Double brushless motor

Abstract

The utility model relates to the technical field of brushless motors, in particular to a double-brushless motor, which comprises a casing, a fixing block is arranged in the casing, a first mounting cavity and a second mounting cavity are formed in the casing by the aid of the fixing block, and two ends of the fixing block are movably connected with rotor assemblies along the axis direction of the casing. The inner wall of the first installation cavity and the inner wall of the second installation cavity are fixedly connected with a stator assembly, the stator assembly is arranged around the rotor assembly, and the double-brushless motor has the beneficial effects that the double-brushless structure is adopted, so that the double-brushless motor which is simple in structure and capable of improving the heating efficiency can be provided.

Description

Technical Field

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

[0002] Brushless motors are a type of motor commonly used in the market. Compared with brushed motors, brushless motors have many advantages such as low noise, maintenance-free, low power consumption, and long life, and are widely used. For example, a heat dissipation structure of a brushless motor and its brushless motor with publication number "CN116937891A" include a casing, a base, a spacer, a casing, a top plate, a rotor, a long bolt, a heat dissipation mechanism, an insulator, a washer, an iron core, a lower connecting frame, an upper connecting frame, a magnet and an upper connecting plate. A base is provided at the bottom of the casing, a spacer is provided at the top of the casing, a casing is provided on the top of the spacer, a top plate is fixedly connected to the top of the casing, a rotor is provided inside the casing, and a magnet is provided on the outside of the rotor, which facilitates the overall disassembly and maintenance, making the motor more convenient to assemble. By driving the fan blades to rotate when the motor rotates, the air flow exchange with the outside is enhanced from the inside of the motor to enhance the heat dissipation of the motor.

[0003] Brushless motors are also used for heating in diesel pumps, but the above-mentioned documents and most brushless motors on the market often adopt a single-head structure, which has a slow heating efficiency, thus affecting the working efficiency of the diesel pump and increasing energy waste. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a dual brushless motor capable of improving heating efficiency in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual brushless motor, comprising a casing, characterized in that: a fixed block is provided in the casing, and the fixed block causes a first installation cavity and a second installation cavity to be formed inside the casing, both ends of the fixed block are movably connected with a rotor assembly along the axial direction of the casing, the inner walls of the first installation cavity and the second installation cavity are fixedly connected with a stator assembly, and the stator assembly is arranged around the rotor assembly.

[0006] The above technical solution is adopted: unlike the brushless motor in the prior art which adopts a single brushless setting, the present application divides the interior of the casing into the first and second installation cavities through a fixed block, and both are provided with a rotor assembly and a stator assembly, thereby realizing a dual brushless structure and improving the heating efficiency. At the same time, the structure is simple, the volume is small, and the internal space distribution is reasonable.

[0007] A further configuration of the utility model is that first mounting grooves are provided at both ends of the fixing block, and the first mounting grooves are interconnected through a first through hole, a first mounting block is provided in the first mounting groove, and a second through hole for installing the rotor assembly is provided in the first mounting block.

[0008] By adopting the above technical solution, the first installation groove and the first installation block are provided to facilitate installation of the rotor assembly, and to facilitate assembly by workers, thereby improving assembly efficiency.

[0009] A further configuration of the utility model is as follows: the rotor assembly includes a rotor shaft and a magnet, wherein the magnet is sleeved on the outside of the rotor shaft; one end of the rotor shaft is movably connected to the first mounting block, and the other end passes through a third through hole provided at both ends of the casing and is located on the outside of the casing; a bearing is provided at the connection between the rotor shaft and the first mounting block.

[0010] The above technical solution is adopted: during use, the rotor assembly cooperates with the stator assembly. When the stator assembly is energized, a rotating magnetic field is formed in the air gap according to the principle of electromagnetic induction. This rotating magnetic field interacts with the magnetic field generated by the magnets on the rotor shaft, thereby generating torque to rotate the rotor shaft and realize the operation of the brushless motor.

[0011] A further configuration of the utility model is that the stator assembly comprises a stator core, a plurality of extension blocks are arranged at intervals along the circumferential direction of the inner wall of the stator core, the extension blocks are arranged around the rotor assembly, and a coil is wound around the outer circumference of the extension blocks, and a pole shoe portion is provided at one end of the extension block away from the inner wall of the first mounting cavity.

[0012] The above technical solution is adopted: during use, the coil is energized, and according to the principle of electromagnetic induction, a rotating magnetic field is formed in the air gap. This rotating magnetic field interacts with the magnetic field generated by the magnet on the rotor shaft, thereby generating torque to rotate the rotor shaft and realize the operation of the brushless motor. At the same time, due to the setting of the pole shoe, the air gap magnetic resistance is reduced and the magnetic field distribution is improved.

[0013] A further configuration of the utility model is that a fourth through hole is provided on the outer wall of the casing, and the fourth through hole can allow the coil to pass through and connect to an external power supply; a fifth through hole is provided on the fixing block, which can enable the coil in the second installation cavity to pass through and pass out from the fourth through hole.

[0014] By adopting the above technical solution, the fourth and fifth through holes are provided so that the coil can pass through the casing and be connected to an external power source, thereby ensuring that the coil can be energized and enabling the brushless motor to operate normally.

[0015] A further configuration of the utility model is that a plurality of heat dissipation holes are arranged on both ends of the housing.

[0016] The above technical solution is adopted: by setting the heat dissipation holes, the heat dissipation effect of the brushless motor during operation is guaranteed to avoid malfunctions caused by excessive heat.

[0017] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a cross-sectional view of the utility model.

[0020] Figure 3 This is an internal explosion diagram of the utility model.

[0021] Figure 4 This is a schematic diagram of the inorganic shell structure of the utility model.

