JP2016068645A - Member structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member structure of a vehicle which enables a body sealer to be provided at a boundary part between a flange of a member and a floor panel in a more secure manner.SOLUTION: A side member 21 of a vehicle includes: a body part 30 having a substantially U shaped cross section; and a flange 40 which is provided at an upper end part of a side wall part 30b of the body part 30 and attached to a floor panel 100. An end part of the flange 40 is bend in a direction away from the floor panel 100. A body sealer 90 is provided in a guide groove 80 formed between an end part of the flange 40 and the floor panel 100.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a member structure such as a side member or a cross member connected to a floor panel of an automobile.

  The floor panel that forms the bottom of the passenger compartment of the automobile is provided with a side member that extends in the vehicle front-rear direction on the lower surface of the floor panel. The side member has a substantially U-shaped cross section and is provided with a flange extending in the vehicle width direction. The side member is fixed to the floor panel by welding the flange to the lower surface of the floor panel. By providing such a side member on the floor panel, it is possible to suppress the deformation of the passenger compartment at the time of a collision.

  A body sealer is provided at the boundary between the flange of the side member and the floor panel. By providing the body sealer, water from the boundary portion is prevented, and rust is prevented from occurring at the end of the flange (see, for example, Patent Document 1).

  However, when the body sealer is applied to the boundary portion between the flange and the floor panel, the body sealer may be displaced from the boundary portion, or the body sealer may not be sufficiently applied to the boundary portion. As a result, there is a possibility that the boundary portion between the flange and the floor panel cannot be reliably covered. Moreover, in order to cover a boundary part reliably, increasing the quantity which apply | coats a body sealer can also be considered, but it is not preferable in terms of cost.

  Such a problem can occur not only in the side members but also in members that are connected to the floor panel, such as cross members.

JP 2012-218667 A

  The present invention has been made in view of the above situation, and an object of the present invention is to provide an automobile member structure in which a body sealer can be more reliably provided at a boundary portion between a flange rust of a member and a floor panel.

  A first aspect of the present invention that solves the above-described problems is an automobile having a box-shaped main body portion whose cross-sectional shape opens upward, and a flange that is provided on the upper portion of the main body portion and is attached to a floor panel of the automobile. In the member structure, an end portion of the flange is bent in a direction away from the floor panel, and a body sealer is provided between the end portion of the flange and the floor panel. It is in the car member structure.

  In the first aspect, the guide groove is formed by bending the flange away from the floor panel. A body sealer can be reliably applied along the guide groove.

  According to a second aspect of the present invention, in the member structure for an automobile described in the first aspect, the flange extends outward from the main body and is bent in a direction away from the floor panel. An automobile member structure comprising: a first flange portion; and a second flange portion which is continuous with the first flange portion and is bent toward the floor panel and extends toward the main body portion. .

  In the second aspect, the tip end portion of the second flange portion can not be exposed to the outside. For this reason, generation | occurrence | production of rust can be prevented in a front-end | tip part. Further, even if rust is generated at the tip, it cannot be visually recognized from the outside. Since rust is not noticeable in this way, it is possible to prevent the appearance of the side member from deteriorating.

  According to a third aspect of the present invention, in the vehicle member structure described in the second aspect, the second flange portions facing each other with the main body portion interposed therebetween are in contact with each other. In the member structure.

  In the third aspect, since the integrated second flange portions function as a reinforcement, the rigidity can be improved and the number of parts can be reduced.

  According to a fourth aspect of the present invention, in the vehicle member structure described in the third aspect, the second flange portions facing each other with the main body portion interposed therebetween are on the floor panel side or on the opposite side to the floor panel. The vehicle member structure has a bent portion bent toward the surface, and the bent portions are in surface contact with each other.

  In the fourth aspect, the second flange portions can be more reliably joined.

  According to a fifth aspect of the present invention, in the vehicle member structure according to any one of the first to fourth aspects, the flange is connected to the floor via a reinforcement forming a closed cross section with the main body. It is in the member structure of the motor vehicle characterized by being joined to the panel.

