JP3708048B2 - Sliding door structure for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding door structure for a vehicle, and more particularly to a sliding door structure for a vehicle having a sliding mechanism at a lower portion of the sliding door.
[0002]
[Prior art]
Conventionally, an example of a sliding door structure for a vehicle is shown in Japanese Patent Laid-Open No. 8-25971.
[0003]
As shown in FIG. 3, in this vehicular sliding door structure, a reinforcement 102 is disposed on the inner surface of the lower portion of the front end of the sliding door 100, and a roller is provided inside the lower portion of the front end of the sliding door 100 via the reinforcement 102. A slide roller (not shown) is attached via the arm 104. Further, a reinforcing wall portion 108 that reinforces the attachment portion of the down stopper 106 at the lower front end of the slide door 100 is integrally formed at the front end portion of the reinforcement 102, and the mail hook of the down stopper 106 is interposed via the reinforcing wall portion 108. 106A is attached to the lower part of the front end of the sliding door 100. As a result, the rigidity of the mounting portion of the down stopper is increased without increasing the number of parts and assembly man-hours.
[0004]
[Problems to be solved by the invention]
However, in such a vehicle sliding door structure, since the input from the roller arm 104 is concentrated on the rear end portion of the reinforcement 102, the rear end portion of the reinforcement 102 is reinforced as shown in FIG. By arranging the reinforcement 110 below the inside of the front part of the slide door 100 along the vehicle front-rear direction, the vehicle vertical and front-rear rigidity is ensured. Further, an impact beam 112 is disposed from the front part to the rear part at a substantially central part in the vertical direction of the slide door 100. As a result, such a sliding door structure for a vehicle has a problem that the number of parts is large and the weight is heavy.
[0005]
An object of the present invention is to obtain a sliding door structure for a vehicle that can reduce the number of parts and the weight in consideration of the above facts.
[0006]
[Means for Solving the Problems]
In the first aspect of the present invention, when the slide mechanism has a slide mechanism at the lower front end of the slide door,
The slide mechanism mounting portion reinforcing means for reinforcing the slide mechanism mounting portion of the slide door and the impact beam disposed from the front end lower portion to the rear portion of the slide door are integrated .
[0007]
Therefore, since the mounting portion reinforcing means of the sliding mechanism that reinforces the mounting portion of the sliding mechanism in the sliding door and the impact beam disposed from the lower front end to the rear portion of the sliding door are integrated, the sliding door is opened strongly. It is possible to efficiently absorb the impact at the time of strong closing by using the length of the impact beam in the vehicle front-rear direction. As a result, the number of parts can be reduced and the weight can be reduced as compared with the configuration in which the mounting portion reinforcing means of the slide mechanism that supports the slide mechanism and the impact beam are separated as in the conventional structure.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a sliding door structure for a vehicle according to the present invention will be described with reference to FIGS.
[0009]
In the figure, the arrow FR indicates the vehicle forward direction, and the arrow UP indicates the vehicle upward direction.
[0010]
As shown in FIG. 2, the vehicle 10 according to the present embodiment is a so-called minivan, and includes a slide door 12 that can be opened and closed by moving in the vehicle front-rear direction on the vehicle body side wall 10 </ b> A. The slide door 12 is supported by the vehicle body side wall 10A at three locations, ie, an upper portion 12A and a lower portion 12B at the front end and a vicinity 12C in the vertical direction center portion at the rear end. Further, an upper roller (not shown) as a sliding mechanism is provided at the front upper portion 12A of the sliding door 12, and a lower roller (not shown) as a sliding mechanism is provided at the lower end 12B of the sliding door 12 at the rear end of the sliding door 12. A center roller (not shown) as a slide mechanism is disposed in the vicinity of the center portion 12C in the vertical direction of each of these, and by these rollers and the upper rail, the lower rail and the center rail as the slide mechanism disposed on the vehicle body side, The slide door 12 can slide between a closed position and an open position.
[0011]
