WO2010004920A1 - Ea material - Google Patents

Ea material Download PDF

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Publication number
WO2010004920A1
WO2010004920A1 PCT/JP2009/062049 JP2009062049W WO2010004920A1 WO 2010004920 A1 WO2010004920 A1 WO 2010004920A1 JP 2009062049 W JP2009062049 W JP 2009062049W WO 2010004920 A1 WO2010004920 A1 WO 2010004920A1
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WO
WIPO (PCT)
Prior art keywords
reinforcing
bodies
reinforcing bodies
main body
reinforcing body
Prior art date
Application number
PCT/JP2009/062049
Other languages
French (fr)
Japanese (ja)
Inventor
堀松利行
Original Assignee
株式会社ブリヂストン
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Filing date
Publication date
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Publication of WO2010004920A1 publication Critical patent/WO2010004920A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0451—Block or short strip-type elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0452—Reinforcement elements including foams or expanded materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/055—Padded or energy-absorbing fittings, e.g. seat belt anchors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/37—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers of foam-like material, i.e. microcellular material, e.g. sponge rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability

Definitions

  • the present invention relates to an EA material (impact energy absorbing material), and more particularly to an EA material suitable for application to automobile trims and the like.
  • FIG. 14 is a cross-sectional view showing the EA material mounting structure described in FIG. 7 of the publication.
  • the EA material 1 made of rigid urethane foam has a main body portion 1b and an overhanging portion 1a as an attachment portion protruding from the side surface of the main body portion 1b.
  • a clip 2 is provided integrally with the overhanging portion 1a.
  • the clip 2 has a cylindrical portion 3 and flange portions 4 provided at both ends of the cylindrical portion 3.
  • the EA material 1 is overlapped with the trim 5 such that the columnar protrusion 6 protruding from the trim 5 is inserted into the cylindrical portion 3 of the clip 2.
  • the protrusion 6 is made of a thermoplastic resin such as polyethylene or polypropylene.
  • a welding jig (not shown) is pressed against the tip of the projection 6, and the tip of the projection 6 is expanded in a substantially disc shape to form a flange-like pressing portion 6a. Thereby, the EA material 1 is fixed to the trim 5.
  • FIG. 15a is a perspective view of the EA material shown in FIG. 1 of the same publication, and FIG. 15b is a cross-sectional view taken along line BB of FIG. 15a.
  • Three mounting plates 13 are provided as protruding portions from the side surface of the EA material body 12 made of rigid urethane foam or the like.
  • the mounting plate 13 is integrated with the EA material main body 12 by being attached to the mold when the EA material main body 12 is foam-molded.
  • the mounting plate 13 is made of urethane resin, nylon, felt press, iron or the like.
  • An opening 14 is provided in the front side of each mounting plate 13 in the thickness direction.
  • the EA material 11 is also attached to the trim in the same manner as in FIG. 14. That is, in order to attach the EA material 1 to the trim 5, a cylindrical protrusion protruding from the trim is provided as in FIG. The rear surface of the EA material main body 12 is overlapped with the trim so as to be inserted into the opening 14. Next, a welding jig (not shown) is pressed against the tip of the projection, and the tip of the projection is expanded in a substantially disc shape to form a flange-like pressing portion. Thereby, the EA material 11 is fixed to the trim. JP-A-2005-207524 JP 2006-22898
  • extending pieces are projected from the flanges 3 and 4 of the clip 2 in FIG. 14 into the main body 1b, and the extending pieces are connected by ribs.
  • the ribs act to reduce the amount of compressive deformation of the EA material.
  • An object of the present invention is to solve such problems and to provide an EA material in which the reinforcing member of the mounting portion is difficult to come off and the amount of shock energy absorbed can be increased.
  • the EA material of the first aspect is an EA material having a main body portion made of a resin foam molded integrally and a mounting portion protruding from a side surface of the main body portion, and a mounting hole passes through the mounting portion.
  • a plurality of reinforcing bodies that are continuous with the cylindrical body and extend into the main body portion Are provided, and at least some of the reinforcing bodies are separated from each other.
  • the EA material of the second aspect is characterized in that, in the first aspect, the distance between the mutually separated portions of each reinforcing body is 3 to 100 mm.
  • the EA material of the third aspect is characterized in that, in the first or second aspect, the reinforcing bodies are separated from each other as a whole.
  • the EA material according to the fourth aspect is characterized in that, in the first or second aspect, the respective reinforcing bodies are in contact with or connected to the ends opposite to the respective cylindrical bodies.
  • the EA material according to the fifth aspect is characterized in that a retaining shape for preventing the reinforcing body from slipping out from the main body is provided on the outer surface of the reinforcing body. It is what.
  • the EA material of the sixth aspect is the fifth aspect, wherein the retaining shape protrudes from the outer surface of the reinforcing body in a direction substantially perpendicular to the extending direction of the reinforcing body or in a direction closer to the cylindrical body. It has the convex part which carried out.
  • the EA material of the seventh aspect is the fifth or sixth aspect, wherein the retaining shape is substantially perpendicular to the extending direction of the reinforcing body from the outer surface of the reinforcing body or farther away from the cylindrical body. It has the recessed part recessed in the direction, It is characterized by the above-mentioned.
  • the EA material of the eighth aspect is characterized in that, in any one of the first to seventh aspects, at least a part of each reinforcing body extends in a non-parallel direction.
  • each reinforcing body extends so as to be separated from each other as at least a part is separated from the cylindrical body.
  • the EA material of the tenth aspect is characterized in that, in the eighth aspect, at least a part of each reinforcing body extends so as to be closer to each other as the distance from the cylindrical body increases.
  • the EA material according to an eleventh aspect according to any one of the first to tenth aspects, wherein the cylindrical body is provided with flange portions on both ends in the cylindrical axis direction, and the reinforcing body is the flange. It is characterized by being connected to the part.
  • the reinforcing body provided in the attachment portion extends into the main body portion, the strength near the base of the attachment portion is high. Since the EA material is provided so that the reinforcing body is embedded in the mounting portion, the reinforcing body is difficult to be removed from the main body portion and can be easily molded.
  • the plurality of reinforcing bodies extend from the common mounting portion to the main body portion.
  • strength near the base of an attaching part is high.
  • these reinforcing bodies are connected to a common cylindrical body, and these are integrally bonded to the urethane foam, so that the reinforcing bodies are compared to the case where each reinforcing body is embedded alone in the main body. It is hard to come off from inside the main body.
  • the reinforcing bodies are separated from each other. That is, at least in the separated portion, there is no rib between the reinforcing bodies. For this reason, when a human body collides with the EA material and the EA material is crushed, the reinforcing bodies easily move closer to each other by crushing the resin foam between them, so that the EA material is sufficiently crushed. become. This increases the amount of impact energy absorbed.
  • the impact energy absorption amount is sufficiently increased by setting the distance between the separated portions of the reinforcing bodies to 3 to 100 mm.
  • the reinforcing bodies are separated from each other as a whole. By configuring in this way, when the EA material is crushed, the reinforcing bodies generally move closer to each other, so that the impact energy absorption amount becomes higher.
  • each reinforcing body may be in contact with or continuous with the ends opposite to the respective cylindrical bodies.
  • the outer surface of the reinforcing body with a retaining shape that prevents the reinforcing body from coming out of the main body, it becomes difficult for the reinforcing body to come out of the main body.
  • This retaining shape is formed from a convex portion (sixth aspect) projecting from the outer surface of the main body portion in a direction substantially orthogonal to the extending direction of the reinforcing body or closer to the cylindrical body, or from the outer surface of the reinforcing body. It can be easily formed by a recess (seventh aspect) recessed in a direction substantially orthogonal to the extending direction of the reinforcing body or in a direction farther away from the cylinder.
  • the reinforcing bodies may extend so as to be separated from each other as they are separated from the cylindrical body as in the ninth aspect, and approach each other as they are separated from the cylindrical body as in the tenth aspect. It may extend as follows.
  • the cylindrical body may be provided with a flange portion.
  • the reinforcing body is connected to the flange portion.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is a perspective view which shows another structural example of a reinforcement body. It is sectional drawing which follows the XI-XI line of FIG.
  • FIG. 15a is a perspective view showing another conventional example
  • FIG. 15b is a cross-sectional view taken along line BB of FIG. 15a.
  • FIG. 1 is a diagrammatic representation of FIG. 1 to 4.
  • FIG. 1 is a sectional view in the thickness direction of the EA material according to the embodiment
  • FIG. 2 is a perspective view of the embedded piece of the EA material
  • FIG. 3 is a plan view of the embedded piece
  • FIG. 4 is FIG.
  • FIG. 4 is a sectional view taken along line IV-IV.
  • the EA material 20 shown in FIG. 1 has a disk-shaped main body portion 21 made of foamed resin such as rigid urethane foam, and an attachment portion 22 projecting from the side surface of the main body portion 21.
  • the attachment portion 22 is provided with an attachment hole 23 for attaching the EA material 20 to a trim or the like.
  • An embedded piece 30 is embedded in the mounting portion 22.
  • the embedded piece 30 includes a cylindrical body 31 that forms the inner peripheral surface of the mounting hole 23, flange portions 32 and 33 provided at both ends of the cylindrical body 31 in the cylinder axial direction, and a reinforcing body 34 that continues to the flange portions 32 and 33. , 35.
  • Each of the reinforcing bodies 34 and 35 preferably has a thickness of about 0.1 to 5 mm.
  • the reinforcing bodies 34 and 35 extend from the attachment portion 22 into the main body portion 21, respectively.
  • the reinforcing bodies 34 and 35 are separated from each other from the end (hereinafter referred to as the base end) on the side of each cylindrical body 31 to the end (hereinafter referred to as the front end) on the main body 21 side. is doing.
  • the reinforcing bodies 34 and 35 are connected so as to be slightly bent with respect to the flange portions 32 and 33 so as to approach each other as the distance from the cylindrical body 31 increases.
  • the crossing angle a between the flange portions 32 and 33 and the reinforcing members 34 and 35 is preferably about 0 to 45 °.
  • the interval b between the tips of the reinforcing bodies 34 and 35 is preferably 3 mm or more in order to enhance the integrity between the urethane foam and the reinforcing bodies 34 and 35.
  • the interval b between the ends of the reinforcing bodies 34 and 35 may be 3 mm or less, and the ends of the reinforcing bodies 34 and 35 may be in contact with each other.
  • the distance between the tips of the reinforcing bodies 34 and 35 is preferably 100 mm or less. Further, the distance c between the flange portions 32 and 33 is preferably 100 mm or less, particularly about 5 to 20 mm.
