A new type of low-noise brushless AC / DC motor

Abstract

The utility model relates to a brushless DC motor related technical field especially relates to a novel low noise brushless alternating current DC motor, including brushless motor, the lower surface fixed mounting of brushless motor has the mounting panel, the lower surface fixed connection of mounting panel has the support plate, the lower surface fixed mounting of support plate has the lifting plate. This novel low noise brushless alternating current DC motor, through brushless motor, mounting panel, support plate, lifting plate, limit block, connecting rod, steel cover, damping spring, bottom plate, shell, damping rubber pad, guide rail and the setting of support seat, when brushless motor produces the vibration, the support plate will be through the connecting rod and press down the steel cover, the steel cover will produce the upward rebound force when being pressed, played the effect of damping, secondly, the support plate will be with the lifting plate and carry on the lifting movement when pressing down, the outer wall of lifting plate will rub with the inner wall of damping rubber pad at this moment, also played the effect of damping.

Description

Technical Field

[0001] This utility model relates to the technical field of brushless DC motors, and in particular to a novel low-noise brushless AC / DC motor. Background Technology

[0002] Brushless AC / DC motors, also known as brushless DC motors, are DC motors that use electronic commutation to replace traditional mechanical brushes and commutators. They have significant advantages such as high efficiency, high reliability, and low noise, and are widely used in home appliances, automobiles, industrial automation, and other fields. Brushless DC motors are sometimes used in daily life. In order to avoid affecting customers' lives, it is necessary to ensure that the noise of these DC motors is low. Therefore, there is a particular need for a new type of low-noise brushless AC / DC motor.

[0003] However, most of the existing new low-noise brushless AC / DC motors do not have a structure to reduce noise. Brushless DC motors will make noise when they are working, and the noise will affect the user's life.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN110504766A that discloses a brushless DC motor. The patent states that "in the current market environment, the combined use of brushless motors and planetary gear reducers is applied in various industrial fields. Because the drive structure formed by directly connecting the brushless motor and planetary gear reducer together is large in size and weight, existing technologies employ an inner stator and outer rotor structure, with the planetary gears installed inside the inner stator, achieving the advantages of high output torque, small size, and light weight. A gear ring is installed inside the inner stator for meshing with the planetary gears; however, there is a certain distance between the gear ring and the inner stator, reducing the usable space within the inner stator." The beneficial effect of the brushless DC motor provided by this invention is that, compared to existing technologies, the brushless DC motor of this invention adopts a hollow cup winding structure. The coil winding of the hollow cup winding structure is dense, resulting in a higher energy density compared to the iron core winding structure for the same volume. The gear ring is integrally connected inside the second cylinder, with no gap between them. This increases the usable space within the second cylinder, resulting in a larger usable space within the rotor. This allows for larger dimensions of the structure installed within the rotor, thereby increasing the output shaft torque. However, brushless motors lack vibration damping during operation, making them prone to vibration and generating significant noise, which can disrupt the user's life.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Summary of the Invention

[0006] The purpose of this invention is to provide a novel low-noise brushless AC / DC motor to solve the problem mentioned in the background art that most existing low-noise brushless AC / DC motors do not have a noise reduction structure, and brushless DC motors emit noise during operation, which affects the user's life.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a novel low-noise brushless AC / DC motor, comprising a brushless motor, a mounting plate fixedly installed on the lower surface of the brushless motor, a support plate fixedly connected to the lower surface of the mounting plate, a lifting plate fixedly installed on the lower surface of the support plate, limit blocks provided at both ends of the lifting plate, a connecting rod through-mounted at one end of the support plate, a steel cover fixedly connected to one end of the connecting rod, a vibration damping spring fixedly installed on the other side of the steel cover, a base plate fixedly connected to the other end of the vibration damping spring, a housing fixedly installed on the upper surface of the base plate, a damping rubber pad adhered to the inner wall of the housing, guide rails fixedly installed at both ends of the housing, and a support base fixedly connected to the lower surface of the base plate.

[0008] Preferably, the lifting plate forms a sliding structure with the guide rail via a limiting block.

[0009] Preferably, the steel cover forms a telescopic structure with the base plate via a vibration damping spring.

[0010] Preferably, the inner wall of the damping rubber pad is in contact with the outer wall of the lifting plate.

[0011] Preferably, connecting blocks are fixedly installed on both sides of the support base, a connecting groove is formed on one side of the connecting block, a sliding groove is formed inside the connecting block, a movable slider is provided inside the sliding groove, a screw is welded to one side of the slider, a nut is threaded to one end of the screw, and a support block is fixedly installed on one side of the slider.

