Motor rear cover mounting structure

Abstract

The utility model relates to the field of motors, and particularly discloses a motor rear cover mounting structure which comprises a motor rear cover which is of a barrel-shaped structure with an opening in the top, a ventilation notch is formed in the bottom of the motor rear cover, a rotor fixing seat is arranged in the middle of the bottom of the inner side of the motor rear cover, and a bearing hole is formed in the middle of the rotor fixing seat. The top of the motor rear cover is connected with the filtering device, the filtering device comprises a circular sleeve and a filtering net, the bottom of the circular sleeve is provided with filtering net inserting grooves in an array mode, the periphery of the filtering net is provided with positioning blocks, the top of the motor rear cover is provided with fixing blocks, the fixing blocks are connected with the filtering net inserting grooves, and the periphery of the circular sleeve is provided with connecting columns. And the circular sleeve is connected with the rear cover of the motor, and the filter screen is arranged in the circular sleeve, so that foreign matters can be prevented from entering the interior of the motor through the ventilation gap, and the performance reduction caused by dust contamination on a rotor and a stator in the motor can be prevented.

Description

Technical Field

[0001] The utility model relates to the field of motors, and in particular to a motor rear cover mounting structure. Background Art

[0002] An electric motor, commonly known as a motor, is an electromagnetic device that converts or transmits electrical energy through the law of electromagnetic induction. It is divided into electric motors and generators.

[0003] The previous motors consisted of a casing, a rotor, a stator, a stator winding and a cover. The cover was generally installed at the tail of the motor, so it was also called the motor rear cover. The rear cover was generally used to fix the stator to prevent the stator from moving and shaking during normal operation.

[0004] Patent number 2022229358174 is a back cover of a motor, which proposes a motor back cover that improves the heat dissipation function of the motor by adding heat dissipation holes. However, it is found in actual use that long-term use of this type of back cover will cause dust and foreign matter to enter the motor, causing the rotor and stator surfaces to be contaminated with dust, resulting in a decrease in the performance of the motor. Utility Model Content

[0005] The utility model is to solve the technical problems mentioned in the above background technology, and proposes the following technical solutions:

[0006] A motor back cover mounting structure comprises a motor back cover, wherein the motor back cover is a barrel-shaped structure with an opening at the top, a plurality of ventilation gaps are arranged at the bottom of the motor back cover, a rotor fixing seat is arranged in the middle of the inner bottom of the motor back cover, a bearing hole is arranged in the middle of the rotor fixing seat, a filtering device is connected to the top of the motor back cover, the filtering device comprises a circular sleeve and a filter screen, a plurality of filter screen slots are arranged in an array at the bottom of the circular sleeve, a plurality of positioning blocks are arranged at the periphery of the filter screen, the number, size and position of the positioning blocks correspond to the number, size and position of the filter screen slots, a plurality of fixing blocks are arranged at the top of the motor back cover, the number and position of the fixing blocks correspond to the filter screen slots, the fixing blocks are connected to the filter screen slots, and a connecting column is arranged at the periphery of the circular sleeve.

[0007] Preferably, a circular mounting hole is provided on the connecting column.

[0008] Preferably, threaded holes are provided on the plurality of fixing blocks, circular holes are provided at positions corresponding to the filter screen slots, screw rods are inserted into the circular holes, and one end of the screw rods is threadedly connected to the threaded holes.

[0009] Preferably, a fan is arranged in the rear cover of the motor, a connecting rod is arranged in the middle of one end of the fan, the connecting rod is rotatably connected to the bearing hole, and a stator slot is arranged in the middle of the other end of the fan.

[0010] Preferably, a positioning slot is formed on the inner wall of the stator slot.

[0011] The beneficial effects of the utility model are:

[0012] 1. By providing a ventilation gap in the rear cover of the motor, the heat dissipation performance of the motor can be improved. By providing a circular sleeve connected to the rear cover of the motor and providing a filter in the circular sleeve, foreign matter can be prevented from entering the interior of the click through the ventilation gap, causing dust to contaminate the rotor and stator inside the motor and reduce performance.

[0013] 2. By setting a detachable connection between the circular sleeve and the motor back cover, the back cover can be separated from the circular sleeve and replaced when the filter needs to be cleaned, which is more convenient.

[0014] 3. By setting a fan inside the rear cover of the motor, the fan can work synchronously when the motor is working, which can improve the heat dissipation performance and effectively reduce the entry of dust and foreign matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 for Figure 2 Enlarged image of the middle circle;

[0018] Figure 4 This is a schematic diagram of the structure of the utility model in Example 2;

[0019] Figure 5 This is a cross-sectional view of the utility model in Example 2.

[0020] In the figure: 1. Motor back cover; 1-1. Ventilation gap; 1-2. Fixing block; 1-21. Threaded hole; 2. Rotor fixing seat; 2-1. Bearing hole; 3. Filter device; 3-1. Round sleeve; 3-11. Filter slot; 3-12. Round hole; 3-2. Filter; 3-21. Positioning block; 4. Connecting column; 4-1. Round mounting hole; 5. Screw; 6. Fan; 6-1. Connecting rod; 6-2. Stator slot; 6-21. Positioning slot. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present utility model, it is necessary to understand that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described in the terms "fixed connection" and "fixed setting" include but are not limited to "welding", "riveting", "adhesion", and "threaded connection". The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device.

