ACTUATOR

• US 20190316660A1
• Filed: 06/26/2019
• Published: 10/17/2019
• Est. Priority Date: 11/21/2014
• Status: Active Grant

• Current Assignee: HS Wroclaw Sp. z.o.o. (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: HS Wroclaw Sp. z.o.o. (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Trybula, Daniel
• Granted Patent: US 11,187,308 B2
• Time in Patent Office: Days
• CPC Class Codes: B64C 13/32 using cam mechanisms
• CPC Class Codes: F16C 2326/43 Aeroplanes; Helicopters in general B64C
• CPC Class Codes: F16C 29/068 with the bearing body fully encircling the guide rail or track
• CPC Class Codes: F16C 29/0692 the bearing body encircles a guide rail or track of non-circular cross-section, e.g. with grooves or protrusions, i.e. the linear bearing is suited to transmit torque telescopic shafts with built-in bearings F16C3/035; yielding coupling allowing axial displacement by rolling elements F16D3/065
• CPC Class Codes: F16H 2025/2028 using screw profiles with high efficiency for converting reciprocating motion into oscillating movement
• CPC Class Codes: F16H 2025/2075 Coaxial drive motors
• CPC Class Codes: F16H 25/186 with reciprocation along the axis of oscillation
• CPC Class Codes: F16H 25/20 Screw mechanisms with automatic reversal F16H25/12
• CPC Class Codes: F16H 25/2214 with elements for guiding the circulating balls
• CPC Class Codes: F16H 25/2247 with rollers

Abstract

An actuator for driving a rotatable component includes a first, rotating member comprising a screw and a second member comprising a nut threaded to said screw, wherein rotation of said first member causes axial movement of said first or second member. The component also includes a third member coupled to the second member, wherein axial movement of said first or second member causes axial movement of said third member and a fourth, rotating member coupled to said third member and connectable to said component. The system also includes a bearing system located between said third member and said fourth member, said bearing system configured to cause said fourth member to rotate upon said axial movement of said third member so as to drive said component.

Claims

1. A bearing system comprising:

a first component axially moveable along a first axis;

a second component rotatable about a second axis, wherein said first component is restricted against rotational movement and said second component is restricted against axial movement;

wherein said first component comprises a first helical rail, and said second component comprises a second helical rail that opposes said first helical rail; and

one or more roller bearings located between said first helical rail and said second helical rail, wherein upon axial movement of said first component, said first helical rail is urged towards said second helical rail such that a force is applied through said roller bearings to said second component so as to rotate said second component about said second axis.

2. A bearing system as claimed in claim 1, wherein said first and second helical rails are parallel with one another.