JP2000264065A - Door sash for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door sash for a vehicle having a T-stud for locking a weather strip to be directed in a plate thickness direction of an outer sash causing no protrusion in a design surface of the outer sash even after welding the T-stud. SOLUTION: A recess is formed in at least either of an end part of an inner sash 22 and a folded part of an outer sash 21 in such a way that a gap is generated between the outer sash 21 and the inner sash 22 at positions on a center axis of a T-stud 23, and heat generated by welding with the T-stud 23 is transferred through a bypass passage apart from the center axis of the T-stud 23 to reach a design surface of the outer sash 21. At the part of this recess, heat transfer or transfer of pressure at welding can be shut off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an outer sash and an inner sash which are arranged side by side so that the design surface of the outer sash is on the front side, and the end of the outer sash is folded back so as to enclose the end of the inner sash. The present invention relates to a vehicle door sash, and more particularly, to a vehicle door sash provided with T studs for locking a weatherstrip in a thickness direction of an outer sash.

[0002]

2. Description of the Related Art An example of a schematic structure of a conventional vehicle door sash will be described with reference to FIG. FIG. 9 is an explanatory diagram of a right rear door of a sedan type passenger car.

As shown in FIG. 9, a door (sash door)
A door sash (door frame) 2 is provided on the upper part of the glass frame 1. The glass sash is moved up and down by being guided by a glass run mounted on the door sash. This door 1 is shown in FIG.
The left end portion of is mounted on the vehicle body by a hinge so that it can be opened and closed. A weatherstrip 4 is mounted on the door 1 in order to seal the door 1 from the vehicle body.

The weather strip 4 includes an annular portion 5 fitted around the entire inner periphery of the door 1 and a lip portion 6 extending to the front door side for closing a gap. To attach the lip portion 6 to the door sash 2, a hole 6 a formed in the lip portion 6 is fitted into a T stud 7 provided on the door sash 2, and further, the length of the clip 8 is further increased. This is performed by fitting the holes 8a. here,
The T stud refers to a stud having a T-shaped vertical cross section including a cylindrical shaft portion and a head portion having a larger diameter.

The above configuration will be further described with reference to FIGS. 10 and 11. 10 is an explanatory view of a door sash portion in FIG. 9, and FIG. 11 is an enlarged cross-sectional view in which a weather strip or the like is added to a cross section taken along a cutting line AA in FIG.

The outer sash 11 and the inner sash 12 constituting the door sash 2 are arranged in parallel so that the design surface (high-brightness finished surface) 11a of the outer sash 11 is on the front side. The end of the outer sash 11 is folded back so as to wrap around the end 12a of the inner sash.
The cylindrical shaft portion 7a of the T stud 7 for locking the lip portion 6 of the weather strip 4 is welded in the thickness direction of the outer sash 11.

[0007] The welding of the T stud 7 to the folded portion 11b of the outer sash 11 is performed after the combination of the outer sash 11 and the inner sash 12. Specifically, a high voltage is applied between the folded portion 11b of the outer sash 11 and the T stud 7 to generate an arc, and the tip of the shaft portion 7a of the T stud 7 and the outer sash 11 opposed to the shaft 7a.
Is melted, and in this state, the T stud 7 is pressed against the folded portion 11b of the outer sash 11 with a constant force.

After the arc welding, the lip 6 of the weather strip 4 and the clip 8 are mounted on the T stud 7.
At this time, the flange-shaped head 7b of the T stud 7 is
Although the diameter is larger than a, the lip portion 6 is made of an elastic material, so that the hole 6a can easily spread through the flange-shaped head portion 7b at the time of mounting, so that there is no problem in fitting the two. or,
Since the long hole 8a of the clip 8 is a long hole extending in a direction perpendicular to the cut surface in FIG. 11 (up and down direction in FIG. 10), the flange-shaped head 7b can be easily formed by bending around the long hole 8a. And there is no hindrance in fitting the two.

As shown in FIG. 11, the lip portion 6 of the weather strip 4 locked to the T stud 7 extends toward the front door 15 and closes the gap. The outer sash 11 has a groove 11c for mounting a glass run, and the inner sash 12 has a groove 12b for mounting the annular portion 5 of the weather strip 4.
The annular portion 5 of the weather strip 4 contacts the center pole 16 on the vehicle body side, and the lip portion 6 of the weather strip 4
Abuts on the front door 15 and is elastically deformed (the deformed state is not shown in FIG. 11).

