CN211183727U

CN211183727U - DC permanent magnet motor with built-in controller

Info

Publication number: CN211183727U
Application number: CN201922413851.XU
Authority: CN
Inventors: 仲建华; 朱科学; 王文佳; 高超
Original assignee: Changzhou Kinetek Motor Master Co ltd
Current assignee: Changzhou Kinetek Motor Master Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-04
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a DC permanent magnet motor with a built-in controller, which comprises a rotor component, a stator component and a controller, wherein a left end cover is fixed on the left side of a casing, a right end cover is fixed on the right side of the casing, and a motor rotor is arranged in a cavity formed by the left end cover, the right end cover and the casing; the controller comprises a circuit board, an inner hole for the rotating shaft to penetrate through is formed in the circuit board, the inner circle surface of the inner hole is not in interference contact with the outer circle surface of the rotating shaft, the circuit board is fixed on the inner side surface of the right end cover, and the right side surface of the circuit board is in contact with the inner side surface of the right end cover; the bearing cover is further fixed on the outer side of the right end cover, a right bearing chamber is formed between the outer side of the right end cover and the bearing cover as well as the rotating shaft, a right bearing is arranged in the right bearing chamber, and the right end cover is connected with the rotating shaft through the right bearing. The utility model has reasonable and compact structure design, saves an aluminum casting shell of an independent controller and reduces the cost; on the other hand, the method is suitable for various mounting structures and mounting forms, the mounting limitation is reduced, and the application range is expanded.

Description

DC permanent magnet motor with built-in controller

Technical Field

The utility model relates to a direct current permanent-magnet machine technical field especially relates to a direct current permanent-magnet machine of built-in controller.

Background

At present, the controller of the existing direct current permanent magnet motor is usually assembled into a whole with the motor body as an independent detachable unit, and can be arranged at the top of the motor body or at the rear part of the motor body. However, the dc permanent magnet motor with the split design has high production cost, and the installation structure is limited by space. The controller sets up the direct current permanent-magnet machine at the motor body top, if the customer needs to install staple bolt or support at the casing excircle, can only take the controller apart from the motor earlier, and then install behind staple bolt or the support, install the controller separately. And set up the direct current permanent magnet motor at motor body rear portion with the controller, if need with the motor repacking for the biax structure of stretching, also need take the controller apart from the rear end, look for position installation controller separately, the installation is comparatively loaded down with trivial details and inconvenient multiple mounting structure of adaptation.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the defects of the prior art, the utility model provides a structural design is reasonable compact, applicable in multiple mounting structure, reduces the installation restriction, enlarges the application scope a DC permanent magnet motor of built-in controller.

The utility model provides a technical scheme that its technical problem adopted is: a direct current permanent magnet motor with a built-in controller comprises a rotor assembly, a stator assembly and a controller, wherein the rotor assembly comprises a rotating shaft and a motor rotor, the stator assembly comprises a casing and a motor stator, a knurling for fixing the rotor assembly is arranged on the excircle of the rotating shaft, the motor rotor is provided with an inner hole and is in interference fit with the excircle of the rotating shaft through the inner hole, the motor stator is pressed in the casing in a pressing mode, a left end cover is fixed on the left side of the casing, a right end cover is fixed on the right side of the casing, and the motor rotor is arranged in a cavity formed by the left end cover, the right end cover and the casing; the controller comprises a circuit board, an inner hole for the rotating shaft to penetrate through is formed in the circuit board, the inner circular surface of the inner hole is not in interference contact with the outer circular surface of the rotating shaft, the circuit board is fixed on the inner side surface of the right end cover, and the right side surface of the circuit board is in contact with the inner side surface of the right end cover; the bearing cover is further fixed on the outer side of the right end cover, a right bearing chamber is formed between the outer side of the right end cover and the bearing cover as well as the rotating shaft, a right bearing is arranged in the right bearing chamber, and the right end cover is connected with the rotating shaft through the right bearing.

In order to ensure that the circuit board is not in interference contact with the rotating shaft, an inner bushing concentric with the rotating shaft is arranged between the outer circle of the rotating shaft and the inner circle of the right end cover, and the inner bushing penetrates through the inner hole.