[0012] Preferably, the slider and the connecting block form a sliding structure through a groove.

[0013] Preferably, the screw and the connecting block form a sliding structure through the connecting groove, and one end of the screw passes through the connecting groove and is threadedly connected to the nut.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This novel low-noise brushless AC / DC motor, through the arrangement of a brushless motor, mounting plate, support plate, lifting plate, limit block, connecting rod, steel cover, vibration damping spring, base plate, outer shell, damping rubber pad, guide rail, and support base, when the brushless motor vibrates, the support plate will press down on the steel cover through the connecting rod. When the steel cover is under pressure, it will generate an upward rebound force, which will achieve the vibration damping effect. Secondly, when the support plate presses down, it will carry the lifting plate to move up and down. At this time, the outer wall of the lifting plate will rub against the inner wall of the damping rubber pad, which will also achieve the vibration damping effect. Vibration damping can reduce the noise generated by the brushless motor and prevent excessive noise from affecting the user's life. Attached Figure Description

[0015] Figure 1 This is a side view of the appearance structure of this utility model; Figure 2 This is a schematic diagram of the cooperation structure between the support plate and the lifting plate of this utility model; Figure 3 This is a schematic diagram of the structure of the steel cover and the vibration damping spring of this utility model. Figure 4 This is a schematic diagram of the interaction between the slider and the support block of this utility model.

[0016] In the diagram: 1. Brushless motor; 2. Mounting plate; 3. Support plate; 4. Lifting plate; 5. Limit block; 6. Connecting rod; 7. Steel cover; 8. Vibration damping spring; 9. Base plate; 10. Outer shell; 11. Damping rubber pad; 12. Guide rail; 13. Support base; 14. Connecting block; 15. Connecting groove; 16. Slide groove; 17. Slider; 18. Screw; 19. Nut; 20. Support block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a novel low-noise brushless AC / DC motor, including a brushless motor 1, a mounting plate 2 fixedly mounted on the lower surface of the brushless motor 1, a support plate 3 fixedly connected to the lower surface of the mounting plate 2, a lifting plate 4 fixedly mounted on the lower surface of the support plate 3, limit blocks 5 provided at both ends of the lifting plate 4, a connecting rod 6 through-mounted at one end of the support plate 3, a steel cover 7 fixedly connected to one end of the connecting rod 6, a vibration damping spring 8 fixedly mounted on the other side of the steel cover 7, a base plate 9 fixedly connected to the other end of the vibration damping spring 8, a housing 10 fixedly mounted on the upper surface of the base plate 9, a damping rubber pad 11 adhered to the inner wall of the housing 10, and guide rails 12 fixedly mounted at both ends of the housing 10. A support base 13 is fixedly connected to the lower surface of plate 9. Through the arrangement of brushless motor 1, mounting plate 2, support plate 3, lifting plate 4, limit block 5, connecting rod 6, steel cover 7, damping spring 8, base plate 9, outer shell 10, damping rubber pad 11, guide rail 12 and support base 13, when brushless motor 1 vibrates, support plate 3 will press down steel cover 7 through connecting rod 6. When steel cover 7 is under pressure, it will generate an upward rebound force, which will play a role in damping vibration. Secondly, when support plate 3 presses down, it will carry lifting plate 4 to move up and down. At this time, the outer wall of lifting plate 4 will rub against the inner wall of damping rubber pad 11, which will also play a role in damping vibration. Vibration reduction can reduce the noise generated by brushless motor 1 and avoid excessive noise affecting the user's life.

[0019] Furthermore, the lifting plate 4 forms a sliding structure with the guide rail 12 through the limiting block 5. With the setting of the limiting block 5 and the guide rail 12, when the lifting plate 4 moves up and down, the limiting block 5 will slide on the guide rail 12, and the limiting block 5 can limit the up and down movement of the lifting plate 4.

[0020] Furthermore, the steel cover 7 forms a telescopic structure with the base plate 9 through the damping spring 8. With the damping spring 8, when the damping spring 8 is compressed, it will generate an upward rebound force, which will achieve the effect of damping.

[0021] Furthermore, the inner wall of the damping rubber pad 11 is in contact with the outer wall of the lifting plate 4. With the setting of the damping rubber pad 11, when the lifting plate 4 moves up and down, its outer wall will rub against the inner wall of the damping rubber pad 11, which has the effect of vibration reduction.