  • the reinforcing bodies 34 and 35 are plate-shaped, and are provided so that the respective plate surfaces face each other. Openings 36 and 37 are provided in the reinforcing bodies 34 and 35, respectively. In this embodiment, the openings 36 and 37 are long holes extending in the extending direction of the reinforcing bodies 34 and 35. In this embodiment, the protrusions 34a and 35a project from the outer edges of the reinforcing bodies 34 and 35, and the protrusions 34b and 35b project from the inner edges of the reinforcement bodies 34 and 35. Yes.
  • a plurality of convex portions 34 a, 34 b, 35 a, 35 b are provided along the longitudinal sides of the reinforcing bodies 34, 35.
  • the flange portions 32 and 33 are provided with recesses 32a and 33a at locations facing the openings 36 and 37, respectively.
  • the EA material 20 is molded by setting the embedded piece 30 in a mold (not shown) and foaming a urethane stock solution in the cavity. In this case, the entire reinforcing bodies 34 and 35 are disposed in the mold, and urethane foam molding is performed so as to encapsulate the reinforcing bodies 34 and 35.
  • the EA material 20 thus configured is attached to a trim or the like in the same manner as in FIG. That is, the EA material 20 is overlapped on the trim so that the columnar protrusion protruding from the trim (not shown in FIG. 1) is inserted into the mounting hole 23.
  • the protrusion is made of a thermoplastic resin such as polyethylene or polypropylene.
  • a welding jig (not shown) is pressed against the tip of the protrusion, and the tip of the protrusion is expanded in a substantially disk shape to form a flange-like pressing portion.
  • the EA material 20 is fixed to the trim.
  • the two reinforcing bodies 34 and 35 extend from the common attachment portion 22 to the main body portion 21.
  • strength near the base of the attachment part 22 is high.
  • these reinforcement bodies 34 and 35 are connected to the common cylinder 31, and since these are integrally coupled to the urethane foam, each reinforcement body is embedded in the main body 21 alone. Compared to the above, the reinforcing bodies 34 and 35 are less likely to come out of the main body 21.
  • openings 36 and 37 are provided on the base end sides of the reinforcing bodies 34 and 35.
  • the urethane foam on the upper side and the urethane foam on the lower side of the reinforcing bodies 34 and 35 are integrated through the openings 36 and 37. Thereby, the integrity of the reinforcing bodies 34 and 35 and the urethane foam is improved, and the escape from the urethane foam is prevented.
  • the reinforcing bodies 34 and 35 are connected only via the cylinder 31, and only urethane foam exists between the reinforcing bodies 34 and 35 at locations other than the cylinder 31. Therefore, when a human body or the like collides with the EA material 20, the urethane foam between the reinforcing bodies 34 and 35 is also compressed and deformed smoothly so that the reinforcing bodies 34 and 35 approach each other. As a result, the amount of impact energy absorbed is large.
  • the reinforcing bodies 34 and 35 extend in a non-parallel direction, and therefore, when a force is applied to the reinforcing bodies 34 and 35 in the direction of withdrawal from the main body 21, at least one The reinforcing body 34 or 35 always extends in the direction intersecting with the exit direction. Thereby, the reinforcing bodies 34 and 35 are difficult to come out of the main body 21.
  • the reinforcing bodies 34 and 35 are closer to each other as they are separated from the cylindrical body 31, the reinforcing bodies 34 and 35 are disposed at a deep position inside the urethane foam. Therefore, the covering thickness of the urethane foam is large. Therefore, the integrity of the reinforcing bodies 34 and 35 and the urethane foam is high.
  • the protruding portions 34a and 35a are provided as the retaining shapes on the reinforcing bodies 34 and 35, the integrity between the reinforcing bodies 34 and 35 and the urethane foam is high.
  • the recessed parts 32a and 33a of the flange parts 32 and 33 have a function of preventing rotation of the embedded piece 30.
  • the reinforcing bodies 34 and 35 are substantially U-shaped narrow plates surrounding the outer periphery of the openings 36 and 37 and have low rigidity. Therefore, when the EA material 20 is compressed and deformed, it easily follows and deforms. In addition, by providing the openings 36 and 37 as close as possible to the flange portions 32 and 33 as in this embodiment, the urethane easily goes around to the back side of the flange portions 32 and 33.
  • FIGS. 5 to 10 are perspective views of embedded pieces 30A to 30F each having a reinforcing body according to another configuration example
  • FIG. 11 is a longitudinal sectional view taken along line XI-XI in FIG. 10, and FIGS. These are the longitudinal cross-sectional views of the embedded pieces 30G and 30H which concern on another example of a structure.
  • the flange-shaped reinforcing bodies 40 and 41 are connected to the flange portions 32 and 33 at both ends of the cylindrical body 31, respectively.
  • the reinforcing bodies 40 and 41 are respectively provided in the radial direction from the flange portions 32 and 33, that is, in the direction from the inside of the attachment portion 22 to the inside of the main body portion 21 (in FIGS. The main body portion 21 is not shown), and the narrow band-shaped reinforcing body main bodies 40a and 41a extending in a straight line, and the protruding portions as the retaining shapes projecting sideways from the front ends of the reinforcing body main bodies 40a and 41a. 40b, 41b.
  • a pair of convex portions 40b, 40b and 41b, 41b protrude in the opposite directions from the tip portions of the reinforcing body bodies 40a, 41a.
  • each convex part 40b, 41b protrudes in a direction that is substantially orthogonal to the extending direction of the reinforcing body bodies 40a, 41a and that is substantially orthogonal to the cylinder axis direction of the cylinder 31.
  • each convex part 40b, 41b is curved so that the tip side is closer to the cylindrical body 31 side, and has a hook-like shape with a pointed tip side.
  • the reinforcing bodies 40 and 41 are bowl-shaped, and the bowl-shaped protrusions 40b and 40b and 41b and 41b projecting from the front ends of the reinforcing body bodies 40a and 41a to the both sides of the body section 21. Since it bites into the inside, the effect of preventing the reinforcing bodies 40 and 41 from coming off is high.
  • the embedding pieces 30 and 30A are each provided with the two reinforcing bodies 34 and 35 or 40 and 41.
  • three or more reinforcing bodies may be provided. .
  • reinforcing bodies 40A, 40B, 41A, 41B are provided in the embedded piece 30B of FIG. 6, a total of four reinforcing bodies 40A, 40B, 41A, 41B are provided. These reinforcing bodies 40A, 40B, 41A, 41B are respectively saddle shaped similar to the reinforcing bodies 40, 41 of the embedded piece 30A in FIG.
  • the base end of the reinforcing body 40a is connected to the flange portion 32
  • the base end of the reinforcing body 41a is connected to the flange portion 33, respectively.
  • the reinforcing bodies 40A and 40B and 41A and 41B are arranged at intervals in the circumferential direction of the flange portions 32 and 33, respectively. Further, the reinforcing body bodies 40A and 40B and the reinforcing body bodies 41A and 41B extend in a direction substantially parallel to each other.
  • the length of 40a, 41a is made shorter than the reinforcement body 40a, 41a of the other reinforcement body 40B, 41B.
  • the embedded piece 30C shown in FIG. 7 is provided with substantially U-shaped narrow plate-like reinforcing bodies 34 and 35 surrounding the outer periphery of the openings 36 and 37, as in the embedded piece 30 shown in FIGS. .
  • a substantially disk-shaped bulging portion 42 is provided in the middle of the extending direction of the reinforcing bodies 34 and 35 as a retaining shape.
  • a plurality of the bulging portions 42 are provided at intervals along the respective linearly extending portions 34c and 35c extending from the attachment portion 22 toward the main body portion 21 of the reinforcing bodies 34 and 35 (this embodiment).
  • the number of the bulging portions 42 is not limited to this.
  • Each bulging portion 42 is arranged such that its axial direction is the same as the extending direction of each linearly extending portion 34c, 35c.
  • Each bulging portion 42 has a diameter larger than the width and thickness of each linear extending portion 34a, 35a, and each bulging portion 42 extends from the outer periphery of each linear extending portion 34c, 35c. Projects radially around the entire circumference.
  • the bulging portion 42 is not limited to a disk shape, and may be other shapes, for example, a polygonal shape such as a triangle or a quadrangle.
  • the bulging portion 42 protrudes from the outer periphery of each linearly extending portion 34c, 35c of the reinforcing bodies 34, 35 over the entire circumference, so that each linearly extending portion 34c, 35c.
  • the effect of preventing the reinforcing bodies 34 and 35 from coming off from the main body 21 is higher than that in which the convex portions protrude only in the width direction.
  • the reinforcing body connected to the flange portion 32 and the reinforcing body connected to the flange portion 33 are entirely separated from each other.
  • these reinforcing bodies are partially provided. May be in contact with or connected to.
  • two reinforcing bodies 43A and 43B are connected to the flange portion 32, and two reinforcing bodies 44A and 44B are connected to the flange portion 33.
  • the reinforcing bodies 43A and 43B and 44A and 44B are arranged at intervals in the circumferential direction of the flange portions 32 and 33, respectively. Further, these reinforcing bodies 43A, 43B, 44A, 44B extend in a substantially parallel direction.
  • the tip portions of the reinforcing bodies 43A and 44A and the tip portions of the reinforcing bodies 43B and 44B facing each other in the axial direction of the cylindrical portion 31 are connected by the connecting piece 45, respectively.
  • the connecting piece 45 is a thin film.
  • the connecting piece 45 is formed integrally with each reinforcing body 43A, 44B, 44A, 44B.
  • the thickness of the connecting piece 45 is preferably 0.05 to 0.5 mm.
  • the distal ends of the reinforcing bodies 43A and 44A and the distal ends of the reinforcing bodies 43B and 44B are connected by a connecting piece 45, respectively. Therefore, even if a force is applied to the reinforcing bodies 43A, 43B, 44A, and 44B in the direction of coming out from the main body 21, the urethane foam between the reinforcing bodies 43A and 44A and between the reinforcing bodies 43B and 44B. Since the movement of the connecting piece 45 in the removal direction is prevented, the effect of preventing the reinforcement bodies 43A, 43B, 44A, 44B from coming off from the main body 21 is high.
  • the embedded piece 30E in FIG. 9 is obtained by omitting the protrusions 34a, 34b, 35a, and 35b as retaining shapes from the embedded piece 30 in FIGS.
  • the same operational effects as the embedded piece 30 shown in FIGS. 1 to 4 are exhibited except for the retaining effect by the convex portions 34a, 34b, 35a, and 35b.
