Permanent magnet direct current micromotor with sealing terminal structure

Abstract

The utility model discloses a permanent magnet direct current micromotor with a sealing terminal structure, which comprises a motor shell, one side of the motor shell is movably connected with a connecting shaft, one side outside the motor shell is fixedly connected with a mounting disc, and the center line of the mounting disc and the center line of the motor shell are on the same horizontal plane. According to the permanent magnet direct current micromotor with the sealing terminal structure, the groove is formed in one side of the motor shell of the permanent magnet direct current micromotor, the threaded sleeve is installed in the groove through the outer threaded cylinder, the sealing ring is installed in the threaded sleeve, and the sealing ring is attached to the outer portion of the connecting shaft, so that the sealing performance can be effectively improved; and the positioning ring outside the sealing ring is attached to the interior of the threaded sleeve so that the sealing ring can be positioned, meanwhile, the rubber ring inside the groove is attached to one side of the threaded sleeve so that the sealing effect between the threaded sleeve and the motor shell can be effectively improved, and the problem that the sealing effect is insufficient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of micromotors, in particular to a permanent magnet direct current micromotors with a sealed terminal structure. Background Art

[0002] Permanent magnet DC motors are used in many types of electrical equipment, especially in the field of household appliances. Permanent magnet DC motors are the most mainstream driving devices because of their stable operation and high safety. They can meet the needs of daily household appliances. In addition, permanent magnet DC motors have various sizes, so they can also meet the driving needs in some small household appliances. However, permanent magnet DC micromotors used in small household appliances still have some defects in use. After the motor is installed, the sealing effect is not good, which makes the inside of the motor susceptible to moisture, thus seriously affecting the normal use of the motor.

[0003] Now a new type of permanent magnet DC micromotor with a sealed terminal structure is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a permanent magnet DC micro motor with a sealed terminal structure to solve the problem of insufficient sealing effect mentioned in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a permanent magnet DC micromotor with a sealed terminal structure, comprising a motor housing, one side of the motor housing is movably connected to a connecting shaft, one side of the motor housing is fixedly connected to a mounting plate, the center line of the mounting plate is on the same horizontal plane as the center line of the motor housing, and the other side of the motor housing is movably connected to an end plate;

[0006] A groove is provided on one side of the motor housing, an external threaded barrel is fixedly connected to one side of the groove, a threaded sleeve is movably connected to the outside of the external threaded barrel, a sealing ring is movably connected to one side of the threaded sleeve, a positioning ring is fixedly connected to one side of the outside of the sealing ring, the positioning ring is movably connected to the external threaded barrel, and a rubber ring is movably connected to one side of the groove.

[0007] Preferably, the rubber ring is movably connected to the threaded sleeve, and the center line of the external threaded sleeve and the center line of the connecting shaft are on the same horizontal plane.

[0008] Preferably, the sealing ring is movably connected to the connecting shaft, and the positioning ring is movably connected to the threaded sleeve.

[0009] Preferably, an annular groove is provided on one side of the mounting plate, a rubber ring is fixedly connected to the inside of the annular groove, a mounting hole is provided on one side of the rubber ring, a mounting bolt is movably connected to one side of the mounting plate, the mounting bolt passes through the mounting plate and the mounting hole and extends to one side of the rubber ring, and a first hexagonal groove is provided on one side of the mounting bolt.

[0010] Preferably, the mounting holes opened on one side of the rubber ring are arranged at equal intervals, and the center line of the annular groove and the center line of the mounting plate are on the same vertical plane.

[0011] Preferably, a fixing plate is fixedly connected to one side of the end plate, a fixing groove is provided on the outside of one side of the motor housing, one end of the fixing plate is movably connected to a fixing bolt, one end of the fixing bolt is provided with a second hexagonal groove, the fixing bolt passes through the fixing plate and is threadedly connected to the motor housing, a cavity is provided inside the end plate, a fixing plate is fixedly connected to one side of the cavity, a heat conducting plate is fixedly connected to one side of the fixing plate, a through hole is provided on one side of the end plate, a through groove is provided on the outside of the end plate, and a dust net is fixedly connected to one side of the cavity.

[0012] Preferably, the through grooves formed on the outside of the end plate are arranged at equal intervals, and the heat conducting plate passes through the fixing plate and extends to the inside of the motor housing.

