Motor rear end cover and motor using same

Abstract

The utility model discloses a motor rear end cover and a motor applying the same, which belong to the technical field of motor manufacture, and comprise a shell and a partition plate arranged in the shell, the partition plate divides the interior of the shell into a first cavity and a second cavity which respectively face towards the two ends of the shell, a bearing installation position is arranged on the bottom wall of the first cavity, a fan installation position is arranged on the bottom wall of the second cavity, the bearing installation position is communicated with the fan installation position, the bearing installation position is flush with the end face of the shell, and the overall size of the rear end shell is reduced by compressing the depth of the first bearing installation position. The heat dissipation capability is improved, and the assembly difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor manufacturing, and particularly relates to a motor rear end cover and a motor applying the same. Background Art

[0002] As a prime mover, permanent magnet motors are widely used in modern industry. Existing permanent magnet motors are all equipped with controllers, and the installation of the controllers is divided into two structures: split type and integrated type. In the split type structure, the permanent magnet motor and the controller are separated into two independent components, and the two components are connected by a cable. Good sealing is required between the motor and the controller. The advantage is that it can reduce the interference of the motor operation on the controller, and can also avoid the heat generated during the motor operation, reducing the influence of temperature on the controller. Its disadvantage is that the structure is not compact, and the packaging cost of the two components is relatively high. Moreover, the installation position of the control box in the split type structure has a great influence on the heat transfer. When the motor is installed on a fan, the heat dissipation of the control box is poor when the control box is installed far from the fan. The integrated type structure is to install the control box on the motor, and the controller is installed on the top or the rear end of the motor, which has the characteristics of compact structure and small volume. Insulation, cooling and sealing measures need to be taken during use. Existing integrated motors achieve the above purposes by increasing the space between the motor and the control box or increasing the internal space of the control box. However, increasing the space easily leads to an increase in volume and an increase in the assembly difficulty.

[0003] A patent with the publication number of CN202798283U discloses a heat dissipation motor end cover, which is disc-shaped, with a bearing hole in the center, 3 - 6 bearing cover mounting holes beside the bearing hole, 3 - 6 end cover mounting holes on the periphery of the disc, and an oil hole on the periphery. There are evenly arranged protruding heat dissipation strips on the outer surface of the disc. The heat dissipation strips can be all arranged in parallel, or divided into two groups and arranged perpendicular to each other or in a radial pattern. The length of this motor end cover is short and not conducive to heat dissipation. Summary of the Utility Model

[0004] One of the purposes of the utility model is to provide a motor rear end cover, which solves the problems of increasing space, increasing volume, non-compact structure and increasing assembly difficulty of the existing motor rear end cover.

[0005] To achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is as follows:

[0006] A motor rear end cover includes a housing and a partition disposed within the housing. The partition divides the interior of the housing into a first cavity and a second cavity respectively facing both ends of the housing. A bearing mounting position is provided on the bottom wall of the first cavity, and a fan mounting position is provided on the bottom wall of the second cavity. The bearing mounting position communicates with the fan mounting position, and the bearing mounting position is flush with the end face of the housing. By compressing the depth of the first bearing mounting position, the overall volume of the rear end housing is reduced, the heat dissipation capacity is improved, and the assembly difficulty is reduced.

[0007] Further, it also includes a cooling fan which is installed in the fan mounting position to enhance heat dissipation.

[0008] Furthermore, a through hole is provided at the bottom of the first cavity, which communicates the bearing mounting position and the fan mounting position. The depth of the first cavity is less than that of the second cavity, which is used to shorten the total length of the housing and reduce the bearing installation difficulty.

[0009] Preferably, it also includes an insulating plate which is disposed outside the fan mounting position to block the heat transfer of the motor to the controller.

[0010] Preferably, it also includes an adapter plate which is disposed within the second cavity, and pins are provided on the adapter plate for convenient disassembly and assembly.

[0011] More preferably, it also includes heat dissipation ribs which are axially arranged on the outer wall of the housing along the axial direction of the housing, and the heat dissipation ribs are arranged in a streamline shape to enhance heat dissipation and improve the strength of the housing.

[0012] More preferably, sealing grooves are provided at both ends of the housing, and sealing rings are provided in the sealing grooves to separate the motor and the controller.

[0013] More preferably, it also includes reinforcing ribs which are radially arranged in the first cavity and the second cavity respectively along the radial direction of the housing to improve the strength of the housing and ensure the stability of the installation of the bearing and the fan.

[0014] More preferably, it also includes a wire hole which penetrates through the partition, and the wire hole is disposed outside the bearing mounting position for connecting the cables within the motor.

[0015] The second object of the present utility model is to provide a motor, which solves the problem of poor heat dissipation of the existing integral motor rear end cover.

