Brushless motor

Abstract

The brushless motor comprises a shell (100), a motor end cover (200) inserted in an opening of the shell, a motor body (300), a circuit board (400), a bearing seat (500) and a gear box inner gear ring (600), the motor body (300), the circuit board (400), the bearing seat (500) and the gear box inner gear ring (600) are arranged in the shell (100), the circuit board (400) is arranged at one end, close to the motor end cover (200), of the motor body (300), and the bearing seat (500) is arranged at the other end, close to the motor end cover (200), of the gear box inner gear ring (600). The bearing seat (500) is arranged at one end, opposite to the circuit board (400), of the motor body (300), and the gear box inner gear ring (600) is fixed on the bearing seat (500). Due to the adoption of the structural design, the motor body, the bearing seat and the gear box inner gear ring are arranged on the shell, the gear box inner gear ring is fixed on the bearing seat, and the motor body and the gear box inner gear ring are integrally mounted, so that the mounting process is simplified, the workload of alignment and fixation is reduced, the integration level and the compactness are improved, the components are few, and the cost is low. The production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a brushless motor. Background Art

[0002] A brushless direct current motor (Brushless Direct Current motor, abbreviated as BLDC) is a high-performance motor that uses an electronic commutator to replace the traditional mechanical commutator and brushes. This design eliminates the problem of brush wear in traditional brushed motors, making the brushless motor have a longer service life, higher efficiency, and lower noise. Brushless motors are widely used in various fields, such as drones, electric vehicles, industrial automation equipment, household appliances (such as vacuum cleaners, fans), medical equipment, etc., and are favored for their high efficiency, low maintenance cost, and reliability.

[0003] To increase the output torque of the motor, a reduction gearbox is usually added to increase the output torque of the motor components. In the prior art, the Chinese utility model patent with the publication number CN220857820U discloses a motor structure of a brushless motor with a double-headed gearbox, including a motor body. End covers are provided at both ends of the motor body. A double output shaft is provided inside the motor body. The ends of the double output shaft penetrate through the end covers on both sides. Left and right gearboxes are respectively installed on the end covers at both ends of the motor body through screws; planetary bases are provided on the installation surfaces of the left and right gearboxes and the end covers. The end covers are fixed to the planetary bases through screws; the ends of the double output shaft are sleeved with sun gears, and the double output shaft is linked with the planetary gears inside the left and right gearboxes through the sun gears, and each level of planetary gears is linked through an external gear ring, so as to drive the output rotating shafts of the left and right gearboxes to rotate. The motor main body and the gearbox are separately arranged, and the end covers at both ends of the motor main body are fixed to the planetary bases of the gearbox through screws. Since each component is independent, the installation process is more complex, requiring additional fixing and alignment work, and there are many components, resulting in higher production costs.

[0004] Therefore, the prior art needs to be improved and enhanced. Summary of the Utility Model

[0005] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a brushless motor with simplified installation and low cost.

[0006] The utility model achieves the above purpose through the following technical means:

[0007] A brushless motor, comprising a housing, a motor end cover inserted at an opening of the housing, and a motor body, a circuit board, a bearing seat, and an internal gear ring of a gearbox disposed within the housing. Wherein, the circuit board is disposed at one end of the motor body close to the motor end cover, the bearing seat is disposed at one end of the motor body relative to the circuit board, and the internal gear ring of the gearbox is fixed on the bearing seat.

[0008] As a further solution of the present utility model, the motor body comprises a rotor structure and a stator structure. The rotor structure comprises a rotating shaft, a magnet sleeved on the rotating shaft, and a rotor core sleeved on the magnet. One end of the rotating shaft is rotatably mounted on the motor end cover through a first bearing, and the other end of the rotating shaft is rotatably mounted on the bearing seat through a second bearing; the stator structure comprises a stator, a winding, a first wire frame, and a second wire frame. The first wire frame and the second wire frame are fixed at both ends of the stator under the winding of the winding, and the circuit board is fixedly connected to the first wire frame.

[0009] As a further solution of the present utility model, both the first wire frame and the second wire frame comprise a plurality of positioning teeth, and the positioning teeth are inserted into the stator to fixedly mount the first wire frame and the second wire frame on the stator.

[0010] As a further solution of the present utility model, a plurality of tooth poles are formed by the inner wall of the stator extending towards the axis of the stator. The positioning teeth are inserted between two adjacent tooth poles, and both ends of the winding are respectively wound around the positioning teeth of the first wire frame and the second wire frame and sleeved around the periphery of the tooth poles to fix the positioning teeth at both ends of the tooth poles.

