JP2010137754A - Door structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure of a vehicle capable of restraining development of corrosion on a door inner panel on which an impact bar 11 is mounted, even when a plated mounting bracket is not separately prepared for use. <P>SOLUTION: The mounting flange section 14 of a non-plated impact bar 11 is mounted on an inner panel 6 via the extendedly prepared section 12 of an existing outer-reinforcement 10 turned in a plated state while placed in the vicinity thereof. This eliminates the necessity of newly preparing a plated mounting bracket for inhibiting development of corrosion, and of mounting the rear side mounting flange section 14 of the impact bar 11 on the inner panel 6 via the new mounting bracket. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vehicle door structure.

  In manufacturing the vehicle body structural component, generally, as shown in Patent Document 1, hot pressing is performed on the workpiece, and thereafter, the corrosion-pressing coating treatment is performed on the hot pressed product.

By the way, in the hot pressing method (for example, hot pressing method), for example, the steel sheet is heated in an austenite region of 800 ° C. or higher and then hot formed, thereby ensuring the formability of the steel sheet and cooling after forming. There are some which obtain a desired material by baking. By using this hot pressing method, it is possible to increase the strength of the steel sheet and ensure high formability (high workability). For this reason, this hot pressing method is also used in the manufacture of impact bars to be door structural parts. In the impact bar, not only can the strength be increased by the hot pressing method, Using the formability, when the impact bar is molded, a mounting flange portion (mounting end portion) is formed at the end of the impact bar. As a result, the impact bar can be directly joined to the door inner panel (door body) with its mounting flange, and a special mounting bracket is prepared as in the case of mounting the pipe-like impact bar to the door inner panel. There is no need.
Special Table 2007-500782

However, the impact bar generally extends across the door body in the lateral direction in the door body (between the door outer panel and the door inner panel) while considering the height of the bumper (considering side collision). The glass guide of the window glass is located immediately above the joint portion between the mounting flange portion of the impact bar and the door inner panel. For this reason, water such as rainwater is likely to be applied to the mating portion between the mounting flange portion of the impact bar and the door inner panel, and moreover, it is easily held.
In forming the impact bar, the steel plate material is heated to a high temperature under a hot pressing method, and the plating volatilizes even if a plating material (for example, galvanized steel plate) is used for the steel plate material. Originally, a non-plated material is used as the steel plate material.
For this reason, in the door inner panel, corrosion (rust, holes based on corrosion) occurs on the mating surface with the mounting flange portion of the impact bar and the vicinity thereof, and the corrosion tends to proceed to the door inner panel. . In particular, in the side door, the lower rear side of the side door where the rear mounting flange portion of the impact bar is located is an area that is not covered by the trim from the indoor side, so the door inner panel to which the rear mounting flange portion is mounted If corrosion occurs, the corrosion (rust, holes, etc.) can be seen from the room, and its presence reduces the appearance. Therefore, despite the fact that the mounting flange is provided on the impact bar, a new plated mounting bracket is prepared, and the mounting flange of the impact bar is joined to the door inner panel via the mounting bracket. Has been.

  The present invention has been made in view of the above circumstances, and its technical problem is that corrosion progresses on the door inner panel to which the impact bar is to be attached without separately using a plated mounting bracket. An object of the present invention is to provide a vehicle door structure capable of suppressing the above-described problem.

In order to achieve the technical problem, in the present invention (the invention according to claim 1),
In the door structure of the vehicle in which the non-plated impact bar is attached to the door inner panel, which is a component of the door body, together with the plated door structure parts, with its mounting end,
Of the door structure parts in the plated state, the impact bar is attached to the door inner panel via the door structure part using a door structure part located near the attachment end of the impact bar. As an installed configuration. The preferred embodiment of claim 1 is as described in claim 2 and the following.

  According to the first aspect of the present invention, an existing door structural component that is placed in the vicinity of the mounting end portion of the non-plated impact bar is used, and the impact bar is placed via the door structural component. Therefore, it is necessary to prepare a new plated mounting bracket and attach the impact bar to the door inner panel via the new mounting bracket to prevent the progress of corrosion. Disappear. For this reason, even if it does not use separately the mounting bracket plated, it can suppress that corrosion progresses to the door inner panel which is the attachment object of an impact bar.

