Safety door handle for toddlers
A safety door handle includes: a base part that has a base plate in which a lever hole into which a door handle is able to be fitted is formed and that is attached to one surface of a door; a fastening gear part that is coupled to a door handle shaft and has a gear provided on an outer circumferential surface; a central gear part that is gear-coupled to one side of the fastening gear part and has a diameter that is two times a diameter of the fastening gear part; and a main gear part that has the same diameter as the central gear part, is gear-coupled to one side of the central gear part, and has an auxiliary handle provided on one surface.
1 . A safety door handle for toddlers, the safety door handle comprising:
a base part that has a base plate in which a lever hole into which a door handle is able to be fitted is formed and that is attached to one surface of a door;
a fastening gear part that is coupled to a door handle shaft and has a gear provided on an outer circumferential surface;
a central gear part that is gear-coupled to one side of the fastening gear part and has a diameter that is two times a diameter of the fastening gear part; and
a main gear part that has the same diameter as the central gear part, is gear-coupled to one side of the central gear part, and has an auxiliary handle provided on one surface.
2 . The safety door handle of claim 1 , wherein the base part further includes:
a central gear hole through which the central gear part is fastened to one side of the lever hole;
a main gear hole through which the main gear part is fastened to one side of the central gear hole; and
fastening grooves formed at both sides of the base plate to correspond to portions between the central gear hole and the main gear hole.
3 . The safety door handle of claim 2 , wherein the central gear part further includes:
a central body that is coupled to the central gear hole; and
a central plate gear that is axially coupled to the central body and has a gear provided along a circumference.
4 . The safety door handle of claim 3 , wherein the main gear part further includes:
a main body that is coupled to the main gear hole; and
a main plate gear that is axially coupled to the main body and has a gear provided along a circumference.
5 . The safety door handle of claim 4 , wherein, when the auxiliary handle is pulled and the main plate gear rotates in one direction, the main gear part allows the central plate gear to rotate in the opposite direction from the main plate gear and allows the fastening gear part to rotate in the same direction as the main plate gear.
6 . The safety door handle of claim 5 , wherein the main gear part allows the door handle to rotate at an angle that is two times an angle of rotation of the auxiliary handle when the auxiliary handle rotates in the one direction.
7 . The safety door handle of claim 2 , further comprising a cover part coupled to one surface of the base part, wherein the cover part includes:
a cover main body that has a space corresponding to sizes of the central gear part and the main gear part;
fitting protrusions that protrude from an inner side surface of the cover main body and are coupled to the fastening grooves; and
a cover ring part that is fastened to an opening, which is formed in one longitudinal side of the cover main body, due to an elastic force allowing the opening to widen and covers the fastening gear part.
8 . The safety door handle of claim 7 , further comprising a lock part that is disposed on one side of the cover main body and controls rotation of the central gear part, wherein the lock part includes:
a communication hole that passes through the one side of the cover main body to correspond to a position of the central gear part;
a stick pin that has one side inserted into the communication hole and is fastened to a gear of the central gear part; and
a head that is formed on the other end of the stick pin and linearly moves the stick pin back and forth.
9 . The safety door handle of claim 1 , wherein the fastening gear part further includes:
a main body part that has an inner circumferential surface accommodating the door handle shaft and consists of a one-side main body and an other-side main body by being cut in half through a center of a circle;
a fastening part that forms a fastening hole in a cut end surface of the one-side main body and includes a fastening protrusion, which is fitted and coupled to the fastening hole, on a cut end surface of the other-side main body;
a mounting wall that extends along a radius of the other-side main body and surrounds the door handle shaft; and
a lever accommodating part that extends from the mounting wall toward the door handle and is able to accommodate a central portion of the door handle.