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WO2018005197A1 - Trim component for vehicle interior - Google Patents

Trim component for vehicle interior Download PDF

Info

Publication number
WO2018005197A1
WO2018005197A1 PCT/US2017/038572 US2017038572W WO2018005197A1 WO 2018005197 A1 WO2018005197 A1 WO 2018005197A1 US 2017038572 W US2017038572 W US 2017038572W WO 2018005197 A1 WO2018005197 A1 WO 2018005197A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
trim component
vehicle trim
mold
notch
Prior art date
Application number
PCT/US2017/038572
Other languages
French (fr)
Other versions
WO2018005197A8 (en
Inventor
Jennifer Anne STEME STROEBE
Bart William FOX
Michael Gerad ZIMMER
Michael Edward PHILLIPS
Dale Todd GLYNN
Original Assignee
Shanghai Yanfeng Jinqiao Automotive Trim Systems 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 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd filed Critical Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd
Priority to EP17820953.2A priority Critical patent/EP3478539B1/en
Priority to CN201780040512.2A priority patent/CN109451736B/en
Publication of WO2018005197A1 publication Critical patent/WO2018005197A1/en
Priority to US16/220,863 priority patent/US10926732B2/en
Publication of WO2018005197A8 publication Critical patent/WO2018005197A8/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2165—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by a tear line for defining a deployment opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0256—Dashboard liners
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards

Definitions

  • the present invention relates to a trim component for a vehicle interior.
  • trim component e.g. trim panel
  • Interior trim components are commonly provided as headliners, door panels, instrument panels, center consoles, and various other components in a vehicle.
  • airbags behind the trim component It is further known to provide a weakened area such as a score line in the trim component to direct the airbag during an airbag deployment process. It is further known to form the trim component by a compression forming process.
  • an improved trim component e.g. trim panel or instrument panel
  • a vehicle interior providing an exit for deployment of an airbag.
  • an improved trim component for a vehicle interior with an exit for deployment of an airbag that is not readily perceptible (e.g. having a smooth visible surface) from the vehicle interior.
  • an improved trim component with reduced break-through energy to facilitate effective airbag deployment It would further be advantageous to manufacture an improved trim component in a single mold apparatus.
  • the present invention relates to a vehicle trim component configured to support an airbag module providing an airbag and comprising a panel comprised of fibers; the panel may comprise a notch and at least one feature adjacent the notch.
  • the notch may be configured to direct deployment of the airbag through the panel.
  • the feature may comprise a protrusion configured to provide a relief for the notch.
  • the protrusion may be configured to direct deployment of the airbag through the panel.
  • the vehicle trim component may comprise a rib adjacent the notch; the rib may be configured to direct deployment of the airbag through the panel.
  • the rib may be formed on the panel; the rib may comprise resin.
  • the feature may comprise a rib configured to direct deployment of the airbag through the panel.
  • the rib may be formed on the panel; the rib may comprise a resin portion comprising resin and a fiber portion comprising fibers of the panel.
  • the present invention also relates to a vehicle trim component configured to support an airbag module providing an airbag and comprising a panel comprised of fibers.
  • the panel may comprise a first portion comprising a first thickness, a second portion comprising a second thickness, and a third portion comprising a third thickness.
  • the first portion of the panel may comprise a majority of the panel; the second thickness may be less than the first thickness; the third thickness may be greater than the first thickness.
  • the second portion of the panel may be configured to direct deployment of the airbag through the panel.
  • the first portion, the second portion and the third portion may comprise a substantially constant density.
  • the third portion may extend from the second portion; the third portion may be adjacent the second portion.
  • the second portion and the third portion may be formed concurrently.
  • the present invention also relates to a vehicle trim component prepared by a process comprising: (a) disposing a fiber panel onto a first surface of a mold; (b) compressing a first portion of the fiber panel between the first surface and a second surface of the mold to form the fiber panel into a compression formed component; (c) forming a second portion of the fiber panel between the first surface and the second surface of the mold to form a notch in the compression formed component and at least one protrusion in the compression formed component; (d) removing the vehicle trim component from the mold cavity.
  • the at least one protrusion may be formed in response to forming of the notch; the notch and the protrusion may be configured to direct deployment of an airbag through the vehicle trim component.
