CN219529616U

CN219529616U - Ball bearing type supporting mechanism for brushless motor with combined inner rotor and outer rotor

Info

Publication number: CN219529616U
Application number: CN202223175351.5U
Authority: CN
Inventors: 李远培
Original assignee: Jiangsu Willtron Tech Co ltd
Current assignee: Jiangsu Willtron Tech Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-08-15
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a ball bearing type supporting mechanism for a brushless motor with combined inner and outer rotors, which comprises an upper shell, a lower shell and a motor main body arranged between the upper shell and the lower shell, wherein a ball bearing is arranged in the motor main body, the ball bearing comprises an inner ring, an outer ring and balls which are arranged in the motor main body, the ball bearing is positioned between the inner ring and the outer ring, and a sealing component used for improving the tightness between the inner ring and the outer ring is arranged outside the balls. The movable block moves in the strip-shaped groove through the spring, and can apply external force to the rotating ring to enable the rotating ring to generate feeding quantity, so that sealing and laminating rotation between the rotating ring and the rotating groove are guaranteed, the outer side diameter of the rotating ring is larger than that of the rotating groove, external force can be applied to the rotating ring, sealing and laminating rotation between the rotating ring and the rotating groove is guaranteed, sealing performance between the inner ring and the outer ring is improved, and service life of the ball bearing is prolonged.

Description

Ball bearing type supporting mechanism for brushless motor with combined inner rotor and outer rotor

Technical Field

The utility model particularly relates to a ball bearing type supporting mechanism for a brushless motor by combining an inner rotor and an outer rotor.

Background

The brushless motor is composed of a motor main body and a driver, and is a typical electromechanical integrated product. Because the brushless DC motor operates in a self-controlled mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under heavy load under variable frequency speed regulation, and the rotor assembly is arranged on a rotor shaft and rotates in a stator assembly. The rotor shaft is supported for rotation in the generator housing using a ball bearing assembly.

When the existing ball bearing is used, the phenomenon of abrasion clearance can be generated along with the long-term relative rotation of the inner ring and the outer ring of the ball bearing, so that the sealing performance is reduced, and the service life of the ball bearing is reduced.

Disclosure of Invention

The present utility model is directed to a ball bearing type supporting mechanism for a brushless motor with an inner rotor and an outer rotor, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an inside and outside rotor combines ball bearing formula supporting mechanism for brushless motor, includes casing, lower casing and installs the motor main part between last casing and lower casing, be provided with ball bearing in the motor main part, ball bearing is including installing inner circle, outer lane and the ball in the motor main part, is located between inner circle, the outer lane to set up in the ball outside and be provided with the leakproofness seal assembly that is used for promoting between inner circle and the outer lane, seal assembly is including setting up the first closing plate on the outer lane inner wall, the ring channel has been seted up to the inside wall of first closing plate, be provided with elastic component in the ring channel, elastic component is including setting up the sleeve on the ring channel inner wall.

Preferably, a strip-shaped groove is formed in the sleeve, a spring is arranged in the strip-shaped groove, and one end, far away from the strip-shaped groove, of the spring is connected with a moving block.

Preferably, the seal assembly further comprises a second seal plate arranged on the outer side wall of the inner ring, a rotating ring is arranged in the annular groove, and a rotating groove for rotating the rotating ring is formed in the second seal plate.

Preferably, one end, far away from the spring, of the moving block is arranged on the upper surface of the rotating ring, the transverse end face of the rotating ring is of a trapezoid structure, and the transverse end face of the rotating groove is of a trapezoid structure.

Preferably, an elastic sealing piece is arranged on the outer circumferential wall of the rotating ring, and the upper side and the lower side of the elastic sealing piece are respectively connected with the lower surface of the annular groove and the outer circumferential wall of the rotating ring.

Preferably, a fixing bolt for locking is arranged between the upper shell and the lower shell, and a rotating shaft is arranged in the motor main body.

