Suction cup and vacuum suction cup having same

A vacuum sucker, comprising a sucking disc, a sucking disc cover, a slider assembly, and an elastic component, wherein

• a connecting portion of the sucking disc is positioned to the sucking disc cover by a mandrel, and the elastic component is provided between the sucking disc cover and the sucking disc,
• the slider assembly comprises a slider having a stepped surface and a slider cover covered over the slider, wherein
• the sucking disc comprises a sucking disc body, the sucking disc body has a connecting portion at an outer side and a sucking surface at an inner side, the sucking disc body comprises a soft rubber layer and a hard rubber layer, the soft rubber layer and the hard rubber layer together form the sucking surface of the sucking disc body, and the hardness of the soft rubber layer is lower than the hardness of the hard rubber layer;
• wherein the soft rubber layer has an annular structure, a surface of the hard rubber layer is provided with a mounting groove for cooperating with the soft rubber layer, and an outer surface of the soft rubber layer is not lower than an outer surface of the hard rubber layer.

A vacuum sucker, comprising a sucking disc, a sucking disc cover, a slider assembly, and an elastic component, wherein

• a connecting portion of the sucking disc is positioned to the sucking disc cover by a mandrel, and the elastic component is provided between the sucking disc cover and the sucking disc,
• the slider assembly comprises a slider having a stepped surface and a slider cover covered over the slider, wherein
• the sucking disc comprises a sucking disc body, the sucking disc body has a connecting portion at an outer side and a sucking surface at an inner side, the sucking disc body comprises a soft rubber layer and a hard rubber layer, the soft rubber layer and the hard rubber layer together form the sucking surface of the sucking disc body, and the hardness of the soft rubber layer is lower than the hardness of the hard rubber layer;
• wherein the soft rubber layer has an annular structure, a surface of the hard rubber layer is provided with a mounting groove for cooperating with the soft rubber layer, and an outer surface of the soft rubber layer is not lower than an outer surface of the hard rubber layer;
• wherein the annular structure has a gradually increased thickness from outside to inside in a radial direction.

A vacuum sucker, comprising a sucking disc, a sucking disc cover, a slider assembly, and an elastic component, wherein

• a connecting portion of the sucking disc is positioned to the sucking disc cover by a mandrel, and the elastic component is provided between the sucking disc cover and the sucking disc,
• the slider assembly comprises a slider having a stepped surface and a slider cover covered over the slider, wherein
• the sucking disc comprises a sucking disc body, the sucking disc body has a connecting portion at an outer side and a sucking surface at an inner side, the sucking disc body comprises a soft rubber layer and a hard rubber layer, the soft rubber layer and the hard rubber layer together form the sucking surface of the sucking disc body, and the hardness of the soft rubber layer is lower than the hardness of the hard rubber layer;
• wherein the soft rubber layer has an annular structure, a surface of the hard rubber layer is provided with a mounting groove for cooperating with the soft rubber layer, and an outer surface of the soft rubber layer is not lower than an outer surface of the hard rubber layer;
• wherein the mounting groove has a multi-stepped surface structure.

A vacuum sucker, comprising a sucking disc, a sucking disc cover, a slider assembly, and an elastic component, wherein

• a connecting portion of the sucking disc is positioned to the sucking disc cover by a mandrel, and the elastic component is provided between the sucking disc cover and the sucking disc,
• the slider assembly comprises a slider having a stepped surface and a slider cover covered over the slider, wherein
• the sucking disc comprises a sucking disc body, the sucking disc body has a connecting portion at an outer side and a sucking surface at an inner side, the sucking disc body comprises a soft rubber layer and a hard rubber layer, the soft rubber layer and the hard rubber layer together form the sucking surface of the sucking disc body, and the hardness of the soft rubber layer is lower than the hardness of the hard rubber layer;
• wherein the soft rubber layer has an annular structure, a surface of the hard rubber layer is provided with a mounting groove for cooperating with the soft rubber layer, and an outer surface of the soft rubber layer is not lower than an outer surface of the hard rubber layer;
• wherein the hard rubber layer and the soft rubber layer are formed by integral injection molding or press-molding.