JPH0727918U - Side-resistant structure for vehicle doors - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent a large amount of energy from being transmitted to an occupant during a side collision. [Structure] Inside the door trim 4 facing the bulge 3a,
An energy absorbing plate 10 is provided so as to project. The energy absorbing plate 10 has two protrusion heights, that is, a high protrusion 11 having a height L1 that protrudes to the vicinity of the inner panel 3 and a height lower than the high protrusion 11 by L3. And a low protrusion 12 of L2. At the time of a side collision, the high protrusion 11 and the low protrusion 12 are deformed in stages, and the energy is absorbed in two stages.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a side-collision resistant structure for a vehicle door, which is effective in protecting an occupant from a collision accident from the side of the vehicle.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, the safety of passengers has been emphasized in automobiles, and various safety measures have been taken. One of them is safety measures against collisions from the side of the vehicle, so-called side collision accidents. Figs. 4 and 5 show an example of the concrete structure, and Fig. 5 shows the side view of the door from the inside of the vehicle. The figure is shown and FIG. 4 is the BB partial sectional view. Reference numeral 21 is an outer panel, 22 is an inner panel, and a part thereof has a swelling portion 22a having a box-shaped cross section. A door trim 23 is attached to the inner side of the inner panel 22, and an energy absorbing plate 24 for absorbing energy during a side collision is fixed to the door trim 23. The energy absorbing plate 24 has a U-shaped vertical cross section. Further, the energy absorbing plate 24 faces the bulging portion 22a of the inner panel 22 with a slight gap therebetween.

By the way, at the time of a side collision, first, the outer panel 21 is deformed to the inside of the vehicle, and subsequently, the inner panel 22 is deformed to the inside of the vehicle. Following the deformation of the inner panel 22, the energy absorption plate 24 is deformed. The energy for such deformation absorbs the energy of the collision due to the side collision, and the impact on the occupant is alleviated.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the energy absorption plate 24 is formed of a single layer. For this reason, in the single-layer energy absorbing plate, once the deformation due to the collision starts, the deformation proceeds relatively easily thereafter. In other words, the energy absorption after the start of the initial deformation cannot be expected sufficiently. Therefore, there is a problem that a large amount of collision energy is transmitted to the occupant. In this case, especially the initial energy of the collision transmitted to the occupant becomes large.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a side-collision-resistant structure for a vehicle door that suitably prevents a large energy from being transmitted to an occupant during a side collision. To aim.

[0006]

[Means for Solving the Problems]

 The present invention made to solve the above-mentioned problems has a plurality of energy absorbing members which are arranged inside a door of a vehicle and project outward from the vehicle. The energy absorbing members have a plurality of projecting heights. Characterize.

[0007]

[Action]

 According to the above configuration, at the time of a side collision, the initial energy of the collision transmitted from the outside of the door to the energy absorbing member is the energy absorption member having a high protrusion height among the energy absorbing members having a plurality of protrusion heights. It is absorbed by the deformation of the member. Next, after the initial energy is absorbed and the door is further deformed, the secondary energy is absorbed by the deformation of the energy absorbing member having the next protruding height. In this way, in the event of a side collision, the energy of several orders is absorbed by the stepwise deformation of the energy absorbing members having a plurality of heights. Therefore, the large collision energy applied by the side collision is absorbed as the plural kinds of energy absorbing members having different projecting heights are sequentially deformed.

[0008]

[Effect of device]

 As described above, according to the present invention, in the event of a side collision, the energy of several orders is absorbed by the stepwise deformation of the plurality of energy absorbing members, so that the side collision energy transmitted to the occupant is reduced and It has an excellent effect that it can be protected from the impact of a collision.

