Timing disc fixing

• US 20050141664A1
• Filed: 12/01/2004
• Published: 06/30/2005
• Est. Priority Date: 12/02/2003
• Status: Active Grant

• Current Assignee: PWB-Ruhlatec Industrieprodukte GmbH
• Original Assignee: PWB-Ruhlatec Industrieprodukte GmbH
• Inventors: Braun, Richard
• Granted Patent: US 7,026,734 B2
• Time in Patent Office: Days
• US Class Current: 377/17
• CPC Class Codes: G01D 5/34707 Scales; Discs, e.g. fixation, fabrication, compensation

Abstract

The invention relates to a timing disc fitting for an encoder system. It consists of a timing disc hub (1) which can be plugged to a motor shaft (2) and to which there is fixed a timing disc (3). In accordance with the invention, the timing disc hub consists of a metallic heat-conducting material to which, on one side, a plastic insulating material is adhered. In the flange plane (1a) of the timing disc hub (1) there are arranged projections or lugs (5, 6, 7) which engage correspondingly shaped indentations, recesses or cut-outs (3a, 3b) in the timing disc (3).

Claims

1. A timing disc fitting for an encoder system, comprising a timing disc hub (1) which can be plugged to a motor shaft (2) and timing disc (3) fixed to said hub and including a plurality of recesses (3a, 3b), said timing hub comprising a metallic heat conducting material and a plastic insulating material (4) adhered to one side of said timing disc, said timing disc hub including projections (5, 6, 7) which engage correspondingly recesses (3a, 3b) in the timing disc (3).

2. A timing disc fitting according to claim 1, wherein in that the plastic insulating material (4) is arranged on the side (1b) of the timing disc hub (1) which faces the timing disc (3).

3. A timing disc fitting according to claim 1, the plastic insulating material is a film, a foil or a paint.

4. A timing disc fitting according to claim 3, wherein the plastic insulating material is self-adhesive.

5. A timing disc fitting according to claim 1, wherein the projections (5, 6, 7) are in the form of hooks, knobs, lugs or bent metal strips.