JP2012011873A - Door structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door structure of a vehicle capable of enhancing sealing performance between a weather strip and a window glass, enhancing wiping performance of the window glass, enhancing appearance quality and preventing invasion of wind and noise into a cabin.SOLUTION: In the door structure of the vehicle including the window glass 4 formed in a convex arc shape on a cabin outer side W2 in a cross-section and a window frame 7 of a door inner panel 6 enclosing the window glass 4, an attachment flange 8 is provided at a lower part of the window frame 7, the attachment flange 8 is formed in a convex arc shape on the cabin outer side W2 in the cross-section, an attachment base part 10 of the weather strip 9 is attached to be externally fitted to the attachment flange 8 and the attachment flange 8 is formed in a recessed and projecting shape where recessed parts 15 and projecting parts 13 and 14 are alternately arranged in a longitudinal direction of the lower part of the window frame 7.

Description

The present invention
A window glass formed in a circular arc shape convex to the outside of the passenger compartment in the cross section;
A window frame of a door inner panel surrounding the window glass,
A mounting flange is provided at the bottom of the window frame,
The mounting flange is formed in a circular arc shape that protrudes outward from the passenger compartment in a cross section corresponding to the window glass,
The present invention relates to a vehicle door structure in which a mounting base portion having a U-shaped cross section of a weather strip is externally fitted to the mounting flange.

In recent years, automobile window glass is not only formed in a circular arc shape with a large curvature radius on the outer side in the longitudinal section, but also on the outer side in the cross section to improve the appearance quality in terms of vehicle design. It is formed in an arc shape with a large convex radius of curvature.
Conventionally, in the vehicle door structure described above, as disclosed in Patent Document 1, the mounting flange is formed on a substantially flat surface over the entire length in the vehicle front-rear direction (see Patent Document 1). Since such a flat mounting flange has low rigidity, an inner reinforcement is disposed on the outer side of the mounting flange.

JP 2007-118882 A

  As mentioned above, when the window glass is formed in a convex arc shape outside the vehicle compartment not only in the longitudinal section but also in the transverse section, the mounting flange (belt line part flange) at the bottom of the window frame is the shape of the window glass. Is formed in a circular arc shape that protrudes outward from the vehicle compartment in a cross section corresponding to the window glass.

  On the other hand, the weather strip whose mounting base is fitted onto the mounting flange is an extruded product, and thus is formed in a straight line. Therefore, it is conceivable to form the weather strip in a convex arc shape on the outer side of the passenger compartment in the cross section corresponding to the mounting flange. However, according to this means, the weather strip needs to be bent, and the manufacturing cost increases.

  Further, the gap between the pair of side walls of the mounting base portion having a U-shaped cross section of the weather strip needs to have a length (width) that can ensure the strength of the extrusion mold. The width of the gap is set to be somewhat longer than the plate thickness of the mounting flange, a gap is formed between the mounting flange disposed between both side walls and one side wall, and a lip protruding from the inner surface of one side wall is formed. It is pressed against the mounting flange. In particular, the gap between the tip of the lip protruding from the inner surface of one side wall and the other side wall is the smallest, but a certain degree is absolutely necessary to ensure the strength of the extrusion mold. Therefore, if the dimension of the mounting flange in the plate thickness direction is small, it is difficult to increase the pressure contact force of the lip protruding from the inner surface of the side wall to the mounting flange.

  According to the above-described conventional structure, the mounting flange is formed in a substantially flat surface over the entire length in the vehicle front-rear direction. 6 (b), the weather strip 9 does not follow the mounting flange 8 due to the elastic restoring force of the weather strip 9, so that the radius of curvature of the weather strip 9 is increased. The radius of curvature of the mounting flange 8 was larger. That is, the thickness of the mounting flange in the plate thickness direction (the holding margin of the weather strip mounting base) is secured to some extent by the thickness of the inner reinforcement, but it is not sufficient. It was not possible to obtain a pressing force against the mounting flange of the lip protruding from the inner surface of the weather strip side wall sufficient to follow. Reference numeral 16 denotes an engaging claw of the mounting flange 8 that engages with the engaging portion of the weather strip 9.

