A top stop for a slide fastener includes a first body portion, which includes a channel having an inlet at a first side of the top stop and an outlet at a second side of the top stop. The channel is defined by a channel first side wall and a channel second side wall, and a channel bottom surface therebetween. The channel second side wall includes a protruding portion, which defines an abutment protrusion in the channel. A distance parallel to the longitudinal axis of the top stop between the channel first side wall and channel second side wall defines a channel width. The channel width extending from the abutment protrusion to the channel first side wall is less than the channel width at the inlet and the channel width at the outlet.

The present invention discloses a sealed zipper top stop and a zipper. The sealed zipper top stop comprises a body, wherein a groove matched with one end of a slider close to the body is arranged at one side of the body close to the slider; and two elastic clamping tongues, wherein one end of each of the two elastic clamping tongues is arranged at the bottom of the groove, and the other end extends towards a direction away from the body. According to the present invention, the groove matched with the slider is arranged on one side of the body close to the slider, so that the slider can fit closely with the body when moving to the body without creating a gap, and the sealing effect is good.

A sealed zipper top stop and a zipper. The sealed zipper top stop includes a body, wherein a groove matched with one end of a slider close to the body is arranged at one side of the body close to the slider; and two elastic clamping tongues, wherein one end of each of the two elastic clamping tongues is arranged at the bottom of the groove, and another end of each of the two elastic clamping tongues extends towards a direction away from the body. The groove matched with the slider is arranged on one side of the body close to the slider, so that the slider can fit closely with the body when moving to the body without creating a gap and the sealing effect is good.

A top stop for a slide fastener includes a first body portion, which includes a channel having an inlet at a first side of the top stop and an outlet at a second side of the top stop. The channel is defined by a channel first side wall and a channel second side wall, and a channel bottom surface therebetween. The channel second side wall includes a protruding portion, which defines an abutment protrusion in the channel. A distance parallel to the longitudinal axis of the top stop between the channel first side wall and channel second side wall defines a channel width. The channel width extending from the abutment protrusion to the channel first side wall is less than the channel width at the inlet and the channel width at the outlet.

A lower stop assembly for slide fasteners comprises a left stop member and a right stop member. The inside of the right stop member is provided with a right slot and an annular orifice both extending in the direction of the inside, the annular orifice being located at the front end of the right slot and in direct communication with an opening of the right slot. The left stop member can be movably inserted into the opening of the right slot and then released from lateral notches of the right slot. As the left stop member can be released from the lateral notches of the right slot, when the left stop member needs to retreat from the right slot, the left stop member may rotate around the outer lateral wall of the annular orifice under the drive of the left slide fastener belt to come out from the right slot.