[0010]

In the door sash 2, the outer sash 11 and the inner sash 12 at the position on the center axis of the T stud 7 are in close contact with each other, and there is no gap between them. For this reason, the heat transmission path along the central axis of the T stud 7, that is, along the central axis of the T stud 7, crosses the end portion 12 a of the inner sash 12 from the folded portion 11 b of the outer sash 11. The crossing of heat toward the design surface 11a of the outer sash 11
Good heat transfer.

Therefore, most of the heat generated in the welded portion between the folded portion 11b of the outer sash 11 and the T stud 7 passes through the above-mentioned crossing path along the central axis of the T stud 7, and 11b and the end 12a of the inner sash 12 to reach the design surface 11a of the outer sash 11.

As a result, the above-mentioned traverse path in the outer sash 11 and the inner sash 12 becomes the center (high-temperature portion) of the temperature distribution, and the portion along the central axis of the T stud 7 excessively rises in temperature and softens. On the other hand, outer sash 11
Is pressed from the T stud 7 side during welding. For this reason, the portion along the central axis of the T stud 7 bends to the opposite side to the T stud 7, and the design surface near the position on the central axis of the T stud 7 expands outward. These bulges remain as protrusions on the design surface 11a after the welding of the T stud 7.

An object of the present invention is to provide a door sash in which the design of the outer sash has no projections even after the welding of the T stud.

[0014]

Means for Solving the Problems Among the present invention for solving the above-mentioned problems, the invention according to claim 1 is characterized in that an outer sash and an inner sash are arranged in parallel so that the design surface of the outer sash is on the front side, While folding the end of the outer sash so as to wrap the end of the inner sash,
A vehicle door sash in which a T stud for locking a weather strip is welded to a folded portion of the outer sash in a thickness direction of the outer sash,
A recess was formed in at least one of an end portion of the inner sash and a folded portion of the outer sash so that a gap was formed between the outer sash and the inner sash at a position on the center axis of the T stud. It is characterized by the following.

In the present invention, there is a gap between the outer sash and the inner sash at a position on the center axis of the T stud. For this reason, the heat transmission path along the central axis of the T-stud 7, that is, along the central axis of the T-stud, from the folded portion of the outer sash, across the end of the inner sash, and the design surface of the outer sash The heat traversing path toward is thermally blocked at the gap.

Therefore, the folded portion of the outer sash and the T
The heat generated at the weld with the stud cannot pass through the above-mentioned traverse along the central axis of the T-stud, and passes through the detour away from the central axis of the T-stud to the outer sash design surface. To reach.

Since there are many such detours away from the center axis of the T-stud, in the present invention, a specific position on the design surface does not excessively rise in temperature and does not soften. Moreover,
In the recessed portion, the transmission of the pressing force during welding is also cut off. As a result, the specific position on the design surface of the outer sash does not expand due to the pressing during welding, and after welding the T stud,
No protrusions remain on the design surface.

According to a second aspect of the present invention, the outer sash and the inner sash are arranged side by side so that the design surface of the outer sash is on the front side, and the end of the outer sash is wrapped around the end of the inner sash. A vehicle door sash in which a T stud for locking a weather strip is welded to an end portion of the inner sash in a thickness direction of the outer sash, and is turned on an end of the inner sash. A recess is formed at an end of the inner sash so that a gap is formed between the outer sash and the inner sash at a position.

The present invention differs from the first aspect in that the T stud is welded to the end of the inner sash instead of the folded portion of the outer sash. Also in the present invention, there is a gap between the outer sash and the inner sash at a position on the center axis of the T stud. For this reason, along the central axis of the T stud, the heat crossing path from the end of the inner sash to the design surface of the outer sash is thermally blocked at the gap.

Therefore, the heat generated at the welding portion between the end of the inner sash and the T stud cannot pass through the above-mentioned traversing path along the central axis of the T stud, and is detoured away from the central axis of the T stud. Through the road, you will reach the outer sash design surface.

As in the case of the first aspect of the present invention, since there are many detours away from the center axis of the T stud, the specific position on the design surface does not excessively rise in temperature in the present invention, and the softening occurs. Nothing to do. In addition, the transmission of the pressing force at the time of welding is cut off at the recessed portion. As a result, the specific position on the design surface of the outer sash does not expand due to the pressing at the time of welding, and no protrusion remains on the design surface after the welding of the T stud.

