JP3887923B2 - Impact energy absorption structure by vehicle interior materials - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes an energy absorber interposed between a panel of a vehicle body structural member and a trim member disposed on the indoor side of the panel, and absorbs impact energy at the time of collision by the energy absorber. The present invention relates to a shock energy absorbing structure that uses a vehicle interior material that relaxes.
[0002]
[Prior art]
Conventionally, as an impact energy absorbing structure using the vehicle interior material of the above-described example, there is a structure described in, for example, Japanese Patent Laid-Open No. 8-119047.
That is, a non-metallic energy absorber in which vertical ribs and horizontal ribs are combined in a lattice shape is provided between a body panel such as a pillar inner panel and a trim member, and the vertical ribs and horizontal ribs of the energy absorber are provided. At least one of them is formed in an inclined shape with respect to the vehicle body panel and the trim member in consideration of buckling.
[0003]
According to this conventional apparatus, there is an advantage that the impact energy at the time of collision can be absorbed and relaxed by the energy absorber and the occupant's head can be particularly well protected by the above-described energy absorber. The above-described energy absorber is a combination of vertical ribs and horizontal ribs in a lattice shape. Therefore, the setting and adjustment of the buckling load of the lattice ribs is complicated in design, and each rib collapses and buckles. In addition to complicating the mode analysis, there are various problems such as not only the molding die used for molding the energy absorber is complicated, but also the occurrence of sink marks during molding.
[0004]
[Problems to be solved by the invention]
The inventions, the energy absorber having a complicated rib portion which is erected in the hotel state from the base surface toward at least one of the panels and trim member of the vehicle body structural member, the rib portion is corrugated In addition, since the rib portion is inclined with respect to the base surface of the panel and the trim member, it is easy to analyze and set the rib portion and buckling mode. Can be done easily and easily, and simplifies the mold structure used to mold the energy absorber, achieves mold design and ease of molding, and secures a stable shock absorbing load. There can, the addition, by extending the rib portion above the longitudinal direction of the energy absorber, there is ensured the rigidity improving the longitudinal direction of the energy absorber, the energy intake by dispersing load The entire body can absorb the impact load, and the energy absorber has a base surface on the trim member side, and the rib portion is erected toward the panel side, so that the rib portion It is an object of the present invention to provide an impact energy absorbing structure by a vehicle interior material that can be reliably tilted and buckled by a hard panel of a vehicle body structural member.
[0005]
In one embodiment of the present invention, by setting the above-described panel of the vehicle body structural member as an inner panel that forms a closed cross-section with the outer panel, the inner member has rigidity and a large impact load at the time of collision. An object of the present invention is to provide an impact energy absorbing structure using a vehicle interior material that can absorb and relax impact energy satisfactorily in a panel portion and can reliably protect an occupant, particularly the head.
[0006]
In one embodiment of the present invention, since the rib portion described above is formed in a zigzag shape, the rib portion has a ridge line portion, so that it can be countered by a simple structure against falling and buckling. It is an object of the present invention to provide an impact energy absorbing structure using a vehicle interior material capable of obtaining a stable impact absorbing load.
[0007]
One embodiment of the present invention is to provide an impact energy absorbing structure by a vehicle interior material that can ensure good impact energy absorption efficiency by forming the above-mentioned energy absorber as a main component of a resin material. And
[0008]
[Means for Solving the Problems]
The impact energy absorbing structure using a vehicle interior material according to the present invention is based on a vehicle interior material including an energy absorber interposed between a panel of a vehicle body structural member and a trim member disposed on the indoor side of the panel. An impact energy absorbing structure , wherein the energy absorber includes a base surface and a plurality of rib portions standing upright from the base surface, and the base surface and the plurality of rib portions are integrally formed. The rib portion extends in the longitudinal direction of the energy absorber, and has a base surface on the trim member side. The rib portion is erected toward the panel side, and a plurality of rib portions are provided at an intermediate portion of the base surface. juxtaposed independently of one another are at equal angles rib portion, and wherein with the rib portion is corrugated, and Turkey, such being inclined the rib portions with respect to the base plane of the panel and trim member And
[0009]
In this embodiment of the invention, the panel of the vehicle body structural member and wherein the inner panel der Turkey to form a closed cross section between the outer panel.
