WO2020077883A1

WO2020077883A1 - Special motor for brush plate of cleaning device

Info

Publication number: WO2020077883A1
Application number: PCT/CN2019/000196
Authority: WO
Inventors: 林鹏; 程勇玖; 李显锐; 翁海林
Original assignee: 杭州恒业电机制造有限公司
Priority date: 2018-10-17
Filing date: 2019-10-16
Publication date: 2020-04-23
Also published as: CN208890613U

Abstract

A special motor for a brush plate of a cleaning device, which relates to the technical field of external rotor motors: an internal stator wherein a winding is provided at a middle portion of a mandrel, which is characterized in that a mandrel at a front and rear side of the internal stator is provided thereon with a front end cover and rear end cover that rotatingly fit with the internal stator; an external rotor having a magnetic tile is provided between the front end cover and the rear end cover, an external portion of the front end cover forming a brush plate that is connected to a fitting surface; the center of the axis of the mandrel is axially provided with a water delivery through-hole, and a motor lead is lead out through the hole from within the mandrel, a lead out end and a water intake end of the water delivery through-hole being located on an end surface of a mounting side of the rear end cover of the mandrel; the solution of the present patent employs an external rotor motor structure, uses the front end cover to mount a brush plate to form a direct drive structure, and reduces the use of a decelerator, which avoids gear transmission, effectively reduces the shape of the motor and improves transmission efficiency, and reduces noise discharge; meanwhile, the motor lead is connected to the outside by means of an internal hole of the mandrel to improve the structural safety of an electrical line; using an axial water delivery through-hole increases the temperature of cleaning water, improves a cleaning effect, improves a motor cooling effect, and improves the efficiency of a motor.

Description

Special motor for cleaning equipment brush plate

Technical field

The utility model belongs to the technical field of external rotor motors, and particularly relates to a special external rotor motor for brush discs suitable for cleaning equipment such as scrubbers and sweepers.

Background technique

The cleaning equipment represented by scrubbers and sweepers, etc., uses a geared motor to drive the brush disc to drive the final cleaning tool to work. In the prior art, the geared motor is composed of a motor and a reducer. As shown in FIG. 4, the motor 44 and the brush disc are connected and driven by connecting a reducer 42, that is, a speed reducer is installed on the output shaft of the motor 44 42, the output shaft 41 of the reducer and the brush plate are installed on the end face, the output shaft 41 is provided with a water hole 43 in the center, the water pipe for cleaning water is led out through the water hole 43 on the reducer, and the D end in the figure is the water inlet The end and the C end are the water outlet. In addition to the high manufacturing cost, the existing transmission structure driven by the reducer also has the following main problems:

1) Due to the use of the reducer and the eccentricity P of the reducer, the space occupied by the transmission and drive structure is large, resulting in a relatively large overall shape of cleaning equipment such as washing machines and sweeping machines. Inconvenience;

2) The gear transmission is adopted, so the transmission efficiency is relatively low, and the noise is large, resulting in increased noise emission in the working environment of the workplace, which is not conducive to the occupational health of the site workers and also affects the environmental noise emission;

3) An additional heating device is required to achieve the heating of cleaning water.

Utility model content

The utility model aims to provide a special motor technical solution for brushing disks of cleaning equipment by using an external rotor motor and a motor shaft water-cooling cooling structure, so as to overcome the above-mentioned problems in the prior art.

The special motor for the brush plate of the cleaning equipment, the inner stator with windings fixedly connected to the central part of the mandrel is characterized in that the mandrels on the front and rear sides of the inner stator are respectively provided with a front end cover and a rear end cover matched with the rotation, An outer rotor with a magnetic tile is connected between the front end cover and the rear end cover, and the exterior of the front end cover forms a connection surface of the brush disc. The shaft center of the mandrel is provided with a water conveying through hole, and the motor lead is led out from the mandrel through the hole, and The leading end of the motor lead and the inlet end of the water delivery through hole are located on the end face of the rear end cover of the mandrel.

