JPH068928Y2 - Opening trim - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an opening trim to be mounted on a flange of an opening of a sunroof of an automobile.

[Conventional technology]

Conventionally, the opening trim is attached to the flange of the opening of the sunroof of an automobile to protect the human body from the flange protrusion and to decorate.The insert made of a punched iron plate is made of a thermoplastic resin such as vinyl chloride resin. With a material that is coated with, and if necessary, a fabric is laminated on it, fit it into the flange of the loop-shaped sunroof opening, and make a round around the flange to create a seam at both ends of the material It is constructed by joining. Then, in order to join the joints of the both end portions, the insert is pulled out from the both end portions of the material by a certain length while leaving the thermoplastic resin portion slightly, and the material is preheated to the melting temperature of the thermoplastic resin. It is known that both ends of a material obtained by removing an insert from a heating plate or the like are brought into contact with each other to be heated and melted, and then the both ends are welded to form a loop shape.

[Problems to be solved by the device]

In the opening trim described in the prior art, as a work to remove the insert of a certain length from both ends of the material, you have to use a sharp jig to grasp the slightly exposed part of the insert from each end and pull it out. It is very troublesome. In addition, when welding both ends, both ends warp, resulting in a defective product with a significantly poor appearance of the joint part, especially in the case of laminating fabrics, the fabric of the joint part is ruptured at the time of extracting the insert. There is a problem in that the joints of the fabrics at both ends of the material of the joint portion do not coincide with each other and the appearance is remarkably impaired.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and the joining of the both ends of the opening trim material is performed by a simple process that does not require the removal process of the insert as in the conventional technology. The purpose of the present invention is to provide an opening trim in which the seams of the fabrics at the joints can be performed and which have a good appearance.

[Means for Solving the Problems]

In order to achieve the above object, in the opening trim of the present invention, an opening trim material having a U-shaped cross section in which an insert is covered with a coating layer and a fabric is adhered to the entire outer peripheral surface of the coating layer is used. To form a protruding piece of the fabric, and to form a loop shape in which both ends are opposed to each other with a certain gap, and a thermoplastic synthetic resin is injection-molded in the gap to bond the fabric piece to the thermoplastic synthetic resin. A part was formed, and the both ends were joined by the joining part.

Further, it is effective to attach a piece of fabric to the entire outer peripheral surface of the joint portion.

[Action]

Both ends of the opening trim material are joined by a joint portion made of a thermoplastic synthetic resin having a constant width, and the joint portion is in a state where the protruding pieces of the fabric protruding from the both end portions are entwined with the thermoplastic synthetic resin. Since it is injection-molded, the bonding strength at both ends is increased and accurate formation is possible.

Further, when the fabric piece is attached to the entire outer peripheral surface of the thermoplastic synthetic resin coupling portion, the thermoplastic synthetic resin engaging portion is not exposed.

In the present invention, as the coating layer of the insert, a soft synthetic resin such as soft polyvinyl chloride, vulcanized rubber or thermoplastic rubber can be used.

The thermoplastic synthetic resin for forming the joint includes polyvinyl chloride, polyester, polyethylene, polystyrene or polypropylene.

Further, as the fabric, plain weave, knitting, non-woven fabric, synthetic leather, synthetic resin leather, or the like can be used.

〔Example〕

 Examples will be described with reference to the drawings.

In the embodiment shown in FIGS. 1 and 2, the opening trim is formed as follows. That is, the entire surface of the insert 3 made of a metal plate or the like is coated with a thermoplastic synthetic resin or rubber by extrusion coating or the like to form a coating layer 5, and the fabric 2 is attached to the entire outer peripheral surface of the coating layer 5. An opening trim blank 1 having a U-shaped cross section is formed. And both ends 12,1 of the opening trim material 1
Fabric protrusion pieces 12 and 12 'are formed on 2', respectively, and then both end portions 12a and 12b are formed into a loop shape matching the overall shape of the flange of the sunroof opening facing each other with a constant gap 13. Then, a thermoplastic synthetic resin is injection-molded in the gap 13 to form the joint portion 4 in which the protruding pieces 12a, 12b of the fabric are entangled with the thermoplastic synthetic resin, and the joint portions cause the end portions 12, 12 'to be joined. Are joined together to form the opening trim.