According to a third aspect of the present invention, a plurality of the T studs are arranged in a line, and the recess is a single band-shaped recess extending in the direction in which the plurality of T studs are arranged. Things.

Also in the present invention, there is a gap between the outer sash and the inner sash at a position on the center axis of the T stud. Therefore, as in the case of the invention described in claim 1, a specific position on the design surface of the outer sash does not expand due to pressing during welding, and after welding of the T stud,
No protrusions remain on the design surface. Further, according to the present invention, since a step is formed in the outer sash or the inner sash due to the band-shaped recess, the bending stiffness and the torsional stiffness are improved by the step, and the stiffness as the door sash is also improved.

According to a fourth aspect of the present invention, a through hole is formed in the inner sash so that a space is formed at a position on the center axis of the T stud in the inner sash.

According to the present invention, a space is created at a position on the center axis of the T stud in the inner sash due to the through hole of the inner sash. For this reason, along the central axis of the T stud, from the folded portion of the outer sash, across the end of the inner sash, and toward the design surface of the outer sash, a heat crossing path is thermally formed at the through hole. Will be shut off.

Therefore, the folded portion of the outer sash and the T
The heat generated at the welding portion of the stud 23 with the shaft cannot pass through the transverse path along the center axis of the T stud, and passes through a detour passing outside the through hole away from the center axis of the T stud. It will pass through to the outer sash design surface.

For this reason, the specific position on the design surface does not excessively rise in temperature and does not soften. In addition, the transmission of the pressing force during welding is cut off at the through hole. As a result,
The specific position on the design surface of the outer sash does not swell due to the pressing at the time of welding, and no protrusion remains on the design surface after the T stud is welded.

According to a fifth aspect of the present invention, a notch is formed in place of the through hole according to the fourth aspect of the present invention. This notch functions exactly like a through hole. For this reason, according to the present invention, the specific position on the design surface of the outer sash does not expand due to the pressing at the time of welding, and no protrusion remains on the design surface after the welding of the T stud.

[0029]

(Embodiment 1) Hereinafter, FIGS. 1 and 2 will be described.
Next, an embodiment common to the first and third aspects of the present invention will be described with reference to FIGS. Here, FIG. 1 is a cross-sectional view of the first embodiment, and FIG. 2 is a perspective view of a T-stud mounting portion.

In these figures, an outer sash 21 and an inner sash 22 constituting a door sash 20 are shown.
Are arranged in parallel so that the design surface 21a of the outer sash 21 is on the front side. Also, the end 2 of the inner sash
2a, a single band-shaped recess 22 extending in the arrangement direction (vertical direction in FIG. 2) of a plurality of T studs 23 described later.
b is formed.

The end of the outer sash 21 is folded back so as to enclose the end 22a of the inner sash.
A cylindrical shaft portion 23a of a T stud 23 for locking a weather strip is welded to the folded portion 21b of the outer sash 21 in a thickness direction of the outer sash 21.

The T stud 23 and the inner sash 22
Is set such that the band-shaped recess 22b exists on the central axis of the T stud 23. Therefore, a gap exists between the folded portion 21b of the outer sash 21 and the end 22a of the inner sash 22 at a position on the center axis of the T stud 23.

The welding of the T stud 23 to the folded portion 21b of the outer sash 21 is performed after the combination of the outer sash 21 and the inner sash 22. Specifically, an arc is generated by applying a high voltage between the folded portion 21b of the outer sash 21 and the T stud 23, and the tip of the shaft portion 23a of the T stud 23 and the folded portion 21b of the outer sash 21 facing the arc are generated. Melt, in this state, T
The stud 23 is folded back portion 21b of the outer sash 21
This is done by pressing with a constant force.

In the present embodiment, the band-shaped recess 22b is formed at a position on the center axis of the T stud 23 in the inner sash 22, so that the folded portion 21b of the outer sash 21 at a position on the center axis of the T stud 23 is formed. There is a gap between the inner sash 22 and the end 22a. For this reason, along the center axis of the T stud 23, the inner sash 22 is turned from the folded portion 21 b of the outer sash 21.
The heat traversing path, which crosses the end 22a of the outer sash 21 toward the design surface 21a of the outer sash 21, is thermally blocked by the gap.

