JPS61162324A - Manufacture of fiber reinforced resin structural material - Google Patents

Abstract

PURPOSE:To improve standard accuracy to a dimensional change and torsion of a fiber reinforced resin structural material, by a method wherein a plurality of constitutent elements constituting a structural material is formed of a continuous fiber bundle impregnated with resin beforehand and the plurality of the constituent elements are joined with other. CONSTITUTION:Constituent elements 2, 2' of a lower control arm are formed by a method wherein continuous fiber bundless 6, 6' impregnated with resin are wound round while they are being laid across notches 7 of each of jig plates 5 in spaces among rubber bushings 4, 4' and flanges 3, 3', and extenal form of the constituent elements 2, 2' of the lower control arm is formed and the impregnated resin is made to heat and cure desirably. Dimensions of both the controll arm constituent elements 2, 2' are measured after that and if necessary the dimensions of the lower control arm 1 are made into regular ones by machining the external surface of each of flanges.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a fiber-reinforced resin structure in which the structure is formed using continuous fiber bundles impregnated with resin.

(Prior Art) Recently, as described in British Patent Publication GB2004835A, etc., a continuous bundle of carbon fibers, glass fibers, aromatic expanded polyamide fibers, etc. is impregnated with epoxy resin or phenol resin, etc. A method of manufacturing a structure with excellent strength by winding it around a body or mold has been developed.

(Problem to be solved by the invention) However, since the above-mentioned structure is formed of continuous fiber bundles impregnated with resin, as the length of the structure increases, it twists, causing both ends of the structure to become twisted. The relative position of the structure may shift, or after the resin is cured, the structure may shrink and the dimensions of the structure may change.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to improve the specification accuracy with respect to dimensional changes, twists, etc. of fiber reinforced resin structures.

(Means for Solving the Problems) A plurality of constituent elements 2, 2' constituting the body 1 are formed in advance, and then the plurality of constituent elements 2, 2' are joined to each other.

(Function) Due to the above-mentioned configuration, the relative positional deviation at both ends of the structure 1 due to torsion can be corrected by alignment when joining the plurality of components 2, 2'. .

In addition, dimensional changes can be corrected by horizontally processing the joints of each component 2, 2 that do not affect the function of the structure 1, or by interposing spacers, etc. between each joint. Become.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 to 3, 1 is a lower control arm, and this control arm 1 is formed by assembling control arm components 2 and 2'.

Each control arm component 2, 2 is provided with a flange 3, 5 on one end side, and a rubber bush 4, 4 on each other end side.

A plurality of jig plates 5, 5 are arranged between the flanges 5, 3 and the rubber bushes 4, 4, and a plurality of jig plates 5, 5 are arranged between the flanges 3, 5 and the rubber bushes 4, 4. 1-5. The continuous fiber bundle 6 impregnated with resin is
, 6 are winding.

More specifically, the flanges 5, 3 and the attachment parts 4a, 4a of the rubber bushes 4, 4 are provided with a plurality of holes for folding the continuous fiber bundle 7. A plurality of guide grooves connecting the six holes are formed on the outer surface of the fiber 4, and the continuous fiber bundles 6, 6 are guided by the guide grooves and folded back.

At this time, the continuous fiber bundles 6, 6 are housed in the guide groove at a deep position, and the continuous fiber bundles 6, 6 are attached to the flanges 3, 5.
It does not protrude from the outer surface of '. Jig plate 5, 5
has a square shape in this embodiment, and the four corners of the jig plates 5, 5 are provided with series ll51! Fiber bundle 6,6
A notch 7 is formed for passing the wire. A glass continuous fiber bundle, a carbon continuous fiber bundle, or the like is used as the continuous fiber bundle 646, and an epoxy resin, a phenol resin, or the like is used as the impregnating resin to impregnate the continuous fiber bundle.

In order to manufacture the lower control arm 1, first, a plurality of support jigs 8 are prepared, and the plurality of support jigs 8 are
Arrange in one direction. As shown in FIG. 2, each support jig 8 has a column 8a extending in the vertical direction, and each column 8a has a groove 8b extending downward from the upper end of each column 8a. each formed. The jig plates 5, 5, the flanges 3, 3, and the mounting portions 43°4a' of the rubber bushes 4, 4 can be press-fitted into each of the grooves 8b, and these are attached to the struts 8 that form the grooves 8b. It is held by a pair of support parts 8C so as to be positionable in the vertical direction.

