JPH0338430A - Manufacture of glass rum with corner piece - Google Patents

Abstract

PURPOSE:To prevent the glass run portions of a sash corner portion from being detached from a sash, by separating in an approximate parallel end surfaces which are due to cutting off, and arranging them in a formation mold at an agle equivalent to the refraction angle of the sash corner portion, and conducting the after-formation of a corner piece out of an after-formation material, and integrating in connection two glass main bodies. CONSTITUTION:At a glass run with a corner piece, two glass run main bodies 1, 1 come into contact with each other at contacting surfaces 3a, 3b through a 2-8 mm wide corner piece 3 portion at a base portion 11 and side wall portions 12,13. And respective main lips 14,15 come into contact with each other at contacting surfaces 3c,3d,3e,3f through the corner piece 3 portion at an angle of 30-60 degrees on a parallel surface with the surface of the base portion 11 against a surface which is perpendicular longitudinally, obliquely toward the longitudinal inside of glass run main bodies. Accordingly, even if force acts on a direction in which the contacting angle theta of the glass run opens, cracks do not occur easily at contacting surfaces and develop toward side wall sides, because at main lips 14, 15 portions, their contacting surfaces do not meet at right angles with a peeled-off direction.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a glass run with a corner piece that is fitted into a sash for an elevating window glass that is attached to a vehicle door, etc. The present invention relates to a method of manufacturing a glass run with a corner piece, which prevents the glass run from falling off and improves the bonding strength between the glass run body and the corner piece.

[Prior Art] A sash for an elevating window glass attached to a vehicle door or the like is welded together at the corner portions of its upper front edge and upper rear edge in a shape bent at a predetermined angle.

Therefore, the glass run fitted into the sash has, for example, a glass run main body 1 having the cross-sectional shape shown in FIG.
After cutting, each glass run body is cut at a predetermined angle, and its base 11, side walls 12, 13, main lips 14, 1.5, and seal lips 18, 19 maintain almost their original cross-sectional shapes. A corner piece 2 was formed with a post-forming material in a shape to be extended in the longitudinal direction and joined, and both glass run bodies were connected and integrated in a shape that matched the refraction angle of the corner of the sash.

In this case, the retaining protrusions 16° and 17 on the glass run body are
It is not formed in the corner piece 2.

This is the retaining protrusion 16. ↓In order to mold 7 into a shape that extends and joins like the other parts above, it would be impossible or the mold would be extremely complicated because the protruding part protrudes from the mold opening direction. This is because the cost of mold production becomes several times higher.

[Problem to be solved by the invention] The glass run is inserted into the satush, and the window glass 9
When the window glass 9 is opened from the closed state, the load due to sliding between the window glass 9 and the glass run is concentrated on the corner piece 2 of the glass run. Therefore, as described above, if the retaining protrusions 16 and 17 were not present on the two corner pieces of the glass run, the two corner pieces of the glass run often came off from the bent portions of the corners of the sash.

In addition, when the glass run with corner pieces connected as described above is handled during storage, transportation, assembly, etc., or when the window glass is raised and lowered, the above joint angle θ (Fig. 2) is in the opening or closing direction. force is likely to be applied repeatedly to or in both directions.

As shown in FIG. 1, the cross section of the glass run body 1 is thin, the joint area with the corner piece 2 is small, and the joint surfaces 2a and 2b (FIG. 2) are along the longitudinal axis of the glass run body 1. Since the surface is perpendicular to the direction, the joining angle θ is
If a force is applied in the direction of opening, the joint surface will be peeled off in the vertical direction, and cracks will easily occur on the joint surface.Furthermore, the joint surface of the glass run body 1 and the corner piece 2 will be on the same plane. Since it is on top, cracks can easily grow.

In this way, Garasran leaves Satshu,
As cracks develop and grow, they become embedded within the satshu,
The purpose of installing the glass run, which holds the edge of the window glass 9 and prevents noise from entering the vehicle interior in addition to rainwater and dust from outside the vehicle, is not achieved.

The object of the present invention is to provide a method for manufacturing a glass run that solves these problems.

[Means for Solving the Problems] The method for manufacturing a glass run with a corner piece according to the present invention includes the following steps.