  • the urethane foam between the reinforcing bodies 34 and 35 is located between the distal ends of the reinforcing bodies 34 and 35. It is difficult to escape from between the reinforcing bodies 34 and 35 through the gap. Therefore, even if a force is applied to the reinforcing bodies 34, 35 in the direction of withdrawal from the main body 21, the urethane foam between the reinforcing bodies 34, 35 prevents the movement in the direction of withdrawal, The effect of preventing the reinforcing bodies 34 and 35 from coming off from the main body 21 is high.
  • the reinforcing body 34, 35 can be disposed deep inside the main body 21.
  • the tip portions of the reinforcing bodies 34 and 35 are separated from each other.
  • the tip portions of 35 may be in contact with each other.
  • the urethane foam between the reinforcing bodies 34 and 35 passes between the front ends of the reinforcing bodies 34 and 35 and the reinforcing body 34. , 35, it is difficult for the reinforcing bodies 34, 35 to come out from each other, so that even if a force is applied to the reinforcing bodies 34, 35 in the direction from the main body 21, the urethane foam between the reinforcing bodies 34, 35 moves in these directions. Therefore, the effect of preventing the reinforcement bodies 34 and 35 from coming off from the main body portion 21 is high.
  • the reinforcing bodies 34 and 35 extend so as to be closer to each other as they are separated from the cylindrical body 31, but in the present invention, the embedded piece shown in FIG. Like 30H, the reinforcing bodies 34 and 35 may extend so as to be separated from each other as the distance from the cylindrical body 31 increases.
  • the above embodiment is an example of the present invention, and the present invention may take forms other than those shown in the drawings.
  • the reinforcing bodies 34 and 35 may be formed in a linear shape such as a string instead of a narrow plate shape.
  • the reinforcement bodies 34 and 35 are the structures which mutually approach or separate from each other as a whole, the front end side of the extension direction of the reinforcement bodies 34 and 35 may be substantially parallel. .
  • the protrusions 34a, 34b, 35a, 35b are provided as the retaining shapes on the reinforcing bodies 34, 35, but a recess may be provided.
  • the convex portion and the concave portion may be provided only on one of the inner peripheral edge and the outer peripheral edge of the reinforcing body.
  • the openings 36 and 37 of the reinforcing bodies 34 and 35 may be omitted.
  • EA material of the present invention may be formed of a resin other than urethane.
  • the EA material of the present invention may be attached to a member other than the trim.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

An EA material configured such that a reinforcing body in a mounting section is less likely to come out of position.  An EA material (20) has a plate-like body section (21) and a mounting section (22) projecting from a side surface of the body section (21), and the body section (21) and the mounting section (22) consist of a foamed resin such as a hard urethane foam.  An embedded piece (30) is embedded in the mounting section (22).  Reinforcing bodies (34, 35) of the embedded piece (30) extend from the mounting section (22) into the body section (21).  Openings (36, 37) are formed in the reinforcing bodies (34, 35).  Projections (34a, 34b, 35a, 35b) are formed on the reinforcing bodies (34, 35).  The reinforcing bodies (34, 35) extend from flange sections (32, 33) so as to come closer to each other toward the front ends of the reinforcing bodies.

Description

ＥＡ材EA material 発明の分野Field of Invention
　本発明は、ＥＡ材（衝撃エネルギー吸収材）に係り、特に自動車のトリム等に適用するのに好適なＥＡ材に関する。 The present invention relates to an EA material (impact energy absorbing material), and more particularly to an EA material suitable for application to automobile trims and the like.
発明の背景Background of the Invention
　自動車のドアトリムには、側面衝突（側突）時の衝撃エネルギー吸収（Ｅｎｅｒｇｙ　Ａｂｓｏｒｐｔｉｏｎ：ＥＡ）のために、硬質ウレタンフォームよりなるＥＡ材を取り付けている。このドアトリムに対し、硬質ウレタンフォーム製ＥＡ材を取り付ける方法として、特開２００５－２０７５２４号には、第１４図に示す構造が記載されている。第１４図は同号公報の図７に記載されたＥＡ材の取付構造を示す断面図である。 An EA material made of rigid urethane foam is attached to the door trim of an automobile in order to absorb impact energy (EA) at the time of a side collision (side collision). As a method of attaching a hard urethane foam EA material to the door trim, Japanese Patent Application Laid-Open No. 2005-207524 describes a structure shown in FIG. FIG. 14 is a cross-sectional view showing the EA material mounting structure described in FIG. 7 of the publication.
　この従来例では、硬質ウレタンフォームよりなるＥＡ材１は、本体部１ｂと、該本体部１ｂの側面から突設された取付部としての張出部１ａとを有する。この張出部１ａにクリップ２が一体に設けられている。このクリップ２は、筒部３と、該筒部３の両端に設けられたフランジ部４とを有する。このＥＡ材１をトリム５に取り付けるには、トリム５から突設された円柱状の突起６が該クリップ２の筒部３に内挿されるようにしてＥＡ材１をトリム５に重ね合わせる。この突起６は、ポリエチレン、ポリプロピレン等の熱可塑性樹脂よりなる。次いで、突起６の先端に溶着治具（図示略）を押し当て、突起６の先端を略円盤状に拡径させてフランジ状押え部６ａを形成する。これにより、ＥＡ材１がトリム５に固定される。 In this conventional example, the EA material 1 made of rigid urethane foam has a main body portion 1b and an overhanging portion 1a as an attachment portion protruding from the side surface of the main body portion 1b. A clip 2 is provided integrally with the overhanging portion 1a. The clip 2 has a cylindrical portion 3 and flange portions 4 provided at both ends of the cylindrical portion 3. In order to attach the EA material 1 to the trim 5, the EA material 1 is overlapped with the trim 5 such that the columnar protrusion 6 protruding from the trim 5 is inserted into the cylindrical portion 3 of the clip 2. The protrusion 6 is made of a thermoplastic resin such as polyethylene or polypropylene. Next, a welding jig (not shown) is pressed against the tip of the projection 6, and the tip of the projection 6 is expanded in a substantially disc shape to form a flange-like pressing portion 6a. Thereby, the EA material 1 is fixed to the trim 5.
　張出部１ａの代わりに取付プレートを設けたＥＡ材が特開２００６－２２８９８号に記載されている。 EA material provided with a mounting plate instead of the overhanging portion 1a is described in JP-A-2006-22898.
　第１５ａ図は同号公報の図１に示されるＥＡ材の斜視図であり、第１５ｂ図は第１５ａ図のＢ－Ｂ線断面図である。 15a is a perspective view of the EA material shown in FIG. 1 of the same publication, and FIG. 15b is a cross-sectional view taken along line BB of FIG. 15a.
　硬質ウレタンフォーム等よりなるＥＡ材本体１２の側面から取付部として３枚の取付プレート１３が突出するように設けられている。この取付プレート１３は、ＥＡ材本体１２の発泡成形時に金型に取り付けておくことにより、ＥＡ材本体１２と一体化される。取付プレート１３は、ウレタン樹脂、ナイロン、フェルトプレス、鉄などよりなる。各取付プレート１３の先端側には開口１４が板厚み方向に貫設されている。 Three mounting plates 13 are provided as protruding portions from the side surface of the EA material body 12 made of rigid urethane foam or the like. The mounting plate 13 is integrated with the EA material main body 12 by being attached to the mold when the EA material main body 12 is foam-molded. The mounting plate 13 is made of urethane resin, nylon, felt press, iron or the like. An opening 14 is provided in the front side of each mounting plate 13 in the thickness direction.
　このＥＡ材１１も前記第１４図と同様にしてトリムに取り付けられる、即ち、このＥＡ材１をトリム５に取り付けるには、第１４図と同様に、トリムから突設された円柱状の突起が該開口１４に内挿されるようにしてＥＡ材本体１２の後面をトリムに重ね合わせる。次いで、突起の先端に溶着治具（図示略）を押し当て、突起の先端を略円盤状に拡径させてフランジ状押え部を形成する。これにより、ＥＡ材１１がトリムに固定される。
特開２００５－２０７５２４ 特開２００６－２２８９８ The EA material 11 is also attached to the trim in the same manner as in FIG. 14. That is, in order to attach the EA material 1 to the trim 5, a cylindrical protrusion protruding from the trim is provided as in FIG. The rear surface of the EA material main body 12 is overlapped with the trim so as to be inserted into the opening 14. Next, a welding jig (not shown) is pressed against the tip of the projection, and the tip of the projection is expanded in a substantially disc shape to form a flange-like pressing portion. Thereby, the EA material 11 is fixed to the trim.
JP-A-2005-207524 JP 2006-22898
　上記第１４図のＥＡ材にあっては、張出部１ａの付け根付近に応力が集中し易い。 In the EA material shown in FIG. 14, the stress tends to concentrate near the base of the overhang portion 1a.
　上記第１５ａ，１５ｂ図のＥＡ材にあっては、取付プレート１３が抜け易い。 In the EA material shown in FIGS. 15a and 15b, the mounting plate 13 is easily removed.
　なお、このような従来技術の短所を克服するために、第１４図のクリップ２のフランジ３，４から本体部１ｂ内にまで延出片を突設し、この延出片同士をリブで連結することが考えられているが、このリブはＥＡ材の圧縮変形量を小さくするように作用する。 In order to overcome such disadvantages of the prior art, extending pieces are projected from the flanges 3 and 4 of the clip 2 in FIG. 14 into the main body 1b, and the extending pieces are connected by ribs. However, the ribs act to reduce the amount of compressive deformation of the EA material.
　本発明は、このような問題点を解決し、取付部の補強体が抜けにくく、また衝撃エネルギーの吸収量を増大させることも可能なＥＡ材を提供することを目的とする。 An object of the present invention is to solve such problems and to provide an EA material in which the reinforcing member of the mounting portion is difficult to come off and the amount of shock energy absorbed can be increased.
　第１態様のＥＡ材は、一体に成形された樹脂発泡体よりなる本体部及び該本体部の側面から突出する取付部を有するＥＡ材であって、該取付部に取付孔が貫通しており、該取付孔の内周面の少なくとも一部を構成するように筒体が該取付部に設置されているＥＡ材において、該筒体に連なり、前記本体部内にまで延在した複数の補強体が設けられており、各補強体は、少なくとも一部が互いに離隔していることを特徴とするものである。 The EA material of the first aspect is an EA material having a main body portion made of a resin foam molded integrally and a mounting portion protruding from a side surface of the main body portion, and a mounting hole passes through the mounting portion. In the EA material in which the cylindrical body is installed in the mounting portion so as to constitute at least a part of the inner peripheral surface of the mounting hole, a plurality of reinforcing bodies that are continuous with the cylindrical body and extend into the main body portion Are provided, and at least some of the reinforcing bodies are separated from each other.
