JP2015071365A - Reinforcement structure for side door for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement structure for suppressing the deformation at an automobile collision time effectively thereby to enhance the collision safety of a passenger and to lighten and simplify a reinforcement structure.SOLUTION: In the reinforcement structure of an automobile side door having a door outer panel 1 and a door inner panel 2, a reinforcement member 4 made of an aluminum alloy extrusion member is arranged between the door outer panel 1 and the door inner panel 2. The reinforcement member 4 is integrated of: an outer panel side reinforcement part 4a positioned on the side of the door outer panel 1 and an inner panel side reinforcement part 4b positioned on the side of the door inner panel 2. The reinforcement member 4 is equipped with a vertically through slit 5 for passing the window glass. The outer panel side reinforcement member 4a is jointed to the door outer panel, and the inner panel side reinforcement member 4b is jointed to the door inner panel.

Description

  The present invention relates to a reinforcing structure for an automobile door intended for collision safety, and more particularly to a reinforcing structure for an automobile side door.

  Inside the vehicle's side doors, which are surrounded by the door outer panel and door inner panel, there are reinforcement members such as door inner reinforcement, outer reinforcement (reinforcement), and door beams in the longitudinal direction of the vehicle, that is, in the direction parallel to the side door. Is done. These members are intended to improve passenger safety, that is, anti-collision safety by suppressing deformation of the door when the automobile collides.

  There are many known techniques related to the reinforcing structure intended for the collision safety of the side door, and there are, for example, Patent Documents 1 to 3.

  As shown in FIG. 1 of the same document, the reinforcing structure described in Patent Document 1 is a structure in which a continuous body capable of hydroforming forming that also serves as a door beam is welded to the inside of an inner panel and an outer panel of a door with a laser or the like. is there. However, since the inner reinforcing member and the outer reinforcing member have independent structures in this conventional example, the inner side and outer side reinforcing members are not deformed as a unit at the time of a collision, so that the collision safety is insufficient. . In addition, since the reinforcing members having a rectangular cross-sectional structure are joined together by the inner reinforcing members or the outer reinforcing members, a step of joining the respective members is required.

  Next, as shown in FIGS. 1 to 3 of the same document, the reinforcing structure described in Patent Document 2 is provided with a reinforcing plate on the inner panel (or one or both of the outer panels) to reinforce this strength and rigidity. A bead portion is formed on a plate. Also in this conventional example, the reinforcing plate is joined to the inner surface of the inner panel (or outer panel), but the inner reinforcing member (reinforcing plate) and the outer reinforcing member (reinforcing plate) are independent structures, and the inner side in the event of a collision The outer-side reinforcing material is not deformed as a unit, and the collision safety is insufficient.

  Further, as shown in FIGS. 2 and 5 of the same document, the reinforcing structure described in Patent Document 3 forms two or more closed cross sections by a belt line reinforcement having a closed cross section structure and a door body alone. At the same time, this reinforcement is arranged over substantially the entire length of the door body. In this conventional example, the beltline reinforcement is joined to the inner panel and the outer reinforcement is joined to the outer panel (see FIG. 5), respectively, but the inner reinforcement member (beltline reinforcement) and the outer reinforcement are the same as described in the above document. The structure is independent from the member (outer reinforcement) and is not connected. Therefore, the inner side and outer side reinforcements are not deformed as a unit at the time of collision, and the collision safety is insufficient.

JP 2007-172932 A JP 11-254968 A JP 2000-71769 A

  The present invention eliminates the problems of the above-described conventional side door reinforcing structure for automobiles, effectively suppresses deformation at the time of automobile collision, improves the collision safety of passengers, and reduces the weight and simplification of the reinforcing structure. It was made as a subject to plan.

  According to the first aspect of the present invention, in the reinforcing structure of a side door for an automobile having a door outer panel and a door inner panel, a reinforcing member made of an aluminum alloy extruded material is disposed between the door outer panel and the inner panel. The reinforcing member is formed by integrating an outer panel side reinforcing portion positioned on the door outer panel side and an inner panel side reinforcing portion positioned on the door inner panel side. The outer panel side reinforcing portion is joined to the door outer panel, and the inner panel side reinforcing portion is joined to the door inner panel, respectively. Reinforcement structure.

  The invention according to claim 2 is the reinforcing structure of the side door for automobile according to claim 1, wherein the reinforcing member is arranged in parallel to the width direction of the side door.

