Mosquito net elevator

Abstract

The mosquito net elevator includes a driver, a driving gear and elevating pulleys in the same number as the drawing points. It features that around the driving gear there are drawing units in the same number as the drawing points. Each drawing unit consists of one casing, one middle shaft, one driven gear, one reel and one piece of elevating rope. It also features that between the driven gear and the reel in each drawing unit there is an overload separator and one brake. The elevator is superior in that each drawing unit is used to draw a piece of rope and thus there is no twisting failure and that the elevator elevates the net in balanced and regular mode.

Description

technical field [0001] The invention relates to a 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] 1. When the mosquito net lands, 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 r...

AI Technical Summary

Problems solved by technology

[0003] 1. When the mosquito net lands, 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] 2. 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. Changes, so it is troublesome to keep the height of the connection point between each lifting rope and the account body equal;

[0005] 3.88100560.6 patent and 91230333.6 patent, the landing of the mosquito net depends on the reverse rotation of the motor to release the lifting rope. After landing, it cannot stop automatically. It must wait for the mosquito net to land to the bottom before turning off the power, otherwise the mosquito net will be raised again or even cause failure. 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] 4. 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 fall automatically after it is raised.

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