JP2004098969A - Door structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure for a vehicle reliably preventing opening of the door of the vehicle body and collapsably deforming of the door in a front collision of the vehicle. <P>SOLUTION: In a door D of a vehicle, a front part lower frame 22A and a rear part lower frame 22B extending downward from vertical frame parts 21A, 21B in front and the rear of a door frame 2 are extending in the door body 1, and an impact beam 6 is hung between a front end wall 11 and a rear end wall 13 of the door body 1 at the lower end of the door body. A portion of the rear end wall 13 where rear end of an impact beam 6 is fixed is spaced from the rear part lower frame 22B to the rear part and set to be a position nearly opposite to a door opening rear edge 4 of the vehicle body with the door being closed. In a front collision of the vehicle, rear end of the impact beam 6 is immediately received by the door opening rear edge 4 of the vehicle body via the rear end wall 13. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle door, and more particularly, to a door structure reinforced by installing an impact beam in the door.
[0002]
[Prior art]
Conventionally, in the case of a vehicle, especially a capover type vehicle, the impact load directly acts on the front pillar at the time of a frontal collision, so an impact beam extending in the front and rear direction is installed inside the door, and the impact beam is used to (See Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 10-178565
FIGS. 5 and 6 show a typical example of a door of this type of cab-over type vehicle. In a door body 1 of a door D1 including a door outer panel 1A and a door inner panel 1B, a front vertical frame of a door frame 2 is provided. A front lower frame 22A and a rear lower frame 22B that extend downward from the lower ends of the portion 21A and the rear vertical frame portion 21B, respectively, and guide the door glass up and down are provided. The lower end of the front lower frame 22A is connected and supported on the inner surface of the door inner panel 1B. The rear lower frame 22 </ b> B extends along the rear end wall 13 of the door body 1, and the lower end is fixedly supported at the lower end of the rear end wall 13 via a bracket 222.
[0005]
The rear end wall 13 protrudes rearward so that an intermediate portion in the vertical direction is separated from the rear lower frame 22B, and forms a door lock storage part 50 for storing the door lock device 5 between the rear end wall 13 and the rear lower frame 22B. . The door lock device 5 locks the door by removably engaging a striker provided on an end face 40 of a rear pillar 4B forming a rear edge of the door opening of the vehicle body when the door is closed.
[0006]
An impact beam 6 is provided in the door body 1. The impact beam 6 has a closed cross-sectional structure made of a pipe material or a pair of panel materials, and is disposed in the front-rear direction at a lower portion in the door body 1, and a front end of the beam is fixed to a front end wall 11 of the door body 1 via a bracket. The rear terminal is fixed to the rear end wall 13 of the door body 1 via a bracket near the joint of the rear lower frame 22B. The impact beam 6 strikes between the front pillar 4A and the rear pillar 4B forming the front edge and the rear edge of the door opening of the vehicle body at the time of a frontal collision of the vehicle, and prevents the door opening and the door D1 of the vehicle body from being deformed. In some cases, an impact beam is provided on the upper side of the door body similarly to the lower part.
[0007]
[Problems to be solved by the invention]
In the conventional structure, the rear end wall 13 of the door lock storage unit 50 is opposed to the end face 40 of the rear pillar 4B when the door is closed, but the lower end of the rear end wall 13 to which the rear end of the impact beam 6 is connected is the end face of the rear pillar 4B. There is a wide gap between the two. Therefore, at the time of a frontal collision of the vehicle, the striking force of the impact beam 6 does not act immediately between the front pillar 4A and the rear pillar 4B, and the front pillar 4A is pushed in, and the door opening of the vehicle body is crushed and deformed. In particular, when a collision load acts on the impact beam 6 obliquely rearward and outward (in the direction of the white arrow F in FIG. 6), the rear end of the impact beam 6 may not be received by the end face 40 of the rear pillar 4B and may be detached therefrom. If it comes off, the crush deformation of the door opening of the vehicle body will increase.