  According to the second aspect of the present invention, the door structural component extends within the door body so as to cross the door body so as to ensure the rigidity of the door outer panel of the door body, and is provided at the front and rear of the door inner panel. The reinforcement is attached to both ends, and the impact bar mounting end is mounted on the end of the reinforcement. The mounting end of the impact bar can be attached to the door inner panel, and the action and effect according to claim 1 can be specifically realized.

  According to the third aspect of the present invention, the end portion of the reinforcement has an extending portion that extends toward the mounting end portion of the impact bar, and the mounting end portion of the impact bar is provided on the extending portion of the reinforcement portion. Because of this, the impact bar mounting end is securely placed on the reinforcement using the high degree of freedom of placement of the reinforcement and the extension from the end of the reinforcement. Can be installed. For this reason, the effect which concerns on Claim 1 is concretely and reliably realizable.

According to the invention of claim 4, the door structural component is a door latch mounting bracket that is attached to the door inner panel in order to attach the door latch to the door inner panel, and the door latch mounting bracket is attached to the mounting end of the impact bar. Since the impact bar mounting end is mounted on the extended part of the door latch mounting bracket, the impact bar mounting end is positioned near the existing door latch. It can be attached to the door inner panel through the extended portion of the mounting bracket.
In addition, the rigidity and strength of the door latch mounting bracket itself, and the mounting rigidity and strength of the door latch mounting bracket can be increased.

  According to the invention which concerns on Claim 5, since the impact bar of a non-plating state is a hot press product, even in the case where an impact bar is shape | molded by a hot press by using a non-plating material as a steel plate raw material. The effects of claims 1 to 4 can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2, reference numeral 1 indicates a front side door 1 to which the door structure according to the embodiment is applied. The front side door 1 includes a door body 2 and a steel plate door sash 4 for supporting a window glass 3 provided on the door body 2. The door body 2 includes a steel plate door outer panel (hereinafter referred to as an outer panel) 5 and a steel plate door inner panel (hereinafter referred to as an inner panel) 6 disposed on the inner side thereof. The outer panel 5 and the inner panel 6 form an internal space between the both 5 and 6.
2 shows a state in which the outer panel 5 is removed in the state of FIG.

  As shown in FIG. 2, a front glass guide 7 and a rear glass guide 8 are provided in the upper part of the door body 2 to guide the window glass 3 to move up and down. The front glass guide 7 is located inside the front side of the front side door 1, and the rear glass guide 8 is located inside the rear side of the front side door 1.

  As shown in FIG. 2, a door latch 9 is attached to the inner panel 6 at the rear end face facing rearward (leftward in FIG. 2). When the front side door 1 is closed, the door latch 9 is engaged with a striker (not shown) fixed to a pillar (not shown) of the vehicle body through a latch opening (not shown) formed in the inner panel 6. The front side door 1 is held by the vehicle body in the closed position, and the door latch 9 is positioned at a substantially intermediate position in the vertical direction at the rear portion of the door body 2.

  Further, as shown in FIG. 2, an outer reinforcement 10 and an impact bar 11 are attached to the inner panel 6 in the door body 2. The outer reinforcement 10 extends at a substantially intermediate position in the vertical direction of the door body 2 with an inclined state in which the rear end portion (left end portion in FIG. 2) is lower than the front end portion (right end portion in FIG. 2). The front end portion is joined (welded or the like) to the front portion of the inner panel 6, and the rear end portion is joined to the rear portion of the inner panel 6. Between the outer reinforcement 10 and the outer panel 5, a plurality of columnar adhesives (not shown) are interposed at predetermined intervals in the longitudinal direction of the outer reinforcement 10. The outer panel 5 is to resist external forces from the outside through the adhesives. The rear end portion of the outer reinforcement 10 has an extended portion 12 in the present embodiment. The extended portion 12 extends with the rear end portion of the outer reinforcement 10 extended downward, and the extended portion 12 is also joined to the inner panel 6. The extended portion 12 reaches the lower rear side of the front side door 1, and the extended portion 12 is trimmed (simply shown) 19 from the indoor side in the door body 2 as shown in FIG. 3. It faces an uncovered area. Such an outer reinforcement 10 is plated as a whole and is in a plated state.

