Assembly structure of dust cap and steering device including the same

An assembly structure of a dust cap being coupled to an assembly part of a rack housing which is open such that a steering shaft is inserted therethrough,

• wherein:
• the dust cap includes
• a body provided in a hollow tube shape through which the steering shaft passes,
• a first coupling portion bent to extend outward from the body and press-fitted onto an outer circumferential surface of the assembly part, and
• a second coupling portion provided to be spaced a certain interval from the first coupling portion and inserted into the assembly part;
• and
• the assembly part includes
• an insertion portion provided such that an inner diameter thereof gradually decreases from an upper portion to a lower portion thereof;
• and
• a mounting portion extending vertically from a lower end of the insertion portion;
• the second coupling portion is provided such that, when assembled to the assembly part, a gap is formed between the second coupling portion and an inner surface of the assembly part;
• the second coupling portion further includes a tilt preventing protrusion portion formed to protrude outward;
• and
• the mounting portion has a tilt preventing groove portion into which the tilt preventing protrusion portion is inserted.

A steering device comprising:

• a rack housing including an assembly part which is formed to extend upward from a body, in which a rack bar is accommodated, and is open such that a steering shaft is inserted therethrough;
• and
• an assembly structure of a dust cap coupled to the assembly part,
• wherein:
• the dust cap includes
• a body provided in a hollow tube shape through which the steering shaft passes,
• a first coupling portion bent to extend outward from the body and press-fitted onto an outer circumferential surface of the assembly part, and
• a second coupling portion provided to be spaced a certain interval from the first coupling portion and inserted into the assembly part;
• and
• the second coupling portion is provided such that, when assembled to the assembly part, a gap is formed between the second coupling portion and an inner surface of the assembly part,
• the assembly part includes:
• an insertion portion provided such that an inner diameter thereof gradually decreases from an upper portion to a lower portion thereof;
• and
• a mounting portion extending vertically from a lower end of the insertion portion,
• the mounting portion is formed to protrude in an inner radial direction, and
• the second coupling portion further includes a rib formed to protrude outward.