Flexible pipe end portion connection structure

A flexible pipe end portion connection structure, comprising a flexible pipe body and a joint,

• the joint comprises a first end and a second end opposite to each other, and has a channel extending through the joint in a direction from the first end to the second end, and an inner sidewall of the first end of the joint has a plurality of first stepped structures, an inner diameter of a portion of the channel corresponding to the first stepped structure gradually decreases in the direction from the first end to the second end, and
• at least a part of an end of the flexible pipe body is inserted into the first end of the joint to fit with the first stepped structure,
• wherein a surface of a portion of the flexible pipe body inserted into the joint has a plurality of second stepped structures, and the plurality of first stepped structures are matched with the second stepped structures so that the portion of the flexible pipe body inserted into the joint fits with the first stepped structure and an inner sidewall of each of the plurality of first stepped structures is in direct contact with a step surface of a corresponding one of the second stepped structures, and
• an inner sidewall of one of the plurality of first stepped structures closest to an outer sidewall in contact with the inserted flexible pipe body and a direction from the first end to the second end form an included angle of 5° to 10° to form a draft angle.

A flexible pipe end portion connection structure, comprising a flexible pipe body and a joint,

• the joint comprises a first end and a second end opposite to each other, and has a channel extending through the joint in a direction from the first end to the second end, and an inner sidewall of the first end of the joint has a plurality of first stepped structures, an inner diameter of a portion of the channel corresponding to the first stepped structure gradually decreases in the direction from the first end to the second end, and
• at least a part of an end of the flexible pipe body is inserted into the first end of the joint to fit with the first stepped structure,
• wherein a surface of a portion of the flexible pipe body inserted into the joint has a plurality of second stepped structures, and the plurality of first stepped structures are matched with the second stepped structures so that the portion of the flexible pipe body inserted into the joint fits with the first stepped structure and an inner sidewall of each of the plurality of first stepped structures is in direct contact with a step surface of a corresponding one of the second stepped structures,
• a portion of the joint corresponding to the plurality of first stepped structures has a through hole connecting an outer sidewall and an inner sidewall of the joint, and
• each step of the plurality of first stepped structures has at least one through hole, and each through hole is filled with adhesive.