so that the slider 22 slides on the motor housing 11. The slider 22 drives the brush 23 to move, thereby adjusting the position of the brush 23. The brush 23 is pre-connected to an external power source.

[0050] like Figures 11 to 14As shown, due to the special shape of the trapezoidal arc commutator, a stamping device is designed to specifically process the trapezoidal arc commutator. The structure and function of the stamping device are described in detail below.

[0051] The trapezoidal arc commutator is formed using a stamping device;

[0052] The stamping device includes a device support 51, on which two feeding rollers 52 are rotatably connected, and a forming mold 53 is fixedly connected to the middle of the device support 51.

[0053] A telescopic mechanism 61 is fixedly connected to the device bracket 51, a lifting bracket 62 is fixedly connected to the telescopic end of the telescopic mechanism 61, and a stamping die 63 is fixedly connected to the lifting bracket 62.

[0054] The stamping die 63 can enter the forming die 53, and the lower ends of both the stamping die 63 and the forming die 53 are rounded.

[0055] A material ejector roller 70 is rotatably connected to the device support 51, and the material ejector roller 70 is located on the lower side of the forming mold 53;

[0056] In use, the material plate of the trapezoidal arc commutator is placed on the device bracket 51, and the plate is placed on the lower side of the feeding roller 52. The device bracket 51 is fixedly connected to the power mechanism I that drives the feeding roller 52 to rotate. The power mechanism I is preferably a servo motor. The output shaft of the power mechanism I drives the feeding roller 52 to rotate. When the feeding roller 52 rotates, it drives the plate to move, so that the plate enters between the forming mold 53 and the stamping mold 63.

[0057] like Figure 12 and 14 As shown, both the forming mold 53 and the stamping mold 63 are stepped. When the telescopic mechanism 61 is activated, the telescopic mechanism 61 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism 61 drives the lifting bracket 62 to move. The lifting bracket 62 moves downward, and the lifting bracket 62 drives the stamping mold 63 to move downward, so that the stamping mold 63 cuts and stamps the sheet metal. The cut sheet metal enters the forming mold 53.

[0058] The cut sheet metal moves downward under the pressure of the stamping die 63. The stamping die 63 pushes the sheet metal downward to contact the ejector roller 70. The lower end of the stamping die 63 is rounded. The stamping die 63 and the ejector roller 70 then press the sheet metal, causing the cut sheet metal to be pressed into a rounded shape, thus forming a trapezoidal rounded commutator.

[0059] Furthermore, a power mechanism II for driving the ejector roller 70 to rotate is fixedly connected to the device bracket 51. The power mechanism II is preferably a servo motor. The output shaft of the power mechanism II drives the ejector roller 70 to rotate. When the ejector roller 70 rotates, the trapezoidal arc commutator slides off it. A gap is provided between the ejector roller 70 and the lower end of the forming mold 53 to ensure that the trapezoidal arc commutator can slide off the gap.

Claims

1. An electric motor, comprising a motor housing (11), characterized in that: Two permanent magnets (12) are fixedly connected inside the motor housing (11). An output shaft (31) is rotatably connected inside the motor housing (11). A rotor (32) is fixedly connected to the output shaft (31). Multiple rotor windings (41) are provided on the rotor (32). A commutator (42) is fixedly connected to each rotor winding (41). Two brushes (23) are provided on the outside of the multiple commutators (42). The commutator (42) is a trapezoidal arc commutator.

2. The motor according to claim 1, characterized in that: The commutator (42) is a single-step circular arc commutator, a double-step circular arc commutator, or a triple-step circular arc commutator.

3. The motor according to claim 2, characterized in that: There are two three-step circular arc commutators, two two-step circular arc commutators, and four one-step circular arc commutators.

4. The motor according to claim 1, characterized in that: Two sliders (22) are slidably connected to the motor housing (11), and two brushes (23) are fixedly connected to the two sliders (22). The sliders (22) can slide on the motor housing (11) to drive the two brushes (23) to slide and contact different numbers of commutators (42).

5. The motor according to claim 4, characterized in that: Two lead screws (21) are rotatably connected to the motor housing (11), and two sliders (22) are respectively threaded onto the two lead screws (21).

6. The motor according to claim 1, characterized in that: The trapezoidal circular arc commutator is formed using a stamping device.

7. The motor according to claim 6, characterized in that: The stamping device includes a device support (51), on which two feeding rollers (52) are rotatably connected, and a forming mold (53) is fixedly connected in the middle of the device support (51).

8. The motor according to claim 6, characterized in that: A telescopic mechanism (61) is fixedly connected to the device bracket (51), a lifting bracket (62) is fixedly connected to the telescopic end of the telescopic mechanism (61), and a stamping die (63) is fixedly connected to the lifting bracket (62).

9. The motor according to claim 7, characterized in that: The stamping die (63) can enter the forming die (53), and the lower ends of both the stamping die (63) and the forming die (53) are rounded.

10. The motor according to claim 9, characterized in that: A material ejector roller (70) is rotatably connected to the device support (51), and the material ejector roller (70) is located on the lower side of the forming mold (53).

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