  • the vehicle trim component may comprise injecting resin into the mold to at least partially fill at least one void between the second surface of the mold and an uncompressed portion of the compression formed component to form a rib coupled to the compression formed component; the resin may be injected after the compression formed component is formed.
  • the resin may combine with the uncompressed portion of the compression formed component to form the rib; the rib may be configured to direct deployment of an airbag through the vehicle trim component.
  • the notch may be formed by a mold protrusion formed on the second surface of the mold and the protrusion may be formed by a recess formed on the second surface of the mold.
  • the present invention also relates to a method of manufacturing a vehicle trim
  • the notch may be configured to establish an opening in the vehicle trim component for deployment of an airbag through the vehicle trim component.
  • the present invention further relates to a vehicle trim component comprising a panel comprised of fibers; the panel may comprise a visible side and a non-visible side.
  • the panel may be configured to support an airbag module providing an airbag on the non-visible side of the panel.
  • the panel may comprise a notch and at least one feature adjacent the notch; the notch and the at least one feature may be formed on the non-visible side of the panel.
  • the visible side may comprise a smooth visible surface; the feature may be configured to direct deployment of the airbag through the panel.
  • FIGURE 1 A is a schematic perspective view of a vehicle according to an exemplary embodiment.
  • FIGURE IB is a schematic perspective cut-away view of a vehicle showing a vehicle interior according to an exemplary embodiment.
  • FIGURE 2A is a schematic perspective view of an instrument panel for a vehicle interior showing an airbag exit according to an exemplary embodiment.
  • FIGURE 2B is a schematic perspective detail view of an instrument panel for a vehicle interior showing an airbag exit according to an exemplary embodiment.
  • FIGURES 2C to 2E are schematic perspective detail views of an airbag deployment process according to an exemplary embodiment.
  • FIGURES 3A to 3C are schematic perspective views of a fiber mat being trimmed and compressed into a compressed fiber mat according to an exemplary embodiment.
  • FIGURES 4A to 4C are schematic perspective views of a compressed fiber mat formed into an instrument panel according to an exemplary embodiment.
  • FIGURES 4D and 4E are schematic perspective detail views of ancillary features on an instrument panel according to an exemplary embodiment.
  • FIGURE 5A is a schematic cross-section view of a vehicle interior trim component according to an exemplary embodiment.
  • FIGURES 5B to 5D are schematic partial cross-section views of a vehicle interior trim component according to an exemplary embodiment.
  • FIGURES 6A to 6E are schematic cross-section views of a molding process for a vehicle interior trim component according to an exemplary embodiment.
  • FIGURES 7 A to 7F are schematic partial cross-section views of a molding process for a vehicle interior trim component according to an exemplary embodiment.
  • FIGURES 8A to 8F are schematic partial cross-section views of a molding process for a vehicle interior trim component according to an exemplary embodiment.
  • FIGURES 9A and 9B are schematic flow diagrams for forming a vehicle interior trim component according to an exemplary embodiment.
  • FIGURE 10A is a schematic cross-section view of a conventional vehicle interior trim component according to an exemplary embodiment.
  • FIGURES 10B and IOC are schematic partial cross-section views of a conventional vehicle interior trim component according to an exemplary embodiment.
  • a vehicle V including an interior with an instrument panel IP and doors D.
  • interior components of vehicle V such as instrument panel IP and doors D may include trim panels made with a mixture of fiber and plastic.
  • instrument panel IP and doors D may provide visible surfaces in the vehicle interior of vehicle V.
  • instrument panel IP and/or doors D may provide at least one airbag behind the visible surfaces; instrument panel IP and/or doors D may provide a weakened area to aid the airbag in breaking through the trim panel during airbag deployment. See FIGURES 2A to 2E.
  • instrument panel IP may provide a weakened shape/zone shown as an airbag exit 10 to facilitate the airbag deployment.
  • the airbag exit 10 may be weakened by providing a score line behind the visible surface of instrument panel IP.
  • airbag exit 10 may include an "H" shape pattern.
  • the airbag exit may have a "U" shape pattern, a "bow tie” shape pattern, or any pattern suitable for airbag deployment.
  • airbag exit 10 may partially open during airbag deployment.
  • an airbag AB may deploy through an opening generated through the airbag exit 10 (i.e. the weakened area) on the instrument panel IP.
  • FIGURE 2D illustrates airbag AB as being partially inflated according to an exemplary embodiment.
  • airbag AB may fully inflate through the opening on instrument panel IP.
