JPH09175280A - Structure of vehicular roof rail made of synthetic resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten safety by preventing a rail body part from being ruptured by the weight of a cargo on a roof rail so as to fall from a body roof part along with the cargo even though a part of the rail body part is damaged in case of emergency. SOLUTION: In a roof rail having a bar-like rail body part 11 and a fitting leg part 12 to a body roof part R and integrally formed of synthetic resin intermixed with glass fiber, a fall preventing member 15 is integrally embedded over the longitudinal direction of the rail body part 1 from the fitting leg part 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof rail mounted on a roof portion of a vehicle body of an automobile, and more particularly to a roof rail made of synthetic resin.

[0002]

2. Description of the Prior Art For example, a roof rail of a wagon car or a van type car is equipped with a roof rail for mounting and fixing skis or luggage. Conventionally, this type of roof rail has been made of metal such as metal extruded products such as aluminum and zinc alloys and die cast molded products, but in recent years, it has been synthesized from the viewpoint of weight reduction of vehicles, formability, and economical efficiency. Resin molded products have been proposed. 13 and 14 show an example thereof. The illustrated roof rail 50 is
The rail main body 51 and the rail main body 5 having a substantially rod-shaped outer shape
The mounting leg portion 52 is integrally bent from both ends of the vehicle body 1. The mounting leg portion 52 is mounted along both sides of the vehicle body roof portion via a mounting member such as a bolt (not shown). Note that the intermediate support portion 55 may be formed on the rail body portion 51 as shown by the chain line in FIG. 13.

The synthetic resin roof rail 50 is integrally mixed with glass fiber in order to enhance strength and impact resistance, and the rail main body portion 51 has a hollow portion 53 as shown in FIG.
Is formed. The hollow portion 53 also contributes to weight reduction and cost reduction of the roof rail.

As described above, the synthetic resin roof rail 50 is designed to have sufficient strength and impact resistance under normal use conditions. However,
When a user places an unexpected luggage on the roof rail by design, or when an unexpected and unexpected trouble or accident occurs, one of the rod-shaped rail main body portions 51 of the roof rail 50 on which the luggage is placed is placed. The part is partially damaged, which is broken by the weight of the load on the roof rails and falls from the roof part of the vehicle body together with the load.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above problems, and in the event of an emergency, even if a part of the rail main body is partially damaged, the roof rail An object of the present invention is to provide a highly safe structure of a synthetic resin vehicle roof rail in which the rail main body portion is not broken by the weight of the above-mentioned luggage and does not drop from the vehicle body roof portion together with the luggage.

[0006]

[Means for Solving the Problems] That is, the invention of claim 1 is a roof rail integrally formed of a synthetic resin mixed with glass fiber, which has a mounting leg portion to a vehicle body roof portion and a rod-shaped rail body portion. In the structure of the roof rail for a vehicle made of synthetic resin, the fall preventing member is integrally embedded in the rail main body along the longitudinal direction of the rail.

According to a second aspect of the present invention, in the first aspect, the end portion of the fall prevention member is fixed to the attachment member of the attachment leg portion in a pulling direction in the pulling direction of the fall prevention member. The present invention relates to the structure of a vehicle roof rail made of synthetic resin.

The invention of claim 3 is the same as claim 1 or 2
In the above, the fall prevention member has a structure including a metal filament, a pipe, a coil, or a plate.

Further, the invention of claim 4 is the same as claim 1
Alternatively, in the second aspect, the fall prevention member has a structure made of a synthetic resin filament or net.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an example of a synthetic resin roof rail for a vehicle of the present invention, FIG. 2 is a cross-sectional view of the rail main body portion, and FIG. 3 is an enlarged view of a mounting leg portion showing a state in which the roof rail is mounted on a vehicle body roof portion. A sectional view and FIG. 4 are bottom views of the mounting leg portion viewed from the vehicle body mounting surface side.

5 and 6 show another example of the fall prevention member. FIG. 5 is a perspective view showing an example of the metal fall prevention member, and FIG. 6 is an example of the synthetic resin fall prevention member. FIG. 7 is a perspective view showing a structure for fixing a fall prevention member to a mounting member, and FIG. 8 is a perspective view showing another example.

