JP3384545B2 - Side door structure for vehicles - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle side door structure. 2. Description of the Related Art A side door (side door) of a vehicle is provided with a reinforcing member to prevent the door from being greatly deformed when a load is applied from the front or side. For example, Japanese Patent Application Laid-Open No. H8-19263 discloses a door structure on the side of a vehicle.
There is one disclosed in Japanese Patent Application Laid-Open Publication No. 1 (1999). This vehicle door structure has a pipe-shaped reinforcing beam member disposed along the front-rear direction between a door inner panel and a door outer panel of the vehicle, one end of which is provided at an end side wall of the door inner panel, and the other end. A support bracket for fixing the reinforcing beam member to the door inner panel, wherein the support bracket is welded to an end of the reinforcing beam member, and the support bracket is welded to the vertical wall connected to the side wall of the door inner panel. The surface is continuously formed and welded and fixed by spot welding.If a load is applied from the side, stress concentration on the support bracket is relaxed to prevent deformation of the reinforcing beam member, and against load from the front The
The support bracket is prevented from peeling off from the door inner panel, so that the reinforcing beam member is prevented from being deformed outward. [0003] However, the reinforcing structure of the side door has a reduced number of parts because the supporting brackets formed separately are welded and fixed to both ends of the reinforcing beam member. Many costs are high. Also, sub-assembly of the reinforcing beam member and the support bracket,
Alternatively, assembling by a positioning member is necessary, so that the welding property is poor and the work efficiency is poor. Further, since the distance between the tip of the pipe-shaped reinforcing beam member and the rising surface formed on the support bracket and welded to the vertical wall of the inner panel is shortened to increase the strength, the support bracket is attached to the door inner. There is a problem that it is difficult for the welding gun to enter the support bracket when spot welding is performed on the vertical wall of the panel. [0004] Therefore, an object of the present invention is to provide a vehicle side door structure which can reduce costs and achieve both welding performance and strength. [0005] In order to achieve the above object, according to the first aspect of the present invention, the reinforcing member is provided between the inner panel and the outer panel of the side door along the front-rear direction of the vehicle. With one side edge diametrically
The length is bent to form a reinforcing part, and the other side edge is the one side edge.
Pipe-shaped body welded over the outside of the bent part
The edges of both sides of the part are gradually fanned outward,
The central part is flattened through a semi-cylindrical transition part with an end face.
The inner panel horizontal wall junction formed in a plate shape are spot welded to the inner panel lateral walls, open to the outside of the vehicle gradually changes in a pipe shape or Rataira plate between the inner panel horizontal wall joint and the body portion The inner panel vertical wall joint portion of the changing portion is spot-welded by contacting the inner panel vertical wall which is provided substantially perpendicularly to the inner panel horizontal wall and is continuously provided. [0006] The changing portion is such that the opening portion is the end as a vertical wall portion.
Since the rear panel has a substantially fan-shaped opening on the outer panel side , a spot welding gun can be inserted through the opening to weld the inner panel vertical wall joint. The reinforcing member is formed integrally with the main body, the inner panel horizontal wall joint, the changing part, and the inner panel vertical wall joint, so that the cost can be reduced. [0007] The inner panel lateral wall joint is spot-welded to the inner panel lateral wall extending substantially parallel to the vehicle front-rear direction and up and down, and the inner panel vertical wall joint is substantially perpendicular to the inner panel lateral wall. By being spot-welded to the vertical wall of the inner panel, when a collision load from the side of the vehicle is applied to the side door and deformation occurs such that the central part of the reinforcing member greatly enters the inside of the vehicle Since the shear load is applied to the joint of the inner panel side wall and the compressive load to the joint of the inner panel vertical wall, the reinforcing member does not easily separate from the inner panel, and the reinforcing member is deformed inside the vehicle. The amount can be reduced. Also, when a collision load from the front of the vehicle acts on the side doors from the pillars, the reinforcing members inside the side doors are located outside the vehicle from the cross-sectional center of the pillars. Although the shear load and the peeling load act on the part, the compressive load and the shear load act on the inner panel vertical wall joint, so the reinforcing member peels outward from the inner panel at the inner panel lateral wall joint. Dropping can be effectively prevented. Also, since the inner panel vertical wall joint to which the collision load from the front is input is provided between the main body and the inner panel horizontal wall joint and is provided in the changing portion that gradually changes from a pipe shape to a flat plate shape, The part between the inner panel vertical wall joint and the main body is easily crushed,
It can be prevented from being bent. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1, as an embodiment of the present invention shows a perspective view of a reinforcing member of the side door for a vehicle, Figure 2 shows the arrows II direction arrow view of the front end portion of FIG. 1, FIG. 3, FIG. 2 FIG. 4 is a sectional view taken along the arrow III-III of FIG.