  A third aspect of the present invention is the reinforcing structure for an automobile side door according to the first or second aspect, wherein the reinforcing member has a hollow portion.

  The invention according to claim 4 is the reinforcing structure for an automobile side door according to claim 3, wherein the hollow portion is provided in the inner panel side reinforcing portion of the reinforcing member.

  According to the present invention, it is possible to effectively suppress deformation of the vehicle body at the time of a collision by providing a reinforcing structure for a side door for an automobile by a reinforcing member in which both the outer side and inner side reinforcing portions are connected and integrated. Collision safety is improved, and the reinforcing member can be reduced in weight and simplified, the number of parts can be reduced, and the cost can be reduced. That is, the integrated reinforcing member of the present invention serves as a structure for reinforcing a side door for an automobile, in a transmission path of a collision load from the front of the vehicle body that is sequentially transmitted from the front side of the vehicle body to the rear side of the vehicle body. positioned. More specifically, the integrated reinforcing member of the present invention is located in a vehicle body transmission path of a collision load in front of the vehicle body that is transmitted from a side frame that is a vehicle body structural member on the front side of the vehicle body. ing. For this reason, it functions as a reinforcing member against this collision load, can effectively suppress deformation of the vehicle body at the time of collision, and improve collision safety.

  Also, by making the reinforcing member made of an aluminum alloy extruded shape, it is possible to make a single structure with a high degree of freedom in selecting the cross-sectional shape that matches the shape of the door, and the inner side and outer side reinforcing members are integrated. Therefore, it is not necessary to perform joining such as spot welding, so that sufficient strength and rigidity of the reinforcing member can be easily exhibited.

  Furthermore, by using the same extruded profile, it is possible to easily form a flange portion for joining an inner panel, an outer panel, etc. to the reinforcing member, and a crushing portion adapted to the shape of the inner surface of the panel or the shape of other members. Therefore, joining and disposing operations can be performed efficiently.

  Moreover, the structure which has a hollow part in a reinforcement member can raise the intensity | strength and rigidity of a reinforcement member, maintaining the weight reduction, and can improve the safety | security at the time of a collision more.

  In addition, it is possible to avoid interference at the time of raising and lowering the window by providing the reinforcing member with a slit for passing through the window glass so as to penetrate vertically.

The secondary cross-section explanatory drawing of the side door which shows Embodiment 1 of this invention. FIG. 3 is a plan view cross-sectional explanatory view of the first embodiment. The secondary cross-section explanatory drawing of the side door which shows Embodiment 2 of this invention. FIG. The secondary cross-section explanatory drawing of the side door which shows Embodiment 3 of this invention. FIG. The secondary cross-section explanatory drawing of the side door which shows Embodiment 4 of this invention. FIG. 6 is a perspective explanatory view of the fourth embodiment. The secondary cross-section explanatory drawing of the side door which shows Embodiment 5 of this invention. The secondary cross-section explanatory drawing of the side door which shows Embodiment 6 of this invention. The secondary cross-section explanatory drawing of the side door which shows Embodiment 7 of this invention.

  The present invention will be described in detail with reference to embodiments shown in the accompanying drawings.

(Embodiment 1)
1 and 2, the vehicle side door has a door outer panel 1 on the outside of the vehicle (hereinafter abbreviated as “outer panel”) and a door inner panel 2 (hereinafter abbreviated as “inner panel”) on the inside of the vehicle. The window glass 3 is provided in the middle position. And between the outer panel 1 and the inner panel 2, the reinforcement member 4 is arrange | positioned over the full length in the state extended in parallel with the width direction (vehicle length direction) of the door for door reinforcement. This reinforcing member 4 has a substantially H-shaped cross section (longitudinal cross section) made of an aluminum alloy extruded profile, and the reinforcing portion 4a on the outer panel 1 side and the reinforcing portion 4b on the inner panel 2 side are connected via a connecting portion c. , Which is an integrated unitary structure. The reinforcing portion 4a on the outer panel 1 side and the reinforcing portion 4b on the inner panel 2 side have flange portions f formed at the upper and lower end portions according to the inner surface shape of the panel, and the reinforcing member 4 is interposed via these flange portions f. To the outer panel 1 and the inner panel 2 (spot, MIG, TIG, laser, etc., known general-purpose appropriate welding means), mechanical joining (by bolts, rivets, etc.), known, commercially available, general-purpose adhesives, etc. It is joined and fixed by joining means. In addition, this joining and fixing | fixed part are displayed by the rectangular filling part in FIG. 1 (Hereafter, it is the same also in the figure of other embodiment). Further, the central portion of the connecting portion c connecting the reinforcing portion 4a and the reinforcing portion 4b of the reinforcing member 4 passes through the window glass that allows the window glass 3 to be raised and lowered in accordance with the width and thickness of the window glass 3. The slit 5 is provided in parallel with the width direction of the door in a state of penetrating vertically.

