Outer rotor motor for driving rolling brush and sweeper

Abstract

The utility model relates to the technical field of cleaning equipment, in particular to an outer rotor motor for driving a rolling brush and a sweeper, and the outer rotor motor for driving the rolling brush comprises stators which are sleeved in the rolling brush at intervals; the rotors are sleeved in the stator at intervals; the front end cover is fixedly connected with the front end of the stator, a plurality of bosses are arranged on the circumference of the front end cover at intervals, and grooves matched and clamped with the bosses are formed in the rolling brush; when the rotor shaft of the rotor is fixed, the stator drives the rolling brush to rotate through the front end cover; the outer rotor motor for driving the rolling brush is directly placed in the rolling brush and directly drives the rolling brush to rotate, the power transmission process is simple and efficient, power is directly transmitted to the rolling brush, and a large number of transmission structures are omitted in the middle; the structure stability is high, the transmission efficiency is high, the service life is long, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, and particularly relates to an outer rotor motor for driving a rolling brush and a floor sweeper. Background Art

[0002] At present, for the rolling brush in the floor sweeper on the market, its driving device generally adopts the mode of an inner rotor motor combined with a pulley; the inner rotor motor is fixed on the outside of the rolling brush, and the inner rotor motor is connected with the rolling brush through a belt. The inner rotor motor drives the rolling brush to rotate through the belt for cleaning. The transmission efficiency of the above mode is low. After long-term use, the surface of the belt is easy to wear and age, and the slipping phenomenon occurs, seriously affecting the normal use of the floor sweeper. Content of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects that the mode of adopting an inner rotor motor combined with a pulley to drive the rolling brush not only has low transmission efficiency, but also the surface of the belt is easy to wear and age after long-term use, and the slipping phenomenon occurs, seriously affecting the normal use of the floor sweeper.

[0004] To solve the above problems, the utility model provides an outer rotor motor for driving a rolling brush, including:

[0005] A stator, which is sleeved inside the rolling brush at intervals;

[0006] A rotor, which is sleeved inside the stator at intervals;

[0007] A front end cover, which is fixedly connected to the front end of the stator, and a plurality of convex platforms are arranged at intervals on the circumference of the side of the front end cover facing the rolling brush. A plurality of grooves adapted to the plurality of convex platforms are arranged on the rolling brush;

[0008] When the rotor shaft of the rotor is fixed, the outer rotor motor for driving the rolling brush is adapted to drive the rolling brush to rotate through the front end cover by the stator.

[0009] Optionally, the two convex platforms are arranged at an interval of 180 degrees.

[0010] Optionally, a housing is wrapped around the outer periphery of the stator, and a plurality of axial ventilation grooves are uniformly arranged on the outer periphery of the housing.

[0011] Optionally, it further includes:

[0012] A rear end cover, which is connected to the rear end of the housing. The rear end cover is composed of a plurality of wind blade-shaped protrusions diverging from the center to the outer edge.

[0013] Optionally, the number of the wind blade-shaped protrusions is nine.

[0014] Optionally, the housing and the rear end cover are integrally cast castings.

[0015] Optionally, the front end cover is a casting.

[0016] Optionally, a groove is provided at the end face of the roller part of the rotary brush.

[0017] The present utility model further provides a floor sweeper, comprising:

[0018] The external rotor motor for driving the rotary brush;

[0019] The rotary brush.

[0020] Optionally, it further comprises:

[0021] A bench, a threaded portion is provided at the extended end of the rotor shaft, and the rotor shaft is fixed to the bench by a hexagonal nut.

