JP4547882B2 - EA material mounting structure - Google Patents

Description

  The present invention relates to an attachment structure for an EA material (impact energy absorbing material), and more particularly to an attachment structure for an EA material suitable for application to an automobile trim.

  An EA material made of hard urethane is attached to a door trim of an automobile for energy absorption (EA) at the time of a side collision (side collision). As a method of attaching a hard urethane EA material to the door trim, Japanese Patent Application Laid-Open No. 2001-322507 describes a structure shown in FIGS. FIG. 5 is a cross-sectional view showing the EA material mounting structure described in FIG. 7 of the publication, FIG. 6A is a perspective view of the cylindrical body 20 used in this structure, and FIG. 2 is a cross-sectional perspective view of the cylindrical body 20. FIG.

  The cylindrical body 20 is integrally provided with a cylindrical portion 21 and an overhang portion 22. A claw portion 23 is provided inward from the tip of the tube portion 21. A concave portion 27 is provided on the outer peripheral surface of the rod 26 protruding from the trim 31, and the claw portion 23 is engaged with the concave portion 27.

  Note that a slit 24 extends from the tip of the tube portion 21 in a direction parallel to the axial center line of the tube portion 21, and the tube portion 21 can be elastically deformed in the diameter increasing direction.

  To attach the EA material 33 to the trim 31, place the EA material 33 along the surface of the trim 31 so that the rod 26 is inserted into the attachment hole 34 of the EA material 33, and then fit the cylindrical body 20 to the rod 26. Then, the claw portion 23 is engaged with the concave portion 27. Thereby, the overhanging portion 22 presses the peripheral edge portion of the mounting hole 34 of the EA material 33.

The cylindrical portion 21 has a tapered shape that is easy to insert into the mounting hole 34. When the cylindrical body 20 is mounted on the rod 26, the outer peripheral surface of the cylindrical portion 21 is in close contact with the inner peripheral surface of the mounting hole 34.
JP 2001-322507 A

  In the conventional attachment structure of the EA material, the cylindrical body 20 and the EA material 33 are separated from each other. Therefore, when the EA material is attached to the trim 31, the EA material is applied to the trim 31. Two work processes, the work and the work of fitting the cylindrical body 20 on the rod 26 thereafter, are required, and the work is troublesome.

  An object of the present invention is to provide an attachment structure for an EA material in which the workability of attaching the EA material to a member such as a trim is remarkably improved.

The attachment structure of the EA material of the present invention is a structure in which the EA material is attached to the member, and the engaging portion provided in the member engages with the locked portion provided integrally with the EA material. In the EA material mounting structure in which the EA material is attached to the member, the locked portion includes a rectangular cylindrical opening into which the locking portion is inserted, and an inner peripheral surface of the rectangular cylindrical opening. A step portion provided in a direction, and the locking portion has a claw portion engaged with an edge portion of the step portion, and a cross-sectional shape in a direction orthogonal to the cylindrical axis direction of the rectangular cylindrical opening Is an attachment structure of an EA material having a length in the long side direction of the rectangle that is larger than the width in the long side direction of the locking portion existing in the rectangle, The EA material is attached to the member by a stop portion and a locked portion, and the rectangular cylindrical opening in a part of the locked portions among the plurality of locked portions The long side direction, as a long side direction and the orthogonal direction of the rectangular square tube form openings in the engaged portion of the remaining portion, are disposed locking portion and the locked portion of the plurality several pairs It is characterized by this.

  In this EA material mounting structure, since the locked portion is integrated with the EA material, the locked portion is engaged with the member while the EA material with the locking portion is applied to the member. The EA material can be attached to the member in one work process of engaging with the stop.

  In the present invention, the locking portion is elastically deformable, and after being elastically deformed when being engaged with the locked portion, the locking portion is elastically restored to be engaged with the locked portion. By doing so, the locking portion can be easily engaged with the locked portion.

In the present invention, the the engaged portion that having a stepped portion provided on the inner peripheral surface of the cylindrical opening in the circumferential direction. Thus, the locked part which has a step part can be easily provided in a desired position. In this case, it is preferable that the locking part has a claw part engaged with the edge part of the step part. In particular, the locking portion is a protrusion protruding from the member, and it is preferable that a claw portion is provided on a side surface in the protruding direction of the protrusion, and a plurality of the protrusions are provided along the circumferential direction of the stepped portion. Preferably it is.

