JP2002331838A - Weather strip fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the setting property in assembling a holding lid 40 to a lip receiving groove 15, and the holding property after the assembly thereof. SOLUTION: The channel-like lip receiving groove 15 which is tapered toward a flange tip side is formed on a root side of a flange 13 of a door sash 11. The holding lip 40 of a weather strip 20 received in the lip receiving groove 15 comprises a first piece part 41 extending along an inclined surface 14 of the lip receiving groove 15 facing the flange 13, and a second piece part 42 which is bent from this first piece part 41 in a substantially V-shaped section with a tip thereof abutted on the flange 13. A partially thin-walled notch 43 is formed on the acute angle side of a corner part of both piece parts 41 and 42. The substantial piece length a of the second piece part 42 is set to be larger than the minimum opening dimension b of the lip receiving groove 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip mounting structure mounted on a flange of a member to be mounted such as a door sash of an automobile door.

[0002]

2. Description of the Related Art A weather strip for sealing a peripheral portion of a door glass or a door is attached to a member to be attached such as a window frame or a door opening of an automobile. FIGS. 6 to 8 show three conventional examples of such a weather strip mounting structure disclosed in JP-A-3-31026 and JP-A-10-505561, respectively.

First, a configuration common to all conventional examples will be described. The weather strip 61 is attached to a flange 63 of a door sash 62 which is a member to be attached. A substantially channel-shaped lip receiving groove 64 is formed on the side of the root 63a of the flange 63, and the lip receiving groove 64 opens toward the flange tip side (the right side in the figure). The side wall 65 of the lip receiving groove 64 facing the flange 63 extends substantially parallel to the flange 63. At least one of the side wall portion 65 and the flange 63 is provided with a projecting portion 66 that partially projects toward the inside of the lip receiving groove 64.

[0004] A retaining lip 67 is formed in the weather strip 61 to be received in the lip receiving groove 64.
The holding lip 67 is formed with a projection 68 that engages with the overhang 66. That is, the projection 68 climbs over the overhang 66 when the weather strip 61 is assembled, and in the state after the assembly, the weather strip 6
In order to hold the projection 1 without falling out of the flange 63, the projection 1 is in contact with the rear side (left side in the drawing) of the overhang portion 66 so as to be able to abut.

[0005] A core 69 for reinforcement is embedded in the weather strip 61. The core 69 has a portion 69a having a substantially U-shaped cross section that covers the welt groove 70 fitted to the flange 63, and an extension 69b that is bent at a substantially right angle from one end of the portion 69a. This extension 69b
Is extended so as to easily insert the holding lip 67 into the lip receiving groove 64 so as to cross the entire holding lip 67 along the direction perpendicular to the flange (the vertical direction in the drawing). As a result, the extension 69b is formed to extend to near the tip (FIGS. 6 and 7) or near the center (FIG. 8) of the side wall 73 inside the channel-shaped glass receiving portion 72 for receiving the door glass 71. .

[0006] In addition, in the first conventional example shown in FIG. 6 and the second conventional example shown in FIG.
Is formed in a flange shape protruding in the direction perpendicular to the flange (up and down direction in the figure) so as to cross the opening of (1). The holding lip 67 is bent in a substantially L-shaped cross section in the first conventional example, and is formed in a hollow cross section in the second conventional example. Further, in the third conventional example shown in FIG. 8, the side wall 65 and the flange base 63 of the lip receiving groove 64 facing each other are provided.
The projecting portions 66 are formed at two places corresponding to the both projecting portions 66, respectively. The holding lip 67 of the third conventional example is similar to the second conventional example,
It has a hollow cross section.

[0007]

As a problem common to all the prior arts, the projecting portion 68 of the holding lip 67 needs to climb over the overhanging portion 66 at the time of assembly. If 69b is not set, it is difficult to push the holding lip 67 into the lip receiving groove 64. That is, it tends to be difficult to insert the holding lip 67 into the lip receiving groove 64. However, to reduce the insertion force,
If the amount of protrusion of the overhang portion 66 or the projection portion 68 is reduced, the holding lip 67 easily comes out of the lip receiving groove 64, and the desired holding performance cannot be obtained.

