JPS62178321A - Long fiber reinforced resin structural member having branched part - Google Patents

Abstract

PURPOSE:To obtain a long fiber reinforced resin structure having a branched part which can be manufactured without making use of a branching pin and is superior in strength, by forming the branched part by winding a fiber round a connecting member arranged on a branched position at the time of winding. CONSTITUTION:A long fiber reinforced resin structure having a branched part is composed of the same formed by winding a resin impregnated fiber round the same and the branched part is formed by winding the fiber round a connecting member arranged on a branched position at the time of winding. As the material of the connecting member, a metal, plastics and FRP are mentioned. As a form of the connecting member, for example, the form obtained by bending a wire, the spiral form, the form obtained by providing several protrusions on the wire spirally, the comb-shaped from and the T-shaped form the surface of which is provided with a large number of the protrusions are mentioned. The branched part like this can be laminated by winding the resin impregnated fiber round the same densely, a void part is not generated and the same can be made very strong. As a result of the above, a branching pin can be made unnecessary.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a long fiber reinforced resin structure having branched parts,
For more information, refer to the fiber -reinforced resin structure with excellent branches. By impregnating fibers with a synthetic resin such as epoxy tree 1Ia1 phenol resin, winding this around a frame or mold, and then curing the resin, a lightweight and strong fiber-reinforced resin structure is manufactured. A method has been developed.

Since it is possible to obtain a large and high-strength structure, this manufacturing method is used to manufacture long fiber-reinforced resin structures for heels, and for example, it is also applied to steering wheel core materials for the ITization of steering wheels. There is. Further, this long fiber reinforced resin structure will be explained using a steering wheel core material as an example.

In general, a long fiber reinforced four-phase steering wheel core material consists of a ring part and a spoke part, as shown in Figure 3.
First, a generally disc-shaped winding jig (not shown) having a groove formed on the outer circumferential surface corresponding to the shape of the ring part 12 of the steering wheel core material 11 is coated with a synthetic resin such as polyester resin or Epoquin resin. resin-impregnated, e.g. glass fiber,
Long fibers such as carbon fibers are wound and laminated, and then ring part 1
2, the fibers are passed between the guide pins 15a and 15b to change the feeding direction of the fibers and stack them.
3, a boss portion (not shown) and spoke portions 14 are laminated, and then heated and cured.

However, as shown in FIG. 3, the branching portions 13 of the ring portion 12 and the spoke portions 14 of the steering wheel core material 11 manufactured as described above are directed from the ring portion 12 to the boss portion via the guide pins 15a. The supplied fibers bent into the spoke part 14a become the spoke part 14a, and the silling part 1 is bent to the boss part side.
2 becomes the spoke portion 14b, a void portion 16 is formed in this portion, resulting in a disadvantage that the branch portion 15 becomes fragile.

Therefore, as a jig for manufacturing the steering wheel core material 11, the present inventors proposed a jig 17 in which a branch pin 19 is provided in a groove 18 in a branch part of the jig, as shown in FIG. (For example, Utility Application 1986-7672)
No. 2).

When a steering wheel core material is manufactured using this jig 17tl, the resin-impregnated long fibers are entangled with the branch bottle 19 in the branched portion 15 of the core material, as shown in FIG. 5, so that the formation of voids is prevented. A long fiber reinforced resin steering wheel core material having branched portions with excellent strength can be obtained.

[Problem that the invention seeks to solve]

However, when manufacturing a steering wheel core material made of long fiber reinforced resin having branched portions as described above, resin-impregnated long fibers are added to the branched portions as shown in FIG.
118 is wrapped around a jig 17 having a branch bottle 19 and laminated, and then heated and cured in that state. Therefore, the hardened steering wheel core material 11 is placed in a jig 1.
When removing the branch pin 19 from the jig 17, it is necessary to remove the branch pin 19 shown in FIGS. Furthermore, as the branch pins 19 are repeatedly attached and detached, there is a problem in that the hole in the jig 17 in which the branch pins 19 are mounted becomes larger.

The present invention is intended to solve the above problems, and aims to provide a long fiber-reinforced resin structure having branched portions with excellent strength and which can be manufactured without using branching pins.

(Means for solving lBj k* points) The uninvented long fiber reinforced resin structure having branched parts is obtained by winding resin-impregnated long fibers to form a long fiber reinforced resin structure having branched parts. This is characterized in that the fiber is wound around a locking member disposed at one branch point during the winding, thereby forming a branch part.

