JP2805624B2 - Locking clips for automotive window moldings - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking clip for fastening a window molding mounted along an edge of an opening of a glass fitted into a window of an automobile.

2. Description of the Related Art In general, a molding is mounted on a glass fitted to a front and a rear window of an automobile so as to cover a gap with a window opening while fixing the glass. In recent years, plastic moldings are often used instead of conventional metal moldings.However, when attaching plastic moldings, they are fixed to the window openings by themselves. There are two types, one is to stop via a retaining clip previously attached to the window opening.

The present invention relates to an improvement in the latter type of molding clip, and more particularly to an improvement in an extrusion clip extruded from a nylon resin material.

As is well known, window moldings are exposed to natural conditions and are sometimes stretched due to thermal expansion under high temperatures, which can cause wrinkles on the exposed surface and undulation and impair the appearance. A similar phenomenon may occur in a locking clip formed of a resin material, and the appearance of an exposed portion may be impaired.

Conventionally, for the purpose of solving such a phenomenon, a technique of inserting a metal core material for suppressing elongation due to thermal expansion into a molding has been known, for example, from JP-A-63-68421.

The insert of the metal core material is intended to suppress the expansion and contraction of the molding itself due to the difference in the coefficient of thermal expansion. However, since the integration between the materials is poor, special processing is performed on the core material itself as described in the above-mentioned publication. Need to be applied. However, the metal core material is effective in suppressing expansion and contraction of the molding body, but originally lacks flexibility. Therefore, when this is used for the locking clip, the curved surface of the window opening, particularly the corner portion, is used. When it is provided along the bent surface, there is a problem that the adhesion is poor and the stability of fixation is also poor.

In addition, this kind of locking clip usually has a main body
Since it is 1 mm or less, inserting a metal core material causes problems such as molding distortion, and is not practical. In particular, when inserting a metal core at the same time as extrusion molding of molten nylon resin, the resin flow is disturbed and molding distortion occurs, while the shape after molding appears,
Metals have a problem that they adversely affect the main body because of their large linear expansion coefficient.

[Problems to be Solved by the Invention] The present invention has been researched and developed in order to solve the above-mentioned defects caused by inserting the conventional metal core material, and in particular, in the present invention, nylon resin is used as a material. In the molded retaining clip, it is bent like a corner of a window opening, for example, without compromising the flexibility of the material as a molded product along with the elimination of molding distortion due to the insertion of the core material during extrusion molding. A locking clip for a window molding of an automobile, which can be easily fixed to a curved surface portion, and can effectively suppress expansion and contraction when the main body of the clip is heated and thermally expanded and contracted. Is to be provided.

[Means for Solving the Problems] That is, according to the present invention, a glass fiber core material is used in place of a metal core material based on the above-described object, and the characteristics of the material are used to suppress expansion and contraction of a clip main body and to wrinkle. It is an object of the present invention to provide a locking clip that prevents the occurrence of undulations and, at the same time, follows the flexibility of the main body of the clip so as to bend smoothly even on a curved surface such as a corner portion and ensure the adhesion.

At the same time, the present invention provides that the main body of the glass fiber is extruded in a strip shape along with the uniform thin portion of the main body in which the clip main body is formed of a nylon resin in the length direction thereof. An object of the present invention is to provide a locking clip that can be integrally embedded at a predetermined position without causing molding distortion by insert molding at the same time.

The metal core material that has been buried in the past to prevent expansion and contraction has the required rigidity itself, so when extruding the main clip into a synthetic resin material, the embedding position is formed even when insert molding is performed at the same time. Although fixed at a fixed position, the glass fiber core material employed in the present invention is easily affected by internal stress during extrusion molding of the synthetic resin due to its flexibility and flexibility. In particular, the extended base end or bent portion of the locking ridge that becomes thicker in cross section, a portion that becomes a boundary portion between the synthetic resin and the hard resin has a high internal pressure during molding, and a low portion from these portions, that is, The resin moves to the thin part. Therefore, when the resin is inserted along the thick portion and the bent portion, the insert position of the core material shifts with the movement of the resin.

According to the present invention, the core material is inserted along the thin portion of the clip main body formed correspondingly and the portion where the internal stress is stable where the wall thickness is uniform, thereby extending the longitudinal direction of the clip main body. And allows for straight burial.

If the present invention is described in more detail, the present invention extrudes a main body of a clip into a strip shape from a nylon resin, and has a locking ridge or a locking piece of a molding on one surface over the entire length in the longitudinal direction. In the locking clip for a window molding of an automobile formed, a portion where the locking ridge or locking ridge of the clip is extended, or a bent portion, a thick portion or a soft portion of the main body. A thin-walled portion that avoids the boundary of the hard resin and has a uniform thickness, and a glass-fiber expansion-prevention core material is embedded along the entire length in the longitudinal direction. The present invention provides a locking clip for a molding for a window of an automobile, characterized by the following.

[Operation] As described above, according to the present invention, the thermal expansion of the clip main body is suppressed because the glass fiber core material is inserted into the main body of the clip over the entire length thereof, whereby wrinkles and undulations are formed on the exposed portion. While the occurrence of cracks is prevented, the core material has flexibility, so that the clip can be securely attached to the bent portion where the flexibility is required, and the internal stress is low during molding of the clip. Since it is inserted at a stable position of the clip, it is not buried in an undulating state inside, so that the length of the clip coincides with the length of the clip main body and expansion and contraction thereof is suppressed.

And the core material made of glass fiber consists of a bundle of long fibers,
Since the individual fibers and the main nylon resin adhere to each other and are integrated, there is no deviation between the materials.

The invention will now be described in more detail with reference to an illustrated embodiment.