[0016] To achieve the above-mentioned utility model object, the technical solutions adopted by the present utility model are as follows:

[0017] A motor, including the motor rear end cover as described above, is easy to install.

[0018] The beneficial effects of the present utility model are as follows:

[0019] (1) A partition is provided on the housing of the motor rear end cover. The partition divides the interior of the housing into two parts, namely a first cavity and a second cavity. A bearing installation position is provided in the first cavity for supporting the rotating shaft of the motor, and a fan installation position is provided in the second cavity for installing a cooling fan. The bearing installation position is flush with the end face of the housing, making it easy to press-fit the bearing. A fan for active heat dissipation is provided in the second cavity to enhance the heat dissipation effect.

[0020] (2) An insulating plate is provided on the housing of the motor rear end cover to separate the circuits. Sealing grooves are provided at both ends of the housing for installing sealing rings to play a sealing role. In addition, streamlined heat dissipation ribs are provided on the outer side wall of the housing to enhance the heat dissipation of the housing and improve the strength of the housing. Description of the Drawings

[0021] Figure 1 is the front view of the motor rear end cover provided by the present utility model;

[0022] Figure 2 is the side view of the motor rear end cover provided by the present utility model;

[0023] Figure 3 is the rear view of the motor rear end cover provided by the present utility model;

[0024] Figure 4 is Figure 2 the sectional view along line A-A of the upper edge;

[0025] Figure 5 is the exploded view of the motor provided by the present utility model.

[0026] Reference Signs:

[0027] 1. Rear end cover; 11. Housing; 111. Wire hole; 12. Partition; 13. First cavity; 131. Bearing installation position; 14. Second cavity; 15. Cooling fan; 151. Insulating plate; 152. Through hole; 16. Heat dissipation rib; 17. Reinforcing rib; 18. Adapter plate; 181. Pin; 19. Fan installation position; 2. Rear cover; 3. Motor; 4. Rotating shaft; 5. First sealing groove; 6. Second sealing groove. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] Embodiment 1

[0030] As Figures 1 - 4 shown, this embodiment discloses a rear end cover 1 of a motor, including a housing 11 and a partition 12 arranged inside the housing 11. The partition 12 divides the interior of the housing 11 into a first cavity 13 and a second cavity 14 respectively facing both ends of the housing 11. A bearing mounting position 131 is provided on the bottom wall of the first cavity 13, and a fan mounting position 19 is provided on the bottom wall of the second cavity 14. The bearing mounting position 131 communicates with the fan mounting position 19, and the bearing mounting position 131 is flush with the end face of the housing 11. The depth of the first cavity 13 of the rear end cover 1 close to the motor is less than that of the second cavity 14. By shortening the length of the rear end cover 1, the volume can be reduced. Also, when installing the rear end cover 1, by shortening the distance from the bearing to the bearing mounting position 131, the assembly difficulty can be reduced.

[0031] Furthermore, it further includes a cooling fan 15. The cooling fan 15 is installed in the fan mounting position 19 and is driven by the motor, playing a role in disturbing the flow and dissipating heat.

[0032] Preferably, a through hole 152 is provided at the bottom of the first cavity 13. The through hole 152 communicates the bearing mounting position 131 and the fan mounting position 19. The depth of the first cavity 13 is less than that of the second cavity 14. The through hole 152 is used for the motor to drive the cooling fan 15 to rotate.

[0033] Even further, it further includes an insulating plate 151. The insulating plate 151 is arranged outside the fan mounting position 19. A number of columns are provided on the partition 12, and the insulating plate 151 is fixed on the columns to separate the electronic components from the rear end cover 1 of the motor, playing a role in blocking the heat transfer.

[0034] Even further, it further includes an adapter board 18. The adapter board 18 is arranged in the second cavity 14. The adapter board 18 is provided with pins 181. The pins 181 are used to connect the control board, which can realize the split installation of the control box and the motor, that is, there is no cable between the control box and the motor. The connection between the motor and the control box is realized through the adapter board 18, which is convenient for disassembly and assembly. This makes the motor have the characteristics of a split structure that reduces the interference of the motor to the control box, and at the same time, the overall structure of the motor is compact, making it have good heat dissipation performance.

[0035] Furthermore, it also includes heat dissipation ribs 16. The heat dissipation ribs 16 are arranged on the outer wall of the housing 11 along the axial direction of the housing 11. The heat dissipation ribs 16 are arranged in a streamline shape. The heat dissipation ribs 16 are used to increase the contact area between the motor housing and the air, playing a role in enhancing heat dissipation. At the same time, the heat dissipation ribs 16 are used to strengthen the strength of the housing 11, preventing the housing 11 from deforming and cracking.