(b) A base portion facing the edge surface of the window glass, side walls formed in a free state to open diagonally outward in a V-shape on both sides of the base portion in the width direction, and the base portions of both side walls. A retaining protrusion protrudes further diagonally outward from the base of the sash, and the retaining protrusion extends from the upper end of both side walls and bends inwardly. A glass run body having a main lip held together and a sealing lip each extending outward in the opposite direction from the main lip and covering the opening edge of the sash is manufactured by extrusion molding from a synthetic resin compound. The first step is to manufacture the rubber compound by extrusion molding and vulcanization.

(b) When the glass run body is inserted into the sanosh and the window glass is pushed in, a second process is performed to apply flocking treatment or lubrication treatment to the base and main lip portions of the glass run body that come into sliding contact with the edge of the window glass. Process.

(c) By butting the ends of the two glass run bodies so that the base side is the outer periphery,
When the glass run body is inserted into the satshu so that both glass run bodies touch at an angle close to the angle of refraction at the corner of the satshu, the glass run including the width direction of the base 3rd step of cutting with a plane inclined to the long plane direction.

(d) With the main lip portion of the glass run body in the restrained state as described above, the side wall portion of the cut end surface in the third step is aligned from the root toward the longitudinal inside of the glass run body with respect to the plane perpendicular to the longitudinal direction. A fourth step of cutting on a plane parallel to the part surface and inclined by 30 to 60'.

(e) Cut the two glass run bodies by 2 to 8 r so that the end faces of each glass run body cut in the third step are almost parallel to each other.

m apart and placed on the molding wall so as to face the angle corresponding to the refraction angle of the corner of the satshu, and then with the molding material.

The other parts of each glass run main body, except for the retaining protrusions, maintain almost the original cross-sectional shape and extend in the longitudinal direction.
A fifth step in which a corner piece is post-molded into the shape to be joined, and both glass run bodies are connected and integrated via the corner piece.
Process.

Therefore, conventional problems can be solved.

[Function] As shown in FIGS. 5 and 6, the glass run with a corner piece according to the manufacturing method of the present invention has two glass run bodies 1, 1, a base portion ↓1 and a side wall portion 12. 13
In this case, the joint surfaces 3a and 3b touch each other through 3 corner pieces with a width of 2 to 8 mm, and each main lip 1
4.15 is diagonal towards the longitudinal inside of the glass run body,
The joint surfaces 3c, 3d, 3e, and 3f are in contact with each other through the corner piece 3 at an angle of 30 to 60' on a plane parallel to the base 1 with respect to a plane perpendicular to the longitudinal direction. Therefore, even if a force is applied in the direction in which the glass run's joint angle 0 opens, the joint surface between the glass run body 1 and the corner piece 3 is not on the same plane as in the conventional glass run with a corner piece, and the main lip 14 At the .15 part, the bonding surface is not perpendicular to the peeling direction, so cracks do not easily form from the bonding surface and grow toward the side wall.

Also, since the side wall portions 12, 12, 13, and 13 on the same side are in contact with each other via the narrow corner piece 2, the missing area of the retaining protrusions 16 and 17 is smaller than that of the conventional one shown in FIG. The shape is extremely narrow compared to the shape created by the manufacturing method, and the 3 corner pieces of the glass run that are fitted into the corners of the sash will not separate from the sash.

[Example] An example of the present invention will be described in detail for each step with reference to the drawings.

First step: FIG. 1 is a cross-sectional view of the glass run body l taken as an example, taken along a plane perpendicular to the longitudinal direction.

The glass run body 1 is formed by having a base part 11 facing the edge surface 91 of the window glass 9, and opening diagonally outward in a V-shape on both sides of the base part 11 in the width direction in a free state after extrusion molding. The two side walls 12, 13, and the retaining protrusions 16 and 17 that protrude obliquely outward from the base of the side walls 12.13 and the base 11, and the retaining ridges 16 and 17 that extend inward from the upper ends of the side walls 12 and 13, respectively. a main lip 14.15 which is bent and holds together the edge side 92 of said pane 9 which is pushed in after being fitted into a sash (not shown);
as well as sealing lips 8, 19 each extending outwardly in a direction opposite to its main lip 14, 15 and covering the opening edge of the sash.

The glass run body 1 is manufactured by extrusion molding from compounded materials such as thermoplastic synthetic resins such as soft vinyl chloride resin, urethane resin, and soft amide resin, various thermoplastic nidistomers, and natural or synthetic rubber. In the case of materials containing natural or synthetic rubber or thermoplastic elastomers, vulcanization or crosslinking treatment may be performed following extrusion molding, if necessary.

