JP3489495B2 - Impact energy absorbing structure on the upper part of the vehicle - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
Regarding impact energy absorbing structures,
Vehicle structural members such as
Pillars located at intervals in the interior of the vehicle
With interior materials such as nish and roof lining
At the upper part of the vehicle body, place an energy absorbing material
And a structure for absorbing impact energy. 2. Description of the Related Art Structural members of a vehicle body, particularly of a car,
Place the energy absorbing material in the space between the interior material and the interior
When an impact load from the material to the structural member is applied,
Impact energy of impact load by deforming energy absorbing material
Is absorbed. Usually, it is classified as the energy absorbing material.
Cross section hats made of ribs, urethane pads, and thin steel plates
What is folded so as to have a shape is used,
Using a metal pipe made by extruding a metal material
(Japanese Patent Application No. 9-176594: JP-A-11-5503), gold
The core of the genus foil and the front and back of this core
Consisting of a sheet of material other than metal,
The front and back sheets are continuously deformed in the axial direction into irregularities
Use the so-called hybrid pipe formed
(JP-A-10-29482). [0003] Metal pipes are extruded,
Hybrid pipes must be deformed after molding
This makes it easy to obtain a desired cross-sectional shape.
Wear. Furthermore, changing the thickness of the metal pipe,
From the outermost surface of the convex part to the innermost surface of the concave part
The thickness in the radial direction up to the part, the so-called apparent plate thickness has been changed
Change the pitch between adjacent convex portions (between concave portions).
Adjust the energy characteristics to be absorbed
can do. Thus, the extruded gold
For hollow materials such as metal pipes and hybrid pipes,
It has excellent properties as lugi absorber. [0004] Incidentally, the structure of the vehicle body
The members are strong and meaningful, depending on where they are installed.
It is formed into a three-dimensional bent shape to satisfy the design requirements
Therefore, make sure that the energy absorbing material
Placement can be difficult. On the other hand, the interior material is a design
Is formed as a whole with the primary focus on meeting
Therefore, the need to match the local shape of the structural member is
Rather less. As a result, metal pipes, hybrid
Substantially constant interruptions such as pipes and other hollow pipes
Energy absorbing material whose surface shape is continuous in the longitudinal direction is a structural member
When placed within the space between the
Between the structural member and the energy absorbing material in the
Clearance of different size between the energy absorbing material and the interior material
May occur. [0005] The energy absorbing material is the impact load of the impact body.
Deformation starts from the beginning of the impact, and the impact body is displaced by a predetermined amount.
Is able to absorb the intended amount of energy.
Energy absorbing material and interior material or structure
If there is a gap between the members, this gap is filled
The energy absorber does not deform until it is removed. On the other hand, energy
A predetermined amount of displacement of the absorber causes the impact body to change the energy absorber.
It is a displacement that is acceptable to shape and move, and is substantially
It is fixed. Therefore, energy absorbing materials and interior materials or
If there is a gap with the structural member,
The impact body absorbs energy by a displacement equivalent to the size of
Since the material moves without deforming it, it can withstand impact loads.
The actual amount of displacement of the energy absorber due to
Lugi absorption is reduced. Therefore, different sizes
If a gap exists in the longitudinal direction of the structural member, the impact load
Sources where the amount of energy absorption fluctuates greatly depending on the part to be added
Cause. According to the present invention, the gaps having different sizes are formed in the structural portion.
When present in the longitudinal direction of the material, the intended energy absorption
Provide an impact energy absorbing structure at the upper part of the vehicle body that can be achieved
You. Means for Solving the Problems, Functions and Effects of the Invention
Is a structural member of a vehicle body extending in a longitudinal direction, and the structural member
An interior material disposed at an interval inside the
And extending longitudinally along the structural member.
Impact energy in the upper part of the vehicle body with the energy absorbing material
The structure that absorbs The energy absorbing material is metal
Foil core material and this core material were superimposed on both sides
The core material and the sheet
The sheet is formed by continuously deforming the sheet in the axial direction into an uneven shape.
