JPH038420Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a jig for manufacturing steering wheel core materials used in vehicles such as automobiles, and in particular, a jig made of fiber-reinforced resin by winding continuous long fibers impregnated with resin. The present invention relates to a manufacturing jig for laminating and forming steering wheel core materials.

(Prior art) In recent years, steering wheels, which are mainly attached to vehicles such as automobiles and small vessels such as motorboats, are made of fiber reinforced plastics (hereinafter referred to as FRP) in order to reduce weight and increase strength.
In practical use, a core material is formed by winding and laminating the core material, and the surface is treated with a surface material such as leather. The FRP core material is made by impregnating continuous long fibers such as glass fiber or carbon fiber with synthetic resin such as polyester resin or epoxy resin, winding them into a predetermined winding mold, and laminating them to form a synthetic resin. It is a hardened product.

Generally, in manufacturing the FRP steering wheel core material, first, as shown in FIGS. 3a to 3c, the steering wheel core material 1 is
A generally disc-shaped winding jig with a groove formed on the outer peripheral surface corresponding to the shape of the ring part 2 is made of glass fiber, carbon fiber, etc. impregnated with a synthetic resin such as polyester resin or epoxy resin. Continuous long fibers are wound and laminated, and then the direction in which the fibers are supplied from the ring part 2 is changed, and the boss part 3 and the spoke part 4 are wound and laminated to form them. In order to change the feeding direction of the fibers, the fibers are arranged between guide pins 5, 5 shown in FIGS. 3a and 3b.

However, as shown in FIG. 3b, the branch portions 2a of the ring portion 2 and the spoke portions 4 of the steering wheel core material 1 manufactured as described above are connected to the boss portions from the ring portion 2 via the guide pins 5a. Since the supplied fibers bent in the direction become the spoke parts 4a, and the fibers arranged again from the boss part 3 side to the ring part 2 become the spoke parts 4b, a void part 6 is formed in this part, For this reason, the branched portion becomes brittle, and as shown in Fig. 3c, in a bending fatigue test of the steering wheel core material 1 after the resin has hardened, it has a certain degree of strength against an external force on one side in the direction of arrow A. However, the strength of the branched portion 2a decreases when external forces are repeatedly applied in both directions of arrows A and B.

Therefore, as a jig for manufacturing the steering wheel core material 1, the inventors of the present invention have proposed the jig shown in FIGS. .

This manufacturing jig 10 has a ring-shaped second winding jig 13 bonded and fixed to the peripheral edge of one surface of a disk-shaped first winding jig 12 fixed to a main shaft 11. A ring portion 2 winding groove 10a having a substantially U-shaped cross section is formed on the outer peripheral surface of this manufacturing jig 10.
The tip of the main shaft 11 is connected to a small diameter portion 11a via a stepped portion.
A boss metal fitting 14 that is integrated with the FRP and becomes the boss part 3 of the core material 1 is attached to this small diameter portion 11a, and near the outer peripheral surface of this boss metal fitting 14, the spoke part 4 and the boss part 3 are attached. Guide pins 5 for regulating the branching portions of the winding jig 12 are implanted in pairs on the boss metal fitting 14 side plane of the winding jig 12, respectively. Further, the second winding jig 13 is formed with a notch groove 10b for branching the spoke part 4 from the ring part 2. Branch pins 15, 15 are implanted in the radial direction of the disk to change the direction in which the fibers are arranged in the portion 2a.

(Problems to be Solved by the Invention) However, the above-described conventional FRP steering wheel core manufacturing jig had the following problems.

First, in the conventional manufacturing jig 10, the ring portion 2
When forming the branching portion 2a between the and the spoke portions 4, the winding direction was changed by the notch groove 10b and the branching pins 15, 15, so that the branching portion 2a became 2 as shown in FIG. 4c. Although it is possible to prevent the gap 6 from being formed by being entangled with the branch pins 15, 15 of the book, as shown in FIG. 4d, the boundary surface 2b of the branch portion 2a is It is formed in a direction perpendicular to the direction. For this reason, since materials are generally weakest against forces in the direction perpendicular to the interface, there is a problem in that delamination occurs at this branching part and the binding of the laminated fibers comes undone. .

In addition, when the delamination phenomenon described above increases,
There was also a problem in that the transmittance of light was lost and the light was reflected at the boundary surface, and the resin turned white, impairing the aesthetic appearance of the core material.

The present invention was made in order to solve the above-mentioned problems, and the boundary surface formed at the branching part between the ring part and the spoke part of the steering wheel core member is arranged in a direction perpendicular to the direction in which external force is applied. It is an object of the present invention to provide a manufacturing jig that prevents the formation of layers and prevents delamination and whitening from occurring.

(Means for solving the problems) FRP according to the present invention to achieve the above purpose
The features of the jig for manufacturing steering wheel core materials include a first winding jig fixed to the main shaft, and a first winding jig fixed to the first winding jig, in which continuously supplied resin-impregnated long fibers are fixed to the first winding jig. A manufacturing jig for laminating the ring part, spoke part, and boss part of the steering wheel core material by winding it around the ring part winding groove of the second winding jig and the boss metal fitting fixed to the tip of the main shaft. A branch portion between the ring portion and the spoke portion is formed by changing the fiber arrangement direction using a pin implanted in a spoke portion forming notch groove formed on the boss metal fitting side of the ring portion winding groove. In the invention, the pin is installed in a direction inclined from the spoke part forming notch groove.