  As a result, the weather strip did not follow the curved surface of the wind glass, and the sealing performance between the weather strip and the wind glass and the wiping performance of the wind glass were not uniform. In addition, the alignment of the window glass curved surface and the door trim and the weather strip that are spaced apart from each other becomes uneven, and the appearance quality deteriorates (particularly in the case of the structure in which the alignment between the edge of the weather strip and the door trim is exposed), and the The sealing performance between the strip and the door trim also deteriorated, and the invasion of wind and sound into the passenger compartment increased, and the merchantability was likely to deteriorate.

  In addition, according to the above-described conventional technology, since the two parts of the inner panel and the inner reinforcement are combined, the mounting flange along the curved surface of the wind glass from the accuracy of the shape of each part and the influence of distortion caused by welding. It was difficult to get the accuracy of the shape. And the production cost increased and the weight increased due to the provision of the inner reinforcement.

  The present invention has been made in view of the above circumstances, and its purpose is to improve the sealing performance between the weather strip and the wind glass, and to improve the wiping performance of the wind glass by the weather strip. It is possible to evenly align with the door trim and improve the appearance quality, and by improving the sealing performance between the weather strip and the door trim, it can prevent the intrusion of wind and sound into the vehicle interior A vehicle door that can improve the merchantability and can produce a weatherstrip only by extrusion without adding a bending process, and can reduce the manufacturing cost and weight by omitting inner reinforcement. In providing the structure.

The feature of the present invention is that
A window glass formed in a circular arc shape convex to the outside of the passenger compartment in the cross section;
A window frame of a door inner panel surrounding the window glass,
A mounting flange is provided at the bottom of the window frame,
The mounting flange is formed in a circular arc shape that protrudes outward from the passenger compartment in a cross section corresponding to the window glass,
A weather strip is a vehicle door structure in which a U-shaped mounting base of a weatherstrip is externally fitted to the mounting flange,
The mounting flange is formed in a concavo-convex shape in which concave portions and convex portions are alternately arranged in the longitudinal direction of the lower portion of the window frame. (Claim 1)

According to this configuration, since the mounting flange is formed in a concavo-convex shape in which the concave portion and the convex portion are alternately arranged in the longitudinal direction of the lower portion of the window frame, the dimension in the plate thickness direction of the mounting flange (the mounting base of the weather strip) Can be secured sufficiently by the concave and convex portions of the mounting flange.
As a result, the weather strip mounting base can be firmly fixed (held) to the mounting flange.
Thereby, as shown in the schematic diagram of FIG. 6 (a), the weather strip 9 can be firmly placed on the mounting flange 8, and the weather strip 9 is an extruded product and has a product shape linear in the longitudinal direction. The followability to the shape of the mounting flange 8 can be improved. In FIG. 6A, reference numeral 13 denotes a convex portion of the mounting flange 8, 15 denotes a concave portion, and 16 denotes an engaging claw of the mounting flange 8 that engages with an engaging portion of the weather strip 9.
And the weather strip can be made to follow the curved surface of the wind glass, the sealing property between the weather strip and the wind glass can be improved, and the wiping property of the wind glass can be kept uniform, The wiping property of the wind glass by the weather strip can be improved.
In addition, the weather strip and the door trim can be evenly aligned in the longitudinal direction, the appearance quality can be improved, the sealing property between the weather strip and the door trim can be improved, and the Intrusion of wind and sound from the mating part of the strip and the door trim can be prevented, and the merchantability can be improved. Wind and sound enter from the inside of the door through the inner panel and the door trim.
And, since the mounting flange is formed in a concavo-convex shape, the mounting flange of the door inner panel is reinforced and the rigidity of the belt line part is improved, so there is no need to provide inner reinforcement in the belt line part, and the production cost / weight Can be reduced.
Further, the weather strip attachment holding force can be stabilized. Furthermore, when the weather strip is attached to the mounting flange at the base of the weather strip, it is difficult for the weather strip to roll around the longitudinal axis of the mounting flange, so that the weather can be applied when and after the door trim is assembled to the weather strip. The posture of the strip can be stabilized. Thereby, sealing performance and appearance quality can be further improved. (Claim 1)

