Sucker with sealing element

Abstract

The invention discloses a sucker with a sealing element. The sucker comprises a framework which is covered with an elastic colloid, a connection rod is arranged at the back of the framework, a sucker cover is sleeved on the connection rod, the sealing element is arranged at the bottom of the elastic colloid, a protruding ring abutting against the back of the elastic colloid is arranged on the sucker cover, and a pushing element which abuts against the back of the sucker cover and is connected with the connection rod is arranged at the back of the sucker cover. According to the sucker, the sealing element is arranged at the bottom of the elastic colloid, a contact friction plane is formed on the outer periphery of the sealing element, and when the sucker is tightly absorbed, vacuum absorption force is generated in the sealing element, so that enough vacuum absorption force and friction can be guaranteed simultaneously. Besides before and during tight absorption of the sucker, the sealing element is not pulled or not pulled completely into the inside of the protruding ring, the sealing element and base plane sealing contact is guaranteed, air leakage of a vacuum cavity due to space between the sealing element and a base plane is prevented and enough vacuum absorption force is guaranteed.

Description

【Technical field】 [0001] The invention relates to a suction cup. 【Background technique】 [0002] Suction cup is widely used because it is easy to use, glues during use, and does not need to drill the wall, but the suction force of existing suction cups is not large enough, and it is easy to come off, and the structure of existing suction cups needs to be improved. The sealing ring provided on the existing suction cup is generally arranged on the outer edge of the bottom surface of the elastic colloid, so that the bottom surface of the suction cup can generate vacuum adsorption force, but the friction area with the base surface is too small, so that the friction force is not large enough, and the suction cup is easy to be damaged during use. Insufficient frictional force leads to falling off, and such a sealing ring is adsorbed on the base surface, and gaps are prone to appear, resulting in air leakage in the vacuum chamber generated between the suction cup and the base surfa...

AI Technical Summary

Problems solved by technology

[0002] Suction cups are widely used because they are easy to use, glued, and do not need to drill walls. However, the suction force of existing suction cups is not strong enough, and they are easy to fall off. Therefore, the structure of existing suction cups needs to be improved.

The sealing ring provided on the existing suction cup is generally arranged on the outer edge of the bottom surface of the elastic colloid, so that the bottom surface of the suction cup can generate vacuum adsorption force, but the friction area with the base surface is too small, so that the friction force is not large enough, and the suction cup is easy to be damaged during use. Insufficient friction and falling off, and such a sealing ring is adsorbed on the base surface, which is prone to gaps, resulting in air leakage in the vacuum chamber generated between the suction cup and the base surface, resulting in the suction cup falling off

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