[0022] Figure 5 It is a schematic diagram of the structure of the utility model from different viewing angles.

[0023] Explanation of reference numerals: housing 1, first mounting cavity 11, second mounting cavity 12, third through hole 13, fourth through hole 14, heat dissipation hole 15, fixing block 2, first mounting groove 21, first through hole 211, first mounting block 212, second through hole 212a, fifth through hole 22, rotor assembly 3, rotor shaft 31, bearing 311, magnet 32, stator assembly 4, stator core 41, extension block 42, coil 43, pole shoe portion 44. DETAILED DESCRIPTION

[0024] This specific embodiment and the drawings of the disclosed embodiments only involve structures related to the disclosed embodiments, and other structures may refer to the general design. After reading this specification, those skilled in the art may make modifications to this embodiment without creative contribution as needed, but as long as they are within the scope of the claims of the utility model, they are protected by the patent law.

[0025] like Figure 1-5 A dual brushless motor is shown, comprising a housing 1, with a plurality of heat dissipation holes 15 at both ends of the housing 1, a fixing block 2 is provided inside the housing 1, and the fixing block 2 causes a first mounting cavity 11 and a second mounting cavity 12 to be formed inside the housing 1, both ends of the fixing block 2 are movably connected to a rotor assembly 3 along the axis direction of the housing 1, and the inner walls of the first mounting cavity 11 and the second mounting cavity 12 are fixedly connected to a stator assembly 4, and the stator assembly 4 is arranged around the rotor assembly 3; Figure 2-3 The fixing block 2 shown is provided with first mounting grooves 21 at both ends, and the first mounting grooves 21 are interconnected through a first through hole 211. A first mounting block 212 is provided in the first mounting groove 21, and a second through hole 212a for mounting the rotor assembly 3 is provided in the first mounting block 212.

[0026] like Figure 2The rotor assembly 3 shown includes a rotor shaft 31 and a magnet 32, wherein the magnet 32 ​​is sleeved on the outside of the rotor shaft 31; one end of the rotor shaft 31 is movably connected to the first mounting block 212, and the other end passes through the third through hole 13 provided at both ends of the casing 1 and is located on the outside of the casing 1; a bearing 311 is provided at the connection between the rotor shaft 31 and the first mounting block 212.

[0027] like Figure 4 The stator assembly 4 shown includes a stator core 41, and a plurality of extension blocks 42 are arranged at intervals along the circumferential direction of the inner wall of the stator core 41. The extension blocks 42 are arranged around the rotor assembly 3, and a coil 43 is wound around the outer circumference of the extension blocks 42. A pole shoe portion 44 is provided at one end of the extension block 42 away from the inner wall of the first installation cavity 11.

[0028] like Figure 1 , 3 The outer wall of the casing 1 shown in , 5 is provided with a fourth through hole 14, and the fourth through hole 14 can allow the coil 43 to pass through and connect to an external power supply. The fixing block 2 is provided with a fifth through hole 22, which can enable the coil 43 in the second installation cavity 12 to pass through and pass out from the fourth through hole 14.

[0029] Unlike the brushless motors in the prior art that all adopt a single brushless setting, the present application divides the interior of the casing 1 into the first and second mounting cavities 12 through the fixing block 2, and both are provided with a rotor assembly 3 and a stator assembly 4, to realize a dual brushless structure, improve the heating efficiency, and at the same time have a simple structure, a small volume, and a reasonable internal space distribution; during use of the utility model, it is only necessary to energize the coil 43, and according to the principle of electromagnetic induction, a rotating magnetic field will be formed in the air gap, and this rotating magnetic field interacts with the magnetic field generated by the magnet 32 ​​on the rotor shaft 31, thereby generating a torque to rotate the rotor shaft 31, thereby realizing the operation of the brushless motor.

Claims

1. A dual brushless motor, comprising a housing, characterized in that: A fixing block is provided in the casing, and the fixing block causes a first installation cavity and a second installation cavity to be formed inside the casing. Both ends of the fixing block are movably connected with a rotor assembly along the axial direction of the casing. The inner walls of the first installation cavity and the second installation cavity are fixedly connected with a stator assembly, and the stator assembly is arranged around the rotor assembly.

2. A dual brushless motor according to claim 1, characterized in that: The fixing block has first mounting grooves at both ends, and the first mounting grooves are interconnected through a first through hole. A first mounting block is disposed in the first mounting groove, and a second through hole for mounting the rotor assembly is disposed in the first mounting block.

3. A dual brushless motor according to claim 2, characterized in that: The rotor assembly includes a rotor shaft and a magnet, wherein the magnet is sleeved on the outside of the rotor shaft; one end of the rotor shaft is movably connected to the first mounting block, and the other end passes through a third through hole provided at both ends of the casing and is located on the outside of the casing; a bearing is provided at the connection between the rotor shaft and the first mounting block.

4. A dual brushless motor according to any one of claims 1 to 3, characterized in that: The stator assembly includes a stator core, and a plurality of extension blocks are arranged at intervals along the circumferential direction of the inner wall of the stator core. The extension blocks are arranged around the rotor assembly, and coils are wound around the outer circumference of the extension blocks. A pole shoe portion is provided at one end of the extension block away from the inner wall of the first installation cavity.

5. A dual brushless motor according to claim 4, characterized in that: The outer wall of the housing is provided with a fourth through hole, through which the coil can pass to connect to an external power source, and the fixing block is provided with a fifth through hole, through which the coil in the second installation cavity can pass and pass out from the fourth through hole.

6. A dual brushless motor according to claim 1 or 5, characterized in that: A plurality of heat dissipation holes are arranged on both ends of the casing.

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