[0010]
According to another embodiment of the present invention, the rib portion and wherein the kite is formed in a zigzag shape.
[0011]
According to another embodiment of the present invention, the energy absorber characterized by the kite is formed of resin material as a main component.
[0012]
In one embodiment of the present invention, the base surface on the trim member side is formed in a flat shape, and the panel side end portion of the rib portion is configured not to be fixed to the panel.
[0013]
[Action and effect of the invention]
According to this inventions, the rib portion of the energy absorber has been made to a plurality of independent erected on-site conditions from the base surface, since not lattice, collapse of the rib portion, buckling mode Analysis and setting can be easily performed. As a result, the energy absorber can be designed, tuned, etc. accurately, easily and easily.
In addition, since the plurality of ribs stand independently in a standing state, it is possible to simplify the mold structure used for molding the energy absorber, which facilitates mold design and molding. There is an effect that can be achieved.
[0014]
Further, since the rib portion is formed in a wave shape, the rib portion has a function to counteract the collapse and buckling with a simple structure, and there is an effect that a stable shock absorbing load can be obtained.
In addition, since the rib part stands upright with respect to the panel of the vehicle structural member and the base surface of the trim member, both the collapse and buckling deformation can be stably obtained, and the stroke until it is completely crushed As a result, there is an effect that a large and stable shock absorbing load can be secured with a simple configuration.
[0015]
Further, since the rib portion described above is provided along the longitudinal direction of the energy absorber, it is possible to improve the rigidity (mechanical strength) in the longitudinal direction of the energy absorber and to apply a load when absorbing the collision energy. There is an effect that the impact load can be absorbed by the entire energy absorber by being dispersed.
[0016]
Furthermore, the energy absorber described above has a base surface and a rib portion. Since this base surface is located on the trim member side and the rib portion is erected toward the panel side, this rib portion is formed on the vehicle body structural member. There is an effect that the hard panel can surely fall down and buckle.
[0017]
According to one embodiment of the present invention, since the panel of the vehicle body structural member described above is set to an inner panel that forms a closed section with the outer panel, the closed section structure has rigidity and impact load at the time of collision. In the inner panel portion that increases the size of the vehicle, the impact energy can be satisfactorily absorbed and relaxed, and the passenger can be reliably protected.
[0018]
According to one embodiment of the invention, since the rib portion of the upper mentioned zigzag shape, the rib portion has a ridge portion, the result for the collapse or buckling countered by a simple structure It is possible to obtain a more stable shock absorbing load.
[0019]
According to one embodiment of the invention, since energy-absorbing bodies above mentioned are those formed of resin material as a main component (a resin material is formed as the base material in other words), good impact energy absorption There is an effect of ensuring the efficiency.
[0020]
【Example】
An embodiment of the present invention will be described in detail with reference to the drawings.
[0021]
The drawing shows an impact energy absorbing structure by a vehicle interior material. In FIG. 1, energy absorbers 2 and 3 (FIG. 3) are provided on the left and right (only one in the drawing) roof side portions of the front side and rear side of the vehicle 1. , See FIG. 4).
[0022]
As shown in FIGS. 2 and 3, the energy absorber 2 on the front side includes a roof side inner panel 6 that forms a closed cross section 5 that extends in the vehicle longitudinal direction between the roof side outer panel 4 and the roof side inner panel 6. It is interposed between the trim member 7 disposed on the indoor side.
[0023]
As shown in FIGS. 2 and 3, the energy absorber 2 described above includes a base surface (base portion) 8 extending in the longitudinal direction of the vehicle body corresponding to the shape of the trim member 7 and the roof side inner panel 6, and the base surface 8. It has two wavy rib portions 9 and 9 erected in the side-by-side state, and the entire energy absorber 2 is integrally formed with a synthetic resin material as a main component (resin material as a base material). .
[0024]
In this embodiment, the energy absorbing member 2 described above is made form by the composite material of the rubber polypropylene (so-called PP), the material of the energy absorbing member 2 is not limited thereto.
Also, the two wavy rib portions 9, 9 erected from the base surface 8 are provided along the longitudinal direction of the energy absorber 2 in the longitudinal direction of the vehicle body and the two wavy rib portions 9. , 9 are erected independently of each other.
