JP5115370B2 - Automotive door seals - Google Patents

Description

  The present invention relates to a sealing member that is used for an automobile door and seals a door glass.

Conventionally, various structures for sealing a door glass of an automobile door using such a sealing member have been proposed.
For example, a structure is known in which a molding for fixing such a seal member is integrated with a door frame with a fastener such as a rivet (for example, see [Patent Document 1]).

However, such a configuration causes an increase in the number of parts, the number of assembly steps, and the cost.
Therefore, a configuration in which the seal member itself is attached to the door frame has been proposed (see, for example, [Patent Document 2] to [Patent Document 4]).

  As such a configuration, specifically, a structure (for example, see [Patent Document 2]) that brings out the bright molding on the door frame surface, a structure (for example, see [Patent Document 3]) that puts out rubber (EPDM) on the surface, There has been proposed a configuration for use in a sash door, that is, a door structure having a good appearance, in which a sheet metal surface does not appear on the surface of the door frame, and the width of the sash door or the press door is narrow and the flash feeling with the door glass is high.

  However, in the former structure, since the bright molding is a separate member and needs to be integrated, there is still a problem that the number of parts and assembly man-hours are increased, and the bright glitter is caused by the stress generated when integrating the bright molding. There is a problem that the flash feeling of the mall may be impaired.

  Further, in the latter structure, when the rubber is exposed on the surface of the sealing member, there is a problem that the gloss cannot be obtained, the appearance is often deteriorated due to the deterioration, and the yield is reduced due to foreign matters mixed in the rubber. In addition, there is a problem that if metal is used as a core material, it becomes heavy.

  On the other hand, a configuration in which a seal member is formed by integral molding and a thermoplastic resin is used as a core material has been proposed (see, for example, [Patent Document 4]). The problem can be solved.

JP-A-11-334367 JP 2005-297603 A JP-A-7-205657 JP 2007-276597 A

  However, even in such a configuration, when a rubber-containing material is used, if this material is exposed on the surface of the seal member, the gloss may decrease, or the appearance may deteriorate due to deterioration. There is a problem in that the yield may be reduced due to the inclusion of foreign matter. In recent years, the demand for recycling of automobile parts has increased. However, a material containing a thermosetting rubber is unsuitable for recycling, and there is a problem that it is difficult to meet such a demand.

  An object of this invention is to provide the sealing member of the motor vehicle door corresponding to these various problems resulting from containing rubber | gum.

In order to achieve the above object, an invention according to claim 1 is a seal member for an automobile door integrally including a fitting portion that fits into a door body and a seal portion that seals between the door body and the door glass. A door glass outer surface side portion of the seal portion and at least a part of the fitting portion; a run channel portion forming a part of the seal portion ; and the door glass outer surface of the core material. A bright film formed on a portion corresponding to the side and exposed to the outside, and a surface of the seal portion that is in contact with the door glass and having a surface that is higher in sliding performance than the run channel portion. and a sliding member layer, Sea motor vehicle door entirety including the said core and said run channel portion and bright film and the sliding member layer is formed by integrally molding a thermoplastic resin In the member.

According to a second aspect of the invention, the sealing member of a motor vehicle door according to claim 1, characterized in that said run channel portion is formed by a thermoplastic vulcanized elastomer.

A sealing member for an automobile door integrally including a fitting portion that fits into a door main body and a seal portion that seals between the door main body and the door glass, and at least the door glass outer surface side portion of the seal portion and the A core material forming at least a part of the fitting part; a run channel part forming a part of the seal part ; and a glitter film formed on a part of the core material corresponding to the door glass outer surface side and exposed to the outside. A sliding material layer provided at a position in contact with the door glass of the seal portion and having a surface having higher slidability with respect to the door glass than the surface of the run channel portion, and the core material and the run the whole comprising a channel portion and the bright film and said sliding member layer is in the sealing member of a motor vehicle door is formed by integrally molding a thermoplastic resin, it can be improved gloss Ri, is suppressed deterioration of appearance due to deterioration, with a decrease in the yield due to contamination of foreign substances is suppressed, excellent is easy appearance to improving the flash feeling that by the bright Fi Lum of the core material, also sliding The opening and closing load of the door glass can be reduced by the moving material layer. Furthermore, because it is formed by integral molding with a thermoplastic resin, assembly man-hours and costs are reduced, and recycling is easy . A seal member can be provided.

