JPS62263034A - Production unit for fiber reinforced resin steering wheel core material - Google Patents

Abstract

PURPOSE:To make it possible to house metal bars at the center of the ring part of a steering wheel core material and consequently stabilize its quality by a structure wherein a first and a second wind up jigs are fixed to each other in the state that the metal bars are fitted into the grooves of the first wind up jig. CONSTITUTION:Grooves 8d, each of which extends radially from a peripheral groove 8a and has semi-circular cross section, are provided near the notched grooves 8b of the abutting surface of a second wind up jig 8. Grooves 7c, each of which has the same form as that of the groove 8d, are provided on the abutting surface 7b of a first wind up jig 7 so as to form holes 12 in the state that both the jigs are abutted against each other. Each metal bar 13 imbedded in the ring part 2 of a core material 1 is provided with pin-like holding parts 13a, which can fit to the holes 12. The holding parts 13a of the metal bars 13 are fitted into the grooves 7c of the first wind up jig 7, which is, in succession, covered by the second wind up jig 8. After that, a long fiber impregnated with synthetic resin is wound up by the gigs by rotating a main shaft 6 so as to form the ring part 2, spoke parts 3 and a boss part 4 in order to mold a steering wheel core material by curing the resin.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing a steering wheel core material made of fiber-reinforced resin.

(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 resin (hereinafter referred to as FRP-fi) in order to reduce weight and increase strength.
In practical use, a core material is formed by winding and laminating reinforced plastics (reinforced plastics), and the surface is treated with a surface material such as leather. The FRP forming the core material is made by impregnating a continuous fiber bundle of glass fiber, carbon fiber, etc. with a synthetic resin, such as polyester resin, epoxy resin, etc., and winding it around a predetermined mold and laminating it.
The synthetic resin is cured.

An example of a conventional apparatus for manufacturing this core material will be explained based on FIGS. 7 to 9. Normally, the steering wheel core 1 consists of a ring part 2, spoke parts 3, and boss parts 4, as shown in FIG. Further, as shown in FIG. 9, the device 5 for forming the core material 1 is attached to a first winding jig 7 fixed to the main shaft 6 and aligned with the first winding jig 7. The main shaft 6 is generally composed of a second winding jig 8 and a boss fitting 9 attached to the tip of the main shaft 6. Grooves 7a and 8a each having a semicircular cross section formed in the first winding jig 7 and the second winding jig 8 are then brought together.

A ring winding groove 10 corresponding to the shape of the ring portion of the steering wheel core material 1 is formed.

The operation of the device 5 having the above configuration is to rotate the main shaft 6 to take up continuous t-long IB fibers such as glass tR fibers or carbon fibers completely impregnated with a synthetic resin such as polyester resin or epoxy resin, and move them into the ring winding groove 10. The ring part 2 is completely formed by winding, and then the long fiber is passed through the notch 8b of the second winding jig 8 to the boss metal fitting 9 disposed at the center of the ring part 2. The spoke portions 3'' and boss portions 4 are formed by bending and supplying.

In a steering wheel formed in this way and using nine-core material, when a vehicle has a collision and the driver collides with the steering wheel, the impact force at that time is
Although it is absorbed by the deformation of the steering wheel core material,
Furthermore, there is a technique disclosed in Japanese Utility Model Application No. 60-6525 by the present applicant as a method for improving the impact force absorption property.

As shown in FIG. 6, this occurs at the intersection of the ring part 2 and spoke part 3 of the steering wheel core 1.
A metal rod 11 extending along the ring portion 2 is provided. In this item, steering wheel core material 1
When an impact force acts on the metal rod 11, the metal rod 11 undergoes plastic deformation, which suppresses the packing ring and reduces the repulsive force exerted on the driver.

The method for manufacturing the steering wheel core material 1 in which the metal rod 11 is embedded uses the manufacturing apparatus 5 described above.
After winding the continuous long fiber in the ring winding groove 10 halfway through 1, the winding is stopped, a metal IAn 11 is manually put into the ring winding groove 10, and the continuous long fiber is completely wound again from above. I try to take it.

(Problem to be solved by the invention) However, since the metal rod is inserted into the steering wheel core material by hand by temporarily stopping winding, productivity is extremely low. However, there was a problem in that the metal rod 11 was rarely placed in the center of the ring portion 2, resulting in a decrease in performance.

The present invention has been made in view of the above problems, and its purpose is to make the metal rod fit in the center of the ring portion.

(Means for solving problem t: 1F) As a means for solving the above problems and achieving the purpose, in the above-mentioned fiber-reinforced resin steering wheel core manufacturing apparatus,
In the notched groove proximal mill, grooves extending in the radial direction from each circumferential groove are provided at mutually corresponding positions on the contact surfaces of the first winding jig and the second winding jig, respectively. A holding part is provided on a metal rod that can be stored in the ring part winding groove, and the holding part is fitted into the hole to form a hole. It is held in a groove.

(for production) The above configuration works as follows.

