JP5561152B2 - Energy absorption structure - Google Patents

Description

  The present invention relates to an energy absorbing structure having a cylindrical energy absorbing member.

  2. Description of the Related Art Energy absorbing structures are known in which a hollow body of fiber reinforced resin is attached to an outer wall of a moving body (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 5-118370 JP 2005-247096 A

  However, in the structure in which the hollow body is simply attached to the outer wall, when energy is absorbed by the collapse of the hollow body, debris accumulates inside the hollow body closed by the outer wall, and the bottom is attached before the hollow body is completely crushed. End up.

  An object of the present invention is to obtain an energy absorption structure capable of increasing an energy absorption stroke due to the collapse of the energy absorber.

The energy absorbing structure according to the first aspect of the present invention is formed in a cylindrical shape with fiber reinforced resin and is crushed by an input load from the axial direction, opposite to the load input side of the energy absorbing member. cut a plate-shaped supporting member bonded to the axial end portion of the side Oite the joint portion between the support member and the energy absorbing member, the end portion of the support member side in the cylindrical wall of the energy absorbing member And a discharge part for discharging the fragments generated when the energy absorbing member is crushed to the outside from the space in the energy absorbing member.

In the energy absorbing structure according to any one of claims 1 to 4 , when a load of a predetermined value or more is input to the other end of the energy absorbing member joined directly or indirectly to the support member on one end side in the axial direction, the load As a result, the energy absorbing member is crushed and energy is absorbed. At least a part of the fragments of the energy absorbing member generated by the crushing is discharged outside the energy absorbing member through the discharge portion. For this reason, in this energy absorption structure, it is suppressed that a debris accumulates in an energy absorption member, and the energy absorption stroke by the collapse of an energy absorption structure can be increased by this much.

Thus, in the energy absorbing structure according to claim 1-4, wherein it is possible to increase the energy absorption stroke due to crushing of the energy absorber.

In the energy absorption structure of Claims 1-3, the fragment of this energy absorption member is discharged | emitted on the outer side of the cylinder wall of the energy absorber which comprises a cylinder shape. That is, the debris is well discharged along the direction intersecting the axial direction of the energy absorbing member.

In the energy absorbing structure according to the fourth aspect , fragments of the energy absorbing member are well discharged to the outside of the energy absorbing member along the thickness direction of the support member, that is, the axial direction of the cylindrical energy absorber.

The energy absorbing structure according to claim 1, wherein, through the notch portion provided in the cylindrical wall of the energy absorbing member, fragments of the energy absorbing member is satisfactorily discharged along the cross direction of the axial direction of the energy absorbing member.

An energy absorption structure according to the invention of claim 2 is formed in a cylindrical shape with fiber reinforced resin, and is crushed by an input load from the axial direction, opposite to the load input side of the energy absorption member. A plate-like support member that is joined to the inner peripheral surface of the axial end portion on the side at a joining portion that is inserted into the end portion of the energy absorbing member, and a joining portion between the energy absorbing member and the supporting member In this case, a cut portion is formed in at least one of the cylindrical wall of the energy absorbing member and the joint portion, and fragments generated when the energy absorbing member is crushed from the space inside the energy absorbing member to the outside. And a discharge part for discharging to the outside.

3. The energy absorbing structure according to claim 2 , wherein a fragment of the energy absorbing member crosses the axial direction of the energy absorbing member through a notch provided in at least one of the cylindrical wall of the energy absorbing member and the joint of the support member. Along with good discharge.

An energy absorbing structure according to a third aspect of the present invention is formed in a cylindrical shape with fiber reinforced resin and is crushed by an input load from the axial direction, opposite to the load input side of the energy absorbing member. A plate-like support member joined to the axial end portion on the side, and a concave portion spaced apart from a part of the end surface of the energy absorption member in the circumferential direction at the joint portion between the energy absorption member and the support member. And a discharge portion for discharging fragments generated when the energy absorbing member is crushed and discharged from a space in the energy absorbing member to the outside.

