JPH11108040A - Member with insertion hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mold a member with an insertion hole in a flange in simple manufacturing facilities without requiring the number of manufacturing processes. SOLUTION: When an insertion hole (s) to insert a hinge shaft 8 therein is formed in the flange of a fiber reinforced resin luggage box for a motorcycle, recesses (c),... with preset width and depth in a vertical direction are alternately formed and parts of the bottoms of the recesses (c),... are communicated with one another in the cross direction to form the insertion hole (s). Such a luggage box can be efficiently manufactured by heating a fiber reinforced resin sheet at a resin melting point or higher and molding it in a fluid molding method, in which it is molded in a fluid condition with a mold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a seat hinge of a luggage box of a motorcycle or the like.

[0002]

2. Description of the Related Art Conventionally, there has been known a technique of covering an upper part of a luggage box of a motorcycle or the like with an openable and closable sheet, and such a sheet is generally hinged to a flange at the tip of the luggage box. Often done. Such a hinge portion is generally formed by forming a hole for inserting a hinge shaft in the width direction of the flange portion at the tip of the luggage box, and fixing the hinge shaft inserted through the hole to the seat side. It is.

[0003]

When the above-mentioned luggage box is made of resin, for example, to reduce the weight of the vehicle body, if a shaft insertion hole is formed in a flange portion or the like, the luggage box penetrates in the width direction. In order to form the insertion hole, it is necessary to use a slide die or the like as a molding die or to perform drilling later, which causes problems such as a complicated die and a large number of manufacturing steps. In addition, there is a problem in that if a separate connection is to be performed using a hinge fitting or the like, the number of parts and the number of assembling steps increase, and moreover, the weight tends to increase.

Therefore, an object of the present invention is to form a member having an insertion hole in a flange portion without requiring a man-hour for manufacturing, and to be able to be formed by a simple manufacturing facility or the like.

[0005]

To achieve the above object, according to the present invention, there is provided a member according to claim 1, wherein an insertion hole through which a shaft is inserted is formed in a width direction of a flange portion having a predetermined width and a predetermined thickness. The insertion hole is formed by connecting recesses having a predetermined width and a predetermined depth alternately engraved from two directions opposed to the flange portion in the width direction.

That is, concave portions are alternately engraved from two opposing directions, an overlap portion is provided near the bottom of the depth of the concave portion carved from both directions, and a gap is formed between the upper and lower concave portions in the width direction. So that an insertion hole is formed near the bottom of the recess. By doing so, for example, when molding with a mold or the like, molding can be performed without using a slide mold or the like, and molding can be performed with simple equipment.

A member having such an insertion hole can be applied to various members such as a fastening shaft, a connecting shaft, a support shaft, etc., through which various shafts can be inserted.

According to a second aspect of the present invention, a member having an insertion hole is formed by a flow molding method from a laminated sheet in which a long fiber mat and a thermoplastic resin are laminated.

Here, in the fluid molding method, a predetermined amount of blank material is cut out from a laminated sheet in which a thermoplastic resin and a long fiber mat are laminated in advance, and the blank material is heated at a temperature higher than the melting point of the resin to form a mold. It is a method of press molding in a state where the resin flows in the inside, and if such a flow molding method is adopted, it is possible to easily mold and improve the productivity, and the strength of the flange portion around the insertion hole Can be improved. In addition, in such a flow molding method, the advantages of the present invention can be effectively utilized because the molding is performed using a mold.

According to a third aspect of the present invention, the member having the insertion hole is applied to a luggage box of a motorcycle or the like, and the insertion hole is configured as a hinge shaft insertion hole of the luggage box for pivotally supporting the seat. I made it.

If the luggage box is applied to a luggage box of a motorcycle or the like, the flange portion can be easily formed, for example, when the luggage box is made of resin to reduce the weight.

[0012]

Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a side view of the luggage box of the motorcycle according to the present invention, FIG. 2 is a perspective view of a flange portion at the tip of the luggage box, FIG.
4 is a sectional view taken along line AA of FIG. 3, and FIG. 5 is a sectional view taken along line BB of FIG.

A member having an insertion hole according to the present invention is shown in FIG.
The luggage box 1 of a motorcycle as shown in FIG. 1 is applied, and a flange portion 1a at the tip of the luggage box 1 is provided with a hinge connection portion with a seat covering the upper surface of the luggage box 1.

The luggage box 1 is formed from a fiber reinforced resin obtained by reinforcing a thermoplastic resin polypropylene as a matrix resin with a glass long fiber as a reinforcing fiber. In the embodiment, a 40 wt. % Swirl mat and a laminated sheet obtained by laminating 60 wt% of polypropylene subjected to heat and weather resistance treatment are used as raw materials and molded by a flow molding method.