  • a fiber mat 301 may include a combination of fibers (e.g. natural and/or synthetic fibers) and thermoplastic resin (e.g. polypropylene (PP), acrylonitrile butadiene styrene (ABS),
  • PP polypropylene
  • ABS acrylonitrile butadiene styrene
  • fiber mat 301 may be trimmed into a fiber mat 301a; the instrument panel IP may comprise the trimmed fiber mat 301a.
  • the trimmed fiber mat 301a may have a thickness tl .
  • fiber mat 301a may be heated to induce the thermoplastic resin to liquefy.
  • fiber mat 301a may be heated and partially compressed into a compressed fiber mat 301b.
  • fiber mat 301a may be placed into a low-temperature mold and compression molded into a desired shape.
  • the thermoplastic within fiber mat 301b solidifies to establish a substantially rigid composite panel.
  • the compressed fiber mat 301b may have a thickness t2, which may be smaller than the thickness tl .
  • fiber mat 301a may include a combination of structural fibers and thermoset resin (e.g. epoxy, polyester, etc.).
  • fiber mat 301a may be compressed within a heated mold to form a partially compressed fiber mat 301b with a desired shape and to induce curing of the thermoset resin.
  • a substantially rigid composite panel may be formed after the thermoset resin is cured.
  • a compressed fiber mat 302 may be heated in an oven OV.
  • the hot compressed fiber mat 302 may be transferred into a mold having a mold top MT NS mold bottom MB.
  • a trim component shown as an instrument panel 300 may be produced by a process of concurrent compression forming and injection molding.
  • an exemplary thermoset resin e.g. epoxy, polyester, etc.
  • the heated compressed fiber mat 302 may be further compressed into a fiber panel 311; plastic resin may be injected on the back side of fiber panel 311 to form an ancillary feature shown as an airbag exit 10.
  • instrument panel 300 may provide airbag exit 10 configured to facilitate airbag deployment.
  • instrument panel 300 may provide ancillary features shown as plastic ribs 360 on the backside of fiber panel 311 to improve structural integrity and rigidity.
  • the fiber panel 311 may be configured to support an airbag chute AC (i.e. airbag module) comprising an airbag.
  • AC i.e. airbag module
  • plastic ribs 360 may be placed on the backside of the airbag exit 10 to provide structural support for the airbag chute AC.
  • a plastic rib 360 may be placed at any location on the backside of a fiber panel (e.g. along the edge of the fiber panel 311, in the middle of the fiber panel 311, etc.).
  • multiple plastic ribs 360 may be placed at various different locations on the backside of a fiber panel 311.
  • plastic ribs 360 may improve structural integrity of instrument panel 300.
  • instrument panel 300 may be able to maintain structural integrity during an airbag deployment; the position/placement of plastic ribs 360 may be intended to create a strength differential between different areas of instrument panel 300; energy needed for airbag to break through instrument panel 300 may be directed to the airbag exit 10 on instrument panel 300; plastic ribs 360 on the backside of instrument panel 300 may help prevent or minimize instrument panel 300 from ripping or tearing at any location other than the airbag exit 10 (i.e. score line) during an airbag deployment.
  • plastic ribs 360 on the backside of fiber panel 311 may form a honeycomb shaped pattern to improve structural integrity and rigidity.
  • the plastic ribs 360 may be formed in any configuration according to the specific application (e.g. ancillary features for attaching air vents, speakers or infotainment system, etc.).
  • the trim panel shown as an instrument panel 200 is shown schematically in FIGURE 5A.
  • instrument panel 200 may comprise a compressed fiber mat and a visible surface 200v.
  • the visible surface 200v may include a cover, such as leather or other aesthetically-pleasing material.
  • an instrument panel 200 is shown schematically in FIGURE 5B.
  • instrument panel 200 may comprise a compressed fiber mat.
  • instrument panel 200 may provide a notch 210.
  • the notch 210 may be configured to provide a weakened area within the instrument panel 200; the weakened area at the notch 210 may aid airbag deployment.
  • the instrument panel 200 may also provide protrusions 250 (i.e. feature) behind the visible surface 200v of the instrument panel 200 adjacent to the notch 210.
