JP2544645Y2 - Locking clips for automotive window moldings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a molding that is mounted along an opening edge of a window of an automobile and is mounted along a peripheral edge of glass fitted into the window. The present invention relates to a locking clip for a window molding used for fastening to a window.

[Prior art and its problems] In a molding for decorating the state of fit of glass to be fitted into a window of an automobile, particularly for a molding extruded from a synthetic resin material, the window has an opening edge and a peripheral edge of the glass fitted into the opening. There are two types, one that is used alone by inserting it into the window and the other that is fastened through a locking clip that is fixed to the edge of the window opening in advance. The present invention relates to an improvement of a locking clip of a molding according to the present invention.

The locking clip is generally formed by extruding nylon resin into the material.When using this, cut it to a predetermined length in advance according to the length of the opening edge of the window to be used. Usually, it is usually fixed along the opening edge of the window using a double-sided adhesive tape or the like. However, the extruded locking clip changes its dimensions due to residual stress, and thus its length may change after the above cutting, making it unusable for use. Conventionally, an annealing process has been performed to prevent this. However, this annealing treatment is not a sufficient measure for suppressing dimensional change despite the increase in cost, and particularly, changes in atmospheric temperature during use, expansion and contraction caused by heating by direct sunlight, and the like. Was ineffective against heat aging and could not be expected to have an inhibitory effect.

For this reason, the locking clip according to the conventional extrusion molding is peeled off from the body during use due to shrinkage, and loses the locking force of the molding, rises, or undulates due to expansion and loses the locking force. There are problems such as impairing the stopping function and the appearance.

[Purpose of the Invention] The present invention has been researched and developed in order to improve the defect inherent in a locking clip extruded from a synthetic resin into a material. Removal without applying, while effectively avoiding changes in atmospheric temperature, dimensional changes due to heating by direct sunlight, and even thermal aging, work to mount to window openings by cutting dimensional changes after cutting to a predetermined length It is an object of the present invention to propose a locking clip for a molding for a window, in which troubles at the time of use are improved and expansion and contraction during use are suppressed to prevent loss of locking force due to peeling or floating.

On the other hand, as described above, in addition to the dimensional change due to residual stress, the conventional synthetic resin locking clip expands and contracts due to thermal change, resulting in dimensional change, peeling from the window opening, and stopping floating molding. Make the wearing state unstable,
In addition, there is a problem that the appearance is impaired, but at the same time, the change due to the heat affects the engaging force itself and impairs a firm engaging force. For this reason, the conventional locking clip had a method of coping with the reduction of the locking force by preparing a certain thickness in advance, so that the clip itself could not be formed thin. It is an object of the present invention to provide a locking clip for a window molding, in which the clip itself can be formed to be thin by giving rigidity to the clip itself so that the fastening space of the locking clip can be reduced.

[Means for Solving the Problems] In order to achieve the above object, the present invention involves mixing a short glass fiber yarn into a synthetic resin which is a material of a locking clip, and extruding the mixed material into a strip-shaped material. The main body is formed, and an appropriate amount of short glass fiber yarn is buried in a dispersed state over the entire length of the main body of the clip. In addition, the present invention further adds to the mixing of the above glass short fiber yarn, or embeds the glass long fiber yarn along the length direction in a clip main body extruded into a strip-like shape alone to form a glass fiber. The object is to suppress contraction and extension and increase the rigidity of the clip to increase the locking force.

That is, the present invention has a smaller coefficient of thermal expansion relative to the coefficient of thermal expansion of the synthetic resin used as the material of the retaining clip such as nylon resin, has a smaller expansion and contraction rate to heat, and has a higher melting point than nylon resin. The embedding of glass fiber yarns in locking clips. This embedding stabilizes against residual stress caused by extrusion molding, and also expansion and contraction due to temperature changes due to changes in ambient temperature, heating by direct sunlight, etc., and locks by increasing rigidity. The purpose is to prevent a decrease in force.

The embedding of the glass fiber yarn in the present invention is performed by mixing the short fiber yarn into the material and simultaneously extruding the same at the time of forming the locking clip and embedding the glass fiber yarn in a dispersed state in the main body of the strip-like shape. At the same time, there is a case where the glass fiber is buried in the main body and buried along the length direction, or a case where both of them are performed simultaneously and the long fiber yarn is buried together with the mixing of the short glass fiber yarn.