In the energy absorbing structure according to claim 3 , fragments of the energy absorbing member extend along a direction intersecting with the axial direction of the energy absorbing member through a recess (a gap between the end surface of the energy absorbing member) formed on the support member side. Are discharged well.

An energy absorption structure according to a fourth aspect of the present invention is a pair of energy absorption members that are formed in a cylindrical shape with fiber reinforced resin and are crushed by an input load from the axial direction, and that are opposed to the energy absorption member in the axial direction. and sheet material, and a partition wall sandwiched the pair of plate members, are to the axial direction perpendicular to the cross section in the pair of hollow structure space is partitioned into a plurality of spaces between the plate material, wherein A plate-like support member joined to an axial end opposite to the load input side of the energy absorption member, and the energy absorption member of the pair of plate members at a joint portion between the energy absorption member and the support member is formed on the plate located on the side, the a opening for communicating the interior and the hollow structure of the space of the energy absorbing member, said energy debris caused the energy absorbing member with the being crushed And a, a discharge portion for discharging from the space in formic absorbing member to the outside.

In the energy absorbing structure according to claim 4, the opening formed in one plate member of the support member which is a honeycomb structure faces a part of the partitioned space in the honeycomb structure, and through the opening. The fragments of the energy absorbing member are discharged well along the thickness direction of the support member, that is, the axial direction of the energy absorber.

  As described above, the energy absorption structure according to the present invention has an excellent effect that the energy absorption stroke due to the collapse of the energy absorber can be increased.

It is a figure which shows the energy absorption structure which concerns on the 1st Embodiment of this invention, Comprising: (A) is a perspective view, (B) is a sectional side view, (C) is a sectional side view of a modification. (A) is a sectional side view schematically showing a state of an energy absorption process by an energy absorbing member constituting the energy absorbing structure according to the first embodiment of the present invention, and (B) is an energy absorption according to a comparative example. It is a sectional side view which shows typically the state of the energy absorption process by a member. 1 is an exploded perspective view schematically showing an automobile body to which an energy absorbing structure according to a first embodiment of the present invention is applied. It is a figure which shows the energy absorption structure which concerns on the 2nd Embodiment of this invention, Comprising: (A) is a perspective view, (B) is a sectional side view, (C) is a sectional side view of a modification. It is a figure which shows the energy absorption structure which concerns on the 3rd Embodiment of this invention, Comprising: (A) is a perspective view, (B) is a sectional side view. It is a figure which shows the energy absorption structure which concerns on the 4th Embodiment of this invention, Comprising: (A) is a perspective view, (B) is a sectional side view. It is a figure which shows the energy absorption structure which concerns on the 5th Embodiment of this invention, Comprising: (A) is a perspective view, (B) is a sectional side view. It is a figure which shows the energy absorption structure which concerns on the 6th Embodiment of this invention, Comprising: (A) is a perspective view, (B) is a disassembled perspective view. It is a figure which shows the energy absorption structure which concerns on the 6th Embodiment of this invention, Comprising: (A) is a sectional side view, (B) is a sectional side view of a modification.

  An energy absorbing structure 10 according to a first embodiment of the present invention will be described with reference to FIGS. It should be noted that arrows FR, UP, and W, which are appropriately shown in the drawings, respectively indicate the forward direction (traveling direction), the upward direction, and the vehicle width direction of the automobile to which the energy absorbing structure 10 is applied. In the following description, when simply using the front-rear direction and the vertical direction, the vehicle front-rear direction and the vehicle vertical direction are indicated.

  FIG. 3 is a schematic perspective view of an underbody 12 of an automobile to which the energy absorbing structure 10 is applied. As shown in this figure, the underbody 12 is provided with a floor portion 14, a dash lower portion 16 as a standing wall portion erected upward from the front end of the floor portion 14, and an upward orientation from the rear end of the floor portion 14. The lower back portion 18 is configured. Each of the dash lower portion 16 and the lower back portion 18 has a length that extends over substantially the entire width of the floor portion 14, and has a substantially rectangular shape that is long in the vehicle width direction when viewed from the front.