  In the fifth aspect, the rigidity can be further improved.

  ADVANTAGE OF THE INVENTION According to this invention, the member structure of the motor vehicle which can provide a body sealer more reliably in the boundary part of the flange rust of a member and a floor panel is provided.

1 is a schematic view showing a vehicle body structure of a vehicle according to Embodiment 1. FIG. 2 is a cross-sectional view of a side member according to Embodiment 1. FIG. 6 is a cross-sectional view of a side member according to Embodiment 2. FIG. 6 is a cross-sectional view of a side member according to Embodiment 2. FIG. 6 is a cross-sectional view of a side member according to Embodiment 3. FIG. 6 is a cross-sectional view of a side member according to Embodiment 4. FIG. 10 is a cross-sectional view of a side member according to Embodiment 5. FIG.

  Hereinafter, modes for carrying out the present invention will be described. In addition, description of embodiment is an illustration and this invention is not limited to the following description.

<Embodiment 1>
FIG. 1 is a schematic diagram showing a vehicle body structure of a vehicle according to the present embodiment. A vehicle 10 that is an automobile includes a vehicle body frame 20 that forms a skeleton below the vehicle body 11 on a lower side of a floor panel (not shown) (a lower side of a passenger compartment). The vehicle body frame 20 is composed of a plurality of frame members. In the present embodiment, the body frame 20 includes a pair of side members 21 extending in the front-rear direction of the vehicle 10 and a plurality of cross members 22 extending in the vehicle width direction of the vehicle 10 as examples of members. It has. Each side member 21 is formed by, for example, connecting a plurality of members, and in this embodiment, a front side member 23 that forms the front side of the vehicle 10 and a rear side member 24 that forms the rear side of the vehicle 10. It consists of and. Each cross member 22 is fixed to a predetermined position of the side member 21 by spot welding or the like.

  The structure of the vehicle body frame 20 is not particularly limited. However, since it forms a skeleton of the vehicle 10, it is preferable that its rigidity is relatively high. The vehicle body frame 20 preferably has a high overall rigidity, and in particular, it is desirable that the rigidity of the portion to which other members are connected is high.

  The structure of the side member 21 joined to the floor panel, which is an example of an automobile member structure, will be described with reference to FIG. FIG. 2 is a cross-sectional view of the side member joined to the floor panel. The following description regarding the side member 21 is common to both the front side member 23 and the rear side member 24.

  The side member 21 has a box shape whose cross-sectional shape is open upward, and includes a main body portion 30 formed on a main body portion extending in the front-rear direction of the vehicle, and a flange 40 provided on the upper portion of the main body portion 30. Have. The main body portion 30 includes a bottom surface portion 30a and side wall portions 30b extending upward (from the floor panel 100 side) from both sides of the bottom surface portion 30a. Although there is no particular limitation on the manufacturing method and material of the side member 21 as described above, for example, it can be manufactured by press-molding a steel plate.

  Note that the box shape with the cross-sectional shape opening upward refers to a shape in which the upper side of the cross-sectional shape, that is, the floor panel 100 side is open and the other portions are continuous. The cross-sectional shape of the side member 21 of the present embodiment is such that the bottom surface portion 30a and the side wall portion 30b are continuously U-shaped, and the floor panel 100 side is open without any members. Moreover, the side member 21 does not need to have a rectangular shape in which the bottom surface portion 30a and the side wall portion 30b are joined at a substantially right angle as in the present embodiment. For example, the cross-sectional shape may be a substantially circle, a substantially ellipse, or a polygon, and the floor panel 100 side may be open.

  The flange 40 extends from the main body 30 in the vehicle width direction and has an end bent in a direction away from the floor panel 100. In the present embodiment, the flange 40 includes a horizontal portion 45 and an inclined portion 46. The horizontal portion 45 is a portion extending from the upper portion of the main body portion 30, that is, the upper end portion of the side wall portion 30b, toward the outside (vehicle width direction). The inclined portion 46 is a portion that is provided continuously with the horizontal portion 45 and is a portion that is bent to the opposite side of the floor panel 100.

