JPS6175039A - Core bar and car inside decorating trim using core bar - Google Patents

Abstract

PURPOSE:To facilitate bending processing extremely in a spacious three dimensional direction and to enable fine finishing by cutting depressed grooves on one side line of a coupling piece connecting segments. CONSTITUTION:A core bar 14 for trim constructed to connect adjacent segments 10 only by two connecting pieces 12, 12 is obtained by forming slits at a predetermined distance at a right angle to the longitudinal direction of a metal plate. And on at least one of the connecting pieces 12, 12 two depressed concave grooves 20 are provided in parallel with the segments so that the adjacent segments are easily broken by a predetermined outer force. Then, the connecting pieces can easily be broken only by applying a required outer force to the core bar after applying synthetic resin coating.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trim core bar that can be easily bent in three-dimensional space, and a vehicle interior trim using the core bar as a core material.

Trim is generally used to finish the interior of vehicles such as automobiles. As shown in FIG. 1, this trim (edging) uses a long metal plate as a base material, and uses a core metal 14 formed by punching slits on this base material as a core material.
The core metal 14 has a structure in which a large number of long strip segments 10 are integrally connected to each other by two connecting pieces 12.12.

As shown in FIG. 2, this core metal 14 is covered with a highly flexible synthetic resin material 16, and then curved so that its cross section becomes U-shaped, resulting in a trim 18 as a final finished product. is now available. This trim 1
8 is used, for example, to fit into a curved partition line between the interior ceiling and side wall of a passenger car by hand bending it according to the curved shape, and to provide edging and other decorative finishing.

By the way, in the conventional trim constructed by coating the core metal 14 used as a core material with resin, each segment 1
0 is firmly connected in the connecting piece 12, so if the trim needs to be bent not only in a plane (two-dimensional) but also in a three-dimensional three-dimensional space, the bending process can be carried out. Moreover, the ends of segment I- often protrude from the resin coating of the trim, which impairs the appearance when finished. That is, in general, in this type of trim, a connecting piece 1 that integrally connects the plurality of segments 10 is used.
Since 2 does not have a structure that is easy to separate, three-dimensional 3
To perform dimensional bending.

At that time, it was necessary to break the connecting piece 12 from each segment 10 by the external force applied, and therefore a large amount of muscle strength was required for the bending operation. Also, due to a large external force, the connecting piece 1
If the segments 2 are broken, the ends of the segments 10 may protrude or crack by breaking through the synthetic resin material 16 covering the core metal, resulting in a disadvantage that the aesthetic appearance during finishing is significantly impaired.

The present invention has been proposed in order to solve the problems inherent in the interior trim parts 1 to rims according to the prior art. The segment is configured to be easily broken in the connecting piece. In addition, the above-mentioned core metal is used for the trim obtained as a finished product, and after coating the core metal with synthetic resin, a predetermined diagonal is added to the core metal, and at least one connecting piece of the core metal is broken (each segment If one side of the row is cut off), bending in a three-dimensional spatial direction can be performed extremely easily, and a beautiful finish can be obtained.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a core metal according to the present invention and a vehicle interior trim using the same will be described in detail below with reference to preferred embodiments and the accompanying drawings.

As shown in FIG. 3, by using a long metal plate as a base material and forming slits at predetermined intervals perpendicular to the longitudinal direction of the metal plate, adjacent segments 10 can be divided into two.
A trim core 14 is obtained which is configured to connect only at two connecting pieces 12.12. In this case, at least one connecting piece 1 of the two connecting pieces 12.12
2 includes each adjacent segment 10 in the connecting piece.
Two recessed grooves 20 are cut in parallel to the segment so that the segment can be easily broken by a predetermined external force. The details of the recessed groove 20 carved in the connecting piece 12 are shown in FIG. 4, which is an enlarged sectional view thereof.

The core bar 14 in which the two recessed grooves 20 are carved in each connecting piece 12 of at least one row has a synthetic resin material attached thereto.
6 is covered, and the external appearance is trim 1 shown in Fig. 2.
A trim similar to 8 is obtained. However, this trim 18
Inside the connecting piece 12 on the side where the recessed groove 20 is carved,
However, it is broken at that part, that is, the adjacent segment group is broken in one row of the adjacent segment group.

