JP4693973B2 - Vehicle door structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle door structure capable of improving an initial drag during a collision.
[0002]
[Prior art]
Conventionally, even when an impact load exceeding a predetermined value is applied to the vehicle door from the side of the vehicle body, a door beam is installed inside the door to prevent the vehicle door from entering the vehicle interior and effectively protect the passenger. The provided structure is known.
[0003]
As this vehicle door structure, for example, (1) Japanese Patent Application Laid-Open No. 6-255365 discloses that an impact load due to a side collision is applied to a hinge and a vehicle body side opening via a vertical beam disposed at the front of the door. Has been disclosed that increases the yield strength at the time of a side collision of the door by dispersing it and transmitting it to the vehicle body side.
[0004]
(2) Japanese Patent Application Laid-Open No. 8-72543 discloses a door beam main body in which a door beam is divided into two parts and one of them is slidably press-fitted to the other to prevent the door from being deformed into the vehicle interior due to a side collision. In addition to the above function, in the case of a frontal collision or a rear collision, the door beam is allowed to undergo a sliding deformation in the front-rear direction by allowing relative sliding displacement in the reduction direction of the door beam. A technique for ensuring the door opening performance by securing a gap between the door and the pillar is disclosed.
[0005]
(3) In Japanese Patent Laid-Open No. 2000-108662, the rear end of the door beam provided on the front door is disposed so as to overlap with the hinge base of the hinge that is disposed on the center pillar and supports the rear door in a side view of the vehicle body. By doing so, the load at the time of a side collision is received by the hinge base via the rear end of the door beam, and the received load is distributed and transmitted from the hinge base to the center pillar to prevent the front door from entering the vehicle interior. It is disclosed.
[0006]
[Problems to be solved by the invention]
However, in the technique disclosed in Japanese Patent Laid-Open No. 6-255365, not only the number of parts is increased and the door structure is complicated because the vertical beam is required, but also the door weight is increased and the manufacturing cost is reduced. There is a problem that causes soaring.
[0007]
Further, in the techniques disclosed in JP-A-8-72543 and JP-A-2000-108662, since the door beam front end is merely joined to the door inner panel via a bracket, the door beam is made of high-tensile steel. Despite being a strong rigid body using (High Ten) material, etc., the support of the front end of the door beam is weak, and when the impact load received by the door beam is transmitted to the vehicle body, the bracket deforms without being able to withstand that load Therefore, the crash stroke becomes long, and as a result, the load received by the door beam cannot be efficiently transmitted to the pillar side, and the initial drag at the time of a side collision is lowered.
[0008]
In view of the above circumstances, the present invention is a vehicle door structure capable of improving the load transmission efficiency to the vehicle body by improving the door strength against side collision while realizing reduction of the door weight and product cost. The purpose is to provide.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vehicle door that is swingably supported via a hinge disposed on a front pillar, and at least a front edge portion of a door glass provided on an upper portion of the vehicle door. A main sash that surrounds and maintains the closed state of the door glass; a door beam disposed in the vehicle door extending in the longitudinal direction of the vehicle body; and a left and right front pillar extending in the vehicle width direction. In the vehicle door structure including the steering support beam to be connected, the main sash, the door beam, and the steering support beam intersect each other at a substantially single point in a side view of the vehicle body.
[0014]
In such a configuration, the main sash and the door beam intersect each other at a substantially single point in a side view of the vehicle body, so that the initial drag of the door beam is improved and the impact load input to the door beam can be positively transmitted to the front pillar. In addition, since the steering support beam intersects the main sash and the door beam at approximately one point when viewed from the side of the vehicle body, the impact load transmitted to the front pillar is received by the steering support beam. Load transmission efficiency is improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a side view of an essential part of a vehicle, FIG. 2 is a sectional front view of a vehicle door, FIG. 3 is a sectional view of an essential part III-III in FIG. 1, and FIG. 4 is a perspective view of FIG. In FIG. 4, “x” represents a welding site.
[0016]
As shown in FIG. 1, a front door 2 and a rear door 3 are disposed adjacent to each other in the vehicle width direction of the vehicle body 1 as vehicle doors, and door bodies 2a and 3a of the doors 2 and 3 are disposed. Main sashes 2b and 3b are provided on the top of the sash. The main sashes 2b and 3b surround the outer edge of the door glass 4 and keep the door glass 4 closed. The main sash 2b of the front door 2 moves up and down the front edge 4a of the door glass 4. The upper end portion 5a of the leading edge guide sash 5 that guides in the direction is joined.
[0017]
Note that the configuration of the rear door 3 is the same as that of the prior art, and therefore the description thereof is omitted.
[0018]
As shown in FIGS. 2 to 4, the front door body 2 a is formed by joining the peripheral portions of the door outer panel 6 and the door inner panel 7, and reinforcement is provided on the inner surface of the front end portion of the door inner panel 7. 8 is joined. Further, the front end surface 8a of the reinforcement 8 is swingably supported by a front pillar (so-called A-pillar) 11 via a pair of hinges 9 and 10 that are spaced apart in the vertical direction.
[0019]
Each of the hinges 9 and 10 includes a hinge base 21 formed in an L shape, and a hinge lever 23 supported at the end of the hinge base 21 via a hinge pin 22 so as to be rotatable. The bottom surface of the base 21 is fixed to the front outer pillar 11a with bolts 24a, and the hinge lever 23 is fixed to the front end surface 8a of the reinforcement 8 of the front door body 2a with bolts 24b.
[0020]