Next, the step of forming the joint portion 4 will be described.

A mold 6 as shown in FIG. 4 is used to injection-mold the joint portion 4. The mold 6 is composed of a fixed mold 8 having a sprue 7 and a movable mold 9, and as shown in FIG.
The opening trim material 1 in which the respective 2b are formed is provided with a gap 13 between these both ends 12, 12 ', and the fixed mold 8
And the movable mold 9 sandwich the vicinity of both ends 12, 12 'of the opening trim material 1, and the gap 1 between the both ends 12, 12'.
3, the cavity 10 by the fixed mold 8 and the movable mold 9
To form. Then, when the molten thermoplastic synthetic resin is injected from the nozzle 11 into the cavity 10 from the sprue 7, the protruding piece 1 formed at the both end portions 12 and 12 '.
A connecting portion 4 as shown in FIG. 1 in which 2a and 12b are entangled in a thermoplastic synthetic resin is formed, and the opening trim material 1 is formed.
Both ends 12, 12 'of the are joined.

The protruding pieces 12a and 12b are fluffy standing portions that are naturally formed by cutting the fabric 2 so that the mesh or texture of the fabric 2 is frayed, and dare to use a special jig or the like. It need not be formed.

Further, in another embodiment shown in FIG. 3, the fabric piece 2'is formed on the entire outer peripheral surface of the connecting portion 4 formed as described above.
Is attached.

As a sticking method, there are known methods such as a double-sided sticking tape, a hot melt adhesive, and an ordinary adhesive.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

In the opening trim according to claim 1, since it is not necessary to remove the inserts at both ends of the opening trim material, the manufacturing process can be shortened, and further, the connecting portion is formed on both ends of the opening trim material. And the thermoplastic synthetic resin are intertwined with each other, the mechanical strength of the joint is increased and an engaging portion having an accurate shape can be obtained.

In the opening trim according to claim 2, in addition to the above-mentioned effect, since the fabric piece is adhered to the entire outer peripheral surface of the joint portion, the thermoplastic synthetic resin of the joint portion is not exposed and the appearance is further improved. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which both ends of an opening trim material in one molding step of the present invention are opposed to each other with a gap. FIG. 3 is a perspective view showing another embodiment of the present invention, and FIG. 4 is a cross-sectional view of a mold for forming a joint portion of the present invention. 1 …… Opening trim material, 2 …… Fabric, 2 ′ …… Fabric piece, 3 …… Insert, 4 …… Coupling part, 5 …… Coating layer, 6 …… Mold, 7 …… Sprue, 8 …… Fixed mold, 9 ... movable mold, 10 ... cavity, 11 ... nozzle, 12, 12 '... end, 12a, 12b ... protruding piece, 13 ... gap.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B29L 31:30 4F

Claims (2)

[Scope of utility model registration request] 1. An opening trim material (1) having a U-shaped cross section in which an insert (3) is covered with a coating layer (5), and a fabric (2) is attached to the entire outer peripheral surface of the coating layer (5). , Fabric protrusion pieces (12a, 12b) on both ends (12, 12 ')
To form a loop shape in which both ends (12, 12 ') face each other with a constant gap (13), and thermoplastic synthetic resin is injection-molded in the gap (13) to protrude the fabric. An opening trim in which (12a, 12b) forms a joint portion (4) entwined with a thermoplastic synthetic resin, and the both end portions (12, 12 ') are joined by the joint portion (4). 2. The opening trim according to claim 1, wherein the fabric piece (2 ') is adhered to the entire outer peripheral surface of the connecting portion (4).