Door weather strip

Abstract

To suppress rusting of a bolt or the like by preventing splashing of washing water to the bolt for fixing a base part of a door mirror or its surroundings through a gutter-shaped part.SOLUTION: A door weather strip 21 is fitted to a peripheral edge part of a door panel in a closed loop shape, and comprises: a fitting base part; a hollow seal part 9 provided in a vehicle inside end of the fitting base part and elastically contacted with a vehicle body panel when a door is closed; a sub-seal lip 11 provided at a tip of a support part located at a vehicle outside end of the fitting base part and elastically contacted with the vehicle body panel when the door is closed; and a first panel lip provided inside the sub-seal lip of the support part and contacted with a tip inner surface of the door panel. A gutter part 15 is provided between the sub-seal lip and the panel lip, and a gutter-shaped part 22 provided at a position of a front end side of the door panel and extending downward at a front position of an impact bolt 17 fixed at a lower end to the base part of the door mirror has a gutter 26 connected to the gutter part.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a door weatherstrip that is attached to a door panel of an automobile to form a seal between the door panel and a body panel, and more particularly to a door weatherstrip that changes the drainage path at the front end of a front door. [Background technology]

[0002] Door weatherstrips attached around the front doors of automobiles can be subject to high-pressure water, particularly in the area corresponding to the upper edge of the door sash, during a car wash or heavy rainfall, where rainwater can penetrate and run down the door panel through gaps created by the sealing lip of the door weatherstrip.

[0003] FIG. 1 is a side view of a front door of an automobile to which door weatherstrips of the present invention and conventional art are applied, viewed from the inside of the vehicle; FIG. 11 is a cross-sectional view taken along line HH in FIG. 1; FIG. 12 is an enlarged view of part X in FIG. 1 showing a conventional door weatherstrip; and FIG. 13 is an enlarged view of part I in FIG. 12.

[0004] As shown in FIG. 1, the door weatherstrip 1 is disposed in a closed loop around a front door 2 consisting of a door main body 3 and a door sash portion 4.

[0005] That is, as shown in FIG. 11 , the door weatherstrip 1 comprises a mounting base 8 which is attached and fixed around the periphery of a door panel 5 consisting of an inner panel 6 and an outer panel 7, for example by a clip not shown; a hollow seal portion 9 which is integrally formed at the inside end of the mounting base 8 and which elastically contacts the body panel 14 when the door is closed; a sub-seal lip 11 which is provided at the tip of a linear support portion 10 which is erected at the outside end of the mounting base 8, and whose tip portion 11a elastically contacts the body panel 14 or the window frame 30 of the fixed window glass 29 (inserted glass) when the door is closed, thereby covering and concealing the hollow seal portion 9; and a first panel lip 12 and a second panel lip 13 which protrude in two stages, upper and lower, from the outside side of the support portion 10 and whose respective tip portions 12a, 13a elastically contact the inner surface of the terminal portion 6a of the inner panel 6 and the inner surface of the hem flange of the terminal portion 7a of the outer panel 7.

[0006] The hollow seal portion 9 is formed with a substantially elliptical cross section and is molded with a substantially uniform width as a whole from a sponge rubber material with a lower specific gravity than the mounting base portion 8, and in the free state when the door is open, the tip portion 9a is formed to protrude in a substantially straight line toward the vehicle body panel 14.

[0007] Therefore, as mentioned above, when the door is closed, the tip ends 9a, 11a of the hollow seal portion 9 and the sub-seal lip 11 elastically contact the vehicle body panel 14 and the window frame 30, thereby sealing the opening in the vehicle body.

[0008] For example, when high-pressure water during a car wash or rainwater during a heavy downpour splashes on the portion corresponding to the upper edge of the door sash portion 4, the rainwater W enters the drain groove portion 15 formed between the sub-seal lip 11 and the upper first panel lip 12, and flows down through this drain groove portion 15 to the bottom of the vehicle body, as shown in FIG.