Hybrid pipe. This hybrid pipe
Is that the outer peripheral length of the cross section orthogonal to the axis is
Substantially constant, and the cross-sectional shape gradually varies in the axial direction.
And twisted about the axis.
You. [0008] Between the hybrid pipe and the structural member,
Clearance between hybrid pipe and interior material
So that the cross-sectional shape is changed in the axial direction so that
Place the different hybrid pipes in place
When placed, between the hybrid pipe and the structural member, and
The clearance between the hybrid pipe and the interior material is substantially
not exist. An impact load is applied from the interior material to the structural member.
When the hybrid pipe is initially subjected to an impact load
Compressive deformation starts and energy is absorbed, so efficiency
Can absorb impact energy well. [0010] A plurality of hybrids each having a different cross-sectional shape
The cross section of each individual pipe is constant
Combine multiple hybrid pipes side by side in the axial direction
Arrange in the longitudinal direction of the structural member to absorb impact energy
, The adjacent hybrid pipe phase
The existence of a gap between each other and the different cross-sectional shape
Therefore, the energy absorption characteristics in the longitudinal direction of the structural member
It becomes discontinuous. In contrast, according to the present invention, the hive
When the lid pipe is continuous,
Because sudden changes can be suppressed, continuous energy
Lugi absorption characteristics can be obtained. This is the structural member
Impact energy absorption characteristics at any part in the longitudinal direction
Is not far from the impact energy absorption characteristics of other parts
It is approximated along the longitudinal direction of the structural member
Impact energy absorption characteristics can be obtained. [0011] Cross section orthogonal to the axis of the hybrid pipe
To keep the outer circumference substantially constant in the axial direction.
Since the cross-sectional shape gradually changes,
In the form of a cylinder with a circular cross section
Forming the formed hybrid pipe
The cross-sectional shape is changed by
Since it is possible to obtain an hybrid pipe, the cross-sectional shape
Easy to make hybrid pipes with gradually changing shapes
Can be. [0012] The hybrid pipe should be
When a load is applied from the direction, it extends in the axial direction,
Instead, the energy absorption characteristics of load versus displacement change. When
Rollers twist the hybrid pipe around its axis
Thus, the internal resistance or viscous resistance to axial elongation
Because the resistance is large, the energy of the sudden rise of the load is
Absorption characteristics can be obtained. As a result,
Can absorb more impact energy. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An impact energy absorbing structure according to the present invention
Other shock energy absorbing structures shown for construction
Referring to FIGS. 1 and 2 in a plane state and FIG. 3 schematically.
A vehicle body structural member 20 extending in the longitudinal direction A;
And an interior material 22 arranged at an interval inside the material 20.
Energy absorbing material 2
4 is arranged to absorb impact energy. The structural member 20 includes an inner panel 26 and an outer panel 26.
Panel 28 and a reinforcing panel 30.
Overlap and join the flanges to form a closed cross-section structure
Front pillar, and the interior material 22 is a pillar garniture.
Shu. The energy absorbing member 24 is formed hollow.
And is disposed within the spacing 32 and extends longitudinally along the structural member 20.
It extends in the direction A. Inner panel 26 of structural member 20
The distance 32 between the interior material 24 and the interior material 24 is compared with FIG. 1 and FIG.
As can be seen, there is a difference in the longitudinal direction of the structural member 20.
Although the size is changed, the energy absorbing material 24
A virtual plane orthogonal to the longitudinal direction of the material 20, that is, FIGS.
The cross-sectional shape on the paper surface of No. 2 is substantially constant in the longitudinal direction
It is formed so as to be continuous in a shape. That is, the energy
The absorbent 24 has a substantially constant shape in the longitudinal direction.