Therefore, as shown in FIG. 3, the heat generated at the welded portion between the folded portion 21b of the outer sash 21 and the shaft portion 23a of the T stud 23 is transferred to the transverse path P0 along the central axis of the T stud 23. (Indicated by a dashed line in the figure) and cannot pass through the detours P1 and P2 (indicated by a thick solid line in the figure) distant from the central axis of the T stud 23,
It reaches the design surface 21a of the outer sash 21. A large number of the detours P1 and P2 are formed in a direction perpendicular to the cut surface in FIG.

As described above, since there are a large number of detours P1, P2, etc. distant from the central axis of the T stud 23, the specific position on the design surface 21a does not excessively rise in temperature and does not soften. In addition, the transmission of the pressing force at the time of welding is interrupted in the recess 22b. As a result, the specific position on the design surface 21a of the outer sash 21 does not expand due to the pressing at the time of welding, and after the welding of the T stud 23, the design surface 2
There is no protrusion left on 1a.

Although not shown, the folded portion 21b of the outer sash 21 is provided with a band-shaped recess 2 by this welding.
Although a convex portion is formed in the direction protruding from 2b, it is a place that cannot be seen from the outside, and there is no problem in appearance.

Outer sash 21 and inner sash 22
Is about 0.9 mm, the height of the projection is usually 0.1 to 0.2 mm. Therefore, in this case, the depth of the band-shaped recess 22b is set to 0.3 to 0.5 so that the convex portion can be accommodated.
You may choose about mm. The planar shape of the convex portion is shown in FIG. 2 when the outer diameter of the shaft portion 23a of the T stud 23 is 3 mm.
Has a width of 9 mm in the horizontal direction and a width of about 3 mm in the vertical direction, and the width of the band-shaped recess 22 b may be selected so as to accommodate the convex portion.

In the conventional configuration in which the band-shaped recess 22b is not provided, heat is transmitted through a transmission path corresponding to the above-described P0 along the central axis of the T stud 23, and the transmission path excessively rises in temperature. It will bend by the pressing force at the time of welding. As a result, after the welding of the T stud 23, a convex portion is formed on the design surface 21a of the outer sash 21.
The quality of the design surface 21a deteriorates. If this quality deterioration cannot be ignored, it is necessary to add a finishing step for the design surface 21a, which leads to an increase in cost. According to the present embodiment, these problems do not occur.

In the above description, the band-shaped recess 22b is formed, but the invention is not limited to the band. For example, the band-shaped recess 22
Instead of b, a recess such as a circle or a rectangle may be formed for each T stud 23. However, if the band-shaped recess 22b,
Only one dent is required, the formation is easy, and the band-shaped dent 22b improves the bending stiffness and the torsional stiffness of the inner sash 22 and the stiffness of the door sash 20 is also improved.

(Embodiment 2) FIG. 4 is a sectional view showing a main part of a second embodiment. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the direction of the recess of the band-shaped recess 22b of the inner sash 22 is reversed from that of the first embodiment.

In this embodiment, a gap is formed between the outer sash 21 and the end 22a of the inner sash 22 by the band-shaped recess 22b of the inner sash 22. For this reason, along the center axis of the T stud 23, the inner sash 22 is turned from the folded portion 21 b of the outer sash 21.
The heat traversing path, which crosses the end 22a of the outer sash 21 toward the design surface 21a of the outer sash 21, is thermally blocked by the gap.

Therefore, heat generated at the welded portion between the folded portion 21b of the outer sash 21 and the shaft portion 23a of the T stud 23 travels along the transverse path P0 along the central axis of the T stud 23 as shown in FIG. Can't pass, T stud 2
3 reaches the design surface 21a of the outer sash 21 through the detours P1 and P2 distant from the central axis of the outer sash 21.

Since the detours P1 and P2 are formed in a large number in a direction perpendicular to the cutting plane in FIG.
The specific position above does not rise excessively and does not soften. In addition, the transmission of the pressing force at the time of welding is interrupted in the recess 22b. As a result, the specific position on the design surface 21a of the outer sash 21 does not expand due to the pressing at the time of welding, and no projection remains on the design surface 21a after the T stud 23 is welded. In this embodiment,
The depression need not be limited to a band-shaped depression.

