Composite article with highly filled plastic component
First Claim
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1. A plastic bonded permanent magnet which comprises:
- a filled plastic component defining a first axial face, wherein said filled plastic component is comprised of a plastic matrix, and permanent magnetic particles as a filler embedded within the plastic matrix in an amount sufficient to render the filled plastic component permanently magnetic;
a basic body defining a second axial face which is opposed to said first axial face of said filled plastic component; and
an intermediary component formed of an elastic material which is sandwiched between and indirectly connects said opposed respective first and second axial faces of said filled plastic component and said basic body one to another, whereinsaid intermediary component comprises plural projections extending outwardly therefrom toward said respective first axial face of said filled plastic component, and whereinsaid filled plastic component includes plural recesses formed in said respective first axial face thereof which oppose said plural projections of said intermediary component, and whereineach of said projections of said intermediary component is received within an opposed respective one of said recesses of said filled plastic component so as to connect indirectly said opposed respective first and second axial faces of said filled plastic component and basic body one to another by means of frictional and/or positive connection.
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Abstract
Composite articles having a highly filled plastic component connected to a basic body are provided which avoid the occurrence of cracks in the plastic component under changing thermal conditions. More specifically, the plastic component is not fixed directly to the basic body but instead is fixed indirectly thereto via at least one intermediary component made of an elastic material. Preferably, the intermediary component is embedded by a frictional and/or positive connection with at least one projection in a groove or opening (28) of the plastic component.
13 Citations
21 Claims
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1. A plastic bonded permanent magnet which comprises:
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a filled plastic component defining a first axial face, wherein said filled plastic component is comprised of a plastic matrix, and permanent magnetic particles as a filler embedded within the plastic matrix in an amount sufficient to render the filled plastic component permanently magnetic; a basic body defining a second axial face which is opposed to said first axial face of said filled plastic component; and an intermediary component formed of an elastic material which is sandwiched between and indirectly connects said opposed respective first and second axial faces of said filled plastic component and said basic body one to another, wherein said intermediary component comprises plural projections extending outwardly therefrom toward said respective first axial face of said filled plastic component, and wherein said filled plastic component includes plural recesses formed in said respective first axial face thereof which oppose said plural projections of said intermediary component, and wherein each of said projections of said intermediary component is received within an opposed respective one of said recesses of said filled plastic component so as to connect indirectly said opposed respective first and second axial faces of said filled plastic component and basic body one to another by means of frictional and/or positive connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A composite permanent magnetic article comprising:
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a filled plastic component having permanent magnetic particles as a filler material embedded within a plastic matrix; a basic body; and an intermediary component formed of an elastic material which is positioned coaxially between, and indirectly connects, opposed axial faces of said filled plastic component and said basic body, wherein one side of said intermediary component is connected to said respective axial face of said basic body, and wherein another side of said intermediary component is connected to said respective axial face of said filled plastic component by means of plural projections formed on said another side of said intermediary component and plural recesses formed in said respective axial face of said filled plastic component in opposition to respective ones of said plural projections, wherein said each of said plural recesses receives an opposed respective one of said plural projections so as to connect said intermediary component thereto. - View Dependent Claims (18, 19, 20, 21)
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Specification