Brushless direct current motor integrated with inverter

Abstract

The brushless direct current motor comprises a shell, a rotating shaft, a mounting rack and the inverter, the shell is fixed on the mounting rack, the rotating shaft is led out of a motor structure in the shell, the mounting rack comprises an upright frame and a mounting seat, the end face of the shell is fixed with the upright frame, and the inverter is arranged on the mounting seat. The vertical frame downwards forms a mounting height and is provided with a fixed base, the mounting seat is horizontally arranged and is integrally fixed with the vertical frame, the inverter is fixed on the mounting seat, the inverter comprises a direct current input end and a control output end, and the control output end penetrates through the shell and is connected with the stator coil. By arranging the mounting frame, the motor and the inverter can be combined together in advance, circuit connection is carried out, and the motor and the inverter are of an integrated structure with complete functions before being mounted in an electric appliance, so that the assembly efficiency is improved, the detection work after mounting can be reduced, and the product productivity is improved.

Description

Technical Field

[0001] The utility model relates to a structural improvement of a motor, in particular to a brushless DC motor integrated with an inverter. Background Art

[0002] Brushless DC motors have good quietness effects and are increasingly used in various home appliances. Brushless DC motors can be directly supplied with DC power, so they can be reduced in size and are suitable for use in various small home appliances. Since brushless motors have no brushes, they mainly drive the rotation of the rotor by generating commutation magnetic flux directions through the coils on the stator. Therefore, an inverter is required to control the current direction on the coils. Due to the volume space limitations in small home appliances, it is inconvenient to install inverters and motors, and the space is small, the wiring operation is difficult, and the assembly efficiency is affected. Therefore, the motor needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a brushless DC motor integrated with an inverter.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: the motor includes a housing, a rotating shaft, a mounting frame, and an inverter, the housing is fixed on the mounting frame, the rotating shaft is led out from the motor structure in the housing, the mounting frame includes an upright frame and a mounting seat, the end face of the housing is fixed to the upright frame, the upright frame forms an installation height downward and is formed with a fixed base, the mounting seat is horizontally arranged and fixed integrally with the upright frame, the inverter is fixed on the mounting seat, the inverter includes a DC input terminal and a control output terminal, and the control output terminal passes through the housing and is connected to the stator coil. By setting the mounting frame, the motor and the inverter can be pre-combined together, and the circuit connection is performed, and before being installed in the electrical appliance, it is a fully functional integrated structure, and the mounting frame is set as a fixed base that can be directly installed, so the motor can be installed by fixing the installation and connecting the power cord during installation, which improves the efficiency of assembly, reduces the work of post-installation inspection, and improves product productivity.

[0005] Furthermore, the housing is arranged in contact with the mounting seat, and a reference plane is arranged at a corresponding position, the reference plane is arranged horizontally and fits with the mounting seat, and the control output terminal penetrates the housing and the mounting seat and enters the housing. The housing forms a certain plane, which can facilitate the positioning of the mounting seat and the opening, which is conducive to the control output terminal entering the housing.

[0006] Furthermore, the inverter has an electrical box, which is fixed to the mounting base by fixing screws, a DC input terminal is fixedly arranged on the upper part of the electrical box, a controller circuit board is arranged in the electrical box, a control output terminal is arranged at the bottom of the electrical box, the DC output terminal is connected to the DC power supply and connected to the controller circuit board, and the controller circuit board is also connected to the control output terminal. The electrical box is the external structure of the inverter, and its circuit working structure is inside it, and the DC input terminal is exposed for connecting to the power supply, and the electrical safety of the electrical box as a whole is good.

[0007] Furthermore, a recessed groove is provided on the outside of the electrical box, the recessed groove is formed around the outer structure of the shell, a band is embedded in the recessed groove, and the band is connected to the mounting seat. The recessed groove can be used to embed the band, and fixing with the band can avoid displacement caused by loosening of the screws due to vibration during motor operation, and can be selected for use in actual working conditions.

[0008] Furthermore, the DC input terminal is formed of a conductive material into a plug-in structure, the end of which is tapered and formed with a clamping groove, which is arranged corresponding to the spring in the conductive connector. The plug-in structure is formed of a conductive material, has a large current flow, is not easy to heat, has a reliable connection structure, and has good safety.

[0009] Compared with the prior art, the utility model has the following advantages and effects: the design is an improvement on the motor structure with an integrated inverter, and the functions of the motor and the inverter can be integrated and unified before leaving the factory, which is convenient for installation, has good structural reliability, stable operation and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the motor.

[0011] Figure 2 This is a schematic diagram of the motor's shaft end structure.