  Embodiment 1 is an example of a so-called solid type in which the reinforcing member 4 does not have a hollow portion. Hereinafter, a hollow type embodiment in which the reinforcing member 4 has a hollow portion will be described.

(Embodiment 2)
The second embodiment will be described with reference to FIGS. Between the outer panel 1 and the inner panel 2, a reinforcing member 4 made of an aluminum alloy extruded shape is disposed over the entire length in a state extending in parallel with the door width direction (vehicle length direction) as in the first embodiment. It is installed. The reinforcing member 4 has a single structure in which the reinforcing portion 4a on the outer panel 1 side and the reinforcing portion 4b on the inner panel 2 side are connected and integrated through a connecting portion c, but the reinforcing portion on the inner panel 2 side. It differs from the previous embodiment in that 4b has a hollow portion s. That is, the reinforcing part 4b on the inner panel 2 side has a rectangular cross section, and includes two hollow parts s that are vertically partitioned by the reinforcing rib r. On the other hand, the reinforcing portion 4a on the outer panel 1 side has a solid structure and has a trapezoidal shape with a cross-section in the horizontal direction, and has flange portions f formed at the upper and lower end portions in accordance with the inner surface shape of the panel. The reinforcing member 4 is joined and fixed to the outer panel 1 and the inner panel 2 by the joining means via the flange portion f of the reinforcing portion 4a and the inner side wall surface of the reinforcing portion 4b. In the same manner as in the first embodiment, reference numeral 5 denotes a slit for passing through the window glass, which is provided so as to penetrate through the central portion connecting both the reinforcing portions a and b of the reinforcing member 4.

  According to this embodiment, it has a structure having two hollow portions s partitioned by the reinforcing ribs r in the reinforcing portion b located on the inner panel 2 side on the vehicle inner side of the connected and integrated reinforcing member 4. Therefore, compared with the first embodiment, the strength and rigidity of the occupant-side reinforcing portion b can be particularly increased, and collision safety can be further improved.

(Embodiment 3)
The present embodiment will be described with reference to FIGS. 5 and 6 focusing on differences from the previous embodiment 2. FIG. The reinforcing member 4 disposed between the outer panel 1 and the inner panel 2 is a box body having a rectangular cross section as a whole. The reinforcing member 4 has a hollow portion s not only in the reinforcing portion 4b on the inner panel 2 side but also in the reinforcing portion 4a on the outer panel 1 side. That is, the reinforcing portion 4b on the inner panel 2 side is provided with two hollow portions s that are vertically partitioned by reinforcing ribs r, as in the previous embodiment, while the reinforcing portion 4a on the outer panel 1 side is a single unit. The hollow portion s is formed so as to enter the inner panel 2 side slightly from the position of the central window glass 3, and is adjacent to the two hollow portions on the inner panel side, Both reinforcing parts 4a and 4b are integrated. The reinforcing member 4 is joined and fixed to the outer panel 1 and the inner panel 2 by joining means via the outer side wall surface of the reinforcing portion 4a and the inner side wall surface of the reinforcing portion 4b. Further, slits for passing through the window glass are provided on the upper wall and the lower wall of the reinforcing portion 4a on the outer panel 1 side so as to penetrate the window glass 3 at positions corresponding to the raising and lowering of the window glass 3, respectively.

  According to this embodiment, the structure which has a hollow part in both the reinforcement part 4a located in the outer panel 1 side of the vehicle outside of the integrated reinforcement member 4, and the reinforcement part b located in the inner panel 2 side of the vehicle inside. Therefore, compared with the previous embodiment 2, the strength and rigidity of the reinforcing member 4 can be further increased as a whole, and collision safety can be further improved.