Preferably, a mounting bracket for mounting the motor main body is arranged on the lower surface of the lower shell, and the rotating shaft penetrates through the mounting bracket.

The utility model has the technical effects and advantages that: this inside and outside rotor combines ball bearing formula supporting mechanism for brushless motor, along with the operation of motor main part, make ball bearing rotate, make the swivelling chute on swivel becket and the first closing plate rotate for a long time and appear wearing and tearing, owing to be provided with elastic component at the lateral wall on the swivel becket, the movable block moves in the bar inslot through the spring, can apply external force and make the swivel becket take place the feed volume for the swivel becket, thereby guarantee that the sealed laminating rotates between swivel becket and the swivelling chute and the outside diameter of swivel becket is greater than the outside diameter of swivelling chute, thereby can apply external force and guarantee to seal the laminating rotation between swivel becket and the swivelling chute for the time, and then improved the leakproofness between inner circle and the outer lane, ball bearing's life has been prolonged.

Drawings

FIG. 1 is a schematic overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

fig. 4 is a schematic structural view of a slider according to the present utility model.

In the figure: 1. an upper housing; 2. a mounting bracket; 3. a lower housing; 4. a rotating shaft; 5. a fixing bolt; 6. a first sealing plate; 7. an elastic sealing sheet; 8. a rotary groove; 9. a second sealing plate; 10. a rotating ring; 11. a sleeve; 12. a spring; 13. a bar-shaped groove; 14. a moving block; 15. ball bearings.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

In order to facilitate the promotion of the life of ball bearing 15, refer to fig. 1, 2 and 3 and show, including last casing 1, lower casing 3 and install the motor main part between last casing 1 and lower casing 3, be provided with ball bearing 15 in the motor main part, ball bearing 15 is including installing inner circle, outer lane and the ball in the motor main part, be located between inner circle, the outer lane to set up in the ball outside and be provided with the leakproofness seal assembly that is used for promoting between inner circle and the outer lane, be provided with elastic component at the lateral wall on the swivel becket 10, the movable block 14 moves in bar groove 13 through spring 12, can apply external force to swivel becket 10 and make swivel becket 10 take place the feed volume to guarantee to seal laminating rotation between swivel becket 10 and the swivel becket 8 and the outside diameter of swivel becket 10 is greater than the outside diameter of swivel becket, thereby can apply external force and guarantee to seal laminating rotation between swivel becket 10 and the swivel becket, and then improved the leakproofness between inner circle and the outer lane, improved rolling bearing's rotation leakproofness, thereby guaranteed antifriction bearing's life.

In order to increase the tightness of the ball bearing 15 in the use process, referring to fig. 1, 2, 3 and 4, the sealing assembly comprises a first sealing plate 6 arranged on the inner wall of an outer ring, an annular groove is formed in the inner side wall of the first sealing plate 6, an elastic assembly is arranged in the annular groove and comprises a sleeve 11 arranged on the inner wall of the annular groove, a strip-shaped groove 13 is formed in the sleeve 11, a spring 12 is arranged in the strip-shaped groove 13, one end, away from the strip-shaped groove 13, of the spring 12 is connected with a moving block 14, the sealing assembly further comprises a second sealing plate 9 arranged on the outer side wall of the inner ring, a rotating groove 8 used for rotating the rotating ring 10 is formed in the second sealing plate 9, the outer side of the rotating ring 10 is arranged in an extending mode to the outer side of the rotating groove, and the outer side diameter of the rotating ring 10 is larger than the outer side diameter of the rotating groove. The movable block 14 is arranged on the upper surface of the rotary ring 10 at one end far away from the spring 12, the transverse end face of the rotary ring 10 is of a trapezoid structure, the transverse end face of the rotary groove 8 is of a trapezoid structure, an elastic sealing piece 7 is arranged on the outer circumferential wall of the rotary ring 10, and the elastic sealing piece 7 is made of rubber materials. The upper and lower both sides of elastic sealing piece 7 are connected with the lower surface of ring channel and the outside circumference wall of swivel becket 10 respectively, be provided with the fixing bolt 5 that is used for the locking between upper casing 1 and the lower casing 3, and be provided with pivot 4 in the motor main part, the lower surface of lower casing 3 is provided with the installing support 2 that is used for installing the motor main part, pivot 4 runs through installing support 2.