Further, since the extended portion 69b of the core 69 is formed to extend to the vicinity of the tip or the center of the side wall 73 of the glass receiving portion 72, the core 69 becomes relatively long, and the material cost increases. The glass receiving portion 72 is difficult to open, and when molded, the mold releasability during molding is not good.

In addition, in the first conventional example and the second conventional example, since the projection 68 is formed in a flange shape, the projection 6
The shape of 8 is easily rounded, the radius of curvature of the protrusion 68 in the tip direction is increased, and the holding force is easily reduced.

In the second conventional example and the third conventional example, since the holding lip 67 is formed in a hollow shape, the holding lip 67 can be easily pressed against the wall surface of the lip receiving groove 64, thereby holding the holding lip 67. Although the pressurizing property can be improved, when used in such a pressed state for a long period of time, the pressing force is apt to decrease, and it is difficult to secure stable holding performance for a long time.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and it is easy to insert the holding lip into the lip receiving groove at the time of assembling, and to hold the holding lip in the lip receiving groove after the assembling. Another object of the present invention is to provide a novel weather strip mounting structure that can be stably held for a long period of time.

[0012]

Means for Solving the Problems According to claim 1 of the present invention,
In the weather strip mounting structure mounted on the flat flange provided on the mounted member, the mounted member is formed with an inclined surface facing a root portion of the flange, and the inclined surface is directed toward the flange tip. A lip receiving groove that opens toward the flange tip side is formed between the flange and the flange so that the gap between the flange and the flange becomes narrower toward the flange.
The weatherstrip is formed with a retaining lip received in the lip receiving groove, the retaining lip having a first piece extending along the inclined surface, and an end of the first piece on a flange root side. And a second piece part whose tip is in contact with the flange at an acute angle from the corner of the first piece part and the second piece part. The notch is formed to be thinner, and the substantial length of the second piece is set to be longer than the gap between the flange and the inclined surface at the opening of the lip holding groove. And

According to the first aspect of the present invention, when assembling the weather strip to the member to be mounted, that is, when inserting the holding lip into the lip receiving groove, the second piece is pressed against the flange, and the notch is formed. The holding lip can be easily inserted into the lip receiving groove without causing the holding lip to interfere with the opening peripheral portion of the lip receiving groove or the like by deforming the second piece portion so as to be folded toward the first piece portion with the center as the center. .

In a state after the assembly, the first piece is disposed along the lip holding groove, and the tip of the second piece contacts the flange, so that the holding lip is stably placed in the lip holding groove. Is held.

When an external force is applied to the weatherstrip in a state after the assembling, in a direction to pull out from the flange, the second piece is rotated and deformed around the notch so as to rise in a direction orthogonal to the flange. The second piece functions as a kind of wedge that bridges between the inclined surface of the lip receiving groove and the flange, and the holding force against the above-mentioned external force is significantly improved. For this reason, it can prevent reliably that a weather strip comes off from a flange.

This wedge effect hardly utilizes the reaction force of pressing the holding lip and appears only when an external force in the pulling-out direction acts substantially, so that there is almost no deterioration with time and stable over a long period of time. And maintain the expected performance.

In the invention according to claim 2, a welt portion is formed in the weather strip by connecting one end of a pair of legs holding the flange at the top, and the tip is formed at the tip of one leg. A holding lip is formed, and
A core extending over both the legs and the top extends into the welt, and one end of the core is located near the root of the holding lip.

That is, since the holding lip can be inserted into the lip receiving groove without interfering with the member to be mounted as described above, it is necessary to provide an extended portion on the core material to improve the insertability as in the conventional example. There is no. Therefore, according to the second aspect of the present invention, the core material can be shortened without extending into the holding lip, and the material cost can be reduced.

