JPS62250245A - Crossing tubular fiber structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cross-tubular fiber structure, and relates to a spacecraft,
It is used to strengthen resin molded products for aircraft, automobiles, railway vehicles, ships, machinery, buildings, and other structural materials.

(Prior art) The above-mentioned resin molded products for structural materials include metal fibers, carbon fibers, graphite fibers, and glass! [1] A matrix of epoxy resin, phenol resin, etc. is added to a fiber structure made of high-performance mi with excellent heat resistance, strength, and elasticity, such as silicon carbide fiber, alumina fiber, polyester fiber, aliphatic or aromatic polyamide fiber. The material used is impregnated with resin, molded into a desired shape, and cured. When the above resin molded product is pipe-shaped, the fiber structure is also formed into a vibrator shape, but as such a pipe-shaped fiber structure, a large number of fiber structures arranged parallel to the length direction are formed. It is known to consist of a real warp thread and a weft thread which is passed in a meandering manner between the warp threads in a plane perpendicular to the warp threads (Japanese Patent Application Laid-Open No. 1941-1983).
(See Japanese Patent Application Laid-open No. 58-163749 and Japanese Patent Application Laid-Open No. 58-220847). And a cross, 1
When cross-shaped pipes such as L-shaped or L-shaped pipes are required, conventionally, straight fibrous structures as described above have been joined by bonding, suturing, or other means.

(Problem to be solved by the invention) When straight tubular fiber structures are joined to form a cross-tube shape, the reinforcing threads are not connected at the joined part, so the strength of this part is lower than that of other parts. However, there was a problem that breakage easily occurred from this part and the strength as a resin molded product decreased.

This invention provides an integrated cross-tubular fiber structure in which threads are arranged in both the axial direction and the circumferential direction of a tubular part, and the density of the arrangement is almost uniform, and the threads are connected seamlessly at each part. It provides:

(Means for Solving the Problems) The fabric is formed into a cross-tube shape in which at least two tubes each consisting of a large number of warp yarns and weft yarns arranged substantially orthogonally are crossed in a cross shape, a T-shape, a square shape, etc. The weft threads meander between the warp threads in the warp-wise tubular part, the weft-direction tubular part, and the intersections thereof, and the adjacent weft threads are laminated with alternating directions so as to intersect with each other, In the tubular part in the warp direction, the above-mentioned weft threads run in the circumferential direction and connect all the warp threads in a tubular shape, and in the tubular part in the weft direction and the above-mentioned intersection, the above-mentioned weft threads run across the entire width and connect all the warp threads therebetween. The warp threads are tied in the weft direction, and in the tubular part in the weft direction, the warp yarns run in the circumferential direction to tie all the weft threads in a tubular shape, and in the tubular part in the warp direction and the above-mentioned intersection, the warp yarns are tied over the entire length thereof. is passed through and ties all the weft threads between them in the warp direction. In addition, as in the case of the warp and weft mentioned above, single yarn made of high-density fiber, O
- Preference is given to using pings, drawn threads and twisted threads, singly or in combination.

(Function) An outer shape similar to that obtained by cutting a flat woven fabric into shapes such as a cross, a single letter, and an L-shape and stitching a plurality of pieces together at their edges is obtained. That is, each of the tubular portions in the warp and weft directions and their intersections are formed in a weave of intersecting warp and weft yarns. and the warp yarns of the tubular portion in the warp direction and the weft yarns of the tubular portion in the weft direction each extend to the intersection portion to form the intersection portion in the same texture as the tubular portion,
There is no seam at this intersection. However, the stitching of the edges is performed using the warp and weft threads forming the tubular portions and intersections in the warp and weft directions, and no seams occur in the portions corresponding to the edges.

