Mosquito net elevator with clutch

Abstract

The mosquito net elevator with clutch includes driver, rope twisting wheel and elevating rope and features the clutch between the driver and the rope twisting wheel. During raising the mosquito net, the driver is coupled via the clutch to the rope twisting wheel, so that the driving force of the driver is transferred to the rope twisting wheel to draw the net to ascend. During lowering the mosquito net, the driver is separated by the clutch from the rope twisting wheel, so that the wheel rotates alone and the net descend on its self weight. Therefore, the mosquito net elevator can be so designed that the net ascene speed is relatively low and the net descent speed is relatively high, and this results in low production cost and long service life of the mosquito net.

Description

technical field [0001] The invention relates to a lifting mechanism for lifting a mosquito net, in particular to a mosquito net lifting mechanism with a clutch. Background technique [0002] The lifting mechanism of existing known lifting mosquito net has a lot of, more representative has No. 96245927.5 patent, No. 88100560.6 patent, No. 97245992.8 patent, No. 01242473.0 patent, the common feature of these lifting mechanisms is to be called with a " rope wheel " or The rope wheel of the "wire winding coil" is used to wind the lifting rope called "lifting rope" or "guyline" to achieve the purpose of lifting the mosquito net. The disadvantages are: [0003] No. 88100560.6 patent, No. 97245992.8 patent and No. 01242473.0 patent's lifting mechanism are all electric, lack the landing self-stop device that automatically adapts to the mosquito nets of different heights, the user of No. 97245992.8 patent and No. 01242473.0 patent must manually stop, if negligence Lifting rope may b...

AI Technical Summary

Problems solved by technology

[0003] No. 88100560.6 patent, No. 97245992.8 patent and No. 01242473.0 patent's lifting mechanism are all electric, lack the landing self-stop device that automatically adapts to the mosquito nets of different heights, the user of No. 97245992.8 patent and No. 01242473.0 patent must manually stop, if negligence It may cause the lifting rope to be rewound back to the cable wheel and cause failure. The landing self-stopping device of No. 01242473.0 patent cannot automatically adapt to mosquito nets of different heights, and the commercialized electric lifting mosquito nets require automatic adaptation to different height requirements of different families.

[0004] No. 88100560.6 patent, No. 97245992.8 patent and No. 01242473.0 patent's lifting mechanism all lack flexible and reliable braking devices, and the frictional resistance of the sponge used for braking to the wire coil in the No. 88100560.6 patent also increases when exerting the braking effect The load of the motor itself will also wear out quickly and lose its effect. No. 97245992.8 patent and No. 01242473.0 patent do not mention the braking mechanism at all. automatic landing

[0005] When the mosquito net landed, the hoisting ropes of all hoisting mechanisms in the background technology were pulled out of the noose wheel by the self-weight traction of the mosquito net. A certain part of the mosquito net is accidentally supported or hooked by a foreign object and cannot be landed, or the lifting rope is separated from the mosquito net due to children playing and washing, so that the lifting ropes cannot be pulled out of the rope wheel synchronously. In this way, it is easy to cause the hoisting rope that has lost traction to loosen and come out of the rim groove of the cable wheel or be rewound back to the cable wheel to cause a "rope chaos" fault. The noose wheel is entangled and out of groove and loses the correct connection relationship with the noose wheel, so that the lifting mechanism cannot work normally

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