[0011] As a further solution of the present utility model, the magnet is a rare earth magnet.

[0012] As a further solution of the present utility model, a plurality of pins are disposed on the first wire frame, and a plurality of jacks matching the pins are penetrated on the circuit board. The pins are inserted into the jacks to position the circuit board.

[0013] As a further solution of the present utility model, an installation groove is disposed at one end of the motor end cover relative to the motor body, and a rubber sleeve is installed in the installation groove.

[0014] As a further solution of the present utility model, a wire sleeve is disposed between the rubber sleeve and the first bearing.

[0015] The beneficial effects of the present utility model are:

[0016] Due to the above structural design, the motor body, bearing seat, and internal gear ring of the gearbox are arranged in the housing. The internal gear ring of the gearbox is fixed to the bearing seat, and the motor body is integrally installed with the internal gear ring of the gearbox, which simplifies the installation process, reduces the workload of alignment and fixation, improves the integration and compactness, and has fewer components and lower production costs. Brief Description of the Drawings

[0017] Attached Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Attached Figure 2 is a sectional view of an embodiment of the present invention;

[0019] Attached Figure 3 is a schematic diagram of the split structure of the motor body of an embodiment of the present invention;

[0020] Attached Figure 4 is a schematic diagram of the exploded structure of the motor end cover of an embodiment of the present invention;

[0021] Attached Figure 5 is a schematic structural diagram of the circuit board of an embodiment of the present invention.

[0022] Each reference numeral in the figure is respectively:

[0023] 100 - housing, 200 - motor end cover, 300 - motor body, 400 - circuit board, 500 - bearing seat, 600 - internal gear ring of the gearbox;

[0024] 301 - rotor structure, 302 - stator structure;

[0025] 3011 - rotating shaft, 3012 - magnet, 3013 - rotor core, 3014 - first bearing, 3015 - second bearing;

[0026] 3021 - stator, 3022 - first wire frame, 3023 - second wire frame;

[0027] 302a - positioning tooth;

[0028] 3021a - tooth pole;

[0029] 3022a - pin;

[0030] 401 - jack;

[0031] 201 - installation groove, 202 - rubber sleeve, 203 - wire sleeve. Detailed Embodiment

[0032] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0034] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more. Understanding greater than, less than, exceeding, etc. does not include the present number, and understanding above, below, within, etc. includes the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0035] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0036] Embodiment:

[0037] As Figures 1-5 shown, a brushless motor of the present application includes a housing 100, a motor end cover 200 inserted at the opening of the housing 100, and a motor body 300, a circuit board 400, a bearing seat 500, and an internal gear ring 600 of a gearbox disposed inside the housing 100. Among them, the circuit board 400 is disposed at one end of the motor body 300 close to the motor end cover 200, the bearing seat 500 is disposed at one end of the motor body 300 relative to the circuit board 400, and the internal gear ring 600 of the gearbox is fixed on the bearing seat 500. Thus, the motor body 300 and the internal gear ring 600 of the gearbox are integrally assembled and installed, reducing one motor end cover and planetary base, etc., simplifying the installation process, reducing the workload of alignment and fixation, improving the integration and compactness, and having fewer components and lower production costs.

[0038] Specifically, the motor body 300 includes a rotor structure 301 and a stator structure 302. The rotor structure 301 includes a rotating shaft 3011, a magnet 3012 sleeved on the rotating shaft 3011, and a rotor core 3013 sleeved on the magnet 3012. One end of the rotating shaft 3011 is rotatably installed on the motor end cover 200 through a first bearing 3014, and the other end of the rotating shaft 3011 is rotatably installed on the bearing seat 500 through a second bearing 3015. The stator structure 302 includes a stator 3021, a winding, a first wire holder 3022, and a second wire holder 3023. The first wire holder 3022 and the second wire holder 3023 are fixed at both ends of the stator 3021 under the winding of the winding. The circuit board 400 is fixedly connected to the first wire holder 3022. The circuit board is electrically connected to the wire group, and the circuit board controls the current flowing into the wire group to achieve the purpose of controlling the brushless motor.

