JP2006082749A - Door sash for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door sash which offers excellent mass-productivity, low cost and high rigidity. <P>SOLUTION: A center pillar of a door sash includes an outer part, a glass guide part and an inner part. The outer part and the glass guide part are integrally formed. An outer part side end and a glass guide part side end are both folded back toward the inside of a vehicle, and respectively connected to both side ends of the inner part by hemming processing. In this case, it is preferable to integrally mold the outer part and the glass guide part by a roll molding method and to mold the inner part by a press molding method. By so doing, the outer part side end and the glass guide part side end are acutely folded back toward the inside of a vehicle by the roll molding method, which facilitates a caulking connection (hemming processing). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a side door sash for a vehicle, and particularly relates to a structure of a center pillar called a B pillar.

In a side door for a vehicle, the air pressure on the door surface outside the vehicle is lowered from the inside of the vehicle by the air flowing along the door surface while the automobile is running.
Accordingly, when the door sash is sucked out of the vehicle, a gap is generated between the vehicle body and the door, which may cause noise such as wind noise.
This suction phenomenon is particularly problematic in high-speed traveling, and the rigidity of the center pillar (B pillar) is particularly required in the door sash to ensure the suction rigidity.
As a highly rigid door, there is a proposal of a press door that is integrally press-molded with a door frame and an inner panel or an outer panel of the door body.
However, the press door has a problem in that the die body is expensive and the manufacturing cost is high because the door body (panel portion) and the door frame are integrated.

Therefore, Japanese Patent Laid-Open No. 2003-220830 discloses a technique for integrally forming the inner portion of the door sash with the inner panel of the door body. However, in that point, the inner panel and the inner portion of the center pillar are formed integrally. The mold is large and expensive.
Also, as shown in FIGS. 4 and 5, the glass guide portion is formed as a separate body by roll molding and joined by welding or hemming, so that the joining work is difficult.

Japanese Patent Application Laid-Open No. 2004-189164 discloses a technique in which a center pillar (B pillar) is constituted by a press-forming member and a roll-forming member, and has a configuration as shown in FIG.
The inner part 111 of the center pillar is a press-molded member, and the outer part 112 and the glass guide part 112d are integrally formed by roll molding, but the press member so as to wrap the terminal 112b on the glass guide part side. Since the inner part side is hemmed, the caulking process has a problem that the number of processes increases as shown in FIGS.
For example, press bending as shown in FIG. 3 (a) or bending in the direction of f1, then bending from the direction of f2 as shown in (b), and further from the direction of f3 as shown in (c). It will be crimped.
Further, since the crimping direction of f3 is opposite to the crimping direction f4 of the hemming process of the terminal 112a on the outer side, there is a problem that it cannot be caulked at the same time.

As a conventional example, as shown in FIG. 4 in addition to the above, the inner part 211a and the outer part 211b are press-formed members, the glass guide part 212 is a roll-formed member, and the inner part terminal and the glass guide part terminal are spot welded. (SW) or hemming the terminal with the outer part.
However, in this type of case, not only the joining process is complicated, but also there is a problem that a concealing lip 213a must be formed on the run channel 213 of the glass guide part in order to conceal the spot welded part (SW).
These problems in the conventional example are a major factor in increasing the production cost.

JP 2003-220830 A JP 2004-189164 A

  The present invention has been made in view of the above-described technical problems inherent in the prior art, and aims to provide a door sash that is excellent in mass productivity and inexpensive and has high rigidity.

The technical gist of the present invention is that the center pillar of the door sash includes an outer portion, a glass guide portion, and an inner portion, and the outer portion and the glass guide portion are integrally formed, and the outer portion side terminal and the glass guide portion are integrally formed. Both side terminals are folded back toward the inner side of the vehicle, and both side terminals of the inner part and the folded part are respectively hemmed and joined.
In this case, it is preferable that the outer portion and the glass guide portion are integrally formed by a roll forming method, and the inner portion is formed by a press forming method.
If it does in this way, both an outer part side terminal and a glass guide part side terminal can be turned back at an acute angle toward the vehicle inner side by a roll forming method.
Here, the outer part and the glass guide part are integrally formed, the outer part side terminal and one end of the inner part are hemmed and joined, and the glass guide part side terminal and the other end of the inner part are hemmed and joined. These are the points that form a hollow portion to increase the rigidity of the center pillar.
The roll forming method has the advantage that it can be continuously mass-produced using the roll piece, and the press forming has the advantage that it is easy to form uneven portions and gradually change the cross section, and it is easy to increase the rigidity, combining both advantages Is.