(Embodiment 3) FIG. 5 is a sectional view showing a main part of a third embodiment. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the inner sash 22 is provided with no band-shaped recess,
Is provided with a band-shaped recess 21c in the folded portion 21b.

In this embodiment, a gap is formed between the folded portion 21b of the outer sash 21 and the end 22a of the inner sash 22 by the band-shaped recess 21c of the outer sash 21. For this reason, along the center axis of the T stud 23, the folded portion 21b of the outer sash 21
The crossing path of heat that crosses the end 22a of the inner sash 22 and goes to the design surface 21a of the outer sash 21 is thermally blocked at the gap.

Therefore, as shown in FIG. 5, the heat generated at the welded portion between the folded portion 21b of the outer sash 21 and the shaft portion 23a of the T stud 23 travels along the transverse path P0 along the central axis of the T stud 23, as shown in FIG. Can't pass, T stud 2
3 reaches the design surface 21a of the outer sash 21 through the detours P1 and P2 distant from the central axis of the outer sash 21.

As in the case of the first and second embodiments, since the detours P1 and P2 are formed in a large number in a direction perpendicular to the cut surface in FIG. 5, the specific position on the design surface 21a is excessively large. There is no temperature rise and no softening. In addition, the transmission of the pressing force at the time of welding is cut off at the recess 21c.
As a result, the specific position on the design surface 21a of the outer sash 21 does not expand due to the pressing at the time of welding, and no projection remains on the design surface 21a after the T stud 23 is welded. In the present embodiment, the dents need not be limited to band-shaped dents.

(Embodiment 4) Claims 2 and 3 using FIG.
An embodiment common to the described invention will be described. Here, FIG. 6 is a sectional view showing a main part of the fourth embodiment. In the figure,
The same parts as those of the second embodiment are denoted by the same reference numerals. In this embodiment, the folded portion 21b of the outer sash 21 in the second embodiment is shortened, and the back surface of the inner sash 22 where the band-shaped recess 22b is formed is exposed.
The shaft portion 23a of the T stud 23 is welded.

In this embodiment, a gap is formed between the outer sash 21 and the end 22a of the inner sash 22 by the band-shaped recess 22b of the inner sash 22. For this reason, along the central axis of the T stud 23, the heat crossing path from the end 22a of the inner sash 22 to the design surface 21a of the outer sash 21 is thermally blocked by the gap.

Therefore, the end 22a of the inner sash 22
As shown in FIG. 6, the heat generated in the welded portion between the T-stud 23 and the shaft portion 23a of the T-stud 23 cannot pass through the transverse path P0 along the central axis of the T-stud 23. Through the detours P1 and P2 away from the sash 21 and reaches the design surface 21a of the outer sash 21.

Since the detours P1 and P2 are formed in a large number in a direction perpendicular to the cut surface in FIG.
The specific position above does not rise excessively and does not soften. In addition, the transmission of the pressing force at the time of welding is interrupted in the recess 22b. As a result, the specific position on the design surface 21a of the outer sash 21 does not expand due to the pressing at the time of welding, and no projection remains on the design surface 21a after the T stud 23 is welded.

In this embodiment, the dents need not be limited to band-shaped dents. FIG. 6 shows a door sash of this type.
As shown in FIG. 1, since the inner sash 22 has a structure separated from the outer sash 21 as shown in FIG. 1, the inner sash 22 on the detour P1 side is indicated by a two-dot chain line in FIG. As shown, the outer sash 21 may be configured so as not to contact the outer sash 21. However, in this case, since the detour P1 on one side is eliminated, a small projection may be slightly generated.

Further, in each of the above embodiments, including this embodiment, the arc welding of the T stud 23 to the folded portion 21b of the outer sash 21 is performed after the combination of the outer sash 21 and the inner sash 22. In the case of the embodiment, the T stud 23 can be arc-welded to the inner sash 22 before being assembled to the outer sash 21.

(Embodiment 5) An embodiment according to the fourth aspect of the present invention will be described with reference to FIG. Here, FIG. 7 is a perspective view showing a fifth embodiment. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals. In this embodiment, a circular through hole 22 d is provided for each T stud 23 instead of the band-shaped recess 22 b of the inner sash 22.

Also in this embodiment, the inner sash 22
Of the inner sash 22 by the through hole 22d of
A space is created at a position on the center axis of the stud 23. For this reason, along the center axis of the T stud 23, from the folded portion 21 b of the outer sash 21 and across the end 22 a of the inner sash 22, the design surface 21 of the outer sash 21 is formed.
The crossing path of heat toward a is thermally blocked at the through hole 22d.

