JP2008037257A - Glass run integrated division bar - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run integrated division bar buried with a metallic core bar such as iron, stainless steel, etc. in a resin part formed of high rigidity resin such as polypropylene, etc. and excellent in appearance without forming a thin part due to shrinkage on the resin part. <P>SOLUTION: The core bar 20 is also buried in the tip 11b of the resin part 11 on this glass run integrated division bar constituted of a main body 10 having an inner lip 12 and an outer lip 13 projecting inward from the tip surface 11a of the resin part 11 with a cross-section of a roughly H letter shape formed of the high rigidity resin by integrally providing the glass run on a division bar provided in the vertical direction on a rear part of a rear door 2 of an automobile and the metallic core bar 20 with a cross-section of a U letter shape buried in the resin part 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a glass run integrated type division bar in which a glass run is integrally provided on a division bar provided in a vertical direction at a rear portion of a rear door of an automobile.

  This will be described with reference to FIGS. 2. Description of the Related Art Conventionally, as shown in FIG. 2, a separately formed glass run 31 is attached to a division bar 30 provided in the longitudinal direction at the rear part of a rear door 2 of an automobile.

  In recent years, for the purpose of weight reduction, instead of such a configuration, as shown in FIG. 3, a glass run integrated type division bar 40 in which a glass run is integrally provided in a division bar has been adopted.

  The glass run integrated division bar 40 is a main body portion in which an inner lip 12 and an outer lip 13 are projected inward from a front end surface 11a of a resin portion 11 having a substantially H-shaped cross section formed of a highly rigid resin such as polypropylene. 10 and a cored bar 41 having a U-shaped cross section made of iron or stainless steel embedded in the resin portion 11.

  Such a conventional glass run integrated division bar 40 has an advantage that it is lighter in weight than the conventional division bar 30 and the glass run 31 that are separately molded and assembled. However, there is a problem to be solved newly. is there.

  In other words, this glass run integrated type division bar has a cored bar 41 embedded in the resin part 11, and this cored bar 41 is, for example, an opening seal attached along the door opening edge as shown in FIG. Like the core material embedded in the mounting portion having a U-shaped cross section, the resin portion 11 is not embedded in the distal end portion 11b. This is because the tip 11b of the cored bar 41 does not protrude from the resin part 11 even if molding variations of the cored bar 41 occur. This is because sufficient rigidity can be obtained without being embedded in the portion 11b.

  Therefore, a new problem is that although there is no change in shape after extrusion molding, after cooling, as shown in FIGS. 3 and 4, sink marks are generated in the tip portion 11 b of the resin portion 11, That is, a thin-walled portion 42 that is thinner than other portions in which the cored bar 41 is embedded is formed in the portion.

This is because the linear expansion coefficient of a highly rigid resin such as polypropylene and a metal such as iron or stainless steel are greatly different. That is, for example, that of polypropylene is 7 to 10 × 10 ⁻⁵ / ° C., whereas iron is 12 × 10 ⁻⁶ / ° C., and stainless steel is 10 to 17 × 10 ⁻⁶ / ° C. The linear expansion coefficient of polypropylene is about 10 times larger than that of iron or stainless steel. Therefore, sink marks are generated after cooling at the front end portion 11b of the resin portion 11 where the core metal 41 is not embedded, and a thin portion 42 is formed thinner than other portions. Since the front end portion 11b of the resin portion 11 is a visible portion, the appearance is greatly deteriorated when the thin portion 42 is partially formed.

  The present invention was devised in view of these problems, and in a glass run integrated type division bar in which a metal core such as iron or stainless steel is embedded in a resin portion formed of a high rigidity resin such as polypropylene, the resin portion It is an object of the present invention to provide a product that does not have a thin-walled portion due to sink marks and has excellent appearance.

  This will be described with reference to FIGS. 1 and 5. The glass run integrated division bar 1 according to claim 1 is a resin having a substantially H-shaped cross section formed of a high rigidity resin by integrally providing a glass run on a division bar provided in a longitudinal direction at a rear portion of a rear door 2 of an automobile. A main body 10 having an inner lip 12 and an outer lip 13 projecting inward from the front end surface 11 a of the part 11, and a metal core bar 20 having a U-shaped cross section embedded in the resin part 11. The cored bar 20 is also embedded in the tip end part 11 b of the resin part 11.

  The glass run integrated division bar 1 according to claim 2 has a substantially H-shaped cross section formed of a high rigidity resin made of polypropylene, with a glass run integrally provided on a division bar provided in the longitudinal direction at the rear portion of the rear door 2 of the automobile. A body portion 10 having an inner lip 12 and an outer lip 13 projecting inwardly from a front end surface 11a of a resin-like resin portion 11, and a core made of iron or stainless steel embedded in the resin portion 11 and having a U-shaped cross section In the structure constituted by the gold 20, the core metal 20 is also embedded in the front end portion 11 b of the resin portion 11.

  In the glass run integrated division bar 1 according to claim 1, a metal core 20 is embedded in a resin portion 11 made of high-rigidity resin. Since it embeds, the thin part 42 by sink marks is not formed in the front-end | tip part 11b of the resin part 11 by cooling after extrusion molding. Therefore, the entire resin part 11 can be formed to have the same thickness, and the glass run integrated division bar 1 having excellent appearance can be provided.

  The glass run integrated division bar 1 according to claim 2, in which a core metal 20 made of iron or stainless steel is embedded in a high-rigidity resin made of polypropylene, and the core metal 20 is attached to the front end portion 11 b of the resin portion 11. In the same manner, the thin-walled portion 42 due to sink marks does not occur at the tip portion 11b of the resin portion 11 due to cooling after extrusion molding. Thereby, since the whole resin part 11 can be formed in the same thickness, the glass run integrated division bar 1 excellent in the external appearance can be provided.

