CN214480015U

CN214480015U - Brushless motor bearing protection architecture and many rotor unmanned aerial vehicle

Info

Publication number: CN214480015U
Application number: CN202121025815.7U
Authority: CN
Inventors: 何宝华
Original assignee: Jiangxi Kufei Model Development Co ltd
Current assignee: Jiangxi Kufei Intelligent Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-10-22
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses a brushless motor bearing protection architecture can prevent that sand and dust, rainwater from getting into the bearing, guarantees the work of bearing, improves the life of bearing. A brushless motor bearing protection structure comprises a stator and a rotor, wherein the stator and the rotor form an outer rotor brushless motor structure, the stator comprises a base and an armature, a mounting hole is formed in the armature, the armature is connected with the base, and the top end of the base is higher than the opening edge of the mounting hole; the rotor comprises a main shaft, the main shaft is connected with the base through a bearing, the upper end of the main shaft is exposed outside the base, the upper end of the main shaft is connected with the front cover, the main shaft rotates along with the front cover, an iron ring is connected with the front cover, and a magnet is arranged on the inner wall of the iron ring; the lower surface of protecgulum is provided with annular interior retaining ring, and interior retaining ring is located the outside of base, has the clearance between interior retaining ring and the base, and the side of base is stretched to the lower extreme of interior retaining ring, and interior retaining ring and protecgulum cover the top of base together. The utility model also discloses an unmanned aerial vehicle.

Description

Brushless motor bearing protection architecture and many rotor unmanned aerial vehicle

Technical Field

The utility model relates to a power device on the many rotor crafts especially relates to a brushless motor middle bearing dustproof and waterproof structure.

Background

At present, the main components of the brushless motor are a rotor, an armature and a base, and a bearing is arranged on the base to play an important role in supporting the rotor to rotate. In actual application, the brushless motor with the open structure is used in an environment with much sand and dust and rainwater, the bearing is damaged with higher speed when the inner bearing is exposed to the outside and is easy to be invaded by the sand and dust and the rainwater, the service life of the bearing is greatly shortened, and the service life of the brushless motor is further shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a brushless motor bearing protection architecture, it can prevent that sand and dust, rainwater from getting into the bearing, guarantees the work of bearing to improve the life of bearing.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a brushless motor bearing protection structure comprises a stator and a rotor, wherein the stator and the rotor form an outer rotor brushless motor structure, the stator comprises a base and an armature, a mounting hole is formed in the armature, the armature is connected with the base, and the top end of the base is higher than the opening edge of the mounting hole; the rotor comprises a main shaft, the main shaft is connected with the base through a bearing, the upper end of the main shaft is exposed outside the base, the upper end of the main shaft is connected with the front cover, the main shaft rotates along with the front cover, an iron ring is connected with the front cover, and a magnet is arranged on the inner wall of the iron ring; the lower surface of protecgulum is provided with annular interior retaining ring, and interior retaining ring is located the outside of base, has the clearance between interior retaining ring and the base, and the side of base is stretched to the lower extreme of interior retaining ring, and interior retaining ring and protecgulum cover the top of base together.

On the basis of the above scheme and as a preferable scheme of the scheme: the armature comprises a stator core and a coil, the coil is wound on the core, and the mounting hole is formed in the stator core.

On the basis of the above scheme and as a preferable scheme of the scheme: the bearing comprises an upper bearing and a lower bearing, a bearing upper cavity for mounting the upper bearing and a bearing lower cavity for mounting the lower bearing are arranged on the base, a convex shoulder is arranged at the upper part of the main shaft, a shaft locking screw is screwed at the lower part of the main shaft, and the main shaft is connected with the base through the convex shoulder, the shaft locking screw, the upper bearing and the lower bearing.

On the basis of the above scheme and as a preferable scheme of the scheme: and a hollow hole is formed in the outer side of the inner retainer ring of the front cover.

The utility model discloses still provide an use many rotor unmanned aerial vehicle that has foretell brushless motor bearing protection architecture, including the frame, the base is connected with the frame.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses a brushless motor bearing protection architecture has adopted and has not increased the volume as far as possible, does not increase under external device's the prerequisite, and the lower surface that adopts the protecgulum is provided with annular interior retaining ring, and the bead of mounting hole is surpassed on the top of base, and interior retaining ring and protecgulum are the top isotructure of shade base together, can reach the dustproof and waterproof function of bearing, improve the life of bearing and motor, reduce the maintenance cost of equipment.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional structural view of the present invention;

fig. 3 is an exploded view of the present invention;

fig. 4 is a schematic perspective view of the front cover 101 of the present invention;

fig. 5 is a schematic perspective view of the base 201 of the present invention;

fig. 6 is a perspective view of the stator 2 according to the present invention.

In the figure, 1-rotor, 101-front cover, 10101-inner retainer ring, 10102-hollowed hole, 102-main shaft, 1021-shoulder, 103-iron ring, 104-magnet, 2-stator, 20201-stator iron core, 20202-coil, 201-base, 2011-top end of base, 2012-upper bearing cavity, 2013-lower bearing cavity, 202-armature, 3-shaft locking screw, 4-upper bearing and 5-lower bearing.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Referring to fig. 1 to 6, the present embodiment discloses a brushless motor bearing protection structure, which includes a rotor 1 and a stator 2, where the stator 2 and the rotor 1 form an outer rotor brushless motor structure.