Therefore, the heat generated at the welded portion between the folded portion 21b of the outer sash 21 and the shaft portion 23a of the T stud 23 cannot pass through the transverse path along the central axis of the T stud 23. Away from the central axis of 23,
Through the detour that passes outside the through hole 22d, it reaches the design surface 21a of the outer sash 21.

For this reason, the specific position on the design surface 21a does not excessively rise in temperature and does not soften. In addition, transmission of the pressing force during welding is also cut off at the through hole 22d. As a result, the outer sash 21 is pressed by welding.
The specific position on the design surface 21a does not bulge, and no protrusion remains on the design surface 21a after the T stud 23 is welded.

In this embodiment, a circular through hole 22d is provided for each T stud 23. However, the invention described in claim 4 is not limited to this. For example, the through hole 22d may be formed in a rectangular shape. Furthermore, the through hole 22 is provided for each T stud 23.
Instead of forming d, one through hole (a long hole) may be assigned to the plurality of T studs 23.

(Embodiment 6) An embodiment according to the fifth aspect of the present invention will be described with reference to FIG. Here, FIG. 8 is a perspective view showing a sixth embodiment. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals. In this embodiment, a notch 22 is used instead of the band-shaped recess 22 b of the inner sash 22.
e is provided for each T stud 23.

Also in the case of this embodiment, the inner sash 22
Due to the notch 22e, a space is created at a position on the center axis of the T stud 23 in the inner sash 22. For this reason, along the center axis of the T stud 23, from the folded portion 21 b of the outer sash 21 and across the end 22 a of the inner sash 22, the design surface 21 of the outer sash 21 is formed.
The crossing path of heat toward a is thermally blocked at the notch 22e.

Therefore, heat generated at the welded portion between the folded portion 21b of the outer sash 21 and the shaft portion 23a of the T stud 23 cannot pass through the transverse path along the central axis of the T stud 23, Away from the central axis of 23,
The sash 21 reaches the design surface 21a of the outer sash 21 through a detour passing outside the notch 22e.

Therefore, the specific position on the design surface 21a does not excessively rise in temperature and does not soften. In addition, the transmission of the pressing force during welding is cut off at the notch 22e.
As a result, the specific position on the design surface 21a of the outer sash 21 does not expand due to the pressing at the time of welding, and no projection remains on the design surface 21a after the T stud 23 is welded.

In this embodiment, the notch 22e is formed from the left end face in FIG. 8, but the invention described in claim 5 is not limited to this. Also, a plurality of T studs 23
May be assigned to one notch.

[0065]

As described above, according to the first aspect of the present invention, there is a gap between the outer sash and the inner sash at a position on the center axis of the T stud. Along the way, from the folded portion of the outer sash, across the end of the inner sash, and toward the design surface of the outer sash, the heat crossing path is thermally blocked at the gap.

Therefore, the folded portion of the outer sash and the T
The heat generated at the weld with the stud cannot pass through the transverse path along the center axis of the T-stud and reaches the outer sash design surface via a detour away from the center axis of the T-stud. Will do.

Since there are many such detours away from the center axis of the T stud, according to the present invention, the specific position on the design surface does not excessively rise in temperature and does not soften. In addition, the transmission of the pressing force at the time of welding is cut off at the recessed portion. As a result, the specific position on the design surface of the outer sash does not expand due to the pressing at the time of welding, and no protrusion remains on the design surface after the welding of the T stud.

Also in the second aspect of the present invention, a gap exists between the outer sash and the inner sash at a position on the center axis of the T stud. For this reason, similarly to the case of the first aspect of the present invention, a specific position on the design surface of the outer sash does not expand due to pressing during welding, and a convex portion remains on the design surface after welding of the T stud. Not even.

Also in the third aspect of the invention, there is a gap between the outer sash and the inner sash at a position on the center axis of the T stud. For this reason, similarly to the case of the first aspect of the present invention, a specific position on the design surface of the outer sash does not expand due to pressing during welding, and a convex portion remains on the design surface after welding of the T stud. Not even. Further, according to the third aspect of the invention, since a step is formed in the outer sash or the inner sash due to the band-shaped recess, the bending stiffness and the torsional stiffness are improved by the step, and the stiffness as the door sash is also improved.