When the rotary ring is used, firstly, the motor main body is placed in the lower shell 3, the upper shell 1 and the lower shell 3 are fixedly installed through the fixing bolts 5, along with the operation of the motor main body, the ball bearings 15 rotate, when the rotary ring 10 and the rotary groove 8 on the first sealing plate 6 are worn in long-time rotation, the moving block 14 moves in the strip-shaped groove 13 through the spring 12 due to the fact that the outer side wall on the rotary ring 10 is provided with the elastic component, external force can be applied to the rotary ring 10 to enable the rotary ring 10 to feed, and therefore sealing joint rotation between the rotary ring 10 and the rotary groove 8 is guaranteed, the outer side diameter of the rotary ring 10 is larger than that of the rotary groove, and accordingly external force can be applied to the rotary ring 10, and sealing joint rotation between the rotary ring 10 and the rotary groove is guaranteed.

Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model.

Claims

1. The utility model provides an inside and outside rotor combines ball bearing formula supporting mechanism for brushless motor, its characterized in that, including last casing (1), lower casing (3) and install the motor main part between last casing (1) and lower casing (3), be provided with ball bearing (15) in the motor main part, ball bearing (15) are including installing inner circle, outer lane and the ball in the motor main part, are located between inner circle, the outer lane to set up in the ball outside and be provided with and be used for promoting the leakproofness seal assembly between inner circle and the outer lane, seal assembly is including setting up first closing plate (6) on the outer lane inner wall, the ring channel has been seted up to the inside wall of first closing plate (6), be provided with elastomeric element in the ring channel, elastomeric element is including setting up sleeve (11) on the ring channel inner wall.

2. The ball bearing type supporting mechanism for a brushless motor with combined inner and outer rotors according to claim 1, wherein: a strip-shaped groove (13) is formed in the sleeve (11), a spring (12) is arranged in the strip-shaped groove (13), and one end, away from the strip-shaped groove (13), of the spring (12) is connected with a moving block (14).

3. A ball bearing type supporting mechanism for an inner and outer rotor combined brushless motor as claimed in claim 2, wherein: the sealing assembly further comprises a second sealing plate (9) arranged on the outer side wall of the inner ring, a rotating ring (10) is arranged in the annular groove, and a rotating groove (8) for rotating the rotating ring (10) is formed in the second sealing plate (9).

4. A ball bearing type supporting mechanism for a brushless motor with combined inner and outer rotors according to claim 3, wherein: one end, far away from the spring (12), of the moving block (14) is arranged on the upper surface of the rotating ring (10), the transverse end face of the rotating ring (10) is of a trapezoid structure, and the transverse end face of the rotating groove (8) is of a trapezoid structure.

5. The ball bearing type supporting mechanism for a brushless motor with combined inner and outer rotors according to claim 4, wherein: the outer side circumferential wall of the rotating ring (10) is provided with an elastic sealing sheet (7), and the upper side and the lower side of the elastic sealing sheet (7) are respectively connected with the lower surface of the annular groove and the outer side circumferential wall of the rotating ring (10).

6. The ball bearing type supporting mechanism for a brushless motor with combined inner and outer rotors according to claim 1, wherein: a fixing bolt (5) for locking is arranged between the upper shell (1) and the lower shell (3), and a rotating shaft (4) is arranged in the motor main body.

7. The ball bearing type supporting mechanism for a brushless motor with combined inner and outer rotors according to claim 6, wherein: the motor is characterized in that a mounting bracket (2) for mounting the motor body is arranged on the lower surface of the lower shell (3), and the rotating shaft (4) penetrates through the mounting bracket (2).