Motor front end cover structure and motor

Abstract

The utility model relates to the technical field of motors, in particular to a motor front end cover structure which comprises a cover plate, the cover plate is of an annular structure, the edge of the cover plate is provided with a first surrounding edge, the top of the first surrounding edge is provided with a plurality of first connecting blocks at equal intervals, one side of each first connecting block is provided with a T-shaped groove, and each T-shaped groove is internally provided with a T-shaped plate. The edges of the T-shaped plates are in clearance fit with the inner walls of the T-shaped grooves, an elastic gasket is installed on the side face of each T-shaped plate, each elastic gasket is of a V-shaped structure, and one end of each elastic gasket extends out of the corresponding T-shaped groove. The cover plate and the inner shell can be extruded and deformed by the first connecting block and the second connecting block through the elastic gasket when the cover plate and the inner shell are mounted together, so that the friction force between the fastening bolt and the internal thread of the mounting hole can be increased by the elastic force generated by the deformation of the elastic gasket, the fastening bolt is stably mounted, and the mounting effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a front end cover structure for a motor and a motor. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It can convert electrical energy into mechanical energy and generally consists of a casing, stator, rotor, front cover, and rear cover.

[0003] Existing motor front cover designs typically use bolts to secure the motor housing. However, due to motor vibrations during operation, these bolts are prone to loosening, resulting in poor installation. Furthermore, during use, the motor typically cools the stator and rotor by blowing external air through a fan mounted on the motor shaft at one end of the rear cover. However, this direct airflow allows dust and moisture to seep into the motor housing, potentially damaging the stator and rotor and further compromising performance. Therefore, we propose a new motor front cover structure and a corresponding motor design. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a motor front cover structure and a motor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a motor front end cover structure is designed, including a cover plate, the cover plate having a ring structure, and a first rim is installed on the edge of the cover plate;

[0006] Several first connecting blocks are installed at equal intervals on the top of the first perimeter. Each first connecting block has a T-shaped groove on one side, and each T-shaped groove has a T-shaped plate inside. The edge of the T-shaped plate is fitted with the inner wall of the T-shaped groove with a clearance. Each T-shaped plate has an elastic gasket on its side. The elastic gasket has a "V" shaped structure, and one end of the elastic gasket extends to the outside of the T-shaped groove.

[0007] Preferably, each T-slot is equipped with a magnetic block on its side, so that when the T-plate is located in the T-slot, the side of the magnetic block is attracted and fixed to the side of the T-plate.

[0008] Preferably, a sealing ring is installed on the end of the cover plate near the elastic gasket.

[0009] This utility model also proposes an electric motor, including an inner shell, a stator coaxially mounted on the inner side wall of the inner shell, a rotor coaxially mounted inside the stator, a motor shaft coaxially connected to one end of the rotor, and both ends of the motor shaft penetrating the rotor. The feature is that: one end of the inner shell is provided with a rear end cover, one end of the motor shaft penetrates the rear end cover, and a fixing sleeve is provided along the edge of the rear end cover. One end of the fixing sleeve extends to the outside of the inner shell, and a second perimeter is installed on the edge of the fixing sleeve away from the rear end cover. Fixing rings are installed on both ends of the outer surface of the inner shell, and the second perimeter is stacked with the fixing rings.

[0010] Several fan blades are installed on one end of the motor shaft near the rear end cover. The fan blades are located inside the fixed sleeve. Several ventilation slots are opened on the side of the fixed sleeve and one end of the inner shell. Two adjacent ventilation slots are connected.

[0011] The inner shell is fitted with the outer shell on its side. Both ends of the outer shell are fitted with connecting sleeves. Each fixing ring has a connecting ring installed on its adjacent surface. Each connecting sleeve is fitted onto the corresponding connecting ring. An exhaust duct is provided on the bottom of the outer shell on the side away from the ventilation slot.

[0012] Each of the fixing rings has several mounting holes on its side, and each mounting hole has a fastening bolt inside.

[0013] It also includes a motor front end cover structure as described above, which is disposed at one end of the inner shell.

[0014] Preferably, one end of the fastening bolt passes through the first perimeter and extends into the mounting hole and engages with the thread of the mounting hole, and one end of the motor shaft passes through the cover plate. When the first perimeter is fixed to the fixing ring, one side of the elastic washer extends into the receiving groove.

[0015] Preferably, a number of heat sinks are installed on the outer surface of the inner shell.

[0016] Preferably, the inner shell is provided with a protective cover at the end near the fan blade. A third rim is installed on the side edge of the protective cover. The third rim is superimposed on the second rim, and one side of the third rim is fastened to the second rim and the fixing ring by connecting bolts. A dustproof net is installed on the side of the protective cover.

