JPH10258690A - Core material for trimming - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable deformation in accordance with a shape of an installation portion by installing a linear standard wire roughly on a central part in the cross direction of a belt type main wire bent in zigzag and installing an auxiliary wire on both side parts in the cross direction of the main wire by bending it in zigzag and in parallel with the standard wire. SOLUTION: A main wire 12 extends in the longitudinal direction while alternately forming curved parts 12a overhanging in the cross direction on both sides of a standard wire linearly extended in a state of deflecting to partition the whole width of a core material 10. The standard wire 14 is orthogonal with a rectilinear part extending in the cross direction of the main wire 12 and is welded and fixed on the main wire 12 at an intersection part. An auxiliary wire 16 extends in the longitudinal direction in a deflected state in specified ranges on both side parts of the main wire 12 separated from the standard wire 14 in the cross direction. Each of the auxiliary wires 16 is formed by continuously and alternately forming curved parts 16a alternately overhanging and short rectilinear parts, and the rectilinear parts are welded and fixed on the main wire 12 at the intersection part orthogonal with the rectilinear part of the main wire 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to protection, decoration, and the like for a flange portion such as a panel fitting portion or an edge portion of an automobile.
The present invention relates to a core material embedded for the purpose of sealing or embedded inside a trim used as a mounting base of a weather strip mounted on an opening of a trunk lid, a door side, a sunroof, or the like.

[0002]

2. Description of the Related Art A core buried in a long trim having a substantially U-shaped cross section needs to be deformed in accordance with the shape of a trim mounting portion. A plate-shaped metal plate is punched out with a mold to form a plurality of openings, or a long metal plate with slits extending in the width direction is formed in two positions in the width direction using a roll or the like in the longitudinal direction. Rolling is known in which an opening is formed in a slit portion (see JP-A-60-215447).

[0003] Japanese Patent Publication No. 63-33453 discloses a core material in which a wire is bent in a zigzag shape to form a band shape, and strands are woven in a band shape at a center portion and both side portions in a width direction thereof. I have.

[0004]

In the case of using a metal plate as in the former, the deformability is low because the skeleton portion other than the opening is large, and therefore, the trim in which this core material is embedded has the shape of the mounting portion. However, there is a problem that it cannot be deformed satisfactorily in accordance with the following.

[0005] In the latter case, a core material using a strand improves the deformability. On the other hand, when the core material is bent into a substantially U-shaped cross section using a roller, the strand may be cut. is there. When the strand is cut in this way, the rigidity of the core material in the longitudinal direction is reduced, so that when the trim in which the core material is embedded is attached to the vehicle body, the trim is extremely easily stretched, that is, in the longitudinal direction. Since the mounting length of the trim is not stable, there is a problem that the trim after mounting is lifted. In addition, since such a core material is knitted with strands, the manufacturing process becomes complicated, and the product price increases.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a core material embedded in a long trim having a substantially U-shaped cross section, comprising: a strip-shaped main wire bent in a zigzag shape; A linear reference wire attached to a substantially central portion in the width direction of the main wire, and both sides in the width direction of the main wire were attached in parallel to the reference wire in a zigzag shape. And an auxiliary wire.

In the core material having such a configuration, the main wire and the auxiliary wire formed in a zigzag shape expand and contract, so that the trim in which the core material is embedded has flexibility that can follow the shape of the mounting portion. It will be.

Further, since the reference wire is linearly attached to the central portion of the main wire, the reference wire has appropriate rigidity in the longitudinal direction. However, since the reference wire does not substantially expand, the attachment length is stabilized.

Further, it is more preferable that the main wire and the auxiliary wire are bent at the same pitch as in claim 2, since the flexibility of the core material in the longitudinal direction is made uniform.

[0010]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 2 shows a core material 10 according to an embodiment of the present invention.
FIG. 4 is a plan view showing a single unit. The core material 10 is embedded in a long trim 20 having a substantially U-shaped cross section as shown in FIG. 1, and includes a main wire 12 made of a strip-shaped metal wire bent in a zigzag shape. A metal reference wire 14 attached along a substantially central portion of the main wire 12 in the width direction, and on both sides of the main wire 12 in the width direction,
Two metal auxiliary wires 16 attached in parallel with the reference wire 14 in a zigzag shape
To form a band.

The main wire 12 is bent so as to define the entire width of the core member 10, and extends linearly with the reference wire 14.
And extending in the longitudinal direction while alternately forming curved portions 12a that protrude in the width direction on both sides. The reference wire 14 is orthogonal to the linear portion 12b extending in the width direction of the main wire 12, and is fixed to the main wire 12 by welding at an intersection A thereof.

The auxiliary wire 16 is provided in a predetermined region on both sides of the main wire 12 spaced apart from the reference wire 14 in the width direction.
It extends in the longitudinal direction in a bent state. Each auxiliary wire 16
Is formed by alternately and continuously forming curved portions 16a that alternately protrude on both sides in the width direction and short linear portions 16b extending in the longitudinal direction, and the linear portions 16b are orthogonal to the linear portions 12b of the main wire 12. At the intersection B, which is welded and fixed to the main wire 12.

Here, the main wire 12 and the auxiliary wire 16 have the same pitch in the longitudinal direction so that the flexibility of the core material 10 in the longitudinal direction is uniform. , 16a are juxtaposed at the same pitch.