In the present invention,
On the convex part of the mounting flange that is convex to the outside of the passenger compartment, an engagement claw part that protrudes to the outer side of the passenger compartment is cut and raised,
When the first engaging portion formed on the side wall outside the passenger compartment of the weather strip attachment base is engaged with the engagement claw portion, the weather strip can be firmly fixed by the attachment flange. Since the engaging claw portion protrudes outward from the convex portion of the mounting flange that protrudes outward from the passenger compartment, the dimension of the mounting flange in the plate thickness direction (the holding margin of the weather strip attachment base) is further increased. It can be easily secured. (Claim 2)

In the present invention,
When the second engaging portion extending from the upper end portion of the weather strip mounting base is clamped and fixed in the vertical direction to the clamping portion provided in the door trim, the following effects can be obtained. (Claim 3)

Since the second engaging portion extends from the upper end portion of the weather strip mounting base, the second engaging portion is easily visible when the second engaging portion is clamped and fixed by the clamping portion provided on the door trim. Easy to assemble. Therefore, there is no possibility that the weather strip is accidentally pushed by the door trim during assembly and the weather strip is not adversely affected.
Further, even when an error occurs in the curvature of the weather strip attached to the mounting flange of the door inner panel and the same curvature of the door trim, it is absorbed (the holding part moves the second engaging part up and down). Since the door trim is attached, the installation state of the weather strip to the mounting flange will not be affected, so stable weather strip performance is maintained. can do. (Claim 3)

In the present invention,
When the edge of the door trim comes into contact with the lip extending from the upper end of the weather strip mounting base, the following action can be achieved. (Claim 4)

  If there is an error in the curvature of the cross section of the weather strip attached to the mounting flange of the door inner panel and the same curvature of the door trim, the bending allowance of the lip itself extending from the upper end of the mounting base of the weather strip Can be absorbed. Accordingly, the attachment of the door trim does not affect the attachment state of the weather strip to the attachment flange, so that stable weather strip performance can be maintained. And since the lip covers the edge (small edge) of a door trim, an external appearance improves. In addition, even when the windshield is fully open, the edge of the door trim is touched by a person. Improves. (Claim 4)

According to the present invention,
The sealability between the weather strip and the wind glass can be improved, the wind glass can be wiped off by the weather strip, and the door trim can be uniformly aligned to improve the appearance quality. By improving the sealing performance between the weather strip and the door trim, it is possible to prevent the intrusion of wind and sound into the passenger compartment, improve the product quality, reduce the manufacturing cost, and reduce the weight. The vehicle door structure can be provided.

Perspective view of door inner panel and weather strip as seen from inside the vehicle cabin (A) is a perspective view of the door inner panel seen from the vehicle interior side, (b) is a perspective view of the door inner panel seen from the vehicle interior side. Mounting flange of door inner panel and perspective view around it as seen from outside of vehicle compartment Mounting flange of door inner panel and perspective view around it as seen from the vehicle interior side Longitudinal section of weather strip, mounting flange with weather strip and door trim (A) is a schematic diagram showing the operation of the mounting flange, (b) is a schematic diagram showing the operation of the conventional mounting flange.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
In the figure, Fr indicates the vehicle front side, and Rr indicates the vehicle rear side.
FIG. 1 shows a door inner panel 6 of the right front door of the automobile. The front door includes a door panel having a window opening formed in an upper portion thereof, and a door trim 3 (see FIG. 5) as an interior material that covers a door panel portion below the window opening from the vehicle interior side W1. A window glass 4 (see FIG. 5) that can be raised and lowered is disposed in the window opening of the door panel.