  1 and 5 show an embodiment of a glass run integrated division bar 1 according to the present invention. This is a glass run integrated division bar 1 in which a glass run is integrally provided on a division bar provided in a vertical direction at the rear part of a rear door 2 of an automobile, and is composed of a main body 10 and a cored bar 20.

  The main body 10 has an inner lip 12 and an outer lip 13 inward from a front end surface 11a on one side (door glass 3 side) of a resin part 11 having a substantially H-shaped cross section formed of a high-rigidity resin made of polypropylene. Protrusively formed. The inner lip 12 and the outer lip 13 are made of soft resin or soft rubber.

  The front end surface 11 a of the resin portion 11 is a root of the inner lip 12 and the outer lip 13 and is covered with the inner lip 12 and the outer lip 13. The metal core 20 is made of iron (or stainless steel) embedded in the resin portion 11 and has a U-shaped cross section. Further, the other side of the main body 10 has a pair of holding lips 14, and the holding lip 14 holds the support seal portion 5 that supports the fixed glass 4.

  The cored bar 20 is embedded in a shape that can reach the front end part 11 b of the resin part 11. In the present embodiment, the metal core 20 is embedded so as to reach the front end surface 11a of the resin portion 11 (the boundary surface between the inner lip 12 and the outer lip 13). In FIG. 1 and FIG. 5, the code | symbol 3 shows a door glass.

  In the present embodiment, the resin part 11 is made of polypropylene or a material containing a filler such as talc, calcium carbonate, glass fiber in polypropylene, and the cored bar 20 is made of iron (or stainless steel). The present invention is not limited to this. For example, the resin portion 11 is made of ABS resin, AES resin, polyamide or nylon resin, polycarbonate, polyethylene, polystyrene, polyacetal, vinyl chloride resin, and talc, calcium carbonate, glass fiber, etc. It is also possible to form the core metal 20 with aluminum and an alloy thereof by using a material containing a filler.

  The glass run integrated division bar 1 according to the present embodiment includes a high-strength resin made of polypropylene and an iron (or stainless steel) cored bar 20 embedded therein. (The boundary surface between the inner lip 12 and the outer lip 13) is embedded in the whole, so that the linear expansion coefficient of polypropylene is about 10 times larger than that of iron (or stainless steel), but after extrusion molding. By cooling, the thin portion 42 due to the occurrence of sink marks is not formed at the tip portion 11b of the resin portion 11 (see FIG. 6). Thereby, since the whole resin part 11 can be formed in the same thickness, the glass run integrated division bar 1 which is excellent in appearance can be provided.

  In this embodiment, the cored bar 20 is embedded until it reaches the front end surface 11a of the resin portion 11 (the boundary surface between the inner lip 12 and the outer lip 13). For example, as shown in FIG. Even if the tip portion 20 a slightly protrudes from the tip surface 11 a of the resin portion 11 due to molding variation or the like of the cored bar 20, the protruding portion 20 a is covered by the base portion of the inner lip 12 or the outer lip 13. Therefore, the appearance is kept good.

  The cored bar 20 may be embedded until the tip 20a reaches the tip 11a of the resin part 11 as in this embodiment, or slightly on the tip 11a as shown in FIG. It is also possible to embed up to places that do not reach.

It is a side view which shows the rear door of the motor vehicle provided with the division bar. FIG. 2 shows a division bar and a glass run according to a conventional example, and is a sectional view taken along line XX of FIG. 1. FIG. 2 is a cross-sectional view taken along the line XX of FIG. 1, showing a glass run integrated division bar according to a conventional example. It is an enlarged view which shows the front-end | tip part of the resin part of the glass run integrated division bar shown in FIG. 3, and is a figure which shows the form cooled immediately after extrusion and after that. 1 shows an embodiment of a glass run integrated division bar according to the present invention, and is a cross-sectional view taken along line XX of FIG. It is an enlarged view which shows the front-end | tip part of the resin part of the glass run integrated division bar shown in FIG. 5, and is a figure which shows the form cooled just after extrusion and after that. In other embodiment of the glass run integrated division bar which concerns on this invention, it is an enlarged view which shows the front-end | tip part of the resin part. In still another embodiment of the glass run integrated division bar according to the present invention, FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Glass run integrated division bar 2 Rear door 3 Door glass 4 Fixed glass 5 Support seal part 10 Main body part 11 Resin part 11a Tip surface 11b Tip part 12 Inner lip 13 Outer lip 14 Holding lip 20 Core metal 20a Tip part 30 Division bar 31 Glass run 40 Glass run integrated division bar 41 Core metal 42 Thin wall part

Claims (2)

  This is a glass run integrated division bar in which a glass run is integrally provided on a division bar provided in the vertical direction at the rear part of the rear door (2) of the automobile, and is a resin portion having a substantially H-shaped cross section made of a highly rigid resin ( 11) from the front end surface (11a) of the inner lip (12) and the outer lip (13) projecting inwardly, respectively, and a metal part embedded in the resin part and having a U-shaped cross section The glass run integrated division bar, wherein the core metal is embedded in the tip end portion (11b) of the resin portion. This is a glass run integrated division bar in which a glass run is integrally provided on a division bar provided in the vertical direction at the rear part of the rear door (2) of the automobile, and has a substantially H-shaped cross section formed of a high-rigidity resin made of polypropylene. A main body (10) having an inner lip (12) and an outer lip (13) projecting inward from the front end surface (11a) of the resin part (11), and iron or stainless steel embedded in the resin part A glass run integrated division bar comprising a core bar (20) having a U-shaped cross section, wherein the core bar is also embedded in the tip part (11b) of the resin part.

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