Insert the holding part of the metal rod into the groove provided on the contact surface of the first winding jig, and then cover the holding part of the metal rod with the groove of the second winding jig. By fixing the handle, the metal rod can be held within the ring winding groove. By winding up a continuous length of horizontal composition, it is possible to store the metal rod in the center of the ring part of the steering wheel core material, resulting in stable quality.

(Embodiment) Next, an embodiment of the present invention will be described based on FIGS. 1 to 4. Incidentally, the same parts or parts as those of the prior art device described above are given the same numerals.

A groove 8d having a semicircular cross section extending radially from the circumferential groove 8a is provided in the vicinity of the cutout groove 8b of the contact surface 8c of the second winding jig 8 with the wJ1 blowing jig 7. M? g8 d is
It may be a tapered groove that becomes narrower toward the center.

The contact surface 7b of the first winding jig 7 is also provided with a groove 7c having the same shape and at a position corresponding to the groove 8d. A hole 12 is formed by matching them. At this time, if the grooves 7(i, '8d) are tapered, they become tapered holes.

On the other hand, the ring portion 21Cf of the steering wheel core material 1
As shown in FIG. 4, the installed metal rod 13 has a ring portion formed by combining the circumferential groove 7a of the first winding jig 7 and the circumferential groove 8a of the second winding jig 8. A pin-shaped holding portion 1511 that can be fitted into the hole 12 is provided. Crest holding part 1
3 is made of a low melting point alloy or thermoplastic resin, and is inserted and attached to a metal rod.

When embedding this metal rod 15 in the ring portion 2 of the steering wheel core material 1, first, the groove 7c of the first winding jig 7 is
Fit the holding part 13a of the K metal rod 13, and then
The second winding jig 8 is attached to the first winding jig 7 so as to cover the groove 8dt of the winding jig 8.

Then, the ring winding groove 10 and the boss metal fitting 9 attached to the tip of the main shaft 6 are impregnated with synthetic resin, and the entire main shaft 6 of the sublong fibers is rotated and wound to form the ring portion 2, the spoke portion 3. A boss portion 4 is formed. Next, the steering wheel core material is formed by heating to a predetermined temperature to harden the synthetic resin impregnated into the long fibers. At this time, metal t4
! Since the holding portion 15a of No. 13 is made of a low melting point alloy or thermoplastic resin, it will melt.

As described above, the metal rod 13 is held within the ring part winding unit 10 and is buried so as to be located at the center of the cross section of the ring part 2 without being displaced during winding of the long fibers.

The holding portion 14a of the metal rod 14 shown in FIG. 5 is formed integrally or detachably so that the holding portion 143 can be used many times, and is designed to reduce costs.

Note that after molding, the holding portion protruding from the ring portion 2 is cut off.

(Effects of the Invention) The present invention provides a hole in the abutting surfaces of the first winding jig and the second winding jig, and fits the holding part of the metal rod into the throttle hole.
Since the metal rod is held in the winding groove, the metal rod does not shift its position and the quality is stable. Also,
Since the metal rod is attached from the beginning of winding the long fibers, there is no need to stop winding midway through the winding process, resulting in improved productivity.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, and FIG. 2 is a partially enlarged side view of the embodiment of FIG. 1 when assembled. FIG. 3 is a partially sectional front view showing the steering wheel core material after molding by the apparatus shown in FIG. 1; FIG. 4 is a perspective view showing an embodiment of the metal rod and the holding part.
□, Figure 5 is a perspective view showing another embodiment of the metal rod and the holding part, Figure 6 is a schematic front view of the steering wheel core material having the metal rod, and Figure 7 is the steering wheel core material. FIG. 8 is a side view of a conventional manufacturing device; FIG. 9 is an exploded perspective view of FIG. 8. 7... First winding jig 8... Second winding jig 7b * 8 c... Contact surfaces 7c, 8d... Grooves? ... Boss metal fitting 10 ... Ring part winding groove 12 ... Hole 13 ... Gold 4 bar 13a ... Holding part (stone) 6 =

Claims (1)

[Claims] (1) Fix the first winding jig and boss metal fitting to the main shaft, and
A ring part winding groove is formed by aligning the circumferential groove of the second winding jig with the circumferential groove of the second winding jig, and the continuous filament impregnated with resin is wound in the ring part winding groove to form the ring part. Further, a notch groove is provided on the boss metal fitting side of the ring part winding groove, and the arrangement direction of the continuous long fibers is changed to the boss metal fitting side in the notch groove, so that the continuous long fibers are placed on the boss metal fitting. In an apparatus for manufacturing a fiber-reinforced resin steering wheel core material that is wound to form a boss portion and a spoke portion, the first winding jig and the second winding jig are located near the notch groove. Grooves extending in the radial direction from each circumferential groove are provided at corresponding positions on each contact surface with the tool, and these grooves are combined to form a hole, which can be stored in the ring portion winding groove. 1. An apparatus for manufacturing a fiber-reinforced resin steering wheel, characterized in that a holding part is provided on a metal rod, and the holding part is fitted into the hole to hold the metal rod in the ring part winding groove.