[Embodiment] FIGS. 1 to 3 show an example in which the present invention is applied to a locking clip formed in a strip shape. The clip main body 1 is made of a flexible nylon resin as a thin strip shape. And both edges 1a and 1b are gently bent so as to be along the inner and outer bent surfaces 3a and 3b of the upright wall portion 3 of the window opening 2 of the automobile, which will be described later. Locking ridges 5 for locking are provided at intervals of a plurality of ridges so as to protrude over the entire length. A glass fiber core material 6 is buried in the flat portion of the main body having a uniform thickness over the entire length.

In this embodiment, the core material 6 is disposed so as to be buried one by one in a substantially intermediate portion thereof, avoiding the base end portion where the locking ridge 5 protrudes. The core material is limited to a thickness that does not exceed the thickness of the embedding position of the main body, but it is appropriate that a number of glass fiber long fibers are aligned. There is, and by inserting this at the same time as the extrusion molding of the main body, the long fibers are integrated, and high adhesion between the clip main body and the core material can be obtained.

As shown in FIGS. 2 and 3, the locking clip formed in this manner first coats the window opening 2 of the automobile with the upright wall 3 before the glass 7 is fastened. Adhesive fixing is performed via an adhesive 8. Next, the periphery of the glass to be fitted into the window opening is adhered by an adhesive 10 applied to the upper surface of the edge 9 of the opening, and the molding 4 is formed along the periphery of the glass before the adhesive 10 solidifies. Insert the leg 4a, press the leg end into the adhesive 10, hook the locking piece 4b extending from this leg on the lower surface of the peripheral edge of the glass, and also fix the other locking piece 4c. The molding is mounted by being hooked on the locking ridge 5 of the locking clip 1.

FIG. 4 to FIG. 6 show another example of a locking clip of another type in which a molding is fastened to a locking clip via a locking piece. Instead of the ridge 5, a locking projection 11 is integrally extended so as to be folded back from one edge (lower edge) of the locking clip main body 1 formed of a strip of nylon resin as a material.
This is a case where the cross section is formed in a substantially J shape.

In this embodiment, a glass fiber core material 6 is buried in the main body 1 over its entire length in a flat portion having a uniform thickness and avoiding a bent portion.

In use, this locking clip is first adhered and fixed to the upright wall portion 3 of the window opening through the adhesive 8 as described in the above embodiment. Next, the peripheral portion of the glass 4 to be fitted into the window opening is adhesively fixed by using an adhesive 10 applied to the edge 9 of the window opening, and after fixing the glass, the molding 12 having a c-shaped cross section is fixed. Locking piece 13 from below
Are fitted and fixed together, so that the locking legs 13a hang down at an appropriate interval from the lower surface of the molding, and then each locking leg 13a is attached from above the locking clip. The molding is mounted by interposing between the locking projections 11 and interlocking the claws provided thereon.

[Effect of the Invention] As described in the above embodiment, the normal locking clip is fixed along the window opening, and is exposed to high temperature such as receiving direct sunlight and can be expanded by thermal expansion. However, according to the present invention, since the glass fiber core material having a small coefficient of thermal expansion is buried inside the main body of the clip over the entire length, the elongation of the main body of the clip alone is suppressed, and therefore, it is exposed at a high temperature. It is effectively avoided that the appearance is impaired, such as wrinkling or waving of the surface portion, and furthermore, peeling off from the window opening and floating.

The embedded glass fiber core material is excellent in flexibility and flexibility, so that the flexibility of the nylon resin mainly composed of clips is not impaired, so that it is possible to work without difficulty even when fastening to a bent surface portion such as a corner portion. There is an advantage that the stability after fastening is excellent.

Further, since the glass fiber of the core material has a low elongation and a high tensile strength, it is set to have a fineness corresponding to the embedding in a locking clip generally formed to a thickness of 1 mm or less. While it is possible to exhibit a sufficient expansion / contraction prevention function, in the present invention, in particular, the glass fiber core material is embedded along a thin portion having a small internal stress at the time of extension molding and along a flat uniform thin portion. As a result, the core material is buried straight along the length of the main body without waving due to the movement of the resin inside the clip main body. It has an action of suppressing expansion and contraction, and can effectively prevent undulation and waving of the clip due to thermal expansion and contraction.

Further, since the core material can be buried straight along the length direction of the main body, there is an advantage that the moldability is excellent.

[Brief description of the drawings]

FIG. 1 is a side view of a locking clip according to the present invention, FIG. 2 is an exploded perspective view illustrating the use of the locking clip in the upper view, FIG. 3 is a longitudinal sectional view in a used state, and FIG. FIG. 5 is an exploded perspective view illustrating the use of the above-described locking clip, and FIG. 6 is a longitudinal sectional view of the same using state, showing another embodiment. DESCRIPTION OF SYMBOLS 1 ... Clip main body 4 ... Molding 5 ... Locking ridge, 6 ... Core 11 ... Locking piece

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60J 1/02 F16B 5/12

Claims (1)

(57) [Claims] 1. A clip mainly made of nylon resin (1)
Of a molding for a window of an automobile having a locking strip (5) or a locking piece (11) of a molding (4) formed on one surface thereof over the entire length in the longitudinal direction. In the stop clip, a portion of the clip main body (1) where the locking protrusion (5) or the locking protrusion (11) is extended, or a bent portion, a thick portion, or a soft portion of the main body (1). A core member (6) made of glass fiber for preventing expansion and contraction is laid along the longitudinal direction in a thin portion where the boundary portion between the resin and the hard resin is avoided and in a portion having a uniform thickness. A locking clip for a window molding of an automobile, characterized in that: