CN219322252U

CN219322252U - Special brushless motor of umbrella

Info

Publication number: CN219322252U
Application number: CN202223584558.8U
Authority: CN
Inventors: 唐兴志
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-07
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a special brushless motor for an umbrella, which comprises a hollow shaft, wherein a stator assembly is sleeved on the hollow shaft, a rotor assembly is sleeved on the outer side of the stator assembly, and the front end of the rotor assembly is connected with a foldable umbrella rib. The stator assembly comprises a first bearing, a first wire frame, a stator core, a second wire frame, a drive PCB, a shaft sleeve, a coil, a spring and a second bearing; the rotor assembly comprises a rotor and magnetic strips, wherein the magnetic strips are uniformly distributed on the inner side of the rotor, and polarities of adjacent magnetic strips are opposite. The rotor assembly is designed on the outer side of the stator assembly, the permanent magnet with larger magnetism can be better arranged, the driving torque of the rotor assembly during working is improved, the miniature fan rib is driven more stably and forcefully, the rib is better driven to be opened, and the rotor assembly is convenient for a user to use.

Description

Special brushless motor of umbrella

Technical Field

The utility model belongs to the technical field of brushless motors, and particularly relates to a special brushless motor for an umbrella.

Background

At present, almost all brushless motor designs are to wrap the rotor assembly in the stator assembly, and such designs result in a larger torque of the rotor assembly when the rotor assembly is powered on and driven, which is more laborious for the application of the miniature motor. In addition, in the design of electric umbrella, need utilize the torsion of motor to strut the rib, for this, in order to obtain better moment of torsion strength, better adaptation motor opens and the effort of receipts in the umbrella. This time, a larger design change is to be performed to improve the torque of the brushless motor under the micro fan and the practical capability of the brushless motor.

Disclosure of Invention

The utility model aims to provide a special brushless motor for an umbrella, which aims to solve the problems in the prior art. In order to achieve the purpose, the utility model adopts the following technical scheme:

the special brushless motor for the umbrella comprises a hollow shaft, wherein a stator assembly is sleeved on the hollow shaft, a rotor assembly is sleeved on the outer side of the stator assembly, and the front end of the rotor assembly is connected with a foldable umbrella rib.

Preferably, the stator assembly comprises a first bearing, a first wire frame, a stator core, a second wire frame, a drive PCB, a shaft sleeve, coils, a spring and a second bearing, wherein a plurality of groups of coils are arranged on the stator core, the first wire frame and the second wire frame are respectively fixed on the front side and the rear side of the stator core, and the shaft sleeve is sleeved outside the hollow shaft after penetrating through the second wire frame, the stator core and the first wire frame; the rear end of the bearing is sleeved with a spring, the spring is abutted with a second bearing, the outer side of the second bearing is connected with the rotor assembly, the front end of the shaft sleeve is also provided with a first bearing, and the outer side of the first bearing is connected with the rotor assembly; the drive PCB is fixedly arranged on the outer side of the second wire frame.

Preferably, an end cover is further arranged on the outer side of the second bearing, and the end cover is fixedly connected to the rotor assembly.

Preferably, a power supply lead is arranged in the hollow shaft, and the power supply lead is electrically connected with the coil.

Preferably, the rotor assembly comprises a rotor and magnetic strips, wherein the magnetic strips are uniformly distributed on the inner side of the rotor, and polarities of adjacent magnetic strips are opposite.

The utility model has the beneficial effects that: the rotor assembly is designed on the outer side of the stator assembly, the permanent magnet with larger magnetism can be better arranged, the driving torque of the rotor assembly in operation is improved, compared with a brushless motor with traditional design, the motor is greatly improved on torque, the miniature fan rib is driven to be more stable and powerful, the better driving rib is opened, and convenience is brought to users.

Drawings

FIG. 1 is a schematic view of an embodiment of the present utility model;

fig. 2 is a schematic diagram of a cut-away structure according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1. a power supply lead; 2. a hollow shaft; 3. a first bearing; 4. a first wire frame; 5. a stator core; 6. a rotor; 7. a magnetic stripe; 8. a second wire frame; 9. a drive PCB; 10. an end cap; 11. a shaft sleeve; 12. a coil; 13. a spring; 14. a second bearing; 15. a fan blade.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiments, and the terms "upper," "lower," "left," "right," "front," "back," and the like are used herein with reference to the positional relationship of the drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

As shown in fig. 1-2, the embodiment of the utility model provides a special brushless motor for an umbrella, which comprises a hollow shaft 2, wherein a stator assembly is sleeved on the hollow shaft 2, a rotor assembly is sleeved on the outer side of the stator assembly, and the front end of the rotor assembly is connected with a foldable umbrella rib 15.