Each support jig 8 has a flange 5 (3), a jig plate 5 (5') and a rubber bush 4 (metal attachment part 4a).
(4a) is retained. At this time, attach the flange 3 (3) and rubber bush 4 (4j) to each support jig 8 on both ends.
4a (4a) and both 3,4C5't4'
) 5 t
51 are held respectively.

Next, the resin-impregnated continuous fiber bundle 6 was wound between the rubber bushing 4 (4'l) and the flange 5 (3'l) while passing it through the notch 7 of each jig plate 5. , lower control arm component 2G2
) by forming the outer shape of the lower control arm component 2) and curing the impregnated resin, preferably by heating.
form.

After this, both lower control arm components 2,
2, and if necessary, machine the outer surface of each flange 3 to make the lower control arm 1 a regular length.

Next, the mating surfaces of the flanges 3 and 5 are brought into contact with each other so that the rubber bushes 4 and 4 are parallel to each other, and a plurality of bolt insertion holes are bored in the peripheral edges of the flanges 3 and 5.

Then, by inserting bolts 9 into each bolt insertion hole and screwing nuts 10 onto each bolt 9, both components 2. 2 are connected to complete the lower control arm 1.

As described above, in this embodiment, by machining, for example, grinding each flange 5, 3 of the component 2.2, the longitudinal dimension of the lower control arm can be corrected, and the image Due to the alignment when joining the components 2, 2, both rubber bushes 4, 4 can be positioned in parallel without relative displacement.

FIG. 4 and FIG. 5 show another embodiment, and the same components as those in the previous embodiment are given the same reference numerals and the explanation thereof will be omitted.

The embodiment shown in FIG. 4 shows a configuration that achieves dimensional accuracy in the longitudinal direction of the lower control arm 1 in the case where the guide grooves in the previous embodiment are not formed on the outer surfaces of the flanges 3 and 5.

That is, if guide grooves are not formed on the outer surfaces of the flanges 3, 5, the continuous fiber bundles 6, 6 (only one shown) will protrude from the outer surfaces of the flanges 3, 5 as shown in the figure, and both flanges 3, 5 Even if the parts are brought into contact with each other and joined together, it is not possible to achieve the essential dimensional accuracy. Therefore, in this embodiment, a spacer 11 which is thicker than the continuous fiber bundles 6, 6 is interposed between the flanges 3, 3' in the non-protruding portions of the continuous fiber bundles 6, 6'. It is. In this case, the dimensional accuracy of the lower control arm 1 is improved by forming the components 2, 2 to have a smaller length than the normal length and machining the thickness of the spacer 11.

In the embodiment shown in FIG. 5, a triangular prism-shaped joining fitting 12 is prepared, and structural elements 2.2.2 are attached to each side thereof. By using such a joining fitting 12, the five components 2.2.2 can be attached. This joining fitting 12 can be made into a polygonal prism shape such as a square prism, a pentagonal prism, etc., and more components can be attached thereto.

(Effects of the Invention) As described above, the present invention is capable of correcting twisting, dimensional changes, etc. that occur when a structure is formed from resin-impregnated continuous fiber bundles. The standard accuracy of the structure can be improved as well.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a pair of lower control arm components constituting the lower control arm, Fig. 2 is a perspective view showing a support jig that holds a jig plate, and Fig. 5 is a perspective view of -J. An enlarged front view showing the joining relationship of the lower control arm components, FIGS. 4 and 5 are enlarged front views showing other embodiments, respectively.
5) It is a figure. 1...Lower control arm 2.2'...Lower control arm component 6...
・Continuous Fiber Bundle Patent Applicant Toyota Motor Corporation Fig. 1 ROARRO 5 Troll Arm 2.2゛ ・ROAKO Citrol End Type 11 Element 6 Continuous Fiber SONG Fig. 2

Claims (1)

[Claims] (1) A fiber-reinforced resin structure characterized in that a plurality of constituent elements constituting the structure are formed in advance using resin-impregnated continuous fiber bundles, and then the plurality of constituent elements are joined to each other. manufacturing method.