JP2008110720A - Door reinforcing structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door reinforcing structure capable of setting the rigidity of a door in a vicinity of a wheel arch part to be a desired value while suppressing formation of a dead space in a vicinity of the wheel arch part, and easily setting a deformation mode in a head-on collision of a vehicle to a desired mode. <P>SOLUTION: A reinforcing member 10 comprises a reinforcement 11, a front bracket 12 and a rear bracket 13. The reinforcement 11 is arranged above a wheel arch part 9 of a door panel inner 2, and extends in the longitudinal direction of a vehicle along the wheel arch part 9. The front bracket 12 is fixed to the door panel inner 2 while a front portion of the reinforcement 11 is separated from the door panel inner 2. The rear bracket 13 is fixed to the door panel inner 2 while a rear portion of the reinforcement 11 is separated from the door panel inner 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle door reinforcement structure including a door panel inner having a wheel arch portion at a lower end portion.

  Japanese Patent Application Laid-Open No. 2000-212366 describes a door reinforcement structure in which a reinforcement is joined to the upper surface of a wheel arch portion of a door panel inner.

Japanese Patent Application Laid-Open No. 2000-212366

  In the above reinforcing structure, the rigidity of the wheel arch part depends on the closed cross-sectional structure formed between the door panel inner and the reinforcement, and in order to ensure sufficient rigidity, the reinforcement is greatly separated from the wheel arch part. It is necessary to enlarge the closed section.

  However, if the reinforcement is greatly separated from the wheel arch portion, a large dead space is generated above the wheel arch portion, which affects the arrangement of other components. In particular, in order to avoid interference with the lower end of the window panel that has been lowered to the lowest position, there is a limit to the expansion of the closed cross section, and the rigidity of the door around the wheel arch can be set to a desired size. difficult.

  On the other hand, if the rigidity of the wheel arch portion is excessively large, the rear end portion of the door panel inner may enter the inside of the rear pillar at the time of a vehicle front collision, and the door may not be opened. Further, when the levers for opening and closing the door and the door lock are broken, there is a possibility that the door cannot be opened. For this reason, it is preferable that the deformation | transformation mode of the door at the time of a vehicle front collision is an aspect which the desired location of a door deform | transforms correctly so that an open movement may be permitted.

  However, in the closed cross-sectional structure, the rigidity of the area where the reinforcement is provided in the wheel arch tends to be uniformly high. It is difficult to set the aspect to be deformed.

  Therefore, the present invention can set the door rigidity around the wheel arch to a desired size while suppressing the occurrence of dead space around the wheel arch, and the deformation mode at the time of vehicle front collision. An object of the present invention is to provide a vehicle door reinforcement structure that can be easily set to a desired mode.

  In order to achieve the above object, a door reinforcement structure for a vehicle according to the present invention includes a door panel inner and a reinforcement member. The door panel inner has a wheel arch portion at the lower end portion that divides the upper portion of the tire accommodating space in a state where the door is closed.

  The reinforcing member has a strength member, a front fixing portion, and a rear fixing portion. The strength member is disposed above or to the side of the wheel arch portion and extends in the vehicle front-rear direction along the wheel arch portion. The front fixing part fixes the front part of the strength member to the door panel inner in a state where it is separated from the door panel inner. The rear fixing part fixes the rear part of the strength member to the door panel inner in a state where it is separated from the door panel inner.

  In the above configuration, the front part and the rear part of the strength member are respectively fixed to the front fixing part and the rear fixing part, and the front fixing part and the rear fixing part are respectively fixed to the door panel inner. In this state, the strength member is separated from the door panel inner. Therefore, an open space exists between the strength member and the door inner panel, and other components can be arranged in this space.

  Further, the rigidity of the door in the vicinity of the wheel arch portion and the deformation mode at the time of the front collision of the vehicle change according to the material, size, and shape (for example, thickness) of the front fixing portion, the rear fixing portion, and the strength member. That is, by changing these conditions, the rigidity of the door and the deformation mode at the time of the vehicle front collision can be freely changed, so the rigidity of the door around the wheel arch and the deformation mode at the time of the vehicle front collision can be changed. The desired size and mode can be easily set.