In this way, inside the resin coating, each segment 10
FIG. 5 shows the manufacturing process of the 1-rim 18 in which at least one side of the rim 18 is cut off. Note that the states of the core bar 14 and trim 18 in each step are also shown in FIG. 6. As shown in FIGS. 3 and 4, two recessed grooves 2
The core metal 14 with 0 engraved thereon is wound as a roll 22 of a predetermined diameter, is mounted on an uncoiler, and is sequentially passed through an extrusion mold 24.
is sent out towards. In this extrusion mold 24, the core metal 14
is coated with a synthetic resin coating 16 of a required material, and then passed through a water tank 26 to cool the resin coating. However, at this stage and until passing through the next core metal cutting machine 28, the trim consisting of the core metal 14 and the resin coating 16 applied thereto maintains a flat, expanded form.

The resin-coated core metal 14 that has passed through the water tank 26 is fed to a cutting machine 28 shown in the figure, and the connecting pieces 12 on one side of the core metal 14 are separated and separated in the recessed groove 20. As shown in FIG. 7, the core metal cutting machine 28 is equipped with a pair of upper and lower tapered rolls 30°30.
A portion of the resin-coated core metal 14 corresponding to the portion where the recessed groove 20 is formed is rolled down from the outside. By adding the reduction blade to the resin coating 16 in this way,
The synthetic resin material that has lost its place concentrates in the recessed groove 20 carved in the connecting piece 12, and the reduction blade is converted into an expanding force in the direction of feeding the core metal. Therefore, the core bar 14 breaks at the location where the recessed groove 20 is formed in the connecting piece 12, and each segment 10 is separated from the connecting piece 12 in one row while still being covered with the synthetic resin material 16. Become.

The flat trim 18 that has passed through the tapered rolls 30, 30 has a tendency to curl on one side toward the uncut side of the connecting piece 12, so the guide 30 disposed on the downstream side
2, and then fed to a bending roll 34 to form a curve into a U-shaped cross section.

The trim 18 is cut into a required length by a cutting machine 36 to obtain the trim 18 as a final product.

As described above, according to the present invention, since the trim core bar itself has recessed grooves carved in at least one row of the connecting pieces that connect each segment, the core bar itself is coated with a synthetic resin. The connecting pieces are easily broken by simply applying the required external force afterwards. Therefore, the trim as a completed product has one row of connecting pieces broken within the resin coating, so 3.
Bending in the dimensional direction becomes extremely easy. Furthermore, since no unreasonable force is applied during bending, the ends of the segments will not break through the resin coating. In this example,
Although we have described a structure in which only one row of connecting pieces is separated, there is also a structure in which one row of connecting pieces on both sides is simultaneously separated by carving recessed grooves 20 in both of the two connecting pieces of the core bar. It can also be used as a trim.

[Brief explanation of drawings]

FIG. 1 is a plan view of a conventional trim core metal, FIG. 2 is an external perspective view of the trim, FIG. 3 is a plan view of a core metal according to the present invention, and FIG. 4 is a view of the core metal shown in FIG. 3. An enlarged view of the vertical section taken along the line A-A, Figure 5 is a schematic diagram of the trim manufacturing process, Figure 6 is an explanatory diagram of the shape of the core metal and trim corresponding to each process in Figure 5, and Figure 7 is an illustration of the core metal. FIG. 2 is a schematic structural diagram of a hemisection machine and a guide. 10...Segment 12...Connection piece 14
... Core metal 20 ... Recessed groove FIG, 1 FIG, 2 FIG, 3 FIG, 4

Claims (2)

[Claims] (1) By using a long metal plate as a base material and forming a large number of slits at predetermined intervals perpendicular to the longitudinal direction of the metal plate, each adjacent segment is connected only at two connecting pieces. A core metal for trim configured,
The method is characterized in that two recessed grooves are carved in at least one of the two connecting pieces in parallel with the segments so that the adjacent segments of the connecting piece can be easily broken by a predetermined external force. Core metal. (2) A long metal plate is used as a base material, and a large number of slits are formed at predetermined intervals at right angles to the longitudinal direction of the metal plate, so that adjacent segments are connected only at two connecting pieces. , at least one of the two connecting pieces,
A core metal for trim in which two recessed grooves are carved parallel to the segments so that adjacent segments of the connecting piece can be easily broken by a predetermined external force, and the core metal is made of a required synthetic resin. A trim for a vehicle interior, characterized in that the connecting piece in the synthetic resin coating is broken at a recessed groove.