[0009] One such drainage structure for a door weatherstrip is known from the invention described in Patent Document 1 below, which was previously filed by the applicant of the present invention. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-228968 Summary of the Invention [Problem to be solved by the invention]

[0011] However, although the conventional door weatherstrip 1 is attached to the periphery of the front door 2 as shown in Fig. 1, near the impact bolt 17 that attaches the base portion 16a of the door mirror 16 provided at the front end of the front door 2, the sub-seal lip 11 and first panel lip 12, etc. are cut off above the impact bolt 17 as shown in Figs. 12 and 13. In other words, the sub-seal lip 11, etc. are cut off above the bolt head 17a so as not to interfere with the head 17a of the impact bolt 17 and to ensure a fitting space for a tool such as a box wrench used to tighten the impact bolt 17.

[0012] Therefore, water W that enters the drain groove 15 from the portion of the door weatherstrip 1 that corresponds to the upper edge of the door sash 4 and flows down along the first panel lip 12 to the front end of the front door 2 may directly splash onto the head 17a of the impact bolt 17 and its surroundings, as shown by the dashed-dotted arrows in Figures 12 and 13. As a result, rust is likely to form on the head 17a of the impact bolt 17 and its surroundings, and corrosion due to rust may progress over time.

[0013] The present invention was devised in consideration of the technical problems of the prior art, and one of its objects is to provide a door weatherstrip that can prevent water that flows down the drainage groove of the door weatherstrip from splashing on the bolts that secure the base of the door mirror and their surroundings by using a gutter-shaped portion, thereby suppressing the formation of rust. [Means for solving the problem]

[0014] In one aspect of the present invention, the door mirror is attached in a closed loop shape to the periphery of a door panel to which a base portion of a door mirror is fixed by bolts at the front end thereof, a mounting base fixed to a peripheral edge of the door panel; a hollow seal portion provided at an inner end of the mounting base and elastically contacting the vehicle body panel when the door is closed; a sub-seal lip provided at a tip of a support portion at an outer end of the mounting base and elastically contacting a vehicle body member when the door is closed; and a panel lip provided on the support portion more inward than the sub-seal lip and abutting against an inner surface of a terminal portion of the door panel, wherein a drain groove portion is provided between the sub-seal lip and the panel lip, a gutter-shaped portion extending from the lower end edges of the sub-seal lip and the panel lip at a position on the front end side of the door panel, the lower end of the gutter-shaped portion extending downward and forward of the bolt; The gutter-shaped portion has a drainage groove that is continuous with the drainage groove portion in the vertical direction, A space is formed between the gutter-shaped portion and the hollow seal portion, into which a tool for rotating the head of the bolt can be fitted, The space is open at the top without being covered by the trough-shaped portion. It is characterized by the following.

[0015] Therefore, for example, when high-pressure water from a car wash enters the drainage groove between the sub-seal lip and panel lip of the door weatherstrip and flows down, it is guided by the drainage groove of the gutter-shaped portion and flows down along the outer surface of the door panel. In other words, the water that flows down the drainage groove passes through the drainage groove of the gutter-shaped portion and flows down while avoiding the bolt installation position. This prevents water from adhering to the bolt or its surroundings, making it possible to prevent rust on the bolt or its surroundings. [Effects of the Invention]

