A durable DC motor

Abstract

The utility model discloses a durable DC motor, including a front end cover and a rotating shaft arranged inside the front end cover; further comprising: a rotor core is installed on the outer wall of the rotating shaft, a stator core and a partition are installed on the inner wall of the front end cover; a rear end cover is arranged on the rear side of the front end cover, and a heat dissipation hole is opened on the rear end cover, a first positioning block is arranged on the outer wall of the front end cover, and the first positioning blocks are distributed at equal angles, and the first positioning block and the outer wall of the front end cover are welded. In the durable DC motor, a second positioning block is installed on the outer wall of the rear end cover, and a first positioning block is installed on the outer wall of the front end cover, positioning holes are opened on the second positioning block and the first positioning block, and locking bolts are connected inside the positioning holes, so that it is convenient to disassemble and assemble the rear end cover and the front end cover, so that it is convenient to repair the inside when damaged.

Description

Technical Field

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

[0002] A DC motor is an electric motor that converts direct current electrical energy into mechanical energy. It is widely used in electric traction due to its good speed regulation performance. There are many types of DC motors, and different types of DC motors will be selected in different fields of use.

[0003] For example, the publication number CN214154306U discloses a DC motor, including a rotor, a conductive shaft, a first conductive ring and a second conductive ring, the rotor is provided with a coil, the conductive shaft is passed through the rotor, the conductive shaft is provided with a first conductive part and a second conductive part isolated from each other, the end of the conductive shaft is provided with a first conductive gear, the first conductive gear is provided with a third conductive part and a fourth conductive part isolated from each other, the first conductive part and the second conductive part are respectively electrically connected to the two ends of the coil, the first conductive ring is rotatably connected to the second conductive gear, and is meshed with the first conductive gear through the second conductive gear, the second conductive ring is rotatably connected to the third conductive gear, and is meshed with the first conductive gear through the third conductive gear. This embodiment conducts electricity through the conductive shaft, and meshes with the first conductive gear through the second conductive gear and the third conductive gear, respectively, to ensure good contact, and can improve the phenomenon of poor contact between the solid brush and the commutator of the traditional motor;

[0004] However, the DC motor in the above application still has some shortcomings during use. For example, when the motor is working, the heat will be dissipated to the outside, so a heat dissipation groove will be opened on the motor end cover to discharge the internal heat of the motor through the heat dissipation groove. However, during use, external air will also enter the motor through the heat dissipation groove. After a long time, the inside of the motor will become dirty, which makes it inconvenient to clean the inside of the motor, thereby reducing the use effect of the DC motor. Therefore, we propose a durable DC motor to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a durable DC motor to solve the problem that the motors currently on the market, as mentioned in the background technology, will dissipate heat to the outside when working, so a heat dissipation groove will be opened on the motor end cover to discharge the heat inside the motor through the heat dissipation groove. However, during use, external air will also enter the motor through the heat dissipation groove. After a long time, the motor will become dirty, which makes it inconvenient to clean the inside of the motor, thereby reducing the use effect of the DC motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a durable DC motor, comprising a front end cover and a rotating shaft arranged inside the front end cover;

[0007] Also includes:

[0008] The outer wall of the rotating shaft is provided with a rotor core, and the inner wall of the front end cover is provided with a stator core and a partition plate;

[0009] A rear end cover is arranged at the rear side of the front end cover, and a heat dissipation hole is opened on the rear end cover.

[0010] Preferably, the outer wall of the front end cover is provided with first positioning blocks, and the first positioning blocks are distributed at equal angles, and the first positioning blocks and the outer wall of the front end cover are welded.

[0011] Preferably, a second positioning block is installed on the outer wall of the rear end cover, and positioning holes are provided on the second positioning block and the first positioning block, and locking bolts are connected inside the positioning holes.

[0012] Preferably, the second positioning blocks are distributed at equal angles, and the positions of the second positioning blocks and the first positioning blocks are aligned with each other, and the first positioning blocks and the second positioning blocks are fixed by locking bolts.

[0013] Preferably, a fan blade and a brush are installed at the rear end of the rotating shaft, and the brush is located at the rear side of the fan blade, and there is a gap between the fan blade and the partition.

[0014] Preferably, a dust screen is fixed to the inner wall of the rear end cover by bolts, through holes are opened on the partition, and the through holes are distributed at equal angles, and the partition is made of metal.