[0025]
Further, the two rib portions 9, 9 described above are set in a zigzag shape of a wave shape (rectangular wave shape, sawtooth wave shape, sine wave shape, triangular wave shape, etc.), and are formed to have a plurality of ridge line portions 10 ing.
The energy absorber 2 having the above-described base surface 8 and the two rib portions 9 and 9 is disposed such that the base surface 8 is positioned on the outer surface of the trim member 7 as shown in FIG. The ribs 9 and 9 described above are erected from the side toward the roof side inner panel 6 as a panel of the vehicle body structural member, that is, toward the outside of the vehicle. The side inner panel 6 is erected so as to be inclined with respect to the base surface of the trim member 7 and the base surface 7 a of the trim member 7.
[0026]
In this embodiment, in consideration of formability, each of the rib portions 9, 9 is configured to be inclined downward by an equal predetermined angle θ with respect to a virtual vertical line α orthogonal to the base surface 7a of the trim member 7. are but but it may also be configured to tilt to the upper side with respect to the virtual vertical line alpha. In FIG. 2, reference numeral 11 denotes a roof panel.
[0027]
Since the rear side energy absorber 3 shown in FIG. 4 has the same configuration as the front side energy absorber 2 shown in FIGS. 2 and 3, the same reference numerals are given to the same parts in FIG. A detailed description thereof will be omitted.
[0028]
As described above, according to the impact energy absorbing structure using the vehicle interior material according to the above-described embodiment, the rib portions 9 of the energy absorbers 2 and 3 are provided in a plurality of standing directions from the base surface 8 of the absorbers 2 and 3. Since it is independent and not in a lattice shape, it is possible to easily analyze and set the rib portion 9 and buckling mode. As a result, the energy absorbers 2 and 3 are designed and tuned. There is an effect that can be performed accurately, simply and easily.
In addition, since the plurality of ribs 9 and 9 are independently set up side by side, the mold structure used for molding the energy absorbers 2 and 3 can be simplified, and therefore the mold design is also easy. In addition, there is an effect that the molding can be facilitated.
[0029]
Furthermore, since the rib portions 9 and 9 are formed in a wave shape, the rib portions 9 and 9 have a function of counteracting the collapse and buckling with a simple structure, and there is an effect that a stable shock absorbing load can be obtained.
[0030]
In addition, since the rib portions 9 and 9 are inclined with respect to the vehicle body structural member panel (see the roof side inner panel 6) and the base surface 7a of the trim member 7, both the falling and buckling deformations are stable. Therefore, it is possible to effectively increase the stroke until it is crushed, and as a result, there is an effect that a large and stable shock absorbing load can be secured with a simple configuration.
[0031]
Further, the above-described body structural member panel (see the roof side inner panel 6) is set to an inner panel (see the roof side inner panel 6) that forms a closed section 5 with the outer panel (see the roof side outer panel 4). Therefore, the inner panel portion that has rigidity due to the closed cross-sectional structure and has a large impact load at the time of collision effectively absorbs and relaxes impact energy, and has an effect of reliably protecting the occupant.
[0032]
Further, since the rib portions 9 and 9 are provided along the longitudinal direction of the energy absorbers 2 and 3, the longitudinal rigidity (mechanical strength) of the energy absorbers 2 and 3 can be improved. At the same time, the load can be dispersed when absorbing the collision energy, and the impact load can be absorbed by the energy absorbers 2 and 3 as a whole.
[0033]
In addition, the energy absorbers 2 and 3 described above have the base surface 8 and the rib portions 9 and 9. The base surface 8 is located on the trim member 7 side, and the rib portions 9 and 9 face the panel 6 side. Therefore, there is an effect that the ribs 9 and 9 can be reliably tilted and buckled by a hard panel (see the roof side inner panel 6) of the vehicle body structural member.
[0034]
Further, since the rib portions 9 and 9 are formed in a zigzag shape as shown in FIGS. 3 and 4, the rib portions 9 and 9 have ridge line portions 10. Can be countered by a simple structure and has an effect of securing a more stable shock absorbing load.
