Fiber-reinforced laminate, shutter device and camera

Patent metadata

Field	Value
Publication number	US-9588401-B2
Application number	US-201414565751-A
Country	US
Kind code	B2
Filing date	Dec 10, 2014
Priority date	Jan 8, 2014
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

There is provided with a fiber-reinforced laminate. The fiber-reinforced laminate has a first fiber-reinforced layer and a second fiber-reinforced layer. The fiber-reinforced laminate also has a metal layer provided between the first fiber-reinforced layer and the second fiber-reinforced layer.

First claim

What is claimed is:

1. A fiber-reinforced laminate comprising:
a first fiber-reinforced layer;
a second fiber-reinforced layer; and
a metal layer provided between the first fiber-reinforced layer and the second fiber-reinforced layer,
wherein connecting layers are interposed between the metal layer and the first fiber-reinforced layer, and between the metal layer and the second fiber-reinforced layer,
wherein the connecting layers are provided between the metal layer and fibers contained in the first fiber-reinforced layer, and between the metal layer and fibers contained in the second fiber-reinforced layer, and contain a resin composition layer that is formed by the same components as a resin composition holding the fibers of the first fiber-reinforced layer or the second fiber-reinforced layer, and is formed integrally with the resin composition holding the fibers of the first fiber-reinforced layer or the second fiber-reinforced layer,
wherein the metal layer has a surface layer provided with a surface treated layer having a plurality of micro recesses constituting a part of the connecting layers, and
wherein at least a part of the resin composition layer is embedded in the micro recesses of the surface treated layer.

2. The fiber-reinforced laminate according to claim 1 , wherein the metal layer is made of a seamless metal sheet.

3. The fiber-reinforced laminate according to claim 1 , wherein the metal layer is a base substrate that functions substantially as a core material of the first and second fiber-reinforced layers, and the first and second fiber-reinforced layers are reinforcement layers which enhance surface strength of the metal layer made of the base substrate.

4. The fiber-reinforced laminate according to claim 1 , wherein an oxidized surface of the surface treated layer obtained by anodizing a surface of the metal layer forms an interface with the resin composition layer.

5. The fiber-reinforced laminate according to claim 1 , wherein:
the first fiber-reinforced layer and the second fiber-reinforced layer are provided to have substantially the same thickness;
the first fiber-reinforced layer or the second fiber-reinforced layer is provided to have a thickness greater than or equal to a thickness of the metal layer; and
a total thickness of the first fiber-reinforced layer and the second fiber-reinforced layer is greater than the thickness of the metal layer.

6. The fiber-reinforced laminate according to claim 1 , wherein the first fiber-reinforced layer has substantially the same fiber direction as a fiber direction of the second fiber-reinforced layer.

7. The fiber-reinforced laminate according to claim 1 , wherein:
the fiber-reinforced laminate is a strip-shaped thin plate; and
the first and second fiber-reinforced layers are connected to the metal layer with a fiber direction of the first fiber-reinforced layer and a fiber direction of second fiber-reinforced layer being inclined from a longitudinal direction of the strip-shaped thin plate.

8. The fiber-reinforced laminate according to claim 7 , wherein the fiber direction of the first fiber-reinforced layer and the fiber direction of the second fiber-reinforced layer intersect each other in plan view in a thickness direction of the strip-shaped thin plate.

9. The fiber-reinforced laminate according to claim 1 , wherein:
the metal layer is a layer made of aluminum alloy or magnesium alloy; and
the first fiber-reinforced layer and the second fiber-reinforced layer are carbon fiber-reinforced resin layers.

10. The fiber-reinforced laminate according to claim 1 , wherein:
the metal layer is composed of a rolled material;
fiber directions of the first fiber-reinforced layer and the second fiber-reinforced layer are aligned in one direction; and
the fiber directions of the first fiber-reinforced layer and the second fiber-reinforced layer intersect or are orthogonal to a rolling direction of the metal layer.

11. The fiber-reinforced laminate according to claim 1 , wherein a volume fraction (Vf) of fibers in at least one of the first fiber-reinforced layer and the second fiber-reinforced layer is at least 0.50.

12. The fiber-reinforced laminate according to claim 1 ,
wherein at least one of the first fiber-reinforced layer and the second fiber-reinforced layer has a friction reduction layer on its surface,
wherein the friction reduction layer has on its surface a plurality of first projections and a plurality of second projections, and
wherein the second projections have a height less than that of the first projections.

13. A fiber-reinforced laminate comprising:
a first fiber-reinforced layer,
a second fiber-reinforced layer,
a metal layer provided between the first fiber-reinforced layer and the second fiber-reinforced layer; and
connecting layers which bond the first and second fiber-reinforced layers and the metal layer,
wherein the connecting layers contain the same components as a resin composition which holds fibers in the first and second fiber-reinforced layers,
wherein the metal layer has a surface layer provided with a surface treated layer having a plurality of micro recesses constituting a part of the connecting layers;
wherein the surface treated layer is a blackened layer;
wherein the surface treated layer is further provided on an end face of the metal layer; and
wherein the surface treated layer is a layer formed by subjecting a surface of the metal layer to anodization or chemical conversion.

14. A The fiber-reinforced laminate comprising:
a first fiber-reinforced layer;
a second fiber-reinforced layer; and
a metal layer provided between the first fiber-reinforced layer and the second fiber-reinforced layer,
wherein at least one of the first fiber-reinforced layer and the second fiber-reinforced layer has a reflection reduction layer on its surface; and
wherein the reflection reduction layer has a center line average roughness (Ra) of at least 10 μm as measured along a surface of a fiber contained in the first or second fiber-reinforced layer.

15. A shutter device comprising:
a base plate having an opening;
one or more shutter blades configured to open and close the opening, a longitudinal direction of the shutter blade being substantially orthogonal to its moving direction; and
a driving unit configured to drive the shutter blade,
wherein at least one of the one or more shutter blades is the fiber-reinforced laminate according to claim 1 .

16. A camera comprising a shutter device, wherein the shutter device comprises:
a base plate having an opening;
one or more shutter blades configured to open and close the opening, a longitudinal direction of the shutter blade being substantially orthogonal to its moving direction; and
a driving unit configured to drive the shutter blade,
wherein at least one of the one or more shutter blades is the fiber-reinforced laminate according to claim 1 .

Assignees

• Canon Denshi Kk

Inventors

• Matsuda Kana
• Hashizume Michiyo
• Saito Yuki
• Igawa Mizuho
• Yoshikawa Munetoshi
• Yanagi Michio
• Zhou Yaomin

Classifications

• B32B2250/03

  3 layers · CPC title

• G03B9/40 Primary

  Double plate · CPC title

• G03B9/08

  Shutters · CPC title

• G03B9/18

  More than two members · CPC title

• Y10T428/24612

  Composite web or sheet · CPC title