JP2007091026A - Vehicle interior trim having airbag door section - Google Patents

Vehicle interior trim having airbag door section Download PDF

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Publication number
JP2007091026A
JP2007091026A JP2005282666A JP2005282666A JP2007091026A JP 2007091026 A JP2007091026 A JP 2007091026A JP 2005282666 A JP2005282666 A JP 2005282666A JP 2005282666 A JP2005282666 A JP 2005282666A JP 2007091026 A JP2007091026 A JP 2007091026A
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Prior art keywords
airbag
vibration
back surface
airbag door
interior
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JP2005282666A
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Japanese (ja)
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Masayuki Uchida
雅之 内田
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DaikyoNishikawa Corp
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DaikyoNishikawa Corp
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Priority to JP2005282666A priority Critical patent/JP2007091026A/en
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    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/234—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being in the form of tessellations
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3038—Air bag covers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Instrument Panels (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent appearance from looking unattractive even when the main body of a vehicle interior trim having an airbag door section is made thinner. <P>SOLUTION: An airbag chute 11 has a flange section 17 which is vibration-welded to an area surrounding the airbag door section 9 on the rear surface of a base material 3 (the interior trim body) of an instrument panel 1. Also, the air bag chute 11 is equipped with a frame body 13 in which an air bag device 31 is housed, a flap section 19 which is vibration-welded to the rear surface of the airbag door section 9, and a hinge section 21 which integrally connects the proximal end sides of the frame body 13 and the flap section 19. On the flange section 17 and the flap section 19, a plurality of first ribs 23 which extend by being tilted to the vibrating direction of the vibration-welding, and a plurality of second ribs 25 which extend by being tilted in a manner to become symmetrical with the first ribs 23 to the vibrating direction are formed into a lattice shape in a manner to cross each other. The first and second ribs 23 and 25 are fixed to the rear surface of the base material 3 by welding. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、エアバッグ装置の作動により展開するエアバッグドア部が設けられたインストルメントパネル等の車両用内装品に関するものである。   The present invention relates to a vehicle interior such as an instrument panel provided with an airbag door that is deployed by the operation of an airbag device.

従来より、この種の車両用内装品として、例えば特許文献１に記載されているように、エアバッグドア部（扉予定部）が破断予定部（テアライン）で区画された樹脂製の内装品本体（リッド）と、この内装品本体の裏側に上記エアバッグドア部に対応して振動溶着により一体に取り付けられた樹脂製のエアバッグシュート（インナ）と、を備えたインストルメントパネルが知られている。   Conventionally, as this type of vehicle interior product, as described in Patent Document 1, for example, a resin interior product body in which an airbag door portion (predetermined door portion) is partitioned by a planned break portion (tea line) There is known an instrument panel including a lid and a resin air bag chute (inner) integrally attached to the back side of the interior body by vibration welding corresponding to the air bag door portion. Yes.

上記エアバッグシュートは、上記内装品本体におけるエアバッグドア部の裏面とこれを囲む部位（非展開部）とにそれぞれ接合されるフラップ部（扉補強部）及びフランジ部（周縁補強部）を備えていて、そのフラップ部及びフランジ部には、各々振動溶着の振動方向に沿って延びる複数の第１方向突条部（第１リブ）と、これに直交する複数の第２方向突条部（第２リブ）とが格子状に形成されており、これらの突条部を内装品本体の裏面に押し付けて加振することによって、溶着させて固定するようになっている。
特開２００４−１７５３０５号公報 The airbag chute includes a flap portion (door reinforcement portion) and a flange portion (peripheral reinforcement portion) that are respectively joined to the back surface of the airbag door portion in the interior article body and a portion (non-deployment portion) surrounding the airbag door portion. The flap portion and the flange portion each have a plurality of first direction protrusions (first ribs) extending along the vibration direction of vibration welding, and a plurality of second direction protrusions ( The second ribs) are formed in a lattice shape, and these protrusions are pressed against the back surface of the interior product main body to be vibrated to be welded and fixed.
JP 2004-175305 A

ところで、近年、コストダウンや軽量化などのために内装品本体を薄くすることが求められており、こうすると、上記のようにエアバッグシュートを振動溶着により取り付けたときに、内装品本体に外観不良が発生する虞れがある。すなわち、上記のように振動方向の第１方向突条部とこれに直交する第２方向突条部とをそれぞれ内装品本体の裏面に振動溶着するときには、第１方向突条部に加わる熱量が第２方向突条部に比べて大きくなるので、両者の溶け具合が異なるものとなり、その分、溶着終了時点で両者の高さが異なるものとなって、内装品本体の表面に波打つような模様が浮き出てしまうのである。   By the way, in recent years, it has been required to reduce the thickness of the interior product body for cost reduction and weight reduction. Thus, when the airbag chute is attached by vibration welding as described above, There is a risk that defects will occur. That is, when the first direction protrusion in the vibration direction and the second direction protrusion perpendicular to the vibration direction are welded to the back surface of the interior product main body as described above, the amount of heat applied to the first direction protrusion is Since it is larger than the ridges in the 2nd direction, the melted state of the two will be different, and the height of both will be different at the end of welding, and the pattern will wave on the surface of the interior body Will come out.

本発明は斯かる点に鑑みてなされたものであり、その目的とするところは、振動溶着のための突条部の構成に工夫を凝らして、内装品本体を薄くしても外観不良が発生しないようにすることにある。   The present invention has been made in view of such a point, and the object of the present invention is to devise the configuration of the protruding portion for vibration welding and to cause appearance defects even if the interior body is made thin. There is to do not.