  Provided that the run channel portion is formed of a thermoplastic vulcanized elastomer, a car door seal member that is particularly excellent in flexibility and durability, and that can exhibit excellent airtightness, watertightness, and sound insulation is provided. can do.

  FIG. 1 shows an automobile door D to which a seal member for an automobile door to which the present invention is applied is attached. The automobile door D is attached to the vehicle body openings C1 and C2 provided on the left and right sides of the body B of the automobile C so as to be freely opened and closed (only the left side is shown in the figure). The automobile door D provided in the front vehicle body opening C1 and the automobile door D provided in the rear vehicle body opening C2 are provided in the automobile C as a front door and a rear door, respectively. Each D has a door glass G for communicating / blocking the space inside and outside the automobile C, and a door body D1 provided with a window W opened and closed by the door glass G. It has a sash portion D2 as a door frame that forms a window frame that occupies the upper portion and forms a window W, and a motor as driving means (not shown) that drives the door glass G. In this embodiment, the automobile door D will be described without distinguishing between a front door and a rear door. The figure shows a state in which the door glass G is moved to the top dead center and closed, and the space inside and outside the automobile C is blocked.

  As shown in FIG. 2, a run channel 10 as a seal member of an automobile door to which the present invention is applied is attached to the upper edge of the sash portion D2 and is interposed between the sash portion D2 and the door glass G. is doing. The run channel 10 is provided to ensure sufficient airtightness, watertightness, and sound insulation of the space inside and outside the automobile C in a state where the doorglass G is closed and the doorglass G is in close contact. The run channel 10 extends in the left-right direction in FIG. 1 and in a direction perpendicular to the paper surface in FIG. 2, and the cross section perpendicular to the extending direction is substantially the same as that shown in FIG. It has the same shape.

  In the figure, an arrow Z indicates the opening / closing direction of the door glass G. The direction Z is substantially parallel to the vertical direction although it depends on the attitude of the automobile C. In the figure, the door glass G is in a state of occupying the vicinity of the top dead center, and the upper edge portion is in a state of facing the run channel 10.

  In the figure, reference numeral 50 is attached to a portion (a roof side rail or the like) of the body B facing the sash portion D2, and is in close contact with the sash portion D2 when the automobile door D is closed. The weather strip provided for ensuring sufficient airtightness, watertightness, and sound insulation of the space inside and outside the automobile C by closing C2 is shown.

  In the figure, the run channel 10 and the weather strip 50 are in a state where they are not acting other than the stress acting on them when they are attached to the sash portion D2 and the body B, respectively.

  The weather strip 50 is attached to the body B so as to be fitted to the body flange B1 that forms a part of the body B, has a U shape, and generates a fitting force to the body flange B1. And a rubber run channel portion 52 surrounding the metal core 51. The run channel portion 52 is located on the inner side of the cored bar 51 and has a lip part 53 with improved adhesion and unity with the body flange B1, and an adhesiveness between the sash part D2 of the cored bar 51 and the sash part D2. And a hollow lip portion 54 having an increased height. The weather strip 50 and the run channel 10 constitute a weather strip structure of the automobile C.

  The run channel 10 is attached to the sash portion D2 in a manner to be fitted to the door flange D3 that forms a part of the sash portion D2, and the fitting portion 11 that generates a fitting force to the door flange D3; It has the seal part 12 which seals between the sash part D2 and the door glass G. As will be described later, the fitting portion 11 and the seal portion 12 have a portion that partially overlaps in the Z direction.

  The run channel 10 is made of a hard thermoplastic resin that forms part of the seal part 12 and part of the fitting part 11, specifically, a polypropylene core 13, and thermoplastic that forms part of the seal part 12. It has a run channel portion 14 made of resin, specifically, a TPV made of thermoplastic vulcanized elastomer, and a weather strip portion 15 made of TPV having the same composition as the run channel portion 14.