According to a third aspect of the present invention, there is provided a glass for receiving an edge of a vehicle door glass by connecting one end of a pair of legs for holding the flange to the weather strip at one end. And a receiving portion, wherein the holding lip is formed by the tip of one leg portion, and one side wall portion of the glass receiving portion facing the side surface of the door glass is a base of the holding lip. And a thin wall portion that is partially thinned is formed in the middle of one of the side wall portions.

In this case, when the holding lip has been inserted into the lip receiving groove, that is, in a state after the assembling, the portion closer to the welt portion than the thin portion in one of the side wall portions of the glass receiving portion. By being urged in the direction of rotation about the root of the holding lip, the second piece is pressed toward the inclined surface side about the root, so that the holding lip is more stably inserted into the lip receiving groove. Is held.

Furthermore, according to the second and third aspects of the present invention, the core material is hardly present in the side wall of the glass receiving portion. Are easy to open, and the removability is good.

[0022]

As described above, according to the present invention, it is possible to easily insert the holding lip into the lip receiving groove when assembling the weather strip, and to insert the retaining lip into the weather strip after the assembly. Even if external force acts, the holding lip can be securely held in the lip receiving groove,
As a result, the weather strip can be securely held on the member to be attached, and such holding performance can be stably maintained for a long period of time.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 4
Is the upper side 1 of the door sash 12 of the door 11 shown in FIG.
This corresponds to the cross-sectional shape along the line AA in 2a.
The cross-sectional shape of the weatherstrip in the state after assembly is shown by a solid line in FIG. 1, and the cross-sectional shape of the weatherstrip in the free state (natural length state) before the assembly is shown in broken lines in FIG. Is shown.

A weather strip 20 is mounted on a flat flange 13 formed on the upper side 12a of the door sash 12 as a member to be mounted. In this embodiment, the upper side portion 12a of the door sash is formed separately from the door 11, and has a closed cross-sectional structure in which both ends of a metal plate are joined by flanges 13 by roll forming or the like. An inclined surface 14 facing the root 13a of the flange 13 is formed on the upper side 12a of the door sash. The inclined surface 14 is inclined at a predetermined angle α with respect to the flange 13 so that the gap between the flange 13 and the flange 13 becomes smaller toward the front end side of the flange (right side in the figure). Between the inclined surface 14 and the flange 13, a channel-shaped lip receiving groove 15 that opens toward the front end of the flange is bent.

The weather strip 20 is formed as a part of a door glass run extending from the upper side 12a to the vertical side 12b (see FIG. 5) of the door sash 12, and is integrally formed of an elastic material such as rubber. I have. In this embodiment, the door sash 12
The mounting structure to the upper side portion 12a is targeted, and the description of the mounting structure to the vertical side portion 12b is omitted.

The weather strip 20 has a welt portion 22 having a welt groove 21 formed to fit into the flange 13, a channel-shaped glass receiving portion 23 for receiving the upper end of the door glass 16, and a receiving portion 23 in the lip receiving groove 15. And a holding lip 40 to be provided.

The welt portion 22 has a substantially U-shaped cross section in which a pair of legs 22a and 22b holding the flange 13 are connected by a top 22c. Inside the weld portion 22, a reinforcing metal core material 2 also having a substantially U-shaped cross section is provided.
4 extends over both legs 22a, 22b and top 22c. A pair of seal lips 25 are formed on one upper leg 22a to abut the door opening 17 on the vehicle body side when the door is closed to seal a gap with the door opening 17. The other lower leg 22b has an inclined portion that is inclined in a direction away from the flange 13 (downward in the figure) toward the distal end of the flange base (left side in the figure), and the distal end of the lower leg 22b. The holding lip 40 is formed by the portion. That is, the holding lip 40 has a simple structure in which the holding lip 40 also serves as a part of one leg 22 b of the welt portion 22.