[0017] The design scheme proposed in this utility model has the following beneficial effects in application:

[0018] The elastic gasket can be compressed and deformed by the first and second connecting blocks when the cover plate and the inner shell are installed together. The elastic force generated by the deformation of the elastic gasket increases the friction between the fastening bolt and the internal thread of the mounting hole, thereby making the fastening bolt installed firmly and improving the installation effect.

[0019] By connecting the inner shell to the fixed sleeve through the ventilation slot, and then putting the outer shell on the inner shell, the fan blades can transport external air through the ventilation slot to the space between the outer and inner shells and blow it over the surface of the inner shell, cooling the heat generated by the stator and rotor during operation. External dust and other impurities will not adhere to the surface of the stator and rotor, thus improving the heat dissipation effect. Attached Figure Description

[0020] Figure 1 The structure of this utility model is dispersed Figure 1 ;

[0021] Figure 2 The structure of this utility model is dispersed Figure 2 ;

[0022] Figure 3 This is a side sectional view of the outer shell and inner shell structure of this utility model;

[0023] Figure 4 This is a structural diagram of the first connecting block and the elastic gasket of this utility model.

[0024] In the diagram: 1. Connecting sleeve; 2. Exhaust duct; 3. Outer shell; 4. Cover plate; 5. First connecting block; 6. Sealing ring; 7. First rim; 8. Second connecting block; 9. Heat sink; 10. Connecting ring; 11. Second rim; 12. Third rim; 13. Dustproof net; 14. Fastening bolt; 15. Protective cover; 16. Ventilation duct; 17. Inner shell; 18. Rotor; 19. Receiving groove; 20. Fixing ring; 21. Mounting hole; 22. Fixing sleeve; 23. Fan blade; 24. Elastic gasket; 25. Rear end cover; 26. Stator; 27. Motor shaft; 28. T-slot; 29. ​​T-plate; 30. Magnetic block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-4 A motor front end cover structure includes a cover plate 4, which has an annular structure and a first perimeter 7 is installed on the edge of the cover plate 4.

[0027] like Figure 2 and Figure 4 As shown, a number of first connecting blocks 5 are installed at equal intervals on the top of the first perimeter 7. Each first connecting block 5 has a T-shaped groove 28 on one side, and each T-shaped groove 28 has a T-shaped plate 29 inside. The T-shaped groove 28 can limit the T-shaped plate 29 so that the T-shaped plate 29 will not fall out of the opening at the top of the first perimeter 7.

[0028] like Figure 4 As shown, the edge of the T-shaped plate 29 is fitted with the inner wall of the T-shaped groove 28 with a clearance, and each T-shaped plate 29 has an elastic gasket 24 installed on its side. The elastic gasket 24 has a "V" shaped structure, and one end of the elastic gasket 24 extends to the outside of the T-shaped groove 28. Each T-shaped groove 28 has a magnetic block 30 installed on its side. When the T-shaped plate 29 is located in the T-shaped groove 28, the side of the magnetic block 30 is attracted and fixed to the side of the T-shaped plate 29. In actual use, the elastic gasket 24 can be fixed in the T-shaped groove 28 by the magnetic block 30, which is convenient.

[0029] Furthermore, this utility model also proposes an electric motor, including an inner shell 17. A stator 26 is coaxially mounted on the inner side wall of the inner shell 17. A rotor 18 is coaxially mounted inside the stator 26. One end of the rotor 18 is coaxially connected to a motor shaft 27. Both ends of the motor shaft 27 pass through the rotor 18. In actual use, the motor shaft 27 can be driven to rotate through the cooperation of the stator 26 and the rotor 18, so that the motor can maintain normal operation.

[0030] like Figure 2 and Figure 3 As shown, one end of the inner shell 17 is provided with a rear end cover 25, one end of the motor shaft 27 passes through the rear end cover 25, and a fixing sleeve 22 is provided along the edge of the rear end cover 25. One end of the fixing sleeve 22 extends to the outside of the inner shell 17. A second perimeter 11 is installed on the edge of the fixing sleeve 22 away from the rear end cover 25. Fixing rings 20 are installed on both ends of the outer surface of the inner shell 17. The second perimeter 11 is stacked with the fixing rings 20, which can fix the rear end cover 25 inside the inner shell 17 and seal one end of the inner shell 17 to prevent external dust and other impurities from entering the inner shell 17 and hindering the operation of the stator 26 and rotor 18.