  With such an attachment structure of the EA material, the EA material can be attached to the member by applying the EA material to the member while inserting the protrusion into the cylindrical opening. Further, by providing a plurality of protrusions along the edge of the stepped portion, movement (backlash) in the direction along the member surface of the EA material is prevented.

  In this invention, it is preferable that the edge part of the said step part is clamped between the said member and the said nail | claw part. Thus, by holding the edge part of a step part with a member and a nail | claw part, the movement (backlash) of the EA material to the member contact / separation direction is prevented.

  In the present invention, most of the locked portion is embedded in the EA material, and only the front end surface of the locked portion protrudes from the EA material, so that the coupling strength between the locked portion and the EA material is increased. Can be increased. Moreover, the shock absorption characteristic of the EA material in the vicinity of the locked portion can be enhanced by providing the base of the locked portion so as not to penetrate the EA material.

In the present invention, the opening is Ru square tubular shape der. When the opening has a rectangular tube shape, the locking portion inserted into the rectangular tube opening has a substantially quadrangular prism shape, so that the locking portion can be easily formed.

For square tube shape opening, a cross-sectional shape of the cylinder axis direction and the orthogonal direction is rectangular, that have stepped portion is provided in the long side direction of the rectangle.

In particular, in the present invention, the EA material is attached to the member by a plurality of pairs of the locking portions and the locked portions, and at least two pairs of the locking portions and the locked portions are rectangular tube-shaped openings. the long side direction of the rectangle that is disposed so as to be perpendicular direction. In this way, the movement of the EA material in two orthogonal directions on the surface of the member such as trim can be effectively suppressed.

In the present invention, the direction of width along the stepped portion of the claw portion is configured to be less than the width of the step portion. If comprised in this way, even if there exists some shift | offset | difference in the installation position to the member of a latching part, or the installation position to the EA material of a to-be-latched part, a latching part is reliably engaged with a to-be-latched part. Can do.

  In the present invention, the inlet side of the cylindrical opening may be a tapered portion that gradually expands. If comprised in this way, it will become easy to insert a latching | locking part in a to-be-latched part. In this case, the end of the cylindrical opening on the inlet side may extend in a direction substantially parallel to the cylindrical axis direction.

  In the present invention, a part of the EA material may contact a member such as a trim. If it does in this way, the attachment to the trim etc. of EA material will become stable.

  In the present invention, the EA material is preferably made of a synthetic resin. The synthetic resin EA material can be firmly integrated by embedding most of the locked portion.

  When manufacturing this synthetic resin-made EA material, shaping | molding can be performed efficiently by making it hold | maintain the said to-be-latched part to the metal mold | die for EA material shaping | molding with magnetic force.

  The EA material mounting structure is suitable for mounting a door trim disposed along the inner surface of the automobile cabin, but is not limited thereto.

  According to the present invention, the EA material can be easily attached to a member such as a trim. According to the present invention, it is possible to improve the impact absorption characteristics of the EA material, and to attach the EA material firmly to the member even if the EA material has various shapes, sizes, and hardnesses.

Hereinafter, reference examples and embodiments will be described with reference to the drawings. FIG. 1A is a cross-sectional view in a substantially horizontal direction showing an EA material mounting structure according to a reference example , FIG. 1B is a perspective view of a locking portion of the EA material mounting structure, and FIG. FIG. 4 is a cross-sectional view for explaining a manufacturing method of the EA material with a locking portion.

  As shown in FIG. 1, an EA material 1 made of a synthetic resin such as rigid urethane foam is attached to a trim (a door trim in this embodiment) 2 as a member via a locking portion 3. In this embodiment, the locked portion 4 is provided on the EA material 1, and the locking portion 3 is engaged with the locked portion 4.

  The locking portion 3 is composed of a pair of protrusions 8 and 8 erected from the trim 2.

  A claw portion 8a is provided on the side surface of the protrusion 8 in the protruding direction so as to protrude laterally. As the claw portion 8a approaches the substantially semi-cylindrical portion 8b constituting the proximal end side of the protrusion 8, the protruding height toward the side increases. Thereby, the protrusions 8 and 8 have a substantially pointed shape, and can be easily inserted into an opening 12 of the locked portion 4 described later.

  The protrusion 8 is formed of a synthetic resin having elasticity, and the protrusions 8 and 8 can be elastically deformed in the approaching direction. Although the number of protrusions 8 is two in the figure, it may be three or more. Practically 2 to 6 are preferable.

