WO2008065817A1 - Foam filling tool of hollow structure - Google Patents

Foam filling tool of hollow structure Download PDF

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Publication number
WO2008065817A1
WO2008065817A1 PCT/JP2007/069946 JP2007069946W WO2008065817A1 WO 2008065817 A1 WO2008065817 A1 WO 2008065817A1 JP 2007069946 W JP2007069946 W JP 2007069946W WO 2008065817 A1 WO2008065817 A1 WO 2008065817A1
Authority
WO
WIPO (PCT)
Prior art keywords
base material
foamable
peripheral wall
outer peripheral
peripheral surface
Prior art date
Application number
PCT/JP2007/069946
Other languages
French (fr)
Japanese (ja)
Inventor
Syozi Muto
Susumu Nishimoto
Yoshihiro Takabatake
Eisuke Kasugai
Original Assignee
Kyowa Sangyo Co., Ltd.
Shinwa Seiko Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyowa Sangyo Co., Ltd., Shinwa Seiko Co., Ltd. filed Critical Kyowa Sangyo Co., Ltd.
Priority to JP2008546906A priority Critical patent/JPWO2008065817A1/en
Publication of WO2008065817A1 publication Critical patent/WO2008065817A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/18—Filling preformed cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B62D29/002—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material a foamable synthetic material or metal being added in situ

