Strut bearing assembly for vehicle
A strut bearing assembly includes: a first case coupled to an insulator mounted on a body of the vehicle, and having a strut disposed therethrough; a second case mounted under the first case in a top-to-bottom direction of the vehicle, configured to rotate relatively to the first case, and having the strut disposed therethrough; and a center plate disposed between the first and second cases, and configured to support the first case to rotate relative to the second case. The center plate has a ring shape with a hollow portion, and includes an inclined portion that is inclined downward toward an outside in a radial direction based on a central axis of the strut.
1. A strut bearing assembly for a vehicle, comprising:
a first case coupled to an insulator mounted on a body of the vehicle, and having a strut disposed therethrough;
a second case mounted under the first case in a top-to-bottom direction of the vehicle, configured to rotate relatively to the first case, and having the strut disposed therethrough; and
a center plate disposed between the first and second cases, and configured to support the first case to rotate relative to the second case,
wherein the center plate has a ring shape with a hollow portion, and includes an inclined portion that is inclined downward toward an outside in a radial direction based on a central axis of the strut, and
the center plate comprises a plate body, and the plate body includes the inclined portion, a vertical portion extended from an inner end of the inclined portion that vertically interfaces with at least a portion of the first case, and an end portion extended from an outer end of the inclined portion.
2. The strut bearing assembly of claim 1 , wherein the second case comprises:
a vertical part disposed adjacent to the vertical portion;
an inclined part extended from the vertical part, and disposed adjacent to the inclined portion; and
a horizontal part extended horizontally from the inclined part and disposed adjacent to the end portion, such that the second case is disposed adjacent to the plate body.
3. The strut bearing assembly of claim 2 , wherein the vertical part includes an insertion protrusion disposed on an outer surface thereof, and the center plate is deformed by the insertion protrusion in an assembled state of the center plate and the second case.
4. The strut bearing assembly of claim 1 , wherein the first case comprises a first hook disposed in a circumferential direction of the first case,
wherein the second case comprises a second hook disposed in a circumferential direction of the second case, and
wherein the first and second hooks are coupled to each other.
5. The strut bearing assembly of claim 1 , wherein the second case is made of a polyamide material.
6. The strut bearing assembly of claim 1 , wherein the center plate is made of polybutylene terephthalate (PBT).
7. The strut bearing assembly of claim 1 , wherein the center plate is made of a material having rigidity lower than a rigidity of the second case.
8. The strut bearing assembly of claim 1 , wherein the center plate further includes a plurality of grooves disposed on an upper surface of the inclined portion, and configured to contain a lubricant.
9. The strut bearing assembly of claim 8 , wherein the plurality of grooves includes first grooves elongated in the radial direction and spaced apart at intervals in a circumferential direction based on the central axis of the strut.
10. The strut bearing assembly of claim 9 , wherein the plurality of grooves includes second grooves elongated in the circumferential direction, spaced apart at intervals in the radial direction, and disposed between adjacent first grooves, among the first grooves.
11. The strut bearing assembly of claim 8 , wherein the plurality of grooves includes grooves elongated in a circumferential direction based on the central axis of the strut, and spaced apart at intervals in the radial direction.