[0036] Preferably, sealing grooves are provided at both ends of the housing 11. Sealing rings are provided in the sealing grooves. A second sealing groove 6 is provided on the end face close to the first cavity 13, and a first sealing groove 5 is provided on the end face close to the second cavity 14. Both sealing grooves are provided with rabbet structures, which are used to improve the connection strength and sealing performance of the housing 11.

[0037] More preferably, it also includes reinforcing ribs 17. The reinforcing ribs 17 are respectively arranged in the first cavity 13 and the second cavity 14 along the radial direction of the housing 11. The reinforcing ribs 17 are used to strengthen the strength of the housing 11.

[0038] More preferably, it also includes a wire hole 111. The wire hole 111 is arranged to penetrate through the partition plate 12, and the wire hole 111 is arranged outside the bearing installation position 131. The wire hole 111 is used for the connecting wires of the motor to pass through. A dust-proof plug is provided on the wire hole 111, playing a role in separating the motor from the first cavity 13.

[0039] Embodiment 2

[0040] As Figure 5 shown, this embodiment also discloses a motor, which includes a motor rear end cover 1, a rear cover 2, a motor 3 and a rotating shaft 4. The motor rear end cover 1 is installed at the tail of the motor 3. The rotating shaft 4 is rotatably connected in the motor 3, and a part of the rotating shaft 4 extends out from the tail of the motor 3. The rear cover 2 is installed on the rear end cover 1.

[0041] Preferably, a controller is provided inside the rear cover 2, and a waterproof plug is provided on the side wall of the rear cover 2 for connecting external cables.

[0042] The assembly process of this motor is as follows:

[0043] Take the rotating shaft 4, press-fit the front and rear bearings and then install them on the motor 3. Install the sealing rings into the first sealing groove 5 and the second sealing groove 6 of the housing 11 respectively. Then press-fit the bearings onto the bearing installation position 131 of the rear end cover 1. A part of the rotating shaft 4 passes through the bearings and is connected to the heat dissipation fan 15. Then take the insulating plate 151 and the adapter plate 18 and install them into the second cavity 14. Take the heat dissipation fan 15 and install it into the fan installation position 19. Connect the cables to complete the rear end cover 1 and then install it on the tail of the motor 3. Connect the cables to the adapter plate 18, and finally cover the rear cover 2 to complete the overall assembly of the motor.

[0044] Based on the disclosure and teachings of the above specification, those skilled in the art to which the present utility model pertains can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims

1. A motor rear end cover, comprising a housing (11) and a partition plate (12) disposed within the housing (11), the partition plate (12) dividing the interior of the housing (11) into a first cavity (13) and a second cavity (14) respectively facing both ends of the housing (11), characterized in that: A bearing mounting position (131) is provided on the bottom wall of the first cavity (13), a fan mounting position (19) is provided on the bottom wall of the second cavity (14), the bearing mounting position (131) communicates with the fan mounting position (19), and the bearing mounting position (131) is flush with the end face of the housing (11).

2. The motor rear end cover according to claim 1, characterized in that: It further includes a cooling fan (15), and the cooling fan (15) is installed in the fan mounting position (19).

3. The motor rear end cover according to claim 2, characterized in that: A through hole (152) is provided at the bottom of the first cavity (13), the through hole (152) communicates the bearing mounting position (131) and the fan mounting position (19), and the depth of the first cavity (13) is less than the depth of the second cavity (14).

4. The motor rear end cover according to claim 2, characterized in that: It further includes an insulating plate (151), and the insulating plate (151) is arranged outside the fan mounting position (19).

5. The motor rear end cover according to claim 4, characterized in that: It further includes an adapter plate (18), the adapter plate (18) is arranged in the second cavity (14), and pins (181) are provided on the adapter plate (18).

6. The motor rear end cover according to claim 1, characterized in that: It further includes cooling ribs (16), the cooling ribs (16) are arranged on the outer wall of the housing (11) along the axial direction of the housing (11), and the cooling ribs (16) are arranged in a streamline shape.

7. The motor rear end cover according to claim 6, characterized in that: Sealing grooves are provided at both ends of the housing (11), and sealing rings are provided in the sealing grooves.

8. The motor rear end cover according to claim 1, characterized in that: It further includes reinforcing ribs (17), and the reinforcing ribs (17) are respectively arranged in the first cavity (13) and the second cavity (14) along the radial direction of the housing (11).

9. The motor rear end cover according to claim 1, characterized in that: It further includes a wire hole (111), the wire hole (111) is arranged to penetrate through the partition plate (12), and the wire hole (111) is arranged outside the bearing mounting position (131).

10. A motor, characterized in that, It includes the motor rear end cover according to any one of claims 1-9.

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