Definitions

  • the present invention relates to a foam filling device for a hollow structure.
  • a hollow chamber of a hollow structure such as a hollow panel of a vehicle body (for example, a pillar, a rocker panel, a roof side panel, etc.) configured with a hollow box-shaped closed section by a plurality of panels is filled and blocked.
  • the present invention relates to a foam filling device for a hollow structure.
  • a foam filling tool for a hollow structure has a foamable base material made of a material that foams by external heating, and a support member that supports the foamable base material at a required position of the hollow chamber of the hollow structure. Yes.
  • the foamable base material is formed into an annular shape in advance according to the outer peripheral shape of the support member, and is attached to the support member in that shape (see Japanese Patent Application Laid-Open No. 2006-1472). Therefore, it was necessary to prepare a foamable base material for each shape of the support member. This improved product is also known in the past.
  • a foam filling device in which a foamable base material is extruded and formed in a straight line, and the foamable base material is deformed and held along the peripheral wall portion formed on the outer peripheral portion of the support member is also known in the past. (See Special Table 2004-533959). If the peripheral wall of the support member has a tight curve, the foamable base material may not be bent sufficiently. For this reason, there is a problem that the foamable base material becomes longer than necessary than the length of the peripheral wall portion, or the filling density after foaming becomes uneven.
  • an object of the present invention is to provide a foam filling tool for a hollow structure including a foamable base material that can flexibly follow the shape of a support member.
  • the foamable substrate of the present invention has a plurality of cuts that are formed in a straight long shape and extend in a direction substantially perpendicular to the long direction.
  • the support member has a peripheral wall portion standing in the vicinity of the outer peripheral portion and a holding portion formed on the outer peripheral side of the peripheral wall portion. And outside the wall A foamable base material is elastically deformed using a notch on the peripheral surface, and elastic return is restricted by the holding portion.
  • the foamable base material can flexibly follow the peripheral wall portion of the support member by a plurality of cuts. Therefore, it is necessary to use the force S to control that the foamable base material becomes longer than necessary in the tightly curved part of the peripheral wall, or that the packing density after foaming is greatly uneven.
  • the incision can be formed by cutting from the inner peripheral surface of the foamable base material facing the peripheral wall portion or the opposite outer peripheral surface toward the center of the foamable base material shaft.
  • the width can be gradually reduced from the peripheral surface or the outer peripheral surface toward the axis center. Therefore, the foamable substrate can be deformed along the peripheral wall portion more efficiently than in the case where a cut is formed on the other surface.
  • the width of the cutting force and the depth of cut gradually decreases toward the center of the shaft. For this reason, the foamable base material is configured to be easily bent not only in the direction in which the cut becomes wider but also in the direction in which the cut becomes narrower.
  • the incision can be formed by cutting from both the inner peripheral surface of the foamable substrate facing the peripheral wall portion of the support member and the opposite outer peripheral surface toward the center of the foamable substrate axis.
  • the force S can be made to have a positional relationship in which the notch on the inner peripheral surface side and the notch on the outer peripheral surface side are shifted in the longitudinal direction of the foamable substrate. Therefore, the distance force between the apexes of the inner peripheral surface side and the outer peripheral surface side is longer than that provided in a position where the inner peripheral surface side and the outer peripheral surface side are not shifted from each other. Therefore, the foamable base material has become difficult to cut.
  • the support member extends from the peripheral wall portion toward the outer periphery, and the support member extends from the peripheral wall portion in parallel with the peripheral protrusion portion to prevent the foaming base material from falling off from the peripheral protrusion portion side.
  • a drop-off prevention part is a cantilevered and elastically deformable beam part, and a claw part that is formed at the tip of the beam part and hooks on the foamable substrate. You may have. With this configuration, the foamable base material can be prevented from falling off from the peripheral overhanging portion by the dropout prevention portion.
  • the foamable substrate can be reliably and easily held on the support member because the claw portion is hung while the beam portion is elastically deformed.
  • FIG. 1 is a front view of a foam filler and a cross-sectional view of a hollow panel.
  • FIG. 2 is a cross-sectional view taken along line II-II in FIG.
  • FIG. 3 is a front view of the foamable substrate.
  • FIG. 4 is a front view of a foamable substrate according to Embodiment 2.
  • FIG. 5 is a front view of a foamable substrate according to Embodiment 3.
  • FIG. 6 is a front view of a foam filler according to a fourth embodiment.
  • FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG.
  • FIG. 8 is a partially enlarged view of FIG. 7 showing a state where the foamable base material is attached to the support member.
  • FIG. 9 is a partial perspective view of a support member according to Embodiment 5.
  • FIG. 10 is a front view of a holding unit according to the fifth embodiment.
  • FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG.
  • FIG. 12 is a partial perspective view of a support member according to Embodiment 6.
  • FIG. 13 is a cross-sectional view taken along line XIII—XIII in FIG.
  • FIG. 14 is a partial perspective view of a support member according to Embodiment 7.
  • FIG. 15 is a partial front view of the foam filler according to the eighth embodiment.
  • FIG. 16 is a cross-sectional view taken along line XVI—XVI in FIG.
  • a hollow panel (hollow structure) 9 shown in FIG. 1 is a pillar, a rocker panel, a roof panel or the like of a vehicle body.
  • the hollow panel 9 has a hollow box-shaped closed section by spot welding the inner panel 9a and the outer panel 9b at the flange portion.
  • a mounting hole 9al is provided at a predetermined position of the inner panel 9a, and the clip 2f of the foam filler 1 is engaged with the mounting hole 9al.
  • the foam filler 1 is a member that exhibits a sound insulation function by filling the hollow chamber 9c of the hollow panel 9, and includes a support member 2 and a foamable substrate 3 as shown in FIGS. ing.
  • the support member 2 has a shape slightly smaller than the cross-sectional shape of the hollow panel 9, and is disposed at a position substantially orthogonal to the longitudinal direction of the hollow chamber 9c.
  • the support member 2 includes a first part 2p and a second part 2q, and a bridging part 2r that bridges the first part 2p and the second part 2q.
  • the first part 2p and the second part 2q are disposed on the main body 2a and the outer periphery of the main body 2a.
  • the peripheral wall portion 2b is erected, and the peripheral projecting portion 2c is projected from the tip edge of the peripheral wall portion 2b to the inner peripheral wall surface of the hollow chamber 9c.
  • the peripheral wall portion 2b forms a predetermined gap (for example, about 5 mm) facing the inner peripheral wall surface.
  • the base end portion of the peripheral wall portion 2b is provided with a plurality of dropout prevention portions 2e that extend in parallel with the peripheral overhang portion 2c.
  • a foamable base material 3 is installed between the drop-off prevention part 2e and the circumferential overhanging part 2c, and the foamable base material 3 may fall off from the support member 2 in the longitudinal direction of the hollow chamber 9c by the drop-off prevention part 2e. Is prevented.
  • a plurality of holding portions 2d are formed in a projecting shape on the circumferentially projecting portion 2c.
  • the holding portion 2d is formed on the outer peripheral side of the peripheral wall portion 2b in order to restrict elastic return of the foamable base material 3 elastically deformed along the outer peripheral surface of the peripheral wall portion 2b. Therefore, the foamable substrate 3 is held at a position along the outer peripheral side of the peripheral wall portion 2b by the holding portion 2d.
  • the support member 2 is formed by injection molding or the like of a hard synthetic resin material (for example, 66 nylon) having heat resistance. As shown in FIGS. 1 and 2, the support member 2 integrally has a clip 2f. The clip 2f is inserted into the mounting hole 9al of the hollow panel 9 and is elastically engaged around the hole of the mounting hole 9al. Match.
  • a hard synthetic resin material for example, 66 nylon
  • the foamable base material 3 is formed of a foamable material, for example, a thermoplastic resin material such as EVA (ethylene butyl alcohol) or EMA (ethylene monomethyl acrylate copolymer resin), a foaming agent, and a crosslinking agent. It is foamed by the heat of the baking finish on the vehicle body (for example, 110 ° C to; temperature around 190 ° C).
  • a thermoplastic resin material such as EVA (ethylene butyl alcohol) or EMA (ethylene monomethyl acrylate copolymer resin)
  • EMA ethylene monomethyl acrylate copolymer resin
  • the foamable substrate 3 is injection-molded into a long shape, for example, a straight long shape having a square cross section, as shown in FIG.
  • a plurality of cuts 3a and 3b are formed.
  • the cuts 3a and 3b are cut from one side surface of the foamable substrate 3 and its opposite surface toward the axis center. Therefore, the cuts 3a and 3b extend in a direction substantially orthogonal to the longitudinal direction.
  • the widths of the cuts 3a and 3b are gradually narrowed from one side surface or the opposite surface toward the center of the shaft, and are formed in a triangular cross section.
  • a plurality of pleat portions 3c, 3d are formed by the cuts 3a, 3b.
  • a core wire portion 3 e extending in the longitudinal direction is formed between the pleat portions 3 c and 3 d.
  • the foamable substrate 3 is elastically deformed along the peripheral wall 2b of the first part 2p, the bridging part 2r, and the peripheral wall 2b of the second part 2q of the support member 2.
  • the support member 2 is disposed.
  • the cuts 3a and 3b of the foamable base material 3 are disposed at the inner peripheral surface position facing the outer peripheral surface of the peripheral wall portion 2b and at the opposite outer peripheral surface position. Therefore, the foamable substrate 3 is easily elastically deformed using the cuts 3a and 3b.
  • the pleats 3c at the inner peripheral surface position are configured to avoid interference by the cuts 3a and 2b.
  • the foamable substrate 3 has a configuration in which only the core portion 3e having a narrower width than the entire width is elastically deformed, and can be elastically deformed flexibly.
  • the foam filler 1 is attached to the hollow panel 9 so that the support member 2 is substantially perpendicular to the longitudinal direction of the hollow chamber 9c, as shown in FIGS.
  • the foamable base material 3 is foamed by the heat of the baking coating on the vehicle body, and the foaming direction is regulated by the peripheral wall portion 2b and the peripheral overhang portion 2c at the time of foaming. Therefore, the foamable base material 3 efficiently foams toward the inner peripheral wall surface of the hollow chamber 9c, and fills the space between the peripheral wall portion 2b and the inner peripheral wall surface of the hollow chamber 9c. As a result, the hollow chamber 9c is blocked by the foamable base material 3 and the main body 2a of the support member 2.
