主权项 |
1. A joint comprising:
a joint main body; an inner tubular portion and an outer tubular portion, which are located in the joint main body, and which define an insertion space into which a pipe is insertable; a cap fitted on the outside of the outer tubular portion and connected thereto by projection-recess engagement; and a retainer mechanism for retaining the pipe, the retainer mechanism located between the outer tubular portion and the cap, wherein, a cutout portion is formed in the outer tubular portion, an engagement member to engage with the cutout portion is connected to the cap at an outer peripheral portion thereof by the projection-recess engagement, and a restricting portion to restrict the cap from coming undone is located between the cutout portion and the engagement member.
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