(Embodiment 4)
The fourth embodiment will be described with reference to FIGS. The reinforcing member 4 of this embodiment also has a hollow part in both the reinforcing part 4a on the outer panel 1 side and the reinforcing part b on the inner panel 2 side. The reinforcing member 4 has a single hollow portion s on both sides of the outer and inner parts, and a cross section in which these are connected and integrated via a plate-like connecting portion c at an intermediate portion in the height direction is substantially. It has an H shape. The upper wall portion of the outer side of the reinforcing portion 4a has a curved shape according to the inner surface shape of the upper portion of the outer panel 1, and the upper wall portion of the inner portion of the reinforcing portion 4b has a curved shape according to the inner surface shape of the upper portion of the inner panel 1. Have. A slit 5 for passing through a window glass is provided through the plate-like connecting portion of both the reinforcing portions 4a and 4b.

  According to this embodiment, compared to the first and second embodiments, the strength and rigidity of the reinforcing member 4 can be increased, and collision safety can be further improved. Since the connecting portion c corresponding to the position of the plate is plate-shaped and is not a hollow portion, a slit for passing through the window glass may be provided in one place (one plate), and the processing operation is easy.

(Embodiments 5 to 7)
Other embodiments will be described with reference to FIGS. In the fifth embodiment (FIG. 9), the reinforcing portion b on the inner panel 2 side of the reinforcing member 4 in the fourth embodiment has two hollow portions s that are vertically partitioned by reinforcing ribs r. This is an example in which the connecting portion c of the portions 4a and 4b is positioned at the lower end thereof.

  In the sixth embodiment (FIG. 10), the reinforcing member 4 is a box body having a substantially rectangular cross section as a whole, and has hollow portions s in the reinforcing portions a and b on both sides, and further includes a window glass 3. This is an example in which a hollow portion s is also provided at an intermediate portion between both reinforcing portions a and b at the center, and three hollow portions are continuously formed in the door thickness direction (vehicle width direction). The hollow part of the intermediate part is formed by the upper and lower connecting parts c in the reinforcing parts a and b. Reference numeral 5 denotes a window glass passage slit provided in the upper and lower connecting portions c.

  In Embodiment 7 (FIG. 11), the reinforcing member has a hollow portion with a rectangular cross section in both the reinforcing portion 4a on the outer panel 1 side and the reinforcing portion b on the inner panel 2 side, and both the reinforcing portions 4a. In addition to positioning the connecting portion c of 4b at the lower end thereof, flange portions f formed according to the inner surface shapes of the outer panel 1 and the inner panel 2 at the upper and lower ends of the reinforcing portions 4a and 4b, respectively. This is an example.

  According to the above-described embodiment of the present invention, as a reinforcing structure for an automobile side door in which both the outer side and inner side reinforcing portions are connected and integrated, the deformation of the vehicle body at the time of the vehicle body collision can be effectively suppressed, and the collision Safety is improved. In other words, it is located on the vehicle body transmission path of the collision load in front of the vehicle body, which is transmitted from the side frame that is the vehicle body structural member on the front side of the automobile body, and functions as a reinforcing member against this collision load, Deformation can be effectively suppressed, and collision safety can be improved. Further, the reinforcing member can be reduced in weight and simplified, the number of parts can be reduced, and the cost can be reduced. In the description of these embodiments, typical embodiments of the present invention have been described with reference to the drawings, but the present invention is not limited to or limited to these embodiments. In the following, supplementary explanations will be made on the modifications and preferred forms that have not been mentioned so far from the viewpoint of the spread of the present invention.

  The material of the reinforcing structure of the present invention and an aluminum alloy extruded shape applied as a processed product will be described. The aluminum alloy extruded shape is lightweight and has a uniform cross-sectional shape in the longitudinal direction, and can be easily manufactured even with a long material. In particular, an aluminum alloy extruded shape provided with a hollow portion has a high strength and rigidity with respect to a compressive force in the axial direction, has a characteristic that it is difficult to buckle, and even deforms uniformly. Therefore, when applied as a reinforcing member for a side door, the deformation load at the time of a vehicle body collision is large, the deformation can be effectively suppressed, and the collision safety can be improved.