[0009]

Embodiments Embodiments embodying the present invention will be described below in detail with reference to the drawings. <First Embodiment> FIG. 2 shows a side surface of a vehicle door as viewed from the inside of the vehicle, and FIG. 1 is a sectional view taken along the line AA. The door 1 is composed of outer and inner panels 2 and 3, and a door glass 7 that can be moved up and down between the panels, and the inner panel 3 is equipped with a door trim 4 as an inner sticker. Has been done. The upper end of the outer panel 2 is folded back toward the inside of the vehicle, and a door molding 5 with a lip 6a is attached to the upper end edge. On the other hand, a seal piece 6c having a lip 6b is also attached to the upper end portion of the door trim 4, and the door glass 7 is tightly sandwiched from inside and outside together with the lip 6a on the outer panel 2 side. The inner panel 3 is formed by stacking two plates from the inside and outside directions of the vehicle, and a bulging portion 3a having a box-shaped cross section is provided near the upper end thereof. The bulge 3a is formed over a width range slightly shorter than the entire width of the door 1 as in the conventional case.

On the other hand, an energy absorbing plate 10 is fixed to the inside of the door trim 4 at a position facing the bulging portion 3a. The energy absorbing plate 10 is configured by combining protrusions having two types of protrusion heights. That is, the energy absorbing plate 10 has a high protrusion 11 having a height L1 protruding to the vicinity of the inner panel 3 and a low protrusion 12 having a height L2 which is lower than the high protrusion 11 by L3. However, two of them are alternately arranged at a predetermined interval. These high protrusions 11 and low protrusions 12 are arranged in a range facing the above-mentioned bulging portion 3a, that is, as shown in FIG. 2, both are slightly shorter than the entire width of the door along the longitudinal direction of the door. It is provided over the range. In the figure, the energy absorption plate 10 is formed by continuously bending one sheet metal, but the high protrusion 11 and the low protrusion 12 are separately formed and welded. You may make it adhere | attach by.

Next, the operation at the time of a side collision will be described. At the time of a side collision, the energy of the collision is first applied to the outer panel 2, so that the outer panel 2 is largely deformed toward the inside of the vehicle. When the outer panel 2 is deformed to the position of the inner panel 3, the inner panel 3 starts to be deformed. Here, if the bulging portion 3a of the inner panel 3 is deformed, the impact of the side collision is primarily absorbed. When the deformation further progresses and the two high protrusions 11 of the energy absorbing plate 10 are pushed by the bulging portion 3a, they are also deformed, and the energy of collision is further absorbed through these deformations.

Next, when the deformation of the high protrusions 11 reaches the low protrusions 12, the low protrusions 12 as well as the high protrusions 11 also start to deform toward the inside of the vehicle. Thus, the deformation of the high protrusions 11 and the low protrusions 12 absorbs the collision energy in two stages. Therefore, most of the energy of the collision is absorbed by the two-stage deformation of the energy absorbing plate 10, so that the impact on the occupant is effectively mitigated.

As described above, according to this example, the energy of the side impact is divided into two parts and absorbed by the two-stage deformation of the energy absorbing plates 10 having different heights. The collision energy can be reduced, and the occupant can be protected from the side impact.

Although the energy absorbing plate 10 is provided between the door trim 4 and the inner panel 3 in this example, for example, the energy absorbing plate 10 is provided between the inner panel 3 and the outer panel 2. You can also do it. In this case, the arrangement may be such that it does not interfere with the lifting and lowering of the door glass 7. Furthermore, for example, the energy absorbing plate 10 can be arranged inside the bulging portion 3a of the inner panel 3. In addition, in this example, the height of the energy absorbing plate 10 is set to two types, but, for example, a configuration in which protrusions having various heights are provided may be used.

Second Embodiment Further, as shown in FIG. 3, a structure is provided in which a high protrusion 14 is provided with a low protrusion 15 at a position facing the bulge 3 a of the inner panel 3 of the door trim 4. It can also be configured to be placed in. Even in this case, the same effect as that of the above-described first embodiment is obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a door structure according to a first embodiment.

FIG. 2 is a side view of the door of the first embodiment seen from the inside of the vehicle.

FIG. 3 is a partial sectional view of a door structure according to a second embodiment.

FIG. 4 is a sectional view of the prior art.

FIG. 5: Side view of prior art

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Door 2 ... Outer panel 3 ... Inner panel 4 ... Door trim 10 ... Energy absorption plate 11 ... High protrusion 12 ... Low protrusion

Claims (1)

[Scope of utility model registration request] 1. A vehicle door having a plurality of energy absorbing members arranged inside a vehicle door and projecting outward from the vehicle, the energy absorbing members having a plurality of protrusion heights. Side impact structure.