  • the foamable substrate 3 has a plurality of cuts 3a and 3b that are formed in a straight long shape as shown in FIG. 3 and extend in a direction substantially orthogonal to the long direction.
  • the support member 2 has a peripheral wall portion 2b standing near the outer peripheral portion, and a holding portion 2d formed on the outer peripheral side of the peripheral wall portion 2b.
  • the foamable base material 3 is arranged on the outer peripheral surface of the peripheral wall portion 2b while being elastically deformed using the cuts 3a and 3b, and the elastic return is restricted by the holding portion 2d.
  • the foamable substrate 3 can flexibly follow the peripheral wall portion of the support member by the plurality of cuts 3a and 3b. Therefore, it is possible to suppress the fact that the foamable base material 3 becomes longer than necessary at the tight part of the curve of the peripheral wall portion 2b or that the packing density after foaming is greatly uneven.
  • the cuts 3a and 3b are directed from the inner peripheral surface of the foamable base material 3 facing the peripheral wall portion 2b as shown in FIGS. 1 and 3 or from the opposite outer peripheral surface toward the center of the foamable base material 3 axis.
  • the width is gradually reduced from the inner or outer peripheral surface toward the center of the shaft.
  • the foamed base material 3 can be efficiently deformed along the peripheral wall portion 2b as compared with the case where the cut is formed on the other surface.
  • the widths of the cuts 3a and 3b are gradually narrowing toward the axis center. Therefore, the foamable substrate 3 is not only narrow in the direction in which the incisions 3a and 3b are widened, but also narrow It is the structure which is easy to bend also in the direction.
  • a second embodiment will be described with reference to FIG.
  • the second embodiment is different from the first embodiment in that it has a foamable base material 4 shown in FIG. 4 instead of the foamable base material 3 shown in FIG. ing.
  • the second embodiment will be described focusing on the differences.
  • the foamable substrate 4 is extruded into, for example, a square cross section and a linear long shape.
  • a plurality of cuts 4a and 4b are formed.
  • the cuts 4a and 4b are cut from the one side surface (inner peripheral surface) of the foamable substrate 4 and the opposite surface (outer surface) to the axial center. Therefore, the cuts 4a and 4b extend in a direction substantially orthogonal to the longitudinal direction.
  • the widths of the cuts 4a and 4b are substantially constant from one side surface or the opposite surface toward the center of the axis, and are formed in a square cross section.
  • a plurality of pleats 4c, 4d are formed by the cuts 4a, 4b. Between the pleat portions 4c and 4d, a core wire portion 4e extending in the longitudinal direction is formed.
  • Embodiment 3 will be described with reference to FIG.
  • the third embodiment is different from the first embodiment in that it has a foamable substrate 5 shown in FIG. 5 instead of the foamable substrate 3 shown in FIG. ing.
  • the third embodiment will be described focusing on the differences.
  • the foamable substrate 5 is extruded, for example, in a rectangular cross section and in a linear long shape.
  • a plurality of cuts 5a and 5b are formed.
  • the cuts 5a and 5b are cut from the one side surface (inner peripheral surface) of the foamable base material 5 and the opposite surface (outer surface) thereof to the center of the shaft, and extend in a direction substantially orthogonal to the longitudinal direction.
  • the widths of the cuts 5a and 5b are gradually narrowed from one side surface or the opposite surface toward the center of the axis, and are formed in a triangular cross section.
  • a plurality of pleats 5c, 5d are formed by the cuts 5a, 5b.
  • a core wire portion 5e extending in the longitudinal direction is formed between the pleat portions 5c and 5d.
  • the cuts 5a and 5b are shifted in the longitudinal direction of the foamable substrate 5, and the apexes of the cuts 5a and 5b are shifted in the longitudinal direction.
  • the interval between cuts 5a or between cuts 5b It is shifted by a distance of 1/4 or more and 1/2 or less of the interval.
  • Embodiment 3 is formed as described above. That is, the incisions 5a and 5b are cut toward the center of the axis of the foamable substrate 5 on both sides of the inner peripheral surface of the foamable base material 5 facing the peripheral wall portion 2b of the support member 2 and the opposite outer peripheral surface. (See Figs. 1 and 5).
  • the notch 5a on the inner peripheral surface side and the notch 5b on the outer peripheral surface side are in a positional relationship shifted in the longitudinal direction of the foamable substrate 5. Therefore, the distance 5f between the vertices of the notches 5a and 5b on the inner peripheral surface side and the outer peripheral surface side is longer than that of the not-shifted shape as in the notches 3a and 3b shown in FIG. Therefore, the foamable substrate 5 is difficult to cut.
  • Embodiment 4 will be described with reference to FIGS.
  • the fourth embodiment is different from the first embodiment in that it has a support member 7 shown in FIGS. 6 to 8 instead of the support member 2 shown in FIG. Yes.
  • the fourth embodiment will be described focusing on the differences.
  • the support member 7 includes a main body portion 7a, a peripheral wall portion 7b erected on the outer peripheral portion of the main body portion 7a, and a peripheral portion projecting outward from the tip edge of the peripheral wall portion 7b. It has an overhang 7c.
  • the base end portion of the peripheral wall portion 7b is provided with a plurality of dropout prevention portions 7e that extend in parallel with the peripheral overhang portion 7c and prevent the foamable base material 3 from falling off.
  • a penetrating portion 7cl is formed in the region of the circumferential overhanging portion 7c corresponding to the dropout preventing portion 7e. Therefore, the drop-off prevention part 7e is easily formed by the through part 7c 1.
  • a holding portion 7d is erected on the outer peripheral edge of the circumferentially extending portion 7c.
  • the holding part 7d is provided on the entire outer peripheral edge of the circumferential overhanging part 7c, and the foamable base material 3 is fitted between the holding part 7d and the peripheral wall part 7b while being elastically deformed from the outside. Then, the elastic return of the foamable substrate 3 is regulated by the holding portion 7d, and the foamable substrate 3 is held by the support member 7.
  • the support member 7 has a peripheral wall portion 7b in the vicinity of the outer peripheral portion, a holding portion 7d on the outer peripheral side of the peripheral wall portion 7b, and a configuration that restricts elastic return of the foamable base material 3 by the holding portion 7d.
  • a clip 7f is formed on a part of the support member 7 into a body.
  • the fifth embodiment will be described with reference to FIGS.
  • the fifth embodiment is different from the first embodiment.
  • the holding force 8 formed in substantially the same manner, the holding part 2d shown in FIGS. 1 and 2 and the drop-off prevention part 2e are replaced with the holding part 8a and the drop-off prevention part 8b shown in FIG. Is different.
  • the fifth embodiment will be described focusing on the differences.
  • the holding portion 8a has a beam portion 8al and a claw portion 8a2 as shown in FIGS.
  • the beam portion 8al has a cantilever-like shape and can be elastically deformed by a pair of cuts 8c provided in the circumferentially projecting portion 2c.
  • the claw portion 8a2 is formed at the tip of the beam portion 8al, protrudes toward the foamable base material 3 and hangs on the foamable base material 3, and preferably enters the notch 3b of the foamable base material 3 to enter the core wire portion 3e. It takes.
  • the fall prevention part 8b is projected from the peripheral wall part 2b in parallel with the circumferential projecting part 2c to prevent the foamable substrate 3 from coming off from the circumferential projecting part 2c side.
  • the support member 2 has a circumferential overhanging portion 2c and a dropout preventing portion 8b.
  • the holding portion 8a formed on the circumferentially projecting portion 2c is a cantilevered and elastically deformable beam portion 8al, and a claw portion that is formed at the tip of the beam portion 8al and hooks on the foamable substrate 3. 8a2. Therefore, the foamable base material 3 can be prevented from falling off from the extended portion 2c side by the dropout preventing portion 8b.
  • the foamable base material 3 can be securely and easily held by the support member 2 because the claw portion 8a2 is hooked while the beam portion 8al is elastically deformed.
  • the sixth embodiment will be described with reference to FIGS.
  • the force S formed in substantially the same manner as in the first embodiment is supported by the drop-off prevention portion 8d shown in FIGS. 12 and 13 instead of the holding portion 2d and the drop-off prevention portion 2e shown in FIGS. It differs in that it is formed on member 2.
  • the sixth embodiment will be described focusing on the differences.
  • the drop-off preventing portion 8d extends from the peripheral wall portion 2b in parallel with the peripheral overhang portion 2c.
  • the drop-off prevention portion 8d has a beam portion 8dl that is cantilevered and elastically deformable, and a claw portion (holding portion) 8d2 formed at the tip of the beam portion 8dl.
  • the claw portion 8d2 protrudes toward the foamable base material 3 and is hooked on the foamable base material 3, and preferably enters the notch 3b of the foamable base material 3 and hits the core wire portion 3e. Accordingly, the claw portion (holding portion) 8d2 regulates the elastic return of the foamable base material 3.
  • a hole 8e having a shape corresponding to the drop-off preventing portion 8d is formed in the circumferential protrusion 2c.
  • Embodiment 7 will be described with reference to FIG.
  • the seventh embodiment is different from the sixth embodiment in that it has a protrusion (holding portion) 8f in addition to the configuration of the sixth embodiment.
  • the protrusion 8f protrudes from both side positions of the hole 8e toward the drop-off preventing portion 8d and is hooked on the foamable base material 3, and preferably enters the cut 3b of the foamable base material 3 and hits the core wire portion 3e. Accordingly, the protrusion (holding portion) 8f regulates the elastic return of the foamable substrate 3.
  • the eighth embodiment will be described with reference to FIGS.
  • the force formed in substantially the same manner as in the first embodiment, in which the holding member 8g shown in FIGS. 15 and 16 is formed on the support member 2 in place of the holding member 2d shown in FIGS. are different.
  • the holding part 8g has a pin shape as shown in FIGS. 15 and 16, and protrudes from the circumferentially projecting part 2c toward the foamable substrate 3 side. Then, the holding portion 8g enters the cut 3b of the foamable base material 3 and regulates the elastic return of the foamable base material 3.
  • the present invention is not limited to the embodiments;! To 8, and may be the following embodiments.
  • the foamable substrates according to! To 8 have a square cross section and have cuts on the inner peripheral surface side facing the peripheral wall portion and on the opposite outer peripheral surface side. However, only the inner peripheral surface side or only the outer peripheral surface side, a form having notches only on other side surfaces, a form having notches on a plurality of side surfaces, a form having notches on the entire circumference, etc. .
  • the foamable substrate according to Embodiments 8 to 8 has a quadrangular cross-section, it may have other cross-sectional shapes, for example, a cross-sectional shape such as a circle, an ellipse, or a polygon. good.
  • the support members according to Embodiments 1 to 8 had drop-off prevention portions. However, it has a drop-off prevention part.
  • the support members according to Embodiments 1 to 8 partially had dropout prevention portions. However, it is possible to have a drop-off prevention part on the entire outer periphery of the support member.