[0035]
Furthermore, since the above-mentioned energy absorbers 2 and 3 are formed using a resin material as a main component (in other words, formed using a resin material as a base material), it is possible to ensure good impact energy absorption efficiency. There is an effect that can be done.
[0036]
5 and 6 show another embodiment of the impact energy absorbing structure by the vehicle interior material, and the energy absorber 2 on the front side shown in FIG. 5 has a triangular wave shape having no ridge portion with respect to the base surface 8. Two rib portions 9, 9 are integrally erected, and the rear energy absorber 3 shown in FIG. 6 has two triangular-wave shapes that do not have a ridge portion with respect to the base surface 8. The rib portions 9, 9 are integrally erected, and only the wave shape of the rib portion 9 is different from that of the previous embodiment, and the other points are the same as those of the previous embodiment. ing.
[0037]
Even if the wave shapes of the rib portions 9 and 9 that are erected with respect to the base surface 8 are configured as shown in FIGS. 5 and 6, the same effects and advantages as in the previous embodiment are obtained. 5 and 6, the same parts as those in the previous figures are denoted by the same reference numerals, and detailed description thereof is omitted.
[0038]
In the correspondence between the configuration of the present invention and the above-described embodiment,
The panel of the vehicle body structural member of the present invention corresponds to the roof side inner panel 6 of the embodiment,
Similarly,
The outer panel corresponds to the roof side outer panel 4,
The inner panel that forms a closed cross section with the outer panel corresponds to the roof side inner panel 6,
The wave shape of the rib part corresponds to a zigzag shape and a triangular wave shape with a curved vertex,
The present invention is not limited to the configuration of the above-described embodiment.
[0039]
For example, the interposition position of the energy absorbers 2 and 3 is not limited to the roof side portion illustrated in the embodiment, and may be a front pillar portion or a center pillar portion, and the wave shape of the rib portion 9 is In addition to the zigzag shape and the triangular wave shape disclosed in the embodiments, a rectangular wave shape, a sawtooth wave shape, a sine wave shape, and a meandering wave shape may be used. Further, the constituent materials of the energy absorbers 2 and 3 may be entirely formed of a synthetic resin such as polypropylene, or a predetermined amount of rubber material or the like is added to the resin material with the resin material as a main component. It may be a composite material.
[Brief description of the drawings]
FIG. 1 is a side view showing an example of an arrangement location of an impact energy absorbing structure using a vehicle interior material according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a side view showing an energy absorber on the front side.
FIG. 4 is a side view showing a rear energy absorber.
FIG. 5 is a side view showing another embodiment of the energy absorber on the front side.
FIG. 6 is a side view showing another embodiment of the energy absorber on the rear side.
[Explanation of symbols]
2, 3 ... Energy absorber 4 ... Roof side outer panel (outer panel)
5 ... Closed section 6 ... Roof side inner panel (panel)
7 ... Trim member 8 ... Base surface 9 ... Rib part

Claims (5)

An impact energy absorbing structure by a vehicle interior material provided with an energy absorber interposed between a panel of a vehicle body structural member and a trim member disposed on the indoor side of the panel,
The energy absorber includes a base surface and a plurality of rib portions that are erected from the base surface.
The base surface and the plurality of rib portions are integrally molded,
The rib portion extends in the longitudinal direction of the energy absorber,
The trim member side has a base surface, and the rib portion is erected toward the panel side,
A plurality of rib portions are provided independently of each other at an equal angle at the intermediate portion of the base surface,
And the said rib part is formed in a wave shape, The impact energy absorption structure by the vehicle interior material by which this rib part inclines with respect to the base surface of a panel and a trim member. 2. The impact energy absorbing structure according to claim 1, wherein the panel of the vehicle body structural member is an inner panel that forms a closed cross section with the outer panel. The rib part was formed in a zigzag shape
The impact energy absorption structure by the vehicle interior material of Claim 1 or 2. The energy absorber is formed mainly of a resin material.
The impact energy absorption structure by the vehicle interior material of any one of Claims 1-3. The base surface on the trim member side is formed in a flat shape, and the panel side end portion of the rib portion is configured to be unfixed with the panel.
The impact energy absorption structure by the vehicle interior material of any one of Claims 1-4.

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