  According to the present invention, it is possible to set the door rigidity around the wheel arch portion to a desired size while suppressing the occurrence of dead space around the wheel arch portion, and to change the deformation mode at the time of vehicle front collision. It can be easily set to a desired mode.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.

  1 is a side view showing an outline of a door panel inner provided with a door reinforcing structure of the present embodiment as viewed from the outside in the vehicle width direction, FIG. 2 is an enlarged side view of the reinforcing member of FIG. 1, and FIG. 4 is a cross-sectional view taken along arrows IV-IV in FIG. 1, FIG. 5 is a cross-sectional view taken along arrows V-V in FIG. 1, and FIG. 6 is a view taken along arrows VI-VI in FIG. It is sectional drawing. In the following description, the front indicates the front of the vehicle and the rear indicates the rear of the vehicle.

  As shown in FIGS. 1-6, the door (side door) 1 of this embodiment is provided with the door panel inner 2 and the door panel outer 3, and the vehicle (what is called a cab over truck) by which the driver's seat was arrange | positioned above the engine room. ) Cab. The front of the door 1 is rotatably connected to a vehicle body (not shown), and the door opening (not shown) of the vehicle body is opened and closed by the door 1.

  The peripheral edge 2 a of the door panel inner 2 is joined to the peripheral edge 3 a of the door panel outer 3, and a closed space 4 is defined between the door panel inner 2 and the door panel outer 3. A window opening 5 is defined in the upper part of the door panel inner 2, and a window panel 6 that closes and opens the window opening 5 moves up and down in the closed space 4.

  The door panel inner 2 is integrally formed with a panel body 7 positioned on the inner side in the vehicle width direction with respect to the peripheral portion 2a, and a curved wheel arch portion 9 that connects the rear lower end edge of the panel main body 7 and the peripheral portion 2a. In preparation. The wheel arch portion 9 defines an upper portion of the tire accommodating space 8 in a state where the door 1 is closed. The wheel arch portion 9 is bent from the peripheral portion 2a and extends inward in the vehicle width direction, the middle region 9b that is bent from the inner end of the lower region 9a and extends upward, and is bent from the upper end of the middle region 9b. And an upper region 9 c that extends inward in the vehicle width direction and is connected to the panel body 7.

  A reinforcing member 10 is provided in the vicinity of the wheel arch portion 9. The reinforcing member 10 includes a reinforcement (strength member) 11, a front bracket (front fixing portion) 12, and a rear bracket (rear fixing portion) 13.

  The reinforcement 11 is disposed in the front-rear direction above the wheel arch portion 9 and has a curved shape along the wheel arch portion 9. The reinforcement 11 includes a lower plate portion 14 that faces the upper surface of the wheel arch portion 9, a first vertical plate portion 15 that bends upward from an inner end in the vehicle width direction of the lower plate portion 14, and a first vertical plate portion 15. An upper plate portion 16 bent from the upper end to the vehicle width direction outer side and opposed to the lower plate portion 14, a second vertical plate portion 17 bent upward from the vehicle width direction outer end of the upper plate portion 16, and the lower plate portion 14 And a third vertical plate portion 18 that bends downward from the outer end in the vehicle width direction of the rear end portion. The lower plate portion 14, the first vertical plate portion 15, the upper plate portion 16, the second vertical plate portion 17, and the third vertical plate portion 18 are bent from a single plate material. Depending on the shape of the wheel arch portion 9, the reinforcement 11 may be disposed on the side of the wheel arch portion 9.

