| 摘要 |
<p>The present invention comprises: a head case having a stepped part formed on the inner circumferential surface thereof; and an adapter comprising a protruding part which has a through-hole formed therein, through which a valve passes, and is in the shape of a cylinder, a supporting part in the shape of a bowl and formed on the outer circumferential surface of the protruding part so as to support a valve spring, and a contact part which is in the shape of a ring and formed on the outer circumferential surface of the supporting part, and which has the front surface thereof in contact with a stepped surface of the stepped part and the rear surface thereof in contact with a body case. Accordingly, the present invention compresses the contact part of the adapter when the body case is coupled to the head case, thereby preventing the adapter from rotating and thus securely coupling the adapter to the coupling groove of the body case, and therefore can prevent the movement of the adapter during high-pressure gas injection. In other words, the present invention fundamentally prevents damage to components, such as a valve and a spring, caused by the movement of an adapter and thus can relatively improve the durability of a receptacle.</p> |