　第２態様のＥＡ材は、第１態様において、各補強体の互いに離隔した部分同士の間隔は３～１００ｍｍであることを特徴とするものである。 The EA material of the second aspect is characterized in that, in the first aspect, the distance between the mutually separated portions of each reinforcing body is 3 to 100 mm.
　第３態様のＥＡ材は、第１又は第２態様において、各補強体は、全体が互いに離隔していることを特徴とするものである。 The EA material of the third aspect is characterized in that, in the first or second aspect, the reinforcing bodies are separated from each other as a whole.
　第４態様のＥＡ材は、第１又は第２態様において、各補強体は、各々の前記筒体と反対側の端部同士が接しているか又は連なっていることを特徴とするものである。 The EA material according to the fourth aspect is characterized in that, in the first or second aspect, the respective reinforcing bodies are in contact with or connected to the ends opposite to the respective cylindrical bodies.
　第５態様のＥＡ材は、第１ないし第４のいずれか１態様において、補強体の外面に、該補強体の前記本体部からの抜け出しを阻止する抜け止め形状が設けられていることを特徴とするものである。 In any one of the first to fourth aspects, the EA material according to the fifth aspect is characterized in that a retaining shape for preventing the reinforcing body from slipping out from the main body is provided on the outer surface of the reinforcing body. It is what.
　第６態様のＥＡ材は、第５態様において、該抜け止め形状は、補強体の外面から該補強体の前記延在方向と略直交方向か又はそれよりも前記筒体に接近する方向へ突出した凸部を有することを特徴とするものである。 The EA material of the sixth aspect is the fifth aspect, wherein the retaining shape protrudes from the outer surface of the reinforcing body in a direction substantially perpendicular to the extending direction of the reinforcing body or in a direction closer to the cylindrical body. It has the convex part which carried out.
　第７態様のＥＡ材は、第５又は第６態様において、該抜け止め形状は、補強体の外面から該補強体の前記延在方向と略直交方向か又はそれよりも前記筒体から離反する方向へ凹陥した凹部を有することを特徴とするものである。 The EA material of the seventh aspect is the fifth or sixth aspect, wherein the retaining shape is substantially perpendicular to the extending direction of the reinforcing body from the outer surface of the reinforcing body or farther away from the cylindrical body. It has the recessed part recessed in the direction, It is characterized by the above-mentioned.
　第８態様のＥＡ材は、第１ないし第７のいずれか１態様において、各補強体は、少なくとも一部が互いに非平行方向に延在していることを特徴とするものである。 The EA material of the eighth aspect is characterized in that, in any one of the first to seventh aspects, at least a part of each reinforcing body extends in a non-parallel direction.
　第９態様のＥＡ材は、第８態様において、各補強体は、少なくとも一部が前記筒体から離隔するほど互いに離反するように延在していることを特徴とするものである。 The EA material of the ninth aspect is characterized in that, in the eighth aspect, each reinforcing body extends so as to be separated from each other as at least a part is separated from the cylindrical body.
　第１０態様のＥＡ材は、第８態様において、各補強体は、少なくとも一部が、前記筒体から離隔するほど互いに接近するように延在していることを特徴とするものである。 The EA material of the tenth aspect is characterized in that, in the eighth aspect, at least a part of each reinforcing body extends so as to be closer to each other as the distance from the cylindrical body increases.
　第１１態様のＥＡ材は、第１ないし第１０のいずれか１態様において、前記筒体は、その筒軸心線方向の両端側にそれぞれフランジ部が設けられており、前記補強体は該フランジ部に連なっていることを特徴とするものである。 The EA material according to an eleventh aspect according to any one of the first to tenth aspects, wherein the cylindrical body is provided with flange portions on both ends in the cylindrical axis direction, and the reinforcing body is the flange. It is characterized by being connected to the part.
　第１態様のＥＡ材にあっては、取付部内に設けられた補強体が本体部内にまで延在しているので、取付部の付け根付近の強度が高い。このＥＡ材は、補強体が取付部に埋設されるように設けられるため、補強体が本体部から抜けにくく、且つ成形も容易である。 In the EA material of the first aspect, since the reinforcing body provided in the attachment portion extends into the main body portion, the strength near the base of the attachment portion is high. Since the EA material is provided so that the reinforcing body is embedded in the mounting portion, the reinforcing body is difficult to be removed from the main body portion and can be easily molded.
　本発明では、複数の補強体が共通の取付部内から本体部内にまで延在している。これにより、取付部内から本体部内に１枚の補強体のみが埋設された場合に比べて取付部の付け根付近の強度が高い。また、これらの補強体は、共通の筒体に連なっており、これらが一体的にウレタンフォームと結合しているので、各補強体が単独で本体部内に埋設された場合に比べて補強体が本体部内から抜けにくい。 In the present invention, the plurality of reinforcing bodies extend from the common mounting portion to the main body portion. Thereby, compared with the case where only one reinforcement body is embed | buried in the main-body part from the inside of an attaching part, the intensity | strength near the base of an attaching part is high. In addition, these reinforcing bodies are connected to a common cylindrical body, and these are integrally bonded to the urethane foam, so that the reinforcing bodies are compared to the case where each reinforcing body is embedded alone in the main body. It is hard to come off from inside the main body.
　本発明では、補強体同士は、少なくとも各々の一部が互いに離隔している。即ち、少なくともこの離隔した部分においては、補強体同士の間にリブが存在しない。このため、ＥＡ材に人体などが衝突してＥＡ材が押し潰されるときに、補強体同士は両者の間の樹脂発泡体を押し潰すようにして接近移動し易く、ＥＡ材が十分に潰れるようになる。これにより、衝撃エネルギーの吸収量が増大する。 In the present invention, at least some of the reinforcing bodies are separated from each other. That is, at least in the separated portion, there is no rib between the reinforcing bodies. For this reason, when a human body collides with the EA material and the EA material is crushed, the reinforcing bodies easily move closer to each other by crushing the resin foam between them, so that the EA material is sufficiently crushed. become. This increases the amount of impact energy absorbed.
　第２態様の通り、各補強体の互いに離隔した部分同士の間隔を３～１００ｍｍとすることにより、上記の衝撃エネルギー吸収量が十分に高くなる。 As described in the second embodiment, the impact energy absorption amount is sufficiently increased by setting the distance between the separated portions of the reinforcing bodies to 3 to 100 mm.
　本発明では、第３態様の通り、各補強体は、全体が互いに離隔していることが好ましい。このように構成することにより、ＥＡ材が押し潰されるときに、補強体同士が全体的に接近移動するため、上記の衝撃エネルギー吸収量が高くなる。 In the present invention, as in the third aspect, it is preferable that the reinforcing bodies are separated from each other as a whole. By configuring in this way, when the EA material is crushed, the reinforcing bodies generally move closer to each other, so that the impact energy absorption amount becomes higher.
　本発明では、第４態様の通り、各補強体は、各々の筒体と反対側の端部同士が接しているか又は連なっていてもよい。このように構成することにより、補強体の本体部からの抜け止め効果が向上する。 In the present invention, as in the fourth aspect, each reinforcing body may be in contact with or continuous with the ends opposite to the respective cylindrical bodies. By comprising in this way, the removal prevention effect from the main-body part of a reinforcement body improves.
　第５態様のように、補強体の外面に、該補強体の本体部からの抜け出しを阻止する抜け止め形状を設けることにより、補強体が本体部から抜けにくくなる。 As in the fifth aspect, by providing the outer surface of the reinforcing body with a retaining shape that prevents the reinforcing body from coming out of the main body, it becomes difficult for the reinforcing body to come out of the main body.
　この抜け止め形状は、本体部の外面から該補強体の延在方向と略直交方向か又はそれよりも筒体に接近する方向へ突出した凸部（第６態様）や、補強体の外面から該補強体の延在方向と略直交方向か又はそれよりも筒体から離反する方向へ凹陥した凹部（第７態様）により容易に形成することができる。 This retaining shape is formed from a convex portion (sixth aspect) projecting from the outer surface of the main body portion in a direction substantially orthogonal to the extending direction of the reinforcing body or closer to the cylindrical body, or from the outer surface of the reinforcing body. It can be easily formed by a recess (seventh aspect) recessed in a direction substantially orthogonal to the extending direction of the reinforcing body or in a direction farther away from the cylinder.
　第８態様のように、各補強体の少なくとも一部を互いに非平行方向へ延在させることによっても、補強体を本体部から抜けにくくすることができる。 As in the eighth aspect, it is also possible to make it difficult for the reinforcing bodies to come out of the main body by extending at least a part of the reinforcing bodies in the non-parallel direction.
　この場合、補強体同士は、第９態様のように、筒体から離隔するほど互いに離反するように延在していてもよく、第１０態様のように、筒体から離隔するほど互いに接近するように延在していてもよい。 In this case, the reinforcing bodies may extend so as to be separated from each other as they are separated from the cylindrical body as in the ninth aspect, and approach each other as they are separated from the cylindrical body as in the tenth aspect. It may extend as follows.
　なお、第１０態様のように、補強体同士が筒体から離隔するほど互いに接近するように構成すると、補強体と樹脂発泡体表面との距離が大きくなり、両者の一体性が向上する。 In addition, if it comprises so that reinforcement bodies may mutually approach so that it may separate from a cylinder like 10th aspect, the distance of a reinforcement body and the resin foam surface will become large, and both integrity will improve.
　第１１態様の通り、筒体にフランジ部を設けてもよい。この場合、補強体がフランジ部に連なるようにするのが好ましい。 As in the eleventh aspect, the cylindrical body may be provided with a flange portion. In this case, it is preferable that the reinforcing body is connected to the flange portion.
実施の形態に係るＥＡ材の厚み方向の断面図である。It is sectional drawing of the thickness direction of the EA material which concerns on embodiment. 埋設ピースの斜視図である。It is a perspective view of an embedment piece. 埋設ピースの平面図である。It is a top view of an embedment piece. 図３のIV－IV線断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. 補強体の別の構成例を示す斜視図である。It is a perspective view which shows another structural example of a reinforcement body. 補強体の別の構成例を示す斜視図である。It is a perspective view which shows another structural example of a reinforcement body. 補強体の別の構成例を示す斜視図である。It is a perspective view which shows another structural example of a reinforcement body. 補強体の別の構成例を示す斜視図である。It is a perspective view which shows another structural example of a reinforcement body. 補強体の別の構成例を示す斜視図である。It is a perspective view which shows another structural example of a reinforcement body. 補強体の別の構成例を示す斜視図である。It is a perspective view which shows another structural example of a reinforcement body. 図１０のXI－XI線に沿う断面図である。It is sectional drawing which follows the XI-XI line of FIG. 補強体の別の構成例を示す断面図である。It is sectional drawing which shows another structural example of a reinforcement body. 補強体の別の構成例を示す断面図である。It is sectional drawing which shows another structural example of a reinforcement body. 従来例を示す断面図である。It is sectional drawing which shows a prior art example. 図１５ａは別の従来例を示す斜視図、図１５ｂは図１５ａのＢ－Ｂ線断面図である。15a is a perspective view showing another conventional example, and FIG. 15b is a cross-sectional view taken along line BB of FIG. 15a.