When short glass fiber yarn is used alone When about 10% is mixed in the cutting area mainly composed of clips, it is effective against temperature change and heat aging, and when glass long fiber yarn is embedded, a filament with a diameter of 9μ is used. The expected effect can be obtained by embedding about eight pieces. In particular, the effect is remarkable when burying long fiber yarn in conjunction with mixing of short fiber yarn,
For example, if a long fiber yarn is embedded,
It is recognized that 3% contamination amplifies the effect.

The short glass fiber yarn may be 1.5 to 2.0 mm long and about 0.01 mm in diameter, and for the embedded long fiber yarn, the effect can be expected with a commercially available filament yarn of about 0.009 mm as described above. . And, about this long fiber yarn, 8
The use of more than this is effective, and in practice, a stable effect can be obtained by embedding about 28 pieces.

It is preferable that a plurality of long fiber yarns are used after being bundled, and when the long fiber yarns are buried mainly in the retaining clip, it is effective to embed a plurality of bundled filament yarns at a plurality of locations in parallel.

By the way, a soft synthetic resin may be used for one side edge portion of the clip main body, particularly an edge portion which comes into contact with the surface portion of the body when molding the locking clip, in order to secure adhesion to the body and to avoid friction. However, in this case, the short fiber yarn is mixed into the hard synthetic resin portion avoiding the soft portion, and the long fiber yarn is embedded. When burying the long fiber yarn, the long fiber yarn is buried in a portion which does not interfere with the soft synthetic resin, avoiding the boundary between the soft and hard resins. It should be noted that the present invention does not prevent annealing of the main body of the extruded clip.

[Action] As described above, the locking clip according to the present invention in which short glass fiber yarns are mixed in the synthetic resin material or glass long fiber yarns are buried along the longitudinal direction in the main body of the clip at the same time as extrusion molding is used. These glass fiber yarns are less affected by
Since there is no change in expansion and contraction, the expansion and contraction of the synthetic resin which expands and contracts due to a change in heat such as the ambient temperature is effectively suppressed, and the change in the length is suppressed to stabilize. The mixed glass short fiber yarn not only suppresses the expansion and contraction of the clip only in the longitudinal direction, but also suppresses the deformation of the locking piece that locks the molding by suppressing the entire expansion and contraction, and imparts rigidity by molding. And a stable locking force.

Next, the present invention will be described with reference to embodiments, and its features will be described in detail.

[Embodiment] The illustrated embodiment shows the use of the locking clip according to the present invention. FIG. 1 is a perspective view showing a state immediately before being attached to a window opening of an automobile, and FIG. 2 is a use state. It is sectional drawing which showed.

The locking clip 1 is extrusion-molded using a nylon resin as a material. A locking piece 1b serving as a locking portion for locking the locking piece 2 on one side edge of the main body 1a in the form of a strip is folded along one surface of the main body.
Is formed over the entire length along the longitudinal direction, and the other side edge is formed to be gradually thinner so that the contact piece is in contact with the surface of the window opening.
There is as 1c. Although not shown in this embodiment, short glass fiber yarns are mixed in the nylon resin prior to the above-mentioned extrusion molding, and this is dispersed in a clip body including the locking pieces 1b.
On the other hand, a long glass fiber thread 3 is embedded in the main body 1a and the engaging piece 1b along the longitudinal direction through a die during extrusion molding.

A plurality of glass filament yarns 3 each having a diameter of about 10 μm are bundled together and aligned, and are scattered and embedded at a plurality of locations.

The above-mentioned locking clip 1 is fixed along a window opening 5 formed in the body 4 of the automobile similarly to a conventional locking clip, and is provided with a locking means of a molding 7 attached along the periphery of the glass 6. Is done. Here, first, it is fixed to the upright wall portion 9 of the window opening via the double-sided adhesive tape 8 which is fastened along one surface of the clip main body 1a, and then the glass 6 fitted into the window opening is fixed with the sealant 10. With the molding 7 with the locking piece 2 fitted at an appropriate position facing the top, the locking leg 2a of the piece 2 is inserted along the one surface of the main body 1a of the locking clip, and is hooked on the locking piece 1b for mounting. .

The retaining clip 1 is formed by continuously molding a molten synthetic resin, in this case, a nylon resin, through a die of an extruder, and cutting the fixed length to a predetermined length of a window opening to be mounted next. In preparation for use, during this time the locking clip generally shrinks due to residual stress, resulting in a shortage of dimensions during actual use, as well as changes in ambient temperature and direct sunlight during use with the molding attached. Dimensional changes such as thermal expansion and shrinkage due to temperature changes under natural conditions such as heating and shrinkage due to thermal aging, which causes the adhesive to the body to peel off and the function to fix the molding Although there were problems such as damage to the appearance and damage to the appearance due to lifting, the locking clip of the present invention has the effect of the short glass fiber thread mixed inside the clip main body and the length of the clip. Due to the action of the long glass fiber thread 3 embedded along the direction, a change in expansion and contraction of the locking clip itself after extrusion molding is suppressed. The adverse effects such as peeling due to shrinkage can be effectively avoided.