(Function) With the above structure, the first jig is fixed to the main spindle, the second jig is aligned and fixed to the first jig, and the boss fitting is attached to the tip of the main spindle.
While supplying resin-impregnated continuous long fibers to this production jig, the main shaft is rotated, and as the jig rotates, the long fibers are wound and laminated to form a steering wheel core material. At this time, since the pin installed in the spoke part forming notch groove that branches the spoke part from the ring part of the core material is oriented in an inclined direction, the fiber supply direction of the branched part is changed by getting entangled with this pin. Since the boundary surface is formed in an oblique direction with respect to an external force from a direction perpendicular to the fiber lamination direction of the ring portion, phenomena such as delamination and whitening do not occur.

As described above, phenomena such as delamination and whitening do not occur in the part where the spoke part branches from the ring part, so it is possible to strengthen the steering wheel core material and extend its life. Moreover, it can also contribute to maintaining the beauty of the core material.

(Example) Hereinafter, an example of the jig for manufacturing an FRP steering wheel core material according to the present invention will be described in detail with reference to the drawings.

1 and 2 are for explaining one embodiment of the present invention, and FIG. 1 is a front view showing an enlarged main part of the manufacturing jig of this embodiment, and FIG. FIG. 2 is a front view showing a branching portion between a ring portion and a spoke portion of a core material manufactured using the manufacturing jig. Note that the same reference numerals as in FIGS. 3 a to 3 c and 4 a to d indicate the same or corresponding members.

First, as shown in FIG.
0 is a manufacturing jig in which a ring-shaped second winding jig 13 is fixed to the peripheral edge of one side of a disc-shaped first winding jig 12 fixed to the main shaft 11. A ring portion 2 winding groove 10a having a substantially U-shaped cross section is formed on the outer peripheral surface of the ring portion 10. The tip of the main shaft 11 becomes a small diameter part 11a via a stepped part, and a boss metal fitting 14 that is integrated with FRP and becomes the boss part 3 of the core material 1 is attached to this small diameter part 11a. In the vicinity of the outer peripheral surface of the winding jig 12, guide pins 5 for regulating the branching portions of the spoke portions 4 and the boss portions 3 are arranged in pairs.
It is planted on the side plane. Note that this configuration is the fourth
It is approximately the same as Figures a and b.

The ring portion 2 winding groove 10a and the spoke portion 4
Branch pins 25, 2 are provided on the first winding jig 12 side of the intersection with the notched groove 10b for branching.
5 is installed obliquely in the direction of the second winding jig 13 with respect to the radial direction of the disk.

By laminating the FRP steering wheel core material using the manufacturing jig 20 having the above configuration, the branching portion 2a of the ring portion 2 where the spoke portion 4 branches as shown in FIG. The boundary surface 2b is deviated from the direction perpendicular to the fiber lamination direction of the ring portion.

It should be noted that what has been described above merely shows one embodiment of the present invention, and any modifications and changes may be made without departing from the purpose, structure, and effects of the present invention.

For example, although the branch pins 25, 25 have been described as being implanted in the portion of the ring portion 2 winding groove 10a on the first winding jig 12 side, the present invention is not limited thereto. It may also be implanted on the side of the second winding jig 13.

(Effects of the invention) As explained above in detail, the effects of the invention
The jig for manufacturing FRP steering wheel core material has the following effects.

Since diagonal branching pins are implanted in the spoke part forming notch grooves of the jig corresponding to the branching parts of the laminated fiber bundles of the ring part and the laminated fiber bundles of the spoke parts, The boundary surface that is formed is no longer orthogonal to the direction in which external force is applied, and phenomena such as delamination and whitening that occur at this branching part can be prevented, increasing the strength of the steering wheel core material against bending fatigue, etc. It is possible to improve the properties of the core material, extend the life of the core material, and also contribute to maintaining the aesthetic appearance.

[Brief explanation of the drawing]

1 and 2 are for explaining one embodiment of the present invention, and FIG. 1 is a front view showing an enlarged main part of the manufacturing jig of this embodiment, and FIG. FIG. 2 is a front view showing a branching portion between a ring portion and a spoke portion of a core material manufactured using the manufacturing jig. Also, Figures 3 a to c and Figures 4 a to d
3A to 3C are perspective views and enlarged plane views showing branching parts of the steering wheel core material. FIG. 4 is a front view showing a bending fatigue test;
These are a perspective view showing a conventional manufacturing jig, an enlarged exploded front view, an enlarged plan view of a branched portion, and an enlarged cross-sectional front view showing a boundary surface of the branched portion. Note that the same reference numerals in the figures indicate the same or corresponding members. DESCRIPTION OF SYMBOLS 1... Steering wheel core material, 2... Ring part, 2a... Branch part, 2b... Boundary surface, 3...
...Boss part, 4...Spoke part, 5...Guide pin, 10a...Ring part winding groove, 10b...Notch groove for forming spoke part, 11...Main shaft, 12...
First winding jig, 13...Second winding jig, 20...
Jig for manufacturing core material, 25...branch pin.

Claims (1)

[Claims for Utility Model Registration] A first winding jig fixed to the main shaft and a second winding jig fixed in alignment with the first winding jig are used to continuously supply resin-impregnated long fibers. A manufacturing jig for forming a ring part, a spoke part, and a boss part of a steering wheel core material in layers by winding it around a ring part winding groove of a tool and a boss metal fitting fixed to the tip of a main shaft, the ring A device for forming a bifurcated portion between a ring portion and a spoke portion by changing the fiber arrangement direction using a pin implanted in a spoke portion forming notch groove formed on the boss metal fitting side of the winding groove, wherein the pin is A jig for manufacturing a fiber-reinforced resin steering wheel core material, characterized in that the jig is installed in a direction inclined from the spoke part forming notch groove.