Deformation motion mechanism

Patent metadata

Field	Value
Publication number	US-10100907-B2
Application number	US-201615089866-A
Country	US
Kind code	B2
Filing date	Apr 4, 2016
Priority date	Apr 4, 2016
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A novel deformation motion mechanism with precise motion precise motion and structural robustness is achieved. A deformation motion mechanism includes: an elastic ring member shaped symmetrically with respect to a center line, wherein one end of the elastic ring member is fixed and the other end is movable along the center line; a drive unit which is placed within the elastic ring member and is arranged to rotate a feed screw engaged with both ends of the elastic ring member along an operating line orthogonal to the center line, to press or stretch the elastic ring member along the center line; and a plurality of flexible arms which connects the drive unit to the elastic member in at least a direction of the center line.

First claim

The invention claimed is:

1. A deformation motion mechanism comprising:
an elastic ring member shaped symmetrically with respect to a center line, wherein one end of the elastic ring member is fixed and the other end is movable along the center line;
a drive unit which is placed within the elastic ring member and is arranged to rotate a feed screw engaged with both ends of the elastic ring member along an operating line orthogonal to the center line, to press or stretch the elastic ring member along the center line; and
a plurality of flexible arms which connects the drive unit to the elastic member in at least a direction of the center line.

2. The deformation motion mechanism according to claim 1 , wherein the plurality of flexible arms are arranged symmetrically about a point at which the center line and the operating line intersect.

3. The deformation motion mechanism according to claim 1 , wherein each of the plurality of flexible arms is flexible in the direction of the center line but rigid in a direction orthogonal to a ring plane of the elastic ring member.

4. The deformation motion mechanism according to claim 1 , wherein each of the plurality of flexible arms is formed from an elastic plate of a predetermined width, wherein the flexible arm is installed such that a width direction of the elastic plate is the same as a direction orthogonal to a ring plane of the elastic ring member.

5. A deformation motion method comprising:
preparing an elastic ring member shaped symmetrically with respect to a center line, wherein one end of the elastic ring member is fixed and the other end is movable along the center line wherein a drive unit is placed within the elastic ring member and is arranged to rotate a feed screw engaged with both ends of the elastic member along an operating line orthogonal to the center line;
connecting the drive unit to the elastic ring member through a plurality of flexible arms in at least a direction of the center line; and
by the drive unit, rotating the feed screw to press or stretch the elastic ring member along the operating line.

6. The deformation motion method according to claim 5 , wherein the plurality of flexible arms are arranged symmetrically about a point at which the center line and the operating line intersect.

7. The deformation motion method according to claim 5 , wherein each of the plurality of flexible arms is flexible in the direction of the center line but rigid in a direction orthogonal to a ring plane of the elastic ring member.

8. The deformation motion method according to claim 5 , wherein each of the plurality of flexible arms is formed from an elastic plate of a predetermined width, wherein the flexible arm is installed such that a width direction of the elastic plate is the same as a direction orthogonal to a ring plane of the elastic ring member.

Assignees

• Nec Corp

Inventors

• Kurose Minoru
• Katsuyama Yoshihiko
• Hamada Kazuo
• Kobayashi Takuro
• TANIMICHI Naoto
• Happy Tsui

Classifications

• F16H19/001

  for conveying reciprocating or limited rotary motion · CPC title

• B25J7/00

  Micromanipulators {(specimen supports for investigating or analysing materials G01N23/2204; associated with microscopes G02B21/32; means for supporting or positioning the objects or the material in discharge tubes H01J37/20)} · CPC title

• F16H25/20 Primary

  Screw mechanisms (with automatic reversal F16H25/12) · CPC title

• F16H2025/2059

  Common movement by two screws or two nuts, e.g. two connected screws with opposite thread direction · CPC title

• F16H37/122 Primary

  for interconverting rotary motion and oscillating motion · CPC title