  The locked portion 4 includes a cylindrical portion 6, an anchor 5 that protrudes outwardly from the rear end of the cylindrical portion 6, and a flange 7 that protrudes outwardly from the distal end of the cylindrical portion 6. The locked portion 4 is provided with a cylindrical opening 12 penetrating the flange 7, the cylindrical portion 6, and the anchor 5 in the axial center line direction. A step 13 is recessed in the direction. The distance (length) from the outer surface of the flange 7 to the step portion 13 is the same as the length of the substantially semi-cylindrical portion 8 b of the locking portion 3. The depth of the stepped portion 13 is preferably about 0.2 to 2 mm.

  The synthetic resin constituting the locked portion 4 is provided with ferromagnetic particles such as ferrite particles so that the locked portion 4 is magnetically applied to the mold for molding the EA material 1. You may hold | maintain more firmly by the effect | action of.

  As shown in FIG. 1A, the locked portion 4 has a cylindrical portion 6 and an anchor 5 embedded in the EA material 1. In this embodiment, the lower half of the flange 7 is embedded in the EA material 1 and the upper half protrudes from the surface of the EA material 1, but the lower surface of the flange 7 is the EA material 1. The top surface of the flange 7 may be flush with the surface of the EA material 1. However, if the upper surface of the flange 7 protrudes from the surface of the EA material 1 as shown in FIG. 1A, for example, a gap is formed between the trim 2 and the EA material 1, and the EA material 1 Regardless of the smoothness of the surface, the trim 2 and the flange 7 can be directly adhered.

  Although only one locked portion 4 is illustrated in FIG. 1, two or more locked portions 4 may be provided according to the size and shape of the EA material 1. The position of the locked portion 4 is also selected according to the size and shape of the EA material 1.

  The EA material 1 with the locked portion 4 is attached to the trim 2 by applying the projections 8 and 8 to the trim 2 while inserting them into the openings 12. When the EA material 1 is pressed against the trim 2, the protrusions 8 and 8 are pushed into the opening 12. When the claw portion 8a is pressed against the inner peripheral surface of the opening 12, the protrusions 8 and 8 are inserted into the opening 12 while being bent in the approaching direction. When the claw portion 8a reaches the step portion 13, the protrusions 8 and 8 try to return to the original shape elastically, and the claw portion 8a and the trim 2 sandwich the edge portion of the step portion 13. Further, the outer peripheral surfaces of the substantially semi-cylindrical portions 8 b and 8 b of the protrusions 8 and 8 come into contact with the inner peripheral surface of the opening 12 of the locked portion 4.

  As described above, the EA material 1 can be attached to the trim 2 only by one work process of superimposing the EA material 1 with the locked portion 4 on the trim 2, and the attachment work efficiency is remarkably improved. Further, the claw portions 8a, 8a of the projections 8, 8 and the trim 2 sandwich the edge of the step portion 13, and the outer peripheral surfaces of the substantially semi-cylindrical portions 8b, 8b are in contact with the inner peripheral surface of the opening 12. The EA material 1 is immovable in both the surface direction and the contact / separation direction of the trim 2, and the attachment of the EA material 1 becomes extremely firm.

  As shown in FIG. 1A, in the locked portion 4, a part of the flange 7, the cylindrical portion 6, and the anchor 5 are embedded in the EA material 1. Thus, since the locked portion 4 does not penetrate the EA material 1 and the EA material 1 has a sufficient thickness even in the vicinity of the locked portion 4, in the vicinity of the locked portion 4. The EA material 1 also has good shock absorption characteristics.

  In the mounting structure of the EA material 1, the arrangement and number of the locking portions 3 and the locked portions 4 are arbitrary, and even EA materials of various shapes can be firmly and easily attached to the trim. Can be attached. Even if the EA material is soft, the EA material can be firmly fastened by increasing the number of the locking portions 3 and the locked portions 4.

  The inner diameter (diameter) of the opening 12 is preferably about 5 to 30 mm. If the inner diameter is excessively small, the attachment strength of the EA material may be insufficient, or the protrusions 8 may be difficult to insert. Conversely, if the inner diameter is excessively large, it is uneconomical. The length (distance) from the entrance of the opening 12 to the edge of the step portion 13 is preferably about 10 to 30 mm. If this length is excessively small, burrs generated during EA material molding may reach the stepped portion. If this length is excessively large, the protrusion 8 will be long.