Further, FIGS. 9 and 10 show another example of the roof rail structure of the present invention. FIG. 9 is an enlarged sectional view of its mounting leg portion, and FIG. 10 is a member for mounting the fall prevention member of FIG. FIG. 3 is a perspective view of a main part showing a state of being fixed to the.

11 and 12 show an example of manufacturing the roof rail according to the present invention. FIG. 11 is a sectional view of the molding die, and FIG. 12 is an enlarged view showing a state in which a fall prevention member is arranged on the molding die. FIG.

As shown in FIG. 1, in a vehicle roof rail 10 of the present invention, a rod-shaped rail main body portion 11 and a mounting leg portion 12 for attaching to a vehicle body roof portion are integrally formed of a synthetic resin mixed with glass fibers. It will be. A fall prevention member 15 is integrally embedded in the roof rail 10 from the mounting leg 12 to the rail main body 11.

The synthetic resin constituting the vehicle roof rail 10 is not particularly limited, but since it is attached to the outside of the vehicle, it is desirable that it has excellent weather resistance as well as impact resistance. . Preferred are nylon resin, PC-ABS resin, PC-PBT resin and the like.
Further, there is no particular limitation on the glass fiber mixed in the synthetic resin forming the roof rail, and a known glass fiber cut into an appropriate length is used, and mixed according to the strength required for the roof rail. .

The rail main body portion 11 is a portion on which luggage or the like is placed, and as shown in FIG.
Is formed in a rod shape. By providing the hollow portion 13 in the rail main body portion 11, it is possible to enhance the rigidity and elasticity of the synthetic resin vehicle roof rail 10 to improve the shock absorbing property and also achieve the weight reduction. In addition, such a hollow portion 13 can be easily formed by a known gas injection molding.

The mounting leg portion 12 is for mounting the roof rail 10 to the roof portion of the vehicle body, and the rail body portion 1 is provided.
One end is bent continuously and integrally. The mounting leg 12 is formed in a truncated cone shape or a truncated pyramid shape that becomes thicker toward the end as shown in FIG. Or it is a curved surface.

In this embodiment, the vehicle body mounting portion 18 is provided with a mounting hole 14 for fixing the roof rail, and a mounting member (bolt B in this embodiment) is attached to the mounting hole 14 from the rear surface side of the vehicle body roof portion R. The mounting leg 12 is fixed to the vehicle body roof R by inserting and tightening the vehicle body roof R and the mounting leg 12 integrally with the nut N.

The fall prevention member 15 is composed of the mounting leg portion 1 described above.
It is embedded integrally from 2 to the longitudinal direction of the rail body 11. As described above, the fall prevention member 15 prevents the rail body portion 11 from falling off the roof portion of the vehicle body even if a part of the rail body portion 11 is damaged. It consists of a metal filament. In this embodiment, a stainless wire having a diameter of 2 mm (tensile strength 500 kgf) is used as the fall prevention member 15.

As shown in FIG. 1, the fall prevention member 15 is embedded from one mounting leg portion 12 of the roof rail 10 through the rail main body portion 11 to the other mounting leg portion 12. The fall prevention member 15 achieves the intended purpose if it is integrally embedded from the one mounting leg portion 12 of the roof rail 10 to the other mounting leg portion 12 via the rail main body portion 11 as described above. be able to.

This embodiment further has a structure for enhancing safety. That is, as shown in FIG. 3, the fall-prevention member 15 is removed at both ends 16 thereof in the pulling direction of the fall-prevention member 15 to the attachment member B that fixes the roof rail attachment leg 12 to the vehicle body roof R. It is configured so as to be fixed like a stopper. As can be seen from FIGS. 3 and 4, both ends 16 of the drop prevention member 15 made of stainless steel wire are formed in a loop shape as shown in the drawing, and are attached to the attachment portion 18 of the attachment leg portion 12. The holes 14 are integrally embedded so as to surround them. When the roof rail 10 is mounted by the bolt B and the nut N through the mounting hole 14, the loop-shaped end portions 16 of the fall prevention member 15 are attached.
Will be fixed in the pulling direction of the fall prevention member 15 so as not to come off.