[0015] Preferably, the brush and the rotating shaft are fixed by screws, and the brush and the dustproof net are fitted to each other, and the dustproof net and the end of the rear end cover are fitted to each other, and the heat dissipation holes on the rear end cover are rectangular.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the DC motor can intercept dust impurities in the external air through the dustproof net arranged on the inner wall of the rear end cover, so that the gas entering the motor is kept clean, thereby reducing the phenomenon of dust remaining in the motor, as shown in the following content:

[0017] The inner wall of the rear end cover is fixed with a dust net by bolts, and through holes are opened on the partition, and the through holes are distributed at equal angles, and the partition is made of metal, so that the heat of the motor can flow out from the through holes when it is working. The metal partition can speed up the heat transfer, effectively prevent the phenomenon of excessive temperature inside causing damage to parts, and improve the durability of parts. When the internal heat of the motor and the external air circulate, the dust net can effectively intercept impurities in the air, reducing the retention of dust impurities inside the motor;

[0018] Furthermore, fan blades and brushes are installed at the rear end of the shaft, and the brush is located on the rear side of the fan blades, and there is a gap between the fan blades and the partition, so that when the shaft rotates, the fan blades can be driven to rotate, and the air circulation is accelerated through the fan blades to better dissipate heat. At the same time, the shaft will also drive the brush to rotate together.

[0019] Furthermore, the brush and the rotating shaft are fixed by screws, and the brush and the dust screen fit together, and the dust screen and the end of the rear cover fit together, and the heat dissipation hole on the rear cover is rectangular, so that the dust screen can be cleaned by the brush, effectively preventing the dust from clogging the dust screen, thereby ensuring the normal dissipation and circulation of heat;

[0020] (2) A second positioning block is installed on the outer wall of the rear end cover, and a first positioning block is installed on the outer wall of the front end cover. Positioning holes are provided on the second positioning block and the first positioning block, and locking bolts are connected inside the positioning holes. This facilitates the disassembly and assembly of the rear end cover and the front end cover, so that the internal parts can be repaired easily when they are damaged.

[0021] Furthermore, the second positioning blocks are distributed at equal angles, and the positions of the second positioning blocks and the first positioning blocks are aligned with each other, and the first positioning blocks and the second positioning blocks are fixed to each other by locking bolts, so that the fan blades and the dust screen can be cleaned through the detachable rear cover and front cover, so that the filtering effect of the dust screen is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall main structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the installation position structure of the rotating shaft and the front end cover of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the rotating shaft of the utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure between the rotating shaft and the fan blades of the utility model;

[0026] Figure 5This is a schematic diagram of the structure of the utility model in which the rear end cover and the dust screen are separated;

[0027] Figure 6 This is a schematic diagram of the structure of the rear end cover and the dust screen in the fitted state of the utility model;

[0028] Figure 7 This is a schematic diagram of the partition structure of the utility model.

[0029] In the figure: 1. front cover; 2. rotating shaft; 3. rotor core; 4. stator core; 5. partition; 6. first positioning block; 7. rear cover; 8. second positioning block; 9. positioning hole; 10. locking bolt; 11. heat dissipation hole; 12. fan blade; 13. brush; 14. dust net; 15. through hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1: In this embodiment, the fan blades 12 are used to dissipate the heat of the motor when it is working. Figure 1-Figure 3 As shown:

[0032] The outer wall of the rotating shaft 2 is mounted with a rotor core 3, and the inner wall of the front end cover 1 is mounted with a stator core 4 and a partition 5;

[0033] A rear cover 7 is provided at the rear side of the front cover 1, and a heat dissipation hole 11 is provided on the rear cover 7. A fan blade 12 and a brush 13 are installed at the rear end of the rotating shaft 2, and the brush 13 is located at the rear side of the fan blade 12, and there is a gap between the fan blade 12 and the partition 5;

[0034] When using the durable DC motor, a stator core 4 is provided inside the front cover 1, and a rotor core 3 is installed on the outer wall of the rotating shaft 2, so that the rotating shaft 2 can be rotated when power is turned on, and a fan blade 12 is installed at the rear end of the rotating shaft 2, and a heat dissipation hole 11 is opened on the rear end cover 7, so during the use of the motor, as the rotating shaft 2 rotates, the fan blade 12 will be driven to rotate together, and the rotation of the fan blade 12 can make the heat inside the motor dissipate outward through the heat dissipation hole 11, wherein a partition 5 is fixed to the inner wall of the front cover 1, the partition 5 is made of metal, and the partition 5 is provided with through holes 15 distributed at equal angles, so that heat can be better transferred, effectively reducing the phenomenon of overtemperature inside the motor, making the motor more durable, and extending the service life of the motor.