Furthermore, when the completed glass run is inserted into the sash and the window glass 9 is inserted, there is also a base part 1 and a main lip 14, on which the edge surface 91 and the edge surface 92 come into sliding contact.
At the time of extrusion molding of the glass run body 1 or immediately after extrusion molding of the glass run body 1, a large number of protrusions or protrusions are provided on a desired portion of the surface of the glass run body 15 to reduce the sliding resistance with the window glass 9, or other side i12,
13 to prevent it from falling inward, to prevent the tip of the main lip 14.15 from being excessively deformed toward the side wall 12.13, or to prevent the edge side surface 92 of the window glass 9 from being excessively deformed.
It is also possible to provide a protrusion or the like for supporting the main lip separately from the main lip 14,15.

Note that such protrusions arranged in the longitudinal direction of the glass run body can be easily formed by making cuts in the extrusion molding die, and can also be embossed at desired positions on the glass run body after extrusion molding. It is also possible to provide protrusions and protrusions by applying.

2nd step When the Nigarasan is fitted into the sash and the window glass 9 is inserted, short fibers are applied to the desired area of the base 11 and main lip 14.15 of the glass run main body 1 that slides against the edge of the window glass 9 A lubrication treatment is performed to lower the sliding resistance with the window glass 9 that comes into sliding contact by performing electro-flocking, applying a lubricating paint, or applying a lubricating paint after performing the electric-flocking.

Third step: The ends of the two wooden glass run bodies 1 are connected basically in the same manner as the butt joint method of the corners of the picture frame. FIG. 3(a) is a front view of the cut end surface 8 of the glass run body 1 after the third step, viewed from the main lip side.
FIG. 3(b) is a side view seen from the side wall 13 side.

The cut end surfaces 8 of the two glass run bodies 1 are butted together so that the base 11 side is the outer periphery, so that the butt angle of the outer periphery matches the refraction angle of the corner of the sash. In a restrained state in which the glass run body 1 is fitted into the sash so that the glass run body 1 has a shape that It is formed by cutting with a plane inclined at an angle α.

Fourth step: FIG. 4 is a front view of the cut end surface of the glass run main body 1 seen from the main lip side after the fourth step.

Following the third step, both the main lips 14 and 15 are held in the restrained state as shown in FIG.
Cut toward the inside of the longitudinal direction with an inclined plane having an angle β of 30 to 60' on a plane parallel to the base l1 plane with respect to a plane perpendicular to the longitudinal direction. 14a and ↓5a show the new cut end surfaces of the main lips 14 and 15 cut in this process, respectively.

Fifth step: The cut end surfaces of the base portion 11 and side walls 12 and 13 of the two glass run bodies 1 and L cut into a predetermined shape are approximately parallel to each other and separated by 2 to 8 mm, and the corners of the sash are separated. and placed in an injection mold (not shown) at an angle corresponding to the angle. This mold is made by injecting the molding material into the mold so that each glass run body 1.1
It has a cavity that allows the corner piece to be post-molded into a shape in which the parts other than the retaining protrusions 16 and 17 maintain substantially the original cross-sectional shape and are extended and joined in the respective longitudinal directions. There is.

Then, when the two glass run bodies 1.1 are placed in an injection mold generally consisting of a movable mold, a movable mold, and an auxiliary mold and the mold is closed, the base portion 1.1, the side wall 1.1, and the side wall 1. ↓3. The main lip 14.15 and seal lip 18.19 portions are compressed by a mold rjB in the thickness direction of these portions near their cut end surfaces, and the retaining protrusions 16.17 are formed on the side wall 12. The structure is such that the post-molding material does not flow out between the surfaces of each part on the glass run body and the mold surface, thereby preventing the generation of flash.

Note that the respective base portions 11 of the two glass run bodies 1
and the cut end surfaces of the side walls 12.13 are approximately parallel to each other from 2 to 8.
The glass run body 1 is placed in the mold by the above-mentioned clamping pressure between the molds.
The edges of the cut edges are pressed in a direction that narrows the gap between the cut end surfaces, so if the gap is less than 2 mm when placed, the gap will be reduced to 1 mm or less due to the pressure, and the flow of the post-molding material in the cavity will be reduced. Since the temperature of the post-molding material deteriorates or the injection amount decreases, the temperature drop of the post-molding material becomes large, and the bonding by thermal fusion between the post-molding material and the cut end surface of the glass run body 1 becomes uncertain. Furthermore, if the above-mentioned interval exceeds 8 mm, the amount of post-molding material injected will increase, and the area where the retaining protrusions 16 and 17 are missing will expand in the molded corner piece 3 (Figs. 5 and 6), and the corner The effectiveness of preventing the piece from coming off at the 3rd piece is reduced.