The special motor for the cleaning device brush plate is characterized in that the mandrel is provided with a threading hole in the radial direction, and the threading hole is connected with the water conveying through hole, and the motor lead is led out from the water inlet through the threading hole and the water conveying through hole.

The special motor for the cleaning device brush plate is characterized in that an L-shaped threading hole is provided on the mandrel for threading the motor lead.

The special motor for the cleaning device brush plate is characterized in that the mandrel uses a stepped structure with a small front and a large axis in the axial direction. The diameter of the mandrel used to install the rear end cover section is larger than that used to install the inner stator and the front end cover Section, a threading hole is axially provided on the mandrel for installing the rear end cover section for threading the motor lead.

The special motor for the cleaning device brush plate is characterized in that the front end cover and the rear end cover are respectively rotated and matched with the mandrel through the front bearing and the rear bearing.

The special motor for cleaning equipment brush discs is characterized in that an oil seal is provided at the matching position between the front end cover and the mandrel. The special motor for cleaning equipment brush discs is novel in design and reasonable in concept. The drive motor adopts an external rotor structure. Using the front end cover to install the brush plate to form a direct drive structure, reduce the use of reducers, avoid gear transmission, effectively reduce the shape of the motor and improve transmission efficiency, reduce noise emissions, extend the service life of the motor, reduce manufacturing and maintenance costs, also cleverly The motor lead is connected to the outside through the inner hole of the mandrel to improve the safety of the electrical circuit structure; at the same time, the axial water through hole setting of the motor mandrel is used to achieve cold water inlet and hot water outlet, which not only raises the cleaning water temperature and improves the cleaning effect, but also on the mandrel The central position of the shaft constitutes the water cooling system of the motor, which reduces the temperature of the central part of the motor, improves the cooling effect of the motor, and improves the efficiency of the motor.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of the structure of the utility model;

Figures 2 and 3 are schematic structural diagrams of different implementations of the utility model;

4 is a schematic diagram of the structure of the reduction motor used in the prior art of the utility model;

Figure 1-3: 1-Water delivery hole, 2-mandrel, 3-oil seal, 4-front cover, 5-inner stator, 6-outer rotor, 7-rear cover, 8-rear bearing, 9- Motor lead, 10-threading hole, 11-front bearing.

detailed description

The specific implementation of the utility model will be described in detail with reference to the drawings in the specification:

As shown in Figure 1-3, it is a special motor for cleaning the brush disk of the cleaning equipment. The shaft center of the mandrel 2 is provided with a water supply through hole 1. The A and B ends in the figure are the outlet and inlet ends of the cleaning water; the mandrel 2 The inner stator 5 with windings fixedly connected thereto is provided in the middle, and the mandrel 2 on the front and rear sides of the inner stator 5 is provided with a front end cover 4 and a rear end cover 7 which are rotationally matched with the front bearing 11 and the rear bearing 8 respectively, and the front end cover 4 An oil seal 3 is set at the matching position with the mandrel 2 to improve the protection level of the motor; an outer rotor 6 with a magnetic tile is connected between the front end cover 4 and the rear end cover 7, the front end cover 4, the outer rotor 6, and the rear end cover 7 Connected as a unit to form a rotating fit with the mandrel 2. The front end cover 4 forms the connection and mating surface of the brush plate for installing the brush plate. The brush plate is flanged to the end surface of the front cover 4; the motor lead 9 from the mandrel 2 The inner perforation leads out, and the leading end of the motor lead 9 and the water inlet of the water delivery through hole 1 are located on the end face of the rear end cover 7 of the mandrel 2 on the mounting side, that is, the B end shown in the figure, which can improve the safety of the electrical circuit structure.