As shown in FIG. 1, the slide door 12 is provided with a reinforcing beam 20 in which the mounting portion reinforcing means of the slide mechanism and the impact beam are integrated from the lower portion 12B at the front end to the rear portion 12D. The front end portion 20A of the reinforcing beam 20 is wider in the vehicle vertical direction than the longitudinal intermediate portion 20B of the reinforcing beam 20, and the roller arm mounting portion 22A of the door inner panel 22 to which the roller arm that supports the lower roller is mounted. Reinforcement to reinforce.
[0012]
Further, the front-rear direction intermediate portion 20B of the reinforcing beam 20 extends obliquely upward from the front end portion 20A toward the vehicle rear side, and the rear end portion 20C of the reinforcing beam 20 extends to the front-rear direction intermediate portion 20B of the reinforcing beam 20. Compared to the vehicle vertical direction, it is slightly wider. Further, the rear end portion 20C of the reinforcing beam 20 is fixed to a portion 22B above the rear end lower portion of the door inner panel 22 by a predetermined distance.
[0013]
Next, the operation of this embodiment will be described.
[0014]
In the vehicle sliding door structure of the present embodiment, the reinforcing beam 20 having the front end portion 20A for reinforcing the roller arm attaching portion 22A of the door inner panel 22 to which the roller arm that supports the lower roller as the sliding mechanism is attached is provided to the sliding door 12. Also serves as an impact beam. In other words, in the present embodiment, the reinforcing means for reinforcing the roller arm mounting portion 22A of the door inner panel 22 by the reinforcing beam 20 and the impact beam of the sliding door 12 are integrated with each other. The impact at the time of closing can be efficiently absorbed using the length of the reinforcing beam 20 in the vehicle longitudinal direction.
[0015]
As a result, as compared with the configuration in which the reinforcements 102 and 110 as the reinforcing means for supporting the slide mechanism and the impact beam 112 are separated as in the conventional structure shown in FIG. 3, the number of parts is reduced and the weight is reduced. Can be reduced.
[0016]
In the present embodiment, the lower part of the front end of the slide door 12 can be efficiently reinforced by the reinforcing beam 20. As a result, the mounting accuracy of the slide door 12 to the vehicle body 10 is improved. For this reason, standing of the slide door 12 is improved.
[0017]
In the present embodiment, the length L1 of the beam portion of the reinforcing beam 20 can be made shorter than the length L2 of the beam portion having the conventional structure shown in FIG. As a result, it is possible to improve the proof strength against the load input to the beam portion at the time of a side collision. For this reason, the load input to the beam portion at the time of a side collision can be efficiently transmitted to the vehicle body.
[0018]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, the reinforcing beam 20 is not limited to the shape of the above embodiment. Further, the fixed position of the rear end portion 20C of the reinforcing beam 20 may be set above the position shown in FIG.
[0019]
【The invention's effect】
According to the first aspect of the present invention, in the vehicular slide door structure having a slide mechanism at the lower front end of the slide door, an attachment portion reinforcing means for the slide mechanism for reinforcing the attachment portion of the slide mechanism in the slide door, Since the impact beam arranged from the lower part of the front end to the rear part is integrated, it has an excellent effect that the number of parts can be reduced and the weight can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view showing a vehicular sliding door structure according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a vehicle body to which a vehicle sliding door structure according to an embodiment of the present invention is applied, as viewed obliquely from the front.
FIG. 3 is a horizontal sectional view showing a lower portion of a front end of a vehicle sliding door structure according to a conventional example.
FIG. 4 is a side view showing a vehicular sliding door structure according to a conventional example.
[Explanation of symbols]
12 Sliding door 20 Reinforcement beam ( sliding mechanism mounting part reinforcement means , impact beam )
20A Front end portion of the reinforcing beam 20B Middle portion of the reinforcing beam in the front-rear direction 20C Rear end portion of the reinforcing beam 22 Door inner panel 22A Roller arm mounting portion of the door inner panel

Claims (1)

In the vehicle sliding door structure with a sliding mechanism at the lower front end of the sliding door,
A mounting mechanism reinforcing means for a sliding mechanism that reinforces a mounting section of the sliding mechanism in the sliding door, and an impact beam disposed from the lower front end to the rear of the sliding door are integrated . Sliding door structure.

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