When the fall prevention member 15 is made of metal, it may be a pipe-shaped body, a plate-shaped body, or a coil-shaped body in addition to the linear body. (5A) to (5C) of FIG. 5 show another example of the metal fall prevention member, in which the roof rail 10A of (5A) has a pipe-shaped metal fall prevention member 15A embedded therein.
The roof rail 10B of (5B) has a coiled metal fall prevention member 15B embedded therein, and the roof rail 10C of (5C) has a metal fall prevention member 15 made of a plate-like body embedded therein.

The fall prevention member may be made of synthetic resin having high tensile strength, such as polyamide fiber or carbon fiber. FIG. 6 shows an example.
The roof rail 10D of (6A) of FIG. 6 is an example in which a fall preventing member 15D of a synthetic resin filament (rope or bundle) is embedded, and the roof rail 10E of (6B) is a synthetic resin filament or fiber. An example is shown in which a fall prevention member 15E made of a net-like body made by knitting is embedded.

Next, a structure for fixing both ends of the fall prevention member to the mounting member will be described. In FIG. 7, the end portion 16F of the fall prevention member 15F made of a metal wire is bent into a hook shape, and as described above, the end portions 16F are integrally embedded around the attachment holes of the attachment legs, and the fall prevention member 15F is pulled in the pulling direction. This is an example in which the fixing bolt leg B1 can be engaged in a retaining shape.
For convenience of description, the roof rail portion is not shown (the same applies hereinafter). Further, in FIG. 8, a plate-like body 17 also made of metal or the like is welded and fixed to an end portion 16G of a fall prevention member 15G made of a metal linear body, and the plate body 17 is integrally embedded outside the attachment holes of the attachment legs. The front end of the plate-shaped body 17 is engaged with the bolt leg B1 in a pull-out direction in the pulling direction of the fall prevention member 15G.

Further, FIG. 9 shows another example of the roof rail of the present invention. Reference numeral 20 is a roof rail,
21 is a rail body, 22 is a mounting leg, 24 is a mounting hole,
25 is a fall prevention member. The mounting leg portion 22 has a reinforcing plate-like insert 27 embedded inside the vehicle body mounting portion 28. This insert 27 is provided with a hole 29 that matches the mounting hole 24 at a predetermined position thereof. When the roof rail 20 is mounted on the roof R of the vehicle body, the leg B1 of the bolt is attached to the vehicle body as shown in the figure. From the rear surface side of the roof portion R, it is inserted into the mounting hole 24 of the mounting leg portion 22 through the hole 29, and tightened integrally with the nut N. In this example, as can be understood from FIG. 10, the end portion 26 of the fall prevention member 25 made of a metal filament is welded and fixed to the insert 27, and the fall prevention member 25 has a pulling direction. It is fixed in a slip-out manner.

Next, with reference to FIGS. 11 and 12, an example of a method for manufacturing the synthetic resin roof rail for a vehicle of the present invention will be described. The roof rail of the present invention is preferably formed by known injection molding. FIG. 11 shows a molding die 30 for the roof rail 10 shown in FIG.
Reference numeral 32 denotes an upper mold, and the cavity having the outer shape of the roof rail is formed inside by closing the mold.

As is well understood from the view of FIG. 12 (12A), in the lower mold 31, a mounting member (bolt B) is inserted on the mold surface 31a forming the vehicle body mounting portion 18 of the mounting leg portion 12. A convex portion 33 for forming the mounting hole 14 is formed so as to project. Then, the ring-shaped end portion 16 of the fall prevention member 15 is fitted into the convex portion 33.

Further, on the die surface 31b of the lower die 31 on the side forming the back surface of the rail body 11, the fall prevention member 15 is provided.
The holding portion 34 is intermittently provided. In FIG. 12, (1
2B), as shown in the enlarged sectional view of FIG.
Is for ensuring that the fall prevention member 15 is arranged and held at a correct position in the mold so as to be surely buried in the rail body 11, and a groove 35 capable of accommodating the fall prevention member 15 is provided.

