2-Dimensional displacement device

• US 20060214516A1
• Filed: 07/27/2004
• Published: 09/28/2006
• Est. Priority Date: 08/01/2003
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Jansen, Gerardus Lucien Mathildus
• Application Number:
  US10/566,508
• Publication Number:
  US 20060214516A1
• Time in Patent Office: Days
• US Class Current: 310/12.50
• CPC Class Codes: H02K 2201/18 Machines moving with multiple degrees of freedom
• CPC Class Codes: H02K 41/03 Synchronous motors; Motors moving step by step; Reluctance motors H02K41/035 takes precedence

Abstract

The invention relates to a displacement device (1, 31) provided with a first part (3, 33) with a primary coil (4, 34) and a second part (9, 39) with a secondary coil (10, 40), whereby the secondary coil (10, 40) can be moved in relation to the primary coil (4, 34) and is electrically connected to driving circuit. Once of the coils (4, 34) is an elongated coil, which extends in a travel direction, while the other coil (10, 40) can be moved in relation to the first coil (4, 34) in the travel direction.

Claims

1. A displacement device (1, 31) provided with a first part (3, 33) with a primary coil (4, 34) and a second part which can be moved in relation to the first part (9, 39), the second part (9, 39) being provided with a secondary coil (10, 40) which can be moved in relation to the primary coil (4, 34) and which is electrically connected to an electrically driven element, characterized in that at least one of the coils (4, 34, 10, 40) is an elongated coil which extends in a travel direction, in that the other coil (4, 34, 10, 40) can be moved in the travel direction in relation to the first coil (4, 34, 10, 40).

2. A displacement device (1, 31) according to claim 1, characterized in that the primary coil (4, 34) is the elongated coil and in that the secondary coil (10, 40) is located inside the primary coil (4, 34).

3. A displacement device (1, 31) according to claim 1 or 2, characterized in that a core (11, 41) extends through the coils (4, 34, 10, 40) transversely to the travel direction.

4. A displacement device (1, 31) according to claim 3, characterized in that the core is provided with three parallel legs (11, 14, 15;

41, 44, 45) and two bridge sections (12, 13;

42, 43) connecting the extremities of the legs.

5. A displacement device (1, 31) according to claim 4, characterized in that a middle leg (11, 41) extends through the two coils while the adjacent legs (14, 15;

44, 45) and the bridge sections (12, 13;

42, 43) are located around the two coils (4, 10;

34, 40).

6. A displacement device (1, 31) according to one of the preceding claims, characterized in that the secondary coil (10, 40) can be moved farther in relation to the primary coil (4, 34) in at least a direction that extends transversely to the travel direction.