阅读说明：本技术 电动鼓风机以及电动吸尘器 (Electric blower and electric dust collector ) 是由 加藤胜英 于 2020-02-26 设计创作，主要内容包括：本发明涉及电动鼓风机以及电动吸尘器,提供能够通过简单的结构实现长寿命化的电动鼓风机以及具备该电动鼓风机的电动吸尘器。电动鼓风机(1)具备风扇(2)以及使风扇(2)旋转的马达(11)。马达(11)具有转轴(27)、配置于转轴(27)的磁铁部(30)、主轴(26)以及轴承(32)。主轴(26)与配置于转轴(27)的风扇(2)一起旋转。轴承(32)将转轴(27)保持为能够旋转。风扇(2)将吸入侧作为靠磁铁部(30)侧而配置。轴承(32)相对于风扇(2)而配置于与磁铁部(30)相反一侧。(The invention relates to an electric blower and an electric dust collector, and provides an electric blower which can realize long service life through a simple structure and an electric dust collector with the electric blower. The electric blower (1) is provided with a fan (2) and a motor (11) for rotating the fan (2). The motor (11) has a rotating shaft (27), a magnet section (30) disposed on the rotating shaft (27), a main shaft (26), and a bearing (32). The main shaft (26) rotates together with a fan (2) disposed on a rotating shaft (27). The bearing (32) rotatably holds the rotating shaft (27). The fan (2) is disposed with the suction side closer to the magnet section (30). The bearing (32) is disposed on the opposite side of the magnet section (30) with respect to the fan (2).)

1. An electric blower is characterized by comprising:

a fan; and

a motor for rotating the fan,

the motor comprises:

a rotating shaft;

a magnet portion disposed on the rotating shaft;

a main shaft rotating together with the fan disposed on the rotating shaft; and

a bearing for rotatably holding the rotating shaft,

the fan is disposed with the suction side near the magnet portion,

the bearing is disposed on the opposite side of the magnet portion with respect to the fan.

2. The electric blower of claim 1,

the fan is a turbofan.

3. The electric blower of claim 2,

the bearing is disposed at a position inside the fan.

4. The electric blower according to any one of claims 1 to 3,

a drive circuit for driving the motor is provided,

the drive circuit is disposed upstream of the fan.

5. An electric dust collector is characterized in that,

an electric blower according to any one of claims 1 to 4.

Technical Field

Embodiments of the present invention relate to an electric blower having a motor with a magnet portion and an electric vacuum cleaner having the electric blower.

Background

Conventionally, a rotating shaft of a motor of an electric blower is rotatably held by a plurality of bearings. Among such electric blowers, the following electric blowers are known: in order to avoid a pressure difference between one end portion and the other end portion of the bearing due to a negative pressure generated by rotation of the fan, a lubricant between the rotating body and the holder holding the rotating body inside the bearing leaks out to shorten the life, and the end portion of the bearing is covered with another member. However, it is preferable to simplify the structure of the electric blower and extend the life thereof without using other components.

Disclosure of Invention

The invention provides an electric blower which can realize long service life by a simple structure and an electric dust collector with the electric blower.

Drawings

Fig. 1 is a sectional view showing an electric blower according to an embodiment.

Fig. 2A is a perspective view showing a fan of an electric blower according to an embodiment from the suction side.

Fig. 2B is a perspective view showing a fan of the electric blower according to the embodiment from the exhaust side.

Fig. 3 is a sectional view of the electric blower according to the embodiment at a position corresponding to I-I in fig. 1.

Fig. 4 is a perspective view showing an electric vacuum cleaner including an electric blower according to an embodiment.

The electric blower of the embodiment includes a fan and a motor for rotating the fan. The motor includes a rotating shaft, a magnet portion disposed on the rotating shaft, a main shaft, and a bearing. The main shaft rotates together with a fan disposed on the rotating shaft. The bearing rotatably holds the rotating shaft. The fan has the suction side disposed closer to the magnet portion. The bearing is disposed on the opposite side of the magnet portion with respect to the fan.