In the direction in which the impact load is applied within the interval 32
It is formed to the largest dimension that can enter the interval. As shown in FIG. 3, the front pillar 20
At the upper end of the roof, the roof
Contact with the rail 50 and the header 36 extending in the width direction of the vehicle body
Three-dimensional, that is, two-dimensional as shown
Bends in the direction perpendicular to the plane of the drawing. So
As a result, the front pillar 20 and the roof side rail 50
And the connecting portion 34 where the header 36 is connected to each other,
As shown in FIG. 1, the inner panel of the front pillar 20
26 and a pillar garnish 22 arranged inside this
Are the narrowest. Closest
Energy absorbing material 2 so that it has a cross-sectional shape that matches the location
4 in a substantially constant shape over its entire length.
Therefore, the energy absorbing material 24 is provided with
The largest substance that can enter the interval in the direction in which
It has a constant shape. At the site shown in FIG.
The energy absorbing material 24 is composed of the interior material 22 and the inner panel.
26. The energy absorbing member 24 has one of the intervals 32.
Skewed toward the rear, that is,
Windshield glass 38 on the front side of top pillar 20
There is a pillar near the windshield glass 38.
Impact from garnish 22 to front pillar 20
This is because the load is not easily applied. Thus, the energy
Absorber 24 may be added where it is located
Considering the direction of impact load
Select the shape. The energy absorbing member 24 is formed as described above.
Then, as shown in FIG.
Of the energy absorbing material 24 and the pillar garnish 22
There will be a gap 40 between the gaps.
The gap 40 is filled by arranging a spacer material 42 in the space.
The spacer material 42 itself can absorb energy.
Even if it cannot absorb energy
Good. The spacer material 42 extends along its length along the structural member 20.
It extends in the hand direction and the cross-sectional shape is
It is getting smaller. However, the spacer material 42
You don't have to fill everything. Multiple in the longitudinal direction
Spacer materials 42 are adjacent to each other with an interval
Even so, the space between the spacer materials hits the interior material 22
When it is smaller than the size of the rounded impact body,
The presence of spacing between spacers in any direction is not a problem
No. The spacer member 42 can absorb energy.
In this case, the spacer material 42 faces the energy absorbing material 24.
Resin ribs integrally molded on the back of the interior material 22
Can be. That is, the interior material 22 is made of ABS resin.
The interior material 22 is made by injection molding a hard resin.
When molding the one or more vertical ribs and the plurality of horizontal ribs
By forming resin ribs at appropriate intervals,
This eliminates the need to separately form the spacer material 42.
Wear. In this case, the thickness and height of the vertical and horizontal ribs
The energy of the load versus displacement of the energy absorbing material 24 is appropriately selected.
Adjust the lugi absorption characteristics. For example, vertical ribs
And the height of the side ribs are set to about 1-2 mm, and an impact load is applied.
First, the energy absorbing material 24 is compressed and deformed,
After the lugi absorbent 24 has been sufficiently compressed and deformed, the resin ribs
If it is determined to bend or shear, energy absorbing material
In addition to the energy absorption by the
Nerium absorption can be obtained. The spacer material 42 does not absorb energy
, The so-called bottom bottom
The displacement of the energy absorbing material 24 is determined so that no elephant occurs.
Confuse. That is, from the interior material 22 through the spacer material 42
When an impact load is applied to the energy absorbing material 24, the energy
Although the absorbing material 24 is compressed and deformed, the energy absorbing material 24 is not sufficiently deformed.
The required energy absorption is completed when it is compressed and deformed in minutes
It is preferable to determine the amount of displacement as described above. In the above embodiment, the energy absorbing material 24 and the inner
The gap 40 generated between the material 22 and the spacer material 42
Therefore, it is buried, but the energy absorbing material 24 is arranged.
Depending on the location, the energy absorbing material 24 and the structural member 20
Since there may be a gap between
Check the clearance between the energy absorbing material 24 and the structural member 20.