For example, the core material 10 is formed by holding the reference wire 14 and the auxiliary wire 16 at predetermined positions on the main wire 12 and holding them at respective intersections A by resistance welding using a pair of electrode rollers. , B can be easily manufactured by continuously joining them.

Such a core material 10 is coated with a synthetic resin material by a well-known extrusion molding method to manufacture a trim 20 as shown in FIG. That is, the core material 10 sent from the upstream side to the downstream side at a constant speed is bent into a substantially U-shape, the core material 10 is coated on the downstream side with the synthetic resin material, and further cooled, bent, and cooled on the downstream side. Trim 20 through appropriate steps such as cutting
Is manufactured.

At the time of this extrusion, the core material 10 is pulled at a constant speed. In this embodiment, since the linear reference wire 14 functions as a take-up core wire, the main wire 12 and the auxiliary wire 16 are pulled by the pulling force. They will not be stretched or deformed.

The trim 20 thus manufactured is
As shown in FIG. 1, it is formed in a substantially U-shaped cross section having a base portion 22 and a pair of side wall portions 24 facing each other, and a total of four flange holding lips 26 project from the inner surface of the channel. Here, in the core material 10, the main wire 12 extends over both side wall portions 24 and the base portion 22, the reference wire 14 is located inside the base portion 22, and the auxiliary wire 16 is connected to the side wall portion 2.
4 is located.

As shown in FIGS. 3 and 4, such a trim 20 is fitted to a flange portion such as a panel fitting portion or an edge portion of an automobile for protection, decoration, and sealing.

FIG. 3 shows a state in which the trim 20 is mounted on the inner peripheral flange 30 having the distal end edge 30a located on the inner peripheral side in a state of being opened on the outer peripheral side. Here, at the corner 31 of the curved inner peripheral flange 30, both sides of the main wire 12 located on the outer peripheral side and the auxiliary wire 16 are deformed so as to extend in the longitudinal direction. In other words, the curved portions 12a of the adjacent main wires 12 are separated from each other, and the auxiliary wire 16 has its curved portion 16a extended substantially linearly. As a result, the trim 20 is curved along the corner 31 so that the side walls 24 are stretched and deformed, and attached along the inner peripheral flange 30.

Here, the base 22 side of the trim 20 in which the substantially linear reference wire 14 is embedded has a suitable rigidity in the longitudinal direction, and can be easily stretched even when a tensile load is applied during mounting. Since the corners 31 are curved without being stretched substantially at the corners 31, the trim length of the trim 20 is stabilized, and the trim after mounting does not rise.

FIG. 4 shows a mode in which the trim 20 is attached to the outer peripheral flange 32 with the leading edge 32a located on the outer peripheral side in a state where the trim 20 is opened on the inner peripheral side. Here, in the curved corner portion 33, both side portions of the main wire 12 located on the inner peripheral side and the auxiliary wire 16 bend and deform so as to shrink in the longitudinal direction. That is, the curved portion 12 of the adjacent main wire 12
a bend greatly while approaching each other, and the curved portion 16a of the auxiliary wire 16 bends further. As a result, trim 20
In the corner portion 33, the side wall portions 24 are curved so as to be contracted and deformed, and are favorably attached along the outer peripheral flange 32.

Here, since the base 22 side of the trim 20 located on the outer peripheral side is not stretched as in the case of FIG. 3, the mounting length of the trim 20 is stabilized, and the corner is raised. There is no fear.

The core member 10 of the present embodiment is constituted by only the wires 12, 14, and 16 made of metal, as compared with the above-described conventional example in which the strand is woven into a wire. Is simplified, and since there is no need to knit the strands, the production is easy and the cost is low. In addition, the quality is stable because the strand is not broken at the time of manufacturing unlike a strand.

[0025]

According to the present invention, the main wire and the auxiliary wire of the zigzag core can be expanded and contracted, so that the trim in which the core is embedded follows the shape of the mounting portion. It has flexibility that can be used.

Further, the core material of the present invention has an appropriate rigidity in the longitudinal direction since a linear reference wire is attached along a substantially central portion of the main wire. Therefore,
In a trim in which such a core material is embedded, even if a tensile load is applied at the time of attachment, the reference wire does not substantially expand, so that the attachment length is stabilized.

For example, when the core material of the present invention is compared with a core material in which strands are knitted as in a conventional example, the core material of the present invention is easy and inexpensive to manufacture because there is no need to knit strands. Since the strands do not break during manufacturing, the quality of the product is stable, and the strength is excellent because the reference wire and the auxiliary wire are attached to the main wire.

[Brief description of the drawings]

FIG. 1 is a cutaway perspective view of a trim in which a core material according to an embodiment of the present invention is embedded.

FIG. 2 is a plan view showing a single core material of the embodiment.

FIG. 3 is a side view when the trim of FIG. 1 is attached to an inner peripheral flange.

FIG. 4 is a side view when the trim of FIG. 1 is attached to an outer peripheral flange.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Core material 12 ... Main wire 14 ... Reference wire 16 ... Auxiliary wire 20 ... Trim

Claims (2)

[Claims] 1. A core material buried in a long trim having a substantially U-shaped cross section, which is attached to a band-shaped main wire bent in a zigzag shape and to a substantially central portion in a width direction of the main wire. A trimmed linear reference wire, and auxiliary wires attached in parallel with the reference wire in a state of being bent in a zigzag manner on both sides in the width direction of the main wire. Core material. 2. The main wire and the auxiliary wire are bent at the same pitch in the longitudinal direction.
The core material for trim according to 1.