JPH10305729A - Core member of opening trim for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an opening trim from twisting by a bent molding and make the opening trim look more attractive by arranging a plurality of constitution pieces side by side at prescribed intervals in the longitudinal direction of the opening trim and arranging two connecting parts connecting these constitution pieces at a location symmetrical to the width direction center of a core member. SOLUTION: A core member 16 is constituted of a plurality of strip-like constitution pieces 18 which are arranged side by side at prescribed intervals in the longitudinal direction of an opening trim 10 by performing a punch molding for punching metal of a fixed width which has a symmetrical punching pattern and two connecting parts 20, 20 which connect the plurarity of constitution pieces 18 and extend in the longitudinal direction. The two connecting parts 20, 20 connecting the plurality of constitution pieces 18 are arranged at a location symmetrical to the width direction center (m) of the core member 16 and distances a1, a2 up to the free ends from the connecting parts 20, 20 at both the end parts of each constitution piece 18 are equalized. Thus, the opening trim 10 does not spirally twist and is made to look more attractive when a mounting base part 12 is bent and mold at the time of an extrusion molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core material embedded in a mounting base for reinforcing an opening trim attached to an opening edge of a vehicle body such as an automobile door opening.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional automobile opening trim. The opening trim 100 shown in FIG.
1 includes a mounting base 101 having a substantially U-shaped cross section, and a hollow seal portion 102 bulging from the mounting base 101 and abutting against a sash 113 of a door edge 112. A core member 103 for reinforcement is embedded in the mounting base 101.

As shown in FIG. 6, the core member 103 is usually formed by punching and forming a metal plate having a constant width to form a plurality of components arranged at predetermined intervals in the longitudinal direction of the opening trim 100. Piece 104 and the plurality of constituent pieces 1
And a connecting portion 105 for connecting the first and second components 04. Then, at the time of extrusion molding of the opening trim 100, this punched and molded flat state is buried in the mounting base 101 and extruded, and then, sequentially bent along the longitudinal direction of the opening trim 100 into a substantially U-shaped cross section. Is done.

Conventionally, as the core member 103, as shown in FIG. 6, a plurality of component pieces 104 are connected by two connecting portions 105, extending along the longitudinal direction of the opening trim 100.
The two connecting portions 105, 105 are arranged asymmetrically with respect to the center m in the width direction of the core member 103, that is, arranged at positions deviated from each other.

[0005]

However, when the connecting portion 105 is made asymmetrical with respect to the center m in the width direction of the core member 103 as described above, the respective connecting portions 105a and 105b of each of the component pieces 104 are connected to the respective connecting portions 105a and 105b. Since the distances b1 and b2 to the free ends are different (b1> b2), the end interval c between the adjacent component pieces 104 is likely to increase on the side of the long connecting portion 105a at the time of the above-described bending. Therefore, by such bending, the connecting portion 105 having the long distance is used.
There is a problem that the a side extends toward the short connecting portion 105b side, whereby the opening trim 100 is easily twisted in a spiral shape.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a core material for an automobile opening trim which can provide a good-looking opening trim without being twisted by bending.

[0007]

SUMMARY OF THE INVENTION A core material of an opening trim for an automobile according to the present invention is embedded in the opening trim having an attachment base having a substantially U-shaped cross section which is attached to an opening edge of a vehicle body of an automobile. The reinforcing core material includes a plurality of component pieces arranged side by side at predetermined intervals in a longitudinal direction of the opening trim, and two connecting portions connecting the plurality of component pieces. It is characterized in that the connecting portions of the book are arranged symmetrically with respect to the center in the width direction of the core material.

As described above, if the two connecting portions for connecting a plurality of component pieces are arranged at symmetrical positions with respect to the center in the width direction of the core material, the distance from the connecting portion at both ends of each component piece to the free end is obtained. Since the distances can be equalized, it is possible to prevent the core material from being twisted when bent into a substantially U-shaped cross section.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a core material 16 according to the present embodiment, FIG. 2 is a cross-sectional view of an automobile opening trim 10 including the core material 16, and FIG.
FIG. 7 is a cross-sectional view showing a vehicle mounting state of No. 0; Here, FIG.
3 shows a cross section (XX cross section in FIG. 4) of the roof side portion of the automobile 1 shown in FIG.

As shown in FIG. 3, the opening trim 1
Numeral 0 is attached to the vehicle body opening edge 2 and abuts against the sash 5 at the door 3 edge to seal between the vehicle body opening edge 2 and the door 3 edge. And is disposed inside the door weather strip 6 for sealing between the door weather strip 6 and the vehicle body opening edge 2.

The opening trim 10 is a mounting base 12 made of solid rubber having a substantially U-shaped cross section and fitted to a body flange 2a provided at the opening edge 2 of the vehicle body.
And a hollow seal portion 14 made of sponge rubber which swells from the vehicle outer wall portion 12 a of the mounting base portion 12 and abuts on the sash 5. A core material (insert metal) 16 is embedded in the mounting base 12.