That is, in this flow molding method, a predetermined amount of blank material is cut out from the plate-like laminated sheet, and the cut blank material is heated by a heater or the like to a temperature higher than the resin melting point.
After heating to about 0 to 220 ° C. to melt the resin and make it flowable, the heated blank material is transferred to a mold, immediately clamped and pressed, as shown in FIG. The luggage box 1 having the flange portion 1a is integrally formed.

Incidentally, the luggage box 1 made of fiber-reinforced resin formed in this manner is, for example, a thermosetting resin reinforced with chopped strand glass or the like, and is compared with an SMC (sheet molding compound) molded product which is press-molded. The strength per equivalent weight is strong, the Izod impact value can be about twice as high, the molding cycle is short, and the productivity is excellent.

The luggage box 1 is attached to a support member 3 fixed to a frame 2 with a plurality of connecting fittings 4, and a support fitting 6 for receiving an upper end of a rear cushion 5 is provided on a rear end side of the luggage box 1. Can be attached.

At the hinge connection portion of the flange portion 1a,
As shown in FIG. 2, an insertion hole s is formed by alternately engraving the tip of the flange portion 1 a from above and below.

That is, as shown in FIGS. 3 to 5,
The flange portion 1a has a predetermined thickness in the vertical direction, and projects forward with a predetermined width and a predetermined extension amount. The flange portion 1a has a semicircular bottom surface having two upper surfaces and two lower surfaces. The recesses c,... Are formed alternately, and the bottom sides of these recesses c,.

The upper and lower bottom semicircular recesses c, c
The semi-circular portions overlap each other in the thickness direction, and at least the semi-circular portions are carved to a depth that enters the concave portion c on the other side, so that a circular insertion hole s is formed. I have. Further, in the width direction, at least the ends on the near side are lined up in a straight line or slightly in the recess c on the other side so that no gap in the width direction is formed between the adjacent upper and lower recesses c. The insertion hole s is formed so as to be completely penetrated.

When the insertion hole s is formed as described above, as shown in FIG.
The seat 7 is connected to the flange portion 1a so as to be swingable around the hinge shaft 8 by being inserted through the hinge shaft 8 and fixed with the nut 9.
In addition, during the molding, the glass long fiber and the polypropylene flow integrally without separating, and the glass long fiber is filled to the end, so that the necessary strength of the flange portion 1a is sufficiently secured.

In the above-described molding using a metal mold, the insertion hole s can be molded without using a slide mold or the like, so that the manufacturing equipment and the like can be configured simply. In addition, since it is not necessary to drill the holes later by machining or the like, no man-hour is required.

The present invention is not limited to the above embodiment. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same operation and effect belong to the technical scope of the present invention. For example, the insertion hole s may be a hole for inserting a target axis other than the hinge axis, and the number, shape, and the like of the concave portions c are arbitrary. As long fibers, carbon long fibers or the like can be used.

[0024]

As described above, the member having the insertion hole according to the present invention has a predetermined width and a predetermined depth alternately engraved from two directions opposed to the flange portion. Since the recesses are connected to form an insertion hole in the width direction, for example, when molding with a mold or the like, molding can be performed without using a slide mold or the like, molding can be performed with simple equipment, and the number of manufacturing steps can be reduced. I can do it. Also, as in claim 2,
If a member having an insertion hole is formed by a flow molding method from a laminated sheet in which a long fiber mat and a thermoplastic resin are laminated, the member can be efficiently manufactured, and the strength of the flange portion around the insertion hole can be improved. Can be done. Further, when the member having the insertion hole is applied to a luggage box of a motorcycle or the like as in claim 3, for example, when the luggage box is made of fiber-reinforced resin to reduce the weight, the hinge structure of the flange portion can be easily formed. Can be molded.

[Brief description of the drawings]

FIG. 1 is a side view of a luggage box of a motorcycle according to the present invention.

FIG. 2 is a perspective view of a flange portion at a tip of a luggage box.

FIG. 3 is a plan view of the flange portion.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

Reference numeral 1 denotes a luggage box, 1a denotes a flange portion, 8 denotes a hinge shaft, c denotes a concave portion, and s denotes an insertion hole.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shuichi Kawamoto 1-4-1 Chuo, Wako-shi, Saitama Pref. Honda Motor Co., Ltd.

Claims (3)

[Claims] 1. A member in which an insertion hole through which a shaft is inserted is formed in a width direction of a flange portion having a predetermined width and a predetermined thickness, wherein said insertion hole is opposed to said flange portion in two directions. A recess having a predetermined width and a predetermined depth, which are alternately engraved from each other, and are formed to communicate with each other in the width direction. 2. The member having an insertion hole according to claim 1, wherein the member having the insertion hole is formed by a flow molding method from a laminated sheet in which a long fiber mat and a thermoplastic resin are laminated. Having an insertion hole. 3. The member having an insertion hole according to claim 1 or 2, wherein the member having the insertion hole is a luggage box of a motorcycle or the like, and the insertion hole is configured to pivot a seat so that the seat can swing. A member having an insertion hole, which is configured as a hole for inserting a hinge shaft of a supporting luggage box.