  The front bracket 12 includes a lower mounting plate portion 19 joined in surface contact with the lower region 9a of the wheel arch portion 9, and a vertical intermediate plate portion 20 bent upward from the inner end in the vehicle width direction of the lower mounting plate portion 19. The horizontal intermediate plate portion 21 is bent inward in the vehicle width direction from the upper end of the vertical intermediate plate portion 20, and is bent upward from the inner end in the vehicle width direction of the horizontal intermediate plate portion 21 so as to be in surface contact with the panel body 7. And an upper mounting plate portion 22. The front end portion of the lower plate portion 14 of the reinforcement 11 is joined in surface contact with the horizontal intermediate plate portion 21. That is, the front bracket 12 is fixed to the door panel inner 2 in a state where the front portion of the reinforcement 11 is separated from the door panel inner 2 (wheel arch portion 9).

  The rear bracket 13 includes a lower mounting plate portion 23 joined in surface contact with the lower region 9a of the wheel arch portion 9, and a vertical intermediate plate portion 24 bent upward from the inner end in the vehicle width direction of the lower mounting plate portion 23. The horizontal intermediate plate portion 25 is bent inward in the vehicle width direction from the upper end of the vertical intermediate plate portion 24, and is bent upward from the inner end in the vehicle width direction of the horizontal intermediate plate portion 25 so as to be in surface contact with the panel body 7. And an upper mounting plate portion 26. The third vertical plate portion 18 at the front end portion of the reinforcement 11 is joined to the vertical intermediate plate portion 24 in surface contact. That is, the rear bracket 13 is fixed to the door panel inner 2 in a state where the rear portion of the reinforcement 11 is separated from the door panel inner 2 (wheel arch portion 9).

  Thus, the reinforcing member 10 connects the front side portion and the rear side portion of the wheel arch portion 9 in a bridging manner.

  According to the present embodiment, since the reinforcement 11 is separated from the door panel inner 2 (the wheel arch portion 9), a space 27 opened upward exists between the reinforcement 11 and the door inner panel 2. . Other parts can be arranged in this space 27. For example, the lower end portion 6a of the window panel 6 lowered to the lowest position can be arranged at a position where it does not interfere with the reinforcement 11 (reinforcing member 10).

  Further, the rigidity of the door 1 around the wheel arch portion 9 and the deformation mode at the time of a vehicle front impact change according to the material, size, and shape (for example, thickness) of the reinforcement 11, the front bracket 12, and the rear bracket 13. . That is, by changing these conditions, the rigidity of the door 1 and the deformation mode at the time of the vehicle front collision can be freely changed. The deformation mode can be easily set to a desired size and mode. Accordingly, the impact can be absorbed by accurately deforming the door 1 at the time of a frontal collision of the vehicle, and the possibility that the door 1 cannot be opened after the collision can be reduced.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the technical idea according to the present invention, even if other than the above-described embodiments. Of course. For example, in order to increase the rigidity of the reinforcement, the whole or a part of the reinforcement may have a closed cross-sectional shape, and the front bracket and the rear bracket may be formed integrally with the reinforcement.

  The present invention is applicable to a reinforcing structure for a vehicle door having a wheel arch portion.

FIG. 1 is a side view showing an outline of a door panel inner provided with a door reinforcing structure of the present embodiment as viewed from the outside in the vehicle width direction. It is an enlarged side view of the reinforcing member of FIG. It is an external appearance perspective view of the reinforcement member of FIG. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 1. It is a VV arrow sectional view of Drawing 1. It is VI-VI arrow sectional drawing of FIG.

Explanation of symbols

1: Door (side door)
2: Door panel inner 3: Door panel outer 7: Panel body 8: Tire housing space 9: Wheel arch 10: Reinforcement member 11: Reinforce (strength member)
12: Front bracket (front fixing part)
13: Rear bracket (rear fixing part)

Claims (1)

A door panel inner having a wheel arch at the lower end that partitions the upper part of the tire housing space with the door closed;
A strength member disposed above or on the side of the wheel arch portion and extending in the vehicle longitudinal direction along the wheel arch portion, and a front portion of the strength member fixed to the door panel inner in a state of being separated from the door panel inner. A reinforcing member having a front fixing portion and a rear fixing portion that fixes the strength member to the door panel inner in a state where the rear portion of the strength member is separated from the door panel inner;
A door reinforcement structure for a vehicle, comprising:

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