詳細な説明Detailed description
　以下、第１図～第４図を参照して実施の形態について説明する。 Hereinafter, embodiments will be described with reference to FIGS. 1 to 4. FIG.
　第１図は実施の形態に係るＥＡ材の厚み方向の断面図、第２図は、このＥＡ材の埋設ピースの斜視図、第３図は埋設ピースの平面図、第４図は第３図のIV－IV線断面図である。 1 is a sectional view in the thickness direction of the EA material according to the embodiment, FIG. 2 is a perspective view of the embedded piece of the EA material, FIG. 3 is a plan view of the embedded piece, and FIG. 4 is FIG. FIG. 4 is a sectional view taken along line IV-IV.
　第１図に示すＥＡ材２０は、それぞれ硬質ウレタンフォームなどの発泡樹脂よりなる盤状の本体部２１と、該本体部２１の側面から張り出す取付部２２とを有する。取付部２２には、このＥＡ材２０をトリム等に取り付けるための取付孔２３が設けられている。この取付部２２内に埋設ピース３０が埋設されている。 The EA material 20 shown in FIG. 1 has a disk-shaped main body portion 21 made of foamed resin such as rigid urethane foam, and an attachment portion 22 projecting from the side surface of the main body portion 21. The attachment portion 22 is provided with an attachment hole 23 for attaching the EA material 20 to a trim or the like. An embedded piece 30 is embedded in the mounting portion 22.
　この埋設ピース３０は、取付孔２３の内周面を構成する筒体３１と、筒体３１の筒軸方向両端に設けられたフランジ部３２，３３と、フランジ部３２，３３に連なる補強体３４，３５とを有する。各補強体３４，３５は、好ましくは厚さが０．１～５ｍｍ程度である。補強体３４，３５は、それぞれ取付部２２から本体部２１内にまで延在している。 The embedded piece 30 includes a cylindrical body 31 that forms the inner peripheral surface of the mounting hole 23, flange portions 32 and 33 provided at both ends of the cylindrical body 31 in the cylinder axial direction, and a reinforcing body 34 that continues to the flange portions 32 and 33. , 35. Each of the reinforcing bodies 34 and 35 preferably has a thickness of about 0.1 to 5 mm. The reinforcing bodies 34 and 35 extend from the attachment portion 22 into the main body portion 21, respectively.
　この実施の形態では、該補強体３４，３５同士は、各々の筒体３１側の末端（以下、基端という。）から本体部２１側の末端（以下、先端という。）まで全体が互いに離隔している。 In this embodiment, the reinforcing bodies 34 and 35 are separated from each other from the end (hereinafter referred to as the base end) on the side of each cylindrical body 31 to the end (hereinafter referred to as the front end) on the main body 21 side. is doing.
　各補強体３４，３５は、筒体３１から離隔するほど相互に接近するようにフランジ部３２，３３に対し若干屈曲するように連なっている。フランジ部３２，３３と補強体３４，３５との交差角度ａは０～４５°程度が好適である。補強体３４，３５の先端同士の間隔ｂは、ウレタンフォームと補強体３４，３５との一体性を高めるために、３ｍｍ以上であることが好ましい。ただし、補強体３４，３５の先端同士の間隔ｂは３ｍｍ以下であってもよく、該補強体３４，３５の先端同士が接していてもよい。一般的に、トリムに取り付けられるＥＡ材の厚みは１００ｍｍ程度なので、補強体３４，３５の先端同士の間隔は１００ｍｍ以下であることが好ましい。また、フランジ部３２，３３の間隔ｃは１００ｍｍ以下特に５～２０ｍｍ程度が好ましい。 The reinforcing bodies 34 and 35 are connected so as to be slightly bent with respect to the flange portions 32 and 33 so as to approach each other as the distance from the cylindrical body 31 increases. The crossing angle a between the flange portions 32 and 33 and the reinforcing members 34 and 35 is preferably about 0 to 45 °. The interval b between the tips of the reinforcing bodies 34 and 35 is preferably 3 mm or more in order to enhance the integrity between the urethane foam and the reinforcing bodies 34 and 35. However, the interval b between the ends of the reinforcing bodies 34 and 35 may be 3 mm or less, and the ends of the reinforcing bodies 34 and 35 may be in contact with each other. Generally, since the thickness of the EA material attached to the trim is about 100 mm, the distance between the tips of the reinforcing bodies 34 and 35 is preferably 100 mm or less. Further, the distance c between the flange portions 32 and 33 is preferably 100 mm or less, particularly about 5 to 20 mm.
　この実施の形態では、補強体３４，３５は、板状のものであり、各々の板面を対面させるように設けられている。各補強体３４，３５には開口３６，３７が設けられている。この実施の形態では、開口３６，３７は、補強体３４，３５の延在方向に延在した長孔となっている。また、この実施の形態では、抜け止め形状として補強体３４，３５の外縁から凸部３４ａ，３５ａが突設されると共に、補強体３４，３５の内縁から凸部３４ｂ，３５ｂが突設されている。各凸部３４ａ，３４ｂ，３５ａ，３５ｂは、補強体３４，３５の長手辺に沿って複数個設けられている。 In this embodiment, the reinforcing bodies 34 and 35 are plate-shaped, and are provided so that the respective plate surfaces face each other. Openings 36 and 37 are provided in the reinforcing bodies 34 and 35, respectively. In this embodiment, the openings 36 and 37 are long holes extending in the extending direction of the reinforcing bodies 34 and 35. In this embodiment, the protrusions 34a and 35a project from the outer edges of the reinforcing bodies 34 and 35, and the protrusions 34b and 35b project from the inner edges of the reinforcement bodies 34 and 35. Yes. A plurality of convex portions 34 a, 34 b, 35 a, 35 b are provided along the longitudinal sides of the reinforcing bodies 34, 35.
　フランジ部３２，３３には、開口３６，３７に臨む箇所に凹部３２ａ，３３ａが設けられている。 The flange portions 32 and 33 are provided with recesses 32a and 33a at locations facing the openings 36 and 37, respectively.
　このＥＡ材２０は、埋設ピース３０を金型（図示略）にセットしておき、キャビティ内にてウレタン原液を発泡させることにより成形される。この場合、補強体３４，３５の全体が金型内に配置され、補強体３４，３５を被包するようにウレタンの発泡成形が行われる。 The EA material 20 is molded by setting the embedded piece 30 in a mold (not shown) and foaming a urethane stock solution in the cavity. In this case, the entire reinforcing bodies 34 and 35 are disposed in the mold, and urethane foam molding is performed so as to encapsulate the reinforcing bodies 34 and 35.
　このように構成されたＥＡ材２０は、前記第１４図と同様にしてトリム等に取り付けられる。即ち、トリム（第1図では図示略）から突設された円柱状の突起が該取付孔２３に内挿されるようにしてＥＡ材２０をトリムに重ね合わせる。この突起は、ポリエチレン、ポリプロピレン等の熱可塑性樹脂よりなる。次いで、突起の先端に溶着治具（図示略）を押し当て、突起の先端を略円盤状に拡径させてフランジ状押え部を形成する。これにより、ＥＡ材２０がトリムに固定される。ただし、スタッドボルト等によってＥＡ材２０をトリムに取り付けることも可能である。 The EA material 20 thus configured is attached to a trim or the like in the same manner as in FIG. That is, the EA material 20 is overlapped on the trim so that the columnar protrusion protruding from the trim (not shown in FIG. 1) is inserted into the mounting hole 23. The protrusion is made of a thermoplastic resin such as polyethylene or polypropylene. Next, a welding jig (not shown) is pressed against the tip of the protrusion, and the tip of the protrusion is expanded in a substantially disk shape to form a flange-like pressing portion. Thereby, the EA material 20 is fixed to the trim. However, it is also possible to attach the EA material 20 to the trim with a stud bolt or the like.
　このＥＡ材２０にあっては、補強体３４，３５が取付部２２から本体部２１内にまで連続して延在しているので、取付部２２の付け根付近（基端側）に応力が集中しても、該付け根付近に亀裂や断裂等は生じない。 In this EA material 20, since the reinforcing bodies 34 and 35 continuously extend from the attachment portion 22 into the main body portion 21, stress is concentrated near the base (base end side) of the attachment portion 22. Even so, no cracks or tears occur near the base.
　このＥＡ材２０にあっては、２枚の補強体３４，３５が共通の取付部２２内から本体部２１内にまで延在している。これにより、取付部２２内から本体部２１内に１枚の補強体のみが埋設された場合に比べて取付部２２の付け根付近の強度が高い。また、これらの補強体３４，３５は、共通の筒体３１に連なっており、これらが一体的にウレタンフォームと結合しているので、各補強体が単独で本体部２１内に埋設された場合に比べて補強体３４，３５が本体部２１内から抜けにくい。 In the EA material 20, the two reinforcing bodies 34 and 35 extend from the common attachment portion 22 to the main body portion 21. Thereby, compared with the case where only one reinforcement body is embed | buried in the main-body part 21 from the inside of the attachment part 22, the intensity | strength near the base of the attachment part 22 is high. Moreover, these reinforcement bodies 34 and 35 are connected to the common cylinder 31, and since these are integrally coupled to the urethane foam, each reinforcement body is embedded in the main body 21 alone. Compared to the above, the reinforcing bodies 34 and 35 are less likely to come out of the main body 21.
　この実施の形態では、補強体３４，３５の基端側には開口３６，３７が設けられている。この開口３６，３７を設けたことにより、補強体３４，３５よりも上側のウレタンフォームと下側のウレタンフォームとが開口３６，３７を介して一体化する。これにより、補強体３４，３５とウレタンフォームとの一体性が向上し、ウレタンフォームからの抜け出しが防止される。 In this embodiment, openings 36 and 37 are provided on the base end sides of the reinforcing bodies 34 and 35. By providing the openings 36 and 37, the urethane foam on the upper side and the urethane foam on the lower side of the reinforcing bodies 34 and 35 are integrated through the openings 36 and 37. Thereby, the integrity of the reinforcing bodies 34 and 35 and the urethane foam is improved, and the escape from the urethane foam is prevented.