  The door panel includes a door outer panel (hereinafter referred to as “outer panel”) and a door inner panel 6 (hereinafter referred to as “inner panel 6”). The outer panel and the inner panel 6 are welded to each other at the periphery, and the panel portions radially inward from the periphery are opposed to each other with a space therebetween. The door trim 3 is attached to the inner panel 6 with a plurality of clips provided on the back side of the design surface.

  The wind glass 4 is formed in a circular arc shape having a large curvature radius on the vehicle exterior side W2 in the longitudinal section, and is formed in a circular arc shape having a convex curvature radius on the vehicle exterior side W2 in the cross section. The surface is formed into a three-dimensional curved surface. Thereby, the appearance quality of the window glass 4 is improved in the design of the vehicle.

  A mounting flange 8 is provided at the lower part of the window frame 7 of the inner panel 6 surrounding the window glass 4, and an inner weather strip 9 (weather strip) formed of a rubber-like elastic body (two layers of a hard part and a soft part). And a mounting base 10 (see FIG. 5) having a U-shaped cross section of “weather strip 9” is attached to the mounting flange 8 by being externally fitted. Although not shown, a mounting flange is provided at the lower part of the window frame of the outer panel surrounding the window glass 4, and a mounting base portion having a U-shaped cross section of the outer weather strip is attached to the mounting flange by external fitting.

[Structure of weather strip 9]
As shown in FIGS. 1 and 5, the weather strip 9 is extruded in a straight line, and the mounting base 10 (hard portion) having a U-shaped cross section is open on the lower side. And the cross-sectional triangle which protrudes in the side wall 12 side of the vehicle interior side W1 in the lower end part of the side wall 11 (side wall 11 of the vehicle interior outer side W2) by the side of the wind glass 4 among the both side walls 11 and 12 which the mounting base 10 mutually opposes. An engaging convex portion 26 (corresponding to a first engaging portion) having a shape is formed. In FIG. 5, the hatched portion of the weather strip 9 indicates a soft portion, and the other portions of the weather strip 9 are hard portions.

  In addition, a pair of upper and lower first lips 21 that are in close contact with the window glass 4 are provided on the side wall 11 of the mounting base 10 on the side of the wind glass 4 (vehicle exterior W2), and the width of the upper wall (upper end) of the mounting base 10 A second lip 22 (corresponding to the lip) extends upward from the center in the direction, and an engagement piece 23 (corresponding to the second engagement portion) extends from the upper end of the side wall 12 of the mounting base 10 on the vehicle interior side W1. It extends to the inner side W1.

  The upper first lip 21 (soft part) extends obliquely upward from the top of the side wall 11 on the side of the wind glass 4 of the mounting base 10 and is inclined so as to be positioned upward as the vehicle interior outside W2. The lower first lip 21 (soft portion) extends obliquely upward from the lower end portion of the side wall 11 of the mounting base 10 on the wind glass 4 side, and is inclined so as to be positioned upward as the vehicle interior outside W2. The upper first lip 21 and the lower first lip 21 are positioned substantially parallel to each other.

  In the longitudinal section, the second lip 22 is bent in the shape of a convex “<” shape on the outer side W2 of the passenger compartment. The edge 3T (small edge) of the door trim 3 is pressed against the upper end portion (soft portion) of the second lip 22 from the vehicle interior side W1. The upper end portion of the door trim 3 is bent in a circular arc shape in the outer side W2 of the passenger compartment.

The engaging piece 23 (hard portion) is bent in a "<" shape that falls to the vehicle interior side W1 with respect to the second lip 22 in the longitudinal section, and the tip end side of the bending point is closer to the vehicle interior side W1. It inclines so that it may be located upwards. The inclination angle of the engagement piece 23 is set small, and the tip end side is slightly inclined with respect to the horizontal direction from the bending point. The distal end side of the engagement piece 23 is clamped and fixed in the vertical direction to the clamping portion 27 of the door trim 3. The sandwiching portions 27 are partially arranged at intervals in the vehicle front-rear direction (longitudinal direction of the weather strip 9).
The clamping part 27 is formed in a U-shaped cross-section with the vehicle interior outside W2 open, and includes a pair of upper and lower clamping pieces 27A and 27B. The sandwiching pieces 27 </ b> A and 27 </ b> B may be arranged so as to be adjacent to each other in the longitudinal direction of the weather strip 9 (the vehicle longitudinal direction). The front ends of the outer side W2 of the sandwiching pieces 27A and 27B are inclined so as to be positioned lower toward the outer side W2.