Abstract

A foam filling tool (1) of a hollow structure (9) comprises a foam base material (3) and a support member (2). The foam base material (3) is formed in a linearly elongated shape and has cut parts (3a, 3b) extending in the direction generally orthogonal to the longitudinal direction. The support member (2) has peripheral wall parts (2b) formed upright near its outer peripheral part and holding parts (2d) formed on the outer peripheral side farer than the peripheral wall parts (2b). The foam base material (3) is elastically deformed and disposed on the outer peripheral surfaces of the peripheral wall parts (2b) while utilizing the cut parts (3a, 3b), and its elasticity restoration is restrained by the holding parts (2d).

Description

明 細 書  Specification
中空構造物の発泡充填具  Hollow structure foam filler
技術分野  Technical field
[0001] 本発明は、中空構造物の発泡充填具に関する。とりわけ複数枚のパネルによって 中空の箱形閉じ断面に構成された車両ボディの中空パネル (例えば、ピラー、ロッカ 一パネル、ルーフサイドパネル等）のような中空構造物の中空室を充填して遮断する 中空構造物の発泡充填具に関する。  [0001] The present invention relates to a foam filling device for a hollow structure. In particular, a hollow chamber of a hollow structure such as a hollow panel of a vehicle body (for example, a pillar, a rocker panel, a roof side panel, etc.) configured with a hollow box-shaped closed section by a plurality of panels is filled and blocked. The present invention relates to a foam filling device for a hollow structure.
背景技術  Background art
[0002] 中空構造物の発泡充填具は、外部加熱によって発泡する材料よりなる発泡性基材 と、その発泡性基材を中空構造物の中空室の所要位置に支持する支持部材を有し ている。一般に発泡性基材は、支持部材の外周形状に合わせて予め環状に成形さ れており、その形状のまま支持部材に取付けられる（特開 2006— 1472号公報参照 )。そのため支持部材の形状毎に発泡性基材を準備する必要があった。この改良品 も従来知られている。例えば、発泡性基材を直線状に押出し成形し、その発泡性基 材を支持部材の外周部に形成された周壁部に沿って変形させて保持する発泡充填 具も従来知られてレ、る (特表 2004— 533959号公報参照）。し力も支持部材の周壁 部にカーブのきつい部分があると、発泡性基材を十分に曲げることができない場合 がある。そのため発泡性基材が周壁部の長さに比べて必要以上に長くなつたり、発 泡後の充填密度にむらが出たりする問題があった。  A foam filling tool for a hollow structure has a foamable base material made of a material that foams by external heating, and a support member that supports the foamable base material at a required position of the hollow chamber of the hollow structure. Yes. In general, the foamable base material is formed into an annular shape in advance according to the outer peripheral shape of the support member, and is attached to the support member in that shape (see Japanese Patent Application Laid-Open No. 2006-1472). Therefore, it was necessary to prepare a foamable base material for each shape of the support member. This improved product is also known in the past. For example, a foam filling device in which a foamable base material is extruded and formed in a straight line, and the foamable base material is deformed and held along the peripheral wall portion formed on the outer peripheral portion of the support member is also known in the past. (See Special Table 2004-533959). If the peripheral wall of the support member has a tight curve, the foamable base material may not be bent sufficiently. For this reason, there is a problem that the foamable base material becomes longer than necessary than the length of the peripheral wall portion, or the filling density after foaming becomes uneven.
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0003] そこで本発明は、支持部材の形状に柔軟に追従できる発泡性基材を備える中空構 造物の発泡充填具を提供することを課題とする。 Accordingly, an object of the present invention is to provide a foam filling tool for a hollow structure including a foamable base material that can flexibly follow the shape of a support member.
課題を解決するための手段  Means for solving the problem
[0004] 本発明の発泡性基材は、直線長尺状に形成され、かつ長尺方向に略直交する方 向に延出する切込みを複数有している。支持部材は、外周部近傍に立設する周壁 部と、その周壁部よりも外周側に形成される保持部を有している。そして周壁部の外 周面に発泡性基材が切込みを利用しつつ弾性変形されて配設され、保持部によつ て弾性戻りが規制される構成になっている。 [0004] The foamable substrate of the present invention has a plurality of cuts that are formed in a straight long shape and extend in a direction substantially perpendicular to the long direction. The support member has a peripheral wall portion standing in the vicinity of the outer peripheral portion and a holding portion formed on the outer peripheral side of the peripheral wall portion. And outside the wall A foamable base material is elastically deformed using a notch on the peripheral surface, and elastic return is restricted by the holding portion.
[0005] したがって発泡性基材は、複数の切込みによって支持部材の周壁部に柔軟に追 従して沿うこと力できる。したがって周壁部のカーブのきつい部分において、発泡性 基材が必要以上に長くなつたり、発泡後の充填密度に大きなむらが生じたりすること を才卬制すること力 Sでさる。  [0005] Therefore, the foamable base material can flexibly follow the peripheral wall portion of the support member by a plurality of cuts. Therefore, it is necessary to use the force S to control that the foamable base material becomes longer than necessary in the tightly curved part of the peripheral wall, or that the packing density after foaming is greatly uneven.
[0006] また切込みは、周壁部に対向する発泡性基材の内周面、あるいはその反対の外周 面から発泡性基材軸中心に向けて切込まれて形成することが可能で、かつ内周面ま たは外周面から軸中心に向けて除々に幅が狭くすることが可能である。したがって発 泡性基材は、他の面に切込みを形成した場合に比べて、効率良く周壁部に沿って変 形され得る。し力、も切込みの幅が軸中心に向けて除々に狭くなつている。そのため発 泡性基材は、切込みが広くなる方向のみならず、狭くなる方向にも曲げられやすい構 成になっている。  [0006] The incision can be formed by cutting from the inner peripheral surface of the foamable base material facing the peripheral wall portion or the opposite outer peripheral surface toward the center of the foamable base material shaft. The width can be gradually reduced from the peripheral surface or the outer peripheral surface toward the axis center. Therefore, the foamable substrate can be deformed along the peripheral wall portion more efficiently than in the case where a cut is formed on the other surface. However, the width of the cutting force and the depth of cut gradually decreases toward the center of the shaft. For this reason, the foamable base material is configured to be easily bent not only in the direction in which the cut becomes wider but also in the direction in which the cut becomes narrower.
[0007] さらに切込みは、支持部材の周壁部に対向する発泡性基材の内周面と、その反対 の外周面の両面から発泡性基材軸中心に向けて切込まれて形成され得る。し力、も内 周面側の切込みと外周面側の切込みとが発泡性基材の長手方向にずれた位置関 係にすること力 Sできる。したがって内周面側と外周面側の切込みの頂点間距離力 内 周面側と外周面側の切込みをずらしていない位置に設けた形態よりも長くなつている 。そのため発泡性基材は、切れ難くなつている。  [0007] Further, the incision can be formed by cutting from both the inner peripheral surface of the foamable substrate facing the peripheral wall portion of the support member and the opposite outer peripheral surface toward the center of the foamable substrate axis. The force S can be made to have a positional relationship in which the notch on the inner peripheral surface side and the notch on the outer peripheral surface side are shifted in the longitudinal direction of the foamable substrate. Therefore, the distance force between the apexes of the inner peripheral surface side and the outer peripheral surface side is longer than that provided in a position where the inner peripheral surface side and the outer peripheral surface side are not shifted from each other. Therefore, the foamable base material has become difficult to cut.
[0008] また支持部材は、周壁部から外周に向けて張出す周張出部と、周張出部と平行に 周壁部から張出して発泡性基材の周張出部側からの脱落を防止する脱落防止部と を有していても良い。そして周張出部に形成された保持部または脱落防止部は、片 持ち梁状でかつ弾性変形可能な梁部と、梁部の先端に形成されかつ発泡性基材に 掛カ、る爪部を有していても良い。この構成によって発泡性基材は、脱落防止部によつ て周張出部側からの脱落が防止され得る。そして発泡性基材は、梁部を弾性変形さ せつつ爪部が掛けられるために確実かつ容易に支持部材に保持され得る。  [0008] In addition, the support member extends from the peripheral wall portion toward the outer periphery, and the support member extends from the peripheral wall portion in parallel with the peripheral protrusion portion to prevent the foaming base material from falling off from the peripheral protrusion portion side. And a drop-off prevention part. And the holding part or drop-off prevention part formed on the peripheral overhanging part is a cantilevered and elastically deformable beam part, and a claw part that is formed at the tip of the beam part and hooks on the foamable substrate. You may have. With this configuration, the foamable base material can be prevented from falling off from the peripheral overhanging portion by the dropout prevention portion. The foamable substrate can be reliably and easily held on the support member because the claw portion is hung while the beam portion is elastically deformed.
図面の簡単な説明  Brief Description of Drawings
[0009] [図 1]発泡充填具の正面図と、中空パネルの断面図である。 [図 2]図 1の II一 II線断面矢視図である。 FIG. 1 is a front view of a foam filler and a cross-sectional view of a hollow panel. FIG. 2 is a cross-sectional view taken along line II-II in FIG.
[図 3]発泡性基材の正面図である。  FIG. 3 is a front view of the foamable substrate.
[図 4]実施の形態 2の発泡性基材の正面図である。  FIG. 4 is a front view of a foamable substrate according to Embodiment 2.
[図 5]実施の形態 3の発泡性基材の正面図である。  FIG. 5 is a front view of a foamable substrate according to Embodiment 3.
[図 6]実施の形態 4の発泡充填具の正面図である。  FIG. 6 is a front view of a foam filler according to a fourth embodiment.
[図 7]図 6の VII— VII線断面矢視図である。  7 is a cross-sectional view taken along the line VII-VII in FIG.
[図 8]発泡性基材を支持部材に取付ける様子を示す図 7の一部拡大図である。  FIG. 8 is a partially enlarged view of FIG. 7 showing a state where the foamable base material is attached to the support member.