　この実施の形態では、補強体３４，３５は筒体３１を介してのみ連なっており、筒体３１以外の箇所では補強体３４，３５間にはウレタンフォームのみが存在する。そのため、人体等がＥＡ材２０に衝突したときに、補強体３４，３５同士が接近するように補強体３４，３５間のウレタンフォームもスムーズに圧縮変形する。この結果、衝撃エネルギーの吸収量が多い。 In this embodiment, the reinforcing bodies 34 and 35 are connected only via the cylinder 31, and only urethane foam exists between the reinforcing bodies 34 and 35 at locations other than the cylinder 31. Therefore, when a human body or the like collides with the EA material 20, the urethane foam between the reinforcing bodies 34 and 35 is also compressed and deformed smoothly so that the reinforcing bodies 34 and 35 approach each other. As a result, the amount of impact energy absorbed is large.
　この実施の形態では、各補強体３４，３５は互いに非平行方向に延在しているので、補強体３４，３５に本体部２１からの抜け出し方向に力が加えられた場合には、少なくとも一方の補強体３４又は３５は必ずこの抜け出し方向と交差方向に延在している。これにより、補強体３４，３５が本体部２１から抜け出しにくいものとなっている。 In this embodiment, the reinforcing bodies 34 and 35 extend in a non-parallel direction, and therefore, when a force is applied to the reinforcing bodies 34 and 35 in the direction of withdrawal from the main body 21, at least one The reinforcing body 34 or 35 always extends in the direction intersecting with the exit direction. Thereby, the reinforcing bodies 34 and 35 are difficult to come out of the main body 21.
　また、この実施の形態では、該補強体３４，３５は、筒体３１から離隔するほど相互に接近しているので、補強体３４，３５がウレタンフォームの内部の深い位置に配置されることになり、ウレタンフォームの被り厚さが大きい。従って、補強体３４，３５とウレタンフォームとの一体性が高い。 In this embodiment, since the reinforcing bodies 34 and 35 are closer to each other as they are separated from the cylindrical body 31, the reinforcing bodies 34 and 35 are disposed at a deep position inside the urethane foam. Therefore, the covering thickness of the urethane foam is large. Therefore, the integrity of the reinforcing bodies 34 and 35 and the urethane foam is high.
　この実施の形態では、補強体３４，３５に抜け止め形状として凸部３４ａ，３５ａを設けているので、補強体３４，３５とウレタンフォームとの一体性が高い。 In this embodiment, since the protruding portions 34a and 35a are provided as the retaining shapes on the reinforcing bodies 34 and 35, the integrity between the reinforcing bodies 34 and 35 and the urethane foam is high.
　なお、フランジ部３２，３３の凹部３２ａ，３３ａは、埋設ピース３０の回り止めの機能を有する。 In addition, the recessed parts 32a and 33a of the flange parts 32 and 33 have a function of preventing rotation of the embedded piece 30.
　また、この実施の形態では、補強体３４，３５は、開口３６，３７の外周囲を取り巻く略Ｕ字形の細幅プレート状となっており、剛性が低い。そのため、ＥＡ材２０が圧縮変形するときにそれに追随して容易に変形する。なお、この実施の形態のように開口３６，３７をフランジ部３２，３３の直近まで設けることにより、フランジ部３２，３３の裏側にもウレタンが回り込み易いものとなる。 Further, in this embodiment, the reinforcing bodies 34 and 35 are substantially U-shaped narrow plates surrounding the outer periphery of the openings 36 and 37 and have low rigidity. Therefore, when the EA material 20 is compressed and deformed, it easily follows and deforms. In addition, by providing the openings 36 and 37 as close as possible to the flange portions 32 and 33 as in this embodiment, the urethane easily goes around to the back side of the flange portions 32 and 33.
［補強体の別の構成］
　第５～１３図を参照して補強体の別の構成例について説明する。第５～１０図はそれぞれ別の構成例に係る補強体を備えた埋設ピース３０Ａ～３０Ｆの斜視図、第１１図は第１０図のXI－XI線に沿う縦断面図、第１２，１３図はさらに別の構成例に係る埋設ピース３０Ｇ，３０Ｈの縦断面図である。 [Another configuration of reinforcement]
Another structural example of the reinforcing body will be described with reference to FIGS. FIGS. 5 to 10 are perspective views of embedded pieces 30A to 30F each having a reinforcing body according to another configuration example, FIG. 11 is a longitudinal sectional view taken along line XI-XI in FIG. 10, and FIGS. These are the longitudinal cross-sectional views of the embedded pieces 30G and 30H which concern on another example of a structure.
　第５図の埋設ピース３０Ａにおいては、筒体３１の両端のフランジ部３２，３３にそれぞれ錨形の補強体４０，４１が連なっている。 In the embedded piece 30A of FIG. 5, the flange-shaped reinforcing bodies 40 and 41 are connected to the flange portions 32 and 33 at both ends of the cylindrical body 31, respectively.
　即ち、この実施の形態では、補強体４０，４１は、それぞれ、フランジ部３２，３３から放射方向、即ち取付部２２内から本体部２１内へ向う方向（第５～１３図では取付部２２及び本体部２１は図示略）へ一直線状に延在した細幅帯状の補強体本体４０ａ，４１ａと、各補強体本体４０ａ，４１ａの先端部からそれぞれ側方へ突出した抜け止め形状としての凸部４０ｂ，４１ｂとを有している。この実施の形態では、各補強体本体４０ａ，４１ａの先端部から互いに反対方向へ１対の凸部４０ｂ，４０ｂ及び４１ｂ，４１ｂが突出している。各凸部４０ｂ，４１ｂは、補強体本体４０ａ，４１ａの延在方向と略直交方向であって且つ筒体３１の筒軸方向と略直交方向となる方向へ突出している。この実施の形態では、各凸部４０ｂ，４１ｂは、それぞれ、先端側ほど筒体３１側となるように湾曲しており、且つ該先端側が尖った鉤状のものとなっている。 That is, in this embodiment, the reinforcing bodies 40 and 41 are respectively provided in the radial direction from the flange portions 32 and 33, that is, in the direction from the inside of the attachment portion 22 to the inside of the main body portion 21 (in FIGS. The main body portion 21 is not shown), and the narrow band-shaped reinforcing body main bodies 40a and 41a extending in a straight line, and the protruding portions as the retaining shapes projecting sideways from the front ends of the reinforcing body main bodies 40a and 41a. 40b, 41b. In this embodiment, a pair of convex portions 40b, 40b and 41b, 41b protrude in the opposite directions from the tip portions of the reinforcing body bodies 40a, 41a. Each convex part 40b, 41b protrudes in a direction that is substantially orthogonal to the extending direction of the reinforcing body bodies 40a, 41a and that is substantially orthogonal to the cylinder axis direction of the cylinder 31. In this embodiment, each convex part 40b, 41b is curved so that the tip side is closer to the cylindrical body 31 side, and has a hook-like shape with a pointed tip side.
　この埋設ピース３０Ａのその他の構成は第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30A are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals indicate the same parts.
　この実施の形態では、補強体４０，４１は錨形となっており、補強体本体４０ａ，４１ａの先端部から両側に突出した鉤状の凸部４０ｂ，４０ｂ及び４１ｂ，４１ｂが本体部２１の内部に食い込んでいるため、補強体４０，４１の抜け止め効果が高い。 In this embodiment, the reinforcing bodies 40 and 41 are bowl-shaped, and the bowl-shaped protrusions 40b and 40b and 41b and 41b projecting from the front ends of the reinforcing body bodies 40a and 41a to the both sides of the body section 21. Since it bites into the inside, the effect of preventing the reinforcing bodies 40 and 41 from coming off is high.
　上記の各実施の形態では、埋設ピース３０，３０Ａにそれぞれ２個の補強体３４，３５又は４０，４１が設けられているが、本発明においては、補強体が３個以上設けられてもよい。 In each of the above-described embodiments, the embedding pieces 30 and 30A are each provided with the two reinforcing bodies 34 and 35 or 40 and 41. However, in the present invention, three or more reinforcing bodies may be provided. .
　第６図の埋設ピース３０Ｂにおいては、計４個の補強体４０Ａ，４０Ｂ，４１Ａ，４１Ｂが設けられている。これらの補強体４０Ａ，４０Ｂ，４１Ａ，４１Ｂは、それぞれ、第５図の埋設ピース３０Ａの補強体４０，４１と同様の錨形となっている。補強体４０Ａ，４０Ｂは、それぞれ、補強体本体４０ａの基端がフランジ部３２に連なり、補強体４１Ａ，４１Ｂは、それぞれ、補強体本体４１ａの基端がフランジ部３３に連なっている。補強体４０Ａ，４０Ｂ同士及び４１Ａ，４１Ｂ同士は、それぞれ、フランジ部３２，３３の周方向に間隔をおいて配置されている。また、これらの補強体本体４０Ａ，４０Ｂ同士及び４１Ａ，４１Ｂ同士は、各々の補強体本体４０ａ，４１ａが互いに略平行方向に延在している。 In the embedded piece 30B of FIG. 6, a total of four reinforcing bodies 40A, 40B, 41A, 41B are provided. These reinforcing bodies 40A, 40B, 41A, 41B are respectively saddle shaped similar to the reinforcing bodies 40, 41 of the embedded piece 30A in FIG. In the reinforcing bodies 40A and 40B, the base end of the reinforcing body 40a is connected to the flange portion 32, and in the reinforcing bodies 41A and 41B, the base end of the reinforcing body 41a is connected to the flange portion 33, respectively. The reinforcing bodies 40A and 40B and 41A and 41B are arranged at intervals in the circumferential direction of the flange portions 32 and 33, respectively. Further, the reinforcing body bodies 40A and 40B and the reinforcing body bodies 41A and 41B extend in a direction substantially parallel to each other.
　この実施の形態では、隣り合う補強体４０Ａ，４０Ｂ同士及び４１Ａ，４１Ｂ同士の間で凸部４０ｂ，４０ｂ同士及び４１ｂ，４１ｂ同士が重ならないように、一方の補強体４０Ａ，４１Ａの補強体本体４０ａ，４１ａの長さを他方の補強体４０Ｂ，４１Ｂの補強体本体４０ａ，４１ａよりも短くしている。 In this embodiment, the reinforcing body main body of one reinforcing body 40A, 41A so that the convex portions 40b, 40b and 41b, 41b do not overlap between the adjacent reinforcing bodies 40A, 40B and 41A, 41B. The length of 40a, 41a is made shorter than the reinforcement body 40a, 41a of the other reinforcement body 40B, 41B.