[0022] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0023] 1. The external rotor motor for driving the rotary brush provided by the present utility model comprises: a stator, which is spacedly sleeved inside the rotary brush; a rotor, which is spacedly sleeved inside the stator; a front end cover, which is fixedly connected to the front end of the stator, and a plurality of bosses are spacedly provided on the circumference of the front end cover facing the rotary brush side, and a plurality of grooves adapted to the plurality of bosses are provided on the rotary brush; the external rotor motor for driving the rotary brush is adapted to drive the rotary brush to rotate by the front end cover when the rotor shaft of the rotor is fixed; adopting the above technical solution in this application, the external rotor motor for driving the rotary brush is directly placed inside the rotary brush and directly drives the rotary brush to rotate. The power transmission process is simple and efficient, directly transmitting the power to the rotary brush, and a large number of transmission structures are omitted in the middle; during actual operation, the rotor shaft remains stationary while the stator and the front end cover perform rotational motion; the solution of this application replaces the conventional method of combining an internal rotor motor with a pulley and the method of an internal planetary reduction motor, can achieve the most efficient power output, avoid operation failures caused by defects of the reducer or wear and aging of the belt, etc., has strong structural stability, high transmission efficiency, long service life, and high reliability. At the same time, the overall failure rate is low and the disassembly and assembly are very convenient, greatly reducing the later maintenance cost and improving the market competitiveness of the product.

[0024] 2. The external rotor motor for driving the rotary brush provided by the present utility model further comprises: a rear end cover, which is connected to the rear end of the casing, and the rear end cover is composed of a plurality of wind blade-shaped protrusions diverging from the center to the outer edge; adopting the above technical solution in this application, heat can be dissipated in real time during operation through the wind blade-shaped protrusions to achieve self-cooling, and there is no need to externally dispose a cooling mechanism, and the cost is relatively low; at the same time, the overload capacity is improved, and when applied to a floor sweeper, it can also complete the floor sweeping and cleaning task for complex road conditions. Description of the Drawings

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic three-dimensional structure of the outer-rotor motor for driving the roller brush provided in the embodiment of the present invention Figure 1 ;

[0027] Figure 2 Schematic three-dimensional structure of the outer-rotor motor for driving the roller brush provided in the embodiment of the present invention Figure 2 。

[0028] Explanation of reference numerals:

[0029] 1. Roller brush; 2. Front end cover; 3. Boss; 4. Groove; 5. Rotor shaft; 6. Housing; 7. Ventilation slot; 8. Rear end cover; 9. Blade-shaped protrusion; 10. Hexagonal nut; 11. Drum part. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] The existing method of driving the brush roller can also adopt a planetary reduction motor device. Specifically, the planetary reduction motor and the reducer are jointly placed inside the roller. The power is transmitted from the planetary reduction motor to the roller through the reducer, thereby driving the brush roller to rotate. The cost of the second method is high, and the transmission efficiency is relatively low. After long-term use, problems such as oil leakage and gear wear are likely to occur in the reducer. For the above reasons, an external rotor motor for driving the brush roller is proposed in this application.

[0035] As Figures 1 to 2 shown, a specific embodiment of the external rotor motor for driving the brush roller includes: a stator, a rotor, a front end cover 2, and a rear end cover 8.

[0036] As Figure 2 shown, the stator is spacedly sleeved inside the brush roller 1. The rotor is spacedly sleeved inside the stator. The front end cover 2 is fixedly connected to the front end of the stator, and a plurality of bosses 3 are spacedly provided on the circumference of the front end cover 2 facing the brush roller 1. A plurality of grooves 4 adapted to be snap-connected with the plurality of bosses 3 are provided on the brush roller 1. The external rotor motor for driving the brush roller is adapted to drive the brush roller 1 to rotate through the front end cover 2 when the rotor shaft 5 of the rotor is fixed.

[0037] Specifically, the two bosses 3 are arranged at an interval of 180 degrees, that is, two bosses 3 are evenly distributed, and the bosses 3 and the front end cover 2 are integrally cast.

