JIG USED FOR MANUFACTURING COMPOSITE MATERIAL STRUCTURE HAVING THICKENED WALL PORTION IN TRANSVERSE CROSS-SECTION
First Claim
1. A jig used for manufacturing a composite material structure, the jig being inserted into a channel portion of a hat stringer and used, when the composite material structure is manufactured by attaching prepreg to a frame structure including the hat stringer as a frame member, the channel portion extending in a lengthwise direction of the hat stringer;
- the jig comprising;
a body having a pipe shape and made of an elastic material, the body having a trapezoidal shape in which a transverse cross-section perpendicular to a lengthwise direction of the body has an upper base and a lower base longer than the upper base;
wherein an interior of the body is tightly sealed, and the body has on one end portion thereof, a pressurization hole for pressurizing the interior of the body to inflate the body; and
the body has thickened edge portions in which both base angle portions of at least the lower base are greater in thickness than another wall portions, among four corner portions in the transverse cross-section of the trapezoidal shape.
1 Assignment
0 Petitions
Accused Products
Abstract
A bladder-type jig used for manufacturing a stiffened panel structure using a hat stringer has the advantage that deformation of prepreg can be suppressed effectively, and durability of the jig can be improved so that repeated use of the jig is achieved. A body of the bladder includes a pipe-shaped portion and a coating film covering the outer peripheral surface of the pipe-shaped portion. The pipe-shaped portion is a main body portion of the body, and is made of a silicone rubber composition material such that its transverse cross-section has a trapezoidal pipe shape. Both side edge portions of an exposed wall portion corresponding to a lower base of the transverse cross-section are thickened edge portions which are greater in thickness than another wall portions. The thickened edge portions support the exposed wall portion from inward of the body, and can suppress the exposed wall portion from getting deformed inwardly.
40 Citations
8 Claims
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1. A jig used for manufacturing a composite material structure, the jig being inserted into a channel portion of a hat stringer and used, when the composite material structure is manufactured by attaching prepreg to a frame structure including the hat stringer as a frame member, the channel portion extending in a lengthwise direction of the hat stringer;
- the jig comprising;
a body having a pipe shape and made of an elastic material, the body having a trapezoidal shape in which a transverse cross-section perpendicular to a lengthwise direction of the body has an upper base and a lower base longer than the upper base; wherein an interior of the body is tightly sealed, and the body has on one end portion thereof, a pressurization hole for pressurizing the interior of the body to inflate the body; and the body has thickened edge portions in which both base angle portions of at least the lower base are greater in thickness than another wall portions, among four corner portions in the transverse cross-section of the trapezoidal shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- the jig comprising;
Specification