Rolling brush structure with overload protection device
A technology of overload protection and rolling brush, applied in the installation of electrical equipment, suction nozzles, etc., can solve problems such as burning belts, heating, and damage to transmission motors
Inactive Publication Date: 2013-07-10
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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Problems solved by technology
[0011] However, the above-mentioned prior art roller brush structure has the following technical problems: the transmission motor 21 drives the roller brush 10 to rotate. 1. The connection between the transmission belt 23 and the drive shaft 22 of the transmission motor 21 will heat up rapidly, burn the belt, and cause certain damage to the transmission motor
Method used
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[0045] The structure of the roller brush provided with the overload protection device of the present invention will be described in detail below with reference to the accompanying drawings and embodiments. The same symbols are used for the same components in the present invention as in the prior art.
[0046] The rolling brush structure provided with the overload protection device of the present invention is installed inside the suction nozzle below the upright vacuum cleaner. Such as Figure 1 to Figure 3 As shown, the upright vacuum cleaner includes a handle 2 located on the upper part of the body 1, the front part of the body 1 is a front cover 4 combined with the bottom case 3, and a spare rigid suction pipe 6 is plugged into the spare parts rack 5 on the side wall of the bottom case 3 , The bottom of the body 1 is provided with a suction nozzle 9 that is combined with a suction nozzle upper cover 7 and a suction nozzle chassis 8 through a hook 33 along the ground to suck...
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The invention discloses a rolling brush structure with an overload protection device. The rolling brush structure comprises a rolling brush body driven by a transmission motor to rotate, a connecting shaft arranged along the central axis of the rolling brush body and bristles spirally arranged on the rolling brush body, wherein a semicircular shaft is sleeved outside the connecting shaft; the overload protection device is arranged at the joint between the rolling brush body and a transmission belt and comprises two coated ratchet wheels arranged opposite to each and two embedded ratchet wheels arranged in the coated ratchet wheels; and a spring is connected between the two embedded ratchet wheels. According to the rolling brush structure with the overload protection device, as the overload protection device is arranged at the joint between the rolling brush body and the transmission belt, when the rolling brush body is obstructed and stuck, the two embedded ratchet wheels slip unidirectionally to the inner side to be separated from the two coated ratchet wheels, the coated ratchet wheels rotate normally under the condition of no load, accordingly, overheating of the motor, caused by influence from large resistance, is avoided, and fracture caused by frictional heating between the transmission belt and a motor driving shaft is prevented.
Description
technical field [0001] The invention belongs to the field of vacuum cleaners, and in particular relates to a vacuum cleaner rolling brush structure provided with an overload protection device at the joint between the rolling brush and a transmission belt. Background technique [0002] The vacuum cleaner is a cleaning and sanitary appliance used to remove dust from floors, carpets, walls, furniture, clothing and various gaps. Generally speaking, a vacuum cleaner mainly includes a suction device and a suction pipeline. The suction device mainly formed by a motor and a fan is arranged in the body of the vacuum cleaner. The suction pipeline includes a suction head, a suction pipe and a suction hose. The head has a suction port opening downwards and communicates with the air inlet of the fan inside the vacuum cleaner body through a dust suction pipe and a dust suction hose. [0003] When the vacuum cleaner is running, the motor drives the impeller of the fan to rotate at a high ...
Claims
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Inventor 李洋张方刘惟惟
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD