Brushless motor with stably installed magnet

Abstract

The utility model provides a brushless motor with stably installed magnets, and belongs to the technical field of brushless motors. The problem that in the prior art, a rotor cannot fix block-shaped permanent magnets is solved. The permanent magnet motor comprises a stator shell, a rotor shell and a motor shaft, the rotor shell is fixedly mounted in the stator shell, a stator end cover is fixedly mounted at the end of the stator shell, a plurality of through mounting holes are formed in the rotor shell, permanent magnets are fixedly mounted in the mounting holes, alloy columns are arranged in the middles of the permanent magnets, and two ends of each permanent magnet extend out of the mounting holes. Rotor end covers are fixedly installed at the two ends of the rotor shell, a through shaft hole is formed in the center of the rotor shell, one end of the motor shaft penetrates through the shaft hole and is connected with the bottom of the stator shell, a plurality of containing grooves are formed in the outer edge in the stator shell, coil assemblies are fixedly installed in the containing grooves, and installation grooves are formed in the corresponding positions of the stator end covers. And the upper end part of the coil assembly is connected with the mounting groove. The permanent magnet motor has the advantages of stable permanent magnet installation and compact and stable structure.

Description

Technical Field

[0001] This utility model belongs to the field of brushless motor technology and relates to a brushless motor with magnet-stabilized mounting. Background Technology

[0002] Brushless motors use electronic commutation instead of the mechanical commutation of traditional brushed motors, and are widely used in equipment such as industrial robots, CNC machine tools, and automated production lines, providing precise power control for the equipment.

[0003] Chinese patent publication number CN204156618U discloses a brushless motor, including a rotor and a stator disposed outside the rotor. The stator includes a housing, a stator core disposed inside the housing, a core winding wound around the stator core, and an end cap installed at the open end of the housing. The rotor includes a rotating shaft rotatably connected to the stator, a rotor core fixedly mounted on the rotating shaft, and permanent magnetic poles fixedly mounted on the outer circumference of the rotor core and surrounding the inner side of the stator core. The stator core includes an annular yoke and a toothed portion extending inward from the yoke and wound with the core winding, the toothed portion being spliced ​​with the yoke.

[0004] The patent provides a brushless motor in which permanent magnetic poles are fixed by winding, but the rotor of this structure cannot be used to fix block magnets. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a brushless motor with a magnet-stabilized mounting.

[0006] The objective of this utility model can be achieved through the following technical solution: A brushless motor with magnet-stabilized mounting includes a stator housing, a rotor housing, and a motor shaft. The rotor housing is fixedly mounted inside the stator housing. A stator end cover is fixedly mounted at the end of the stator housing. Several through mounting holes are opened inside the rotor housing. A permanent magnet is fixedly mounted in each mounting hole. The permanent magnet has an alloy column in the middle and both ends protrude from the mounting holes. Rotor end covers are fixedly mounted at both ends of the rotor housing. A through shaft hole is opened at the center of the rotor housing. One end of the motor shaft passes through the shaft hole and connects to the bottom of the stator housing. Several placement slots are opened along the outer edge of the inside of the stator housing. Coil assemblies are fixedly mounted in each placement slot. A corresponding mounting slot is opened at the stator end cover. The upper end of the coil assembly is connected to the mounting slot.

[0007] In the above-mentioned brushless motor with magnet-stabilized mounting, a fixing strip is installed on the upper end of the stator end cover, the motor shaft passes through the fixing strip, and a sensor bracket is sleeved on the motor shaft.

[0008] In the above-mentioned brushless motor with magnet-stabilized mounting, the rotor end cover is provided with several heat dissipation vents.

[0009] In the above-mentioned brushless motor with magnet-stabilized mounting, reinforcing ribs are formed on the rotor housing on both sides of the mounting hole, the middle part of the rotor housing has an inward concave structure, and a light-reducing groove is formed on the outer periphery of the rotor housing.