[図 9]実施の形態 5に係る支持部材の一部斜視図である。  FIG. 9 is a partial perspective view of a support member according to Embodiment 5.
[図 10]実施の形態 5の保持部の正面図である。  FIG. 10 is a front view of a holding unit according to the fifth embodiment.
[図 11]図 10の XI— XI線断面矢視図である。  FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG.
[図 12]実施の形態 6に係る支持部材の一部斜視図である。  FIG. 12 is a partial perspective view of a support member according to Embodiment 6.
[図 13]図 12の XIII— XIII線断面矢視図である。  FIG. 13 is a cross-sectional view taken along line XIII—XIII in FIG.
[図 14]実施の形態 7に係る支持部材の一部斜視図である。  FIG. 14 is a partial perspective view of a support member according to Embodiment 7.
[図 15]実施の形態 8に係る発泡充填具の一部正面図である。  FIG. 15 is a partial front view of the foam filler according to the eighth embodiment.
[図 16]図 15の XVI— XVI線断面矢視図である。  FIG. 16 is a cross-sectional view taken along line XVI—XVI in FIG.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0010] (実施の形態 1)  [0010] (Embodiment 1)
実施の形態 1を図 1〜3にしたがって説明する。図 1に示す中空パネル（中空構造 物） 9は、車両ボディのピラー、ロッカーパネル、ルーフパネル等である。中空パネル 9は、インナパネル 9aとァウタパネル 9bをフランジ部においてスポット溶接し、中空の 箱形閉じ断面に構成される。インナパネル 9aの所定位置には、取付孔 9alが貫設さ れ、取付孔 9alに発泡充填具 1のクリップ 2fが係合される。  Embodiment 1 will be described with reference to FIGS. A hollow panel (hollow structure) 9 shown in FIG. 1 is a pillar, a rocker panel, a roof panel or the like of a vehicle body. The hollow panel 9 has a hollow box-shaped closed section by spot welding the inner panel 9a and the outer panel 9b at the flange portion. A mounting hole 9al is provided at a predetermined position of the inner panel 9a, and the clip 2f of the foam filler 1 is engaged with the mounting hole 9al.
[0011] 発泡充填具 1は、中空パネル 9の中空室 9cを充填することで遮音機能を奏する部 材であって、図 1 , 2に示すように支持部材 2と発泡性基材 3を備えている。支持部材 2は、中空パネル 9の断面形状よりも一周り小さい形状を有しており、中空室 9cの長 手方向に略直交した位置に配設される。支持部材 2は、第一部 2pと第二部 2qと、第 一部 2pと第二部 2qとを架橋する架橋部 2rを有している。  The foam filler 1 is a member that exhibits a sound insulation function by filling the hollow chamber 9c of the hollow panel 9, and includes a support member 2 and a foamable substrate 3 as shown in FIGS. ing. The support member 2 has a shape slightly smaller than the cross-sectional shape of the hollow panel 9, and is disposed at a position substantially orthogonal to the longitudinal direction of the hollow chamber 9c. The support member 2 includes a first part 2p and a second part 2q, and a bridging part 2r that bridges the first part 2p and the second part 2q.
[0012] 第一部 2pと第二部 2qは、図 1 , 2に示すように本体部 2aと、本体部 2aの外周部に 立設する周壁部 2bと、周壁部 2bの先端縁から中空室 9cの内周壁面に張出す周張 出部 2cを有している。周壁部 2bは、支持部材 2が中空室 9cに配設された際に、内周 壁面と対向して所定 (例えば 5mm程度）の隙間を形成する。周壁部 2bの基端部に は、周張出部 2cと平行に張出す脱落防止部 2eが複数設けられている。脱落防止部 2eと周張出部 2cの間には、発泡性基材 3が設置され、発泡性基材 3は、脱落防止部 2eによって支持部材 2から中空室 9c長手方向に脱落することが防止される。 [0012] As shown in FIGS. 1 and 2, the first part 2p and the second part 2q are disposed on the main body 2a and the outer periphery of the main body 2a. The peripheral wall portion 2b is erected, and the peripheral projecting portion 2c is projected from the tip edge of the peripheral wall portion 2b to the inner peripheral wall surface of the hollow chamber 9c. When the support member 2 is disposed in the hollow chamber 9c, the peripheral wall portion 2b forms a predetermined gap (for example, about 5 mm) facing the inner peripheral wall surface. The base end portion of the peripheral wall portion 2b is provided with a plurality of dropout prevention portions 2e that extend in parallel with the peripheral overhang portion 2c. A foamable base material 3 is installed between the drop-off prevention part 2e and the circumferential overhanging part 2c, and the foamable base material 3 may fall off from the support member 2 in the longitudinal direction of the hollow chamber 9c by the drop-off prevention part 2e. Is prevented.
[0013] 周張出部 2cには、図 1 , 2に示すように複数の保持部 2dが突出状に形成されてい る。保持部 2dは、周壁部 2bの外周面に沿って弾性変形させた発泡性基材 3の弾性 戻りを規制するために周壁部 2bよりも外周側に形成されている。そのため発泡性基 材 3は、保持部 2dによって周壁部 2bの外周側に沿った位置で保持される。  [0013] As shown in Figs. 1 and 2, a plurality of holding portions 2d are formed in a projecting shape on the circumferentially projecting portion 2c. The holding portion 2d is formed on the outer peripheral side of the peripheral wall portion 2b in order to restrict elastic return of the foamable base material 3 elastically deformed along the outer peripheral surface of the peripheral wall portion 2b. Therefore, the foamable substrate 3 is held at a position along the outer peripheral side of the peripheral wall portion 2b by the holding portion 2d.
[0014] 支持部材 2は、耐熱性を有する硬質合成樹脂材料 (例えば、 66ナイロン)を射出成 形等することにより成形されている。図 1 , 2に示すように支持部材 2は、クリップ 2fを 一体に有しており、クリップ 2fは、中空パネル 9の取付孔 9alに揷入され、取付孔 9al の孔周りに弾性的に係合する。  [0014] The support member 2 is formed by injection molding or the like of a hard synthetic resin material (for example, 66 nylon) having heat resistance. As shown in FIGS. 1 and 2, the support member 2 integrally has a clip 2f. The clip 2f is inserted into the mounting hole 9al of the hollow panel 9 and is elastically engaged around the hole of the mounting hole 9al. Match.
[0015] 発泡性基材 3は、発泡性材料、例えば EVA (エチレンビュルアルコール）または E MA (エチレン一メチルアタリレート共重合樹脂）などの熱可塑性樹脂材料と発泡剤と 架橋剤などにより形成されており、車両ボディの焼き付け塗装の熱 (例えば、 110°C 〜； 190°C前後の温度）によって発泡する。  [0015] The foamable base material 3 is formed of a foamable material, for example, a thermoplastic resin material such as EVA (ethylene butyl alcohol) or EMA (ethylene monomethyl acrylate copolymer resin), a foaming agent, and a crosslinking agent. It is foamed by the heat of the baking finish on the vehicle body (for example, 110 ° C to; temperature around 190 ° C).
[0016] 発泡性基材 3は、先ず図 3に示すように長尺状、例えば断面四角形の直線長尺状 に射出成形される。そして射出後に複数の切込み 3a, 3bが形成される。切込み 3a, 3bは、発泡性基材 3の一側面とその反対面から軸中心に向けて切込まれる。そのた め切込み 3a, 3bは、長尺方向に略直交する方向に延出している。切込み 3a, 3bの 幅は、一側面または反対面から軸中心に向けて除々に幅が狭くなつており、断面三 角形状に形成されている。発泡性基材 3の両側部には、切込み 3a, 3bによって複数 のひだ部 3c, 3dが形成される。ひだ部 3c, 3d間には、長手方向に延出する芯線部 3 eが形成される。  [0016] First, the foamable substrate 3 is injection-molded into a long shape, for example, a straight long shape having a square cross section, as shown in FIG. After the injection, a plurality of cuts 3a and 3b are formed. The cuts 3a and 3b are cut from one side surface of the foamable substrate 3 and its opposite surface toward the axis center. Therefore, the cuts 3a and 3b extend in a direction substantially orthogonal to the longitudinal direction. The widths of the cuts 3a and 3b are gradually narrowed from one side surface or the opposite surface toward the center of the shaft, and are formed in a triangular cross section. On both sides of the foamable substrate 3, a plurality of pleat portions 3c, 3d are formed by the cuts 3a, 3b. A core wire portion 3 e extending in the longitudinal direction is formed between the pleat portions 3 c and 3 d.
[0017] 発泡性基材 3は、図 1に示すように支持部材 2の第一部 2pの周壁部 2bと、架橋部 2 rと、第二部 2qの周壁部 2bに沿って弾性変形されつつ、支持部材 2に配設される。 発泡性基材 3の切込み 3a, 3bは、周壁部 2bの外周面に対向する内周面位置と、そ の反対の外周面位置に配設される。そのため発泡性基材 3は、切込み 3a, 3bを利用 しつつ弾性変形されやすい。内周面位置のひだ部 3c同士は、切込み 3a, 2bによつ て干渉が避けられる構成になっている。発泡性基材 3は、全体の幅よりも幅の狭い芯 線部 3eのみが弾性変形する構成であって、柔軟に弾性変形され得る構成になって いる。 [0017] As shown in FIG. 1, the foamable substrate 3 is elastically deformed along the peripheral wall 2b of the first part 2p, the bridging part 2r, and the peripheral wall 2b of the second part 2q of the support member 2. However, the support member 2 is disposed. The cuts 3a and 3b of the foamable base material 3 are disposed at the inner peripheral surface position facing the outer peripheral surface of the peripheral wall portion 2b and at the opposite outer peripheral surface position. Therefore, the foamable substrate 3 is easily elastically deformed using the cuts 3a and 3b. The pleats 3c at the inner peripheral surface position are configured to avoid interference by the cuts 3a and 2b. The foamable substrate 3 has a configuration in which only the core portion 3e having a narrower width than the entire width is elastically deformed, and can be elastically deformed flexibly.
[0018] 発泡充填具 1は、図 1 , 2に示すように支持部材 2が中空室 9cの長手方向に略直交 するように中空パネル 9に取付けられる。発泡性基材 3は、車両ボディの焼き付け塗 装の熱によって発泡し、発泡時に、周壁部 2bと周張出部 2cによって発泡方向が規 制される。そのため発泡性基材 3は、効率良く中空室 9cの内周壁面に向けて発泡し て、周壁部 2bと中空室 9cの内周壁面との間を充填する。これにより中空室 9cは、発 泡した発泡性基材 3と支持部材 2の本体部 2aとによって遮断される。  The foam filler 1 is attached to the hollow panel 9 so that the support member 2 is substantially perpendicular to the longitudinal direction of the hollow chamber 9c, as shown in FIGS. The foamable base material 3 is foamed by the heat of the baking coating on the vehicle body, and the foaming direction is regulated by the peripheral wall portion 2b and the peripheral overhang portion 2c at the time of foaming. Therefore, the foamable base material 3 efficiently foams toward the inner peripheral wall surface of the hollow chamber 9c, and fills the space between the peripheral wall portion 2b and the inner peripheral wall surface of the hollow chamber 9c. As a result, the hollow chamber 9c is blocked by the foamable base material 3 and the main body 2a of the support member 2.