As shown in fig. 2, 3 and 6, the stator 2 is composed of a base 201 and an armature 202, a mounting hole 2020 is provided in the center of the armature 202, the armature 202 is sleeved outside the base 201 by the mounting hole 2020 and forms a fixed connection with the base 201, and the top 2011 of the base 201 is higher than the opening 2021 of the mounting hole 2020. In this embodiment, the armature 202 includes a stator core 20201 on which a coil is wound, and a coil 20202, and the mounting hole 2020 is provided on the stator core 20201.

The rotor 1 is composed of a front cover 101, a main shaft 102, an iron ring 103, and a magnet 104. Specifically, the rotor includes a main shaft 102, the main shaft 102 is connected to a base 201 through a bearing, an upper end of the main shaft 102 is exposed outside the base 201, an upper end of the main shaft 102 is connected to a front cover 101, as shown in the figure, a shaft hole is formed in the front cover 101, so that the main shaft 102 is assembled with the front cover 101, the main shaft 102 rotates along with the front cover 101, an iron ring 103, which may also be called a magnetic yoke, connected to the front cover 101, and a magnet 104 is disposed on an inner wall of the iron ring 103.

The lower surface of protecgulum 101 is provided with annular interior retaining ring 10101, and interior retaining ring 10101 is located the outside of base 201, has the clearance between interior retaining ring 10101 and the base 201, and the side 201a of base 201 is stretched to the lower extreme of interior retaining ring 10101, and interior retaining ring 10101 and protecgulum 101 cover the top 2011 of base 201 together. As shown in the figure, the inner diameter of the retainer ring 10101 is larger than the outer diameter of the top end 2011 of the base 201 (i.e. the hole wall of the bearing upper cavity 2012), so that the inner retainer ring 10101 and the front cover 101 construct a chamber for the top end 2011 of the base 201 to be inserted into, and a gap is formed between the inner retainer ring 10101 and the front cover 101, when current is input into the armature 202, the rotor 1 is driven to operate, foreign matters and rainwater outside the motor can be prevented from invading the upper bearing 4 while the rotor 1 is not prevented from operating, the effect of protecting the bearing is achieved, and the service lives of the bearing and the motor are prolonged.

In one embodiment, the bearing comprises an upper bearing 4 and a lower bearing 5, the base 201 is provided with an upper bearing cavity 2012 for the upper bearing 4 to be mounted and a lower bearing cavity 2013 for the lower bearing 5 to be mounted, the upper part of the main shaft 102 is provided with a shoulder 1021, the lower part of the main shaft is screwed with a locking shaft screw 3, and the main shaft 102 is connected with the base 201 through the shoulder 1021, the locking shaft screw 3, the upper bearing 4 and the lower bearing 5. Thereby, the spindle 102 is axially fixed and circumferentially rotatable with respect to the base 201.

The front cover is provided with a hollow hole 10102 at the outer side of the inner retainer ring. The brushless motor with the hollow hole structure is a brushless motor with an open structure.

The utility model also discloses an unmanned aerial vehicle, it includes the frame and has above-mentioned brushless motor bearing protection architecture's brushless motor. When in use, the base 201 is fixed on the frame.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A brushless motor bearing protection structure comprises a stator and a rotor, wherein the stator and the rotor form an outer rotor brushless motor structure, the stator comprises a base and an armature, a mounting hole is formed in the center of the armature, the armature is connected with the base, and the top end of the base is higher than the opening edge of the mounting hole; the rotor comprises a main shaft, the main shaft is connected with the base through a bearing, the upper end of the main shaft is exposed outside the base, the upper end of the main shaft is connected with the front cover, the main shaft rotates along with the front cover, an iron ring is connected with the front cover, and a magnet is arranged on the inner wall of the iron ring; the method is characterized in that: the lower surface of protecgulum is provided with annular interior retaining ring, and interior retaining ring is located the outside of base, has the clearance between interior retaining ring and the base, and the side of base is stretched to the lower extreme of interior retaining ring, and interior retaining ring and protecgulum cover the top of base together.

2. The brushless motor bearing protection structure of claim 1, wherein: the armature comprises a stator core and a coil, the coil is wound on the core, and the mounting hole is formed in the stator core.

3. The brushless motor bearing protection structure of claim 1, wherein: the bearing comprises an upper bearing and a lower bearing, a bearing upper cavity for mounting the upper shaft and a bearing lower cavity for mounting the lower bearing are arranged on the base, a convex shoulder is arranged at the upper part of the main shaft, a shaft locking screw is screwed at the lower part of the main shaft, and the main shaft is connected with the base through the convex shoulder, the shaft locking screw, the upper bearing and the lower bearing.

4. The brushless motor bearing protection structure of claim 1, wherein: and a hollow hole is formed in the outer side of the inner retainer ring of the front cover.

5. A multi-rotor unmanned aerial vehicle to which the brushless motor bearing protection structure of any one of claims 1-4 is applied, characterized in that: comprises a frame, and a base is connected with the frame.