[0031] like Figure 2 and Figure 3 As shown, several fan blades 23 are installed on one end of the motor shaft 27 near the rear end cover 25. The fan blades 23 are located inside the fixed sleeve 22, and several ventilation slots 16 are provided on the side of the fixed sleeve 22 and one end of the inner shell 17. Two adjacent ventilation slots 16 are connected. In actual use, the motor shaft 27 will drive the fan blades 23 to rotate, blowing external air into the fixed sleeve 22 and discharging it along the ventilation slots 16 onto the outer surface of the inner shell 17.

[0032] like Figure 1 and Figure 3As shown, the inner shell 17 is fitted with an outer shell 3 on its side. Both ends of the outer shell 3 are fitted with connecting sleeves 1. Each fixed ring 20 has a connecting ring 10 installed on its adjacent surface. Each connecting sleeve 1 is fitted onto the corresponding connecting ring 10. The bottom of the outer shell 3 is provided with an exhaust duct 2 on the side away from the ventilation slot 16. In actual use, the outer shell 3 can be fitted onto the inner shell 17 so that the air blown by the fan blades 23 will flow between the outer shell 3 and the inner shell 17, cooling the heat generated by the operation of the inner shell 17 and the rotor 18 and stator 26 inside the inner shell 17. Then the air is discharged to the external environment through the exhaust duct 2.

[0033] like Figure 1 and Figure 2 As shown, the motor front cover structure is located at one end of the inner shell 17. Several mounting holes 21 are opened on the side of one of the fixing rings 20. Each mounting hole 21 is equipped with a fastening bolt 14. One end of the fastening bolt 14 passes through the first surrounding edge 7 and extends into the mounting hole 21 and is threaded into the mounting hole 21. One end of the motor shaft 27 passes through the cover plate 4. In the actual installation process, the workers pass one end of the fastening bolt 14 through the first surrounding edge 7 and insert one end of the fastening bolt 14 into the mounting hole 21 and tighten it. In this way, the cover plate 4 can be fixed on the inner shell 17 and fixed firmly.

[0034] When the first perimeter 7 is fixed to the fixing ring 20, one side of the elastic gasket 24 extends into the receiving groove 19. During actual installation, when the fastening bolt 14 is tightened, one end of the elastic gasket 24 will be squeezed and deformed by the first connecting block 5 and the second connecting block 8. The elasticity generated by the deformation of the elastic gasket 24 will push the first perimeter 7 and the fixing ring 20, preventing the fastening bolt 14 from falling off due to the vibration of the motor.

[0035] Furthermore, such as Figure 2 As shown, a sealing ring 6 is installed on one end of the cover plate 4 near the elastic gasket 24. When the cover plate 4 is connected to the inner shell 17, one end of the sealing ring 6 will abut against the end of the inner shell 17, sealing the connection between the cover plate 4 and the inner shell 17.

[0036] Furthermore, such as Figure 1 and Figure 2 As shown, several heat sinks 9 are installed on the outer surface of the inner shell 17. The heat sinks 9 can increase the contact area between the inner shell 17 and the air, thereby improving the heat dissipation effect.

[0037] Furthermore, such as Figure 1As shown, the inner shell 17 is provided with a protective cover 15 at one end near the fan blade 23. A third rim 12 is installed on the side edge of the protective cover 15. The third rim 12 is stacked on the second rim 11, and one side of the third rim 12 is fastened to the second rim 11 and the fixing ring 20 by connecting bolts. A dustproof net 13 is installed on the side of the protective cover 15. By fixing the protective cover 15 to the inner shell 17, the protective cover 15 can block the fan blade 23. In use, the air drawn in by the fan blade 23 will be filtered by the dustproof net 13 before being delivered to the space between the inner shell 17 and the outer shell 3, so as to prevent dust from adhering to the surface of the inner shell 17 and the heat sink 9 and affecting heat dissipation.