FIG. 4 is a sectional view taken along the arrow IV-IV in FIG. As shown in FIG. 1 to FIG.
The main body 2 and inner panel lateral wall joints (hereinafter simply referred to as “lateral wall joints”) 3 and 4 for joining to an inner panel of a vehicle side door at both front and rear ends of the main body 2 are integrated with an iron plate. Is formed. The main body 2 has a wound pipe structure, and one side edge 2a is bent in the diametric direction over substantially the entire length as shown in FIG. 3 to form a reinforcing portion, and the other side edge 2b
Slightly overlap the outside of the bent portion and are welded at predetermined intervals in the longitudinal direction. Further, a reinforcing bead 2c is provided along the diametrical direction on one side edge 2a. The beads 2c are formed in large numbers at intervals in the longitudinal direction (axial direction). Thereby, the strength of the main body 2 in the bending direction is improved. The front lateral wall joint 3 has a front end side edge 2d, 2e of the main body 2 which is gradually expanded outward in a substantially fan shape, and a central portion 3a continuous with the pipe-shaped main body 2 has a substantially semi-cylindrical shape. And has a substantially flat shape via a changing portion 3b. The end face 3c of the change portion 3b is defined as an inner panel vertical wall joint (hereinafter, simply referred to as a "vertical wall joint"), and is located slightly behind the distal end 3d of the horizontal wall joint 3 and It stands up substantially at right angles to the lateral wall joint 3. The lateral wall joining portion 3 has a distal end portion 3d serving as a joining surface to a front lateral wall of an inner panel described later, and the vertical wall joining portion 3c abuts and is joined to a vertical wall connected to the lateral wall. . Note that a plurality of reinforcing beams 3e are provided in the lateral wall joint 3 along the longitudinal direction. Since the changing portion 3b is formed in a semi-cylindrical shape, the opening 3f is opened on the outer panel side as shown in FIGS. 2 and 5, and the outer panel 12 is not joined to the inner panel 11. In this state, it is possible to easily insert a welding gun (indicated by a two-dot chain line in FIGS. 2 and 5) for spot welding the vertical wall joint 3c to the vertical wall of the inner panel 11. The rear wall connecting portion 4 on the rear side of the vehicle body is provided at an end of a fan-shaped rear changing portion 4 b continuously provided from the main body 2. Hereinafter, the attachment to the side door will be described. As shown in FIGS. 5 and 6, the reinforcing member 1 is disposed between the inner panel 11 and the outer panel 12 of the side door 10 of the vehicle along the front-rear direction of the vehicle. The outer panel 12 is fixed to the inner panel 11 after fixing the reinforcing member 1 to the inner panel 11. The front wall 3d of the reinforcing member 1 has a front end 3d having an inner panel 11
And is welded by spot welding to the vicinity of a door hinge (not shown) of the front side wall 11a. Vertical wall joint 3
c is in contact with the vertical wall 11b which is provided at a substantially right angle to the horizontal wall 11a and is welded by spot welding.
