Rotation induction device for vehicle

Patent metadata

Field	Value
Publication number	US-11629753-B2
Application number	US-202117337639-A
Country	US
Kind code	B2
Filing date	Jun 3, 2021
Priority date	Jun 3, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A rotation induction device for a vehicle, includes an upper case member, a lower case member, a center plate, and an inflow prevention part. The upper case member has a piston rod disposed therethrough. The lower case member, disposed under the upper case member, has the piston rod disposed therethrough. The center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate, is configured to induce either one or both of the upper and lower case members to rotate. The inflow prevention part, formed in the upper and lower case members, is configured to block the inflow of foreign matters. Each of the upper case member, the lower case member, and the center plate is composed of a synthetic resin material.

First claim

What is claimed is:

1. A rotation induction device for a vehicle, comprising:
an upper case member having a piston rod disposed therethrough;
a lower case member, disposed under the upper case member and having the piston rod disposed therethrough;
a center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate and configured to induce either one or both of the upper and lower case members to rotate;
an inflow prevention part, formed in the upper and lower case members, configured to block an inflow of foreign matters, and comprising a dropping inclined surface obliquely formed on an outermost side edge portion of the lower case member and overlapping a hook inclined surface formed on a prevention hook part extended downward from an edge of the upper case member; and
a lubricant storage part disposed at one or both of upper and lower surfaces of the center plate and configured to store lubricant therein,
wherein each of the upper case member, the lower case member, and the center plate comprises a synthetic resin material,
wherein the lubricant storage part comprises upper and lower storage parts on the upper and lower surfaces of the center plate, and
wherein the upper and lower storage parts each comprise a circumferential groove formed along a concentric circle and a radial groove in a radial shape, and the radial groove has a greater depth than the circumferential groove.

2. The rotation induction device of claim 1 , wherein the upper case member comprises:
an upper through-part having an upper hole formed in a center thereof such that the piston rod passes through the upper hole;
an upper cover extended outward from the upper through-part, and configured to cover an upper surface of the center plate; and
an upper protrusion protruding downward from the upper cover, and configured to restrict movement of the center plate.

3. The rotation induction device of claim 1 , wherein the lower case member comprises:
a lower through-part having a lower hole formed in a center thereof such that the piston rod passes through the lower hole;
a lower cover extended outward from the lower through-part, and configured to cover a lower surface of the center plate; and
a lower protrusion protruding upward from the lower cover, and configured to restrict movement of the center plate.

4. The rotation induction device of claim 1 , wherein the inflow prevention part comprises:
a prevention locking part formed at an edge of the lower case member, and formed as a groove to which the prevention hook part is locked and fixed; and
a prevention dropping part extended from a bottom of the lower case member, and configured to drop foreign matters, introduced into the prevention locking part, downward.

5. The rotation induction device of claim 4 , wherein the prevention hook part comprises the hook inclined surface formed thereon, and
wherein the prevention dropping part comprises the dropping inclined surface facing the hook inclined surface to correspond to the hook inclined surface.

6. The rotation induction device of claim 4 , wherein the inflow prevention part further comprises:
prevention lower protrusions protruding upward from the lower case member; and
a prevention upper protrusion protruding downward from the upper case member, inserted between the prevention lower protrusions, and configured to prevent the inflow of foreign matters.

7. The rotation induction device of claim 1 , further comprising a push prevention part formed in the upper case member to prevent a push of the upper case member.

8. The rotation induction device of claim 7 , wherein the push prevention part comprises a plurality of push prevention parts, each spaced apart from another, and protruding toward the piston rod.

9. The rotation induction device of claim 8 , wherein the push prevention parts are formed in a circumferential direction along an inner circumferential surface of the upper case member.

10. The rotation induction device of claim 8 , wherein the push prevention parts are formed in a top-to-bottom direction along an inner circumferential surface of the upper case member.

11. A rotation induction device for a vehicle, comprising:
a first synthetic resin material member having a piston rod disposed therethrough;
a second synthetic resin material member, disposed under the first synthetic resin material member and having the piston rod disposed therethrough;
a third synthetic resin material member, disposed between the first and second synthetic resin material members such that the piston rod passes through the third synthetic resin material member and configured to induce either one or both of the first and second synthetic resin material members to rotate;
an inflow prevention part, formed in the first and second synthetic resin material members, configured to block an inflow of foreign matters, and comprising a dropping inclined surface obliquely formed on an outermost side edge portion of the second synthetic resin material member and overlapping a hook inclined surface formed on a prevention hook part extended downward from an edge of the first synthetic resin material member; and
a lubricant storage part disposed at one or both of upper and lower surfaces of the third synthetic resin material member and configured to store lubricant therein,
wherein the lubricant storage part comprises upper and lower storage parts on the upper and lower surfaces of the third synthetic resin material member, and
wherein the upper and lower storage parts each comprise a circumferential groove formed along a concentric circle and a radial groove in a radial shape, and the radial groove has a greater depth than the circumferential groove.

12. The rotation induction device of claim 11 , further comprising a push prevention part formed in the first synthetic resin material member to prevent a push of the first synthetic resin material member,
wherein the first synthetic resin material member is an upper case member, the second synthetic resin material member is a lower case member, and the third synthetic resin material member is a center plate.

13. The rotation induction device of claim 11 , wherein the first synthetic resin material member comprises:
an upper through-part having an upper hole formed in a center thereof such that the piston rod passes through the upper hole;
an upper cover extended outward from the upper through-part, and configured to cover an upper surface of the third synthetic resin material member; and
an upper protrusion protruding downward from the upper cover, and configured to restrict movement of the third synthetic resin material member.

14. The rotation induction device of claim 11 , wherein the second synthetic resin material member comprises:
a lower through-part having a lower hole formed in a center thereof such that the piston rod passes through the lower hole;
a lower cover extended outward from the lower through-part, and configured to cover a lower surface of the third synthetic resin material member; and
a lower protrusion protruding upward from the lower cover, and configured to restrict movement of the third synthetic resin material member.

15. The rotation induction device of claim 11 , wherein the inflow prevention part comprises:
a prevention locking part formed at an edge of the second synthetic resin material member, and formed as a groove to which the prevention hook part is locked and fixed; and
a prevention dropping part extended from a bottom of the second synthetic resin material member, and configured to drop fore

Assignees

• Hyundai Mobis Co Ltd
• Iljin Co Ltd

Inventors

• Choi Byung Joon
• Kang Jun Mo
• Kim Byung Hwan
• Hong Tae Ho

Classifications

• F16C33/74

  of sliding-contact bearings · CPC title

• F16C33/20

  Sliding surface consisting mainly of plastics (F16C33/22 - F16C33/28 take precedence) · CPC title

• B60G2204/128

  Damper mount on vehicle body or chassis · CPC title

• B60G2204/418

  Bearings, e.g. ball or roller bearings · CPC title

• F16C33/102 Primary

  with grease as lubricant · CPC title