CN201225301Y - Electric fan - Google Patents

Abstract

The utility model discloses an electric fan, which comprises a fan head (1), a body (2) and an oscillating mechanism (3). The oscillating mechanism (3) comprises a driving device (31) and a A gear transmission pair (32) with a large transmission ratio, the middle and small gears (321) of the gear transmission pair (32) are coaxially arranged with the output shaft of the driving device (31), and the large gear (322) is arranged with the fan head (1) The flange shaft (311) is coaxially connected. The fan head of the electric fan can swing at a large angle, thereby effectively meeting the need for air supply in a large angle range. In addition, the fan head (1) and the body (2) are plugged and connected to each other through the plug connector (6). Through this detachable connection, the electric fan can be installed in a small area and in a small space. The storage brings convenience, and also facilitates cleaning and maintenance of the fan head (1) and the body (2).

Description

an electric fan

technical field

The utility model relates to an electric fan, in particular to an electric fan with a large-angle shaking head mechanism.

Background technique

At present, in order to increase the air supply range of electric fans to meet the needs of large-scale air supply, a wide variety of oscillating electric fans have appeared on the market. However, the oscillating mechanism of the oscillating electric fan in the prior art generally realizes shaking the head through the crank linkage mechanism, and the swing angle of the crank linkage mechanism is limited, the swing angle is small, and the maximum swing angle is generally It is 80 degrees, so it is difficult to meet the demand for air supply in a large angle range.

In addition, the fan head and the body of the existing electric fan are generally fixedly connected together by fastening screws, which is inconvenient to disassemble. When the electric fan is idle, it is usually just placed directly in a corner, but for a small storage space, sometimes it is difficult to directly store the entire electric fan, so it is necessary to place the fan head of the fan It is stored separately from the fuselage. At the same time, for the convenience of maintenance, it is sometimes necessary to disassemble the fan head and the fuselage and handle them separately. However, because the disassembly and assembly process is cumbersome and requires other tools, it is inconvenient to disassemble and install; in addition, it is also inconvenient to clean the fan head and the body.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an electric fan whose fan head can swing at a large angle, thereby effectively satisfying the need for air supply in a large angle range.

In order to achieve the above technical purpose, the utility model is realized according to the following technical scheme: an electric fan, including a fan head, a body and an oscillating mechanism, and the oscillating mechanism includes a driving device and a gear with a large transmission ratio connected to the driving device In the transmission pair, the small gear and the output shaft of the drive device are coaxially arranged in the gear transmission pair, and the large gear is coaxially connected with the flange shaft of the fan head.

The driving device is a synchronous motor, which is fixedly arranged on the fuselage through a fixing plate.

The gear transmission ratio value of the gear transmission pair is 2:1.

The fan head and the body are plugged and connected to each other through a plug connector.

The plug connector includes a first plug connector with a slot connected to the fan head, and a second plug connector with a protruding plug block, the slot of the first plug connector is connected to the second plug connector. The protruding plug of the connector fits the plug.

Compared with the prior art, the beneficial effects of the utility model are:

(1) Since the utility model improves the traditional crank-connecting rod electric fan's oscillating mechanism into a gear transmission mechanism with a large gear transmission ratio, the swing range of the electric fan head is increased, and the swing range can reach about 150 degrees, satisfying The demand for air supply in a wide angle range makes the use of electric fans more humanized.

(2) The utility model connects the fan head and the fuselage of the electric fan to each other through a plug connector, which facilitates the disassembly and installation of the fan head and the fuselage, and is a storage belt for the electric fan in a small area and a small space. It is convenient, and it is also convenient for cleaning and maintenance of the fan head and the body.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:

Fig. 1 is a structural schematic diagram of the utility model electric fan.

Fig. 2 is an enlarged view of I place in above-mentioned Fig. 1.

Fig. 3 is a schematic diagram of the shaking head mechanism in the utility model.

Fig. 4 is a schematic diagram of the structure of the plug-in connector in the present invention.

Detailed ways

As shown in Figures 1 to 3, an electric fan described in the present utility model includes a fan head 1, a body 2 and an oscillating mechanism 3, and the oscillating mechanism 3 includes a driving device 31 and is connected to the driving device 31. A gear transmission pair 32 with a large transmission ratio, the small gear 321 of the gear transmission pair 32 is coaxially arranged with the output shaft of the drive device 31, and the large gear 322 is coaxially connected with the flange shaft 11 of the fan head 1. In the present utility model, the drive device is a synchronous motor, which is fixedly arranged on the fuselage 2 through the fixed plate 4, and the synchronous motor is connected with the control switch 5 of the front shell part of the electric fan fuselage 2 at the same time. The shaking head button in the control switch 5 is used to drive the start and stop of the synchronous motor. When the shaking head button is pressed, the synchronous motor starts to drive the small gear 321 to rotate, thereby driving the transmission of the large gear 322 meshing with the small gear 321, thereby driving the flange The shaft 11 rotates so as to realize the swing of the fan head 1 at a large angle. Generally speaking, the gear transmission ratio of the gear transmission pair 32 is 2:1. Through the meshing transmission of the large and small gears, the swing range of the fan head of the electric fan is greatly increased, so that a wide range of air supply can be effectively realized. Usually, the air supply range can reach about 150 degrees, and compared with the existing oscillating fan with an air supply range of 80 degrees, it can better meet the needs of users for a larger air supply range.

In addition, as shown in Fig. 1, Fig. 2 and Fig. 4, the fan head 1 and the body 2 of the electric fan are connected by plugging the plug connector 6 into each other. The first plug-in piece 61 with the slot 611 connected to the fan head 1, and the second plug-in piece 62 with the protruding plug-in block 621, the slot 611 of the first plug-in piece 61 is connected with the second plug-in piece The protruding plug 621 of the connector 62 is mated to form a detachable connection. Through this detachable connection method, it brings convenience for storage in a small area and a small space after the fan head 1 and the body 2 are disassembled and separated, and also facilitates the cleaning of the fan head 1 and the body 2 after they are disassembled and separated. and maintenance.

Claims (5)

1. An electric fan, comprising a fan head (1), a body (2) and an oscillating mechanism (3), characterized in that: the oscillating mechanism (3) includes a driving device (31) and a driving device (31) The connected gear transmission pair (32) with a large transmission ratio, the middle and small gears (321) of the gear transmission pair (32) are coaxially arranged with the output shaft of the drive device (31), and the large gear (322) is connected with the fan head (1 ) flange shaft (311) coaxial connection. 2. The electric fan according to claim 1, characterized in that: the driving device (31) is a synchronous motor, which is fixedly arranged on the body (2) through the fixing plate (4). 3. The electric fan according to claim 1, characterized in that: the gear transmission ratio of the gear transmission pair (32) is 2:1. 4. The electric fan according to any one of claims 1 to 3, characterized in that: the fan head (1) and the body (2) are plugged and connected to each other through a plug connector (6). 5. The electric fan according to claim 4, characterized in that: the plug connector (6) includes a first plug (61) with a slot (611) connected to the fan head (1) , and a second plug (62) with a protruding plug (621), the slot (611) of the first plug (61) and the protruding plug of the second plug (62) The block (621) is mated and plugged.

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