At this time, a welding gun for spot welding is inserted from the opening 3f that opens to the outside of the vehicle in the changing portion 3b. Thereby, the vertical wall joint 3c can be easily spot-welded to the vertical wall 11b. The rear side wall joint 4 of the reinforcing member 1 is spot-welded by contacting the rear side wall (not shown) of the inner panel 11. Thus, the inner panel 11
Is fixed to the reinforcing member 1. Inner panel side wall joint 3
Is that the inner panel 11 is spot-welded to the lateral wall 11a of the inner panel 11 which extends substantially parallel to the vehicle longitudinal direction and extends in the up-down direction, and the inner panel vertical wall joint 3c is spot-welded to the inner panel vertical wall 11b. When a collision load from the side of the vehicle is applied to the side door 10 and deformation occurs such that the central portion of the reinforcing member 1 largely enters the inside of the vehicle, a shear load is applied to the inner panel side wall joint 3. Since a compressive load is applied to the inner panel vertical wall joint 3c, the reinforcing member 1 is not easily separated from the inner panel 11, and the amount of deformation of the reinforcing member 1 toward the inside of the vehicle can be reduced. it can. When a collision load from the front of the vehicle acts on the side door 10 from the pillar 15, the reinforcing member 1 inside the side door 10 is located outside the vehicle with respect to the cross-sectional center of the pillar 15. A shear load and a peeling load act on the inner panel lateral wall joint 3, but a compressive load and a shear load act on the inner panel vertical wall joint 3c. It is possible to effectively prevent the panel 11 from peeling off and falling off. Further, an inner panel vertical wall joint 3c to which a collision load from the front is input is provided between the main body 2 and the inner panel horizontal wall joint 3, and is integrally formed with a changing part 3b that gradually changes from a pipe shape to a flat plate shape. Since it is provided, it is possible to prevent the portion between the inner panel vertical wall joint portion 3c and the main body portion 2 from being easily crushed or bent. According to the present invention, a changing portion that gradually changes from a pipe-shaped main body to a substantially flat plate is opened to the outside of the vehicle, and an inner panel vertical wall joint is provided in front of the changing portion. The spot welding gun when spot welding this inner panel vertical wall joint to the inner panel can easily enter, and because it changes continuously from a pipe to a substantially flat plate, Compressive strength and bending strength are larger than those of the bracket and the separate body. Further, by integrally forming the main body and the lateral wall joint, the number of parts can be reduced, the welding property can be improved, and the working efficiency can be greatly improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted perspective view of a reinforcing member applied to a vehicle side door structure according to the present invention. FIG. 2 is a view in the direction of arrow II of a joint of a lateral wall on the front side of the reinforcing member of FIG. 1; FIG. 3 is a sectional view taken along the line III-III in FIG. 2; FIG. 4 is a sectional view taken along a line IV-IV in FIG. 2; FIG. 5 is an explanatory view showing a case where the reinforcing member shown in FIG. 1 is arranged at the vehicle side door and the front side wall joint is welded and fixed to the inner panel. 6 is a view in the direction of arrow VI in FIG. 5; [Description of Signs] 1 Reinforcement member 2 Main body 3 Inner panel horizontal wall joint (horizontal wall joint) 3b Changing part 3c Inner panel vertical wall joint (vertical wall joint) 10 Side door 11 Inner panel 11a Horizontal wall 11b Vertical wall 12 Outer panel

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuo Nagahara 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Inventor Hajime Gumi 77 Ijino, Ijino, Soja City, Okayama Pref. In-company (72) Inventor Hiroyuki Shirakami 77, Ijirino, Soja-shi, Okayama Pref.Kyoei Kogyo Co., Ltd. Kaihei 10-109537 (JP, A) Japanese Utility Model Hei 6-79615 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60J 5/00

Claims (1)

(57) [Claim 1] A terminal of a pipe-shaped main body 2 disposed in a vehicle front-rear direction inside a vehicle side door 10 formed by an inner panel 11 and an outer panel 12. Above
Joined to the horizontal wall 11a and the vertical wall 11b of the inner panel 11
Provided with horizontal wall joints 3 and vertical wall joints 3c
In the member 1, the main body 2 has one side edge 2a in the diametrical direction over the entire length.
It is bent to the diameter and length to form a reinforcing portion, and the other side edge 2b is
The lateral wall joint 3 is overlapped and welded to the outside of the bent portion of the one side edge 2 a, and the terminal side edges 2 of the main body 2.
d and 2e are gradually expanded outward in a fan shape, and a central portion 3a
Through a changing portion 3b having a semi-cylindrical shape having an end face 3c.
The end face 3c is a vertical wall joint,
The opening 3f is on the outer panel 12 side behind the end face 3c.
A side door structure for a vehicle, wherein the side door structure has a substantially fan-shaped opening .