  The horizontal portion 45 of the flange 40 is fixed to the floor panel 100 by welding or the like. Further, since the inclined portion 46 of the flange 40 is bent so as to be separated from the floor panel 100, a guide groove 80 is formed between the floor panel 100 and the flange 40.

  The guide groove 80 functions as a guide when the body sealer 90 is applied. For example, the body sealer 90 can be reliably provided in the guide groove 80 by applying the body sealer 90 along the guide groove 80 with a tool for applying the body sealer 90.

  The body sealer 90 provided in the guide groove 80 is provided across the upper surface (surface on the floor panel 100 side) of the inclined portion 46 of the flange 40 and the surface (surface on the inclined portion 46 side) of the floor panel 100. It is possible to more reliably prevent moisture from entering the main body 30 of the side member 21 through the gap between the floor 40 and the floor panel 100. In addition, as the body sealer 90, a well-known sealing agent applied in order to fill the space | gap of junction parts, such as a steel plate of a vehicle, can be used.

  The guide groove 80 also has an effect of holding the body sealer 90. That is, the body sealer 90 is held between the floor panel 100 and the flange 40 (inclined portion 46). According to the side member 21 having such a configuration, the body sealer 90 is prevented from peeling from the guide groove 80.

  In the conventional structure member, the entire flange is planarly joined to the floor panel, and there is no guide groove 80. For this reason, application leakage was prevented by applying a large amount of body sealer so as to cover the boundary between the flange and the floor panel at the end of the flange. However, in the side member 21 of the present embodiment, if the body sealer 90 is provided in the guide groove 80, the boundary between the floor panel and the flange is covered. Therefore, it is not necessary to use a large amount of the body sealer 90. The amount used can be reduced.

  As described above, according to the side member 21 according to the present embodiment, since the guide groove 80 is formed by bending the flange 40 away from the floor panel 100, the body sealer 90 is formed along the guide groove 80. Can be reliably applied, and peeling of the body sealer 90 can be suppressed.

  Further, in the embodiment described above, the side member 21 has been described, but the same applies to the cross member 22.

  Furthermore, the aspect of bending the flange 40 from the horizontal portion 45 to the inclined portion 46 is not limited to the above-described one. For example, the angle at which the inclined portion 46 is bent may be arbitrary, and the length of the inclined portion 46 is not particularly limited as long as the body sealer 90 can be held.

<Embodiment 2>
In the side member 21 according to the first embodiment, the end of the flange 40 is exposed to the outside, but is not limited to such a mode. FIG. 3 is a cross-sectional view of the side member joined to the floor panel. In addition, the same code | symbol is attached | subjected to the same thing as Embodiment 1, and the overlapping description is abbreviate | omitted.

  The flange 40A of the side member 21A according to the present embodiment includes a first flange portion 41A and a second flange portion 42A formed by bending a member such as a single steel plate.

  The first flange portion 41 </ b> A includes a horizontal portion 45 and an inclined portion 46 as in the first embodiment. That is, the horizontal portion 45 is a portion extending outward (vehicle width direction) from the respective upper end portions of both side wall portions 30b, and the inclined portion 46 is bent in a direction away from the floor panel 100. Part.

  The second flange portion 42A is a portion that is provided continuously to the first flange portion 41A, and is a portion that is inverted and bent by approximately 180 degrees toward the floor panel 100 side and extends toward the main body portion 30 side. is there.

  A portion where the steel plate is bent from the first flange portion 41A to the second flange portion 42A is referred to as a bent portion 43 of the flange 40A. Further, the length from the proximal end portion (the portion connected to the first flange portion 41A) of the second flange portion 42A to the distal end portion 42a is approximately the same as that of the inclined portion 46 of the first flange portion 41A.

  The first flange portion 41A and the second flange portion 42A are integrated to form the flange 40A, and the horizontal portion 45 of the first flange portion 41A is joined to the floor panel 100 by welding or the like.

