Over-molded compression limiter
View Patent ↗A compression limiter includes a tubular-shaped wall having an outer surface and an inner surface forming a central passage. A plurality of perforations extend through the wall from the outer surface to the inner surface. A plastic component can be formed with the compression limiter by over-molding a plastic body over the compression coupler and extending the plastic body into the plurality of perforations. The compression limiter is thereby firmly secured to the plastic body. Different sized fastener openings can be formed within the compression limiter by extending the plastic body into the central passage of the compression limiter and/or substantially preventing the plastic body from extending into the central passage of the compression limiter.
1. A plastic component comprising, in combination:
a compression limiter including a tubular-shaped wall having an outer surface and an inner surface forming a central passage;
wherein the compression limiter includes a plurality of perforations extending through the wall from the outer surface to the inner surface;
a plastic body molded over the compression coupler and extending into the plurality of perforations;
wherein the plastic body extends within the central passage of the compression limiter to form a hole smaller than the inner surface of the compression limiter;
a second compression limiter including a tubular-shaped wall having an outer surface and an inner surface forming a central passage;
wherein the second compression limiter includes a plurality of perforations extending through the wall from the outer surface to the inner surface; and
wherein the plastic body does not substantially extend within the central passage of the second compression limiter.
2. The plastic component according to claim 1 , wherein the wall is cylindrically shaped.
3. The plastic component according to claim 1 , wherein the plurality of perforations are in a plurality of longitudinally spaced-apart rows.
4. The plastic component according to claim 3 , wherein adjacent rows of the perforations are circumferentially offset.
5. The plastic component according to claim 1 , wherein the perforations are circular.
6. The plastic component according to claim 1 , wherein the wall comprises high carbon steel.
7. A method of forming a plastic component comprising the steps of, in combination:
providing a compression limiter including a tubular-shaped wall having an outer surface and an inner surface forming a central passage;
wherein the compression limiter includes a plurality of perforations extending through the wall from the outer surface to the inner surface;
over-molding a plastic body over the compression coupler so that the plastic body extends into the plurality of perforations;
extending the plastic body within the central passage of the compression limiter to form a hole within the compression limiter smaller than the inner surface of the compression limiter;
providing a second compression limiter including a tubular-shaped wall having an outer surface and an inner surface forming a central passage;
wherein the second compression limiter includes a plurality of perforations extending through the wall from the outer surface to the inner surface; and
preventing the plastic body from substantially extending within the central passage of the second compression limiter.
8. The method according to claim 7 , further comprising the steps of extending different sized molding tool pins into the first and second compression limiters during the step of over-molding the plastic body.