[0038] Specifically, during installation, the operator places the cover plate 4 onto the motor shaft 27, then contacts the side of the first perimeter 7 with the side of the fixing ring 20, causing one end of the elastic washer 24 to move into the receiving groove 19. The operator then passes the fastening bolt 14 through the first perimeter 7 and inserts it into the mounting hole 21 to tighten it, thus fixing the cover plate 4 to one end of the inner shell 17. During the fixing process, the elastic washer 24 is deformed by the first connecting block 5 and the second connecting block 8. The elasticity of the elastic washer 24 increases the friction between the fastening bolt 14 and the internal thread of the mounting hole 21, preventing the fastening bolt 14 from loosening and improving the installation effect. Afterwards, the outer shell 3 is placed onto the inner shell 17 from the end closest to the fan blade 23, and the connecting sleeve 1 and the connecting ring 10 are fixed together with bolts. First, the third edge 12 on the protective cover 15 is stacked on the second edge 11. Then, the third edge 12 and the second edge 11 are fixed to the fixing ring 20 by connecting bolts. When in use, the stator 26 and the rotor 18 work to drive the motor shaft 27 to rotate. The motor shaft 27 drives the fan blade 23 to rotate. The fan blade 23 delivers the outside air to the inside of the fixing sleeve 22 after being filtered by the dustproof net 13. Then, it is delivered to the space between the outer shell 3 and the inner shell 17 through the ventilation groove 16. The air flows in the space between the outer shell 3 and the inner shell 17. The heat generated by the operation of the stator 26 and the rotor 18 is transferred to the heat sink 9 through the inner shell 17. The air flow cools the inner shell 17 and the heat sink 9. Then, the air is discharged to the external environment through the exhaust groove 2, thus completing the heat dissipation of the motor.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A motor front end cover structure, comprising a cover plate (4), characterized in that: The cover plate (4) has a ring structure, and the edge of the cover plate (4) is equipped with a first rim (7). Several first connecting blocks (5) are installed at equal intervals on the top of the first perimeter (7). A T-shaped groove (28) is opened on one side of each first connecting block (5), and a T-shaped plate (29) is provided inside each T-shaped groove (28). The edge of the T-shaped plate (29) is fitted with the inner wall of the T-shaped groove (28) with a gap. An elastic gasket (24) is installed on the side of each T-shaped plate (29). The elastic gasket (24) has a "V" shaped structure, and one end of the elastic gasket (24) extends to the outside of the T-shaped groove (28).

2. The motor front end cover structure according to claim 1, characterized in that: Each T-slot (28) has a magnetic block (30) installed on its side. When the T-plate (29) is located in the T-slot (28), the side of the magnetic block (30) is attracted and fixed to the side of the T-plate (29).

3. The motor front end cover structure according to claim 1, characterized in that: A sealing ring (6) is installed on the end of the cover plate (4) near the elastic gasket (24).

4. An electric motor, comprising an inner housing (17), a stator (26) coaxially mounted on the inner sidewall of the inner housing (17), a rotor (18) coaxially disposed inside the stator (26), a motor shaft (27) coaxially connected to one end of the rotor (18), and both ends of the motor shaft (27) penetrating the rotor (18), characterized in that: One end of the inner shell (17) is provided with a rear end cover (25), one end of the motor shaft (27) passes through the rear end cover (25), and the edge of the rear end cover (25) is provided with a fixing sleeve (22). One end of the fixing sleeve (22) extends to the outside of the inner shell (17). A second perimeter (11) is installed on the edge of the fixing sleeve (22) away from the rear end cover (25). Fixing rings (20) are installed on both ends of the outer surface of the inner shell (17). The second perimeter (11) is stacked with the fixing rings (20). Several fan blades (23) are installed on one end of the motor shaft (27) near the rear end cover (25). The fan blades (23) are located inside the fixed sleeve (22). Several ventilation slots (16) are opened on the side of the fixed sleeve (22) and one end of the inner shell (17). Two adjacent ventilation slots (16) are connected. The inner shell (17) is fitted with an outer shell (3) on its side. Both ends of the outer shell (3) are fitted with connecting sleeves (1). Each fixing ring (20) is fitted with a connecting ring (10) on its adjacent surface. Each connecting sleeve (1) is fitted onto the corresponding connecting ring (10). An exhaust duct (2) is provided on the bottom of the outer shell (3) away from the ventilation duct (16). One of the fixing rings (20) has several mounting holes (21) on its side, and each mounting hole (21) is provided with a fastening bolt (14). It also includes a motor front end cover structure as described in any one of claims 1-3, wherein the motor front end cover structure is disposed at one end of the inner shell (17).

5. The motor according to claim 4, characterized in that: One end of the fastening bolt (14) passes through the first perimeter (7) and extends into the mounting hole (21) and is threaded into the mounting hole (21), and one end of the motor shaft (27) passes through the cover plate (4). When the first perimeter (7) is fixed to the fixing ring (20), one side of the elastic gasket (24) extends into the receiving groove (19).

6. The motor according to claim 4, characterized in that: Several heat sinks (9) are installed on the outer surface of the inner shell (17).

7. The motor according to claim 4, characterized in that: The inner shell (17) is provided with a protective cover (15) at one end near the fan blade (23). A third rim (12) is installed on the side edge of the protective cover (15). The third rim (12) is stacked on the second rim (11), and one side of the third rim (12) is fastened to the second rim (11) and the fixing ring (20) by connecting bolts. A dustproof net (13) is installed on the side of the protective cover (15).

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