[0019] 以上のようにして実施の形態 1が形成されている。すなわち発泡性基材 3は、図 3に 示すように直線長尺状に形成され、かつ長尺方向に略直交する方向に延出する切 込み 3a, 3bを複数有している。支持部材 2は、図 1に示すように外周部近傍に立設 する周壁部 2bと、その周壁部 2bよりも外周側に形成される保持部 2dを有している。 そして周壁部 2bの外周面に発泡性基材 3が切込み 3a, 3bを利用しつつ弾性変形さ れて配設され、保持部 2dによって弾性戻りが規制される構成になっている。  The first embodiment is formed as described above. That is, the foamable substrate 3 has a plurality of cuts 3a and 3b that are formed in a straight long shape as shown in FIG. 3 and extend in a direction substantially orthogonal to the long direction. As shown in FIG. 1, the support member 2 has a peripheral wall portion 2b standing near the outer peripheral portion, and a holding portion 2d formed on the outer peripheral side of the peripheral wall portion 2b. The foamable base material 3 is arranged on the outer peripheral surface of the peripheral wall portion 2b while being elastically deformed using the cuts 3a and 3b, and the elastic return is restricted by the holding portion 2d.
[0020] したがって発泡性基材 3は、複数の切込み 3a, 3bによって支持部材の周壁部に柔 軟に追従して沿うことができる。したがって周壁部 2bのカーブのきつい部分において 、発泡性基材 3が必要以上に長くなつたり、発泡後の充填密度に大きなむらが生じた りすることを ί卬制すること力 Sできる。  [0020] Accordingly, the foamable substrate 3 can flexibly follow the peripheral wall portion of the support member by the plurality of cuts 3a and 3b. Therefore, it is possible to suppress the fact that the foamable base material 3 becomes longer than necessary at the tight part of the curve of the peripheral wall portion 2b or that the packing density after foaming is greatly uneven.
[0021] また切込み 3a, 3bは、図 1 , 3に示すように周壁部 2bに対向する発泡性基材 3の内 周面、あるいはその反対の外周面から発泡性基材 3軸中心に向けて切込まれて形成 され、かつ内周面または外周面から軸中心に向けて除々に幅が狭くなつている。した 力 Sつて発泡性基材 3は、他の面に切込みを形成した場合に比べて、効率良く周壁部 2bに沿って変形され得る。しかも切込み 3a, 3bの幅が軸中心に向けて除々に狭くな つている。そのため発泡性基材 3は、切込み 3a, 3bが広くなる方向のみならず、狭く なる方向にも曲げられやすい構成になっている。 The cuts 3a and 3b are directed from the inner peripheral surface of the foamable base material 3 facing the peripheral wall portion 2b as shown in FIGS. 1 and 3 or from the opposite outer peripheral surface toward the center of the foamable base material 3 axis. The width is gradually reduced from the inner or outer peripheral surface toward the center of the shaft. The foamed base material 3 can be efficiently deformed along the peripheral wall portion 2b as compared with the case where the cut is formed on the other surface. Moreover, the widths of the cuts 3a and 3b are gradually narrowing toward the axis center. Therefore, the foamable substrate 3 is not only narrow in the direction in which the incisions 3a and 3b are widened, but also narrow It is the structure which is easy to bend also in the direction.
[0022] (実施の形態 2) [0022] (Embodiment 2)
実施の形態 2を図 4にしたがって説明する。実施の形態 2は、実施の形態 1とほぼ同 様に形成されている力 図 3に示す発泡性基材 3に代えて図 4に示す発泡性基材 4を 有している点において相違している。以下、相違点を中心に実施の形態 2について 説明する。  A second embodiment will be described with reference to FIG. The second embodiment is different from the first embodiment in that it has a foamable base material 4 shown in FIG. 4 instead of the foamable base material 3 shown in FIG. ing. Hereinafter, the second embodiment will be described focusing on the differences.
[0023] 発泡性基材 4は、図 4に示すように例えば断面四角形でかつ直線長尺状に押出成 形される。そして押出後に複数の切込み 4a, 4bが形成される。切込み 4a, 4bは、発 泡性基材 4の一側面（内周面）と、その反対面（外側面）から軸中心に切込まれる。そ のため切込み 4a, 4bは、長尺方向に略直交する方向に延出している。切込み 4a, 4 bの幅は、一側面または反対面から軸中心に向けてほぼ一定で、断面四角形状に形 成されている。発泡性基材 4の両側部には、切込み 4a, 4bによって複数のひだ部 4c , 4dが形成される。ひだ部 4c, 4dの間には、長手方向に延出する芯線部 4eが形成 される。  [0023] As shown in FIG. 4, the foamable substrate 4 is extruded into, for example, a square cross section and a linear long shape. After the extrusion, a plurality of cuts 4a and 4b are formed. The cuts 4a and 4b are cut from the one side surface (inner peripheral surface) of the foamable substrate 4 and the opposite surface (outer surface) to the axial center. Therefore, the cuts 4a and 4b extend in a direction substantially orthogonal to the longitudinal direction. The widths of the cuts 4a and 4b are substantially constant from one side surface or the opposite surface toward the center of the axis, and are formed in a square cross section. On both sides of the foamable substrate 4, a plurality of pleats 4c, 4d are formed by the cuts 4a, 4b. Between the pleat portions 4c and 4d, a core wire portion 4e extending in the longitudinal direction is formed.
[0024] (実施の形態 3)  [Embodiment 3]
実施の形態 3を図 5にしたがって説明する。実施の形態 3は、実施の形態 1とほぼ同 様に形成されている力 図 3に示す発泡性基材 3に代えて図 5に示す発泡性基材 5を 有している点において相違している。以下、相違点を中心に実施の形態 3について 説明する。  Embodiment 3 will be described with reference to FIG. The third embodiment is different from the first embodiment in that it has a foamable substrate 5 shown in FIG. 5 instead of the foamable substrate 3 shown in FIG. ing. Hereinafter, the third embodiment will be described focusing on the differences.
[0025] 発泡性基材 5は、図 5に示すように例えば断面四角形でかつ直線長尺状に押出成 形される。そして押出後に複数の切込み 5a, 5bが形成される。切込み 5a, 5bは、発 泡性基材 5の一側面（内周面）とその反対面（外側面）から軸中心に切込まれ、長尺 方向に略直交する方向に延出している。切込み 5a, 5bの幅は、一側面または反対 面から軸中心に向けて除々に狭くなつており、断面三角形状に形成されている。  [0025] As shown in FIG. 5, the foamable substrate 5 is extruded, for example, in a rectangular cross section and in a linear long shape. After the extrusion, a plurality of cuts 5a and 5b are formed. The cuts 5a and 5b are cut from the one side surface (inner peripheral surface) of the foamable base material 5 and the opposite surface (outer surface) thereof to the center of the shaft, and extend in a direction substantially orthogonal to the longitudinal direction. The widths of the cuts 5a and 5b are gradually narrowed from one side surface or the opposite surface toward the center of the axis, and are formed in a triangular cross section.
[0026] 発泡性基材 5の両側部には、切込み 5a, 5bによって複数のひだ部 5c, 5dが形成さ れる。ひだ部 5c, 5d間には、長手方向に延出する芯線部 5eが形成される。切込み 5 a, 5bは、発泡性基材 5の長手方向にずれた位置になっており、切込み 5a, 5bの頂 点が長手方向にずれている。例えば切込み 5a同士の間隔または切込み 5b同士の 間隔の 1/4以上、 1/2以下の距離だけずれている。 [0026] On both sides of the foamable substrate 5, a plurality of pleats 5c, 5d are formed by the cuts 5a, 5b. A core wire portion 5e extending in the longitudinal direction is formed between the pleat portions 5c and 5d. The cuts 5a and 5b are shifted in the longitudinal direction of the foamable substrate 5, and the apexes of the cuts 5a and 5b are shifted in the longitudinal direction. For example, the interval between cuts 5a or between cuts 5b It is shifted by a distance of 1/4 or more and 1/2 or less of the interval.
[0027] 以上のようにして実施の形態 3が形成されている。すなわち切込み 5a, 5bは、支持 部材 2の周壁部 2bに対向する発泡性基材 5の内周面と、その反対の外周面の両面 力 発泡性基材 5軸中心に向けて切込まれて形成されている（図 1 , 5参照）。しかも 内周面側の切込み 5aと外周面側の切込み 5bとが発泡性基材 5の長手方向にずれ た位置関係になっている。したがって内周面側と外周面側の切込み 5a, 5bの頂点間 距離 5fが、図 3に示す切込み 3a, 3bのように長手方向にずれていない形態よりも長 くなつている。そのため発泡性基材 5は、切れ難くなつている。  [0027] Embodiment 3 is formed as described above. That is, the incisions 5a and 5b are cut toward the center of the axis of the foamable substrate 5 on both sides of the inner peripheral surface of the foamable base material 5 facing the peripheral wall portion 2b of the support member 2 and the opposite outer peripheral surface. (See Figs. 1 and 5). In addition, the notch 5a on the inner peripheral surface side and the notch 5b on the outer peripheral surface side are in a positional relationship shifted in the longitudinal direction of the foamable substrate 5. Therefore, the distance 5f between the vertices of the notches 5a and 5b on the inner peripheral surface side and the outer peripheral surface side is longer than that of the not-shifted shape as in the notches 3a and 3b shown in FIG. Therefore, the foamable substrate 5 is difficult to cut.
[0028] (実施の形態 4)  [Embodiment 4]
実施の形態 4を図 6〜8にしたがって説明する。実施の形態 4は、実施の形態 1とほ ぼ同様に形成されている力 図 1に示す支持部材 2に代えて図 6〜8に示す支持部 材 7を有している点において相違している。以下、相違点を中心に実施の形態 4につ いて説明する。  Embodiment 4 will be described with reference to FIGS. The fourth embodiment is different from the first embodiment in that it has a support member 7 shown in FIGS. 6 to 8 instead of the support member 2 shown in FIG. Yes. Hereinafter, the fourth embodiment will be described focusing on the differences.
[0029] 支持部材 7は、図 6, 7に示すように本体部 7aと、本体部 7aの外周部に立設する周 壁部 7bと、周壁部 7bの先端縁から外方に張出す周張出部 7cを有している。周壁部 7bの基端部には、周張出部 7cと平行に張出して発泡性基材 3の脱落を防止する脱 落防止部 7eが複数設けられている。脱落防止部 7eに対応する周張出部 7cの領域 には、図 7に示すように貫通部 7clが形成されている。したがって脱落防止部 7eは、 貫通部 7c 1によって成形容易になって!/、る。  [0029] As shown in Figs. 6 and 7, the support member 7 includes a main body portion 7a, a peripheral wall portion 7b erected on the outer peripheral portion of the main body portion 7a, and a peripheral portion projecting outward from the tip edge of the peripheral wall portion 7b. It has an overhang 7c. The base end portion of the peripheral wall portion 7b is provided with a plurality of dropout prevention portions 7e that extend in parallel with the peripheral overhang portion 7c and prevent the foamable base material 3 from falling off. As shown in FIG. 7, a penetrating portion 7cl is formed in the region of the circumferential overhanging portion 7c corresponding to the dropout preventing portion 7e. Therefore, the drop-off prevention part 7e is easily formed by the through part 7c 1.