Particularly, in a roof rail having a hollow portion 13 inside, the fall prevention member 1 is placed in the hollow portion 13.
When 5 is exposed, the fall prevention member 15 in that part
Since the integral connection between the rail main body portion 11 and the rail main body portion 11 is lowered, it is preferable that the drop prevention member 15 is reliably embedded in the rail main body portion 11 by the intermittently provided holding portions 34.

Then, as shown in FIG. 11, the fall prevention member 15 is previously arranged on the lower mold 31, and then the upper mold 32 is formed.
The mold is closed, and a synthetic resin material P mixed with glass fibers is injected into the mold cavity from a gate (not shown).
If necessary, a gas for forming the hollow portion 13 is injected by a known method. The synthetic resin material P fills the cavity and hardens to form a roof rail having a predetermined shape.
Then, the mold 30 is opened, and the roof rail 10 in which the fall prevention member 15 is integrally embedded is obtained.

The roof rail 1 having the hollow portion 13
In order to obtain 0, it is convenient to use the known gas injection molding as described above. In particular, when a cavity is formed by this gas injection molding, the synthetic resin material P in the mold is forced to flow in the longitudinal direction of the rail main body portion 11 by blowing gas, so that the glass fiber in the synthetic resin material P also The rail body 11 can be densely oriented along the direction to increase the strength of the rail body 11.

[0032]

As shown and described above, the synthetic resin vehicle roof rail of the present invention, which contains glass fibers, has high strength and impact resistance against impact and load. In particular, according to the roof rail structure of the present invention, since the fall prevention member is integrally embedded over the mounting leg portion and the rail main body portion, in an emergency, a part of the rail main body portion is partially Even if it is damaged, the rail body will not be broken by the weight of the luggage on the roof rail and will not drop from the roof of the vehicle body together with the luggage.
It is extremely safe.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a synthetic resin vehicle roof rail of the present invention.

FIG. 2 is a cross-sectional view of the rail main body.

FIG. 3 is an enlarged cross-sectional view of a mounting leg portion showing a state in which the roof rail of FIG. 1 is mounted on a vehicle body roof portion. FIG. 11 is a cross-sectional view of a molding die, and FIG. 12 is an enlarged cross-sectional view showing a state in which a fall prevention member is arranged on the molding die, showing an example of manufacturing a roof rail of the invention.

FIG. 4 is a bottom view of the mounting leg portion viewed from the vehicle body mounting surface side.

FIG. 5 is a perspective view showing an example of a metal fall prevention member.

FIG. 6 is a perspective view showing an example of a synthetic resin fall prevention member.

FIG. 7 is a perspective view showing a structure for fixing a fall prevention member to a mounting member.

FIG. 8 is a perspective view showing another example.

FIG. 9 shows another example of the roof rail of the present invention, and is an enlarged cross-sectional view of a mounting leg portion thereof.

10 is a perspective view of an essential part showing a state in which the fall prevention member of FIG. 9 is fixed to a mounting member.

FIG. 11 is a cross-sectional view of a mold for molding the roof rail of the present invention.

FIG. 12 is an enlarged cross-sectional view showing a state in which a fall prevention member is arranged on the molding die.

FIG. 13 is a perspective view showing an example of a general roof rail.

FIG. 14 is a cross-sectional view of a rail body portion.

[Explanation of symbols]

 10 Roof Rail 11 Rail Main Body 12 Mounting Legs 14 Mounting Holes 15 Fall Prevention Member B Mounting Member (Bolt)

Claims (4)

[Claims] 1. A roof rail integrally formed with a synthetic resin mixed with glass fibers, which has a mounting leg portion to a vehicle body roof portion and a rod-shaped rail main body portion, and a longitudinal direction of the rail main body portion from the mounting leg portion. A structure of a synthetic resin vehicle roof rail, characterized in that a fall prevention member is integrally embedded over the entire length. 2. The synthetic resin vehicle according to claim 1, wherein an end portion of the fall prevention member is fixed to a mounting member of the mounting leg portion in a pull-out direction in a pulling direction of the fall prevention member. Roof rail structure. 3. The structure of a synthetic resin vehicle roof rail according to claim 1, wherein the fall prevention member is a metal filament, a pipe, a coil, or a plate. 4. The structure of a synthetic resin vehicle roof rail according to claim 1, wherein the fall prevention member is made of a synthetic resin filament or net.