The attached tables [I] to [III] measure the heat aging of the locking clip according to the conventional method and the locking clip according to the present invention, dimensional change due to temperature change, shrinkage due to heat aging, and linear expansion coefficient due to temperature change. It is a comparative example showing the result.

The seven samples shown in each table are all made of nylon resin of product number 3035JU nylon 12 manufactured by Ube Industries, Ltd. In addition, 1.5
Use short fiber yarn with a length of ~ 2.0mm and a diameter of about 0.01mm, and product number ECG1 manufactured by Nitto Boseki Co., Ltd.
A filament yarn having a diameter of 9 μm and an outer diameter of 0.14 mm related to 50-1 / 2 3.3S was used.

Each sample in each table is measured with a vernier caliper based on a length of 720 mm. In the dimensional change in Table [I], the circles marked with an arrow indicate the length position in the air at 80 ° C. after heat aging.
The amount of elongation in a 90 ° C atmosphere and the downward arrow are the amount of shrinkage in a -40 ° C atmosphere.

Table [II] shows the shrinkage measured after 8 days in the air at 80 ° C., and Table [III] shows −40 ° C. in the air.
It shows the coefficient of linear expansion when the temperature is changed from 90 ° C to 90 ° C.

As is apparent in these comparative examples, when a short glass fiber yarn is mixed into the locking clip according to the conventional method,
2.5% contamination has an effect on heat-induced dimensional change, 10%
It was recognized that a dramatic effect was exhibited in the mixing ratio of manganese.

And, as shown in the example of embedding the long glass fiber yarn along the length (No. 7 sample), it is recognized that it has an effect on dimensional change due to heat and shrinkage due to heat aging. In addition, it was confirmed that when short glass fiber yarns were added to the mixture, the effect was specifically exhibited at a small amount of 2.5%.

In addition, the dimensional change with respect to heat becomes smaller as the amount of mixed glass short fiber yarn increases through the experiment, and the effect is evident from 4.5 in the burying of glass long fiber yarn, and a clear effect is expected in 8 or more. I can do it. As is clear from the table, this effect is remarkably exhibited in a mixed use type in which short glass fiber yarn is mixed and long fiber yarn is embedded, and a stable product is obtained.

[Effects of the Invention] As described above, according to the present invention, expansion and contraction of a product, which has been a problem in a locking clip extruded from a conventional synthetic resin alone, is caused by the incorporation of short glass fiber threads, or Since it is suppressed and stabilized by the burying of the long glass fiber yarn, it is possible to omit an expensive annealing treatment, and at the same time, it does not peel off from the body at the time of use and loses the fastening force, and does not lose its appearance due to floating. Moreover, since a strong locking force can be obtained, a design in which the thickness of the locking clip itself is reduced is possible, and the fitting of the molding can be further improved.

Needless to say, along with the omission of the annealing treatment, the glass fiber yarn itself can be obtained at a low cost, so that a good quality locking clip can be provided economically and quickly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state immediately before a locking clip according to the present invention is mounted on a window opening of an automobile, and FIG. 2 is a sectional view showing a use state. DESCRIPTION OF SYMBOLS 1 ... Locking clip, 1a ... Clip main body 1b ... Locking piece, 3 ... Glass filament yarn

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Mitsuru Shiota 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Nifco Co., Ltd. (56) References JP-A-57-49657 (JP, A) JP-A-62- 251227 (JP, A) Actually open 63-170320 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] 1. A locking clip for a window molding of an automobile, wherein a main body is extruded in a strip shape from a nylon resin material, and a locking piece of the molding is provided on one surface thereof over the entire length. The above-mentioned main body is characterized in that eight or more, preferably about 28, glass long fiber yarns of about 0.009 mm along the longitudinal direction are extruded at a plurality of locations along the length direction by extrusion and twisted at appropriate places. Locking clip. 2. A locking clip for a window molding of an automobile, wherein a main body is extruded in a strip shape from a nylon resin material, and a locking piece of the molding is provided on one surface thereof over the entire length thereof. In the main body, a suitable amount of short glass fiber yarn is mixed during extrusion molding and embedded in a dispersed state, and at the same time, a core material made of long glass fiber yarn is embedded integrally along the length direction. clip.