(Example) FIG. 1 shows two cross-shaped fabrics 1 on the front and back sides shown in FIG.
It represents the second organization. In FIG. 2, the front fabric 1 is
It consists of a center part 1a, a top piece 1b, a top piece 1C1, a left protrusion piece 1d, and a right protrusion piece 1e. Similarly, the back fabric 2 also includes a center part 2a, a top piece 2b, a top piece 2C1, a left protrusion piece 2d, and It is formed by a right protruding piece 2e. Then, both left and right edges of the upper pieces 1b and 2b and both left and right edges of the lower protruding piece 1C12C are connected to the weft thread 4.
The upper and lower edges of the left protruding pieces 1d and 2d and the upper and lower edges of the right protruding pieces 1e and 2e are respectively tied with warp threads 3, the upper ends of the upper protruding pieces 1b and 2b, and the lower ends of the lower protruding pieces 1C and 12C. , the left ends of the left protruding pieces 1d and 2d (7) and the right ends of the right protruding pieces 1e and 2e are not connected, respectively, and the open ends 5b and 5C1
5d and 5e are formed. The protrusions 1b and 2b on the front and back sides,
Figure 3 shows the expanded and inflated state of the 8 overlapping parts of 1c and 2c, 1d and 2d, and 1e and 2e. The upper tubular part 6b in the vertical direction, the lower protruding pieces 1c and 2c the upper tubular part 6C in the vertical direction, the left protruding pieces 1d and 2d the left tubular part 6d in the horizontal direction, and the right protruding piece 1e. 2e constitutes a right tubular portion 6e in the horizontal direction.

The weft thread 4.
As shown in FIG. 1, the warp yarns 3 are wound in a helical manner astride the front and back protrusions while meandering in a zigzag pattern, thereby binding the front and back fabrics 1.2. Moreover, the two weft threads 4.4 are alternately laminated with their directions changed so as to intersect. In addition, the horizontal tubular portions, that is, the left and right protrusions, 2d, 1e, 2e, and the intersection portions 1a, 2a.
In this case, the weft threads 4.4 are arranged in a meandering manner across the entire width of each of the front and back fabrics 1.2, and the adjacent weft threads 4.4 are arranged in a meandering manner.
4 are laminated in alternating directions so that they intersect.

On the other hand, in the horizontal tubular parts 6d, 6e, that is, the left and right protrusions 1d, 2d, 1e, 2e, the warp threads 3 passed upward through the front protrusion 1d are passed downward through the back protrusion 2d, and as follows. This is repeated so that the warp threads 3 are passed through in a spiral shape, and the warp threads 3 connect the protrusions 1d, 2d, Ie, and 2e on the front, back, left, and right sides. In addition, the vertical tubular portions 6b, 6C and the intersection portions 6a, that is, the upper and lower protrusions 1b, 2b, 1c, 2c
In the central parts 1a and 2a, the warp threads 3 are passed upwards so as to pass through them, then folded and threaded downwards, and then this is repeated to pass them in a zigzag pattern on the front side, and then in a zigzag pattern on the back side. passed in the form.

Note that the warp threads 3 are bent, aligned, and passed through the tubular parts 6b, 6c and the intersection part 6a in the warp direction, and the looped folded ends of the warp threads 3 are made to protrude from the end surfaces of the tubular parts 6b, 6c. The folded loops may be connected by passing thread through the folded ends of the loops.

The embodiment of FIGS. 4-6 shows a T-shaped intersecting tubular fiber structure. In FIG. 5, the front fabric 1 and the back fabric 2 have central portions 1a and 2a, and upper protruding pieces 1b and 2, respectively.
b, consists of a lower protruding piece 1C12c and left protruding pieces 1d and 2d, and as shown in Fig. 4, the right edges of the central parts 1a and 2a are
The weft threads 4 laminated on the front side are folded back to the back side, and the weft threads 4 stacked on the back side are folded back to the front side, so that the weft threads 4a are connected, and the rest is the same as the embodiment shown in FIGS. 1 to 3. The same is true. FIG. 6 shows the swollen state of this double-woven fabric. That is, the center parts 1a and 2a of the front and back sides connect the intersection part 6a, the upper protruding pieces 1b and 2b connect the upper tubular part 6b in the vertical direction, and the lower protruding pieces IC and 2c connect the upper tubular part 6C in the vertical direction. The left projecting pieces 1d and 2d each form a left tubular portion 6d in the horizontal direction. In addition, 3 is the warp thread,
5b, sc, and 5d are open ends.