[0016] According to the present invention, the drainage groove of the gutter-shaped part prevents water, such as water from a car wash, that runs down the door weatherstrip from getting onto the bolts that secure the base of the door mirror and their surroundings, thereby making it possible to suppress the formation of rust on the bolts and their surroundings. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a side view of a front door of an automobile to which the door weather strips of the present invention and the prior art are applied; [Figure 2] 2 is an enlarged view of a portion X in FIG. 1 showing an embodiment of a door weather strip according to the present invention. [Figure 3] FIG. 3 is an enlarged view of a portion Y in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 5] FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. [Figure 6] FIG. 3 is a cross-sectional view taken along line CC in FIG. 2. [Figure 7] FIG. 3 is a cross-sectional view taken along line DD in FIG. 2. [Figure 8] 2, and (b) is an enlarged view of the main part of (a). [Figure 9] FIG. 3 is a cross-sectional view taken along the line FF in FIG. 2. [Figure 10] 1 shows the lower part of the front end of the front door in this embodiment, with the water avoiding the door hinge. [Figure 11] FIG. 2 is a cross-sectional view taken along line HH in FIG. [Figure 12] FIG. 2 is an enlarged view of a portion X in FIG. 1 showing a conventional door weather strip. [Figure 13] FIG. 13 is an enlarged view of part I in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a door weather strip according to the present invention will be described in detail with reference to the drawings. The basic structure of the front door and door weatherstrip is the same as that of the conventional one, and therefore the common parts will be described with the same reference numerals.

[0019] 2 is an enlarged view of the X portion of FIG. 1 showing an embodiment of a door weatherstrip according to the present invention, FIG. 3 is an enlarged view of the Y portion of FIG. 2, FIG. 4 is a cross-sectional view taken along line AA of FIG. 2, FIG. 5 is a cross-sectional view taken along line BB of FIG. 2, FIG. 6 is a cross-sectional view taken along line CC of FIG. 2, FIG. 7 is a cross-sectional view taken along line DD of FIG. 2, FIG. 8(a) is a cross-sectional view taken along line EE of FIG. 2, FIG. 8(b) is an enlarged view of a main part of FIG. 8(a), and FIG. 9 is a cross-sectional view taken along line FF of FIG. 2.

[0020] 1, a front door 2 of a passenger car, which is a vehicle, has a door body 3 and a door sash portion 4 provided on an upper portion of the door body 3. The door body 3 and the door sash portion 4 are formed by flange-joining a terminal portion 6a of an inner panel 6 on the vehicle's inside side of the door panel to a terminal portion 7a of an outer panel 7 on the vehicle's outside side by hemming. As a result, a step groove 28 is formed between the edge of the bent terminal portion 7a of the outer panel 7 and the terminal portion 6a of the inner panel 6.

[0021] As shown in FIGS. 1 to 4, the door body 3 has a mounting surface 3a formed on the inner surface of the boundary with the door sash portion 4, to which a base portion 16a of a door mirror 16 is attached, and a bolt insertion hole 3b penetrating the inner panel 6 and the outer panel 7 is formed at a predetermined position on the mounting surface 3a (see FIG. 8(a)). An impact bolt 17, which is a bolt for fixing the base portion 16a, is inserted into the bolt insertion hole 3b. The impact bolt 17 has a hexagonal head 17a that seats on the edge of the bolt insertion hole 3b on the inner panel 6 side, and a shaft 17b that is inserted into the bolt insertion hole 3b and has a male thread formed on its outer periphery. In FIG. 4, reference numeral 29 denotes a fixed window glass that is fitted between the front door 2 and the windshield (not shown), reference numeral 30 denotes a window frame for the fixed window glass 29, and reference numeral 31 denotes an inner garnish on the vehicle interior side.

[0022] Further, below the mounting surface 3a of the door main body 3, a door hinge 18 is provided for opening and closing the front door 2 relative to the opening of the vehicle body.

[0023] A door weather strip 21 is attached in a closed loop shape around the periphery of the front door 2, which is made up of the door main body 3 and the door sash portion 4.

[0024] This door weatherstrip 21 is made of a rubber material such as ethylene-propylene-diene copolymer rubber (EPDM) or olefin-based thermoplastic elastomer (TPO), and as shown in Fig. 1, it includes an extruded portion 01 arranged in a straight portion, and molded portions 02 arranged in corners and in substantially V-shaped bent portions on the mounting surface 3a side where the base portion 16a of the door mirror 16 is attached. The extruded portion 01 is formed in a substantially straight shape by an extruder (not shown), while the molded portion 02 is formed in a bent shape by a mold device of an injection molding machine (not shown) in order to connect the terminal portions of adjacent extruded portions 01.