Fill with wood. In addition, the energy absorbing material 24
And the energy absorbing member 24
Both the gap between the interior material 22 and the interior material are filled with a spacer material.
You can also. In this case, the larger of the two clearances
The effect can be obtained only by filling the gap of the
It is. The energy absorption characteristic of load F versus displacement S is shown.
Referring to FIG. 4, an impact load is applied to the portion shown in FIG.
The energy absorbing material 24
The reaction force load is shown by the solid line B since
You. When an impact load is applied to the part shown in FIG.
Material 42 and interior material 22 or spacer material 42 and energy
Influence of slight clearance remaining between the absorber 24
Therefore, the energy absorbing material 24 only slightly starts to be compressed and deformed.
, The reaction force load is as shown by the dashed line C. So
Then, after the energy absorbing material 24 is sufficiently compressed and deformed,
Because the resin rib as the pacer material is sheared or buckled,
It decreases like 1. In contrast, the parts shown in FIG.
If there is no spacer material in the
Until the interior material 22 contacts the energy absorbing material 24.
The force load is as low as D1. Interior material 22 absorbs energy
The energy absorbing material 24 comes into contact with the material 24 and starts compressive deformation.
In other words, the reaction force load becomes D2, and finally the bottoming phenomenon
D3 occurs. The bottoming out phenomenon is caused by energy
This is due to insufficient giant absorption. FIGS. 5 to 7 in a cross-sectional state and schematic views
The impact energy absorbing structure shown in FIG.
Between the structural member 50 of the vehicle body that extends and the inside of the structural member 50
On the upper part of the vehicle body having an interior material 52 arranged at a distance
The energy absorbing material 54 is arranged in the space
It absorbs energy. The structural member 50 includes an inner panel 56 and an outer panel 56.
Panel 58 and a reinforcing panel 60, and each panel
Overlap and join the flanges to form a closed cross-section structure
Roof side rail, and the interior material 52 is a roof fly.
It is ning. The energy absorbing material 54 is formed hollow.
And is disposed within the interval 62 and extends longitudinally along the structural member 50.
It extends in the direction A '. Inner panel 5 of structural member 50
6 and the interior material 54 are shown in FIGS.
As can be seen from the comparison, the longitudinal direction of the structural member 50
Energy absorbing material 54 has a different size.
A virtual plane perpendicular to the longitudinal direction of the structural member 50, that is, FIG.
The cross-sectional shape of the chair shown in FIG.
It is formed so as to be continuous in a constant shape. As shown in FIG. 8, the roof side rail 5
Reference numeral 0 denotes a front end of the header 3, which extends in the width direction of the vehicle body.
6 and the front pillar 20 standing up at an angle
And bends convexly toward the rear edge,
It also bends in a direction perpendicular to the direction, and is three-dimensionally bent.
As a result, the roof side rail 50 and the front pillar 2
0 and the header 36 are connected to each other at the connecting portion 34
As shown in FIG. 5, the inside of the roof side rail 50 is
Napanel 56 and roof lining placed inside
52 is the narrowest. Interval
Energy absorption so that the
The collecting material 54 is formed in a substantially constant shape over the entire length.
As a result, the cross section of the energy absorbing material
Shape. The energy absorbing member 54 is formed as described above.
Then, as shown in FIG.
Between the energy absorbing material 54 and the roof lining 52
Gap 64, the energy absorbing material 54 and the roof
There is a gap 66 between the inner panel 56 of the drain 50 and
Will happen. Further, as shown in FIG.
Inner panel of gear absorber 54 and roof side rail 50
A gap 68 is formed between the gap and the gap 56. In the present invention
Spacers 70, 64 are provided in gaps 64, 66, 68, respectively.