[0038] During assembly, the grooves 4 on the brush roller 1 correspond to the bosses 3 at the front end cover 2. Slowly place the external rotor motor for driving the brush roller into the brush roller 1 until the grooves 4 on the brush roller 1 and the bosses 3 at the front end cover 2 are snap-connected. After the assembly is completed, when the external rotor motor for driving the brush roller rotates, the brush roller 1 is driven to rotate by the bosses 3 at the front end cover 2.

[0039] Furthermore, as Figure 1As shown, a housing 6 is wrapped around the outer periphery of the stator, and a plurality of axial ventilation grooves 7 are evenly arranged on the outer periphery of the housing 6. The rear end cover 8 is connected to the rear end of the housing 6, and the rear end cover 8 is composed of a plurality of blade-shaped protrusions 9 that diverge from the center to the outer edge. Specifically, there are nine blade-shaped protrusions 9, and the nine blade-shaped protrusions 9 are arranged at equal angular intervals. Specifically, the housing 6 and the rear end cover 8 are integrally cast castings. The front end cover 2 is a casting. As Figure 2 shown, a groove 4 is provided on the end face of the drum portion 11 of the rotary brush 1. When the outer rotor motor driving the rotary brush rotates, the cooling air flow brought by the rotation of the blade-shaped protrusion 9 can flow through the ventilation groove 7 to cool the outer rotor motor driving the rotary brush.

[0040] The present utility model further provides a floor sweeper, comprising: the outer rotor motor for driving the rotary brush, the rotary brush 1 and the table frame. The outer extension end of the rotor shaft 5 is provided with a thread, and the rotor shaft 5 is fixed to the table frame by a hexagonal nut 10. Specifically, the threaded end of the rotor shaft 5 can penetrate through the through hole on the table frame, and then the hexagonal nut 10 is screwed tightly on the threaded end of the rotor shaft 5.

[0041] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. An outer rotor motor for driving a roller brush, characterized in that: include: The stator is sleeved inside the roller brush (1) at intervals; A rotor, which is sleeved inside the stator at intervals; A front end cover (2) is fixedly connected to the front end of the stator, and a plurality of bosses (3) are provided at intervals on the circumference of the front end cover (2) on the side facing the roller brush (1), and a plurality of grooves (4) adapted to be engaged with the plurality of bosses (3) are provided on the roller brush (1); The outer rotor motor for driving the roller brush is suitable for driving the roller brush (1) to rotate through the front end cover (2) when the rotor shaft (5) of the rotor is fixed.

2. The outer rotor motor for driving the roller brush according to claim 1, characterized in that: The bosses (3) are two arranged at an interval of 180 degrees.

3. The outer rotor motor for driving a roller brush according to claim 1 or 2, characterized in that: A housing (6) is wrapped around the outer periphery of the stator, and a plurality of ventilation grooves (7) are evenly distributed along the axial direction on the outer periphery of the housing (6).

4. The outer rotor motor for driving the roller brush according to claim 3, characterized in that: Also includes: A rear end cover (8) is connected to the rear end of the housing (6), and the rear end cover (8) is composed of a plurality of fan blade-shaped protrusions (9) diverging from the center to the outer edge.

5. The outer rotor motor for driving the roller brush according to claim 4, characterized in that: There are nine blade-shaped protrusions (9).

6. The outer rotor motor for driving a roller brush according to claim 4, characterized in that: The housing (6) and the rear end cover (8) are integrally cast.

7. The outer rotor motor for driving a roller brush according to claim 1 or 2, characterized in that: The front end cover (2) is a casting.

8. The outer rotor motor for driving a roller brush according to claim 1 or 2, characterized in that: A groove (4) is provided on the end surface of the roller portion (11) of the roller brush (1).

9. A sweeping machine, characterized in that: include: The outer rotor motor for driving the roller brush according to any one of claims 1 to 8; The roller brush (1) according to any one of claims 1 to 8.

10. The sweeping machine according to claim 9, characterized in that: Also includes: The outer end of the rotor shaft (5) is provided with a thread, and the rotor shaft (5) is fixed on the platform by a hexagonal nut (10).

Images