The embodiments of FIGS. 7-9 show an inverted cross-tubular fibrous structure. In FIG. 8, front fabric 1 and ! a
ll object 2 has central parts 1a, 2a, and lower protruding piece 1C, respectively.
12C and left projecting pieces 1d and 2d, and as shown in Fig. 7, the right edges of the central parts 1a and 2a are tied with a weft thread 4 as in the example shown in Fig. 4, and the upper edge thereof is connected to the front side. By folding the warp threads 3 passed through the back side to the back side and folding the warp threads 3 passed through the back side to the front side, the warp threads 3a are bound together. FIG. 9 shows the swollen state of this double-woven fabric. That is, the front and back central parts 1a, 2
a forms an intersection 6a, lower projecting pieces 1C and 2C form an upper tubular part 6c in the vertical direction, and left projecting pieces 1d and 2d form a left tubular part 6d in the horizontal direction. Note that 5C15d is an open end.

In each of the above embodiments, the weft threads 4 spanning the front and back left protruding pieces 1d, 2d, central parts 1a, 2a, and right protruding pieces 1e, 2e are laminated to equal length from the upper layer to the lower layer to form a tubular part in the lateral direction. 6d, 6e are vertically oriented tubular parts (3b, Gc
The weft thread 4 is formed perpendicularly to the weft thread 4.
The lateral tubular portions 6d, 6e may be bent at the bases of the lateral tubular portions 6d, 6e to incline the lateral tubular portions 6d, 6e.

In addition, as shown in FIG. 10, left protrusions 1d and 2d on the front and back sides
, when laminating the weft yarns 4 of the center parts 1a, 2a and the right projecting pieces 1e, 2e, in the lower part A, the lamination length of the weft yarns 4 is increased in order from the bottom to the top, and in the middle part B, the lamination length is increased from the bottom to the top. By making the lengths equal and stacking another weft thread 4 separately from the beaded pieces 1b and 2b in the upper part C, the stacking length is successively shortened so that the interval between them becomes wider from the bottom to the top, Lateral tubular portion 6d.

6e (see Fig. 11) can be tilted, and in this case, the shape is more stable than when the horizontal tubular parts 6d and 6e in the embodiments of Figs. 1 to 3 are bent at their bases. do.

In FIG. 12, the beaded pieces 1b12b of the example shown in FIG. 10 are omitted, and the upper edges of the central portions 1a and 2a are connected with warp threads 3 in the same manner as in the example shown in FIG. 7. As shown in
A cross-tubular II fiber structure is obtained, which is composed of inclined horizontal tubular portions 6d and 6e and an upper longitudinal tubular portion 6C.

Further, the tubular portion in the horizontal direction can be formed in three or more directions. For example, by laminating the weft yarn 4 in a shape in which four pieces of the cross-shaped fabric 1.2 shown in FIG. 2 are bound together, as shown in FIG.
A crossed tubular FJ & fiber structure integrally equipped with r, 6g is obtained. The same applies to the case of three directions. In these cases, the upper tubular portion 3b or the upper tubular portion 3C may be formed in a missing shape.