  Further, the front side wall 20 extends rearward from both ends of the dash lower portion 16 in the vehicle width direction, and the rear side wall 22 extends forward from both ends of the lower back portion 18 in the vehicle width direction. The front side wall 20 and the rear side wall 22 are connected by a side wall (rocker) 24 whose lower portions are erected from the outer end in the vehicle width direction of the floor portion 14. As shown in FIG. 3, the underbody 12 is formed in a bathtub shape as a whole (a bathtub shape with a part of the side wall cut off).

  The underbody 12 described above is made of a resin material. As a resin material constituting the underbody 12, for example, a fiber reinforced resin containing reinforcing fibers such as carbon fiber, glass fiber, and aramid fiber may be used.

  An energy absorbing structure 30 constituting the energy absorbing structure 10 is fixed to the front wall 28 constituting the dash lower portion 16 in a surface contact state. The energy absorbing structure 30 includes a plate-like base member 32 and a plurality of energy absorbing members 34 whose rear end sides are joined to the base member 32 as main parts.

  Each energy absorbing member 34 has a cylindrical shape in which the axial direction is substantially coincident with the front-rear direction, and has a hollow structure. Each energy absorbing member 34 is made of fiber reinforced resin, and is configured to absorb energy while being crushed when a compressive load of a predetermined value or more is input in the axial direction. As fiber reinforced resin which comprises the energy absorption member 34, what contains reinforcing fibers, such as carbon fiber, glass fiber, an aramid fiber, can be used, for example.

  As shown in FIGS. 1A and 1B, each energy absorbing member 34 has a rear end surface 34 </ b> A bonded to a front surface 32 </ b> A of the base member 32 with an adhesive 36. As shown in FIG. 3, a plurality of energy absorbing members 34 are arranged in the vertical direction and the vehicle width direction, respectively.

  In the energy absorbing structure 10, as shown in FIGS. 1A and 1B, the discharge portion 38 is provided at the rear end portion of the energy absorbing member 34 that is a joint portion (in the vicinity) with the base member 32. Is formed. In this embodiment, the discharge portion 38 includes a notch (notch) 40 having a substantially “U” -shaped edge opening rearward at the rear end of the cylindrical wall of the energy absorbing member 34 (energy absorbing member 34 itself). It is configured by forming.

  In this embodiment, a plurality (four in the illustrated example) of discharge portions 38 are formed in the circumferential direction of the energy absorbing member 34. Each discharge part 38 comprises the path | route which discharge | releases the fragment H of this energy absorption member 34 produced when the energy absorption member 34 is crushed to the outer side with respect to the space in this energy absorption member 34. As shown in FIG. Note that FIG. 1B shows different cross sections (a portion where the discharge portion 38 is formed and a portion where the discharge portion 38 is not formed) on both sides of the center line CL.

  In addition, the energy absorbing structure 30 has an interval between the adjacent energy absorbing members 34 so that the adjacent energy absorbing members 34 do not hinder the discharge of the fragments H from the discharge portion 38.

  Next, the operation of the first embodiment will be described.

  In the energy absorbing structure 10 having the above-described configuration, the collision body I collides with the front end of the energy absorbing member 34. When the axial compressive load at this time exceeds a predetermined value, the energy absorbing member 34 is crushed in the axial direction. While absorbing the collision energy. Thereby, in the energy absorption structure 10, a deformation | transformation of a rear part rather than the base member 32, ie, the underbody 12, (cabin) is suppressed.

  Here, in the energy absorbing structure 10, since the energy absorbing member 34 is provided with the discharge portion 38, it is possible to take a large shock absorbing stroke at the time of a collision with respect to the entire length of the energy absorbing member 34. This point will be described in comparison with a comparative example shown in FIG.