72 and 74 are arranged to fill the gaps 64, 66 and 68
ing. The spacer materials 70, 72, 74 are themselves
Even if it can absorb energy, it can also absorb energy
It may not be possible. The spacer material 70 has a structure
Extends longitudinally rearward along the material 50 and has a cross-section
The shape gradually decreases toward the rear. On the other hand,
The pacer material 72 extends toward the spacer material 74 and has a cross-sectional shape.
Is almost the same as or slightly larger than the spacer material 72.
ing. Spacer material 70 must fill all gaps
No, and one spacer material 72 and one spacer material 74
Even if the spacer material is formed continuously, it is formed separately
May be done. Multiple spacer materials in the longitudinal direction
Are adjacent to each other at intervals,
In addition, a circle in which the space between the spacer materials hits the interior material 52
When it is smaller than the size of the impact body
The presence of the spacing between the facing spacer materials does not matter. The spacer members 70, 72, 74 absorb energy.
If it can be accommodated, the spacer material 70 is the same as in the previous embodiment.
At the back of the interior material 52 facing the energy absorbing material 54
It may be an integrally molded resin rib. further,
Spacer members 70, 72, 74 are reserved for energy absorbing material 54.
Energy-absorbing resin ribs or
It can be a foam. Referring to FIG. 9 in a perspective view, the energy absorption
A resin rib 80 is fitted around the outer periphery of the collecting material 54. Tree
The grease rib 80 includes one vertical rib 82, a plurality of horizontal ribs 84,
And formed separately from the energy absorbing material 54
Later, it is integrated with the energy absorbing material 54 to be integrated.
You. Do you know the size of the gaps 64, 66, 68 at the design stage?
The vertical ribs 82 and
And the height h of the side ribs 84,
Forming the resin rib 80 with the thickness d determined so that it can be accommodated
You. Instead of resin rib 80, such as urethane foam
Foam can be attached to energy absorbing material 54
You. The energy absorption characteristic of load F versus displacement S is shown.
Referring to FIG. 10, an impact load is applied to the portion shown in FIG.
When impacted, an impact load was applied to the energy absorbing material 54.
Since compression deformation starts from the beginning, the reaction force load becomes the solid line B.
You. When an impact load is applied to the part shown in FIG.
Material 70 and interior material 52 or spacer material 72 and structural member
Due to the slight gap left between
Slight delay in starting compression deformation of lugi absorbent 54
Therefore, the reaction force load is as shown by the one-dot chain line C. And d
After the energy absorbing material 54 is sufficiently compressed and deformed, the spacer material
Because the resin rib is sheared or buckled,
To decrease. This is because an impact load is applied to the part shown in FIG.
It is substantially the same when it changes. In contrast, FIG.
When no spacer material is present in the portion shown in FIG.
The interior material 52 contacts the energy absorbing material 54 as shown in FIG.
Until the reaction force load is as low as E1. The interior material 52 is
Contact with the energy absorbing material 54 and the energy absorbing material 54 is compressed
When the deformation starts, the reaction force load becomes E2, and finally
The bottoming phenomenon E3 occurs. Energy absorber 54 is gold
In the case of a metal pipe, the energy absorbing material 54 is compressed.
At this time, the load of B, C, and E rises.
The hollow energy absorbing material and spacer material at the
When made of resin, it has a gentle rise like F
Become. The energy absorption characteristics of load F versus displacement S are shown.
Referring to FIG. 11, an impact load was applied to the portion of FIG.
When the spacers 70 and 72 are present, the dashed line C
When there is no spacer material, a broken line E is obtained.
The amount of energy absorption corresponding to the hatched area G is
It can be obtained by arranging the spacer members 70 and 72.
As a result, the energy absorption efficiency can be improved.
Further, by disposing the spacer members 70 and 72,
The peak value can be reduced by the difference P between the peak values of the force load.
it can. The above-mentioned energy absorbing member 24 is in a perspective state.