  • the instrument panel 200 may have a smaller thickness t4 at the notch 210 than thickness t3 at positions on the instrument panel 200 other than at the notch 210 and the protrusions 250; the instrument panel 200 also may have a greater thickness t5 at protrusions 250 adjacent to notch 210 than thickness t3 at positions on the instrument panel 200 other than at the notch 210 and the protrusions 250; material at the notch 210 may be pushed aside during compression forming to protrusions 250 adjacent to notch 210; the protrusions 250 may provide relief for the notch 210. See also FIGURES 6B to 6E.
  • the instrument panel 200 may have a substantially consistent density throughout .
  • the smaller thickness t4 at notch 210 may reduce the strength of the local area at the notch 210; the greater thickness t5 at the protrusions 250 may increase the strength of the local areas adjacent to the notch 210; the strength differential between the notch 210 and the adjacent protrusions 250 may help directing the breakthrough of airbag towards the notch 210 during the airbag deployment process.
  • the instrument panel 200 may include a first portion having a first thickness t3, a second portion (notch 210) having a second thickness t4, and a third portion (protrusions 250) comprising a third thickness t5.
  • the first portion may be a majority of the panel; the second thickness may be substantially less than the first thickness; the third thickness may be substantially greater than the first thickness; the second portion (protrusions 250) may be configured to direct deployment of the airbag through the instrument panel 200.
  • the first portion, the second portion, and the third portion may comprise a substantially constant density.
  • the third portion (protrusion 250) may extend from the second portion (notch 210); the third portion (protrusion 250) may be adjacent the second portion (notch 210); the third portion (protrusion 250) and the second portion (notch 210) may be formed concurrently; and third portion (protrusion 250) may be formed in response to formation of the second portion (notch 210).
  • the instrument panel 200 may provide a smooth visible surface 200v; additional material may not be required to cover the visible surface 200v of instrument panel 200. See also FIGURES 6A to 6E.
  • a trim panel shown as an instrument panel 300 may comprise a compressed fiber mat. See FIGURES 4A to 4E.
  • the instrument panel 300 may provide a depression 310.
  • the depression 310 may be configured to provide a weakened area within the instrument panel 300; the weakened area at the depression 310 may aid airbag deployment.
  • the instrument panel 300 may also provide a protrusion 350 and a rib 360 formed on the instrument panel 300 behind a visible surface 300v of the instrument panel 300 adjacent to the depression 310.
  • resin may be injection molded onto the backside of the instrument panel 300 to form the rib 360; the rib 360 may comprise a resin portion that may comprise resin and a fiber portion that may comprise fibers of the instrument panel 300. See also FIGURES 7D to 7F.
  • the instrument panel 300 may have a smaller thickness t6 at the depression 310 than thickness t3 at positions on the instrument panel 300 other than at the depression 310, the protrusion 350, and the rib 360; the instrument panel 300 also has a greater thickness t7 at protrusion 350 than thickness t3 at positions on the instrument panel 200 other than at the depression 310, the protrusion 350, and the rib 360; the rib 360 adjacent to the depression 310 may be formed to have a thickness t8; material at depression 310 may be pushed aside during compression forming toward protrusion 350 and rib 360 adjacent to depression 310. See also FIGURES 7D to 7F.
  • a trim panel shown as an instrument panel 400 may comprise a compressed fiber mat. See FIGURES 4A to 4E.
  • the instrument panel 400 may provide a depression 410.
  • the depression 410 may be configured to provide a weakened area within the instrument panel 400; the weakened area at the depression 410 may aid airbag deployment.
  • the weakened area at the depression 410 may aid airbag deployment.
  • the instrument panel 400 may also provide a rib 460 and a rib 460 behind a visible surface 400v of instrument panel 400 adjacent to depression 410.
  • resin may be injection molded onto the backside of the instrument panel 400 to form the rib 460 and the rib 460. See also FIGURES 8D to 8F.
  • the instrument panel 400 may have a smaller thickness tlO at the depression 410 than thickness t3 at positions on the instrument panel 400 other than at the depression 410 and the ribs 460; the rib 460 and the rib 460 adjacent to the depression 310 may be formed to have a thickness tl 1; material at depression 410 may be pushed aside during compression forming toward the ribs 460 adjacent to the depression 410. See also FIGURES 8D to 8F.
  • a mold apparatus may comprise a mold top MT and a mold bottom MB; a compressed fiber mat 202 having a thickness tl2 may be placed between mold top MT and mold bottom MB. See also FIGURE 4B.