Preferably, for the convenience of right bearing installation and effective protection bearing, right-hand member lid lateral surface position near the pivot excircle have an inner groovy, right-hand member lid correspond the inner groovy and still have the embedding portion that supplies the bearing cap embedding to connect outward, the bearing cap be L type structure, the bearing cap dustcoat of L type structure forms right bearing room outside the inner groove.

Correspondingly, the inner side of the left end cover is provided with a left bearing chamber, and the left end cover is connected with the rotating shaft through a left bearing arranged in the left bearing chamber.

Furthermore, the circuit board comprises a power module or an IGBT module, and the right end face of the power module or the IGBT module is in contact with the inner side face of the right end cover.

In order to further improve the heat dissipation effect, a heat conduction layer is arranged between the power module or the IGBT module and the right end cover, and the heat conduction layer is heat conduction silicone grease or a heat conduction insulating pad.

Furthermore, radiating fins are distributed on the outer side surface of the right end cover.

In the above scheme, when not influencing the whole heat dissipation of controller, design inside the end cover original independent control controller to will need radiating circuit board and end cover inner wall contact setting, the circuit board produces the direct outside diffusion of heat accessible end cover. The motor body containing the controller is similar to the common motor body in appearance, and can be suitable for various mounting structures such as single-output shaft, double-output shaft, base mounting, hoop or bracket mounting and the like.

The utility model has the advantages that the DC permanent magnet motor with the built-in controller provided by the utility model has reasonable and compact structural design, the controller is placed in the end cover at one end, on one hand, the end cover at one end can be used for heat dissipation, an independent controller cast aluminum shell is omitted, and the cost is reduced; on the other hand, the method is suitable for various mounting structures and mounting forms, the mounting limitation is reduced, and the application range is expanded.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention.

In the figure, the motor comprises a left bearing 1, a left end cover 3, a motor stator 4, a motor rotor 5, a rotating shaft 6, a machine shell 7, a circuit board 8, an inner bushing 9, a right end cover 10, a right bearing 11, a bearing cover 12 and an embedded part.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

A direct current permanent magnet machine of built-in controller as shown in fig. 1, is the utility model discloses the best embodiment, including rotor subassembly, stator module and controller, the rotor subassembly include pivot 5 and electric motor rotor 4, stator module include casing 6 and motor stator 3, have the annular knurl of fixed rotor subassembly on the 5 excircles of pivot, motor rotor 4 have the hole and through hole and 5 excircle interference fit of pivot, motor stator 3 crimping in casing 6. Two clamp springs are arranged on the rotating shaft 5, so that the rotor assembly can be positioned in the axial direction, and the axial center lines of the motor stator 3 and the motor rotor 4 are overlapped.

The left side of the machine shell 6 is fixed with a left end cover 2, the right side of the machine shell 6 is fixed with a right end cover 9, and the motor rotor 4 is arranged in a cavity formed by the left end cover 2, the right end cover 9 and the machine shell 6. The inner side of the left end cover 2 is provided with a left bearing 1 chamber, and the left end cover 2 is connected with a rotating shaft 5 through a left bearing 1 arranged in the left bearing 1 chamber.

The controller comprises a circuit board 7, an inner hole for the rotating shaft 5 to penetrate through is formed in the circuit board 7, the inner circle surface of the inner hole is not in interference contact with the outer circle surface of the rotating shaft 5, the circuit board 7 is fixed on the inner side surface of the right end cover 9, and the right side surface of the circuit board 7 is in contact with the inner side surface of the right end cover 9.

In the actual design process, in order to ensure that the circuit board 7 is not in interference contact with the rotating shaft 5, an inner bushing 8 concentric with the rotating shaft 5 is arranged between the outer circle of the rotating shaft 5 and the inner circle of the right end cover 9, and the inner bushing 8 penetrates through an inner hole. The inner liner 8 may be of a separate design or may be integrated into the right end cap 9 as part of the right end cap 9.

Right-hand member lid 9 outside still be fixed with bearing cap 11, form right bearing 10 room between the right-hand member lid 9 outside and bearing cap 11 and the pivot 5, right bearing 10 indoor be equipped with right bearing 10, right-hand member lid 9 be connected with pivot 5 through right bearing 10 for the convenience of right bearing 10 installation and effective protection bearing, right-hand member lid 9 lateral surface be close to the position of 5 excircles of pivot and have the inner groovy, right-hand member lid 9 correspond the inner groovy and still have the embedding portion 12 that supplies bearing cap 11 embedding connection outward, bearing cap 11 be L type structure, the bearing cap 11 dustcoat of L type structure forms right bearing 10 room outside the inner groove.

