JPH0134176Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an eyeglass frame using fiber-reinforced synthetic resin as a material.

[Background of the idea]

2. Description of the Related Art Eyeglass frames using fiber-reinforced synthetic resin as a material for the front frame have been known. Generally, the front frame is formed by molding, for example, a substantially inverted 8 is provided in a mold.
After arranging one reinforcing fiber band in a figure-eight shape along the groove in the shape of the molding groove, an appropriate synthetic resin is injected into the molding groove, and then hardened. It was molded.

By the way, since the reinforcing fiber bands are arranged in a series in the molding groove, when the synthetic resin is injected or the synthetic resin is cured, the reinforcing fiber bands may be biased toward the center of the synthetic resin or the fiber bands may be pulled. etc. sometimes occurred.

Furthermore, the wisdom and bridge of the front frame are
This is a part of the front frame that requires relatively high strength, and in particular, the front frame requires strength to receive the rotational force from the temple, and is a part that particularly requires reinforcement with reinforcing fibers.

However, this molding method involves forming a protruding groove that protrudes laterally with respect to the molding groove and performing integral molding, and a part of a single reinforcing fiber as described above is wrapped around the small protruding groove. However, it was not easy to inject synthetic resin and cure it while maintaining that state.

[Purpose of invention]

Based on the above-mentioned background, the present invention aims to provide a lightweight and strong eyeglass frame in which the front frame is made of synthetic resin that is easily and reliably reinforced with reinforcing fibers. .

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

The glasses frame 1 includes a pair of lens mounting parts 2,
2 and a bridge section 3 that connects the pair of lens mounting sections 2 and 2, a front frame 4 is integrally molded with a synthetic resin 6 in which reinforcing fibers 5 such as carbon fibers, glass fibers, and aramid fibers are embedded. In addition, the temple bodies 9, 9 are rotatably attached by hinges 8 to the tongues 7 protruding from both upper ends of the lens attaching parts 2, 2.

The front frame 4 is formed by the following method. That is, a molding groove 11 is formed in each of the upper and lower molding molds 10,
This molding groove 11 includes a pair of first and second molding grooves 11a and 11b corresponding to the lens mounting portions 2 and 2.
and a third molding groove 11c corresponding to the bridge portion 3, forming a generally inverted 8 shape as a whole. Further, the first and second forming grooves 11a, 11
b has fourth molding grooves 11d and 11d corresponding to the slot 7;
are respectively formed on the upper outer side, and the fourth molding grooves 11d and 11 of one of the molding molds 10 of the pair of molding molds 10 are formed.
d, a deep hole 11e is formed inward of the mold to form the foot 7a of the tip 7.

A first reinforcing fiber band 5a made of the reinforcing fibers 5 is placed in the molding groove 11 of one of the molding molds 10 in the mold above, and a third molding is performed on the upper side of the first and second molding grooves 11a and 11b. A second reinforcing fiber band 5b made of the reinforcing fibers 5 is placed across the groove 11c, and a third forming groove 11c is provided on the lower side of the first and second forming grooves 11a and 11b. The first and second reinforcing fiber bands 5a,
5b are extended into the fourth forming grooves 11d, 11d, and arranged in a relaxed state in the fourth forming grooves 11d, 11d so as to be stacked one on top of the other, and further into the deep hole 11e. The ends of the fibers 5a and 5b are pushed in and arranged.

After arranging the first and second reinforcing fiber bands 5a and 5b in the molding groove 11 in this way, the upper and lower molding molds 10 are combined, and an appropriate synthetic resin 6 is injected into the molding groove 11. Thereafter, it is hardened to form the front frame 4.

Therefore, the front frame 4 includes a first reinforcing fiber 5a that extends over the upper side of both lens attachment parts 2, 2 through the bridge part 3, and a first reinforcing fiber 5a that extends over the upper side of both lens attachment parts 2, 2 through the bridge part 3. It is composed of a synthetic resin 6 with the second reinforcing fiber 5b as a core material, and furthermore, the first and second reinforcing fibers 5 are
The structure is such that both end portions of a and 5b are arranged so as to overlap and engage with each other.

Front frame 4 molded as described above
The frame is made of lightweight and high-strength synthetic resin. In addition, since both the first reinforcing fiber band 5a and the second reinforcing fiber band 5b exist in the bridge portion 3 and the edge 7 portion, the strength can be increased compared to other portions of the front frame 4, and the front It can improve the durability of the frame.

[Effect of idea]

The present invention is constructed as described above, and the entire synthetic resin that molds the front frame is reinforced with reinforcing fibers, and the bridge and edges of the front frame are further reinforced than other parts, making it lightweight and lightweight. Moreover, it is possible to provide an eyeglass frame that has excellent strength and durability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a front vertical sectional view of the front frame, and FIG. 3 is a front view showing the relationship between one of the molds and the reinforcing fiber band. FIG. 4 is an enlarged view showing the state of the reinforcing fiber band in the fourth molding groove portion of the mold. 2... Lens attachment part, 3... Bridge part, 4... Front frame, 5... Reinforcing fiber, 5a... First reinforcing fiber band, 5b... Second reinforcing fiber band, 6... Synthetic resin, 7
...Wisdom.

Claims (1)

[Scope of utility model registration request] In an eyeglass frame in which a front frame consisting of a pair of lens attachment parts and a bridge part that connects the lens attachment parts is integrally molded with synthetic resin, a first reinforcing fiber band is provided above both lens attachment parts via the bridge part. and a second reinforcing fiber band that is stretched over the lower side of both lens attachment parts via a bridge part, each end of which is engaged at a tongue part that projects from the side of both lens attachment parts. glasses frames.