[0013] Preferably, the heat conducting plates on one side of the fixing plate are arranged at equal intervals, and the through holes are connected to the interior of the cavity.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the permanent magnet DC micromotor with a sealed terminal structure not only effectively ensures the sealing performance and improves the stability after installation, but also achieves rapid heat dissipation;

[0015] (1) A groove, a threaded sleeve, a sealing ring, an external threaded sleeve, a positioning ring and a rubber ring are provided. A groove is provided on one side of the motor housing of the permanent magnet DC micromotor. A threaded sleeve is installed inside the groove through an external threaded sleeve, and a sealing ring is installed inside the threaded sleeve. The sealing ring is attached to the outside of the connecting shaft to effectively improve the sealing performance, and the positioning ring outside the sealing ring is attached to the inside of the threaded sleeve to position the sealing ring. At the same time, the rubber ring inside the groove is attached to one side of the threaded sleeve to effectively improve the sealing effect between the threaded sleeve and the motor housing, thereby effectively improving the sealing performance inside the motor.

[0016] (2) By providing a mounting plate, an annular groove, a rubber ring, a mounting bolt, a first hexagonal groove and a mounting hole, when installing the micromotor, the mounting plate is attached to one side of the mounting position, and then the mounting bolt is passed through the mounting plate and the mounting hole to connect with the home appliance, and then the mounting bolt is rotated through the first hexagonal groove to position the mounting plate, so that the micromotor is fixed by the mounting plate, and the rubber ring inside the annular groove is attached between the mounting plate and the home appliance, which can effectively improve the stability of the micromotor and prevent loosening due to vibration during operation, thereby achieving the goal of improving the stability of the micromotor installation;

[0017] (3) An end plate, a fixing plate, a heat conducting sheet, a cavity, a through slot, a dust screen and a through hole are provided. An end plate is installed on one side of the motor housing of the micro motor, and a fixing plate is installed inside the cavity. The heat conducting sheet inside the fixing plate extends to the inside of the motor housing. The heat inside the motor housing can be discharged through the contact between the heat conducting sheet and the air inside the motor housing. The through slot and through hole provided on the outside of the end plate can maintain air circulation inside the cavity, thereby dissipating the heat inside the cavity through air circulation, thereby achieving rapid heat dissipation during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the side structure of the threaded sleeve of the utility model;

[0020] Figure 3 This is a schematic diagram of the side structure of the end plate of the utility model;

[0021] Figure 4 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1. motor housing; 2. mounting plate; 3. groove; 4. threaded sleeve; 5. sealing ring; 6. connecting shaft; 7. external threaded cylinder; 8. positioning ring; 9. rubber ring; 10. annular groove; 11. rubber ring; 12. mounting bolt; 13. first hexagonal groove; 14. end plate; 15. fixing plate; 16. heat conducting plate; 17. cavity; 18. fixing plate; 19. second hexagonal groove; 20. fixing bolt; 21. fixing groove; 22. mounting hole; 23. through groove; 24. dust net; 25. through hole. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1: Please refer to Figure 1-4 A permanent magnet DC micromotor with a sealed terminal structure comprises a motor housing 1, a connecting shaft 6 is movably connected to one side of the motor housing 1, a mounting plate 2 is fixedly connected to one side of the outside of the motor housing 1, the center line of the mounting plate 2 is on the same horizontal plane as the center line of the motor housing 1, and an end plate 14 is movably connected to the other side of the motor housing 1;

[0025] A groove 3 is provided on one side of the motor housing 1, an external threaded tube 7 is fixedly connected to one side of the groove 3, a threaded sleeve 4 is movably connected to the outside of the external threaded tube 7, a sealing ring 5 is movably connected to one side of the threaded sleeve 4, a positioning ring 8 is fixedly connected to one side of the outside of the sealing ring 5, the positioning ring 8 is movably connected to the external threaded tube 7, and a rubber ring 9 is movably connected to one side of the groove 3;

[0026] The rubber ring 9 is movably connected to the threaded sleeve 4, and the center line of the external threaded sleeve 7 and the center line of the connecting shaft 6 are on the same horizontal plane;

[0027] The sealing ring 5 is movably connected to the connecting shaft 6, and the positioning ring 8 is movably connected to the threaded sleeve 4;

[0028] Specifically, Figure 1 and Figure 2 As shown, a groove 3 is opened on one side of the motor housing 1 of the permanent magnet DC micromotor, a threaded sleeve 4 is installed inside the groove 3 through an external threaded tube 7, and a sealing ring 5 is installed inside the threaded sleeve 4. The sealing ring 5 is fitted on the outside of the connecting shaft 6 to effectively improve the sealing performance, and the positioning ring 8 outside the sealing ring 5 is fitted on the inside of the threaded sleeve 4 to position the sealing ring 5. At the same time, the rubber ring 9 inside the groove 3 is fitted on one side of the threaded sleeve 4 to effectively improve the sealing effect between the threaded sleeve 4 and the motor housing 1, thereby effectively improving the sealing performance inside the motor.