  In the comparative example shown in FIG. 2B, the energy absorbing member 100 that does not have the discharge portion 38 (the cut portion 40) is provided instead of the energy absorbing member 34. In this configuration, as the energy absorbing member 100 is crushed, the fragments H of the energy absorbing member 100 accumulate in the hollow energy absorbing member 100. For this reason, when the collision object I reaches the part where the debris H is accumulated, it bottoms out, and further effective energy absorption is inhibited. For this reason, in order to ensure the required energy absorption stroke, the energy absorption member 100 needs measures, such as setting the full length long. That is, the sum of the length that cannot be crushed due to accumulation of the fragments H and the length that is crushed is required.

  On the other hand, in the energy absorbing structure 10, since the energy absorbing member 34 is provided with the discharge portion 38, as shown in FIG. 2A, the fragments H generated when the energy absorbing member 34 is crushed are The energy absorbing member 34 is discharged from the discharge unit 38 by an air flow (positive pressure) accompanying a decrease in volume. Thereby, it is prevented or remarkably suppressed that the debris H accumulates in the energy absorption member 34, and the energy absorption stroke which occupies the full length of the energy absorption member 34 becomes long compared with the said comparative example.

  Thus, in the energy absorption structure 10 according to the first embodiment, the energy absorption stroke due to the collapse of the energy absorber can be increased. In addition, although the load (energy absorption amount) at the time of energy absorption reduces compared with another part, the formation part of the notch part 40 in the energy absorption member 34 contributes to energy absorption (included in energy absorption stroke). ).

  In the energy absorbing structure 10 according to the first embodiment, an example in which the energy absorbing structure 30 includes a base member 32 joined to a front wall 28 as a support member (the energy absorbing member 34 is indirectly a front wall). 28), the present invention is not limited to this. For example, as shown in FIG. 1C, the energy absorbing member 34 may be directly joined to the front wall 28 (dash lower portion 16) as a support member.

  Next, another embodiment of the present invention will be described. Note that parts and portions that are basically the same as those in the first embodiment or the previous configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and description thereof is omitted.

(Second Embodiment)
FIG. 4A shows an energy absorption structure 50 according to the second embodiment of the present invention in an exploded perspective view. As shown in this figure, the energy absorbing structure 50 includes a base member 52 and a plurality of energy absorbing members 34 instead of the energy absorbing structure 30 having the base member 32 and the plurality of energy absorbing members 34 as main parts. An energy absorbing structure 54 as a main part is provided.

  The base member 52 has an annular fitting wall portion 56 as a joint portion that enters the energy absorbing member 34, and the outer peripheral surface 56 </ b> A of the fitting wall portion 56 is an adhesive 36 as shown in FIG. 4B. And bonded to the inner peripheral surface 34B of the energy absorbing member 34 by adhesion.

  In addition, a cut portion 58 having an edge portion that opens forward is formed at a position corresponding to the cut portion 40 of the energy absorbing member 34 in the circumferential direction of the fitting wall portion 56. A discharge portion 38 is formed by the cut portion 40 on the energy absorbing member 34 side and the fitting wall portion 56 on the base member 52 side. The other structure in the energy absorption structure 50 is comprised similarly to the structure corresponding to the energy absorption structure 10 including the part which is not shown in figure.

  Therefore, also by the energy absorption structure 50 according to the second embodiment, basically the same effect can be obtained by the same operation as the energy absorption structure 10 according to the first embodiment. Moreover, in the energy absorption structure 50, since the fitting wall part 56 of the base member 52 has overlapped with the rear-end side of the energy absorption member 34, by comprising the base member 52 with fiber reinforced resin, It can be set as the structure which compensates the energy absorption amount reduced by formation by crushing of the fitting wall part 56. FIG.

  In the second embodiment, an example in which the fitting wall portion 56 is formed in a cylindrical shape (cut-and-raised shape) is shown. However, the present invention is not limited to this, and for example, as shown in FIG. As shown, instead of the fitting wall portion 56, a bottomed cylindrical fitting wall portion 59 may be provided. In this case, the cut portion 58 is formed to extend from the outer peripheral surface 59A to the bottom portion 59B.