In the above embodiment, the lead wire 9 of the motor is drawn through the mandrel 2 through a different structure: FIG. 1 shows that the mandrel 2 is provided with an L-shaped threading hole 10 for threading the motor lead 9; as shown in FIG. 2 The mandrel 2 adopts a stepped structure with a small front and a large axis in the axial direction and is drilled through a large diameter section. The mandrel 2 is used to install the rear end cover 7 and has a larger diameter than the inner stator 5 and the front end cover 4 sections. A threading hole 10 is axially provided on the mandrel 2 of the 7th section of the rear end cover for threading the motor lead 9. The lowest position of the threading hole 10 is higher than the matching surface of the mandrel 2 and the inner stator 5; Figure 3 shows the core The shaft 2 is provided with a threading hole 10 in the radial direction. The threading hole 10 communicates with the water delivery through hole 1. The motor lead 9 is led out from the water inlet through the threading hole 10 and the water delivery through hole 1. At this time, the motor lead 9 must be waterproofed. Ensure that the set protection level is reached.

In the above embodiment, the drive motor adopts the outer rotor structure, and the brush plate is directly installed on the end surface of the front end cover 4 to form a direct drive, which reduces the application of the reducer, thus avoiding the use of gear transmission, which can effectively reduce the shape of the motor and improve the transmission Efficiency, reduce noise emissions, extend the service life of the motor, reduce manufacturing and maintenance costs; in addition, the cleaning water enters from the installation side end surface of the rear end cover 7 of the mandrel 2, and the installation side end surface of the front end cover 4 leads out, cold water in, hot water out, by The cleaning water transfers the internal heat of the motor to the outside. It not only uses the heat generated by the motor to increase the water temperature to improve the cleaning effect, but also forms a water cooling system for the motor at the center of the shaft of the mandrel 2, reducing the temperature of the center of the motor and improving the cooling of the motor. The effect improves the efficiency of the motor; the ingenious concept that the motor lead 9 is drawn from the perforation of the mandrel 2 connects the winding lead on the inner stator 5 to the outside of the motor through the inner hole of the mandrel, improving the safety of the electrical circuit structure of the motor.

In the above embodiment, the shape of the motor can be set as a flat disk type, which greatly reduces the volume, which brings great convenience to the whole machine factory.

Claims

A special motor for the brush plate of the cleaning equipment, and an inner stator (5) with windings fixedly connected to the middle part of the mandrel (2) is characterized in that the mandrels (2) on the front and back sides of the inner stator (5) are respectively arranged and rotated The front end cover (4) and the rear end cover (7) are matched, and an outer rotor (6) with a magnetic tile is connected between the front end cover (4) and the rear end cover (7), and the front end cover (4) forms a brush disc outside Connected to the mating surface, the shaft center of the mandrel (2) is axially provided with a water delivery hole (1), the motor lead (9) is led through the mandrel (2) through the hole, and the lead end of the motor lead (9) and the water delivery The water inlet end of the through hole (1) is located on the end face of the rear end cover (7) of the mandrel (2) on the mounting side.
The motor for cleaning brushes of cleaning equipment according to claim 1, characterized in that a threading hole (10) is radially arranged on the mandrel (2), and the threading hole (10) and the water delivery through hole (1) are connected, The motor lead (9) is led out from the water inlet through the threading hole (10) and the water delivery through hole (1).
The motor for cleaning brushes of cleaning equipment according to claim 1, wherein an L-shaped threading hole (10) is provided on the mandrel (2) for threading the motor lead (9).
The motor for cleaning brushes of cleaning equipment according to claim 1, characterized in that the mandrel (2) has a stepped structure with a small front and a large axis in the axial direction, and the mandrel (2) is used to install a rear end cover (7) ) The diameter of the section is larger than that used to install the inner stator (5) and the front end cover (4) section, and the mandrel (2) where the rear end cover (7) section is installed is provided with a threading hole (10) for threading the motor lead (9).
The motor for cleaning brushes of cleaning equipment according to claim 1, characterized in that the front end cover (4) and the rear end cover (7) respectively pass through a front bearing (11), a rear bearing (8) and a mandrel (2 ) Turn to fit.
The motor for cleaning brushes of cleaning equipment according to claim 1, characterized in that an oil seal (3) is provided at the matching position between the front end cover (4) and the mandrel (2).