  As shown in FIG. 2, the impact bar 11 extends in parallel to the outer reinforcement 10 at a lower position of the outer reinforcement 10. Like the outer reinforcement 10, this impact bar 11 is also arranged so as to cross the door body 2 in the lateral direction (vehicle longitudinal direction) while tilting so that the rear end portion is lower than the front end portion thereof. The height position of the impact bar 11 is adjusted so as to be substantially the height position of the bumper in consideration of a side collision.

In this embodiment, the impact bar 11 is formed by using a hot press method as a hot press method. The hot press method is a method of obtaining a hardness of 1450 MPa class by heating a steel plate to 950 ° C. in a furnace and then forming it in a die and quenching by quenching with the die. By using this hot press method, It is possible to obtain high strength of the steel sheet and high formability (high workability) for the steel sheet. For this reason, the impact bar 11 uses not only high strength by the hot press method but also high formability, and the front mounting flange 13 and the rear mounting flange are provided at the front end and the rear end of the impact bar 11. Portions 14 (planar portions for direct bonding) are respectively formed. On the other hand, as the steel plate material of the impact bar 11, since the heating temperature before forming is high and the plating volatilizes, the plating material is not used and the impact bar 11 is in a non-plated state.
Such an impact bar 11 has a front mounting flange portion 13 joined (welded) to the front portion of the inner panel 6, and a rear mounting flange portion 14 on the extended portion 12 of the outer reinforcement 10. Joined (welded). In this case, the rear glass guide 8 is located above the mating portion of the rear mounting flange portion 14 and the extended portion 12 of the impact bar 11 as in the prior art. It is easy to get rainwater.

Therefore, also in such a door structure, the rear glass guide 8 exists just above the rear mounting flange portion 14 of the impact bar 11 and the impact bar 11 is in a non-plating state, as in the prior art. Corrosion occurs in the impact bar 11, and the corrosion is likely to proceed to the inner panel portion 6 a (see FIG. 3) on the lower rear side of the front side door 1 and not covered by the trim 19 from the indoor side.
However, in the present embodiment, the extended portion 12 is provided at the rear end portion of the outer reinforcement 10, and the rear mounting flange portion 14 of the impact bar 11 is joined to the inner panel 6 through the extended portion 12. Thus, the progress of corrosion from the rear mounting flange portion 14 side of the impact bar 11 to the inner panel portion 6a side is suppressed. For this reason, it is suppressed that corrosion (rust, a hole, etc.) arises in the inner panel part 6a, and it is suppressed that the appearance of the inner panel part 6a falls.

  In the present embodiment, the extended portion 12 in the plated state is provided only at the rear end portion of the outer reinforcement 10 in consideration of the environment in which the front side door 1 is easily rusted. An installation portion may be provided at the front end portion of the outer reinforcement 10, and the front end portion of the impact bar 11 may be joined to an extension portion of the front end portion of the outer reinforcement 10.

  FIG. 4 shows a second embodiment, and FIG. 5 shows a third embodiment. In each of the embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The second embodiment shown in FIG. 4 shows a modification of the first embodiment. In the second embodiment, the rear end portion 10a of the outer reinforcement 10 in a plated state (joint portion with respect to the inner panel 6) is slightly changed in position and expanded, and the outer reinforcement 10 is expanded. A rear mounting flange portion 14 of the impact bar 11 is joined (welded) to the rear end portion 10a. In this case, the joining position of the rear end portion 10a of the outer reinforcement 10 with respect to the inner panel 6 is changed downward. The rear mounting flange portion 14 of the impact bar 11 is connected to the rear portion of the outer reinforcement 10. This is to enable joining on the end portion 10a. In this case, it is utilized that the degree of freedom of arrangement of the outer reinforcement 10 is high. That is, the impact bar 11 is constrained to a predetermined height position (bumper height position) from the viewpoint of a side collision, whereas the outer reinforcement 10 ensures the rigidity of the outer panel 5. The degree of freedom of the arrangement is higher than that of the impact bar 11. For this reason, in this 2nd Embodiment, the impact bar 11 is attached on it by utilizing the property regarding arrangement | positioning of the outer reinforcement 10. In addition, the rear end portion 10a of the outer reinforcement 10 is slightly expanded because a joint surface that can join the rear mounting flange portion 14 of the impact bar 11 to the rear end portion 10a of the outer reinforcement 10 is provided. This is to ensure. As a result, the rear mounting flange portion 14 of the impact bar 11 can be joined to the rear end portion 10a of the outer reinforcement 10, and the impact bar 11 can be joined to the inner panel portion 6a from the rear mounting flange portion 14 side. The progress of corrosion can be suppressed.