上記の目的を達成するため、本発明では、互いに交差する２方向の突条部を振動方向に対し対称に傾斜させて、摩擦により両者に加わる熱量が略同じになるようにした。   In order to achieve the above object, in the present invention, the two ridges intersecting each other are inclined symmetrically with respect to the vibration direction so that the amount of heat applied to both by friction is substantially the same.

具体的には、この発明は、エアバッグ装置の作動により展開するエアバッグドア部が破断予定部で区画された内装品本体と、該内装品本体の裏面に上記エアバッグドア部に対応して一体に取り付けられたエアバッグシュートと、を備えたエアバッグドア部付き車両用内装品を対象とし、上記エアバッグシュートが、上記内装品本体の裏面において上記エアバッグドア部を囲む部位に振動溶着されたフランジ部を有し、上記エアバッグ装置が収容される枠体と、上記エアバッグドア部の裏面に振動溶着されたフラップ部と、上記枠体とフラップ部の基端側とを一体に連結するヒンジ部と、を備えている場合に、次のような解決手段を講じた。   Specifically, the present invention relates to an interior product main body in which an airbag door portion that is deployed by the operation of an airbag device is partitioned by a portion to be broken, and the back surface of the interior product body corresponds to the airbag door portion. A vehicle-mounted interior product with an airbag door portion provided with an integrally mounted airbag chute, wherein the airbag chute is vibration welded to a portion surrounding the airbag door portion on the back surface of the interior product body A frame body in which the airbag apparatus is accommodated, a flap part that is vibration welded to the back surface of the airbag door part, and a base end side of the frame body and the flap part. In the case where the hinge portion to be connected is provided, the following solution was taken.

すなわち、請求項１に係る発明では、上記フランジ部若しくはフラップ部の少なくとも一方に、各々振動溶着の振動方向に対し傾斜して延びる複数の第１方向突条部と、各々振動方向に対し上記第１方向突条部と対称に傾斜して延びる複数の第２方向突条部とを、互いに交差させて格子状に形成し、それら第１及び第２方向突条部をそれぞれ上記内装品本体の裏面に溶着により固定するようにした。   That is, in the first aspect of the invention, at least one of the flange portion and the flap portion is provided with a plurality of first-direction ridge portions extending obliquely with respect to the vibration direction of vibration welding, and the first direction protrusion portions with respect to the vibration direction. A plurality of second direction ridges extending obliquely and symmetrically with the one-direction ridge are formed in a lattice shape so as to intersect with each other, and the first and second direction ridges are respectively formed on the interior article main body. It was fixed to the back by welding.

請求項２の発明では、上記の構成において、上記第１及び第２方向突条部がそれぞれ振動方向に対してなす傾斜角度を４５°未満とした。   According to a second aspect of the present invention, in the above configuration, an inclination angle formed by each of the first and second direction protrusions with respect to the vibration direction is less than 45 °.

また、請求項３の発明では、上記第１及び第２方向突条部をそれらが交差する部位では上記内装品本体の裏面に溶着固定しないようにした。   In the invention of claim 3, the first and second directional protrusions are not welded and fixed to the back surface of the interior article main body at a portion where they intersect.

請求項１の発明によると、互いに交差する第１及び第２方向突条部を振動方向に対し対称に傾斜させたので、振動溶着の際に両者にそれぞれ加わる熱量が略同じになり、その溶け具合も略同じになる。そのため、内装品本体を薄くしても、その表面に波打つような模様が浮き出ることはなくなり、外観不良は発生しない。   According to the invention of claim 1, since the first and second ridges intersecting each other are inclined symmetrically with respect to the vibration direction, the amounts of heat applied to both at the time of vibration welding are substantially the same, The condition will be almost the same. Therefore, even if the interior product body is made thin, a wavy pattern does not appear on the surface, and an appearance defect does not occur.

また、請求項２の発明では、上記第１及び第２方向突条部の振動方向に対する傾斜角度が比較的小さくなるので、その分、摩擦熱が集中して溶着を効果的に行える。   In the invention of claim 2, since the inclination angle of the first and second ridges with respect to the vibration direction becomes relatively small, the frictional heat is concentrated correspondingly and welding can be effectively performed.

さらに、請求項３の発明では、例えば第１及び第２方向突条部同士の交差する部位をそれ以外の部位よりも低く成形しておいて、この交差部は内装品本体の裏面に溶着固定されないようにすることで、外観不良の発生をより確実に防止することができる。   Further, in the invention of claim 3, for example, a portion where the first and second direction protrusions intersect is formed lower than the other portions, and this intersection is welded and fixed to the back surface of the interior article main body. By preventing this from happening, it is possible to more reliably prevent appearance defects.

すなわち、仮に上記第１及び第２方向突条部同士の交差部を、それ以外の部位と同じ高さに成形して振動溶着すると、その交差部には摩擦熱が集中しやすいので、それ以外の部位とは溶け具合がやや異なるものとなり、場合によっては外観不良を引き起こす虞れがあるが、この構成では上記交差部を実質的に溶着しないようにすることで、外観不良をより確実に防止できるものである。   That is, if the intersection of the first and second ridges is formed at the same height as other parts and vibration welded, frictional heat tends to concentrate at the intersection, otherwise This part of the product melts slightly differently and may cause poor appearance in some cases, but with this configuration, it is possible to more reliably prevent poor appearance by preventing the above-mentioned intersection from being welded substantially. It can be done.