The circuit board 7 comprises a power module or an IGBT module, and the right end face of the power module or the IGBT module is in contact with the inner side face of the right end cover 9. And a heat conduction layer is arranged between the power module or the IGBT module and the right end cover 9, and the heat conduction layer is heat conduction silicone grease or a heat conduction insulating pad. Through the design of heat-conducting layer, the thermal conduction of can being convenient for improves the radiating effect of controller. Meanwhile, in order to better improve the heat dissipation effect, heat dissipation fins and the like can be designed on the outer side surface of the right end cover 9, so that the heat exchange area is further enlarged.

The direct current permanent magnet motor of built-in controller of design like this, structural design is reasonable compact, place the controller in inside the end cover of one end, when not influencing the whole heat dissipation of controller, design original independent control controller inside the end cover, saved solitary controller and cast the aluminum hull, the cost is reduced to circuit board 7 that will need the radiating sets up with the contact of end cover inner wall, circuit board 7 produces the direct outside diffusion of heat accessible end cover. The design makes the motor body containing the controller similar to the common motor body in appearance, and the motor body containing the controller can be suitable for various mounting structures such as single output shaft, double output shafts, base mounting, hoop or bracket mounting and the like, reduces mounting limitation and enlarges application range.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a direct current permanent magnet motor of built-in controller, includes rotor subassembly, stator module and controller, the rotor subassembly include pivot (5) and electric motor rotor (4), stator module include casing (6) and motor stator (3), the annular knurl that has fixed rotor subassembly on pivot (5) excircle, electric motor rotor (4) the hole has and through hole and pivot (5) excircle interference fit, motor stator (3) crimping in casing (6), its characterized in that: the left end cover (2) is fixed on the left side of the shell (6), the right end cover (9) is fixed on the right side of the shell (6), and the motor rotor (4) is arranged in a cavity formed by the left end cover (2), the right end cover (9) and the shell (6); the controller comprises a circuit board (7), an inner hole for the rotating shaft (5) to penetrate through is formed in the circuit board (7), the inner circular surface of the inner hole is not in interference contact with the outer circular surface of the rotating shaft (5), the circuit board (7) is fixed on the inner side surface of the right end cover (9), and the right side surface of the circuit board (7) is in contact with the inner side surface of the right end cover (9); the right-hand member lid (9) outside still be fixed with bearing cap (11), form right bearing (10) room between right-hand member lid (9) outside and bearing cap (11) and pivot (5), right bearing (10) indoor be equipped with right bearing (10), right-hand member lid (9) be connected with pivot (5) through right bearing (10).

2. The dc permanent magnet motor with a built-in controller according to claim 1, wherein: an inner bushing (8) concentric with the rotating shaft (5) is arranged between the outer circle of the rotating shaft (5) and the inner circle of the right end cover (9), and the inner bushing (8) penetrates through the inner hole.

3. The direct current permanent magnet motor with the built-in controller is characterized in that an inner groove is formed in the position, close to the outer circle of the rotating shaft (5), of the outer side face of the right end cover (9), an embedding part (12) for embedding and connecting the bearing cover (11) is further arranged outside the corresponding inner groove of the right end cover (9), the bearing cover (11) is in an L type structure, and a right bearing (10) chamber is formed outside the inner groove of the bearing cover (11) in the L type structure.

4. The dc permanent magnet motor with a built-in controller according to claim 1, wherein: the inner side of the left end cover (2) is provided with a left bearing (1) chamber, and the left end cover (2) is connected with the rotating shaft (5) through the left bearing (1) arranged in the left bearing (1) chamber.

5. The dc permanent magnet motor with a built-in controller according to claim 1, wherein: the circuit board (7) comprises a power module or an IGBT module, and the right end face of the power module or the IGBT module is in contact with the inner side face of the right end cover (9).

6. The dc permanent magnet motor with a built-in controller according to claim 5, wherein: and a heat conduction layer is arranged between the power module or the IGBT module and the right end cover (9), and the heat conduction layer is heat conduction silicone grease or a heat conduction insulating pad.

7. The dc permanent magnet motor with a built-in controller according to claim 1, wherein: radiating fins are distributed on the outer side surface of the right end cover (9).