  A bent portion 43 that is an end of the flange 40A is bent away from the floor panel 100, and a guide groove 80 is formed between the flange 40A and the floor panel 100. A body sealer 90 is provided in the guide groove 80. The body sealer 90 covers the boundary portion between the floor panel 100 and the horizontal portion 45 of the first flange portion 41 and the tip end portion 42a of the second flange portion 42A.

  In the flange 40A having the above-described structure, the second flange portion 42A is bent from the first flange portion 41A. And the front-end | tip part 42a of 42 A of 2nd flange parts is covered with the body sealer 90 provided in the guide groove 80, and is not exposed outside.

  Here, the side member 21 </ b> A is subjected to rust countermeasures by coating the surface. However, in the side member 21A made of a single steel plate, the tip end portion 42a of the second flange portion 42A becomes a portion including the end surface, and sufficient coating is not provided on the end surface, which may cause rust.

  However, according to the side member 21 </ b> A according to the present embodiment, the front end portion 42 a is not exposed to the outside, so that generation of rust can be prevented. Further, even if rust is generated at the tip end portion 42a, it cannot be visually recognized from the outside. Thus, since rust is not noticeable, it can prevent that the external appearance of the side member 21 deteriorates.

  As a case where rusting occurs at the tip portion 42a as described above, it is conceivable that the body sealer 90 is not provided at the tip portion 42a. In this case, moisture may reach the tip 42a and the tip 42a may rust. However, in the side member 21A according to this embodiment, since the body sealer 90 is reliably provided at the boundary portion between the floor panel 100 and the flange 40A by providing the guide groove 80, the distal end portion of the second flange portion 42 is provided. 42a can be reliably prevented from rusting.

  Of course, also in the side member 21A according to the present embodiment, similarly to the first embodiment, by providing the guide groove 80, the body sealer 90 is reliably applied along the guide groove 80, and the body sealer 90 is peeled off. Can be suppressed.

  In addition, about the bending part 43, since it is the part which bent one steel plate, since the end surface is not included, the coating of a rust countermeasure is fully ensured. For this reason, in the bending part 43, it is suppressed that rust arises by the said coating.

  In the side member 21A shown in FIG. 3, the length of the second flange portion 42A is approximately the same as that of the inclined portion 46 of the first flange portion 41A, but the embodiment is not limited to such a mode. FIG. 4 is a cross-sectional view of the side member joined to the floor panel. Of the side members 21B described below, the same members as those of the side member 21A are denoted by the same reference numerals, and redundant descriptions are omitted.

  As shown in the figure, the flange 40B of the side member 21B includes a first flange portion 41B and a second flange portion 42B. Since the first flange portion 41B has the same structure as the first flange portion 41A described above, description thereof is omitted. The second flange portion 42B includes an inclined portion 47 and a horizontal portion 48. Hereinafter, the horizontal portion 45 and the inclined portion 46 of the first flange portion 41B will be referred to as the first horizontal portion 45 and the first inclined portion 46, and the inclined portion 47 and the horizontal portion 48 of the second flange portion 42B will be referred to as the second inclined portion 47 and This is referred to as a second horizontal portion 48.

  The second inclined portion 47 of the second flange portion 42B is a portion that is provided continuously with the first inclined portion 46 of the first flange portion 41B, and is bent approximately 180 degrees toward the floor panel 100 side. The second horizontal portion 48 is a portion extending toward the main body portion 30 side. The second horizontal portion 48 overlaps the first horizontal portion 45, and is positioned so that the tip end portion 42 a reaches the side wall portion 30 b of the main body portion 30.

  The first flange portion 41B and the second flange portion 42B are integrated to form the flange 40B, and the second horizontal portion 48 of the second flange portion 42B is joined to the floor panel 100 by welding or the like. .

  A guide groove 80 is formed between the floor panel 100 and the second flange portion 42 </ b> B (second inclined portion 47), and a body sealer 90 is provided in the guide groove 80.

  In the side member 21B having such a configuration, as in the first embodiment, by providing the guide groove 80, the body sealer 90 is reliably applied along the guide groove 80 and the peeling of the body sealer 90 is suppressed. can do.