The holding lip 40 is bent in a substantially V-shaped cross section. That is, the holding lip 40 includes the first piece 41 extending along the inclined surface 14 and the first piece 41.
Is bent sharply from the end of the flange base side (left side in the figure) toward the front end side of the flange (right side in the figure), and the second piece is such that the front end comes into contact with the flange 13 after assembly. Part 4
And 2. A notch 43 partially thinned is formed on the acute angle side of the corner between the first piece 41 and the second piece 42. Also, the second piece 4
2 is set to be longer than the minimum opening dimension of the welt groove 21, that is, the gap b between the flange base 13a and the inclined surface 14 at the opening of the welt groove 21. I have.

It should be noted that the holding lip 4
Similarly to the case of No. 0, a plurality of flange holding portions 30 are formed so as to be in contact with the flange 13 at the tip after assembly. In other words, the holding lip 40 forms a part of the flange holding portion 30 that holds the flange 13.

The glass receiving portion 23 is formed in a channel shape that opens downward, with a part of the lower leg portion 22b on the lower side of the welt portion 22 as the top.
Of side walls 23a, 23 projecting downward from
b. At the tip of each side wall portion 23a, 23b,
Inner lip 2 that contacts the inside and outside of door glass 16
6 and the outer lip 27 are bent.

The inner side wall portion 23a facing the inner side surface of the door glass 16 is integrally connected and connected in the middle of the lower leg portion 22b of the welt portion 22, that is, to the root portion 44 of the holding lip 40. In addition, in a state after assembly, the door sash 12 contacts the vertical surface 18. This inner side wall 23
A partially thinned portion 28 is formed in the middle of a, and the inner side wall portion 23a is set so as to bend and deform around the thinned portion 28.

The core material 24 is formed on the upper leg 2 of the welt 22.
While extending almost the entire length of 2a, it extends only partway through the lower leg 22b. That is, one end of the core member 24 is located near (to the front of) the root portion 44 of the holding lip 40 and does not substantially extend into the holding lip 40 or the side wall 23 a inside the glass receiving portion 23. Since the core material 24 is relatively shortened as described above, the material cost is suppressed, and when the mold is formed, the glass receiving portion 23 is easily opened, and the mold removability is excellent.

The weatherstrip 20 is moved to the door sash 1
2, that is, to attach the weld portion 22 to the flange 1
When inserting the holding lip 40 into the lip receiving groove 15 while inserting it into the lip receiving groove 3, the second piece 42 is pressed against the flange 13 side as shown in FIG. By deforming the piece portion 42 so as to be folded toward the first piece portion 41, the holding lip 40 is brought into a shape in which the holding lip 40 is entirely moved toward the flange 13 side.
Can be easily inserted into the lip receiving groove 15 without interfering with the peripheral edge of the opening of the lip receiving groove 15 and the like, and the insertion is easy.

When the holding lip 40 has been inserted, FIG.
As shown by the arrow in (b), the tip of the inner side wall portion 23a strongly contacts the vertical surface 18 of the door sash 12, and the like, so that the side wall portion 23a is closer to the welt portion 22 than the thin portion 28. The portion 32 is urged about the root portion 44 of the retaining lip 40 in a direction of rotation away from the vertical surface 18, with the result that the first piece 41 is moved to the root portion 44.
Is pressed in the rotation direction toward the inclined surface 14 with the center as the center, and the holding ability is further improved. In particular, since the one end of the core member 24 is located substantially near the root portion 44 of the holding lip 40, the center of rotation described above clearly becomes the root portion 44, and the above-described operation and effect can be more reliably obtained.

Thus, in the state after assembly, FIG.
As shown in FIG. 5, the tip of the second piece 42 abuts on the flange 13, the second piece 42 extends along the inclined surface 14, and the holding lip 40 is attached to the opposite wall surface (1) of the lip receiving groove 15.
(3) and (14) are held in good contact with each other.