尚、そのように交差部を内装品本体の裏面に実質的に溶着しないようにするためには、交差部をそれ以外の部位よりも充分に低くして、振動要着の終了時点で交差部が内装品本体の裏面から離間するようにしてもよいが、これに限らず、振動要着の終了時点で交差部が内装品本体の裏面に当接するようにしてもよい。   In order to prevent the intersecting portion from being substantially welded to the back surface of the interior product body in such a manner, the intersecting portion is made sufficiently lower than the other portions, and the intersecting portion is reached at the end of the vibration attachment. However, the present invention is not limited to this, and the crossing portion may be brought into contact with the back surface of the interior article main body at the end of the vibration attachment.

そうした場合は交差部の一部が溶けて内装品本体の裏面に付着することも考えられるが、その程度であれば内装品本体の外観不良を引き起こす虞れはなく、何ら問題はない。従って、上記交差部を内装品本体の裏面に溶着固定しないようにする、というのは、そのように交差部の一部が溶けて付着している程度の状態も含む概念である。
In such a case, it is conceivable that a part of the intersecting portion melts and adheres to the back surface of the interior product main body, but if it is about that level, there is no possibility of causing an appearance defect of the interior product main body, and there is no problem. Therefore, not to weld and fix the intersecting part to the back surface of the interior product main body is a concept including a state in which a part of the intersecting part is melted and adhered.

以下、この発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態１）
図１は、本発明の実施形態１に係るエアバッグドア付き車両用内装品であるインストルメントパネル１の助手席前方部分を示す。図２は図１のII−II線における断面図である。このインストルメントパネル１は、内装品本体（インストルメントパネル本体）を構成するポリプロピレン（ＰＰ）等で成形された樹脂製基材３を備えており、該基材３の裏面には、２辺が車幅方向に平行に延びるとともに他の２辺が車体前後方向に平行に延びて、平面視で略矩形状をなす溝部５が形成されていて、この溝部５に対応する基材３部分が薄肉に形成されて、平面視略矩形状の破断予定部７とされている。 (Embodiment 1)
FIG. 1 shows a front part of a passenger seat of an instrument panel 1 that is an interior part for a vehicle with an airbag door according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. The instrument panel 1 includes a resin base material 3 formed of polypropylene (PP) or the like that constitutes an interior product body (instrument panel body), and the back surface of the base material 3 has two sides. Extending in parallel to the vehicle width direction and the other two sides extending in parallel to the longitudinal direction of the vehicle body, a groove portion 5 having a substantially rectangular shape in plan view is formed, and the base material 3 portion corresponding to the groove portion 5 is thin. It is made into the fracture | rupture planned part 7 of the substantially rectangular shape in planar view.

そして、上記破断予定部７によって囲まれて、後述するエアバッグ装置３１の作動により上記破断予定部７を破断して展開するエアバッグドア部９が画成されている。このエアバッグドア部９は、上記破断予定部７を形成する溝部５が基材３表面側から識別できない所謂シームレスタイプに構成されている。   And the airbag door part 9 which is surrounded by the said fracture | rupture scheduled part 7 and fractures | ruptures and expand | deploys the said fracture | rupture scheduled part 7 by the action | operation of the airbag apparatus 31 mentioned later is comprised. The airbag door portion 9 is configured as a so-called seamless type in which the groove portion 5 forming the planned fracture portion 7 cannot be identified from the surface side of the base material 3.

上記エアバッグドア部９及びその周辺の基材３裏面には、樹脂製エアバッグシュート１１が振動溶着により一体に取り付けられている。このエアバッグシュート１１は、図２に示すように、エアバッグ装置３１を収容するための概略矩形筒状の枠体１３を備えており、この枠体１３の上端である開口端内側には、図３にも示すようにエアバッグが膨出する略矩形状のシューティング口１５が形成される一方、その外側には、枠体１３に略直交するようにシューティング口１５の周辺部から外方に向かって延びるフランジ部１７が一体に成形されている。   A resin air bag chute 11 is integrally attached to the back surface of the air bag door 9 and the surrounding base material 3 by vibration welding. As shown in FIG. 2, the airbag chute 11 includes a substantially rectangular tubular frame 13 for accommodating the airbag device 31. As shown in FIG. 3, a substantially rectangular shooting port 15 in which the airbag bulges is formed, and on the outer side thereof, outward from the peripheral portion of the shooting port 15 so as to be substantially orthogonal to the frame body 13. A flange portion 17 extending toward the top is integrally formed.

また、上記枠体１３のシューティング口１５を覆うように、基材３のエアバッグドア部９を補強するためのフラップ部１９が配置されていて、その車体前方側（基端側）がシューティング口１５の車体前側の縁部に設けられた断面Ｓ字状のヒンジ部２１に一体に連結されている。このヒンジ部２１及びフラップ部１９も枠体１３と一体に成形されており、これらは例えば、上記基材３よりも可撓性の高いサーモプラスチックオレフィン（ＴＰＯ）等の軟質樹脂からなる。   Further, a flap portion 19 for reinforcing the airbag door portion 9 of the base material 3 is disposed so as to cover the shooting port 15 of the frame body 13, and the front side (base end side) of the vehicle body is the shooting port. 15 is integrally connected to a hinge portion 21 having an S-shaped cross section provided at an edge on the front side of the vehicle body. The hinge portion 21 and the flap portion 19 are also integrally formed with the frame body 13, and are made of a soft resin such as a thermoplastic plastic olefin (TPO) having higher flexibility than the base material 3.