  In order to manufacture the EA material 1 with the locked portion 4, a mold composed of the lower mold 10 and the upper mold 11 is used as shown in FIG. 4, and the locked portion 11 </ b> A of the upper mold 11 is locked. The part 4 may be held and a synthetic resin material may be supplied into the cavity and molded. In the case of urethane or the like, a stock solution such as urethane may be supplied into the lower mold 10 and foamed. In addition, it is good also as injection foam molding. In a normal case, the locked portion 4 is held by a frictional force against the protrusion 11A, but may be held by a magnetic force as described above.

Reference Example is an example, may also take the form of outer FIG示以. For example, as shown below, the flange and the anchor may have a shape other than the shape shown in FIG.

Figure 2 (a), (b) is a partial perspective view showing two kinds of distal end side of the engaging portion according to another reference example, FIG. 3 (a), (b) two types according to another reference example It is a fragmentary perspective view which shows the rear-end side of the to-be-latched part. The same reference numerals as those in FIG. 1 denote the same parts.

  The flange is omitted from the engaged portion 4A in FIG. Such a locked portion 4A is preferably used in a place where an area sufficient to install an inclined surface or a flange of the EA material cannot be taken.

  2B has a tapered portion 7B that narrows from the surface position side toward the rear end side on the inner peripheral surface of the flange 7A. In the case of the locked portion 4B, the protrusions 8 and 8 of the locking portion 3 are guided to the opening 12 by the taper portion 7B, so that the EA material can be easily attached to the trim.

  In the locked portion 4C in FIG. 3A, notches 5a are provided at four locations of the annular anchor 5A. In the case of such a locked portion 4C, when the EA material is manufactured, a raw solution such as urethane is supplied to the lower mold, and when this is foamed, the urethane or the like easily goes around the upper surface of the anchor 5A through the notch 5a. The bond between the anchor 5A and the EA material 1 becomes strong.

  The locked portion 4D shown in FIG. 3B has a generally bowl shape in which the outer circumference of the anchor 5B decreases toward the rear end side. In this case, since the upper surface of the anchor 5B has a sufficient area, the anchor 5B has an excellent anchor effect, and the outer periphery becomes smaller from the upper surface of the anchor 5B toward the rear end side. When foaming a stock solution such as urethane, urethane or the like can be easily foamed from the rear end side of the anchor 5B along the upper surface, and then easily wrap around the upper surface side of the anchor 5B. Therefore, the EA material 1 and the anchor 5B And the bond becomes strong.

FIG. 7A is a cross-sectional view in a substantially horizontal direction showing an EA material mounting structure according to a different reference example , FIG. 7B is a cross-sectional view taken along line BB in FIG. 7A, and FIG. ) Is a perspective view showing a locking portion of the EA material mounting structure, and FIG. 8B is a perspective view showing a locked portion of the EA material mounting structure.

  As shown in FIG. 8A, the locking portion 40 is composed of a pair of protrusions 42 and 42 erected from the trim 2.

  These protrusions 42 and 42 are substantially plate-shaped, and are arranged with their plate surfaces facing each other. A claw portion 42a is provided so as to project in the opposite directions from the outward plate surfaces of the protrusions 42, 42. As the claw portion 42a approaches the prismatic portion 42b constituting the base end side of the protrusion 42, the protruding height toward the side increases. As a result, the protrusions 42 and 42 are shaped so that the thickness of the protrusions 42 decreases toward the tip, and can be easily inserted into an opening 55 of the locked portion 50 described later.

  As shown in FIG. 8B, the locked portion 50 includes a rectangular tube portion 53, an anchor 54 projecting outwardly from the rear end of the rectangular tube portion 53, and a trim 2 from the tip of the rectangular tube portion 53. A tapered portion 52 that expands toward the side, and a frame-like portion 51 that extends from the tip of the tapered portion 52 in a direction parallel to the cylindrical axis direction of the rectangular tube portion 53.

  As shown in FIGS. 7A and 7B, the opening 55 of the locked portion 50 passes through the rectangular tube portion 53 in the tube axis direction. On the inner surface of the opening 55, a step portion 56 is provided that extends in a direction orthogonal to the cylinder axis direction. The opening 55 has a rectangular cross section perpendicular to the cylinder axis direction, and the stepped portion 56 is provided so as to go around four sides of the rectangle. The step portion 56 has a shape in which the cross-sectional area of the opening 55 is enlarged on the anchor 54 side and reduced on the taper portion 52 side. In this embodiment, the claw portion 42a is locked to the step portions 56, 56 along the pair of long sides of the rectangle.