  As shown in the figure, the core member 13 has a shape such that the F-shape is reversed left and right in a cross section perpendicular to the extending direction of the run channel 10. 11 and a U-shaped portion 13a having a U-shape, and a bottom portion 13a1 of the U-shaped portion 13a provided in the seal portion 12 and extending in a direction in which the door glass G exists in the Z direction. And an extending portion 13b located on the outer surface side portion.

  The U-shaped portion 13 a forms part of the fitting portion 11, and the extending portion 13 b forms a portion located on the outer surface side portion of the door glass G of the seal portion 12. The extending portion 13b is provided for improving the retaining property of the door glass G. As will be described in detail later, the run channel 10 is molded in a state in which the core material 13 is extruded and then extruded again using the core material 13 so that other portions are integrated with the core material 13. The

  The run channel portion 14 is integrated with the distal end edge of the extended portion 13b and is positioned on the outer surface side portion of the door glass G, and the side wall 13a2 on the side of the U-shaped portion 13a where the extended portion 13b is provided. And an inner lip 14b located on the inner surface side portion of the door glass G.

  The weather strip portion 15 is integrated with the inside of the U-shaped portion 13a to improve adhesion and integrity with the door flange D3. The weather strip portion 15 is integrated with the lip portion 15a on the body B side of the U-shaped portion 13a. It has a lip portion 15b located outside the side wall 13a3 and having improved adhesion to the body B.

The fitting part 11 is comprised by the part which exists in the presence direction of the U-shaped part 13a in the Z direction among the core material 13 and the weather strip part 15. FIG. The seal portion 12 is configured by a portion on the door glass G side from the end surface position L on the door glass G side of the door flange D3 in the Z direction among the core material 13, the run channel portion 14, and the weather strip portion 15. Therefore, the overlapping range of the fitting part 11 and the seal part 12 is a range from the outer surface position of the side wall 13a2 to the end surface position L in the Z direction. This overlapping portion is a portion having both a fitting function and a sealing function, and the overlapping portion is downsized in the Z direction.

  The seal portion 12 has a sliding material layer 16 having a surface that is higher in slidability with respect to the door glass G than the surface of the run channel portion 14 at a portion where the door glass G abuts. Specifically, the position of the sliding material layer 16 is a portion where the inner lip 14b is not provided among the tip of the outer lip 14a, the tip of the inner lip 14b, and the outer wall of the side wall 13a2.

  The material of the sliding material layer 16 is the same as that of the run channel portion 14 and the weather strip portion 15 and is made of a thermoplastic resin, specifically, TPV which is a thermoplastic vulcanized elastomer. The slidability is adjusted to be higher than that of the TPV constituting the portion 14 and the weather strip portion 15. As a result, the driving resistance of the door glass G is reduced, which contributes to a reduction in the output and power consumption of the motor.

  The run channel 10 of the present embodiment also has a glitter film 17 integrally formed on a portion of the core member 13 exposed to the outside, that is, a portion that is noticeable when the automobile door D is closed or opened / closed. Has improved. The arrangement position of the glitter film 17 is specifically a portion of the core member 13 corresponding to the outer surface side of the door glass G, that is, a portion extending from the outer surface of the bottom portion 13a1 to the outer surface of the side wall 13a3.

  In addition, the arrangement | positioning position of the brightness | luminance film 17 attaches importance to the external appearance in the state which closed the motor vehicle door D, and should just include the outer surface of the bottom part 13a1 of the core material 13 at least. However, when the formation accuracy of the outer surface of the bottom portion 13a1 is sufficiently high and the appearance is excellent only by it, the glitter film 17 may be omitted. By including the adjusting agent, it is possible to give the core material 13 itself a desired color and gloss, and this can be exposed to improve the appearance.

  The run channel 10 having the above-described configuration is formed by extruding the core material 13 having the above-described shape and then extruding again using the core material 13, so that the run channel portion 14, the weather strip portion 15, the sliding The material layer 16 and the glitter film 17 are molded in a state of being integrated with the core material 13. Since it is integrally molded, assembly man-hours and costs are suppressed. The core member 13 itself is also integrally molded with the U-shaped portion 13a and the extended portion 13b, so that the door glass G is reliably held by the extended portion 13b.