In this specific embodiment, the stator assembly includes a first bearing 3, a first bobbin 4, a stator core 5, a second bobbin 8, a drive PCB9, a shaft sleeve 11, a coil 12, a spring 13 and a second bearing 14, wherein the stator core 5 is provided with a plurality of groups of coils 12 wound around turns, the front and rear sides of the stator core 5 are respectively fixed with the first bobbin 4 and the second bobbin 8, and the shaft sleeve 11 is sleeved outside the hollow shaft 2 after penetrating through the second bobbin 8, the stator core 5 and the first bobbin 4; the rear end of the bearing is sleeved with a spring 13, the spring 13 is abutted against a second bearing 14, and the spring 13 can transmit a buffer force to the second bearing 14 when the brushless motor works in an abutting mode, so that vibration generated when the brushless motor rotates is reduced. Correspondingly, the outer side of the second bearing 14 is connected with the rotor assembly, the front end of the shaft sleeve 11 is also provided with a first bearing 3, and the outer side of the first bearing 3 is connected with the rotor assembly; through the centre gripping of two bearings, the rotatory frictional force of rotor subassembly that reduces that can be fine, better promotion rotational speed. The driving PCB9 is fixedly installed at the outer side of the second bobbin 8, and is integrated with the second bobbin to reduce design redundancy and improve the integration level.

In this embodiment, an end cap 10 is further provided on the outer side of the second bearing 14, and the end cap 10 is fixedly connected to the mover assembly.

In this embodiment, a power lead 1 is disposed in the hollow shaft 2, and the power lead 1 is electrically connected with the coil 12, so as to drive the stator core 5 to generate magnetism, thereby completing driving of the mover assembly, and then driving the rib at the tail end of the mover assembly to transition from a folded state to an open state.

In this embodiment, the rotor assembly includes a rotor 6 and magnetic strips, the magnetic strips are uniformly distributed on the inner side of the rotor 6, and the polarities of adjacent magnetic strips are opposite.

The utility model has the beneficial effects that: the rotor assembly is designed on the outer side of the stator assembly, the permanent magnet with larger magnetism can be better arranged, the driving torque of the rotor assembly in operation is improved, compared with a brushless motor with traditional design, the motor is greatly improved on torque, the miniature fan umbrella rib 15 is driven more stably and forcefully, the better driving umbrella rib is opened, and convenience is brought to users.

The above embodiments are only for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one of ordinary skill in the relevant art without departing from the spirit and scope of the present utility model, and therefore, all equivalent technical solutions are also within the scope of the present utility model, and the scope of the present utility model is defined by the claims.

Claims

1. A special brushless motor of umbrella, its characterized in that: the umbrella comprises a hollow shaft, wherein a stator assembly is sleeved on the hollow shaft, a rotor assembly is sleeved on the outer side of the stator assembly, and the front end of the rotor assembly is connected with a foldable umbrella rib.

2. The umbrella-specific brushless motor of claim 1, wherein: the stator assembly comprises a first bearing, a first wire frame, a stator core, a second wire frame, a drive PCB, a shaft sleeve, coils, a spring and a second bearing, wherein the stator core is provided with a plurality of groups of coils with winding turns, the front side and the rear side of the stator core are respectively fixed with the first wire frame and the second wire frame, and the shaft sleeve penetrates through the second wire frame, the stator core and the first wire frame and then is sleeved on the outer side of the hollow shaft; the rear end of the bearing is sleeved with a spring, the spring is abutted with a second bearing, the outer side of the second bearing is connected with the rotor assembly, the front end of the shaft sleeve is also provided with a first bearing, and the outer side of the first bearing is connected with the rotor assembly; the drive PCB is fixedly arranged on the outer side of the second wire frame.

3. The umbrella-dedicated brushless motor according to claim 2, wherein: and an end cover is further arranged on the outer side of the second bearing, and the end cover is fixedly connected to the rotor assembly.

4. The umbrella-dedicated brushless motor according to claim 2, wherein: and a power lead is arranged in the hollow shaft and is electrically connected with the coil.

5. The umbrella-specific brushless motor of claim 1, wherein: the rotor assembly comprises a rotor and magnetic strips, wherein the magnetic strips are uniformly distributed on the inner side of the rotor, and polarities of adjacent magnetic strips are opposite.