Further, the front pillar 11 forming a part of the body shell of the vehicle body 1 is formed by joining the peripheral edges of the front outer pillar 11a and the front inner pillar 11b, and is formed at a joint portion between the pillars 11a and 11b. The flange portion 11c faces the front peripheral edge of the front door 2 when closed. Reference numeral 12 denotes a front fender that covers the outer surface of the front outer pillar 11a.
[0021]
Further, the flanges 11c of the front pillars 11 that are opposed to each other in the vehicle width direction of the vehicle body 1 are connected by screwing or welding or the like via bracket portions 26 formed at both ends of the steering support beam 25. Yes.
[0022]
A cylindrical door beam 27 that reinforces the door extends in the front door body 2a in a posture inclined obliquely downward from the front of the vehicle body toward the rear. 27a and 27b are fixed to the beam brackets 28a and 28b welded to the reinforcement 8 by welding or the like.
[0023]
The door beam 27 is disposed with a clearance with respect to the door outer panel 6 and the reinforcement 8. That is, a distance between the door beam 27 and the door outer panel 6 that is not contacted and deformed when receiving a light load from the side surface is secured. Is set to a distance that can ensure a crash stroke.
[0024]
On the other hand, the front end portion 2c of the main sash 2b extends into the front door body 2a and faces between the back surface of the front end surface 8a of the reinforcement 8 and the beam bracket 28a, and is welded to the reinforcement 8 or the like. It is fixed through the means.
[0025]
The lower portion of the leading edge guide sash 5 that joins the upper end 5a to the main sash 2b is inserted into the front door body 2a and welded to a door reinforcement (not shown) welded to the door inner panel 7. It is fixed by such means.
[0026]
The door glass 4 is connected to a window regulator (not shown) disposed in the front door body 2a, and is opened and closed by the window regulator. At that time, the front edge and the rear edge of the door glass 4 are guided in the vertical direction by the front edge guide sash 5 and the rear edge guide sash 13 disposed in the front door body 2a.
[0027]
Reference numeral 29 denotes a weather strip that closes the space between the front door 2 and the vehicle body 1 when the door is closed, and is disposed over the entire periphery of the inner edge of the front door 2.
[0028]
Further, the end surface of the front end portion 27 a of the door beam 27 is opposed to the hinge lever 23 of the upper hinge 9 at a relatively close position. Further, the front end portion 2c of the main sash 2b facing the beam bracket 28a supporting the front end surface 27a and the reinforcement 8 and the shaft end surface of the steering support beam 25 are the front end portion 27a of the door beam 27. On the other hand, when viewed from the side of the vehicle body, it is arranged so as to intersect substantially one point, that is, the positional relationship is superimposed on each other.
[0029]
Next, the operation of the present embodiment having the above configuration will be described. When a large impact load acts on the front door 2 from the side surface of the vehicle body 1, this impact load acts on the door beam 27 disposed in the vicinity of the inner surface of the door outer panel 6.
[0030]
A part of the impact load acting on the door beam 27 is transmitted from the front end portion 27a of the door beam 27 to the reinforcement 8 that fixes the beam bracket 28a via the beam bracket 28a that supports the front end portion 27a. Then, the reinforcement 8 is pressed inward of the vehicle body.
[0031]
Then, the impact load transmitted to the reinforcement 8 is applied to the front pillar 11 on the vehicle body 1 side via the hinge 9 and the reinforcement 8 disposed in the vicinity of the front end portion 27a of the door beam 27. Communicated. At this time, the shaft end of the steering support beam 25 is connected to the flange 11c formed at the joining portion of the front outer pillar 11a and the front inner pillar 11b via the bracket portion 26 with respect to the front end 27a of the door beam 27. Since it is fixed so as to intersect substantially one point in view, the impact load transmitted to the front pillar 11 is received by the steering support beam 25 having rigidity.
[0032]
At that time, the front end portion 27a of the door beam 27 is fixed to the reinforcement 8 so that the front end portion 2c of the main sash 2b intersects with the vehicle width side view on the inner side in the vehicle width direction. Thus, the initial drag of the door beam 27 is improved, the side impact resistance of the front door 2 is improved, and the crash stroke of the front door 2 alone is reduced.
[0033]
Further, the side impact load applied to the front door 2 can be actively and efficiently transmitted to the vehicle body 1 side via the front pillar 11.
[0034]
Further, since the initial drag of the door beam 27 has been improved, it is only necessary to dispose one door beam 27 in the front door body 2a in an oblique direction, the number of parts can be reduced, and the door weight and product cost can be reduced. Can be planned.
[0035]
【The invention's effect】
As described above, according to the present invention, the strength of the door against a side collision can be improved, and the load transmission efficiency to the vehicle body side can be improved.
[0036]
As a result, the number of door beams can be reduced, and the door weight and product cost can be reduced accordingly.
[Brief description of the drawings]
FIG. 1 is a side view of an essential part of a vehicle. FIG. 2 is a sectional front view of a door for a vehicle. FIG. 3 is a sectional view of an essential part of III-III in FIG.
1 Body 2 Front door (vehicle door)
2b Main sash 4 Door glass 4a Front edge 9, 10 Hinge 11 Front pillar 25 Steering support beam 27 Door beam

Claims (1)

A vehicle door swingably supported via a hinge disposed on the front pillar;
A main sash that is provided at the top of the vehicle door and surrounds at least the front edge of the door glass and holds the door glass closed;
A door beam disposed in a state of extending in the longitudinal direction of the vehicle body in the vehicle door;
In a vehicle door structure comprising a steering support beam extending in the vehicle width direction and connecting left and right front pillars,
A vehicle door structure characterized in that the main sash, the door beam, and the steering support beam intersect each other at substantially one point in a side view of the vehicle body.

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