　この埋設ピース３０Ｂのその他の構成は、第５図の埋設ピース３０Ａと同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30B are the same as those of the embedded piece 30A in FIG. 5, and the same reference numerals indicate the same parts.
　このように補強体の数を増やすことにより、取付部２２の付け根付近の強度を高めることができると共に、補強体の本体部２１からの抜け止め効果も高めることができる。 As described above, by increasing the number of reinforcing bodies, it is possible to increase the strength near the base of the mounting portion 22 and to enhance the effect of preventing the reinforcing body from coming off from the main body portion 21.
　第７図の埋設ピース３０Ｃにおいては、第１～４図の埋設ピース３０と同様、開口３６，３７の外周囲を取り巻く略Ｕ字形の細幅プレート状の補強体３４，３５が設けられている。この実施の形態では、抜け止め形状として、該補強体３４，３５の延在方向の途中部に略円盤状の膨出部４２が設けられている。 The embedded piece 30C shown in FIG. 7 is provided with substantially U-shaped narrow plate-like reinforcing bodies 34 and 35 surrounding the outer periphery of the openings 36 and 37, as in the embedded piece 30 shown in FIGS. . In this embodiment, a substantially disk-shaped bulging portion 42 is provided in the middle of the extending direction of the reinforcing bodies 34 and 35 as a retaining shape.
　膨出部４２は、補強体３４，３５のうち取付部２２内から本体部２１内へ向って延在する各直線状延在部３４ｃ，３５ｃに沿ってそれぞれ間隔をおいて複数個（この実施の形態では３個ずつ。ただし、膨出部４２の個数はこれに限定されない。）設けられている。各膨出部４２は、その軸心線方向を各直線状延在部３４ｃ，３５ｃの延在方向と同方向として配置されている。各膨出部４２は、直径が各直線状延在部３４ａ，３５ａの幅及び厚さよりも大きなものとなっており、各膨出部４２が各直線状延在部３４ｃ，３５ｃの外周囲から全周にわたって放射状に張り出している。 A plurality of the bulging portions 42 are provided at intervals along the respective linearly extending portions 34c and 35c extending from the attachment portion 22 toward the main body portion 21 of the reinforcing bodies 34 and 35 (this embodiment). The number of the bulging portions 42 is not limited to this. Each bulging portion 42 is arranged such that its axial direction is the same as the extending direction of each linearly extending portion 34c, 35c. Each bulging portion 42 has a diameter larger than the width and thickness of each linear extending portion 34a, 35a, and each bulging portion 42 extends from the outer periphery of each linear extending portion 34c, 35c. Projects radially around the entire circumference.
　なお、膨出部４２は円盤形状に限定されるものではなく、その他の形状、例えば三角形や四角形等の多角形状であってもよい。 Note that the bulging portion 42 is not limited to a disk shape, and may be other shapes, for example, a polygonal shape such as a triangle or a quadrangle.
　この埋設ピース３０Ｃのその他の構成は、第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30C are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals denote the same parts.
　この埋設ピース３０Ｃにあっては、膨出部４２が補強体３４，３５の各直線状延在部３４ｃ，３５ｃの外周囲から全周にわたって張り出しているので、各直線状延在部３４ｃ，３５ｃの幅方向にのみ凸部が張り出したものに比べて補強体３４，３５の本体部２１からの抜け止め効果が高い。 In this embedded piece 30C, the bulging portion 42 protrudes from the outer periphery of each linearly extending portion 34c, 35c of the reinforcing bodies 34, 35 over the entire circumference, so that each linearly extending portion 34c, 35c. The effect of preventing the reinforcing bodies 34 and 35 from coming off from the main body 21 is higher than that in which the convex portions protrude only in the width direction.
　上記の各実施の形態では、フランジ部３２に連なる補強体とフランジ部３３に連なる補強体とは、全体が互いに離隔したものとなっているが、本発明においては、これらの補強体が部分的に接しているか又は連なっていてもよい。 In each of the embodiments described above, the reinforcing body connected to the flange portion 32 and the reinforcing body connected to the flange portion 33 are entirely separated from each other. However, in the present invention, these reinforcing bodies are partially provided. May be in contact with or connected to.
　第８図の埋設ピース３０Ｄにおいては、フランジ部３２に２個の補強体４３Ａ，４３Ｂが連なっていると共に、フランジ部３３にも２個の補強体４４Ａ，４４Ｂが連なっている。補強体４３Ａ，４３Ｂ同士及び４４Ａ，４４Ｂ同士は、それぞれフランジ部３２，３３の周方向に間隔をおいて配置されている。また、これらの補強体４３Ａ，４３Ｂ，４４Ａ，４４Ｂは、互いに略平行方向に延在している。 In the embedded piece 30D shown in FIG. 8, two reinforcing bodies 43A and 43B are connected to the flange portion 32, and two reinforcing bodies 44A and 44B are connected to the flange portion 33. The reinforcing bodies 43A and 43B and 44A and 44B are arranged at intervals in the circumferential direction of the flange portions 32 and 33, respectively. Further, these reinforcing bodies 43A, 43B, 44A, 44B extend in a substantially parallel direction.
　この実施の形態では、筒部３１の軸心線方向に対向する補強体４３Ａ，４４Ａの先端部同士並びに補強体４３Ｂ，４４Ｂの先端部同士がそれぞれ連結片４５によって連結されている。この実施の形態では、該連結片４５は薄膜状のものとなっている。この連結片４５は、各補強体４３Ａ，４４Ｂ，４４Ａ，４４Ｂと一体に形成されている。この連結片４５の厚みは０．０５～０．５ｍｍであることが好ましい。 In this embodiment, the tip portions of the reinforcing bodies 43A and 44A and the tip portions of the reinforcing bodies 43B and 44B facing each other in the axial direction of the cylindrical portion 31 are connected by the connecting piece 45, respectively. In this embodiment, the connecting piece 45 is a thin film. The connecting piece 45 is formed integrally with each reinforcing body 43A, 44B, 44A, 44B. The thickness of the connecting piece 45 is preferably 0.05 to 0.5 mm.
　この埋設ピース３０Ｄのその他の構成は、第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30D are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals indicate the same parts.
　この埋設ピース３０Ｄにあっては、補強体４３Ａ，４４Ａの先端部同士並びに補強体４３Ｂ，４４Ｂの先端部同士がそれぞれ連結片４５によって連結されている。そのため、補強体４３Ａ，４３Ｂ，４４Ａ，４４Ｂに本体部２１からの抜け出し方向に力が加えられても、これらの補強体４３Ａ，４４Ａ同士の間並びに補強体４３Ｂ，４４Ｂ同士の間のウレタンフォームによって連結片４５の該抜け出し方向への移動が阻止されるので、補強体４３Ａ，４３Ｂ，４４Ａ，４４Ｂの本体部２１からの抜け止め効果が高い。 In the embedded piece 30D, the distal ends of the reinforcing bodies 43A and 44A and the distal ends of the reinforcing bodies 43B and 44B are connected by a connecting piece 45, respectively. Therefore, even if a force is applied to the reinforcing bodies 43A, 43B, 44A, and 44B in the direction of coming out from the main body 21, the urethane foam between the reinforcing bodies 43A and 44A and between the reinforcing bodies 43B and 44B. Since the movement of the connecting piece 45 in the removal direction is prevented, the effect of preventing the reinforcement bodies 43A, 43B, 44A, 44B from coming off from the main body 21 is high.
　第９図の埋設ピース３０Ｅは、第１～４図の埋設ピース３０から抜け止め形状としての凸部３４ａ，３４ｂ，３５ａ，３５ｂを省略したものである。 The embedded piece 30E in FIG. 9 is obtained by omitting the protrusions 34a, 34b, 35a, and 35b as retaining shapes from the embedded piece 30 in FIGS.
　この埋設ピース３０Ｅのその他の構成は第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30E are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals indicate the same parts.
　この埋設ピース３０Ｅにあっては、凸部３４ａ，３４ｂ，３５ａ，３５ｂによる抜け止め効果以外は、第１～４図の埋設ピース３０と同様の作用効果が奏される。 In the embedded piece 30E, the same operational effects as the embedded piece 30 shown in FIGS. 1 to 4 are exhibited except for the retaining effect by the convex portions 34a, 34b, 35a, and 35b.
　第１０，１１図の埋設ピース３０Ｆにおいては、一方の補強体３４の先端側が他方の補強体３５の開口３７内に入り込んでいる。 In the embedded piece 30F shown in FIGS. 10 and 11, the front end side of one reinforcing body 34 enters the opening 37 of the other reinforcing body 35.
　なお、この埋設ピース３０Ｆにおいても、抜け止め形状としての凸部３４ａ，３４ｂ，３５ａ，３５ｂは省略されている。 In this embedded piece 30F, the protrusions 34a, 34b, 35a, and 35b as a retaining shape are omitted.
　この埋設ピース３０Ｆのその他の構成は第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30F are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals indicate the same parts.
　この埋設ピース３０Ｆにあっては、補強体３４の先端側が補強体３５の開口３７内に入り込んでいるので、補強体３４，３５同士の間のウレタンフォームが該補強体３４，３５の先端部同士の間を通って該補強体３４，３５同士の間から抜け出しにくい。そのため、補強体３４，３５に本体部２１からの抜け出し方向に力が加えられても、該補強体３４，３５同士の間のウレタンフォームによってこれらの該抜け出し方向への移動が阻止されるので、補強体３４，３５の本体部２１からの抜け止め効果が高い。 In the embedded piece 30F, since the distal end side of the reinforcing body 34 enters the opening 37 of the reinforcing body 35, the urethane foam between the reinforcing bodies 34 and 35 is located between the distal ends of the reinforcing bodies 34 and 35. It is difficult to escape from between the reinforcing bodies 34 and 35 through the gap. Therefore, even if a force is applied to the reinforcing bodies 34, 35 in the direction of withdrawal from the main body 21, the urethane foam between the reinforcing bodies 34, 35 prevents the movement in the direction of withdrawal, The effect of preventing the reinforcing bodies 34 and 35 from coming off from the main body 21 is high.
　また、このように一方の補強体３４を他方の補強体３５の開口３７に入り込ませることにより、本体部２１の厚みに比して補強体３４，３５の厚みが大きい場合でも、補強体３４，３５を本体部２１の内部の深い位置に配置することができる。 Further, by inserting one reinforcing body 34 into the opening 37 of the other reinforcing body 35 in this way, even when the thickness of the reinforcing bodies 34, 35 is larger than the thickness of the main body portion 21, the reinforcing body 34, 35 can be disposed deep inside the main body 21.