上記フランジ部１７及びフラップ部１９の表面には、図３に示すように、互いに斜めに交差する格子状の溶着リブ２３，２５が一体に突設されており、これら溶着リブ２３，２５を介してフラップ部１９及びフランジ部１７が、それぞれ基材３のエアバッグドア部９裏面及びこれを囲む部位に振動溶着により固定されることで、その基材３の裏側に、エアバッグドア部９に対応付けてエアバッグシュート１１が一体に取り付けられるようになっている。   As shown in FIG. 3, lattice-shaped welding ribs 23 and 25 that obliquely intersect each other are integrally projected on the surfaces of the flange portion 17 and the flap portion 19, and the welding ribs 23 and 25 are interposed therebetween. The flap portion 19 and the flange portion 17 are fixed to the back surface of the air bag door portion 9 of the base material 3 and the portion surrounding the air bag door 9 by vibration welding. Correspondingly, the airbag chute 11 is integrally attached.

上記溶着リブ２３，２５は、図４(a)にも拡大して示すように、フランジ部１７及びフラップ部１９の長手方向（両図の横方向）である振動溶着時の振動方向に対して各々正方向（図の反時計回りの向き）に略４５°傾斜して延びる複数の第１リブ２３（第１方向突条部）と、各々振動方向に対し上記第１リブ２３と対称に傾斜して（つまり、図の時計回りの向きである負方向に略４５°傾斜して）延びる複数の第２リブ２５（第２方向突条部）とからなり、詳しくは図４(b)(c)等を参照して後述するが、両者が概ね均一に基材３裏面に溶着されている。   The welding ribs 23 and 25 are enlarged with respect to the vibration direction at the time of vibration welding, which is the longitudinal direction of the flange portion 17 and the flap portion 19 (lateral direction in both drawings) as shown in FIG. 4 (a). A plurality of first ribs 23 (first ridges) extending in a positive direction (counterclockwise direction in the drawing) inclined at approximately 45 °, and inclined symmetrically with the first rib 23 with respect to the vibration direction. (That is, inclined by about 45 ° in the negative direction, which is the clockwise direction in the drawing), and a plurality of second ribs 25 (second direction protrusions). As will be described later with reference to c) and the like, both are substantially uniformly welded to the back surface of the substrate 3.

上記枠体１３内には、車体前後方向からの衝撃から助手席の乗員を保護するためのエアバッグ及びインフレータ等を備えたエアバッグ装置３１が収納されている。このエアバッグ装置３１には、複数のフック３３が車幅方向に間隔をあけて固定され、これらフック３３を枠体１３に形成された複数の掛合孔１３ａに挿入することで、エアバッグ装置３１の作動時に各フック３３が各掛合孔１３ａの周縁に引っ掛かり、枠体１３が飛び出さないようになっている。   An air bag device 31 including an air bag, an inflator, and the like for protecting the passenger in the front passenger seat from an impact from the front-rear direction of the vehicle body is housed in the frame 13. A plurality of hooks 33 are fixed to the airbag device 31 at intervals in the vehicle width direction, and the hook devices 33 are inserted into a plurality of engaging holes 13 a formed in the frame body 13, whereby the airbag device 31. Each of the hooks 33 is hooked on the periphery of each of the engaging holes 13a during the operation, so that the frame body 13 does not pop out.

上記エアバッグ装置３１の下端には、金属製ブラケット３５が溶接により固定されており、このブラケット３５を、車幅方向に延びてインストルメントパネル１を支持するインパネレインフォースメント４１のブラケット部４１ａに重ね合わせて、両者に形成された貫通孔（図示せず）にボルト３７を挿入し、これにナット３９を螺合させることにより、締結している。こうしてエアバッグ装置３１の下端部は、ブラケット３５を介してインパネレインフォースメント４１に連結支持されている。   A metal bracket 35 is fixed to the lower end of the airbag device 31 by welding, and the bracket 35 extends to the bracket portion 41a of the instrument panel reinforcement 41 that extends in the vehicle width direction and supports the instrument panel 1. The bolts 37 are overlapped, and bolts 37 are inserted into through holes (not shown) formed in both of them, and nuts 39 are screwed into the bolts 37 to fasten them. Thus, the lower end portion of the airbag device 31 is connected and supported to the instrument panel reinforcement 41 via the bracket 35.

次に、エアバッグシュート１１を基材３裏面に振動溶着する要領を図５等を参照して説明する。まず、振動溶着前の溶着リブ２３，２５の形状は、図４(b)に示すように、第１及び第２リブ２３，２５が概略同じ高さとなるように突設され、それぞれ、突端に開放するように断面Ｖ字状の溝部２３ａ，２５ａが形成されている。このように溶着リブ２３，２５が形成されたフランジ部１７及びフラップ部１９の表面が下方を向くようにして、エアバッグシュート１１を上側の第１振動溶着治具４３にセットする一方、基材３はその裏面側が上方を向くようにして下側の第２振動溶着治具４５にセットする。   Next, the procedure for vibration welding the airbag chute 11 to the back surface of the substrate 3 will be described with reference to FIG. First, as shown in FIG. 4 (b), the shape of the welding ribs 23 and 25 before vibration welding is projected so that the first and second ribs 23 and 25 have substantially the same height. Grooves 23a and 25a having a V-shaped cross section are formed so as to open. The airbag chute 11 is set on the upper first vibration welding jig 43 so that the surfaces of the flange portion 17 and the flap portion 19 on which the welding ribs 23 and 25 are formed as described above face downward. 3 is set in the second vibration welding jig 45 on the lower side so that the back side faces upward.