With respect to the weather strip 20 in such a state after assembling, as shown by an arrow F1 in FIG.
When an external force is applied in a direction to pull out from the flange 13, the second piece 42 rises in a direction perpendicular to the flange (the vertical direction in the drawing) due to friction between the tip of the second piece 42 and the flange 13. Since the second piece 42 is rotationally displaced about the notch 43 and the length a of the second piece 42 is longer than the opening dimension b of the lip receiving groove 15, the second piece 42 is in contact with the flange base 13a and the inclined surface. It functions as a kind of wedge that bridges the gap between them, and generates a strong holding force. This wedge effect hardly utilizes the reaction force of the holding lip 40 against the flange and the like, and appears only when the external force F1 in the pulling-out direction acts substantially. And maintain the expected performance.

Further, as described above, in the state after the assembly, the first piece 41 is pressed against the inclined surface 14, and the second piece 42 is raised to some extent in the direction orthogonal to the flange. Flange 1
The wedge effect described above can be obtained with a small amount of deviation from 3.

Further, since the holding lip 40 is set such that the first piece 41 and the second piece 42 are bent and deformed about the notch 43, the length a of the second piece 42 is set to the lip. If it is larger than the minimum opening dimension b of the receiving groove 15,
Even if there is some dimensional variation, the above-mentioned effects such as the wedge effect can be stably obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a weather strip mounting structure according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a sectional shape of the weather strip of FIG. 1 in a free state.

FIG. 3 is an explanatory view showing a procedure for assembling the weather strip.

FIG. 4 is an explanatory diagram in a case where an external force in a pull-out direction acts on the weather strip after the assembly.

FIG. 5 is a side view showing an automobile door to which the weather strip is attached.

FIG. 6 is a cross-sectional view showing a weather strip mounting structure according to a first conventional example.

FIG. 7 is a cross-sectional view showing a weather strip mounting structure according to a second conventional example.

FIG. 8 is a cross-sectional view showing a weather strip mounting structure according to a third conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 ... Door sash 13 ... Flange 13a ... Flange base part 14 ... Inclination surface 15 ... Lip receiving groove 20 ... Weather strip 21 ... Welt groove 22 ... Welt part 22a, 22b ... Leg part 23 ... Glass receiving part 23a, 23b ... Side wall part 28 thin part 40 holding lip 41 first piece 42 second piece 43 notch 44 root part

Claims (3)

[Claims] 1. A mounting structure for a weather strip mounted on a flat flange provided on a member to be mounted, wherein the mounting member has an inclined surface facing a root portion of the flange, and the inclined surface is A lip receiving groove which is inclined with respect to the flange so that a gap between the flange and the flange becomes narrower toward the flange distal end, and which is opened toward the flange distal end, is formed between the inclined surface and the flange. A retaining lip is formed in the weather strip and is received in the lip receiving groove. The retaining lip includes a first piece extending along the inclined surface, and an end of the first piece on a flange base side. And a second piece that bends at an acute angle from the portion toward the flange tip, and the tip abuts on the flange. On the acute angle side of the corner between the first piece and the second piece, Department A notch that is thinned separately is formed, and a substantial length of the second piece is set to be longer than a gap between the flange and the inclined surface at the opening of the lip holding groove. Characteristic weather strip mounting structure. 2. A welt formed by connecting one end of a pair of legs holding the flange at the top to the weatherstrip, and the holding lip is formed at a tip of one of the legs. And a core extending over both the legs and the top in the welt, and one end of the core is located near a root of the holding lip. Weather strip mounting structure. 3. A welt portion formed by connecting one end of a pair of legs for holding the flange at a top portion to the weather strip, and a glass receiving portion for receiving an edge of a door glass for a vehicle. The tip of one leg forms the holding lip, and one side wall of the glass receiving portion facing the side surface of the door glass is connected to the root of the holding lip. The weather strip mounting structure according to claim 1 or 2, wherein a partially thinned portion is formed in the middle of the one side wall portion.