[0008]
Accordingly, the present invention prevents the door opening of the vehicle body and the crush deformation of the door by the impact force of the impact beam provided in the door immediately between the front edge and the rear edge of the door opening of the vehicle body at the time of a frontal collision of the vehicle. An object of the present invention is to provide a vehicle door structure that can be obtained.
[0009]
[Means for Solving the Problems]
The present invention comprises a door body and a door frame forming a door window, and includes a front end wall and a rear end wall of the door body inside the door body from a front vertical frame portion and a rear vertical frame portion of the door frame, respectively. A front lower frame and a rear lower frame extending downward along are provided, and the side edges of the window glass are guided so as to be able to ascend and descend by the vertical frame portions and the lower frames. In a vehicle door structure in which an impact beam is erected between the front end wall and the rear end wall, a portion of the rear end wall to which a rear end of the impact beam is coupled is separated rearward from the rear lower frame. When the door is closed, the rear lower frame is set to a position close to the rear edge of the door opening of the vehicle body, and the rear lower frame is fixed to a rear end of the impact beam. The part of the rear end wall of the door body that joins with the rear end of the impact beam is located close to the rear edge of the door opening, so if the front edge of the door opening of the vehicle body is pushed backward during a frontal collision of the vehicle, the rear of the impact beam is immediately The terminal is received at the rear edge of the door opening via the front end wall, and the impact force of the impact beam acts to prevent deformation of the door opening and the door of the vehicle body. The rear lower frame in the door body is stably held by being fixed to the rear end of the impact beam.
[0010]
A door lock storage section for storing a door lock device between the rear lower frame and the rear lower frame is formed by projecting a vertically intermediate portion of the rear end wall of the door main body so as to be separated rearward from the rear lower frame, A lower half of the rear end wall from the intermediate portion to the lower end is formed flush with the intermediate portion, and the lower half is set at a position close to a rear edge of a door opening of the vehicle body. A rear end of the impact beam disposed at a lower portion in the door body is fixed to a lower portion of the end wall (claim 2).
[0011]
The impact beam is formed by a beam outer panel and a beam inner panel, and is disposed along the inner surface of the door inner panel, and is coupled to a rear end of the beam inner panel at a rear end of the beam outer panel in a direction of the door outer panel. A flange extending from the rear lower frame is fixed to the flange (claim 3).
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a door of a cab-over type vehicle will be described with reference to FIGS. A door D that opens and closes a door opening of a vehicle body (cabin) including a front pillar 4A and a rear pillar 4B includes a door body 1 including a door outer panel 1A and a door inner panel 1B, and a door frame 2 that forms a door window at an upper portion. It is configured.
[0013]
As shown in FIGS. 1 to 3, the door outer panel 1A of the door body 1 is substantially flat, and the outer periphery of the door inner panel 1B is bent toward the door outer panel 1A, and the front end wall 11, the lower end wall 12, and A rear end wall 13 is formed. The outer edge of the door outer panel 1A and the flanges of the outer edges of the front end wall 11, the lower end wall 12, and the rear end wall 13 are overlapped to form a protruding edge 14 around the door body. In the drawing, reference numeral 7 denotes a weather strip provided on the outer periphery of the door D to seal between the door D and the vehicle body.
[0014]
As shown in FIGS. 1A and 4, the door frame 2 is provided with a channel portion 20 on the inner periphery, and a glass run 21 having a lip sandwiching the outer periphery of the door glass 3 from both sides is fitted to the channel portion 20. Have been.
[0015]
From the lower end of the front vertical frame portion 21A and the lower end of the rear vertical frame portion 21B of the door frame 2, the front lower frame 22A and the rear lower frame 22B extend into the door body 1 and guide the ascending and descending of the door glass 3. Is provided. The front lower frame 22A and the rear lower frame 22B have substantially the same cross-sectional shape as the channel portion 20 of the door frame 2, and the upper ends of the lower frames 22A and 22B are respectively the front vertical frame portions 21A of the door frame 2. It is connected to the lower end and the lower end of the rear vertical frame portion 21B. The lower end of the front lower frame 22a is connected to and supported by a lower portion of the front end of the inner surface of the door inner panel 1B via a bracket 221. The lower end of the rear lower frame 22B is connected to the rear end of the impact beam 6 described later.