  The aluminum alloy as the material used for the extruded profile is preferably selected from 5000 series, 6000 series, and 7000 series, which are JIS or AA standards having relatively high strength. These aluminum alloys can be manufactured relatively easily by an ordinary hot extrusion process, and an extruded profile having an arbitrary uniform cross-sectional shape in the longitudinal direction, which is necessary as the reinforcing material. For this reason, it can respond to the reinforcement member of the side door of various cross sections demonstrated in previous embodiment, and is advantageous also in the manufacture and procurement of a reinforcement member.

  In addition, the aluminum alloy can be tempered (heat treatment) or room temperature age-hardening restored after hot extrusion to adjust the strength, workability, etc. to the desired range, and the design of the reinforcing structure is easy. There is. For example, since excellent workability can be imparted by the room temperature age-hardening restoration process, when joining the reinforcing member to the outer panel or the inner panel, the flange part for joining on the reinforcing member side is processed according to the inner surface shape of the panel, It is easy to form, and in addition to the shape of the inner surface of the place other than the joint flange, or other members and parts arranged inside the panel, in order to secure the joint surface and avoid interference At the same time, it is easy to correct the shape appropriately by crushing the outer surface of the corresponding part.

  With respect to the reinforcing member of the present invention, all of the above embodiments are examples of a single structure. However, if the outer panel side reinforcing part and the inner panel side reinforcing part are integrated, the two reinforcing parts are separately provided. It is also possible to connect and integrate the two by an appropriate joining means at the stage where they are manufactured as an extruded shape and are again incorporated into the door as a reinforcing member.

  Further, in the above embodiment, the reinforcing member is disposed in the door panel in parallel with the door width direction (vehicle length direction). However, the present invention is not limited to this and may be provided in an oblique direction. .

  In addition, as for the hollow portion of the reinforcing member, in the above-described embodiment, there is shown an example in which the outer panel side reinforcing portion has one hollow portion and the inner panel side reinforcing portion has two hollow portions, but the outer panel side reinforcing portion has a hollow portion. Of course, a structure having two or more hollow portions of the inner panel side reinforcing portion may be used. In particular, when the number of hollow parts is increased by dividing the single hollow part of the inner panel side reinforcing part with a plurality of reinforcing ribs, the strength and rigidity of the reinforcing part inside the vehicle are further increased by the action of the reinforcing ribs, and Since the safety at the time of collision is greatly improved, it can be said that it is desirable to increase the weight within a range that does not impair the weight reduction.

  The cross-sectional shape of the reinforcing member is not limited to that shown in the embodiment. As long as there is no hindrance to joining and fixing with the outer panel and the inner panel, any shape can be appropriately adopted.

  The thickness of the reinforcing portion forming the hollow portion, that is, the extruded hollow mold material, is preferably 1 to 7 mm in consideration of both strength, rigidity, and weight reduction (weight increase). Further, from the viewpoint of ensuring safety for passengers, it is also effective to make the thickness of the hollow mold material on the inner panel side relatively larger than that on the outer panel side within the above range.

  In addition, regarding the means for joining the reinforcing member, the outer panel, and the inner panel 2, in the first embodiment, it has been described that any means such as welding, mechanical joining, and adhesive may be used. (Appearance beauty) becomes a problem, so joining with an adhesive or the like is recommended.

1: Door outer panel 2: Door inner panel 3: Window glass 4: Reinforcing member 4a: Outer panel side reinforcing portion 4b: Inner panel side reinforcing portion 5: Slit s: Hollow portion f: Flange portion c: Connecting portion

Claims (4)

  In a reinforcing structure of an automobile side door having a door outer panel and a door inner panel, a reinforcing member made of an aluminum alloy extruded shape member is disposed between the door outer panel and the inner panel, and the reinforcing member includes the door The outer panel side reinforcing part located on the outer panel side and the inner panel side reinforcing part located on the door inner panel side are integrated, and a slit for passing through the window glass vertically penetrates the reinforcing member. A reinforcing structure for a side door for an automobile, wherein the outer panel side reinforcing portion is joined to a door outer panel, and the inner panel side reinforcing portion is joined to a door inner panel.   The reinforcement structure of the side door for motor vehicles of Claim 1 with which the said reinforcement member is arrange | positioned in parallel with the width direction of a side door.   The reinforcement structure of the side door for motor vehicles of Claim 1 or 2 in which the said reinforcement member has a hollow part. The reinforcement structure of the side door for motor vehicles of Claim 3 which the said hollow part has in the inner panel side reinforcement part of the said reinforcement member.