  The locked portion 50 includes an anchor 54, a square tube portion 53, a tapered portion 52, and a lower half portion of the frame-like portion 51 embedded in the EA material 1, and an upper half portion (front end side) of the frame-like portion 51. It protrudes from the surface of the EA material 1.

Also in this reference example , the EA material 1 is attached to the trim 2 by inserting the locking portion 40 into the locked portion 50. When the locking part 40 is inserted into the locked part 50, the edge of the stepped part 56 is held between the claw part 42 a and the trim 2.

In this reference example , as shown in FIG. 7B, the width of the protrusion 42 is substantially the same as the width in the rectangular long-side direction at a portion directly above the step portion 56 of the opening 55. For this reason, in a state where the locking part 40 is engaged with the locked part 50, the movement of the locking part 40 in the left-right direction in FIG. 7B is prevented.

In the EA material mounting structure according to this reference example , since the locking portion 40 has a substantially prismatic shape, the locking portion 40 can be formed more easily than the locking portion 3 in FIG. is there. In addition, since the tapered portion 52 is provided in the locked portion 50, it is easy to insert the locking portion 40 into the locked portion 50.

In this reference example , since the front end side of the locked portion 50 protrudes from the surface of the EA material 1, a gap is formed between the trim 2 and the EA material 1, and the smoothness of the surface of the EA material 1 is determined. Regardless, the trim 2 and the flange 51 can be directly adhered to each other. Therefore, the mounting accuracy between the trim 2 and the flange 51 depends only on the fitting accuracy between the locking portion 40 and the locked portion 50, and the mounting is affected by the deformation and variation within the dimensional tolerance of the EA material 1. There is nothing to do.

In the above reference example , the outer surface of the locked portion 50 is angular, but these corners may be rounded. That is, for example, the four corners of the anchor 54, the four corners of the rectangular tube portion 53, the four corners of the flange 51, and the like may be rounded. In this case, when the locked portion 50 is held in the mold, and a raw solution such as urethane is supplied into the mold and foamed to manufacture the EA material 1 with the locked portion 50, the foamed urethane is locked. Since it becomes easy to go around the rounded portion of the stop portion, it becomes easy to fill urethane around the locked portion, and the connection between the locked portion and the EA material becomes strong.

9 (b) is a plan view of a trim used in the mounting structure of the EA material according to the form of implementation, Fig. 9 (b) and the locking portion 40 and the locked portion 50 is engaged It is sectional drawing which shows a state. FIG. 9B is a cross-sectional view taken along the line BB in FIG. 9A in a state where the locking part and the locked part are engaged, and the same part as in FIG. 7B is shown. A cross section is shown.

  In this embodiment, the plurality of locking portions 40 are provided such that the plate surface direction of the plate-like protrusion 42 of the locking portion 40 is the orthogonal direction. In FIG. 9A, in the upper left locking portion 40 in the drawing, the plate surface direction of the projection 42 is the vertical direction (Y direction) in the drawing, and the plate surface direction of the lower right projection 42 in the drawing. Is the left-right direction (X direction) in the figure.

  In this embodiment, the width of the protrusion 42 in the plate surface direction (width in the direction orthogonal to the insertion direction into the opening 55) W is smaller than the width in the direction orthogonal to the insertion direction at a position directly above the step portion 56 of the opening 55. The play is formed between the side of the protrusion 42 and the inner surface of the opening 55.

  In the EA material 1 (not shown in FIG. 9), an equivalent locked portion 50 is disposed at a position facing each locking portion 40, and each locking portion 40 is arranged with respect to each locked portion 50. Thus, the EA material 1 is attached to the trim 2.

  In this EA material mounting structure, as shown in FIG. 9B, the width W of the protrusion 42 is smaller than the width of the opening 55, so that the locking portion 40 and the locked portion 50 are relatively arranged. Even if the actual position is slightly shifted in the X and Y directions, the locking portion 40 can be engaged with the locked portion 50.

  Although two locking portions 40 are shown in FIG. 9, three or more locking portions 40 may be provided in one trim.

  In the above embodiment, only the front end surfaces of the locked portions 4 and 50 are in contact with the trim 2, and the EA material 1 is not in contact with the trim 2 as a whole. You may comprise so that a part may contact | connect the trim 2 directly. If it does in this way, attachment of EA material will become stable.