  • the compressed fiber mat 202 may be placed between the mold top MT and the mold bottom MB; the mold top MT and the mold bottom MB may move between an open position to a closed position; the compressed fiber mat 202 may be further compressed and shaped between the mold top MT and the mold bottom MB.
  • the compressed fiber mat 202 may be heated prior to compression and forming.
  • the mold top MT may include a protrusion feature 210a and two depression features 250a adjacent to the protrusion feature 210a.
  • the protrusion 210a may push material on the compressed fiber mat 202 aside to form a notch 210 and protrusions 250 on the instrument panel 200. See FIGURE 6E. According to an exemplary embodiment, excessive material around notch 210 on compressed fiber mat 202 may be pushed into the depressions 250a to form the protrusions 250 adjacent to the notch 210. See FIGURES 6C to 6E. According to an exemplary embodiment as shown schematically in FIGURE 6E, the instrument panel 200 may be formed with the notch 210 and two protrusions 250 adjacent to the notch 210. See also FIGURE 5D. According to an exemplary embodiment, the instrument panel 200 may comprise a thickness tl3 at positions other than other than at the notch 210 and the protrusions 250; thickness tl3 may be smaller than thickness tl2.
  • a mold apparatus may comprise a mold top MT and mold bottom MB; the mold top MT may further comprise a nozzle N to inject plastic resin into a mold cavity; a compressed fiber mat 302 having a thickness tl4 may be placed between the mold top MT and the mold bottom MB.
  • the compressed fiber mat 302 may be placed between the mold top MT and the mold bottom MB; the mold top MT and the mold bottom MB may move between an open position and a closed position; the compressed fiber mat 302 may be further compressed between the mold top MT and the mold bottom MB.
  • the compressed fiber mat 302 may be heated prior to compression and forming.
  • the mold top MT may include a protrusion feature 310a, a depression feature 350a adjacent to the protrusion feature, and a depression feature 360a on the opposing side of the depression feature 350a.
  • the protrusion feature 310a may push material on the compressed fiber mat 302 aside to form the depression 310 on the instrument panel 300. See also FIGURE 7F.
  • excess material around the depression 310 on the compressed fiber mat 302 may be pushed into the depression 350a and the depression feature 360a to form the protrusion 350 adjacent to the depression 310 and the rib 360 also adjacent to the depression 310. See also FIGURE 7F.
  • resin R may be injected onto the backside of the compressed fiber mat 302 through the nozzle N.
  • the resin R may push down the excess material formed in the depression feature 360a.
  • the resin R may cure and harden. As shown
  • the instrument panel 300 may be formed with the depression 310, the protrusion 350 adjacent to the depression 310, and the rib 360 on the opposing side of the protrusion 350. See also FIGURE 5C.
  • instrument panel 300 may have a substantially consistent density throughout.
  • the smaller thickness at the depression 310 may reduce the strength of the local area at the depression 310; the greater thickness at the protrusion 350 may increase the strength of the local area adjacent to the depression 310; the resin rib 360 may increase the strength of the local area adjacent to the depression 310; the strength differential between depression 310 and the adjacent protrusion 350 and rib 360 may help directing the breakthrough energy of airbag towards depression 310 (i.e. the score line) during airbag deployment process.
  • the instrument panel 300 may provide a smooth visible surface 300v; additional material may not be required to cover the visible surface 300v of instrument panel 300.
  • the instrument panel 300 may comprise a thickness tl 5 at positions other than other than at the depression 310, the protrusion 350, and the rib 360; thickness tl 5 may be smaller than thickness tl4.
  • a mold apparatus may comprise mold top MT and mold bottom MB; the mold top MT may further comprises two nozzles N to inject plastic resin into a mold cavity; a compressed fiber mat 402 having a thickness tl6 may be placed between the mold top MT and the mold bottom MB.
  • the compressed fiber mat 402 may be placed between the mold top MT and the mold bottom MB; the mold top MT and the mold bottom MB may move between an open position and a closed position; the compressed fiber mat 402 may be further compressed between the mold top MT and the mold bottom MB.
  • the compressed fiber mat 402 may be heated prior to compression and forming.
  • the mold top MT may include a protrusion feature 410a and two depression features 460a adjacent to the protrusion feature 410a. As the compressed fiber mat 402 is further compressed within the mold cavity, the protrusion feature 410a may push material on the compressed fiber mat 402 aside to form the depression 410 on the instrument panel 400. See also FIGURE 8F.