  Moreover, the front-end | tip part 42a can be not exposed outside by setting it as the structure which extended the 2nd horizontal part 48 to the main-body part 30 side, and was clamped between the floor panel 100 and the 1st horizontal part 45. Thereby, it can be made hard to generate | occur | produce rust at the front-end | tip part 42a. Even if rust is generated at the tip end portion 42a, it cannot be visually recognized from the outside, so that deterioration of the appearance can be prevented.

<Embodiment 3>
In the side member 21 </ b> B according to the second embodiment, the second flange portions 42 </ b> B facing each other with the main body portion 30 interposed therebetween are separated from each other, but are not limited to such a mode. FIG. 5 is a cross-sectional view of the side member joined to the floor panel. In addition, the same code | symbol is attached | subjected to the same thing as Embodiment 2, and the overlapping description is abbreviate | omitted.

  As shown in the figure, the flange 40C of the side member 21C according to this embodiment includes a first flange portion 41C and a second flange portion 42C, and the second flange portions 42C facing each other with the main body portion 30 in contact with each other are in contact with each other. It has become the composition. Specifically, the second horizontal portion 48C of each second flange portion 42C is extended to the inside of the main body portion 30, bent downward (in a direction away from the floor panel 100), and the tip portions 42a contact each other. doing. Moreover, the front end portions 42a of the second flange portion 42C are welded and integrated.

  As described above, the side member 21C according to the present embodiment has a configuration in which the front end portions 42a of the second flange portions 42C on both sides are disposed in the main body portion 30 and cannot be visually recognized from the outside. Thereby, it is possible to prevent the front end portion 42a from being rusted, and even if the front end portion 42a is rusted, the appearance of the side member 21C can be prevented from being deteriorated.

  The integrated second flange portions 42C have a shape corresponding to reinforcement. The reinforcement is a member for improving rigidity, and is joined to the flange 40C of the side member 21C to cover the opening on the upper side of the main body 30 and form a closed cross section.

  In the side member 21 </ b> C according to the present embodiment, the integrated second flange portions 42 </ b> C exhibit a function as a reinforcement, so that the rigidity can be improved and the number of parts can be reduced.

  Also in the side member 21C according to the present embodiment, as in the first and second embodiments, by providing the guide groove 80, the body sealer 90 is reliably applied along the guide groove 80, and the body The peeling of the sealer 90 can be suppressed.

  The second flange portions 42C according to the present embodiment are in contact with each other after being bent. However, the second flange portions 42C are not limited to such a mode, and may be in contact with each other in an arbitrary shape.

<Embodiment 4>
In the side member 21C according to the third embodiment, the tip portions 42a of the second flange portions 42C are in contact with each other, but the contact mode is not limited to this. FIG. 6 is a cross-sectional view of the side member joined to the floor panel. In addition, the same code | symbol is attached | subjected to the same thing as Embodiment 3, and the overlapping description is abbreviate | omitted.

  As shown in the figure, the flange 40D has a configuration in which the second flange portions 42D facing each other with the main body portion 30 in between are in contact with each other. Specifically, the second horizontal portion 48D of each second flange portion 42D extends to the inside of the main body portion 30 and is provided with a bent portion 44 that is bent downward (in a direction away from the floor panel 100). The bent portion 44 is substantially perpendicular to the floor panel 100. The surfaces of the bent portions 44 of the second flange portion 42D are in surface contact with each other. Further, these bent portions 44 are welded and integrated.

  As described above, the side member 21D according to the present embodiment has a configuration in which the front end portions 42a of the second flange portions 42D on both sides are all disposed in the main body portion 30 and cannot be seen from the outside. Thereby, even if rust arises in the front-end | tip part 42a similarly to Embodiment 1, the deterioration on the external appearance of the side member 21B can be prevented.

  Further, the integrated second flange portions 42 </ b> D have a shape corresponding to reinforcement, and have the same effects as those of the third embodiment.

