Electric mosquito net elevating mechanism

Abstract

The electric mosquito net elevating mechanism includes at least two electric elevators and each of the electric elevators includes a motor, a casing, a reel, a piece of elevating rope and a brake to prevent the reel from rotating inversely. The reel is connected to the brake, the the elevating rope has a end connected to the reel and the other end connected to the lower edge of the net via a string of rings. Each electric elevator draws only one elevating rope, and this can prevent twisting of rope and ensure the levelness of the elevated net.

Description

technical field [0001] The invention relates to an electric lifting mechanism for lifting and lowering mosquito nets. Background technique [0002] Existing known lifting mosquito net has a variety, more representative has: No. 96245927.5 patent, No. 91230333.6 patent, No. 88100560.6 patent, the lifting mechanism of these lifting mosquito nets all is to concentrate all hoisting ropes into one called " cable wheel " Perhaps the reel of " wire winding dish " is rolled in and released and realizes the lifting of mosquito net, makes it to have following shortcoming: [0003] a) When the mosquito net falls, the lifting rope is pulled out of the reel by the self-weight traction of the tent body. If any one or more lifting ropes lose the traction of the self-weight of the tent body, this situation is more likely to occur in a certain part of the tent body. The part is supported and hooked by the bed or other items and cannot be landed, especially because the connection between the...

AI Technical Summary

Problems solved by technology

[0003] a) When the mosquito net falls, the lifting rope is pulled out of the reel by the self-weight traction of the tent body. If any one or more lifting ropes lose the traction of the self-weight of the tent body, this situation is more likely to occur in a certain part of the tent body. The part is supported and hooked by the bed or other items and cannot be landed, especially because the connection between the lifting rope and the tent body is separated due to children playing and washing, so that the lifting ropes cannot be pulled out of the reel synchronously. In this way, it is easier to cause the lifting rope that loses traction to loosen and come out of the drum or be rewound back to the drum, so that the lifting ropes will be entangled with each other like a mess or entangled with the drum and lose the correct connection with the drum. The lifting mechanism cannot work normally, and it is difficult to untie and repair. This kind of failure is called "rope chaos" failure.

[0004] b) The lifting speed and stroke of all lifting ropes in the background technology are synchronous, and the connecting points of the lifting rope and the tent must be at the same height to make the raised tent reach the top dead center at the same time, otherwise the tent will rise. The unevenness of each part will affect the appearance. From the actual use of the product of No. 96245927.5 patent, I found that the height of each connection point will often occur due to factors such as washing and changing installation, children playing, and the elastic expansion and contraction of the lifting rope. Change, so it is more troublesome to keep the height of the connection point between each lifting rope and the account body equal;

[0005] c) The landing of the mosquito net in patent No. 88100560.6 and patent No. 91230333.6 is achieved by reversing the motor to release the lifting rope. After landing, it cannot stop automatically. It must wait for the mosquito net to land to the end before turning off the power, otherwise the mosquito net will rise again or even cause malfunction. Moreover, its falling speed is the same as the rising speed, and it cannot be dropped quickly by the tent body by its own weight like the 96245927.5 patent, and the user will feel inconvenient if the speed is slow, especially it is obviously inconvenient to wait for the mosquito net to slowly fall before going to bed;

[0006] d) Patent No. 88100560.6 of the background technology uses the frictional resistance between the sponge and the wire coil to prevent the tent body from falling automatically. The braking effect is lost due to wear and tear. Patent No. 91230333.6 has no braking device, and the tent is easy to automatically fall after it is raised.

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