そして、図５に示すように第１及び第２振動溶着治具４３，４５によってエアバッグシュート１１と基材３とを挟持し、この状態で上側の第１振動溶着治具４３を上方から第２振動溶着治具４５に押し付けながら、所定の方向（図において紙面に直交する方向）に加振する。これにより、それぞれ基材３裏面に接触している溶着リブ２３，２５が突端側から、即ちその溝部２３ａ，２５ａの側壁の稜線部から溶けて、基材３の裏面に接着され、図４(c)に示すように溝部２３ａ，２５ａの側壁に相当する部位が全て溶けた頃に、振動溶着を終了する。   Then, as shown in FIG. 5, the airbag chute 11 and the base material 3 are sandwiched by the first and second vibration welding jigs 43 and 45, and in this state, the upper first vibration welding jig 43 is While pressing against the two-vibration welding jig 45, vibration is applied in a predetermined direction (a direction perpendicular to the paper surface in the figure). Thereby, the welding ribs 23 and 25 respectively contacting the back surface of the base material 3 are melted from the projecting side, that is, from the ridge line portions of the side walls of the groove portions 23a and 25a, and are adhered to the back surface of the base material 3. As shown in c), the vibration welding is finished when all the portions corresponding to the side walls of the groove portions 23a and 25a are melted.

このようにして得られたインストルメントパネル１では、車両が衝突すると、エアバッグ装置３１のエアバッグがインフレータの作動によって膨出し、その膨出圧でエアバッグドア部９及びフラップ部１９が上方に押圧されて破断予定部７が破断するとともにヒンジ部２１が直線状態に伸び、これにより、エアバッグドア部９がフラップ部１９と一体になって上方に突出し、その後、上記ヒンジ部２１を開作動支点として回動して、車体後方上向きに開くようになる。   In the instrument panel 1 thus obtained, when the vehicle collides, the airbag of the airbag device 31 is inflated by the operation of the inflator, and the airbag door portion 9 and the flap portion 19 are moved upward by the inflation pressure. By being pressed, the portion 7 to be broken breaks and the hinge portion 21 extends in a straight line. As a result, the airbag door portion 9 projects upward together with the flap portion 19, and then opens the hinge portion 21. It pivots as a fulcrum and opens up rearward of the vehicle body.

したがって、この実施形態では、上述の如くエアバッグシュート１１のフランジ部１７及びフラップ部１９の表面に互いに斜めに交差する２方向の溶着リブ２３，２５を格子状に形成し、それらを基材３の裏面に溶着させて固定するようにしているので、溶着面積を確保することが容易であり、強固な接合状態を得る上で有利である。   Therefore, in this embodiment, as described above, the two-direction welding ribs 23 and 25 that obliquely intersect each other are formed on the surface of the flange portion 17 and the flap portion 19 of the airbag chute 11 in a lattice shape, and these are formed on the substrate 3. Therefore, it is easy to secure a welding area, which is advantageous in obtaining a strong joined state.

しかも、上記２方向の溶着リブ２３，２５を振動方向に対し対称になるように傾斜させているので、振動溶着の際に両者に加わる熱量が略同じになり、その溶け具合も略同じになる。このことで、上記フランジ部１７及びフラップ部１９の全体が全体が略均一の強度で基材３裏面に取り付けられることになり、エアバッグシュート１１によってエアバッグの展開作動を安定的に確保することができるとともに、その際にエアバッグドア部９が吹き飛ばされて車両の乗員に衝突する心配もなく、安全面でも好ましい。   Moreover, since the two-direction welding ribs 23 and 25 are inclined so as to be symmetric with respect to the vibration direction, the amount of heat applied to the two during vibration welding is substantially the same, and the degree of fusion is also substantially the same. . As a result, the entirety of the flange portion 17 and the flap portion 19 is attached to the back surface of the base material 3 with substantially uniform strength, and the airbag chute 11 can stably secure the airbag deployment operation. In this case, the airbag door portion 9 is blown away and there is no fear of colliding with the vehicle occupant, which is preferable in terms of safety.

また、上記２方向の溶着リブ２３，２５の振動溶着の際の溶け具合が略同じになるため、基材３を薄くしても、従来までのように基材３の表面に波打つような模様が浮き出ることはなくなる。つまり、外観不良が発生せず、見栄えが向上するので、商品価値を高めることができる。   In addition, since the welding conditions during the vibration welding of the two-direction welding ribs 23 and 25 are substantially the same, even if the base material 3 is made thin, it appears to wave on the surface of the base material 3 as before. No longer appears. In other words, the appearance is improved and the appearance is improved, so that the commercial value can be increased.

尚、上記実施形態１では、図３や図４(a)などに示すように、第１、第２リブ２３，２５をそれぞれ振動方向に対して正方向及び負方向に略４５°傾斜させているが、この傾斜角度は例えば図６(a)に一例を示すように４５°未満とする方が好ましい。リブ２３，２５の傾斜角度が小さいほど、摩擦熱が集中して溶着を効果的に行えるからである。   In the first embodiment, as shown in FIG. 3 and FIG. 4A, the first and second ribs 23 and 25 are inclined approximately 45 ° in the positive and negative directions with respect to the vibration direction, respectively. However, this inclination angle is preferably less than 45 ° as shown in FIG. 6 (a), for example. This is because as the inclination angle of the ribs 23 and 25 is smaller, the frictional heat is concentrated and welding can be effectively performed.