[0030] 周張出部 7cの外周縁には、図 7, 8に示すように保持部 7dが立設されている。保持 部 7dは、周張出部 7cの外周縁全周に設けられており、保持部 7dと周壁部 7bの間に 発泡性基材 3が外方から弾性変形されつつ嵌め込まれる。そして発泡性基材 3の弾 性戻りが保持部 7dによって規制され、発泡性基材 3が支持部材 7によって保持される 。換言すると支持部材 7は、外周部近傍に周壁部 7bを有し、周壁部 7bよりも外周側 に保持部 7dを有し、保持部 7dによって発泡性基材 3の弾性戻りを規制する構成にな つている。そして支持部材 7の一部にクリップ 7fがー体に成形されている。  [0030] As shown in FIGS. 7 and 8, a holding portion 7d is erected on the outer peripheral edge of the circumferentially extending portion 7c. The holding part 7d is provided on the entire outer peripheral edge of the circumferential overhanging part 7c, and the foamable base material 3 is fitted between the holding part 7d and the peripheral wall part 7b while being elastically deformed from the outside. Then, the elastic return of the foamable substrate 3 is regulated by the holding portion 7d, and the foamable substrate 3 is held by the support member 7. In other words, the support member 7 has a peripheral wall portion 7b in the vicinity of the outer peripheral portion, a holding portion 7d on the outer peripheral side of the peripheral wall portion 7b, and a configuration that restricts elastic return of the foamable base material 3 by the holding portion 7d. There is. A clip 7f is formed on a part of the support member 7 into a body.
[0031] (実施の形態 5)  [0031] (Embodiment 5)
実施の形態 5を図 9〜； 11にしたがって説明する。実施の形態 5は、実施の形態 1と ほぼ同様に形成されている力 S、図 1 , 2に示す保持部 2dと脱落防止部 2eに代えて図 9〜； 1 1に示す保持部 8aと脱落防止部 8bが支持部材 2に形成されている点において 相違している。以下、相違点を中心に実施の形態 5について説明する。 The fifth embodiment will be described with reference to FIGS. The fifth embodiment is different from the first embodiment. The holding force 8 formed in substantially the same manner, the holding part 2d shown in FIGS. 1 and 2 and the drop-off prevention part 2e are replaced with the holding part 8a and the drop-off prevention part 8b shown in FIG. Is different. Hereinafter, the fifth embodiment will be described focusing on the differences.
[0032] 保持部 8aは、図 9〜； 11に示すように梁部 8alと爪部 8a2を有している。梁部 8alは 、周張出部 2cに設けた一対の切込み 8cによって片持ち梁状でかつ弾性変形可能な 構成になっている。爪部 8a2は、梁部 8alの先端に形成されており、発泡性基材 3側 に突出して発泡性基材 3に掛かり、好ましくは発泡性基材 3の切込み 3bに突入して 芯線部 3eに掛かる。脱落防止部 8bは、周張出部 2cと平行に周壁部 2bから張出して 、発泡性基材 3の周張出部 2c側からの脱落を防止する。  The holding portion 8a has a beam portion 8al and a claw portion 8a2 as shown in FIGS. The beam portion 8al has a cantilever-like shape and can be elastically deformed by a pair of cuts 8c provided in the circumferentially projecting portion 2c. The claw portion 8a2 is formed at the tip of the beam portion 8al, protrudes toward the foamable base material 3 and hangs on the foamable base material 3, and preferably enters the notch 3b of the foamable base material 3 to enter the core wire portion 3e. It takes. The fall prevention part 8b is projected from the peripheral wall part 2b in parallel with the circumferential projecting part 2c to prevent the foamable substrate 3 from coming off from the circumferential projecting part 2c side.
[0033] 以上ようにして実施の形態 5が形成されている。すなわち支持部材 2は、周張出部 2 cと脱落防止部 8bを有している。周張出部 2cに形成された保持部 8aは、片持ち梁状 でかつ弾性変形可能な梁部 8alと、梁部 8alの先端に形成されかつ発泡性基材 3に 掛カ、る爪部 8a2を有している。したがって発泡性基材 3は、脱落防止部 8bによって周 張出部 2c側からの脱落が防止され得る。そして発泡性基材 3は、梁部 8alを弾性変 形させつつ爪部 8a2が掛けられるために確実かつ容易に支持部材 2に保持され得る  As described above, the fifth embodiment is formed. That is, the support member 2 has a circumferential overhanging portion 2c and a dropout preventing portion 8b. The holding portion 8a formed on the circumferentially projecting portion 2c is a cantilevered and elastically deformable beam portion 8al, and a claw portion that is formed at the tip of the beam portion 8al and hooks on the foamable substrate 3. 8a2. Therefore, the foamable base material 3 can be prevented from falling off from the extended portion 2c side by the dropout preventing portion 8b. The foamable base material 3 can be securely and easily held by the support member 2 because the claw portion 8a2 is hooked while the beam portion 8al is elastically deformed.
[0034] (実施の形態 6) [Embodiment 6]
実施の形態 6を図 12, 13にしたがって説明する。実施の形態 6は、実施の形態 1と ほぼ同様に形成されている力 S、図 1 , 2に示す保持部 2dと脱落防止部 2eに代えて図 12, 13に示す脱落防止部 8dが支持部材 2に形成されている点において相違してい る。以下、相違点を中心に実施の形態 6について説明する。  The sixth embodiment will be described with reference to FIGS. In the sixth embodiment, the force S formed in substantially the same manner as in the first embodiment is supported by the drop-off prevention portion 8d shown in FIGS. 12 and 13 instead of the holding portion 2d and the drop-off prevention portion 2e shown in FIGS. It differs in that it is formed on member 2. Hereinafter, the sixth embodiment will be described focusing on the differences.
[0035] 脱落防止部 8dは、図 12, 13に示すように周張出部 2cと平行に周壁部 2bから張出 している。脱落防止部 8dは、片持ち梁状でかつ弾性変形可能な梁部 8dlと、梁部 8 dlの先端に形成された爪部 (保持部） 8d2を有している。爪部 8d2は、発泡性基材 3 側に突出して発泡性基材 3に掛かり、好ましくは発泡性基材 3の切込み 3bに突入し て芯線部 3eに掛かる。したがって爪部 (保持部） 8d2は、発泡性基材 3の弾性戻りを 規制する。周張出部 2cには、脱落防止部 8dに対応した形状の穴 8eが形成されてい [0036] (実施の形態 7) [0035] As shown in FIGS. 12 and 13, the drop-off preventing portion 8d extends from the peripheral wall portion 2b in parallel with the peripheral overhang portion 2c. The drop-off prevention portion 8d has a beam portion 8dl that is cantilevered and elastically deformable, and a claw portion (holding portion) 8d2 formed at the tip of the beam portion 8dl. The claw portion 8d2 protrudes toward the foamable base material 3 and is hooked on the foamable base material 3, and preferably enters the notch 3b of the foamable base material 3 and hits the core wire portion 3e. Accordingly, the claw portion (holding portion) 8d2 regulates the elastic return of the foamable base material 3. A hole 8e having a shape corresponding to the drop-off preventing portion 8d is formed in the circumferential protrusion 2c. [Embodiment 7]
実施の形態 7を図 14にしたがって説明する。実施の形態 7は、実施の形態 6とほぼ 同様に形成されている力 実施の形態 6の構成に加えて突起 (保持部） 8fを有してい る点において相違している。突起 8fは、穴 8eの両側位置から脱落防止部 8d側に向 けて突出して発泡性基材 3に掛かり、好ましくは発泡性基材 3の切込み 3bに突入して 芯線部 3eに掛かる。したがって突起 (保持部） 8fは、発泡性基材 3の弾性戻りを規制 する。  Embodiment 7 will be described with reference to FIG. The seventh embodiment is different from the sixth embodiment in that it has a protrusion (holding portion) 8f in addition to the configuration of the sixth embodiment. The protrusion 8f protrudes from both side positions of the hole 8e toward the drop-off preventing portion 8d and is hooked on the foamable base material 3, and preferably enters the cut 3b of the foamable base material 3 and hits the core wire portion 3e. Accordingly, the protrusion (holding portion) 8f regulates the elastic return of the foamable substrate 3.
[0037] (実施の形態 8)  [0037] (Embodiment 8)
実施の形態 8を図 15, 16にしたがって説明する。実施の形態 8は、実施の形態 1と ほぼ同様に形成されている力、図 1 , 2に示す保持部 2dに代えて図 15, 16に示す保 持部 8gが支持部材 2に形成されている点において相違している。以下、相違点を中 心に実施の形態 8について説明する。保持部 8gは、図 15, 16に示すようにピン形状 であって周張出部 2cから発泡性基材 3側に向けて突出する。そして保持部 8gは、発 泡性基材 3の切込み 3bに突入して発泡性基材 3の弾性戻りを規制する。  The eighth embodiment will be described with reference to FIGS. In the eighth embodiment, the force formed in substantially the same manner as in the first embodiment, in which the holding member 8g shown in FIGS. 15 and 16 is formed on the support member 2 in place of the holding member 2d shown in FIGS. Are different. The following describes Embodiment 8 with a focus on the differences. The holding part 8g has a pin shape as shown in FIGS. 15 and 16, and protrudes from the circumferentially projecting part 2c toward the foamable substrate 3 side. Then, the holding portion 8g enters the cut 3b of the foamable base material 3 and regulates the elastic return of the foamable base material 3.
[0038] (他の実施の形態）  [0038] (Other Embodiments)
本発明は、実施の形態;!〜 8に限定されず、以下の形態等であっても良い。  The present invention is not limited to the embodiments;! To 8, and may be the following embodiments.
[0039] 実施の形態;!〜 8に係る発泡性基材は、断面四角形状であって周壁部に対向する 内周面側とその反対の外周面側に切込みを有していた。しかし内周面側のみ、ある いは外周面側のみ、他の側面のみに切込みを有する形態、複数の側面に切込みを 有する形態、全周に切込みを有する形態等であっても良!/、。  Embodiments: The foamable substrates according to! To 8 have a square cross section and have cuts on the inner peripheral surface side facing the peripheral wall portion and on the opposite outer peripheral surface side. However, only the inner peripheral surface side or only the outer peripheral surface side, a form having notches only on other side surfaces, a form having notches on a plurality of side surfaces, a form having notches on the entire circumference, etc. .
[0040] 実施の形態;!〜 8に係る発泡性基材は、断面四角形状であつたが、他の断面形状 、例えば円形、楕円形、多角形状等の断面形状を有する形態であっても良い。  [0040] Although the foamable substrate according to Embodiments 8 to 8 has a quadrangular cross-section, it may have other cross-sectional shapes, for example, a cross-sectional shape such as a circle, an ellipse, or a polygon. good.
[0041] 実施の形態 1〜8に係る支持部材は、脱落防止部を有していた。しかし脱落防止部 を有してレ、な!/、形態であっても良レ、。  [0041] The support members according to Embodiments 1 to 8 had drop-off prevention portions. However, it has a drop-off prevention part.
[0042] 実施の形態 1〜8に係る支持部材は、脱落防止部を部分的に有していた。しかし脱 落防止部を支持部材の外周部全周に有してレ、る形態であっても良レ、。  [0042] The support members according to Embodiments 1 to 8 partially had dropout prevention portions. However, it is possible to have a drop-off prevention part on the entire outer periphery of the support member.