[0023] The directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0024] Embodiment 1

[0025] Reference Figure 1-3 A motor back cover installation structure comprises a motor back cover 1, the motor back cover 1 is a barrel-shaped structure with an opening at the top, a ventilation gap 1-1 is arranged at the bottom of the motor back cover 1, a rotor fixing seat 2 is arranged in the middle of the inner bottom of the motor back cover 1, a bearing hole 2-1 is arranged in the middle of the rotor fixing seat 2, a filter device 3 is connected to the top of the motor back cover 1, the filter device 3 comprises a circular sleeve 3-1 and a filter screen 3-2, four filter screen slots 3-11 are arranged in an array at the bottom of the circular sleeve 3-1, four positioning blocks 3-21 are arranged on the periphery of the filter screen 3-2, the size and position of the positioning blocks 3-21 correspond to the size and position of the filter screen slot 3-11, four fixing blocks 1-2 are arranged on the top of the motor back cover 1, the position of the fixing blocks 1-2 corresponds to the filter screen slot 3-11, the fixing blocks 1-2 cooperate with the filter screen slot 3-11, and a connecting column 4 is arranged on the periphery of the circular sleeve 3-1.

[0026] Preferably, a circular mounting hole 4 - 1 is provided on the connecting column 4 .

[0027] Preferably, a threaded hole 1-21 is provided on the fixing block 1-2, a round hole 3-12 is provided at a position corresponding to the filter slot 3-11, a screw rod 5 is inserted into the round hole 3-12, and one end of the screw rod 5 is threadedly connected to the threaded hole 1-21.

[0028] In actual operation, the filter 3-2 is inserted into the filter slot 3-11 on the circular sleeve 3-1 through the positioning block 3-21, and then the fixing block 1-2 on the motor back cover 1 is inserted into the filter slot 3-11, and then the motor back cover 1 and the circular sleeve 3-1 are fixed by screws, and finally connected to the motor casing through the connecting column 4 on the circular sleeve 3-1, and one end of the motor rotor is rotatably connected to the bearing hole 2-1. When the motor rotates, it can be ventilated and dissipated through the ventilation gap 1-1 on the motor back cover, thereby reducing the working temperature of the motor and preventing the internal circuit from being damaged due to high temperature. During the ventilation process, dust and foreign matter will be intercepted by the filter 3-2 to ensure the cleanliness of the inside of the motor.

[0029] Embodiment 2

[0030] Reference Figure 4-5 The difference between this embodiment and the first embodiment is that a fan 6 is arranged in the motor rear cover 1, a connecting rod 6-1 is arranged in the middle of one end of the fan 6, the connecting rod 6-1 is rotatably connected to the bearing hole 2-1, and a stator slot 6-2 is arranged in the middle of the other end of the fan 6.

[0031] Preferably, a positioning slot 6-21 is stacked on the inner wall of the stator slot 6-2.

Claims

1. A motor rear cover mounting structure, comprising a motor rear cover (1), characterized in that: The motor rear cover (1) is a barrel-shaped structure with an opening at the top, a plurality of ventilation notches (1-1) are arranged at the bottom of the motor rear cover (1), a rotor fixing seat (2) is arranged in the middle of the inner bottom of the motor rear cover (1), a bearing hole (2-1) is arranged in the middle of the rotor fixing seat (2), a filter device (3) is connected to the top of the motor rear cover (1), the filter device (3) comprises a circular sleeve (3-1) and a filter screen (3-2), and a plurality of filter screen slots (3-11) are arranged in an array at the bottom of the circular sleeve (3-1). ), a plurality of positioning blocks (3-21) are arranged on the periphery of the filter screen (3-2), the number, size and position of the positioning blocks (3-21) correspond to the number, size and position of the filter screen slots (3-11), a plurality of fixing blocks (1-2) are arranged on the top of the motor rear cover (1), the number and position of the fixing blocks (1-2) correspond to the filter screen slots (3-11), the fixing blocks (1-2) are connected to the filter screen slots (3-11), and a connecting column (4) is arranged on the periphery of the circular sleeve (3-1).

2. A motor rear cover mounting structure according to claim 1, characterized in that: The connecting column (4) is provided with a circular mounting hole (4-1).

3. The motor rear cover mounting structure according to claim 1, characterized in that: The plurality of fixing blocks (1-2) are provided with threaded holes (1-21), the filter screen slots (3-11) are provided with round holes (3-12) at corresponding positions, a screw rod (5) is inserted into the round hole (3-12), and one end of the screw rod (5) is threadedly connected to the threaded hole (1-21).

4. The motor rear cover mounting structure according to claim 1, characterized in that: A fan (6) is arranged inside the motor rear cover (1), a connecting rod (6-1) is arranged in the middle of one end of the fan (6), the connecting rod (6-1) is rotatably connected to the bearing hole (2-1), and a stator slot (6-2) is arranged in the middle of the other end of the fan (6).

5. The motor rear cover mounting structure according to claim 4, characterized in that: A positioning slot (6-21) is stacked on the inner wall of the stator slot (6-2).

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