[0039] Specifically, both the first wire holder 3022 and the second wire holder 3023 include a plurality of positioning teeth 302a. The positioning teeth 302a are inserted into the stator 3021 to fixedly install the first wire holder 3022 and the second wire holder 3023 on the stator 3021. A plurality of tooth poles 3021a extend from the inner wall of the stator 3021 towards the axis of the stator. The positioning teeth 302a are inserted between two adjacent tooth poles 3021a. Both ends of the winding are respectively wound around the positioning teeth 302a of the first wire holder 3022 and the second wire holder 3023 and sleeved around the periphery of the tooth poles 3021a to fix the positioning teeth 302a at both ends of the tooth poles 3021a. That is, the fixation between the first wire holder 3022, the second wire holder 3023 and the stator 3021 is realized through the wire group.

[0040] When the wire group is powered on, the tooth poles 3021a generate magnetism, and the tooth poles 3021a interact with the magnet 3012 in the rotor core 3013, driving the rotating shaft 3011 to rotate within the stator 3021, thereby achieving the purpose of external output work.

[0041] Specifically, a plurality of pins 3022a are provided on the first wire holder 3022, and a plurality of jacks 401 matching the pins 3022a are provided through the circuit board 400. The pins 3022a are inserted into the jacks 401 to position the circuit board 400, which is convenient for fixing the circuit board 400, and is easy to disassemble, assemble and maintain.

[0042] Specifically, an installation groove 201 is provided at one end of the motor end cover 200 relative to the motor body 300, and a rubber sleeve 202 is installed in the installation groove 201 for buffering.

[0043] Specifically, a wire sleeve 203 for protecting the circuit board connection wire is provided between the rubber sleeve 202 and the first bearing 3014.

[0044] In summary, through the above structural design, the present utility model solves the deficiencies in the prior art and has the characteristics of reasonable structure, simple installation, low cost, etc.

[0045] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A brushless motor, characterized in that: The invention comprises a housing (100), a motor end cover (200) inserted into an opening of the housing, and a motor body (300) arranged in the housing (100), a circuit board (400), a bearing seat (500) and a gear box inner gear ring (600), wherein the circuit board (400) is arranged at one end of the motor body (300) close to the motor end cover (200), the bearing seat (500) is arranged at one end of the motor body (300) opposite to the circuit board (400), and the gear box inner gear ring (600) is fixed on the bearing seat (500).

2. The brushless motor according to claim 1, characterized in that: The motor body (300) comprises a rotor structure (301) and a stator structure (302); the rotor structure (301) comprises a rotating shaft (3011), a set of magnets (3012) arranged on the rotating shaft (3011), and a set of rotor cores (3013) arranged on the magnets (3012); one end of the rotating shaft (3011) is rotatably mounted on the motor end cover (200) via a first bearing (3014); 1) is rotatably mounted on the bearing seat (500) through a second bearing (3015); the stator structure (302) comprises a stator (3021), a winding, a first bobbin (3022) and a second bobbin (3023); the first bobbin (3021) and the second bobbin (3022) are fixed to two ends of the stator (3021) under the winding of the winding; and the circuit board (400) is fixedly connected to the first bobbin (3022).

3. The brushless motor according to claim 2, characterized in that: The first wire frame (3022) and the second wire frame (3023) both include a plurality of positioning teeth (302a), and the positioning teeth (302a) are inserted into the stator (3021), and the first wire frame (3022) and the second wire frame (3023) are fixedly mounted on the stator (3021).

4. The brushless motor according to claim 3, characterized in that: The inner wall of the stator extends toward the axis of the stator to form a plurality of tooth poles (3021a); ​​the positioning teeth (302a) are inserted between two adjacent tooth poles (3021a); ​​two ends of the winding are respectively wound around the positioning teeth (302a) of the first wire frame (3022) and the second wire frame (3022), and are sleeved on the periphery of the tooth pole (3021a); ​​and the positioning teeth (302a) are fixed to the two ends of the tooth pole (3021a).

5. The brushless motor according to claim 4, characterized in that: The magnet (3012) is a rare earth magnet.

6. The brushless motor according to claim 5, characterized in that: The first wire frame (3022) is provided with a plurality of plug pins (3022a), and the circuit board (400) is provided with a plurality of sockets (401) matching the plug pins (3022a). The plug pins (3022a) are inserted into the sockets (401) to position the circuit board (400).

7. The brushless motor according to claim 6, characterized in that: An installation groove (201) is provided at one end of the motor end cover (200) relative to the motor body (300), and a rubber sleeve (202) is installed in the installation groove (201).

8. The brushless motor according to claim 7, characterized in that: A wire sleeve (203) is arranged between the rubber sleeve (202) and the first bearing (3014).

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