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Vacuum cleaner having electric motor protective device

A vacuum cleaner and motor protection technology, applied in the field of vacuum cleaners, can solve the problems of insufficient air volume, increased number of parts, and inability to effectively and fully prevent the motor from overloading, and achieve the effect of full protection, rapid and protection

Inactive Publication Date: 2003-07-02
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the amount of air flowing to the motor casing (24) is not sufficient, therefore, the overload operation of the motor cannot be effectively and fully prevented
In addition, the structure of the conventional technology is relatively complicated, requiring the use of some other structural components such as pipes, which not only increases the number of components, but also complicates the assembly process

Method used

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  • Vacuum cleaner having electric motor protective device
  • Vacuum cleaner having electric motor protective device
  • Vacuum cleaner having electric motor protective device

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Embodiment Construction

[0026] First, see Figure 4 and Figure 5 As shown, the overall structure of the vacuum cleaner of the present invention will be described.

[0027] The body of the vacuum cleaner is composed of an upper box body (110) and a lower box body (170) arranged at the upper part and the lower part respectively. The interiors of the upper case (110) and the lower case (170) are provided with the following components.

[0028] A motor casing (160) is arranged in front of the upper part of the lower box (170), and a dust collection box (140) is arranged in the rear. The dust collecting box (140) filters the air containing foreign matters flowing into the main body of the vacuum cleaner, and then discharges the filtered air to the outside through the motor casing (160).

[0029] As long as the above-mentioned dust collection box (140) can filter the foreign matter contained in the air flowing into the vacuum cleaner body, then the dust collection box (140) can adopt any structure, for...

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Abstract

A vacuum cleaner with motor protector is composed of a main body with upper and lower casings, a motor and its shell, a dust-collecting box, and a filter. It features that a pressure switch and an air throttle are installed on the top surface of motor shell. The lower pressure in motor shell can be sensed by the said pressure switch and thus the air throttle is opened for allowing external air to directly flow into it for protecting the motor.

Description

1. Technical field [0001] The invention relates to a vacuum cleaner, in particular to a vacuum cleaner with a motor protection device which can prevent the motor from overloading. 2. Background technology [0002] Such as figure 1 As shown, a general vacuum cleaner includes a main body (2); a connecting hose (4) is connected to the main body; an extension pipe (6) is connected to the connecting hose (4); the suction pipe (8) is arranged at the lower end of the above-mentioned extension pipe . [0003] The inside of the body (2) is provided with a driving motor generating suction and a filter device for filtering the inhaled foreign matter air. In addition, the above-mentioned connecting hose (4) is made of flexible material, and is connected with the body (2) and the extension tube (6). The extension tube (6) usually has a retractable structure, and the upper part of the extension tube is provided with a handle for the user to hold. [0004] The suction generated by the ...

Claims

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Application Information

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IPC IPC(8): A47L9/28
Inventor 地宪平
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD