JP2021154914A - Door for vehicle - Google Patents

Abstract

To provide a door for a vehicle which can effectively suppress the vibration of a door outer panel at door-closing, and can make a door closing sound a profound sound while suppressing an increase or the like of weight and a manufacturing cost.SOLUTION: In a door D for a vehicle having a reinforcing member 2 located inside a door main body part 1, extending in a door lateral width direction, connected to a door inner panel 11 at both end parts in a longitudinal direction, and joined to an inside face part of a door outer panel 10 at a middle part in the longitudinal direction, the reinforcing member 2 is set as a vertical width change part 20 in which at least a part of a region in the longitudinal direction is expanded in vertical width as progressing toward the other side from either of both the end parts in the longitudinal direction, either of both the end parts in the longitudinal direction is set as a narrow-width side end part 21, and the other is set as a wide-width side end part 22. At least a part of the wide-width side end part 22 is connected to a door-thickness direction wall part 11b out of the door inner panel 11 which extends, or is erected in a door thickness direction in the door lateral width direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to vehicle doors such as automobile side doors.

In a vehicle such as an automobile, it is preferable that the door closing sound generated when the vehicle door is closed is heavy. If the door outer panel of the vehicle door vibrates significantly when the vehicle door is closed, the door closing sound becomes a loud and light sound, and does not become a heavy sound.
Therefore, conventionally, as described in Patent Document 1, for example, a means for providing a reinforcing member (tension rigidity reinforce) for increasing the tension rigidity of the door outer panel has been proposed for a vehicle door. The reinforcing member is configured by using, for example, a member having a substantially hat-shaped cross section, is located inside the vehicle door, and extends in the width direction of the door. Both ends of the reinforcing member in the longitudinal direction are connected to the door inner panel of the vehicle door, while the intermediate portion of the reinforcing member in the longitudinal direction is joined to the inner side surface portion of the door outer panel.
According to such a configuration, the tension rigidity of the door outer panel can be increased, so that the door outer panel can be suppressed from vibrating significantly when the vehicle door is closed, and the door closing sound can be brought closer to a heavy sound. It is possible.

However, in the above-mentioned prior art, there is still room for improvement as described below.

That is, in the prior art, as a means for increasing the tension rigidity of the door outer panel, both ends in the longitudinal direction of the reinforcing member are connected to the door inner panel, but in this connection, both ends in the longitudinal direction are connected to the door. Of the inner panels, the wall extending in the width direction of the door is welded. Here, when the vehicle door is closed, not only the door outer panel but also the door inner panel vibrates in the door thickness direction, and the wall portion extending in the door width direction also vibrates. Therefore, with this vibration, the reinforcing member vibrates in the door thickness direction, and this vibration also acts on the door outer panel. As a result, it is difficult to make the door closing sound a heavy sound.

Japanese Unexamined Patent Publication No. 2007-269301

The present invention has been conceived under the above-mentioned circumstances, and effectively suppresses vibration of the door outer panel when the door is closed while avoiding problems such as an increase in weight and manufacturing cost as much as possible. However, the challenge is to provide a vehicle door that can make the door closing sound a heavy sound.

In order to solve the above-mentioned problems, the following technical measures are taken in the present invention.

The vehicle door provided by the present invention has a door main body formed by overlapping a door outer panel and a door inner panel in the door thickness direction, and is located inside the door main body and extends in the width direction of the door. A vehicle door that is provided with a reinforcing member that is connected to the door inner panel at both ends in the longitudinal direction and is joined to the inner side surface portion of the door outer panel in the middle portion in the longitudinal direction. Therefore, the reinforcing member has at least a part of the longitudinal direction as a vertical width changing portion whose vertical width expands as it advances from one of both ends in the longitudinal direction to the other. One of both end portions is a narrow side end portion, and the other is a wide side end portion, and at least a part of the wide side end portion extends in the door thickness direction of the door inner panel. Or, it is characterized in that it is connected to the wall portion in the thickness direction of the standing door in the width direction of the door.

According to such a configuration, the following effects can be obtained.
First, at least a part of the wide side end portion of the reinforcing member is connected to the door thickness direction wall portion extending or standing up in the door thickness direction of the door inner panel, and the door thickness direction wall portion is connected to the door thickness direction wall portion. Compared to the wall portion of the door inner panel extending in the width direction of the door, it is a part that is less likely to vibrate in the thickness direction of the door. On the other hand, the wide side end portion of the reinforcing member and its vicinity region have higher rigidity than the narrow width side end portion and its vicinity region, and vibration in the door thickness direction is less likely to occur. Therefore, according to the present invention, the wide side end portion of the reinforcing member that is unlikely to vibrate in the door thickness direction is connected to the door thickness direction wall portion of the door inner panel that is unlikely to vibrate in the door thickness direction. .. As a result, it is effectively suppressed that the entire reinforcing member vibrates in the direction of the door thickness, and that the door outer panel joined to the reinforcing member vibrates in the same direction, and the door closing sound is charged. You can make a solid sound with a good ring.
Secondly, the connecting direction of the reinforcing member to the wall portion in the door thickness direction of the door inner panel is the width direction of the door, and this direction intersects the wall thickness direction of the door. When, for example, a welding means is adopted as the connecting means with the reinforcing member, the effect of increasing the welding strength against vibration in the door thickness direction and making the welding peeling less likely to occur can be obtained.
Third, the door thickness direction wall portion of the door inner panel to which the wide side end portion of the reinforcing member is connected is a portion generally formed on the door inner panel, and is special and expensive when the reinforcing member is attached. There is no need to use a separate member. Therefore, it is possible to appropriately avoid the problem that the weight and the manufacturing cost increase significantly.

Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

It is a schematic perspective view which shows an example of the vehicle door which concerns on this invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. (A) is a cross-sectional view taken along the line IIIa-IIIa of FIG. 1, and FIG. 1B is a cross-sectional view taken along the line IIIb-IIIb of FIG. (A) is a front view of the reinforcing member used for the vehicle door shown in FIG. 1, (b) is a sectional view taken along line IVb-IVb of (a), and (c) is (a). It is a cross-sectional view of IVc-IVc of (d), (d) is a cross-sectional view of IVd-IVd of (a), and (e) is a cross-sectional view of IVe-IVe of (a). It is a perspective view which shows the operation of the reinforcing member shown in FIG.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

1 to 3 show a side door D as an example of a vehicle door according to the present invention. However, in FIG. 1, the door inner panel 11 shown in FIGS. 2 and 3 is omitted.
The side door D includes a hollow door main body 1 in which a door outer panel 10 and a door inner panel 11 are overlapped and joined (welded or the like) so as to face each other, a reinforcing member 2 (tension rigidity reinforcement), and an impact beam 3. I have.

A hinge portion 4 and a door lock portion (not shown) are provided in a region near the front end and a region near the rear end of the door body 1 (strictly speaking, the door inner panel 11). Although detailed illustration will be omitted, the side door D is horizontally rotatably connected to the vehicle body via the hinge portion 4, and can open and close the door opening formed on the side portion of the vehicle body. The door lock portion is a portion provided with a lock mechanism capable of switching between locking and unlocking in a state where the side door D is closed. A window glass elevating mechanism and other equipment / parts are also arranged in the side door D, but the description thereof will be omitted.

The impact beam 3 is a member for suppressing deformation of the side door D when a side collision of the vehicle occurs and the side door D receives a side collision load. For example, a high-rigidity metal pipe is used. It is configured. Of course, it can also be configured by using other members such as a metal plate. The impact beam 3 is fixed in the door main body 1 so as to be located below the reinforcing member 2 and extend in the vehicle front-rear direction (door width direction). This fixing is achieved, for example, by connecting a pair of bracket portions 30 that support both front and rear ends of the impact beam 3 to the door inner panel 11 by means such as welding. The impact beam 3 and the door outer panel 10 are close to each other, and they are adhered to each other via, for example, a mastic adhesive 6a (elastic adhesive).

The reinforcing member 2 is a member for increasing the tension rigidity of the door outer panel 10 and suppressing the vibration of the door outer panel 10 when the side door D is closed, and is arranged inside the door main body 1.
As is often shown in FIG. 4, the reinforcing member 2 has, for example, a plate shape having a laterally substantially A-shaped front view, the front end portion thereof is a narrow side end portion 21, and the rear end portion is a narrow side end portion 21. The wide side end 22 (upper end 22a, lower end 22b) has a vertical width Lb larger than the vertical width La of the narrow side end 21 and is separated into two upper and lower ends. There is. The substantially total length region of the reinforcing member 2 in the longitudinal direction is defined as a vertical width changing portion 20 in which the vertical width gradually increases as the reinforcing member 2 advances from the narrow side end portion 21 side to the wide side end portion 22 side.

More specifically, the reinforcing member 2 extends in the longitudinal direction (vehicle front-rear direction) of the reinforcing member 2 and has two beam-shaped portions 23A and 23B centered on virtual lines C1 and C2 that are not parallel to each other. The two beam-shaped portions 23A and 23B are connected to each other via the connecting portions 24 and 24a, and are integrated in a region closer to the narrow side end portion 21. Reference numerals 25 and 25a in FIG. 4 indicate openings.