[0025] This door weatherstrip 21 has the same basic closed cross-sectional structure as the conventional one, and as shown in Figure 4, it comprises a mounting base 8 that is attached and fixed to the inner panel 6 with a clip (not shown), a hollow seal portion 9 that is formed integrally with the inner end of the mounting base 8 and that functions as the main seal portion by elastically contacting the body panel 14 from a substantially vertical direction when the door is closed, a support portion 10 that stands upright from the outer end of the mounting base 8, a sub-seal lip 11 that protrudes toward the outside of the vehicle from the tip of the support portion 10, and a first panel lip 12 and a second panel lip 13 that protrude toward the outside of the vehicle from the outer side surface of the support portion 10 and whose tip portions elastically contact the inner surfaces of the terminal portions 6a, 7a of the inner panel 6 and the outer panel 7.

[0026] The mounting base 8 is made of solid rubber material and has a substantially rectangular cross section. It is disposed along the outer periphery of the front door 2 including the door sash portion 4, and has a plurality of insertion holes (not shown) formed therethrough at predetermined positions in the longitudinal direction into which clips are inserted.

[0027] The hollow seal portion 9 has a substantially elliptical cross section and is made of a sponge rubber material with a lower specific gravity than the mounting base portion 8. When the door is open and in its free state, the tip portion 9a protrudes substantially linearly toward the body panel 14.

[0028] The support portion 10 stands straight from the outer end of the mounting base 8 and is made of the same solid rubber material as the mounting base 8.

[0029] The sub-seal lip 11 has a substantially L-shaped cross section and is made of a rubber material with a lower specific gravity than the mounting base 8. When the door is closed, the tip 11a elastically contacts the end surface of the body panel 14 on the roof side at the upper end of the front door 2, depending on its position, and elastically contacts the rear end surface of the window frame 30 of the fixed window glass 29 at the front end of the front door 2, thereby performing a sealing function.

[0030] The upper first panel lip 12 protrudes from the upper end of the support portion 10 toward the exterior of the vehicle and has a substantially horizontally shaped cross section. When the door weatherstrip 21 is attached to the door panel 5, its leading edge elastically contacts the inner surface of the hem flange at the terminal portion 7a of the outer panel 7, thereby providing a sealing function. Furthermore, when the leading edge of the first panel lip 12 is in elastic contact with the terminal portion 7a of the outer panel 7, a drainage groove 15 is formed between the first panel lip 12 and the sub-seal lip 11 along the longitudinal direction. This drainage groove 15 collects, for example, high-pressure water used for car washing or rainwater that has seeped in through a gap formed between the leading edge 12a of the first panel lip 12 and the leading edge 11a of the sub-seal lip 11, such as at the top edge of the front door 2, and drains it in the fore-and-aft direction of the vehicle body.

[0031] The second panel lip 13 on the lower side protrudes toward the outside of the vehicle from the lower end of the support part 10 near the mounting base 8, and like the first panel lip 12, when the door weatherstrip is installed, its tip elastically contacts the inner surface of the terminal part 6a of the inner panel 6, thereby providing a sealing mechanism.

[0032] As shown in FIGS. 3 and 8(a) and (b), the door weatherstrip 21 has a gutter-shaped portion 22 provided in the molded portion 02 on the mounting surface 3a side of the base portion 16a of the door mirror 16.

[0033] Specifically, at the front end of the door panel 5, as shown in Figures 6 and 7, the door weatherstrip 21 has a support portion 10 that extends forward of the front door 2, and a sub-seal lip 11 and a first panel lip 12 are provided at its tip, but further below these, as shown in Figure 8(a), the support portion 10, sub-seal lip 11, and first panel lip 12 do not exist, and instead a gutter-shaped portion 22 is provided that extends downward from the lower end of the sub-seal lip 11 and first panel lip 12.