The core 16 is disposed over substantially the entire mounting base 12 having a substantially U-shaped cross section.
Is bent and formed into a substantially U-shaped cross section. The core 16 is formed of a punching metal having a symmetrical punching pattern shown in FIG. That is, the core member 16 is formed by stamping and forming a metal plate having a constant width, thereby forming a plurality of strip-shaped component pieces 18 arranged side by side at predetermined intervals in the longitudinal direction of the opening trim 10, And two connecting portions 20 extending in the longitudinal direction for connecting the pieces 18. The two connecting portions 20 are arranged symmetrically with respect to the center m in the width direction of the core 16. Thereby, in each component piece 18, the distances a1 and a2 from the left and right connecting portions 20 and 20 at both ends thereof to the respective free ends are equal (a1 = a2). Here, the left and right connecting portions 20 and 2
0 is formed with the same width. Also, the connecting portion 20
Are arranged at both ends in the width direction of the core material 16.

The core material 16 having such a shape is fed into an extruder (not shown) in a flat state, extruded while being embedded in the mounting base 12, and after vulcanization, together with the mounting base 12, The opening trim 10 is sequentially bent along the longitudinal direction into the above-described substantially U-shaped section.

As a result, as shown in FIG.
One of the connecting portions 20 is a vehicle outer wall portion 12 of the mounting base 12.
a, and the other connecting portion 20 is disposed on the inner side wall portion 12 b of the mounting base 12. After the above bending,
A predetermined bending stress may be applied to the mounting base 12 of the opening trim 10 to cut the two connecting portions 20, thereby separating the plurality of component pieces 18 from each other. When cutting the connecting portion 20 in this way, it is preferable to set the width of the connecting portion 20 so that the connecting portion 20 is easily cut by the bending stress.

Reference numeral 22 denotes a holding lip provided on the inner side surface of the mounting base 12 for holding the body flange 2a, and reference numeral 24 denotes a projection protruding from the mounting base 12 to the inside of the vehicle and the ceiling lip 7 in the room. The inner lip to be contacted is denoted by reference numeral 26.
Is a body contact lip protruding from the front end of the outer side wall portion 12a of the mounting base portion 12 and abutting against the body surface 2b of the vehicle body opening edge portion 2.
2, the decorative portions provided inside the vehicle are shown.

The hollow seal portion 14 of the opening trim 10 has a support wall portion 14b on the outside of the vehicle formed of solid rubber in order to increase the rigidity of the outside of the vehicle and prevent interference with the door weather strip 6. It is formed with higher rigidity than the contact portion 14a made of sponge rubber.
Further, in order to suppress an increase in the closing load of the door 3 due to the high rigidity of the support wall 14b on the outside of the vehicle, the support wall 14b on the outside of the vehicle 3 It is formed lying on the outside of the vehicle so as to incline in a direction substantially perpendicular to the vehicle.

Further, to improve the appearance from the room,
A high-rigidity portion made of solid rubber is also formed on the support wall portion 14c on the vehicle interior side in a range in which the closing load of the door 3 is not increased.

In the case of the core member 16 of the opening trim 10 of the present embodiment, the two connecting portions 20 for connecting the plurality of constituent pieces 18 are arranged at symmetrical positions with respect to the center m in the width direction of the core member 16. Since the distances a1 and a2 from the connecting portions 20 and 20 to the free ends at both ends of each component piece 18 are made equal to each other, opening and closing of the mounting base 12 at the time of extrusion molding is performed. The trim 10 is not twisted spirally. For this reason, the opening trim 10 without twisting and having a good appearance can be obtained.

In the above description, the case where the core material 16 is extruded together with the mounting base 12 in a flat state and then bent and formed is described. However, the core material 16 is previously bent and formed into a substantially U-shaped cross section. Then, it may be extruded together with the mounting base 12. Also in this case, the core 1
The opening trim 10 having a good appearance can be obtained without twisting the spiral 6 in a spiral shape.

[0021]

According to the core material of the automotive opening trim of the present invention, two connecting portions for connecting a plurality of component pieces are arranged symmetrically with respect to the center in the width direction of the core material without deviation. By doing so, it is possible to prevent torsion when bending and forming the section into a substantially U-shape, and to obtain a good-looking opening trim.

[Brief description of the drawings]

FIG. 1 is a plan view of a core material 16 of an automotive opening trim 10 according to one embodiment of the present invention.

FIG. 2 is a sectional view of the opening trim 10;

FIG. 3 is a cross-sectional view showing a state in which the opening trim 10 is mounted on a vehicle.

FIG. 4 is a side view of the automobile.

FIG. 5 is a cross-sectional view showing a state where a conventional opening trim is mounted on a vehicle.

FIG. 6 is a plan view of a core material of a conventional opening trim.

[Explanation of symbols]

 2 ... body opening edge 10 ... opening trim 12 ... mounting base 16 ... core material 18 ... constituent piece 20 ... connecting part m ... width center of core material 16

Claims (1)

[Claims] 1. A reinforcing core material embedded in an opening trim having an attachment base having a substantially U-shaped cross section and attached to an opening edge of a vehicle body of an automobile, the reinforcing core being provided in a longitudinal direction of the opening trim. And a plurality of connecting parts for connecting the plurality of constituent parts, and the two connecting parts are symmetrically positioned with respect to the center in the width direction of the core material. A core material for an opening trim for an automobile, wherein the core material is arranged in a vehicle.