[0035] Embodiment 2: In this embodiment, dust impurities in the external air can be intercepted and filtered under the action of the dustproof net 14. Figure 5-Figure 7 As shown:

[0036] The inner wall of the rear cover 7 is fixed with a dust screen 14 by bolts, the partition 5 is provided with through holes 15, and the through holes 15 are distributed at equal angles, and the partition 5 is made of metal, the brush 13 and the rotating shaft 2 are fixed by screws, and the brush 13 and the dust screen 14 fit each other, and the dust screen 14 and the end of the rear cover 7 fit each other, and the heat dissipation hole 11 on the rear cover 7 is rectangular;

[0037] A dustproof net 14 is attached to the inner wall of the end of the rear end cover 7, so that during use, external air will also enter the motor through the heat dissipation holes 11, and the setting of the dustproof net 14 can effectively intercept dust impurities in the air, thereby reducing the retention of dust impurities in the motor. When the shaft 2 rotates, the brush 13 will be driven to rotate, wherein the brush 13 and the dustproof net 14 are attached to each other. As the brush 13 rotates, the dustproof net 14 can be cleaned, and the dust adsorbed on the dustproof net 14 can be brushed off, thereby ensuring the cleanliness of the dustproof net 14, and then the impurities in the air can be better filtered and intercepted.

[0038] Embodiment 3: In this embodiment, the disassembly and assembly operation of the motor is disclosed, and the internal parts can be repaired and replaced. Figure 4-Figure 5 As shown:

[0039] The outer wall of the front end cover 1 is provided with a first positioning block 6, and the first positioning blocks 6 are distributed at equal angles, and the first positioning block 6 and the outer wall of the front end cover 1 are welded, and the outer wall of the rear end cover 7 is installed with a second positioning block 8, and the second positioning block 8 and the first positioning block 6 are both provided with positioning holes 9, and the inside of the positioning hole 9 is connected with a locking bolt 10, the second positioning blocks 8 are distributed at equal angles, and the positions of the second positioning blocks 8 and the first positioning blocks 6 are aligned with each other, and the first positioning block 6 and the second positioning block 8 are fixed by the locking bolt 10;

[0040] When it is necessary to inspect the inside of the motor or replace the internal parts, the locking bolt 10 can be first taken out from the positioning holes 9 on the first positioning block 6 and the second positioning block 8, and then the rear end cover 7 can be pulled backward to make the rear end cover 7 drive the second positioning block 8 to move together, so that the second positioning block 8 and the first positioning block 6 are separated, and the rear end cover 7 and the front end cover 1 are separated. After that, replacement or inspection work can be carried out, and it is also convenient to clean the brush 13 and the dustproof net 14 that have been used for a long time, so as to ensure the normal dustproof work in the later stage. The above is the working process of the whole device. The contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A durable DC motor, comprising a front end cover (1) and a rotating shaft (2) arranged inside the front end cover (1); It is characterized in that Also includes: The outer wall of the rotating shaft (2) is mounted with a rotor core (3), and the inner wall of the front end cover (1) is mounted with a stator core (4) and a partition (5); A rear end cover (7) is arranged on the rear side of the front end cover (1), and a heat dissipation hole (11) is provided on the rear end cover (7).

2. A durable DC motor according to claim 1, characterized in that: The outer wall of the front end cover (1) is provided with first positioning blocks (6), and the first positioning blocks (6) are distributed at equal angles, and the first positioning blocks (6) and the outer wall of the front end cover (1) are welded together.

3. A durable DC motor according to claim 2, characterized in that: A second positioning block (8) is installed on the outer wall of the rear end cover (7), and positioning holes (9) are provided on the second positioning block (8) and the first positioning block (6), and locking bolts (10) are connected inside the positioning holes (9).

4. A durable DC motor according to claim 3, characterized in that: The second positioning blocks (8) are distributed at equal angles, and the positions of the second positioning blocks (8) and the first positioning blocks (6) are aligned with each other, and the first positioning blocks (6) and the second positioning blocks (8) are fixed to each other via locking bolts (10).

5. A durable DC motor according to claim 2, characterized in that: A fan blade (12) and a brush (13) are mounted on the rear end of the rotating shaft (2), the brush (13) is located on the rear side of the fan blade (12), and there is a gap between the fan blade (12) and the partition plate (5).

6. A durable DC motor according to claim 2, characterized in that: A dust screen (14) is fixed to the inner wall of the rear end cover (7) by bolts, through holes (15) are provided on the partition plate (5), and the through holes (15) are distributed at equal angles, and the partition plate (5) is made of metal.

7. A durable DC motor according to claim 5, characterized in that: The brush (13) and the rotating shaft (2) are fixed by screws, and the brush (13) and the dust screen (14) are in contact with each other, and the dust screen (14) and the end of the rear end cover (7) are in contact with each other, and the heat dissipation hole (11) on the rear end cover (7) is rectangular.

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