The post-molding material injected into the mold for post-molding the corner piece 3 may be the same material as the material on the glass run body, but it may be a material of the same type but with increased hardness, or a material of a different type. The material is selected from among materials that have good adhesion to the material of the original glass run body 1, and materials that can be crosslinked in a short time.

Before post-forming the corner piece 3, the cut end surface of the glass run body 1 is coated with, for example, if the glass run body 1 is manufactured from a soft vinyl chloride resin compound, the plasticizer contained in that material bleeds. Various surface treatment agents and adhesives, including urethane resin, may be applied to prevent extrusion and improve adhesion with post-molding materials.

As described above, two glass run bodies 1 are placed in a mold with the cut end faces of each third step parallel to each other and separated by 2 to 8 rn m, and then the molding material is injected and the material is cooled. Alternatively, if the mold is opened after crosslinking and the integrally connected molded product is taken out, a glass run with corner pieces as shown in FIGS. 5 and 6 can be obtained.

In addition, in the fourth step, both main lips 14.15 are
As shown in the figure, from the base of the sides 112 and 13 toward the longitudinal inner side of the glass run body 1, an angle β is formed on a plane parallel to the base l1 plane with respect to a plane perpendicular to the longitudinal direction.
The reason for cutting at an inclined plane where the angle is 30 to 60' is that when this angle increases to 30 degrees, the joint angle θ (Fig. 5) of both glass run bodies 1 is applied in the direction of opening. , is preferable because a peeling force acts on the joint surface in a direction nearly perpendicular to the surface. Moreover, if it exceeds 60', the joint surface of that part becomes long, and when attached to the sash, the joint surfaces 3c, 3d, and 3a.

This is because, in addition to conspicuous 3F, the corner piece molding die used in the next fifth step becomes larger, increasing manufacturing costs, and the work of cutting the glass run body 1 and mounting it to the molding die becomes complicated.

In addition, in the embodiment described above, both side walls 12, 12, 13, 1 on the same side are butt-joined through the corner piece 3.
3 are the same height, but due to the shape of the satchel, for example, only the side walls 13 and 23 on the inside of the car have different heights with the corner piece 31 as the boundary, as shown in FIG. Sometimes. In this case, in the third step, the lengths of the cut end surfaces of both side walls 13.23 on the same side may be the same. In other words, when the heights of both side walls 13 on the same side are equal, the angle between the cut base surface of the glass run body 1 and the cut end surface corresponds to the angle obtained by dividing the refraction angle of the corner of the satshu into three equal parts. The angles γ and γ of the tips of the glass run bodies 1 and 1 that butt each other (Figure S)
are equal, but when the heights of both side walls are different, the angles δ and E of the tips of both sides are different as shown in FIG. In addition,
3g and 3h indicate the joint surfaces between the corner piece 31 and the glass run bodies 1 and 21, respectively.

In addition, in the case where the opening twill part is bent with a large radius of curvature at the corner of the satsui, as described above, the two glass run bodies are cut in parallel with the cut end surfaces of each in the third step by 2 to 8 mm. L. If only the method of post-molding the corner piece with a post-molding material is used, the seal lip of the post-molded corner piece may not be able to be formed into a radius of curvature corresponding to the opening edge of the sash. At this time, following the third step, the side wall portion 13 portion and the seal lip 19 are further cut out to form the joint surfaces 3i, 3j shown in FIG.
The corner pieces 32 may be post-molded with the corners separated from each other by a large distance. Furthermore, as shown in FIG. 9, the cut end surfaces of both glass run bodies 24, 24 in the third step are set at an angle γ corresponding to the angle of the predetermined corner portion of the sash.

It is cut at angles η, η slightly smaller than γ, and on the joint surface 3 between both glass run bodies 24 and 24 and the corner piece 33,
3 m may be placed in a mold and then molded so that the upper end side 13A of the side wall 13 is slightly wider than the base side 13B of the side wall 13.

[Effect of the invention] The manufacturing method of the glass run with corner pieces of this invention is as follows:
Since it is configured as described above, it has the following effects.

