Fastener

A fastener comprising:

• a fastener body that includes:
• a cylindrical portion that includes an insertion hole formed to penetrate therethrough from one end face to the other end face thereof;
• and
• a locking portion that protrudes outward from the other end face of the cylindrical portion;
• and
• an unlocking member that is formed to be inserted into the insertion hole,
• wherein the locking portion is formed to be inserted into an attachment hole of an attachment object from a front side, and to be exposed from the attachment hole from a rear side,
• wherein the locking portion includes an elastic claw that is locked to an edge of the attachment hole at the rear side,
• wherein the elastic claw is elastically reducible in diameter,
• wherein the unlocking member is movable in a position rearward of the elastic claw in a direction from the one end face to the other end face of the cylindrical portion,
• wherein the locking portion is reduced in diameter when the unlocking member is pushed,
• wherein the locking portion includes an extension part that is continuously formed with the elastic claw,
• wherein the unlocking member includes a pressing portion,
• wherein the pressing portion is brought into contact with the extension part when the unlocking member is pushed,
• wherein the elastic claw is reduced in diameter through a contact between the pressing portion and the extension part,
• wherein the elastic claw and the extension part form a cantilever piece, a root of the elastic claw being a base portion thereof, an end of the extension part being a free end thereof, and
• wherein the pressing portion includes a slope that is formed to reduce in diameter of the distal end of the extension part when the unlocking member is pushed.

A fastener comprising:

• a fastener body that includes:
• a cylindrical portion that includes an insertion hole formed to penetrate therethrough from one end face to the other end face thereof;
• and
• a locking portion that protrudes outward from the other end face of the cylindrical portion;
• and
• an unlocking member that is formed to be inserted into the insertion hole,
• wherein the locking portion is formed to be inserted into an attachment hole of an attachment object from a front side, and to be exposed from the attachment hole from a rear side,
• wherein the locking portion includes an elastic claw that is locked to an edge of the attachment hole at the rear side,
• wherein the elastic claw is elastically reducible in diameter,
• wherein the unlocking member is movable in a position rearward of the elastic claw in a direction from the one end face to the other end face of the cylindrical portion,
• wherein the locking portion is reduced in diameter when the unlocking member is pushed,
• wherein the locking portion includes an extension part that is continuously formed with the elastic claw,
• wherein the unlocking member includes a pressing portion,
• wherein the pressing portion is brought into contact with the extension part when the unlocking member is pushed,
• wherein the elastic claw is reduced in diameter through a contact between the pressing portion and the extension part,
• wherein the unlocking member further includes:
• a head portion;
• a pair of wall portions that extends from the head portion so as to be faced with each other;
• a connection portion that connects ends of the pair of wall portions;
• the pressing portion is formed on the connection portion;
• and
• a drop-preventing claw that is formed on the pair of wall portions, and
• wherein, in the insertion hole, a drop-preventing step is formed to be engaged with the drop-preventing claw and to prevent the unlocking member from dropping from the insertion hole.