[0029] Embodiment 2: An annular groove 10 is provided on one side of the mounting plate 2, a rubber ring 11 is fixedly connected inside the annular groove 10, a mounting hole 22 is provided on one side of the rubber ring 11, a mounting bolt 12 is movably connected on one side of the mounting plate 2, the mounting bolt 12 passes through the mounting plate 2 and the mounting hole 22 and extends to one side of the rubber ring 11, and a first hexagonal groove 13 is provided on one side of the mounting bolt 12;

[0030] The mounting holes 22 opened on one side of the rubber ring 11 are arranged at equal intervals, and the center line of the annular groove 10 and the center line of the mounting plate 2 are on the same vertical plane;

[0031] Specifically, Figure 1 , Figure 2 and Figure 4 As shown, when installing the micromotor, the mounting plate 2 is attached to one side of the mounting position, and then the mounting bolt 12 is passed through the mounting plate 2 and the mounting hole 22 to connect with the home appliance, and then the mounting bolt 12 is rotated through the first hexagonal groove 13 to position the mounting plate 2, so that the micromotor is fixed by the mounting plate 2, and the rubber ring 11 inside the annular groove 10 is attached between the mounting plate 2 and the home appliance, which can effectively improve the stability of the micromotor and prevent loosening due to vibration during operation, thereby improving the stability of the installation of the micromotor.

[0032] Embodiment 3: A fixing plate 18 is fixedly connected to one side of the end plate 14, a fixing groove 21 is provided on the outside of one side of the motor housing 1, a fixing bolt 20 is movably connected to one end of the fixing plate 18, a second hexagonal groove 19 is provided on one end of the fixing bolt 20, the fixing bolt 20 passes through the fixing plate 18 and is threadedly connected to the motor housing 1, a cavity 17 is provided inside the end plate 14, a fixing plate 15 is fixedly connected to one side of the cavity 17, a heat conducting plate 16 is fixedly connected to one side of the fixing plate 15, a through hole 25 is provided on one side of the end plate 14, a through groove 23 is provided on the outside of the end plate 14, and a dust screen 24 is fixedly connected to one side of the cavity 17;

[0033] The through slots 23 formed on the outside of the end plate 14 are arranged at equal intervals, and the heat conducting sheet 16 penetrates the fixing plate 15 and extends to the inside of the motor housing 1;

[0034] The heat conducting sheets 16 on one side of the fixing plate 15 are arranged at equal intervals, and the through holes 25 are connected to the interior of the cavity 17;

[0035] Specifically, Figure 1 and Figure 3 As shown, an end plate 14 is installed on one side of the micromotor housing 1, and a fixing plate 15 is installed inside the cavity 17. The heat conductive sheet 16 inside the fixing plate 15 extends to the inside of the motor housing 1. The heat inside the motor housing 1 can be discharged through the contact between the heat conductive sheet 16 and the air inside the motor housing 1, and the through groove 23 and the through hole 25 opened on the outside of the end plate 14 can maintain air circulation inside the cavity 17, so that the heat inside the cavity 17 can be discharged through air circulation, thereby achieving rapid heat dissipation during operation.

[0036] Working principle: When the utility model is in use, a groove 3 is opened on one side of the motor housing 1 of the permanent magnet DC micromotor, a threaded sleeve 4 is installed inside the groove 3 through an external threaded tube 7, and a sealing ring 5 is installed inside the threaded sleeve 4. The sealing ring 5 is attached to the outside of the connecting shaft 6 to effectively improve the sealing performance, and the positioning ring 8 outside the sealing ring 5 is attached to the inside of the threaded sleeve 4 to position the sealing ring 5. At the same time, the rubber ring 9 inside the groove 3 is attached to one side of the threaded sleeve 4 to effectively improve the sealing effect between the threaded sleeve 4 and the motor housing 1. When installing the micromotor, the mounting plate 2 is attached to one side of the installation position, and then the mounting bolt 12 is passed through the mounting plate 2 and the mounting hole 22 to connect with the home appliance, and then through the first hexagonal groove 13 rotates the mounting bolt 12 to position the mounting disk 2, thereby fixing the micromotor through the mounting disk 2, and the rubber ring 11 inside the annular groove 10 fits between the mounting disk 2 and the home appliance, which can effectively improve the stability of the micromotor and prevent it from loosening due to vibration during operation. An end plate 14 is installed on one side of the motor housing 1 of the micromotor, and a fixing plate 15 is installed inside the cavity 17. The heat conductive sheet 16 inside the fixing plate 15 extends to the inside of the motor housing 1, and the heat inside the motor housing 1 can be discharged through the contact between the heat conductive sheet 16 and the air inside the motor housing 1, and the through groove 23 and the through hole 25 opened on the outside of the end plate 14 can keep the air circulation inside the cavity 17, so that the heat inside the cavity 17 can be discharged through air circulation.