  • the protrusion feature 410a may push material on the compressed fiber mat 402 aside to form the depression 410 on the instrument panel 400. See also FIGURE 8F.
  • excess material around the depression 410 on the compressed fiber mat 402 may be pushed into the depression features 460a.
  • resin R may be injected onto the backside of the compressed fiber mat 302 through the nozzles N.
  • the resin R may push down the excess material formed in depression features 460a.
  • the resin R may cure and harden.
  • the instrument panel 400 may be formed with the depression 410 and two ribs 460 adjacent to the depression 310. See also FIGURE 5D.
  • instrument panel 400 may have a substantially consistent density throughout the entire instrument panel 400.
  • the smaller thickness at depression 410 may reduce the strength of the local area at the depression 410; the resin ribs 460 may increase the strength of the local area adjacent to the depression 410; the strength differential between the depression 310 and the adjacent ribs 460 may help directing the breakthrough energy of airbag towards depression 410 (i.e. the score line) during airbag deployment process.
  • the instalment panel 400 may provide a smooth visible surface 400v; additional material may not be required to cover the visible surface 400v of the instrument panel 400.
  • the instrument panel 400 may comprise a thickness tl7 at positions other than other than at the depression 410 and the ribs 460; thickness tl7 may be smaller than thickness tl6.
  • FIGURES 9A and 9B show two flow charts illustrating methods of forming a vehicle trim component 200, 300, 400 according to exemplary embodiments.
  • method 900a may begin at step 902a when a mold comprising a first surface and a second surface is provided.
  • the second surface may comprise a protrusion and a depression.
  • a fiber panel may be disposed onto the first surface of the mold.
  • at least a first portion of the fiber panel may be compressed between the first surface and the second surface of the mold to form the fiber panel into a compression formed component.
  • a second portion of the fiber panel may be moved with the protrusion of the second surface of the mold to form a notch in the fiber panel.
  • the depression of the second surface of the mold may be filled with the second portion of the fiber panel to form a protrusion in the fiber panel; the protrusion in the fiber panel may be formed in response to forming the notch.
  • the vehicle trim component may be removed from the mold cavity.
  • method 900b begins in step 902b when a mold comprising a first surface and a second surface is provided.
  • the second surface may comprise a protrusion.
  • a fiber panel may be disposed onto the first surface of the mold.
  • at least a first portion of the fiber panel may be compressed between the first surface and the second surface of the mold to form the fiber panel into a compression formed component.
  • a second portion of the fiber panel may be moved with the protrusion of the second surface of the mold to form a notch in the fiber panel.
  • the notch can be configured to establish an opening in the vehicle trim component for deployment of an airbag through the vehicle trim component.
  • a resin may be injected into an opening between the fiber panel and the second surface of the mold to form a rib adjacent to the notch.
  • the resin may at least partially fill at least one void between the second surface of the mold and an uncompressed portion of the fiber panel to form the rib coupled to the compression formed component; the resin may combine with the uncompressed portion of the fiber panel to form the rib.
  • the vehicle trim component in step 912a, may be removed from the mold cavity.
  • a conventional trim panel is shown schematically as a conventional instrument panel 100 in FIGURE 10A.
  • the conventional instrument panel 100 provides a conventional notch 110.
  • the conventional instrument panel 100 also provides a protrusion 120 on the visible surface lOOv of the conventional instrument panel 100 opposite of the conventional notch 110.
  • the conventional instrument panel 100 has a smaller thickness t21 at the conventional notch 110 than thickness t20 at positions on the conventional instrument panel 100 other than the conventional notch 110.
  • the conventional instrument panel 100 also has a greater density at the conventional notch 110 due to the smaller thickness t21.
  • the greater density at the conventional notch 110 may increase the strength of the area around the conventional notch 110; a stronger notch 110 may require greater effort for an airbag to break through the conventional notch 110 during airbag deployment.
  • additional layers of material are required to cover and hide the protrusion 120 on the visible surface lOOv of the conventional instrument panel 100 for aesthetic reasons (e.g. to provide a smooth visible surface in the vehicle interior).
  • the conventional instrument panel 100 provides the conventional notch 110.