[0012] In the figure: 1. shell, 2. shaft, 3. mounting frame, 4. inverter, 5. upright frame, 6. mounting base, 7. DC input terminal, 8. control output terminal, 9. reference plane, 10. electrical box, 11. recessed groove, 12. positioning groove, 13. fixing base. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0014] A brushless DC motor with an integrated inverter, the motor includes a shell 1, a rotating shaft 2, a mounting frame 3, and an inverter 4, the shell 1 is fixed on the mounting frame 3, the rotating shaft 2 is led out from the motor structure in the shell 1, the mounting frame 3 includes an upright frame 5 and a mounting seat 6, the end face of the shell 1 is fixed to the upright frame 5, the upright frame 5 forms an installation height downward and is formed with a fixed base 13, the mounting seat 6 is horizontally arranged and fixed integrally with the upright frame 5, the inverter 4 is fixed on the mounting seat 6, the inverter 4 includes a DC input terminal 7 and a control output terminal 8, and the control output terminal 8 passes through the shell 1 and is connected to the stator coil.

[0015] The shell 1 is arranged in contact with the mounting seat 6 , and a reference plane 9 is arranged at a corresponding position. The reference plane 9 is arranged horizontally and fits with the mounting seat 6 . The control output terminal 8 penetrates the shell 1 and the mounting seat 6 and enters into the shell 1 .

[0016] The inverter 4 has an electrical box 10, which is fixed to the mounting base 6 by fixing screws. A DC input terminal 7 is fixedly provided on the upper part of the electrical box 10, a controller circuit board is provided in the electrical box 10, and a control output terminal 8 is provided at the bottom of the electrical box 10. The DC output terminal is connected to a DC power supply and to the controller circuit board, and the controller circuit board is also connected to the control output terminal 8.

[0017] The electrical box 10 is provided with a recessed groove 11 on its exterior. The recessed groove 11 is formed around the outer structure of the housing 1 . A hoop is embedded in the recessed groove 11 , and the hoop is connected to the mounting seat 6 .

[0018] The DC input terminal 7 is formed of a conductive material into a plug-in structure, the end of which is tapered and formed with a clamping groove 12, and the clamping groove 12 is arranged corresponding to the spring piece in the conductive joint.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary rather than restrictive. The scope of the present invention is defined by the claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0020] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A brushless DC motor integrated with an inverter, characterized in that: The motor comprises a housing (1), a rotating shaft (2), a mounting frame (3), and an inverter (4); the housing (1) is fixed on the mounting frame (3); the rotating shaft (2) is led out from the motor structure in the housing (1); the mounting frame (3) comprises a vertical frame (5) and a mounting seat (6); the end surface of the housing (1) is fixed to the vertical frame (5); the vertical frame (5) is downwardly formed with a mounting height and is formed with a fixed base (13); the mounting seat (6) is horizontally arranged and fixed integrally with the vertical frame (5); the inverter (4) is fixed on the mounting seat (6); the inverter (4) comprises a DC input terminal (7) and a control output terminal (8); the control output terminal (8) passes through the housing (1) and is connected to the stator coil.

2. The brushless DC motor with integrated inverter according to claim 1, characterized in that: The shell (1) is arranged in contact with the mounting seat (6), and a reference plane (9) is arranged at a corresponding position. The reference plane (9) is arranged horizontally and fits with the mounting seat (6). The control output end (8) penetrates the shell (1) and the mounting seat (6) and enters into the shell (1).

3. The brushless DC motor with integrated inverter according to claim 1, characterized in that: The inverter (4) comprises an electrical box (10), the electrical box (10) being fixed on the mounting seat (6) by means of fixing screws, a DC input terminal (7) being fixedly arranged on the upper part of the electrical box (10), a controller circuit board being arranged inside the electrical box (10), a control output terminal (8) being arranged at the bottom of the electrical box (10), the DC output terminal being connected to a DC power source and to the controller circuit board, and the controller circuit board being further connected to the control output terminal (8).

4. The brushless DC motor with integrated inverter according to claim 3, characterized in that: The electrical box (10) is provided with a recessed groove (11) on the outside, the recessed groove (11) is formed around the outer structure of the shell (1), a band is embedded in the recessed groove (11), and the band is connected to the mounting seat (6).

5. The brushless DC motor with integrated inverter according to claim 1, characterized in that: The DC input terminal (7) is formed of a conductive material into a plug-in structure, the end of which is tapered and formed with a clamping groove (12), and the clamping groove (12) is arranged corresponding to the spring piece in the conductive joint.

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