  Further, a pair of upper and lower third lips 24 (soft portions) projecting from the inner surface of the side wall 12 on the vehicle interior side W1 of the mounting base 10 toward the side wall 11 on the side of the wind glass 4 are positioned higher toward the projecting end side. It is provided in an inclined posture. The third lip 24 is in pressure contact with the surface on the vehicle interior side W1 of the mounting flange 8 fitted between the side walls 11 and 12 of the mounting base 10.

[Structure of mounting flange 8 of inner panel 6]
As shown in FIGS. 2 to 4, the mounting flange 8 of the inner panel 6 is formed in an arc shape having a large curvature radius on the outer side W <b> 2 of the vehicle interior in a cross section corresponding to the window glass 4, and a recess 15. And the convex parts 13 and 14 are formed in the uneven | corrugated shape alternately arranged in the longitudinal direction of the lower part of the said window frame 7. As shown in FIG. Specifically, the wide convex portion 13 whose width in the vehicle front-rear direction (longitudinal direction of the window frame 7) is longer than the height dimension of the mounting flange 8, and the concave portion 15 whose width is slightly longer than the height dimension of the mounting flange 8. And the uneven | corrugated pattern in which the said convex part 14 whose width | variety is shorter than the height dimension of the attachment flange 8, and the said recessed part 15 are repeated in this order in the longitudinal direction of the window frame 7 is formed in the attachment flange 8. .

  And the engaging claw part 16 which protrudes to the vehicle interior outer side W2 is cut and raised in the longitudinal direction center part of the said some wide convex part 13, respectively. The engaging claw portion 16 is inclined so that the lower side is positioned on the vehicle interior outside W2. Engaging protrusions 26 formed on the side wall 11 of the attachment base 10 of the weather strip 9 on the side of the wind glass 4 (vehicle compartment outer side W2) engage with the engaging claw 16 from below.

  According to said structure, since the said attachment flange 8 is formed in the uneven | corrugated shape from which the recessed part 15 and the convex parts 13 and 14 are located in a line by turns in the vehicle front-back direction, the dimension (weather strip) of the attachment flange 8 9 can be secured sufficiently by the concave and convex portions of the mounting flange 8. As a result, the mounting base 10 of the weather strip 9 can be firmly fixed (held) to the mounting flange 8.

  Thereby, as shown in the schematic diagram of FIG. 6 (a), the weather strip 9 can be firmly placed on the mounting flange 8, and the weather strip 9 is an extruded product and has a product shape linear in the longitudinal direction. The followability to the shape of the mounting flange 8 can be improved.

And the weather strip 9 can be made to follow the curved surface of the wind glass 4, the sealing performance between the weather strip 9 and the wind glass 4 can be improved, and the wiping property of the wind glass 4 is kept uniform. Thus, the wiping property by the weather strip 9 can be improved.
Further, the alignment with the door trim 3 can be made uniform in the longitudinal direction, the appearance quality can be improved, the sealing performance between the weather strip 9 and the door trim 3 can be improved, and the weather can be improved. Intrusion of wind and sound from the mating portion of the strip 9 and the door trim 3 can be prevented, and the merchantability can be improved.

  Since the mounting flange 8 is formed in a concavo-convex shape, the mounting flange 8 of the inner panel 6 is reinforced and the rigidity of the belt line portion is improved, so that it is not necessary to provide an inner reinforcement in the belt line portion.・ Weight can be reduced.

