High-grade plastic component

• US 6,259,343 B1
• Filed: 08/02/1999
• Issued: 07/10/2001
• Est. Priority Date: 08/12/1998
• Status: Expired due to Term

• Current Assignee: Max Baermann GmbH
• Original Assignee: Max Baermann GmbH
• Inventors: Schwarz, Manfred
• Primary Examiner(s): DONOVAN, LINCOLN D
• Application Number:
  US09/366,043
• Time in Patent Office: 708 Days
• Field of Search: 335/302-306
• US Class Current: 335/302
• CPC Class Codes: H01F 7/0215 Flexible forms, sheets
• CPC Class Codes: H02K 1/2733 Annular magnets

Abstract

With a high-grade plastic component, e.g. a plastic-bonded permanent magnet (1; 2), which is fixed to a basic body (4; 5), the basic body (4; 5) shows at least one strap-shaped part (7; 8) for the purpose of fixing it to the plastic component. In order to avoid the plastic component (1; 2) tearing off the basic body (4; 5), the strap-shaped part (7; 8) is surrounded with the high-grade plastic during manufacture of the plastic component and is arranged in the high-grade plastic in such a way that it can take up contraction strains of the high-grade plastic after manufacture of the plastic component at least partly by bending.

Claims

1. High-grade plastic product comprising:

a high-grade plastic component formed of a plastic material and having a particulate material embedded in said plastic material;

a basic body having a positive connection to said high-grade plastic component and including at least one strap-shaped part embedded in said plastic material, wherein

said plastic material contracts physically when changing from a fluid state to a solid state, and wherein

the positive connection between said basic body and said high-grade plastic component includes said solid plastic material exerting a contracting strain on said at least one strap-shaped part by virtue of said at least one strap-shaped part being embedded in said plastic material while in said fluid state thereof.

2. High-grade plastic product according to claim 1, wherein

said high-grade plastic component is in the shape of a ring or disc, and

the basic body has a longitudinal axis and comprises (i) a bush-shaped part, and (ii) a flange part extending laterally of the bush-shaped part, and

said at least one strap-shaped part is arranged at the flange part and is inclined towards the longitudinal axis of the basic body.

3. High-grade plastic product according to claim 2, comprising a plurality of said strap-shaped parts distributed along a circumference of the flange part.

4. High-grade plastic product according to claim 3, wherein

the flange part is in adjoining relationship to the bush-shaped part;

the flange part includes a ring which is oriented generally radially with respect to the longitudinal axis of the basic body,

the ring being provided with openings each having inside and outside radial edges,

the strap-shaped parts being arranged at the inside and outside radial edges of said openings, and

the opening being filled with the plastic material containing the particulate material embedded therein.

5. High-grade plastic product according to claim 3, wherein

the flange part is in adjoining relationship to the bush-shaped part;

the flange part includes a ring which is oriented generally radially with respect to the longitudinal axis of the basic body, and

the strap-shaped parts are distributed along the circumference of the flange part.

6. High-grade plastic product according to claim 4, wherein

the high-grade plastic component is located at a front portion of the ring of the flange part, and

the strap-shaped part project from the flange part and are inclined towards the longitudinal axis of the basic body.

7. High-grade plastic product according to claim 1, wherein the basic body is made of metal.

8. High-grade plastic product according to claim 1, wherein the basic body is made of plastic.

9. High-grade plastic product according to claim 1, wherein the high-grade plastic component is a plastic-filled permanent magnet.

10. High-grade plastic product according to claim 1, wherein the high-grade plastic component is a plastic-bonded magnet.