As shown in FIG. 4B, the region of the reinforcing member 2 near the narrow side end portion 21 is a bulging portion 26 as a bead portion having a substantially U-shaped cross section and a flange portion connected to the upper and lower portions thereof. It has a substantially hat-like cross section having 27a and 27b. The bulging portion 26 corresponds to a portion where the two beam-shaped portions 23A and 23B are integrated. On the other hand, as shown in FIGS. 4 (c) and 4 (d), the two beam-shaped portions 23A and 23B are individually configured on the rear side of the vehicle with respect to the region closer to the narrow side end portion 21 described above. The bulging portions 26a and 26b having a substantially U-shaped cross section are bifurcated from the bulging portion 26 and extend in a series toward the wide end portion 22 side.
The connecting portion 24 has a plate shape as shown in FIG. 4 (c), and the connecting portion 24a has a substantially hat-shaped cross section as shown in FIG. 4 (e).

As shown in FIGS. 1 to 3, the reinforcing member 2 is arranged inside the door main body 1 and attached so as to extend in the front-rear direction of the vehicle. For this mounting, for example, spot welding is used, and as shown in FIG. 3A, the narrow side end portion 21 has a welded portion W1 on the wall portion 11a near the front portion of the door inner panel 11. It is connected via. The wall portion 11a is a wall portion that extends in the front-rear direction of the vehicle or stands up and faces the vehicle width direction, and the welding direction of the welded portion W1 (the connecting direction between the wall portion 11a and the narrow side end portion 21) is the vehicle. It is in the width direction.

On the other hand, the upper end portion 22a of the wide side end portion 22 has a bent piece portion 22a', and the bent piece portion 22a'is located near the rear portion of the door inner panel 11 in the door thickness direction wall portion 11b. Is connected to the door via a welded portion W2. The door thickness direction wall portion 11b is a wall portion that extends in the vehicle width direction or stands up and faces the vehicle front-rear direction (door width direction). The welding direction of the welded portion W2 is the vehicle front-rear direction.
As shown in FIG. 3B, the lower end portion 22b of the wide side end portion 22 is connected to the wall portion 11c near the rear of the door inner panel 11 via the welded portion W3. Similar to the wall portion 11a described above, the wall portion 11c is a wall portion that extends in the front-rear direction of the vehicle or stands up and faces the vehicle width direction, and the welding direction of the welded portion W3 is the vehicle width direction.

The reinforcing member 2 is close to the door outer panel 10, and as shown in FIGS. 2 and 3, the intermediate portion of the reinforcing member 2 in the longitudinal direction is attached to the inner side surface portion of the door outer panel 10 via, for example, a mastic adhesive 6. Is joined.
In FIG. 1, the door outer panel 10 has a main portion 10a having a relatively large area under the window frame portion 10b, and when the side door D is closed, the vicinity of the central portion of the main portion 10a is the largest. Easy to vibrate. On the other hand, the central portion in the longitudinal direction of the reinforcing member 2 is located near or above the central portion described above. Further, the wide side end portion 22 of the reinforcing member 2 is located in the vicinity of the door lock portion described above.

Next, the operation of the side door D described above will be described.

First, the upper end portion 22a of the wide side end portion 22 of the reinforcing member 2 is welded to the door thickness direction wall portion 11b of the door inner panel 11 via the welded portion W2. However, the door thickness direction wall portion 11b is a wall portion that extends or stands up in the door thickness direction of the door inner panel 11, and when the side door D is closed, vibration in the door thickness direction (vehicle width direction) is generated. It is a part that is unlikely to occur. On the other hand, the region closer to the wide end portion 22 of the reinforcing member 2 has higher rigidity than the region closer to the narrow side end portion 21, and vibration in the vehicle width direction is less likely to occur. Therefore, in the present embodiment, the wide side end portion 22 that is unlikely to generate vibration of the reinforcing member 2 is connected to the door thickness direction wall portion 11b that is unlikely to generate vibration of the door inner panel 11. As a result, the effect that the entire reinforcing member 2 is less likely to vibrate in the vehicle width direction can be obtained.

Further, in the present embodiment, when the reinforcing member 2 is attached, the portion where the welded portion W2 is provided is a connecting portion having almost no flexibility of misalignment in the front-rear direction of the vehicle, but the other welded portions W1 and W3 The portion provided is a connecting portion having flexibility of misalignment in the front-rear direction of the vehicle. Therefore, when the reinforcing member 2 is attached, the position of the entire reinforcing member 2 can be adjusted in the vehicle front-rear direction, and the position accuracy of the mastic adhesive 6 can be improved.