  Moreover, in 2nd Embodiment, although the notch part 40 was formed in the energy absorption member 34, and the notch part 58 was formed in the fitting wall part 56, this invention is not limited to this. For example, the rear end surface 34A of the energy absorbing member 34 is separated from the front wall 28 and the inner peripheral surface 34B of the energy absorbing member 34 and the outer peripheral surface 56A of the fitting wall portion 56 are joined, or the rear end surface 34A It is good also as a structure which the notch part 58 forms the discharge part 38 independently by setting it as the structure which joins the front-end surface of the fitting wall part 56 via the adhesive agent 36. FIG. In these cases, the energy absorbing member 34 may not be provided with the cut portion 40 (instead of the energy absorbing member 34, an energy absorbing member 64 described later may be employed).

(Third embodiment)
FIG. 5 (A) shows an energy absorption structure 60 according to the third embodiment of the present invention in an exploded perspective view. As shown in this figure, the energy absorbing structure 60 includes a base member 62 and a plurality of energy absorbing members 64 instead of the energy absorbing structure 30 having the base member 32 and the plurality of energy absorbing members 34 as main parts. An energy absorbing structure 66 as a main part is provided.

  The energy absorbing member 64 differs from the energy absorbing member 34 only in that the notch 40 is not provided. The base member 62 has a fitting wall portion 68 as a joint portion. The fitting wall portion 68 is formed with an adhesive surface 68A joined to the inner peripheral surface 64A of the energy absorbing member 64 via the adhesive 36, and a concave surface 68B separated from the inner peripheral surface 64A. In this embodiment, a plurality of adhesive surfaces 68A and concave surfaces 68B are alternately provided in the circumferential direction.

  A recess 62A that is recessed in the thickness direction so as to open forward is formed in the portion of the base member 62 where the recessed surface 68B is formed in the fitting wall portion 68. As shown in FIG. 5B, a gap is formed between the base member 62 and the rear end face 64B of the energy absorbing member 64 in the recess 62A. That is, the gap G1 between the inner peripheral surface 64A and the concave surface 68B and the gap G2 between the rear end surface 64B and the concave portion 62A are connected to form the discharge portion 38 in this embodiment.

  In the energy absorbing structure 60, the concave portion 28A is also formed in the front wall 28 so as to receive the concave surface 68B that protrudes backward. The other structure in the energy absorption structure 60 is comprised similarly to the structure corresponding to the energy absorption structure 50 (energy absorption structure 10) including the part which is not shown in figure.

  Therefore, also by the energy absorption structure 50 according to the third embodiment, basically the same effect can be obtained by the same operation as the energy absorption structures 10 and 50 according to the first and second embodiments. Further, in the energy absorbing structure 60, since the energy absorbing member 64 does not have the cut portion 40, substantially the entire length of the energy absorbing member 64 can be used for energy absorption (compared with the energy absorbing member 34 having the same length). The amount of energy that can be increased).

(Fourth embodiment)
FIG. 6 (A) shows an energy absorption structure 70 according to the fourth embodiment of the present invention in an exploded perspective view. As shown in this figure, the energy absorbing structure 72 constituting the energy absorbing structure 70 is configured by joining a plurality of energy absorbing members 64 to the front wall 28 of the dash lower portion 16.

  The rear end face 64B of the energy absorbing member 64 is joined to the front face 28B of the front wall 28 by an adhesive 36. The front wall 28 has a recess 28C that forms a gap G3 with the recess 62A. In this embodiment, the some discharge part 38 is formed in the circumferential direction by arrange | positioning the some recessed part 28C in the circumferential direction. The other structure in the energy absorption structure 70 is comprised similarly to the structure corresponding to the energy absorption structures 10 and 60 including the part which is not shown in figure.