Compared to the conventional manufacturing method in which the glass run body is cut along a plane perpendicular to its longitudinal direction and joined together via corner pieces, both side walls are in contact with each other via narrow corner pieces. The missing area of the retaining protrusion is narrow, and the glass run portion at the corner of the satsui will not come off from the satsui.

Furthermore, since the corner pieces are smaller, only a small amount of post-molding material is required, and therefore heating time, vulcanization time, and cooling time can be shortened.

Furthermore, according to the manufacturing method of the present invention, the two glass run bodies are in contact with each other through corner pieces of 2 to 8 mm at the base and side walls, and each main lip is directed inward in the longitudinal direction of the glass run body. Diagonally, on a plane parallel to the basal plane with respect to a plane perpendicular to the longitudinal direction, 30 to 60
'Because they are slanted surfaces and touch each other through the corner pieces.

Even if force is applied in the direction in which the glass run joint angle 0 opens,
The bonding surfaces between the glass run body and the corner piece are not on the same plane as in conventional glass runs with corner pieces, and the bonding surface at the main lip is not perpendicular to the peeling direction mentioned above. Cracks occur easily,
It does not grow toward the side wall, and is effective in preventing rainwater, dust, and outside noise from entering the vehicle interior when the glass run is transported, attached to a satchel, and used for long periods of time.

[Brief explanation of drawings]

FIG. 1 is a sectional view taken along a plane perpendicular to the longitudinal direction of the glass run main body shown as an example, and is also used to explain the prior art. FIG. 2 is a side view of a conventional glass run with corner pieces. Figure 3(a) is a front view of the cut end surface of the glass run body after undergoing the third step of the present invention, seen from the main lip side, Figure 3(b) is its side view, and Figure 4 is its front view. FIG. 5 is a front view from the main lip side showing the cut end surface of the glass run body after the fourth step of the invention; FIG. The figure is a perspective view of the glass run with a corner piece shown in FIG. 5, and FIGS. 7, 8, and 9 are side views showing the joint surfaces of the glass run main body in other embodiments. 1.21.24... Glass run body 3.3↓, 32.33... Corner piece 11... Base part 12.13, 23... Side wall 14.15... Main lip 16.17 ... Retaining protrusion 18, 19 ... Seal lip 91 ... Edge surface of window glass 92 ... Edge side surface of window glass

Claims (1)

[Claims] A method for manufacturing a glass run with a corner piece, which comprises the following steps. (b) A base portion facing the edge surface of the window glass, side walls formed on both sides of the base portion in the width direction in a free state and opening diagonally outward in a V-shape, and the base portions of both side walls. A retaining protrusion protrudes further diagonally outward from the base of the sash, and the retaining protrusion extends from the upper end of both side walls and bends inwardly. A glass run body having a jointly holding main lip and a sealing lip each extending outwardly opposite to the main lip and covering the opening edge of the sash is manufactured by extrusion from a synthetic resin compound. Or, the first product is manufactured by extrusion molding from a rubber compound and undergoing vulcanization treatment.
Process. (b) When the glass run body is fitted into the sash and the window glass is inserted, the base and main lip portions of the glass run body that come into sliding contact with the edge of the window glass are subjected to flocking or lubrication treatment. Process. (c) By butting the ends of the two glass run bodies so that the base side is the outer periphery, so that both glass run bodies touch at an angle close to the refraction angle of the sash corner. A third step of cutting on a plane that is inclined with respect to the longitudinal direction of the glass run, including the width direction of the base, in a restrained state in which both side walls are juxtaposed when the glass run main body is inserted into the sash. (d) Hold the main lip portion of the glass run body in the above-mentioned restrained state from the base of the side wall of the cut end surface in the third step toward the longitudinal inner side of the glass run body, against the plane perpendicular to the longitudinal direction, so that the base surface The fourth step is to cut on a plane parallel to , with a plane inclined at 30 to 60 degrees. (e) Arrange the two glass run bodies in a mold so that the end faces cut in the third step are almost parallel and 2 to 8 mm apart, and the angle corresponds to the refraction angle of the sash corner. Using the molding material, the corner pieces are post-molded into a shape in which the other parts of each glass run main body, except for the retaining protrusions, maintain almost their original cross-sectional shape and are extended and joined in the longitudinal direction. The fifth step is to connect and integrate both glass run bodies via the .