FIG. 1A is a cross-sectional view showing an attachment structure of an EA material according to a reference example , FIG. 1B is a perspective view of a locking portion of the attachment structure of the EA material, and FIG. It is a perspective view of the to-be-latched part of an attachment structure. 2 (a) is a partial perspective view of the distal end of the engaging portion according to another reference example, FIG. 2 (b) is a partial perspective view of the distal end of the engaging portion according to another reference example is there. FIG. 3A is a partial perspective view showing the rear end side of the locked portion according to another reference example , and FIG. 3B is a partial perspective view showing the rear end side of the locked portion according to another reference example. FIG. It is sectional drawing explaining the manufacturing method of EA material with a to-be-latched part. It is sectional drawing which shows a prior art example. It is explanatory drawing of the structure of FIG. It is sectional drawing which shows a different reference example . It is a perspective view of the latching | locking part of FIG. 7, and a to-be-latched part. It is an illustration of implementation of the invention.

DESCRIPTION OF SYMBOLS 1 EA material 2 Trim 3,40 Locking part 4,4A, 4B, 4C, 4D, 50 Locked part 5,5A, 5B, 54 Anchor 5a Notch part 6Cylinder part 7,7A, 51 Flange 7B, 52 Taper Part 8, 42 Protrusion 8a, 42a Claw part 8b Almost semi-cylindrical part 10 Lower mold 11 Upper mold 11A Projection 12, 55 Opening 13, 56 Step part 42b Square pillar part 53 Square cylinder part

Claims (13)

In the structure in which the EA material is attached to the member, the engaging portion provided on the member engages with the locked portion provided integrally with the EA material, so that the EA material is attached to the member. In the EA material mounting structure
The locked portion includes a rectangular tube opening into which the locking portion is inserted, and a step portion provided in the circumferential direction on the inner peripheral surface of the rectangular tube opening,
The locking part has a claw part engaged with an edge of the step part,
The cross-sectional shape of the rectangular cylindrical opening in the direction perpendicular to the axial direction of the cylinder axis is a rectangle, and the length in the long side direction of the rectangle is the width in the long side direction of the locking portion existing in the rectangle Larger EA material mounting structure,
The EA material is attached to the member by a plurality of pairs of locking portions and locked portions,
The long side direction of the rectangular tube opening in a part of the plurality of locked portions is orthogonal to the long side direction of the rectangular tube opening in the remaining locked portion. A mounting structure for an EA material , wherein the plurality of pairs of locking portions and locked portions are arranged in a direction.   2. The locking portion according to claim 1, wherein the locking portion is elastically deformable and is elastically restored after being elastically deformed when being engaged with the locked portion, thereby being engaged with the locked portion. EA material mounting structure characterized by that. 3. The EA material mounting structure according to claim 2 , wherein the locking portion is a protrusion protruding from the member, and the claw portion is provided on a side surface of the protrusion in a protruding direction. 4. The EA material mounting structure according to claim 3, wherein a plurality of the protrusions are inserted into one rectangular tube opening. 5. The EA material according to claim 4, wherein the EA material is provided with the two locked portions arranged such that the long side directions of the rectangular shape of the rectangular tube opening are orthogonal to each other. Are provided with two locking portions that engage with the two locked portions,
Each of the two locking portions includes two plate-like protrusions arranged with their plate surfaces facing each other, and claws protruding in opposite directions from the outward plate surfaces of these two protrusions And the two outwardly facing plate surfaces are arranged so as to contact a pair of long side surfaces of the rectangular cylindrical opening,
The step portion extends along a pair of long sides of the rectangle of the rectangular tube opening, and the pair of claw portions are locked to the step portions along the pair of long sides. An EA material mounting structure characterized in that 6. The EA material mounting structure according to claim 3 , wherein an edge portion of the stepped portion is sandwiched between the member and the claw portion. In any one of claims 1 to 6, and characterized in that the majority of該被locking portion is embedded in the EA member, only the tip face of該被locking portion projects from the EA member EA material mounting structure. 8. The EA material mounting structure according to claim 7 , wherein the locked portion is embedded in the EA material in a non-penetrating manner. In any one of claims 1 to 8, the inlet side of the square tubular shape openings, the mounting structure of the EA member, characterized in that a tapered shape portion which gradually expanded. In claim 9, the end portion of the inlet side of the square tubular shape openings, the mounting structure of the EA material characterized by extending the cylinder axial direction substantially parallel direction. In any one of claims 1 to 10, the mounting structure of the EA material portion of the EA material is characterized in that in contact with the member. In any one of claims 1 to 11, wherein the member mounting structure of the EA member, which is a trim of a motor vehicle. The mounting structure for an EA material according to any one of claims 1 to 12 , wherein the EA material is made of a synthetic resin such as hard urethane.

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