  In the present invention, the inner part of the center pillar is molded by the press molding method, so that the cross-sectional shape can be gradually changed, and the uneven part can be easily formed as necessary. By downsizing the mold and forming the outer part and the glass guide part by the roll forming method, both advantages can be taken in and mass productivity can be secured.

  In particular, when the outer part and the glass guide part are integrally formed by the roll forming method, both the outer part side terminal and the glass guide part side terminal can be folded at an acute angle toward the inside of the vehicle, and the inner part and both side terminals When hemming is performed, it is possible to simultaneously crimp in the same direction, and productivity is high.

Further, since spot welding is not used between the inner part and the glass guide part, it is not necessary to form a spot welded part concealing lip in the run channel.
Therefore, the door sash according to the present invention can reduce the size of the press die, utilize the roll forming method, and simultaneously crimp (hemming) from the same direction, and can increase the rigidity of the door sash while being mass-produced at a very low cost. Can be planned.

An example of a vehicle door sash according to the present invention is shown in FIG.
The side door 1 of the vehicle is provided with a door sash in which the door glass moves up and down.
The door sash is composed of the frame 2 and the center pillar 10, and in the case of the front door shown in FIG. 1, the rear side of the door sash becomes the center pillar 10.
The center pillar 10 may be referred to as a B pillar corresponding to the case where the front pillar is referred to as an A pillar.
Although not shown, in the case of a rear (rear) door, the front side of the door sash becomes a center pillar.

The door sash is retrofitted to the main body of the door 1 in order to ensure mass productivity. In order to ensure the suction rigidity during high-speed traveling, the A1-A1 cross-sectional view is configured as shown in FIG.
The inner part 11 is press-molded in order to obtain rigidity close to the press door.
On the other hand, a bent portion 12c is formed at one end of the outer portion 12 serving as a design surface to form a groove portion having a substantially U-shaped cross section, and the glass guide portion 12d for guiding the raising and lowering of the door glass is integrated using a roll forming method. To form.
By integrally molding the outer portion 12 and the glass guide portion 12d, the mounting dimension of the run channel 13 attached to the glass guide portion is stabilized with high accuracy in relation to the outer portion, and the sliding stability of the door glass 14 is achieved. Will improve. It also improves the appearance.

The outer part 12 and the glass guide part 12d are integrally roll-formed, and the terminals on both sides are formed with folded portions inside the vehicle as shown in FIG. 1, and the terminals 11a and 11b on both sides of the inner part are wrapped from the same direction. Like that.
Then, at the time of caulking and joining with the inner portion 11, the hemming 12a and 12b can be simultaneously formed in the directions of F1 and F2, so that productivity is high.
In addition, since the deformed hollow portion H is formed by the press-molded inner portion 11 and the roll-molded outer portion 12 and the glass guide portion 12d, the cross-sectional secondary moment of the center pillar is increased, leading to improved suction rigidity. Prevents wind noise.

The center pillar cross-section end view of a door sash is shown. The external view of a door sash is shown. An example of a conventional center pillar structure is shown. An example of another conventional center pillar structure is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Frame 10 Door sash 11 Inner part 12 Outer part 12a, 12b Hemming 12d Glass guide part 13 Run channel 14 Door glass

Claims (3)

The center pillar of the door sash includes an outer part, a glass guide part, and an inner part, and integrally forms the outer part and the glass guide part,
Fold both the outer side terminal and the glass guide side terminal toward the inside of the car,
A door sash in which both end portions of the inner portion and the folded portion are joined by hemming.   The door sash according to claim 1, wherein the outer portion and the glass guide portion are integrally formed by a roll forming method, and the inner portion is formed by a press forming method.   The door sash according to claim 1 or 2, wherein both the outer part side terminal and the glass guide part side terminal are turned back toward the vehicle inner side by a roll forming method.

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