[0016]
The door D has a plurality of upper and lower portions of a front end wall 11 of the door body 1 connected to a front pillar 4A at a front edge of a door opening of a vehicle body by a hinge member (not shown), and is installed so as to be able to open and close the door opening.
[0017]
As shown in FIGS. 1 and 2, the rear end wall 13 of the door main body 1 has an intermediate portion in the vertical direction at a rear end edge of the protruding edge 14 more than an upper end portion of the rear end wall 13 along the rear lower frame 22B. The door lock accommodating portion 50 is formed so as to protrude rearward to approach the rear lower frame 22B. The door lock device 5 is installed in the door lock storage unit 50. When the door is closed, the door lock device 5 locks the door by removably engaging a striker 41 protruding from the end surface 40 of the rear pillar 4B. An opening 131 through which the striker 41 can enter is formed in the rear end wall 13 of the door lock storage portion 50, and a reinforcing plate 133 is overlapped and fixed on the inner surface around the opening 131 so as to reinforce the opening edge. I have. A reinforcing plate 42 is also provided in the rear pillar 4B.
[0018]
As shown in FIG. 1, the rear end wall 13 has a lower half 13 a formed in a vertical plane flush with the intermediate portion from the intermediate portion protruding rearward to the lower end. The lower end is gently curved so as to be close to and oppose to the rear end of the lower end wall 12.
[0019]
As shown in FIGS. 1 and 3, an impact beam 6 is provided at the lower end side of the door body 1, which extends in the front-rear direction and in a substantially horizontal direction, and extends between the lower end portions of the front end wall 11 and the rear end wall 13. I have. The impact beam 6 has a closed cross-sectional structure including a beam outer panel 61 and a beam inner panel 62, and is disposed along the door inner panel 1B. Reference numeral 8 in FIG. 3 denotes a fender portion that forms the lower edge of the door opening of the vehicle body.
[0020]
As shown in FIG. 1, the impact beam 6 has a front end coupled to a front end wall 11 via a bracket 63. The rear end of the impact beam 6 is closed by welding the beam outer panel 61 and the beam inner panel 62, and is joined integrally with the bracket 64 from the rear end of the door inner panel 1 </ b> B to the lower end of the rear end wall 13.
[0021]
The impact beam 6 has a flange 65 formed at the joint between the beam outer panel 61 and the beam inner panel 62 so as to bend from the beam outer panel 61 to the door outer panel 1A. A bracket 222 having a substantially U-shaped cross section attached to the lower end of the rear lower frame 22B is fastened to the flange 65 by a screw member so that the lower end of the rear lower frame 22B is supported by the rear end of the impact beam 6. . A service hole 132 is formed at a lower end portion of the rear end wall 13 at a position behind the flange 65 of the impact beam 6, and a tool such as a driver is inserted into the door from the service hole 132 to insert the rear lower frame 22B. And the impact beam 6 are fastened.
[0022]
The upper edge of the door body 1 extends in the front-rear direction along the inner surface of the door inner panel 1b, and is reinforced by extending a small impact beam 6A between the upper ends of the front end wall 11 and the rear end wall 13.
[0023]
According to the present embodiment, the lower end of the rear end wall 13 of the door main body 1 projects rearward flush with the door lock storage unit 50 to approach the rear end of the protruding edge 14, and the lower end of the impact beam 6 Since the rear terminal is connected, the distance between the rear terminal of the impact beam 6 and the end face 40 of the rear pillar 4B when the door is closed can be shortened. On the other hand, the lower end of the rear end wall 13 is located rearward away from the rear lower rail 22B. However, since the lower end of the rear lower frame 22B is connected to the rear end of the impact beam 6, the rear lower frame 22B does not rattle. Can be supported.