As shown in FIG. 12, the extruded metal pipe and
can do. The metal pipe has a predetermined hollow cross section 90
Aluminum or a predetermined shape 92
Can be made of magnesium or its alloys. Energy
Lugi absorber 54 is also a metal pipe extruded similarly
It can be. Further, the energy absorbing members 24 and 54 are inclined
As shown in FIG. 13 in a visual state and FIG. 14 in a cross-sectional state,
The hybrid pipe 100 can be used. Hive
The lid pipe 100 is made of a metal core 102 and this core
Metal fixed on top and bottom of 102 respectively
Sheet 104 of a material other than
The concave portion 106 and the convex portion 1 are continuously connected in the axial direction.
08 and is formed by deformation. Core material 10
2 is hard aluminum foil, stainless steel foil or magnesi
Sheet 104 can be selected from
Paper or resin. The core material 102 has a thickness of 0.05 mm or more.
And the width is 30 mm or more, and the sheet 104 has a thickness of 0.2 mm or less.
The width above should be 30mm or more. In FIG. 13, irregularities are deformed.
It has a spiral shape. Instead, one recess 106
It is continuous in the circumferential direction, and is adjacent to this one concave portion 106.
Two independent projections 108 are continuous in the circumferential direction,
It can be so-called wavy. The cross-sectional shape perpendicular to the axis is substantially in the axial direction.
Energy absorber formed so as to be continuously connected in a uniform shape
And a space arranged at a predetermined position of the energy absorbing material.
An impact energy absorbing component can be made from the material.
That is, the energy absorbing member 24 shown in FIGS.
By means of the spacer material 42, an impact having the characteristics of B and C in FIG.
A shock energy absorbing component can be made. Further, FIG.
Or the energy absorbing material 54 and the spacer material 7 shown in FIG.
0, 72 and 74 have the characteristics of B and C in FIG.
Impact energy absorbing components can be made. Energy absorption
The collecting material is an extruded metal pipe of FIG. 12, or
The hybrid pipe of FIG. 13 can be obtained. FIGS. 15 to 19 in a perspective view show the longitudinal direction.
Between the structural member of the car body that extends in the direction
An interior material arranged at a distance, and an
Energy absorption that extends longitudinally along the structural member.
And a shock absorber at the upper part of the vehicle body according to the present invention.
5 shows an embodiment of a structure for absorbing energy. In this embodiment, the energy absorbing material is a metal
Foil core material and this core material were superimposed on both sides
The core material and the sheet
The sheet is formed by continuously deforming the sheet in the axial direction into an uneven shape.
Also, from a hybrid pipe as shown in FIG. 13 and FIG.
However, this hybrid pipe is cut perpendicular to the axis.
The peripheral length of the surface is substantially constant in the axial direction,
Shape so that the cross-sectional shape gradually changes in the axial direction.
Has been established. FIG. 15 shows the energy for the front pillar 120.
It is a gear absorber 122. Energy absorbing material 122
Pentagon of A1, B1, C1, D1, E1 on the end face of
Was a cross-sectional shape of A2,
It becomes a pentagon close to the rectangle of B2, C2, D2, E2,
A3, B3, C3, D3, E
3, F1 hexagon, A4, B on the upper end face
4, C4, D4, E4, and F2 hexagons. FIG. 16 shows the energy for the center pillar 124.
Absorbing material 126. The energy absorbing material 126
A1, B1, C1, D1, E1, F1, G at the end face
What was a substantially U-shaped heptagon in 1
Even though it keeps a heptagon, the dimensions of each side are different,
A2, B2, C2, D2, E2, F at the upper end face
2, the shape of each side is a substantially U-shaped heptagon of G2
Are different. FIG. 17 shows the energy for the quarter pillar 128.
It is a gear absorber 130. Energy absorbing material 130
Pentagon of A1, B1, C1, D1, E1 on the end face of
A, B2, C2, D
The pentagon of 2,2 is kept, but the dimensions of each side are different
A3, B3, D3, E3 on the lower end face
It is square. FIG. 18 is a side view of the roof side rail 132.