  Moreover, the attachment holding force of the weather strip 9 can be stabilized. Further, when the weather strip 9 is attached to the attachment flange 8 of the attachment base 10, the weather strip 9 is difficult to roll around the longitudinal axis of the attachment flange 8, and the door trim 3 is assembled to the weather strip 9. The posture of the weather strip 9 can be stabilized when and after assembly. Thereby, sealing performance and appearance quality can be further improved.

  Further, the engagement protrusion 26 formed on the side wall 11 of the vehicle exterior W2 of the attachment base 10 of the weather strip 9 engages with the engagement claw 16, so that the weather strip 9 is strengthened by the attachment flange 8. Can be fixed to.

Since the engagement piece 23 extends from the upper end portion of the side wall 12 on the vehicle interior side W1 of the mounting base 10 of the weather strip 9 to the vehicle interior side W1, the engagement piece 23 is held by the clamping portion 27 provided on the door trim 3. The engagement piece 23 is easily visible and easy to assemble. Therefore, the weather strip 9 is not accidentally pushed by the door trim 3 at the time of assembly, and the attachment state of the weather strip 9 is not adversely affected.
Further, even if an error occurs between the curvature in the cross section of the weather strip 9 attached to the attachment flange 8 of the inner panel 6 and the same curvature of the door trim 3, it is absorbed (the holding portion 27 is an engagement piece). 23 has a degree of freedom in the vehicle width direction because it is sandwiched in the vertical direction), and the attachment of the door trim 3 does not affect the attachment state of the weather strip 9 to the attachment flange 8, so that a stable The performance of the strip 9 can be maintained.

  When an error occurs between the curvature of the weather strip 9 attached to the mounting flange 8 of the inner panel 6 and the same curvature of the door trim 3, the weather strip 9 extends from the upper end of the attachment base 10. The lip 22 itself (the soft part at the tip) can be absorbed by the bending allowance. Accordingly, the attachment of the door trim does not affect the attachment state of the weather strip to the attachment flange, so that stable weather strip performance can be maintained. And since the 2nd lip 22 covers the edge 3T (small edge) of the uppermost part of the door trim 3, an external appearance improves. Further, even when a person is likely to touch the edge 3T of the door trim 3 when the window glass 4 is fully opened, the edge 3T is covered with the second lip 22 of the weather strip 9, and the second lip 22 hits, the hit is gentle and the merchantability is improved.

3 Door trim 3T Door trim edge (small edge)
4 Wind glass 6 Door inner panel (inner panel)
7 Window frame 8 Mounting flange 9 Weather strip 10 Mounting base 13 Convex part (wide convex part)
14 Convex (narrow convex)
15 Recess 16 Engaging claw 22 Lip (second lip)
23 Second engagement portion (engagement piece)
26 1st engagement part (engagement convex part)
27 Clamping part W1 Car interior side W2 Car exterior

Claims (4)

A window glass formed in a circular arc shape convex to the outside of the passenger compartment in the cross section;
A window frame of a door inner panel surrounding the window glass,
A mounting flange is provided at the bottom of the window frame,
The mounting flange is formed in a circular arc shape that protrudes outward from the passenger compartment in a cross section corresponding to the window glass,
A weather strip is a vehicle door structure in which a U-shaped mounting base of a weatherstrip is externally fitted to the mounting flange,
The mounting flange is a vehicle door structure in which concave and convex portions are formed in an uneven shape alternately arranged in the longitudinal direction of the lower portion of the window frame. On the convex part of the mounting flange that is convex to the outside of the passenger compartment, an engagement claw part that protrudes to the outer side of the passenger compartment is cut and raised,
The vehicle door structure according to claim 1, wherein a first engagement portion formed on a side wall outside the passenger compartment of the weather strip attachment base portion engages with the engagement claw portion.   3. The vehicle door structure according to claim 1, wherein a second engaging portion extending from an upper end portion of the weather strip attachment base portion is clamped and fixed in a vertical direction to a clamping portion provided in the door trim.   The vehicle door structure according to any one of claims 1 to 3, wherein an edge of the door trim comes into contact with a lip extending from an upper end portion of the weather strip attachment base portion from the vehicle interior side.

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