(Effects of the Invention) In this invention, the warp direction tubular portion, the weft direction tubular portion, and their intersections are all formed into an integrated structure in which the warp threads and the weft threads intersect. Since the weft thread is threaded over the entire length of the tubular part and the intersection part in the weft direction, the boundary between the tubular part in the warp direction and the intersection part is the warp thread. The boundary between the tubular part and the crossing part in the weft direction is connected by a weft thread. In addition, in the tubular part in the warp direction, the weft threads run in a zigzag pattern in the circumferential direction and connect all the warp threads, and in the tubular part in the weft direction, the warp threads pass in the circumferential direction and connect all the weft threads. Therefore, there are no seams in any part. Since the adjacent weft threads of each part are laminated with alternating directions so as to intersect with each other, the mutual bond between the warp threads and weft threads is strong, and the shape is stable and does not easily collapse. Since the tubular portion and the intersection portion are organized in the same woven fabric, the arrangement density of the warp and weft yarns is uniform in each portion, and no strength unevenness occurs.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the details of the structure of the first embodiment of the present invention, FIG. 2 is a perspective view showing the outline of FIG. 1, and FIG.
FIG. 4 is a perspective view showing details of the structure of the second embodiment; FIG. 5 is a perspective view schematically showing the structure of FIG. 4; FIG. 6 is a perspective view of the second embodiment. FIG. 7 is a perspective view showing details of the structure of the third embodiment, FIG. 8 is a perspective view showing the outline of FIG. 7, and FIG. 9 is a perspective view showing the external appearance of the third embodiment. , FIG. 10 is a perspective view showing the outline of the structure of the fourth embodiment, FIG. 11 is a perspective view showing the appearance of the fourth embodiment, and FIG.
13 is a perspective view showing the outline of the structure of the fifth embodiment, FIG. 13 is a perspective view showing the appearance of the fifth embodiment, and FIG. 14 is a perspective view showing the appearance of the sixth embodiment. 3: warp, 4: weft, 5b, 5c, 5d, 5
e: Open end, 6a (1a, 2a): Intersection, 6b
(1b, 2b), 6c (IC, 2C): Vertical tubular part, 6d (ld, 2d), 6e (Ie,
2e), 6f, 6g: horizontal tubular part. Patent applicant Shikishima Canvas Co., Ltd. Agent Patent attorney Takeshi Sakano Ryoji Fuyoshida

Claims (1)

[Claims] [1] At least two tubes each consisting of a large number of warp yarns and weft yarns arranged substantially perpendicularly are arranged in a cross shape, a T shape, or an L shape.
It is formed into a cross-tubular shape that intersects in the shape of a letter, etc., and the weft threads meander between the warp threads of the warp threads in the warp-wise tubular part, the weft-direction tubular part, and the intersections of these parts, and adjacent weft threads cross each other. The above-mentioned weft threads extend in the circumferential direction in the warp direction tubular part and connect all the warp threads in a tubular shape, and in the weft direction tubular part and the above-mentioned intersection part, the entire width is The above-mentioned weft threads run across the pipes and connect all the warp threads between them in the weft direction, and in the tubular part in the weft direction, the warp threads run in the circumferential direction and connect all the weft threads in a tubular shape, and the warp threads run in the tubular part in the warp direction and connect all the warp threads in the weft direction. A cross tubular fiber structure characterized in that the warp threads are passed through the entire length of the intersecting portions of the fibers, and all of the weft threads therebetween are connected in the warp direction. [2] The crossed tubular fiber structure according to claim 1, wherein the warp threads of the tubular portion in the weft direction are continuous in the form of a single helical coil. [3] The intersecting tubular fiber structure according to claim 1 or 2, wherein adjacent warp yarns inserted into the tubular portion and the intersecting portion in the warp direction are connected at one end. [4] The crossed tubular fiber structure according to any one of claims 1 to 3, wherein adjacent weft yarns laminated in the weft direction tubular portion and the intersection portion are connected at one end. . [5] Claims 1 to 4, wherein the weft threads of the weft-direction tubular portion are all laminated to have the same length, and the weft-direction tubular portion is formed perpendicularly to the warp-direction tubular portion. The crossed tubular fibrous structure according to any one of paragraphs. [6] The weft threads of the weft-direction tubular portion are laminated with varying lengths in order, and the weft-direction tubular portion is formed in a diagonal cross shape with respect to the warp-direction tubular portion. 5. The intersecting tubular fiber structure according to any one of items 1 to 4.