  Therefore, the energy absorbing structure 70 according to the fourth embodiment also basically excludes the energy absorbing effect due to the crushing of the fitting wall portion 68, and the energy absorbing structures 10, 60 according to the first and third embodiments. The same effect can be obtained by the same action.

  In the fourth embodiment, the energy absorbing member 64 is joined to the front wall 28 as a support member. However, the present invention is not limited to this. For example, a plurality of energy absorbing members 64 are supported. It is good also as a structure joined to the dash lower part 16 as a member. In this case, the dash lower portion 16 is provided with a recess corresponding to the recess 28C.

(Fifth embodiment)
FIG. 7A shows an energy absorption structure 75 according to the fifth embodiment of the present invention in an exploded perspective view. As shown in this figure, the energy absorbing structure 74 constituting the energy absorbing structure 75 is configured such that a bottomed fitting wall portion 76 as a joint portion protrudes from the front wall 28 of the dash lower portion 16. .

  Similar to the fitting wall portion 68, the fitting wall portion 76 is formed with adhesive surfaces 76A and concave surfaces 76B alternately. On the front wall 28 of the portion of the fitting wall portion 76 where the concave surface 76B is formed. A recess 28 </ b> C that is recessed in the thickness direction so as to open forward is formed. As shown in FIG. 7B, a gap is formed between the front wall 28 and the rear end face 64B of the energy absorbing member 64 in the recess 28C. That is, the gap G1 between the inner peripheral surface 64A and the concave surface 76B and the gap G2 between the rear end surface 64B and the concave portion 62A are connected to form the discharge portion 38 in this embodiment. The other structure in the energy absorption structure 70 is comprised similarly to the structure corresponding to the energy absorption structure 10, 60, 70 including the part which is not shown in figure.

  Therefore, the energy absorbing structure 75 according to the fifth embodiment is basically the energy absorbing structure according to the first, third, and fourth embodiments except for the energy absorbing effect due to the collapse of the fitting wall portion 68. The same effect can be obtained by the same operation as that of 10 and 60.

(Sixth embodiment)
FIG. 8A shows an energy absorption structure 80 according to the sixth embodiment of the present invention in a perspective view, and FIG. 8B shows an exploded perspective view of the energy absorption structure 80. ing. As shown in these drawings, the energy absorbing structure 80 is replaced with an energy absorbing structure 66 having a base member 62 and a plurality of energy absorbing members 64 as main parts, and a base member 82 and a plurality of energy absorbing members 64. And an energy absorbing structure 84 having a main part as a main part.

  The base member 82 is configured as a honeycomb structure as a hollow structure in which a honeycomb member 90 as a partition wall is sandwiched between a front wall 86 and a rear wall 88 as a pair of plates facing each other in the front-rear direction. . The honeycomb member 90 is a honeycomb-like wall (aggregate thereof) erected between the front wall 86 and the rear wall 88 in the front-rear direction, and a plurality of spaces between the front wall 86 and the rear wall 88 are formed. Is partitioned into a space R.

  The front wall 86 is formed with a through hole constituting the discharge portion 92, and several spaces R of the base member 82 face the discharge portion 92. 9A, the rear end face 64B of the energy absorbing member 64 is joined to the peripheral edge portion of the discharge portion 92 on the front face 86A of the front wall 86 with an adhesive 36. As shown in FIG. Thereby, in the energy absorption structure 80, the fragments H of the energy absorption member 64 are discharged from the discharge portion 92 into the space R of the base member 82. The other structure in the energy absorption structure 70 is comprised similarly to the structure corresponding to the energy absorption structure 10 including the part which is not shown in figure.

  Therefore, also by the energy absorption structure 80 according to the sixth embodiment, basically the same effect can be obtained by the same operation as that of the energy absorption structure 10 according to the first embodiment. Moreover, in the energy absorption structure 80, since the fragments H are discharged in the thickness direction of the base member 82, the discharge of the fragments H is not hindered by the adjacent energy absorption members 64. Therefore, in the energy absorbing structure 80, the energy absorbing members 64 can be arranged densely compared to the energy absorbing structures 10, 50, 60, and 70.