The locking member used in the invention can be found by hooking the 1/1 fat-impregnated long fiber at the branch point and changing the dipping direction when producing a long fiber reinforced resin structure with a branch point. , its material and shape are not limited to <j,
Its materials include gold, 1A, plastic,
Examples include FuP. The shape of the locking member may be, for example, a foot shape made by bending a wire, a spiral shape, a shape with several radial protrusions on the wire, a comb shape, a T-shape with many protrusions on the surface, etc. Can be mentioned.

When the locking member is rotatable and has a bent wire shape or a shape with protrusions on the wire, the resin-impregnated long fiber is wound and then the wire is rotated and bent at the branch point. The impregnated fibers and unbendable fibers may be entwined.

[For production]

The present invention is a long fiber reinforced #4 resin structure having branched parts formed by winding resin-impregnated long fibers.

During the winding, a locking member is provided at the branch point, and the resin-impregnated filament is wound around the locking member to form the branch part, so that the branch part does not hold the resin-impregnated fiber. It can be tightly wound and laminated, no voids are formed, and high strength can be achieved. As a result, it is possible to eliminate the need for the branching pins conventionally used at the branching points of the fiber winding mechanism.And, since the locking member is buried in the branching portion, the locking member can be strengthened. Made of superior materials, such as steel or FRP,
Furthermore, if the shape is made into a T-shape, such as a PIJ, along the branch, the branch can be reinforced at the same time.

〔Example〕

An embodiment in which the present invention is applied to a steering wheel core material will be described with reference to the drawings.

First, unsaturated polyester (a
M fat-impregnated fibers impregnated with synthetic resin such as fat are repeatedly wound around a frame (as shown) for laminating the steering wheel core material.

At the time of this winding, as shown in FIG. 1, a locking member 5 made by bending a wire in a wavy manner was disposed on the ring part 2 of the branch part 3 of the steering wheel core material 1, and the ring part 2 was wound. Hooking the fibers on the locking member 5,
bend and wind the spoke portions 4. Then, the fibers that have been wound around the spoke portions 4 are hooked onto the locking member 5 and bent, thereby winding the ring portion 2. By repeating this winding nine times, densely laminated branch parts are formed.

The locking member 5 remains embedded within the branch s.

After winding several layers of impregnated fiber in this manner, the steering wheel core material is completed by heating and curing the resin.

Since the steering wheel core material heated as described above has branched parts without gaps and is laminated with fibers, the strength of the branched parts has deteriorated.

Further, after winding, by rotating the locking member, the fibers hooked and bent by the locking member and other fibers may be entangled.

In this embodiment, a locking member made of wire bent into a wave shape was used as the locking member, but in addition, a locking member 5a made of randomly bent wire as shown in FIG. Figure (b
), a locking member 5b having several radial protrusions on a wire, a helical image stopper 5c as shown in FIG. 2(C), and a tooth-shaped locking member 5c as shown in FIG. A T-shaped locking member 5d having a protrusion may also be used.

〔Effect of the invention〕

Long fiber-reinforced resin structure rod having branched portions of the present invention As described above, the resin-impregnated fibers are wound around the locking member disposed at the branched portions and are laminated to form the branched portions. Since the fibers can be laminated on each other, excellent strength can be obtained at one branch. As a result, it is possible to eliminate the need for branch bins that were conventionally used at the branch points of the jig for wrapping resin-impregnated fibers, and there is no need to cure the resin or remove the pins, simplifying the work. , productivity is the same as above.

Furthermore, if a member with excellent strength is used as the retaining member, the branch portion can be reinforced.

[Brief explanation of drawings]

Fig. 1 is a plan view of a branch part of a steering wheel core material according to an embodiment of the present invention, Fig. 2 (a), % (b), (C) and (d) are locking parts according to an embodiment of the present invention. A perspective view of the member. Fig. 3 is a plan view of a branch part of a steering wheel core material according to the prior art, Fig. 4(a) is a perspective view of the main part of a manufacturing jig according to the prior art, and Fig. 4(b) is a plan view of a branch part of a steering wheel core material according to the prior art. ) is a cross-sectional view of a main part of a manufacturing jig, and FIG. 5 is a plan view of a branch part of a steering wheel core material according to the prior art. In the figure, 1... Steering wheel core material 2... Ring part 3... Branch part 4... Spoke part 5... Locking member patent applicant Toyota Motor Corporation, 〆1-'i representative Person Patent attorney Yumi Kaede (1 other person) i3 i': @ (C) 5c Figure 3 Figure 5 x

Claims (1)

[Claims] A long fiber-reinforced resin structure having a branched portion is formed by winding resin-impregnated long fibers, and during the winding, branching is achieved by winding the fibers around a locking member disposed at the branched portion. 1. A long fiber-reinforced resin structure having a branched portion.