According to the fourth aspect of the present invention, the through hole of the inner sash creates a space at a position on the center axis of the T stud in the inner sash. For this reason, along the center axis of the T stud,
A crossing path of heat that crosses the end of the inner sash and goes to the design surface of the outer sash is thermally blocked at the through hole.

Therefore, the folded portion of the outer sash and the T
The heat generated at the welding portion of the stud 23 with the shaft cannot pass through the transverse path along the center axis of the T stud, and passes through a detour passing outside the through hole away from the center axis of the T stud. It will pass through to the outer sash design surface.

For this reason, the specific position on the design surface does not excessively rise in temperature and does not soften. In addition, the transmission of the pressing force during welding is cut off at the through hole. As a result,
The specific position on the design surface of the outer sash does not swell due to the pressing at the time of welding, and no protrusion remains on the design surface after the T stud is welded.

According to the fifth aspect of the invention, a notch is formed instead of the through hole according to the fourth aspect of the invention. This notch functions exactly like a through hole. Therefore, claim 5
According to the invention described above, the specific position on the design surface of the outer sash does not expand due to the pressing at the time of welding, and no projection remains on the design surface after the welding of the T stud.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is a perspective view of a mounting portion of a T stud.

FIG. 3 is a sectional view of a main part of the first embodiment.

FIG. 4 is a sectional view of a main part of a second embodiment.

FIG. 5 is a sectional view of a main part of a third embodiment.

FIG. 6 is a sectional view of a main part of a fourth embodiment.

FIG. 7 is a perspective view showing a fifth embodiment.

FIG. 8 is a perspective view showing a sixth embodiment.

FIG. 9 is an explanatory view of a right rear door of a sedan type passenger car.

FIG. 10 is an explanatory view of a door sash part in FIG. 9;

11 is an enlarged cross-sectional view in which a weather strip and the like are added to a cross section taken along a cutting line AA in FIG. 10;

[Explanation of symbols]

 Reference Signs List 20 door sash 21 outer sash 21a design surface 21b folded portion 21c band-shaped dent 22 inner sash 22a end 22b band-shaped dent 22d through hole 22e notch 23 T stud 23a shaft portion P0 crossing path P1, P2 detour circuit

Claims (5)

[Claims] 1. An outer sash and an inner sash are arranged in parallel such that the design surface of the outer sash is on the front side,
The outer sash is folded back so as to wrap around the inner sash end, and a T for locking a weather strip at the folded back portion of the outer sash is provided.
A vehicle door sash in which a stud is welded in a thickness direction of the outer sash, wherein a gap is formed between the outer sash and the inner sash at a position on a center axis of the T stud. A vehicle door sash having a recess formed in at least one of an end of an inner sash and a folded portion of the outer sash. 2. An outer sash and an inner sash are arranged in parallel so that the design surface of the outer sash is on the front side,
The end of the outer sash is folded back so as to enclose the end of the inner sash, and a T stud for locking a weather strip is welded to the end of the inner sash in the thickness direction of the outer sash. A vehicle door having a recess formed at an end of the inner sash such that a gap is formed between the outer sash and the inner sash at a position on a center axis of the T stud. Sash. 3. The method according to claim 1, wherein the plurality of T studs are arranged in a line, and the recess is a single band-shaped recess extending in the direction in which the plurality of T studs are arranged.
Or the vehicle door sash according to 2. 4. An outer sash and an inner sash are arranged in parallel so that the design surface of the outer sash is on the front side,
The outer sash is folded back so as to wrap around the inner sash end, and a T for locking a weather strip at the folded back portion of the outer sash is provided.
A vehicle door sash in which a stud is welded in a thickness direction of the outer sash, wherein a through hole is formed in the inner sash so that a space is generated at a position on the center axis of the T stud in the inner sash. Vehicle door sash. 5. An outer sash and an inner sash are arranged in parallel so that a design surface of the outer sash is on a front side,
The outer sash is folded back so as to wrap around the inner sash end, and a T for locking a weather strip at the folded back portion of the outer sash is provided.
A vehicle door sash in which a stud is welded in a thickness direction of the outer sash, wherein a notch is formed in the inner sash so that a space is generated at a position on a center axis of the T stud in the inner sash. Door sash for vehicles.