  Furthermore, since the side member 21D according to the present embodiment has a structure in which the bent portions 44 of the second flange portion 42D are in contact with each other at the surface, it is easier to join than the contact between the end surfaces of the distal end portion 42a. Welding strength can also be improved.

  In addition, although the bending part 44 of 2nd flange part 42D which concerns on this embodiment is bent toward the downward direction, it is not limited to such an aspect. For example, the bent portion 44 may be configured by bending the second flange portion 42D downward and then bending the second flange portion 42D toward the floor panel 100 side.

  Also in the side member 21D according to the present embodiment, as in the first to third embodiments, by providing the guide groove 80, the body sealer 90 is reliably applied along the guide groove 80, and the body The peeling of the sealer 90 can be suppressed.

<Embodiment 5>
In the side member 21C and the side member 21D according to the third and fourth embodiments, the second flange portion 42C and the second flange portion 42D are configured to be in contact with each other. Apart from such a structure, reinforcement may be used independently. FIG. 7 is a cross-sectional view of the side member joined to the floor panel. In addition, the same code | symbol is attached | subjected to the same thing as Embodiment 1-4, and the overlapping description is abbreviate | omitted.

  As shown in the drawing, the side member 21E according to the present embodiment includes a main body 30 and a flange 40 having the same shape as that of the first embodiment, and further includes a reinforcement 70.

  The reinforcement 70 has one surface joined to the horizontal portion 45 of the flange 40 and covers the opening at the top of the main body 30 to form a closed cross section. The opposite surface of the reinforcement 70 (the surface on the floor panel 100 side) is joined to the floor panel 100. Thus, the flange 40 is joined to the floor panel 100 via the reinforcement 70.

  The body sealer 90 is provided in a guide groove 80 formed between the inclined portion 46 of the flange 40 and the floor panel 100, and is further provided so as to cover the end portion of the reinforcement 70. Accordingly, the space between the floor panel 100, the reinforcement 70, and the flange 40 is covered, and moisture is prevented from entering the front end portion 42a and the main body portion 30.

  Such a side member 21E according to the present embodiment has the same function and effect as the side member 21 according to the first embodiment, and can further improve rigidity by providing the reinforcement 70.

  The side member 21E according to the present embodiment is provided with the reinforcement 70 based on the side member 21 according to the first embodiment. However, the side member 21E according to the present embodiment has the reinforcement 70 based on the side member according to the second to fourth embodiments. It may be provided. Even in such a case, the rigidity can be further improved by providing the reinforcement 70.

  The present invention can be used in the industrial field of automobiles.

10 Vehicle (Automobile)
21, 21A to 21E Side member 22 Cross member 30 Main body portion 40, 40A to 40D Flange 41, 41A to 41D First flange portion 42, 42A to 41D Second flange portion 42a Tip portion 43 Bending portion (end portion)
44 Bending part 70 Reinforce 80 Guide groove 90 Body sealer 100 Floor panel

Claims (5)

A vehicle member structure having a box-shaped main body portion whose cross-sectional shape is open upward, and a flange that is provided on an upper portion of the main body portion and is attached to a floor panel of the vehicle,
The end of the flange is bent in a direction away from the floor panel,
A member structure of an automobile, wherein a body sealer is provided between an end of the flange and the floor panel. The member structure of the automobile according to claim 1,
The flange is
A first flange portion extending outward from the body portion and bent in a direction away from the floor panel;
A member structure for an automobile, comprising: a second flange portion that is continuous with the first flange portion and is bent toward the floor panel and extends toward the main body. In the member structure of the automobile according to claim 2,
The member structure of an automobile, wherein the second flange portions facing each other across the main body portion are in contact with each other. In the member structure of the motor vehicle according to claim 3,
The second flange portions facing each other across the main body portion have bent portions bent toward the floor panel side or the opposite side of the floor panel, and the bent portions are in surface contact with each other. A member structure of an automobile characterized by In the member structure of the automobile according to any one of claims 1 to 4,
The said flange is joined to the said floor panel via the reinforcement which forms a closed cross section with the said main-body part. The member structure of the motor vehicle characterized by the above-mentioned.

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