It is an energy absorbing material 134. The energy absorbing material 134 is
A1, B1, C1, D1, E1, F at the front end face
The hexagonal shape of A1, A2,
It becomes a pentagon of B2, D2, E2, F2, and on the rear end face
A3, B3, D3, and E3. The energy absorption shown in FIGS.
Materials 122, 126, 130, 134 are orthogonal to the axis
The perimeter of the cross section is kept substantially constant,
Work so that the cross-sectional shape gradually changes in the axial direction.
Have been. This is a cylindrical hybrid pipe
After making, the square tubular hybrid pipe of FIG.
And then forming to cut in the axial direction.
The surface shape is gradually changed. A hive having a different sectional shape in the axial direction.
The lid pipe 140 is in a perspective state as shown in FIG.
It has a configuration that is twisted about an axis. The hybrid shown
The pipe 140 has a twist pitch P. This screw
The pitch P is the torsion angle (the other end face is
Hybrid pipe with constant angle)
Is the length between the two end faces of the
Is used. By changing the twist pitch P
Energy absorption characteristics can be adjusted. Of FIG.
Referring to the energy absorption characteristics of load F versus displacement S,
144 without twist compared to 142 without
In 146 and 148, the load rises sharply.
Here, the length of the twist pitch P is 144, 146, 1
48, in order. Furthermore, the twist pitch P
Is shorter, that is, torsion per unit length
The larger the amount, the faster the load rises,
It can be seen that it has become smaller. FIG. 22 is a sectional view showing details of FIG.
And FIG. 23 in a perspective view, the seat belt
Adjuster Support 152 of Shoulder Belt 150
The rail 154 that supports the arm so that it can move up and down
A center pillar 156 attached to a rearward intermediate portion,
Pins spaced apart inside the center pillar 156
Garnish 158 and the
Energy absorption extending vertically along the center pillar 156
Shock energy in the upper part of the vehicle body having
The absorbing structure is shown. Adjuster support 152
And the rail 154 are known per se and are not shown.
While pressing the adjuster button, adjuster support 15
2 is moved up and down, and the shoulder belt 150 is properly
Can be brought to any position. Also, energy absorbing material
160 is substantially the same as the energy absorbing material 126 of FIG.
Shape. The center pillar 156 is connected to the outer panel 16.
2 and inner panel 164, each franc
Joints so that the horizontal cross section has a closed structure
Is formed. The energy absorbing material 160 is a hybrid pie
And a pair of hollow energy absorbing portions 166, 167
Having. A pair of hollow energy absorbing portions 166 and 167
Are connected to each other and are located before and after the rail 154
Are located in The energy absorbing material 160 is shown in FIG.
It has substantially the same form as the energy absorbing material 126 shown.
You. A pair of energy absorbing parts 166 and 167
Connected via connecting portions 168 and 169 to be formed.
The energy absorbing part 166 is located in front of the rail 154,
The energy absorbing portion 167 is located behind the rail 154.
You. The inner panel 164 of the center pillar 156
Accommodates rail 154 recessed from general surface 170
The energy absorbing material 160
The portion 169 is in contact with the upper and lower general surfaces 170 that have deviated from the concave portion 171.
I'm touching. Therefore, the connecting portion 1 of the energy absorbing material 160
68, 169 and the general surface 170 of the inner panel.
The energy absorbing material 160
Attached to the roller 156 or the energy absorbing material 160
Is attached to the pillar garnish 158 for use. Energy absorption shown in FIGS.