[0022] Furthermore, connecting blocks 14 are fixedly installed on both sides of the support base 13. A connecting groove 15 is formed on one side of the connecting block 14, and a sliding groove 16 is formed inside the connecting block 14. A movable slider 17 is disposed inside the sliding groove 16. A screw 18 is welded to one side of the slider 17, and a nut 19 is threaded to one end of the screw 18. A support block 20 is fixedly installed on one side of the slider 17. Through the arrangement of the connecting blocks 14, connecting groove 15, sliding groove 16, slider 17, screw 18, nut 19, and support block 20, the support base 13 can be... When the support is in place, loosen the nut 19 and move the support block 20. After the support block 20 moves to the appropriate position, tighten the nut 19 to fix it. When the support block 20 slides, the slider 17 will slide in the groove 16. The slider 17 can assist and limit the movement of the support block 20. The support block 20 can provide stable support for the support base 13, making the support base 13 more stable and avoiding noise caused by instability of the support base 13. In addition, the two support blocks 20 can be fixed at different heights, and the support base 13 remains stable on a plane with a certain degree of inclination.

[0023] Furthermore, the slider 17 forms a sliding structure with the connecting block 14 through the slide groove 16. With the setting of the slide groove 16 and the slider 17, the slider 17 can move up and down with the support block 20 when sliding in the slide groove 16, thereby supporting the support block 20 at different heights. The two support blocks 20 can be at different heights and can perform support work in different working environments.

[0024] Furthermore, the screw 18 forms a sliding structure with the connecting block 14 through the connecting groove 15. One end of the screw 18 passes through the connecting groove 15 and is threadedly connected to the nut 19. Through the setting of the screw 18 and the nut 19, the position of the slider 17 can be fixed, thereby fixing the height of the support block 20.

[0025] Working principle: When the brushless motor 1 vibrates, the support plate 3 will press down on the steel cover 7 through the connecting rod 6. When the steel cover 7 is under pressure, it will generate an upward rebound force, which will have the effect of vibration reduction. Secondly, when the support plate 3 presses down, it will carry the lifting plate 4 to move up and down. At this time, the outer wall of the lifting plate 4 will rub against the inner wall of the damping rubber pad 11. When supporting the support seat 13, the nut 19 is loosened and the support block 20 is moved. When the support block 20 moves to the appropriate position, the nut 19 is tightened to fix it. When the support block 20 slides, the slider 17 will slide in the slide groove 16. The slider 17 can assist and limit the movement of the support block 20. The support block 20 can provide stable support for the support seat 13.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel low-noise brushless AC / DC motor, comprising a brushless motor (1), characterized in that: A mounting plate (2) is fixedly installed on the lower surface of the brushless motor (1). A support plate (3) is fixedly connected to the lower surface of the mounting plate (2). A lifting plate (4) is fixedly installed on the lower surface of the support plate (3). Limit blocks (5) are provided at both ends of the lifting plate (4). A connecting rod (6) is installed through one end of the support plate (3). A steel cover (7) is fixedly connected to one end of the connecting rod (6). A damping spring (8) is fixedly installed on the other side of the steel cover (7). A base plate (9) is fixedly connected to the other end of the damping spring (8). A shell (10) is fixedly installed on the upper surface of the base plate (9). A damping rubber pad (11) is adhered to the inner wall of the shell (10). Guide rails (12) are fixedly installed at both ends of the shell (10). A support seat (13) is fixedly connected to the lower surface of the base plate (9).

2. The novel low-noise brushless AC / DC motor according to claim 1, characterized in that: The lifting plate (4) forms a sliding structure with the guide rail (12) through the limiting block (5).

3. The novel low-noise brushless AC / DC motor according to claim 1, characterized in that: The steel cover (7) forms a telescopic structure with the base plate (9) through the damping spring (8).

4. The novel low-noise brushless AC / DC motor according to claim 1, characterized in that: The inner wall of the damping rubber pad (11) is in contact with the outer wall of the lifting plate (4).

5. A novel low-noise brushless AC / DC motor according to claim 1, characterized in that: Connecting blocks (14) are fixedly installed on both sides of the support base (13). A connecting groove (15) is opened on one side of the connecting block (14). A sliding groove (16) is opened inside the connecting block (14). A movable slider (17) is provided inside the sliding groove (16). A screw (18) is welded to one side of the slider (17). A nut (19) is threaded to one end of the screw (18). A support block (20) is fixedly installed on one side of the slider (17).

6. A novel low-noise brushless AC / DC motor according to claim 5, characterized in that: The slider (17) forms a sliding structure with the connecting block (14) through the groove (16).

7. A novel low-noise brushless AC / DC motor according to claim 5, characterized in that: The screw (18) forms a sliding structure with the connecting block (14) through the connecting groove (15), and one end of the screw (18) passes through the connecting groove (15) and is threadedly connected to the nut (19).

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