  In the sixth embodiment, the rear end face 64B of the energy absorbing member 64 is joined to the front face 86A of the front wall 86. However, the present invention is not limited to this example. For example, FIG. As shown in FIG. 6, the outer peripheral surface 94 </ b> A of the fitting wall portion 94 protruding forward from the peripheral portion of the discharge portion 92 in the front wall 86 is joined to the inner peripheral surface 64 </ b> A of the energy absorbing member 64 through the adhesive 36. You may do it.

  Further, in each of the above-described embodiments, the energy absorbing structures 30, 54, 66, 72, 74, and 84 are joined to the front wall 28 of the dash lower portion 16, but the present invention is not limited to this. For example, the energy absorbing structures 10, 50, 60, 70, 75, 80 are formed on the energy absorbing structures 30, 54, 66, 72, and the supporting members of the vehicle body that cannot form holes for discharging the fragments H to the anti-collision side. 74 and 84 may be joined.

  Furthermore, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the scope of the invention.

10 Energy absorption structure 28 Front wall (support member)
28C Recess 32 Base member (support member)
34 Energy absorption member 38 Discharge part 40 Cut part 50/60/70/75/80 Energy absorption structure 52/62/82 Base member 56/59/68/76/94 Fitting wall (joint part)
62A Concave portion 64 Energy absorbing member 86 Front wall (one of a pair of plate members)
88 Rear wall (the other of a pair of plates)
90 Honeycomb member (compartment wall)
92 Discharge section

Claims (4)

An energy absorbing member that is formed into a tubular shape with fiber reinforced resin and is crushed by an input load from the axial direction;
A plate-like support member joined to an axial end of the energy absorbing member opposite to the load input side;
Oite the joint portion between the support member and the energy absorbing member is formed by providing an end portion in the notched portion of the support member side in the cylindrical wall of the energy absorbing member, the said energy absorbing member is crushed A discharge part for discharging fragments generated along with the outside from the space in the energy absorbing member;
Energy absorption structure with An energy absorbing member that is formed into a tubular shape with fiber reinforced resin and is crushed by an input load from the axial direction;
A plate-like support member joined to the inner peripheral surface of the end portion in the axial direction opposite to the load input side of the energy absorbing member at a joining portion that has entered the end portion of the energy absorbing member;
In the joining portion between the energy absorbing member and the support member, the energy absorbing member is formed by providing a notch in at least one of the cylindrical wall of the energy absorbing member and the joining portion, and as the energy absorbing member is crushed. A discharge part for discharging the generated debris from the space in the energy absorbing member to the outside;
Energy absorbing structure with. An energy absorbing member that is formed into a tubular shape with fiber reinforced resin and is crushed by an input load from the axial direction;
A plate-like support member joined to an axial end of the energy absorbing member opposite to the load input side;
In the joint portion between the energy absorbing member and the support member, the recess is formed in the support member so as to be separated from a part of the end surface of the energy absorbing member in the circumferential direction, and the energy absorbing member is crushed. A discharge part for discharging fragments generated along with the outside from the space in the energy absorbing member;
Energy absorbing structure with. An energy absorbing member that is formed into a tubular shape with fiber reinforced resin and is crushed by an input load from the axial direction;
The energy absorbing member includes a pair of plate members facing each other in the axial direction and a partition wall sandwiched between the pair of plate members, and a plurality of spaces between the pair of plate members in a cross-sectional view orthogonal to the axial direction. A plate-like support member joined to an axial end of the energy absorbing member opposite to the load input side;
An opening that is formed in a plate member located on the energy absorbing member side of the pair of plate members at a joint portion between the energy absorbing member and the support member, and communicates the inside of the energy absorbing member and the space in the hollow structure. A discharge part for discharging fragments generated when the energy absorbing member is crushed from the space in the energy absorbing member to the outside;
Energy absorbing structure with.

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