[0034] As shown in Figures 2 and 3, this gutter-shaped portion 22 is integrally formed at the front end of the door panel 5, branching off from a position above the impact bolt 17 of the door weatherstrip 21, and its closed cross-sectional shape is formed to be approximately a horizontal U-shape.

[0035] That is, the gutter-shaped portion 22 has a lower end 22a positioned forward of the impact bolt 17 and extending downward to avoid the impact bolt 17, and as shown in Figures 8(a) and (b), has a flat base 23, a support lip 24 that is integral with the inboard end of the base 23 and has a tip 24a that abuts against the terminal portion 6a of the inner panel 6, and a guide lip 25 that is arranged at the outboard end approximately parallel to the support lip 24 and has a tip 25a that abuts near the folded edge of the hem flange of the terminal portion 7a of the outer panel 7.

[0036] The guide lip 25 is bent so as to have a substantially V-shaped cross section, and has a drainage groove 26 formed on its upper surface at a substantially central position in the width direction, i.e., at the bend point. The upper end of this drainage groove 26 is formed to be continuous in the vertical direction with the drainage groove portion 15 formed between the sub-seal lip 11 and the first panel lip 12, and the lower end is arranged so as to face a stepped groove 28 formed between the edge of the hem flange of the terminal portion 7a of the outer panel 7 and the end of the inner panel 6.

[0037] 2 and 3, a substantially inverted U-shaped space 27 is formed between the gutter-shaped portion 22 and the hollow seal portion 9, with the head 17a of the impact bolt 17 at its center. This space 27 is sized to allow a tool, such as a box wrench, to be fitted into the space 27, which rotates the head 17a of the impact bolt 17. In other words, the space 27 is designed to ensure a fitting space that does not interfere with the rotation of the box wrench.

[0038] [Functions and Effects of Door Weatherstrip According to This Embodiment] The effects of the door weather strip according to this embodiment will be described below.

[0039] FIG. 10 shows the lower part of the front end of the front door in this embodiment, showing the state in which the water has flowed down and avoided the door hinge.

[0040] When the car door 2 is closed, the hollow seal portion 9 of the door weatherstrip 21 and the tip portions 9a, 11a of the sub-seal lip 11 elastically contact the body panel 14, etc., effectively sealing the opening in the body. However, when high-pressure car wash water is sprayed onto the roof of the car, etc., the water W enters the drain groove portion 15 between the sub-seal lip 11 and the first panel lip 12 and flows down while being guided in the fore-and-aft direction of the car body.

[0041] Then, as shown by the dashed-dotted arrows in Figures 2 and 3 and in Figure 9, part of the water W that flows down the drain groove portion 15 toward the front end side of the front door 2 flows from the drain groove portion 15 into the drain groove 26 of the gutter-shaped portion 22, and then flows down this drain groove 26 into the step groove 28 between the terminal portion 6a of the inner panel 6 and the terminal portion 7a of the outer panel 7, and then further flows down this step groove 28 to the ground. In Figure 9, reference numeral 32 denotes the front fender.

[0042] As described above, water that flows down the drain groove portion 15 passes through the drain groove 26, and flows down while avoiding the head 17a of the impact bolt 17 and its surroundings. This prevents the impact bolt 17 and its surroundings from getting caught (adhering) and makes it possible to prevent rusting of the impact bolt 17 and its surroundings.

[0043] In particular, the height of the guide lip 25 of the gutter-shaped portion 22 is set by the base portion 23 and the support lip 24 to be approximately the same as the height of the head 17a of the impact bolt 17, so that water W passing through the drainage groove 26 of the guide lip 25 is even less likely to get on the head 17a, etc. This makes it possible to further prevent rusting of the head 17a, etc.

[0044] 9 and 10, water W that flows down from the drain groove 26 into the stepped groove 28 flows down to the ground while being guided by the stepped groove 28, and therefore does not get on the door hinge 18, which is located inside the stepped groove 28. As a result, it is possible to sufficiently prevent the door hinge 18 and its surroundings from freezing in cold weather such as winter.