[0010] Compared with the prior art, the brushless motor with stable magnet mounting provided by this utility model has the following beneficial effects: by opening mounting holes in the rotor housing, permanent magnets are installed in the mounting holes, so that the permanent magnets are fixedly connected to the rotor housing as a whole, and rotor end caps are set at both ends of the rotor housing, which further improves the installation stability of the permanent magnets. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the rotor housing structure;

[0014] In the diagram: 1. Stator housing; 11. Stator end cover; 111. Mounting slot; 12. Placement slot; 2. Rotor housing; 21. Rotor end cover; 211. Heat dissipation vent; 22. Mounting hole; 23. Shaft hole; 24. Reinforcing rib; 25. Lightening slot; 3. Motor shaft; 4. Permanent magnet; 41. Alloy column; 5. Coil assembly; 6. Fixing strip; 7. Sensor bracket. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figures 1 to 3As shown, this embodiment includes a stator housing 1, a rotor housing 2, and a motor shaft 3. The rotor housing 2 is fixedly installed inside the stator housing 1. A stator end cap 11 is fixedly installed at the end of the stator housing 1. The end cap is fixedly connected to the upper end of the stator housing 1 by bolts and seals the upper end of the stator housing 1. A through shaft hole 23 is opened at the center of the rotor housing 2. Several through mounting holes 22 are opened on the rotor housing 2 around the shaft hole 23 and arranged in a circumferential array along the shaft hole 23. The permanent magnet 4 extends into and is fixedly installed in the mounting holes 22. The middle part of the permanent magnet 4 is an alloy column 41. The two ends of the permanent magnet 4 extend out of the mounting holes 22. Two rotor end caps 21 are fixedly installed at both ends of the rotor housing 2, further connecting the permanent magnet 4 to the rotor housing 2. Several heat dissipation vents 211 arranged in a circumferential array are opened on the rotor end caps 21. One end of the motor shaft 3 passes through the shaft hole 23 and is connected to the bottom of the stator housing 1.

[0017] like Figures 1 to 3 As shown, a plurality of placement slots 12 are provided on the inner outer edge of the stator housing 1. A coil assembly 5 is fixedly installed in the placement slot 12. A corresponding mounting slot 111 is provided on the stator end cover 11. When the stator end cover 11 is installed and connected to the stator housing 1, the upper end of the coil assembly 5 is connected to the mounting slot 111. The placement slots 12 and the mounting slot 111 fix the coil assembly 5.

[0018] To elaborate further, such as Figures 1 to 3 As shown, reinforcing ribs 24 are formed on the rotor housing 2 on both sides of the mounting hole 22. The reinforcing ribs 24 extend from the inside of the mounting hole 22 to the inner wall of the rotor housing 2. The middle part of the rotor housing 2 has a concave structure, and a weight-reducing groove 25 is provided on the outer periphery of the rotor housing 2. The concave structure and the weight-reducing groove 25 reduce the weight of the rotor housing 2.

[0019] To elaborate further, such as Figures 1 to 2 As shown, a fixing strip 6 is installed on the upper end of the stator end cover 11, the motor shaft 3 passes through the fixing strip 6, and a sensor bracket 7 is sleeved on the motor shaft 3.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A magnetically stable mounted brushless motor, comprising a stator shell (1), a rotor housing (2) and a motor shaft (3), the rotor housing (2) is fixedly mounted inside the stator shell (1), and a stator end cover (11) is fixedly mounted at the end of the stator shell (1), characterized in that: The rotor shell (2) is internally provided with a plurality of through installation holes (22), the installation holes (22) are fixedly installed with permanent magnets (4), the permanent magnets (4) are alloy cylinders (41) in the middle, the permanent magnets (4) are protruded from the installation holes (22) at both ends, both ends of the rotor shell (2) are fixedly installed with rotor end covers (21), the rotor shell (2) is centrally provided with a through shaft hole (23), one end of the motor shaft (3) is penetrated through the shaft hole (23) and connected with the bottom of the stator shell (1), the inside of the stator shell (1) is externally provided with a plurality of placement grooves (12), the placement grooves (12) are fixedly installed with coil assemblies (5), the stator end cover (11) is correspondingly provided with an installation groove (111), and the upper end of the coil assembly (5) is connected with the installation groove (111).

2. A magnetically stable mounted brushless motor according to claim 1, characterized in that: The stator end cover (11) is installed with a fixed strip (6) at the upper end, the motor shaft (3) is penetrated through the fixed strip (6), and the motor shaft (3) is sleeved with a sensor support (7).

3. A magnetically stable mounted brushless motor according to claim 1, characterized in that: A plurality of heat dissipation openings (211) are formed in the rotor end cover (21).

4. A magnetically stable mounted brushless motor according to claim 1, characterized in that: The rotor shell (2) is formed with reinforcing ribs (24) on both sides of the installation holes (22), the middle part of the rotor shell (2) is a concave structure, and the outer periphery of the rotor shell (2) is provided with lightening grooves (25).

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