Unlike the upper end 22a, the lower end 22b of the wide side end 22 of the reinforcing member 2 is connected to the wall portion 11c that extends or stands up in the front-rear direction of the vehicle. Therefore, the lower beam-shaped portion 23B of the reinforcing member 2 is a portion more likely to generate vibration in the vehicle width direction as compared with the upper beam-shaped portion 23A. Therefore, when the side door D is closed, as shown in FIG. 5, the beam-shaped portion 23B on the lower side of the reinforcing member 2 vibrates (deflects and deforms) in the vehicle width direction as shown by the arrow Na. This vibration corresponds to the rotational movement as shown by the arrow Nb centered on the upper beam-shaped portion 23A, which is unlikely to generate vibration. Therefore, in the reinforcing member 2, the upper beam-shaped portion 23A is used as the central axis, and the lower beam-shaped portion 23B is swayed as a mass of the dynamic damper, whereby excellent vibration damping property can be obtained.

As described above, according to the present embodiment, it is effectively suppressed that the reinforcing member 2 vibrates significantly in the vehicle width direction when the side door D is closed. As a result, the vibration of the door outer panel 10 is also suppressed, and the door closing sound can be made a heavy sound with a good feeling.

Further, since the welding direction of the welded portion W2 is the vehicle front-rear direction and the direction intersects the vibration direction of the reinforcing member 2, the welding strength against the vibration is high and the welding peeling is unlikely to occur. ..
In addition, according to the present embodiment, the door thickness direction wall portion 11b of the door inner panel 11 is a portion generally formed on the door inner panel 11, and is attached to the door inner panel 11 when the reinforcing member 2 is attached. There is no need to use a special and expensive separate member. Therefore, it is possible to appropriately avoid a problem that the weight of the side door D and the manufacturing cost are significantly increased.

The present invention is not limited to the contents of the above-described embodiments. The specific configuration of each part of the vehicle door according to the present invention can be variously redesigned within the scope intended by the present invention.

In the above-described embodiment, only the upper end portion 22a of the wide side end portion 22 of the reinforcing member 2 is connected to the door thickness direction wall portion 11b of the door inner panel 11, but the present invention is limited to this. However, instead of or in addition to the upper end portion 22a, the lower end portion 22b may be connected to the door thickness direction wall portion 11b. In the present invention, at least one of the wide side end portions 22 of the reinforcing member 2 may be connected to the door thickness direction wall portion 11b.
The narrow side end portion 21 of the reinforcing member 2 can also be configured to extend in the door thickness direction or be connected to an upright wall portion (connection in the door width direction). By adopting such a configuration, it is possible to more thoroughly prevent the vibration of the reinforcing member 2 and the door outer panel 10 when the door is closed.

In the above-described embodiment, the reinforcing member 2 is configured to have two beam-shaped portions 23A and 23B, but the present invention is not limited to this, and more beam-shaped portions are provided. It is also possible to configure it. It is also possible to have a configuration that does not have a plurality of beam-shaped portions. The reinforcing member in the present invention is, in essence, a vertical width changing portion in which at least a part of the region in the longitudinal direction expands in the vertical width from one of the both ends in the longitudinal direction to the other, and both ends in the longitudinal direction. One may be the narrow side end and the other may be the wide side end.
The reinforcing member may be composed of a single member, may be composed of a combination of a plurality of members, or may be any of them. The specific shape, size, material, etc. are not limited.

The connection referred to in the present invention is not limited to spot welding, but may be welding or joining (adhesion) other than this, and may be a connection using fastening members such as bolts and nuts.
The vehicle door according to the present invention is not limited to the side door. For example, a backdoor that can rotate in the horizontal direction can be applied. In the case of a side door, the width direction of the door is the front-rear direction of the vehicle and the thickness direction of the door is the width direction of the vehicle. It is in the front-back direction.

D side door (vehicle door)
W2 Welded part 1 Door body part 10 Door outer panel 11 Door inner panel 11b Door thickness direction wall part (of door inner panel)
2 Reinforcing member 20 Vertical width change part 21 Narrow width side end 22 Wide side end

Claims (1)

The door body, which is formed by overlapping the door outer panel and the door inner panel in the door thickness direction,
It is located inside the door body and extends in the width direction of the door, and both ends in the longitudinal direction are connected to the door inner panel, while the middle portion in the longitudinal direction is joined to the inner side surface portion of the door outer panel. Reinforcing members and
It is a vehicle door equipped with
The reinforcing member has at least a part of the longitudinal direction as a vertical width changing portion in which the vertical width expands from one of the longitudinal end portions to the other. One is the narrow side end and the other is the wide side end.
A vehicle characterized in that at least a part of the wide end portion is connected to a wall portion in the door thickness direction extending or standing up in the door thickness direction of the door inner panel in the door width direction. Door for.

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