[0045] Furthermore, a space 27 having an approximately inverted U shape centered on the head 17a of the impact bolt 17 is formed between the gutter-shaped portion 22 and the hollow seal portion 9, so that forward and reverse rotation of the box wrench tightening the impact bolt 17 is not hindered.

[0046] The gutter-shaped portion 22 is formed together with the door weatherstrip 21 when the door weatherstrip 21 is molded, which makes the molding process easier and more cost-effective than when the gutter-shaped portion 22 is molded separately.

[0047] The trough-shaped portion 22 has a simple structure in that it is an extension of a part of the door weatherstrip 21 and has a U-shaped cross section, which also makes the molding process easy.

[0048] The present invention is not limited to the configuration of the above-described embodiment, and for example, the gutter-shaped portion 22 can be formed to extend further downward, which allows the wastewater W to flow down more effectively while avoiding the impact bolt 17 and the door hinge 18. In addition, the cross-sectional shape of the gutter-shaped portion 22 can be formed into an even simpler structure, such as an inverted V shape. [Explanation of symbols]

[0049] 1·21...Door weather strip 2...Front door 3...Door body 4...Door sash 5...Door panel 6...Inner panel 6a...Terminal part 7...Outer panel 7a...Terminal part 8...Mounting base 9...Hollow seal part 10...Support part 11...Sub-seal lip 12...First panel lip 14...Body panel 15...Drainage groove section 16...Door mirror 16a...Base section 17...Impact bolt 18...Door hinge 22...Gutter-shaped part 23...Base 24...Support lip 25...Guide lip 26...Drainage ditch 27…Space part

Claims

1. The door mirror base is attached to the front end of the door panel in a closed loop around the periphery, with bolts. a mounting base fixed to a peripheral edge of the door panel; a hollow seal portion provided at an inner end of the mounting base and elastically contacting the vehicle body panel when the door is closed; a sub-seal lip provided at a tip of a support portion at an outer end of the mounting base and elastically contacting a vehicle body member when the door is closed; and a panel lip provided on the support portion more inward than the sub-seal lip and abutting against an inner surface of a terminal portion of the door panel, wherein a drain groove portion is provided between the sub-seal lip and the panel lip, a gutter-shaped portion extending from the lower end edges of the sub-seal lip and the panel lip at a position on the front end side of the door panel, the lower end of the gutter-shaped portion extending downward and forward of the bolt; The gutter-shaped portion has a drainage groove that is continuous with the drainage groove portion in the vertical direction, A space is formed between the gutter-shaped portion and the hollow seal portion, into which a tool for rotating the head of the bolt can be fitted, The door weather strip is characterized in that the space portion has an open upper portion that is not covered by the gutter-shaped portion.

2. A door mirror is attached in a closed loop shape to the periphery of a door panel to which the base of the door mirror is fixed by bolts at the front end, a mounting base fixed to a peripheral edge of the door panel; a hollow seal portion provided at an inner end of the mounting base and elastically contacting the vehicle body panel when the door is closed; a sub-seal lip provided at a tip of a support portion at an outer end of the mounting base and elastically contacting a vehicle body member when the door is closed; and a panel lip provided on the support portion more inward than the sub-seal lip and abutting against an inner surface of a terminal portion of the door panel, wherein a drain groove portion is provided between the sub-seal lip and the panel lip, a gutter-shaped portion extending from the lower end edges of the sub-seal lip and the panel lip at a position on the front end side of the door panel, the lower end of the gutter-shaped portion extending downward and forward of the bolt; The gutter-shaped portion has a drainage groove that is continuous with the drainage groove portion in the vertical direction, The drainage groove is arranged toward a stepped groove formed at the edge of a hem flange of an outer panel whose lower edge is joined to the end of the inner panel of the door panel.

3. The door weather strip according to claim 1 or 2, A door weatherstrip, wherein a portion of the door weatherstrip in which the gutter-shaped portion is provided is formed by molding.

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