但し、振動方向に対する溶着リブの傾斜角度をあまり小さくすると、このリブを成形するための型の強度が確保し難くなる上に、型抜きの問題も生じるから、傾斜角度は概略２５〜３５°くらいとするのが最も好ましい。   However, if the inclination angle of the welding rib with respect to the vibration direction is made too small, it becomes difficult to secure the strength of the mold for forming this rib, and the problem of die-cutting also occurs, so the inclination angle is about 25 to 35 °. Is most preferable.

さらに、上記実施形態１では、第１、第２リブ２３，２５をそれぞれ同じ間隔で配置しているが、これに限らず、例えば図６(b)のように第１、第２リブ２３，２５は互いに異なる間隔で配置することもできる（図の例では複数の第２リブ２５同士の間隔を第１リブ２３よりも広くしている）。   Furthermore, in the first embodiment, the first and second ribs 23 and 25 are arranged at the same interval. However, the present invention is not limited to this. For example, as shown in FIG. 25 can also be arranged at different intervals (in the example of the figure, the intervals between the plurality of second ribs 25 are wider than those of the first ribs 23).

（実施形態２）
図７は、本発明の実施形態２に係るエアバッグシュート１１における溶着リブ２３，２５の構成を示し、この実施形態２のものは、図６(a)に示す上記実施形態１の変形例において、第１及び第２リブ２３，２５をそれらが交差する部位では基材３の裏面に溶着固定しないようにしたものである。その点を除いて実施形態２の構成は前記実施形態１のものと同じなので、同一部材には同一の符号を付して、その説明は省略する。 (Embodiment 2)
FIG. 7 shows the configuration of the welding ribs 23 and 25 in the airbag chute 11 according to the second embodiment of the present invention. This second embodiment is the same as the modification of the first embodiment shown in FIG. 6 (a). The first and second ribs 23 and 25 are not welded and fixed to the back surface of the substrate 3 at the portion where they intersect. Except for this point, the configuration of the second embodiment is the same as that of the first embodiment. Therefore, the same members are denoted by the same reference numerals, and the description thereof is omitted.

そして、この実施形態２では、図７(a)の一部（破線で囲んだｂ部）を拡大して同図(b)に示すように、２方向の溶着リブ２３，２５の交差する部位（以下、交差部２４という）をそれ以外の部位よりも所定量、低い（図の例では溝部２３ａ，２５ａの底部と同じ高さの）平坦面に成形して、上記実施形態１と同様に基材３の裏面に振動溶着することで、同図(c)に厚み方向の断面で示すように、両溶着リブ２３，２５のそれぞれが基材３裏面に溶着固定された状態で、交差部２４はちょうど基材３裏面に当接するようにしたものである。   And in this Embodiment 2, as shown to the same figure (b) by expanding a part (b part enclosed with the broken line) of Fig.7 (a), the site | part which the welding ribs 23 and 25 of two directions cross | intersect (Hereinafter referred to as “intersection 24”) is shaped into a flat surface (in the example shown in the figure, the same height as the bottom of the grooves 23a and 25a) lower than the other parts, and is formed in the same manner as in the first embodiment. By vibration welding to the back surface of the base material 3, as shown in the cross section in the thickness direction in FIG. 5C, both the welding ribs 23 and 25 are welded and fixed to the back surface of the base material 3. Reference numeral 24 denotes a contact with the back surface of the base material 3.

すなわち、上記実施形態１のように交差部２４をそれ以外の部位と同じ高さに成形して、振動溶着すると、この交差部２４にはそれ以外の部位に比べて摩擦熱が集中しやすいため、やや溶融量が多くなり、このため、各リブ同士の間隔やそれぞれの溶着量の設定によっては基材３の外観不良を引き起こす可能性があるが、上記のように交差部２４を低くして、基材３裏面に実質的に溶着させないようにすれば、そのような問題は生じないのである。   That is, when the intersecting portion 24 is formed at the same height as other portions and vibration welded as in the first embodiment, frictional heat is more likely to concentrate on the intersecting portion 24 as compared to other portions. The amount of melting is slightly increased. For this reason, depending on the interval between the ribs and the setting of the amount of welding, the appearance of the base material 3 may be deteriorated. Such a problem does not occur if the substrate 3 is not substantially welded to the back surface.

つまり、実施形態２によれば、第１及び第２リブ２３，２５の交差部２４を基材３裏面に実質的に溶着しないようにすることで、外観不良の発生をより確実に防止することができる。   That is, according to the second embodiment, by preventing the intersecting portion 24 of the first and second ribs 23 and 25 from being substantially welded to the back surface of the base material 3, it is possible to more reliably prevent the occurrence of appearance defects. Can do.