　前述の第１～４図の埋設ピース３０においては、補強体３４，３５の先端部同士が離隔しているが、本発明においては、第１２図の埋設ピース３０Ｇのように、補強体３４，３５の先端部同士が接していてもよい。 In the embedded piece 30 shown in FIGS. 1 to 4, the tip portions of the reinforcing bodies 34 and 35 are separated from each other. However, in the present invention, as in the embedded piece 30G in FIG. The tip portions of 35 may be in contact with each other.
　この埋設ピース３０Ｆのその他の構成は第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30F are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals indicate the same parts.
　このように補強体３４，３５の先端部同士が接していることにより、補強体３４，３５同士の間のウレタンフォームが該補強体３４，３５の先端部同士の間を通って該補強体３４，３５同士の間から抜け出しにくいため、補強体３４，３５に本体部２１からの抜け出し方向に力が加えられても、該補強体３４，３５同士の間のウレタンフォームによってこれらの該抜け出し方向への移動が阻止されるので、補強体３４，３５の本体部２１からの抜け止め効果が高い。 Thus, since the front ends of the reinforcing bodies 34 and 35 are in contact with each other, the urethane foam between the reinforcing bodies 34 and 35 passes between the front ends of the reinforcing bodies 34 and 35 and the reinforcing body 34. , 35, it is difficult for the reinforcing bodies 34, 35 to come out from each other, so that even if a force is applied to the reinforcing bodies 34, 35 in the direction from the main body 21, the urethane foam between the reinforcing bodies 34, 35 moves in these directions. Therefore, the effect of preventing the reinforcement bodies 34 and 35 from coming off from the main body portion 21 is high.
　上記の第１～４図の実施の形態では、補強体３４，３５は、筒体３１から離隔するほど互いに接近するように延在しているが、本発明においては、第１３図の埋設ピース３０Ｈのように、補強体３４，３５は、筒体３１から離隔するほど互いに離反するように延在していてもよい。 In the embodiment shown in FIGS. 1 to 4, the reinforcing bodies 34 and 35 extend so as to be closer to each other as they are separated from the cylindrical body 31, but in the present invention, the embedded piece shown in FIG. Like 30H, the reinforcing bodies 34 and 35 may extend so as to be separated from each other as the distance from the cylindrical body 31 increases.
　この埋設ピース３０Ｈのその他の構成は第１～４図の埋設ピース３０と同様であり、同一符号は同一部分を示している。 Other configurations of the embedded piece 30H are the same as those of the embedded piece 30 shown in FIGS. 1 to 4, and the same reference numerals indicate the same parts.
　このように補強体３４，３５を筒体３１から離隔するほど互いに離反するように延在させた場合にも、補強体３４，３５に本体部２１からの抜け出し方向に力が加えられたときに、少なくとも一方の補強体３４又は３５は必ずこの抜け出し方向と交差方向に延在しているので、補強体３４，３５が本体部２１から抜け出しにくい。 Even when the reinforcing bodies 34 and 35 are extended so as to be separated from each other as they are separated from the cylindrical body 31, when force is applied to the reinforcing bodies 34 and 35 in the direction of withdrawal from the main body 21. Since at least one of the reinforcing bodies 34 or 35 always extends in a direction intersecting with the pulling-out direction, the reinforcing bodies 34 and 35 are difficult to slip out from the main body 21.
　上記実施の形態は本発明の一例であり、本発明は図示以外の形態をもとりうる。例えば、補強体３４，３５は細幅板状である代わりに紐状などの線状とされてもよい。 The above embodiment is an example of the present invention, and the present invention may take forms other than those shown in the drawings. For example, the reinforcing bodies 34 and 35 may be formed in a linear shape such as a string instead of a narrow plate shape.
　上記実施の形態では、補強体３４，３５は全体として互いに接近する構成又は互いに離反する構成となっているが、補強体３４，３５の延在方向の先端側は略平行となっていてもよい。 In the said embodiment, although the reinforcement bodies 34 and 35 are the structures which mutually approach or separate from each other as a whole, the front end side of the extension direction of the reinforcement bodies 34 and 35 may be substantially parallel. .
　上記実施の形態では、補強体３４，３５に抜け止め形状として凸部３４ａ，３４ｂ，３５ａ，３５ｂを設けているが、凹部を設けてもよい。凸部や凹部は、補強体の内周縁及び外周縁の一方にのみ設けられてもよい。補強体３４，３５の開口３６，３７を省略してもよい。 In the above embodiment, the protrusions 34a, 34b, 35a, 35b are provided as the retaining shapes on the reinforcing bodies 34, 35, but a recess may be provided. The convex portion and the concave portion may be provided only on one of the inner peripheral edge and the outer peripheral edge of the reinforcing body. The openings 36 and 37 of the reinforcing bodies 34 and 35 may be omitted.
　本発明のＥＡ材は、ウレタン以外の樹脂にて成形されてもよい。本発明のＥＡ材は、トリム以外の部材に取り付けられてもよい。 EA material of the present invention may be formed of a resin other than urethane. The EA material of the present invention may be attached to a member other than the trim.
　なお、本出願は、２００８年７月７日付で出願された日本特許出願（特願２００８－１７７００８）に基づいており、その全体が引用により援用される。 Note that this application is based on a Japanese patent application filed on July 7, 2008 (Japanese Patent Application No. 2008-177008), which is incorporated by reference in its entirety.

Claims (11)

  1. 　一体に成形された樹脂発泡体よりなる本体部及び該本体部の側面から突出する取付部を有するＥＡ材であって、
    　該取付部に取付孔が貫通しており、
    　該取付孔の内周面の少なくとも一部を構成するように筒体が該取付部に設置されているＥＡ材において、
    　該筒体に連なり、前記本体部内にまで延在した複数の補強体が設けられており、
    　各補強体は、少なくとも一部が互いに離隔していることを特徴とするＥＡ材。     An EA material having a main body portion made of a resin foam molded integrally and a mounting portion protruding from a side surface of the main body portion,
    A mounting hole passes through the mounting portion,
    In the EA material in which the cylinder is installed in the mounting portion so as to constitute at least a part of the inner peripheral surface of the mounting hole,
    A plurality of reinforcing bodies extending to the inside of the main body portion are provided to the cylindrical body,
    Each reinforcing body is at least partially separated from each other, and is an EA material.
  2. 　請求項１において、各補強体の互いに離隔した部分同士の間隔は３～１００ｍｍであることを特徴とするＥＡ材。 2. The EA material according to claim 1, wherein an interval between the portions of the reinforcing members that are separated from each other is 3 to 100 mm.
  3. 　請求項１又は２において、各補強体は、全体が互いに離隔していることを特徴とするＥＡ材。 3. The EA material according to claim 1, wherein the reinforcing bodies are separated from each other as a whole.
  4. 　請求項１又は２において、各補強体は、各々の前記筒体と反対側の端部同士が接しているか又は連なっていることを特徴とするＥＡ材。 3. The EA material according to claim 1 or 2, wherein each reinforcing body is in contact with or connected to the end portions on the opposite side of each cylindrical body.
  5. 　請求項１ないし４のいずれか１項において、補強体の外面に、該補強体の前記本体部からの抜け出しを阻止する抜け止め形状が設けられていることを特徴とするＥＡ材。 5. The EA material according to claim 1, wherein an outer surface of the reinforcing body is provided with a retaining shape that prevents the reinforcing body from coming out of the main body.
  6. 　請求項５において、該抜け止め形状は、補強体の外面から該補強体の前記延在方向と略直交方向か又はそれよりも前記筒体に接近する方向へ突出した凸部を有することを特徴とするＥＡ材。 6. The retaining shape according to claim 5, wherein the retaining shape has a protrusion protruding from an outer surface of the reinforcing body in a direction substantially orthogonal to the extending direction of the reinforcing body or in a direction closer to the cylindrical body. EA material.
  7. 　請求項５又は６において、該抜け止め形状は、補強体の外面から該補強体の前記延在方向と略直交方向か又はそれよりも前記筒体から離反する方向へ凹陥した凹部を有することを特徴とするＥＡ材。 7. The retaining shape according to claim 5, wherein the retaining shape has a recess recessed from an outer surface of the reinforcing body in a direction substantially orthogonal to the extending direction of the reinforcing body or in a direction farther away from the cylindrical body. Characteristic EA material.
  8. 　請求項１ないし７のいずれか１項において、各補強体は、少なくとも一部が互いに非平行方向に延在していることを特徴とするＥＡ材。 8. The EA material according to any one of claims 1 to 7, wherein at least a part of each reinforcing body extends in a non-parallel direction.
  9. 　請求項８において、各補強体は、少なくとも一部が前記筒体から離隔するほど互いに離反するように延在していることを特徴とするＥＡ材。 9. The EA material according to claim 8, wherein each reinforcing body extends so that at least a part thereof is separated from the cylindrical body.
  10. 　請求項８において、各補強体は、少なくとも一部が、前記筒体から離隔するほど互いに接近するように延在していることを特徴とするＥＡ材。 9. The EA material according to claim 8, wherein at least a part of each reinforcing body extends so as to approach each other as the distance from the cylindrical body increases.
  11. 　請求項１ないし１０のいずれか１項において、前記筒体は、その筒軸心線方向の両端側にそれぞれフランジ部が設けられており、前記補強体は該フランジ部に連なっていることを特徴とするＥＡ材。 11. The cylinder according to claim 1, wherein the cylindrical body is provided with flange portions at both ends in the cylindrical axis direction, and the reinforcing body is continuous with the flange portion. EA material.
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JP2004150629A (en) * 2002-10-10 2004-05-27 Bridgestone Corp Ea material mounting structure
JP2006022898A (en) * 2004-07-08 2006-01-26 Bridgestone Corp Ea material and its mounting structure
JP2007162733A (en) * 2005-12-09 2007-06-28 Daiwa Kasei Ind Co Ltd Cushion member and its forming method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5261631U (en) * 1975-10-30 1977-05-06
JP2002168210A (en) * 2000-11-30 2002-06-14 Seiji Kageyama Article fixing structure onto wall face of gypsum board and the like
JP2004150629A (en) * 2002-10-10 2004-05-27 Bridgestone Corp Ea material mounting structure
JP2006022898A (en) * 2004-07-08 2006-01-26 Bridgestone Corp Ea material and its mounting structure
JP2007162733A (en) * 2005-12-09 2007-06-28 Daiwa Kasei Ind Co Ltd Cushion member and its forming method

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