The third embodiment shown in FIG. 5 shows the contents using the door latch mounting bracket 15 in a plated state as a joint for the rear mounting flange portion 14 of the impact bar 11. In the third embodiment, the door latch mounting bracket 15 mounting position with respect to the inner panel 6 is slightly lowered so that the position of the door latch mounting bracket 15 is as close as possible to the rear mounting flange portion 14 of the impact bar 11. The door latch mounting bracket 15 is provided with an extended portion 16 extending downward. The rear mounting flange portion 14 of the impact bar 11 is joined (welded) to the extended portion 16 of the door latch mounting bracket 15. For this reason, also in this third embodiment, it is possible to effectively utilize the existing door latch mounting bracket 15 to suppress the progress of corrosion from the rear mounting flange portion 14 side of the impact bar 11 to the inner panel portion 6a. .
In this case, the rear mounting flange portion 14 of the impact bar 11 is joined to the extended portion 16 of the door latch mounting bracket 15 so that the rigidity and strength of the door latch mounting bracket 15 itself and the mounting to the inner panel 6 are improved. Stiffness and strength can be increased.

  In FIG. 5, reference numeral 17 denotes an opening of the door latch mounting bracket 15 facing the latch opening formed in the inner panel 6, and reference numeral 18 denotes the door latch 9 and the door latch mounting bracket 15 for attaching to the inner panel 6 with fastening screws. This is a retaining screw insertion hole.

The front view which shows the front side door which concerns on 1st Embodiment. Explanatory drawing explaining the door structure which concerns on 1st Embodiment. The figure which looked at the front side door which concerns on 1st Embodiment from the room inner side. Explanatory drawing explaining the door structure which concerns on 2nd Embodiment. Explanatory drawing explaining the door structure which concerns on 3rd Embodiment.

Explanation of symbols

1 Front side door 2 Door body (inner panel)
6 Inner Panel 10 Outer Rain Force (Rain Force)
10a Rear end portion of outer reinforcement 11 Impact bar 12 Extended portion of outer reinforcement 14 Rear mounting bracket 15 Door latch mounting bracket 16 Door latch mounting bracket extended portion

Claims (5)

In the door structure of the vehicle in which the non-plated impact bar is attached to the door inner panel, which is a component of the door body, together with the plated door structure parts, with its mounting end,
Of the door structure parts in the plated state, the impact bar is attached to the door inner panel via the door structure part using a door structure part located near the attachment end of the impact bar. Installed,
A vehicle door structure characterized by that. In claim 1,
In order to ensure the rigidity of the door outer panel of the door body, the door structural part extends across the door body in the door body, and both ends thereof are attached to the front and rear parts of the door inner panel. Is a reinforcement that
An attachment end of the impact bar is attached on an end of the reinforcement;
A vehicle door structure characterized by that. In claim 2,
An end portion of the reinforcement has an extending portion extending toward an attachment end portion of the impact bar;
The mounting end of the impact bar is mounted on the extension portion of the reinforcement,
A vehicle door structure characterized by that. In claim 1,
The door structural component is a door latch mounting bracket that is attached to the door inner panel to attach the door latch to the door inner panel;
The door latch mounting bracket has an extending portion extending toward a mounting end of the impact bar;
The mounting end of the impact bar is mounted on the extended portion of the door latch mounting bracket,
A vehicle door structure characterized by that. In any one of Claims 1-4,
The non-plated impact bar is a hot press product,
A vehicle door structure characterized by that.

Images