尚、上記図７(b)に示すように、交差部２４を溝部２３ａ，２５ａの底部と略同じ高さにしておけば、振動溶着の際に溶着リブ２３，２５の溝部２３ａ，２５ａの側壁に相当する部位が全て溶けて、交差部２４が接触し始めたときに摩擦抵抗が増大することになるので、こうなる時期を予め実験により求めておき、この時期に振動溶着を終了するようにすればよい。   As shown in FIG. 7 (b), if the intersecting portion 24 is set at substantially the same height as the bottom portions of the groove portions 23a and 25a, the side walls of the groove portions 23a and 25a of the welding ribs 23 and 25 during vibration welding. Since the frictional resistance will increase when all of the parts corresponding to are melted and the intersecting portion 24 starts to contact, such a time is obtained in advance by experiment, and the vibration welding is finished at this time. do it.

そうしていても交差部２４の一部が溶けて、基材３の裏面に付着することもあると考えられるが、その程度であれば基材３の表面に不良を引き起こす虞れはなく、何ら問題はない。従って、上記交差部２４を基材３裏面に当接させる、というのは、そのように交差部２４の一部が溶けて基材３裏面に付着している程度の状態も含むものである。   Even so, it is considered that a part of the intersecting portion 24 melts and may adhere to the back surface of the base material 3, but there is no risk of causing a defect on the surface of the base material 3 as long as it is, There is no problem. Therefore, bringing the intersecting portion 24 into contact with the back surface of the base material 3 includes such a state that a part of the crossing portion 24 is melted and adhered to the back surface of the base material 3.

また、そのように交差部２４を基材３の裏面に当接させる必要はなく、溶着リブ２３，２５において交差部２４をそれ以外の部位よりも充分に低くして、振動要着の終了時点で交差部２４が基材３裏面から離間するようにしてもよい。   Further, it is not necessary for the intersecting portion 24 to contact the back surface of the base material 3 as described above, and the intersecting portion 24 is made sufficiently lower than the other portions in the welding ribs 23 and 25 to finish the vibration attachment. Thus, the intersecting portion 24 may be separated from the back surface of the base material 3.

さらに、上記実施形態２では、上記実施形態１の変形例のように第１及び第２リブ２３，２５が斜めに交差する場合に、それらの交差部２４を基材３の裏面に溶着固定しないようにしたものであるが、このような交差部２４は、上記実施形態１のように第１及び第２リブ２３，２５が略直交する場合に設けてもよい。   Furthermore, in the said Embodiment 2, when the 1st and 2nd ribs 23 and 25 cross | intersect diagonally like the modification of the said Embodiment 1, those crossing parts 24 are not welded and fixed to the back surface of the base material 3. FIG. As described above, such an intersection 24 may be provided when the first and second ribs 23 and 25 are substantially orthogonal as in the first embodiment.

上述した実施形態１，２のエアバッグシュート１１は、フランジ部１７の他、ヒンジ部２１及びフラップ部１９も枠体１３と一体にＴＰＯ等により成形しているが、これに限らず、例えば、枠体１３の主要部を硬質樹脂により形成して、上記フランジ部１７、フラップ部１９及びヒンジ部２１等の一体成形品に組み付けるようにしてもよい。   In the airbag chute 11 of the first and second embodiments described above, the hinge part 21 and the flap part 19 are also molded integrally with the frame body 13 by TPO or the like in addition to the flange part 17. The main part of the frame 13 may be formed of a hard resin and assembled to an integrally molded product such as the flange part 17, the flap part 19, and the hinge part 21.

また、上記各実施形態では、エアバッグシュート１１の１枚のフラップ部１９が、インストルメントパネル基材３のエアバッグドア部９と一体になって、車体後方上向きに開くようになっているが、これに限らず、例えば２枚のフラップ部がそれぞれ車体前後のヒンジ部を回動支点にして車体後方上向き及び車体前方上向きに開く、所謂観音開きであってもよい。   Moreover, in each said embodiment, although the one flap part 19 of the airbag chute | shoot 11 is united with the airbag door part 9 of the instrument panel base material 3, it opens the vehicle body back upward. However, the present invention is not limited to this, and for example, the so-called double doors may be used in which the two flap portions open upward and backward in the vehicle body with the hinge portions at the front and rear of the vehicle body as pivot points.

また、上記各実施形態では、破断予定部７をインストルメントパネル本体７の裏面に形成された溝部９によって形成したが、これに限らず、例えば針状穴を密接させて多数凹設することで破断予定部７を形成してもよい。   Moreover, in each said embodiment, although the fracture | rupture planned part 7 was formed by the groove part 9 formed in the back surface of the instrument panel main body 7, it is not restricted to this, For example, by making many needle-shaped holes closely and providing concave The planned fracture portion 7 may be formed.

さらに、上記各実施形態では、車両用内装品がインストルメントパネル１である場合を示したが、本発明は他の車両用内装品にも適用することができる。   Further, in each of the above embodiments, the case where the vehicle interior product is the instrument panel 1 has been shown, but the present invention can also be applied to other vehicle interior products.

この発明は、例えば、インストルメントパネル等の車両用内装品に適用可能である。   The present invention is applicable to, for example, vehicle interior parts such as instrument panels.