Claims

請求の範囲 The scope of the claims
[1] 外部加熱によって発泡する材料よりなる発泡性基材と、その発泡性基材を中空構 造物の中空室の所要位置に支持する支持部材とを有する中空構造物の発泡充填具 でめって、  [1] A hollow structure foam filler having a foamable base material made of a material that foams by external heating and a support member that supports the foamable base material at a required position of the hollow chamber of the hollow structure. And
前記発泡性基材は、直線長尺状に形成され、かつ長尺方向に略直交する方向に 延出する切込みを複数有し、  The foamable base material has a plurality of cuts that are formed in a linear long shape and extend in a direction substantially orthogonal to the long direction,
前記支持部材は、外周部近傍に立設する周壁部と、その周壁部よりも外周側に形 成される保持部を有し、前記周壁部の外周面に前記発泡性基材が前記切込みを利 用しつつ弾性変形されて配設され、前記保持部によって弾性戻りが規制される構成 になっている中空構造物の発泡充填具。  The support member has a peripheral wall portion standing in the vicinity of the outer peripheral portion and a holding portion formed on the outer peripheral side of the peripheral wall portion, and the foamable base material cuts the notch on the outer peripheral surface of the peripheral wall portion. A foam-filling device for a hollow structure that is arranged to be elastically deformed while being used and whose elastic return is restricted by the holding portion.
[2] 請求項 1に記載の中空構造物の発泡充填具であって、  [2] A foam filling device for a hollow structure according to claim 1,
切込みは、周壁部の外周面に対向する発泡性基材の内周面、あるいはその反対 の外周面から発泡性基材軸中心に向けて切込まれて形成され、かつ前記内周面ま たは前記外周面から軸中心に向けて除々に幅が狭くなつている中空構造物の発泡 充填具。  The incision is formed by cutting from the inner peripheral surface of the foamable base material facing the outer peripheral surface of the peripheral wall portion, or from the opposite outer peripheral surface toward the center of the foamable base material axis. Is a foam-filling device having a hollow structure in which the width gradually decreases from the outer peripheral surface toward the center of the shaft.
[3] 請求項 1または 2に記載の中空構造物の発泡充填具であって、  [3] A foam filling tool for a hollow structure according to claim 1 or 2,
切込みは、支持部材の周壁部に対向する発泡性基材の内周面と、その反対の外 周面の両面から発泡性基材軸中心に向けて切込まれて形成され、かつ前記内周面 側の切込みと前記外周面側の切込みとが前記発泡性基材の長手方向にずれた位 置関係になっている中空構造物の発泡充填具。  The incision is formed by cutting from the inner peripheral surface of the foamable base material facing the peripheral wall portion of the support member and the opposite outer peripheral surface toward the center of the foamable base material axis, and the inner peripheral surface. A foam filling tool for a hollow structure in which a cut on the surface side and a cut on the outer peripheral surface side are shifted in the longitudinal direction of the foamable substrate.
[4] 請求項 1〜3のいずれかに記載の中空構造物の発泡充填具であって、 [4] A foam filling tool for a hollow structure according to any one of claims 1 to 3,
支持部材は、周壁部から外周に向けて張出す周張出部と、前記周張出部と平行に 前記周壁部から張出して発泡性基材の前記周張出部側からの脱落を防止する脱落 防止部とを有し、  The support member extends from the peripheral wall portion toward the outer periphery, and extends from the peripheral wall portion in parallel with the peripheral protrusion portion to prevent the foamable base material from falling off from the peripheral protrusion portion side. A drop prevention part,
前記周張出部に形成された保持部または脱落防止部は、片持ち梁状でかつ弾性 変形可能な梁部と、前記梁部の先端に形成されかつ前記発泡性基材に掛力、る爪部 を有している中空構造物の発泡充填具。  The holding part or the drop-off preventing part formed on the circumferential projecting part is a cantilevered and elastically deformable beam part, and is formed at the tip of the beam part and exerts a force on the foamable base material. A foam filling device for a hollow structure having a claw portion.
PCT/JP2007/069946 2006-11-29 2007-10-12 Foam filling tool of hollow structure WO2008065817A1 (en)

Priority Applications (1)

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JP2008546906A JPWO2008065817A1 (en) 2006-11-29 2007-10-12 Hollow structure foam filler

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JP2006321648 2006-11-29
JP2006-321648 2006-11-29

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WO2008065817A1 true WO2008065817A1 (en) 2008-06-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013525150A (en) * 2010-04-26 2013-06-20 シーカ・テクノロジー・アーゲー Inflatable insert comprising a flexible substrate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08258047A (en) * 1995-03-24 1996-10-08 Neox Lab:Kk Support structure of foamable material in hollow structure
JP2002154129A (en) * 2000-11-21 2002-05-28 Neoex Lab Inc Filling tool for hollow structure and its manufacturing method
JP2003094475A (en) * 2001-09-25 2003-04-03 Iida Sangyo Kk Air gap filling material
JP2004533959A (en) * 2001-07-02 2004-11-11 ウッチンソン Soundproofing device for mounting inside tubular parts, especially car body parts
JP2005319844A (en) * 2004-05-06 2005-11-17 Nitto Denko Corp Foaming filling member
JP2005319845A (en) * 2004-05-06 2005-11-17 Nitto Denko Corp Foaming filling member
JP2007125859A (en) * 2005-11-07 2007-05-24 Iida Sangyo Kk Expansible shaped body and filling tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08258047A (en) * 1995-03-24 1996-10-08 Neox Lab:Kk Support structure of foamable material in hollow structure
JP2002154129A (en) * 2000-11-21 2002-05-28 Neoex Lab Inc Filling tool for hollow structure and its manufacturing method
JP2004533959A (en) * 2001-07-02 2004-11-11 ウッチンソン Soundproofing device for mounting inside tubular parts, especially car body parts
JP2003094475A (en) * 2001-09-25 2003-04-03 Iida Sangyo Kk Air gap filling material
JP2005319844A (en) * 2004-05-06 2005-11-17 Nitto Denko Corp Foaming filling member
JP2005319845A (en) * 2004-05-06 2005-11-17 Nitto Denko Corp Foaming filling member
JP2007125859A (en) * 2005-11-07 2007-05-24 Iida Sangyo Kk Expansible shaped body and filling tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013525150A (en) * 2010-04-26 2013-06-20 シーカ・テクノロジー・アーゲー Inflatable insert comprising a flexible substrate

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