Materials 122, 126, 130, 134, 140, 160
Itself becomes a shock energy absorbing component,
Place energy absorbing components in place
Thereby, an impact energy absorbing structure can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an impact energy absorbing structure on an upper part of a vehicle body, which is cut and enlarged along the line 1-1 in FIG. FIG. 2 is a cross-sectional view showing an impact energy absorbing structure at an upper portion of the vehicle body, which is cut and enlarged along line 2-2 in FIG. FIG. 3 is a schematic view showing a part of a vehicle body to which an impact energy absorbing structure on an upper part of the vehicle body can be applied. FIG. 4 is an energy absorption characteristic diagram of load versus displacement. 5 is a cross-sectional view showing an impact energy absorbing structure at an upper part of the vehicle body, which is cut and enlarged along a line 5-5 in FIG. FIG. 6 is a cross-sectional view showing an impact energy absorbing structure at an upper part of the vehicle body, which is cut and enlarged along line 6-6 in FIG. 7 is a cross-sectional view showing an impact energy absorbing structure at an upper part of the vehicle body, which is cut and enlarged along the line 7-7 in FIG. FIG. 8 is a schematic view showing a part of a vehicle body to which an impact energy absorbing structure on an upper part of the vehicle body can be applied. FIG. 9 is a perspective view showing a part of the energy absorbing material. FIG. 10 is an energy absorption characteristic diagram of load versus displacement. FIG. 11 is an energy absorption characteristic diagram of load versus displacement. FIG. 12 is a perspective view showing a part of a metal pipe that can be used for an impact energy absorbing structure on an upper part of a vehicle body. FIG. 13 is a perspective view showing a part of a hybrid pipe that can be used for an impact energy absorbing structure on an upper part of a vehicle body. FIG. 14 is an enlarged sectional view taken along line 14-14 in FIG. FIG. 15 is a perspective view of a hybrid pipe used for an impact energy absorbing structure on an upper part of a vehicle body according to the present invention, for a front pillar. FIG. 16 is a perspective view of a hybrid pipe used for an impact energy absorbing structure on an upper part of a vehicle body according to the present invention, for a center pillar. FIG. 17 is a perspective view of a hybrid pipe used for an impact energy absorbing structure on an upper part of a vehicle body according to the present invention, for a quarter pillar. FIG. 18 is a perspective view of a hybrid pipe used for an impact energy absorbing structure on an upper part of a vehicle body according to the present invention, which is for a roof side rail. FIG. 19 is a perspective view of a vehicle body to which the impact energy absorbing structure of the upper part of the vehicle body according to the present invention can be applied. FIG. 20 is a perspective view showing a part of a hybrid pipe that can be used in the impact energy absorbing structure of the upper part of the vehicle body according to the present invention. FIG. 21 is an energy absorption characteristic diagram of load versus displacement. FIG. 22 is a horizontal sectional view of a center pillar to which the hybrid pipe shown in FIG. 16 is attached. FIG. 23 is a perspective view showing the belt adjuster supporting portion and the belt, and shows the belt without an energy absorbing material. [Description of Signs] 20, 50, 120, 124, 128, 156 Structural members 22, 52, 158 Interior materials 122, 126, 130, 134 Energy absorbing materials 140, 160 Energy absorbing materials 32, 62 Intervals 40, 64, 66 , 68 Clearance 42, 70, 72, 74 Spacer material

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 21/02-21/04 B62D 25/04-25/06 B60R 13/02

Claims (1)

(57) [Claim 1] A structural member of a vehicle body extending in a longitudinal direction, and an interior material disposed at an interval inside the structural member;
A structure for absorbing impact energy in an upper portion of the vehicle body, the energy absorbing member being provided within the interval and having an energy absorbing material extending in a longitudinal direction along the structural member, wherein the energy absorbing material includes a metal foil core material, A hollow hybrid pipe formed of a sheet of a material other than metal, which is superimposed on the front and back surfaces of the core material, and formed by continuously deforming the core material and the sheet into an uneven shape in the axial direction. The hybrid pipe has an upper portion of a vehicle body in which an outer peripheral length of a cross section orthogonal to the axis is substantially constant in the axial direction, the cross sectional shape is formed so as to be gradually different in the axial direction, and is twisted around the axis. Impact energy absorbing structure.