Claims

1. A permanent magnet DC micromotor with a sealed terminal structure, comprising a motor housing (1), characterized in that: A connecting shaft (6) is movably connected to one side of the motor housing (1), a mounting plate (2) is fixedly connected to one side of the outside of the motor housing (1), a center line of the mounting plate (2) and a center line of the motor housing (1) are on the same horizontal plane, and an end plate (14) is movably connected to the other side of the motor housing (1); A groove (3) is provided on one side of the motor housing (1); an external threaded tube (7) is fixedly connected to one side of the groove (3); a threaded sleeve (4) is movably connected to the outside of the external threaded tube (7); a sealing ring (5) is movably connected to one side of the threaded sleeve (4); a positioning ring (8) is fixedly connected to one side of the outside of the sealing ring (5); the positioning ring (8) is movably connected to the external threaded tube (7); and a rubber ring (9) is movably connected to one side of the groove (3).

2. A permanent magnet DC micromotor with a sealed terminal structure according to claim 1, characterized in that: The rubber ring (9) is movably connected to the threaded sleeve (4), and the center line of the external threaded sleeve (7) and the center line of the connecting shaft (6) are on the same horizontal plane.

3. A permanent magnet DC micromotor with a sealed terminal structure according to claim 1, characterized in that: The sealing ring (5) is movably connected to the connecting shaft (6), and the positioning ring (8) is movably connected to the threaded sleeve (4).

4. A permanent magnet DC micromotor with a sealed terminal structure according to claim 1, characterized in that: An annular groove (10) is provided on one side of the mounting plate (2), a rubber ring (11) is fixedly connected to the inside of the annular groove (10), a mounting hole (22) is provided on one side of the rubber ring (11), a mounting bolt (12) is movably connected to one side of the mounting plate (2), the mounting bolt (12) passes through the mounting plate (2) and the mounting hole (22) and extends to one side of the rubber ring (11), and a first hexagonal groove (13) is provided on one side of the mounting bolt (12).

5. A permanent magnet DC micromotor with a sealed terminal structure according to claim 4, characterized in that: The mounting holes (22) opened on one side of the rubber ring (11) are arranged at equal intervals, and the center line of the annular groove (10) and the center line of the mounting plate (2) are on the same vertical plane.

6. A permanent magnet DC micromotor with a sealed terminal structure according to claim 1, characterized in that: A fixing plate (18) is fixedly connected to one side of the end plate (14); a fixing groove (21) is provided on the outside of one side of the motor housing (1); a fixing bolt (20) is movably connected to one end of the fixing plate (18); a second hexagonal groove (19) is provided on one end of the fixing bolt (20); the fixing bolt (20) passes through the fixing plate (18) and is threadedly connected to the motor housing (1); a cavity (17) is provided inside the end plate (14); a fixing plate (15) is fixedly connected to one side of the cavity (17); a heat conducting plate (16) is fixedly connected to one side of the fixing plate (15); a through hole (25) is provided on one side of the end plate (14); a through groove (23) is provided on the outside of the end plate (14); and a dustproof net (24) is fixedly connected to one side of the cavity (17).

7. A permanent magnet DC micromotor with a sealed terminal structure according to claim 6, characterized in that: The through slots (23) formed on the outside of the end plate (14) are arranged at equal intervals, and the heat conducting sheet (16) passes through the fixing plate (15) and extends to the inside of the motor housing (1).

8. The permanent magnet DC micromotor with a sealed terminal structure according to claim 6, characterized in that: The heat conducting plates (16) on one side of the fixing plate (15) are arranged at equal intervals, and the through holes (25) are connected to the interior of the cavity (17).

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