  The core material 13, the run channel portion 14, the weather strip portion 15, the sliding material layer 16, and the glitter film 17 constituting the run channel 10 are all made of resin, particularly thermoplastic resin, and the run channel 10 is entirely made of resin, particularly It is made of a thermoplastic resin, does not contain a thermosetting resin such as rubber, has a good compatibility with molding, is recyclable, and meets recent requirements for recycling automobile parts.

  Further, since it does not contain rubber, it is possible to obtain gloss by molding, and it is possible to suppress a decrease in appearance due to deterioration, and a decrease in yield due to mixing of foreign matters into the rubber does not occur. Even if the core member 13 is configured to be exposed to the outside, it does not rust and has a long life. Even when the bright film 17 is provided, the run film 10 is inexpensive and has a high flash feeling because it is integrally formed.

Because it is molded entirely from resin, it is easier to bend than when it contains a metallic member such as a metal core, and it does not require bending to match the design of the car C and car door D. Costs including stages are constrained. Since all the resin is molded, the so-called dong sound when the door glass G reaches top dead center and comes into contact with the run channel 10 is buffered by this resin itself. The run channel lip portion as a countermeasure is unnecessary, the width in the X direction is suppressed, the size is small, the cost is suppressed, and the appearance is good.

  Since TPV is soft and elastic, it is particularly excellent as a material for the run channel portion 14, the weather strip portion 15, and the sliding material layer 16. The thermoplastic resin needs to be integrated by spraying on rubber such as EPDM. However, since it can be integrally molded with the thermoplastic resin as described above, it is effective for cost reduction.

  In the molded state, the run channel 10 is moved in the X direction substantially perpendicular to the Z direction with the opening side of the U-shaped portion 13a facing the door flange D3 side, and the fitting portion 11 is fitted to the door flange D3. Positioning is completed with a simple operation. As the edge of the body B is curved along the upper edges of the vehicle body openings C1 and C2, the shape of the door flange D3 also curves in the left-right direction in FIG. 1 and in the direction perpendicular to the paper surface in FIG. Therefore, this attachment operation is performed so that the run channel 10 follows the curve shape. In order to facilitate such deformation of the run channel 10, the run channel 10 may be provided with slits at appropriate positions.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments, and the present invention described in the claims is not specifically limited by the above description. Various modifications and changes are possible within the scope of the above.

  For example, the core material must include at least the door glass outer surface side portion of the seal portion for holding the door glass, but the door glass inner surface side portion of the seal portion is required to improve the door glass retainability. You may have. Although the fitting portion includes the weather strip portion 15 in the above-described form, for example, if the fitting with the door flange D3 is reliable only with the core material, the core is constituted by only the core material. The material only needs to form at least a part of the fitting portion.

  The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

It is the schematic which showed the outline of an example of the motor vehicle which can attach the sealing member of the motor vehicle door to which this invention is applied. It is a front sectional view of a seal member of an automobile door to which the present invention is applied and its periphery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Seal member 11 Fitting part 12 Seal part 13 Core material 14 Run channel part 16 Sliding material layer 17 Bright film G Door glass D2 Door main body

Claims (2)

An automotive door seal member integrally having a fitting portion that fits into the door body and a seal portion that seals between the door body and the door glass,
A core material forming at least a part of the fitting portion and the door glass outer surface side portion of the seal portion;
A run channel part forming part of the seal part ;
A glittering film formed on a portion corresponding to the outer surface of the door glass and exposed to the outside,
A sliding material layer provided at a position where the seal portion is in contact with the door glass and having a surface having a higher slidability with respect to the door glass than the surface of the run channel portion ,
The automobile door seal member is formed by integrally molding a thermoplastic resin as a whole including the core material, the run channel portion, the glitter film, and the sliding material layer . In the automobile door seal member according to claim 1,
A seal member for an automobile door, wherein the run channel portion is formed of a thermoplastic vulcanized elastomer .

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