[0024]
When the front pillar 4 </ b> A is pushed rearward by a collision load during a frontal collision of the vehicle, the rear end of the impact beam 6 is instantly received by the end face 40 of the rear pillar 4 via the rear end wall 13. As a result, the impact beam 6 stretches between the front pillar and the rear pillar 4 against the collision load, and the door opening of the vehicle body and the crush deformation of the door D can be prevented. Further, even if the impact beam 6 is pushed obliquely outward rearward, the rear end of the impact beam 6 is instantly received without shifting from the end face 40 of the rear pillar 4.
[0025]
Since the cab-over type vehicle has a body located at a higher position than a general passenger car, when a front collision occurs, the lower portion of the front of the vehicle first collides. The effect of preventing the door body 1 from being crushed and deformed is effectively exhibited. In the door D of the present embodiment, the impact beam 6A is provided also on the upper end side of the door main body 1, so that the opening for raising and lowering the door glass at the upper end of the door main body 1 is prevented from being crushed and deformed. With the provision, the door strength against side collision can be further enhanced.
[0026]
In the above-described embodiment, the present invention is applied to a door in which a door lock storage portion is formed by protruding a middle portion in a vertical direction of a rear end wall of a door body rearward. The present invention is applicable not only to a door having a storage section, but also has a structure in which a rear end connecting portion of an impact beam on a rear end wall of a door body is set rearward of other portions of the rear end wall.
[0027]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the door structure of the vehicle of this invention, at the time of a frontal collision of a vehicle, the impact beam in a door exerts the tension between the front edge and the rear edge of the door opening of the vehicle body immediately, so that the door opening of the vehicle body and the door Crush deformation can be effectively prevented.
Can be.
[Brief description of the drawings]
1A and 1B show a cabin of a cab-over type vehicle having a door structure according to the present invention. FIG. 1A is a side view, and FIG. FIG.
FIG. 2 is a sectional view taken along the line II-II in FIG.
FIG. 3 is a sectional view taken along line III-III in FIG.
FIG. 4 is a sectional view taken along the line IV-IV in FIG.
FIG. 5 is a side view of a cabin of a cab-over type vehicle having a conventional door structure.
FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;
[Explanation of symbols]
D, D1 Door 1 Door main body 1A Door outer panel 1B Door inner panel 11 Front end wall 13 Rear end wall 2 Door frame 21A Front vertical frame portion 21B Rear vertical frame portion 22A Front lower frame 22B Rear lower frame 3 Door glass 4A Door opening Front edge (front pillar)
4B Door opening rear edge (rear pillar)
5 Door lock device 50 Door lock storage section 6 Impact beam 61 Beam outer panel 62 Beam inner panel 65 Flange

Claims (3)

A door body and a door frame forming a door window. The door body is provided with a lower portion along the front end wall and the rear end wall of the door body from the front vertical frame portion and the rear vertical frame portion of the door frame, respectively. A front lower frame and a rear lower frame are provided to extend to the side edges of the window glass so as to be able to move up and down by the vertical frame portions and the lower frames, and the front end wall is provided in the door body. In a door structure of a vehicle in which an impact beam is erected between
A part of the rear end wall, to which the rear end of the impact beam is coupled, is set rearward from the rear lower frame at a position close to a rear edge of a door opening of the vehicle body when the door is closed, and the rear lower frame is Is fixed to the rear end of the impact beam. A door lock storage section for storing a door lock device between the rear lower frame and the rear lower frame is formed by projecting a vertically intermediate portion of the rear end wall of the door main body so as to be separated rearward from the rear lower frame,
A lower half of the rear end wall from the intermediate portion to the lower end is formed flush with the intermediate portion, and the lower half is set at a position close to a rear edge of a door opening of the vehicle body. The rear end of the impact beam provided at a lower portion of the door body at a lower portion of the end wall, and a lower end of the rear lower frame is fixed to a rear end of the impact beam. Vehicle door structure. The impact beam is formed by a beam outer panel and a beam inner panel, arranged along the inner surface of the door inner panel, and a rear end of the beam inner panel coupled to a rear end and a rear end of the beam inner panel. The vehicle door structure according to claim 1 or 2, wherein a flange extending toward the door outer panel is formed, and the rear lower frame is fixed to the flange.

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