実施形態１に係る車両用内装品であるインストルメントパネルの助手席前方部分を示す斜視図である。FIG. 3 is a perspective view showing a front part of the passenger seat of the instrument panel that is the vehicle interior product according to the first embodiment. 図１のII−II線における断面図である。It is sectional drawing in the II-II line of FIG. 実施形態１におけるエアバッグシュートの平面図である。FIG. 3 is a plan view of the airbag chute in the first embodiment. (a)は図３の一部を拡大して示す図であり、(b)はそのb-b線における断面図、(c)は溶着状態を示す図(b)相当図である。(a) is an enlarged view of a part of FIG. 3, (b) is a cross-sectional view taken along line bb, and (c) is a view corresponding to FIG. 実施形態１における振動溶着の要領を示す説明図である。It is explanatory drawing which shows the point of the vibration welding in Embodiment 1. FIG. (a)，(b)はそれぞれ実施形態１の変形例を示す図４(a)相当図である。(a), (b) is a figure corresponding to Drawing 4 (a) which shows a modification of Embodiment 1, respectively. (a)は実施形態２に係る図４(a)相当図であり、(b)はその一部分を拡大して示す斜視図であり、(c)は、図(b)のc-c線の部位における厚み方向の断面図である。FIG. 4A is a view corresponding to FIG. 4A according to the second embodiment, FIG. 4B is an enlarged perspective view showing a part thereof, and FIG. It is sectional drawing of the thickness direction.

符号の説明Explanation of symbols

１ インストルメントパネル（車両用内装品）
３ 基材
７ 破断予定部
９ エアバッグドア部
１１ エアバッグシュート
１３ 枠体
１７ フランジ部
１９ フラップ部
２１ ヒンジ部
２３ 第１リブ（第１方向突条部）
２４ 交差部
２５ 第２リブ（第２方向突条部）
1 Instrument panel (vehicle interior)
3 Base material 7 Planned break part 9 Airbag door part 11 Airbag chute 13 Frame 17 Flange part 19 Flap part 21 Hinge part 23 1st rib (1st direction protrusion part)
24 intersection 25 second rib (second direction ridge)

Claims (3)

エアバッグ装置の作動により展開するエアバッグドア部が破断予定部で区画された内装品本体と、該内装品本体の裏面に上記エアバッグドア部に対応して一体に取り付けられたエアバッグシュートと、を備えたエアバッグドア部付き車両用内装品であって、
上記エアバッグシュートは、
上記内装品本体の裏面において上記エアバッグドア部を囲む部位に振動溶着されたフランジ部を有し、上記エアバッグ装置が収容される枠体と、
上記エアバッグドア部の裏面に振動溶着されたフラップ部と、
上記枠体とフラップ部の基端側とを一体に連結するヒンジ部と、を備えており、
上記フランジ部若しくはフラップ部の少なくとも一方には、各々振動溶着の振動方向に対し傾斜して延びる複数の第１方向突条部と、各々振動方向に対し上記第１方向突条部と対称に傾斜して延びる複数の第２方向突条部とが、互いに交差して格子状に形成され、
上記第１及び第２方向突条部がそれぞれ上記内装品本体の裏面に溶着により固定されていることを特徴とするエアバッグドア部付き車両用内装品。 An interior door body in which an airbag door portion that is deployed by the operation of the airbag device is partitioned by a portion to be broken, and an airbag chute that is integrally attached to the back surface of the interior body body corresponding to the airbag door portion. , Vehicle interior parts with airbag doors,
The airbag chute is
A frame body that has a flange portion that is vibration welded to a portion surrounding the airbag door portion on the back surface of the interior article body, and in which the airbag device is accommodated,
A flap part vibration welded to the back surface of the airbag door part;
A hinge portion that integrally connects the frame body and the base end side of the flap portion,
At least one of the flange portion and the flap portion is inclined in a symmetrical manner with respect to the vibration direction of the vibration welding, and a plurality of first direction protrusion portions that extend obliquely with respect to the vibration direction. A plurality of second direction ridges extending in the form of a grid intersecting each other,
The vehicle interior part with an airbag door part, wherein the first and second direction protrusions are fixed to the back surface of the interior part body by welding. 上記第１及び第２方向突条部がそれぞれ振動方向に対してなす傾斜角度は４５°未満であることを特徴とする請求項１のエアバッグドア部付き車両用内装品。   2. The vehicle interior part with an airbag door part according to claim 1, wherein an inclination angle formed by each of the first and second direction protrusions with respect to the vibration direction is less than 45 °. 上記第１及び第２方向突条部は、それらが交差する部位では上記内装品本体の裏面に溶着固定されていないことを特徴とする請求項１又は２のいずれかのエアバッグドア部付き車両用内装品。
The vehicle with an airbag door part according to claim 1 or 2, wherein the first and second ridges are not welded and fixed to the back surface of the interior article main body at a portion where they intersect. Interior products.
JP2005282666A 2005-09-28 2005-09-28 Vehicle interior trim having airbag door section Pending JP2007091026A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009166260A (en) * 2008-01-11 2009-07-30 Kanto Auto Works Ltd Device and method of vibration welding
JP2009262814A (en) * 2008-04-25 2009-11-12 Nippon Plast Co Ltd Fitting structure of vehicular molded product
WO2015004977A1 (en) * 2013-07-10 2015-01-15 本田技研工業株式会社 Vibration welding device and vibration welding method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009166260A (en) * 2008-01-11 2009-07-30 Kanto Auto Works Ltd Device and method of vibration welding
JP2009262814A (en) * 2008-04-25 2009-11-12 Nippon Plast Co Ltd Fitting structure of vehicular molded product
WO2015004977A1 (en) * 2013-07-10 2015-01-15 本田技研工業株式会社 Vibration welding device and vibration welding method
CN105358309A (en) * 2013-07-10 2016-02-24 本田技研工业株式会社 Vibration welding device and vibration welding method
JP6046256B2 (en) * 2013-07-10 2016-12-14 本田技研工業株式会社 Vibration welding apparatus and vibration welding method

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