  • the conventional instrument panel 100 also provides a protrusion 130 on the visible surface lOOv of the conventional instrument panel 100 opposite of the conventional notch 110; the conventional instrument panel 100 also provides at least one protrusion 140 adjacent to protrusion 130 on the visible surface lOOv of the conventional instrument panel 100.
  • the protrusions 130 and 140 are defects that occur after de-molding the instrument panel 100 due to not having a relief for the material of the notch 110 flow into during formation of the notch 110.
  • the protrusions 130, 140 may extend into one another.
  • apparatus of the present inventions can comprise conventional technology (e.g. as implemented in present configuration) or any other applicable technology (present or future) that has the capability to perform the functions and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Instrument Panels (AREA)

Abstract

A trim component for a vehicle interior is disclosed. The trim panel is prepared from a fiber panel. The trim component may be formed by concurrent compression forming and injection molding of the fiber panel within a single mold apparatus. Thermoplastic resin may be melted and injected to the back side of the fiber panel to improve structural rigidity and create greater strength difference between adjacent areas. The trim panel may provide at least one score line on the back side configured to direct airbag deployment. The score line may be compression formed onto the backside of the trim panel. The score line may reduce the strength of the area of the trim panel near the score line. Less energy may be required to break through the trim panel during air bag deployment. The trim panel may also provide a smooth visible surface.

Description

PATENT APPLICATION
TRIM COMPONENT FOR VEHICLE INTERIOR
FIELD
[0001] The present invention relates to a trim component for a vehicle interior.
CROSS REFERENCE TO RELATED APPLICATIONS
[0002] The present application claims priority from and the benefit of and incorporates by reference in entirety of U.S. Provisional Patent Application No. 62/357,326 titled "TRIM COMPONENT FOR VEHICLE INTERIOR" filed December 10, 2014.
[0003] The present application is related to and incorporates by reference in entirety of International Application No. PCT/US 12/52534 titled "SYSTEM AND METHOD FOR MANUFACTURING A VEHICLE TRIM COMPONENT VIA CONCURRENT COMPRESSION FORMING AND INJECTION MOLDING" filed August 27, 2012.
BACKGROUND
[0004] It is known in vehicles to provide a trim component (e.g. trim panel) for a vehicle interior. Interior trim components are commonly provided as headliners, door panels, instrument panels, center consoles, and various other components in a vehicle. It is also known in vehicles to provide airbags behind the trim component. It is further known to provide a weakened area such as a score line in the trim component to direct the airbag during an airbag deployment process. It is further known to form the trim component by a compression forming process.
[0005] It would be advantageous to provide an improved trim component (e.g. trim panel or instrument panel) for a vehicle interior providing an exit for deployment of an airbag. It would also be advantageous to provide an improved trim component for a vehicle interior with an exit for deployment of an airbag that is not readily perceptible (e.g. having a smooth visible surface) from the vehicle interior. It would further be advantageous to provide an improved trim component with reduced break-through energy to facilitate effective airbag deployment. It would further be advantageous to manufacture an improved trim component in a single mold apparatus.
SUMMARY
[0006] The present invention relates to a vehicle trim component configured to support an airbag module providing an airbag and comprising a panel comprised of fibers; the panel may comprise a notch and at least one feature adjacent the notch. The notch may be configured to direct deployment of the airbag through the panel. The feature may comprise a protrusion configured to provide a relief for the notch. The protrusion may be configured to direct deployment of the airbag through the panel. The vehicle trim component may comprise a rib adjacent the notch; the rib may be configured to direct deployment of the airbag through the panel. The rib may be formed on the panel; the rib may comprise resin. The feature may comprise a rib configured to direct deployment of the airbag through the panel. The rib may be formed on the panel; the rib may comprise a resin portion comprising resin and a fiber portion comprising fibers of the panel.
[0007] The present invention also relates to a vehicle trim component configured to support an airbag module providing an airbag and comprising a panel comprised of fibers. The panel may comprise a first portion comprising a first thickness, a second portion comprising a second thickness, and a third portion comprising a third thickness. The first portion of the panel may comprise a majority of the panel; the second thickness may be less than the first thickness; the third thickness may be greater than the first thickness. The second portion of the panel may be configured to direct deployment of the airbag through the panel. The first portion, the second portion and the third portion may comprise a substantially constant density. The third portion may extend from the second portion; the third portion may be adjacent the second portion. The second portion and the third portion may be formed concurrently. The third portion may be formed in response to formation of the second portion. [0008] The present invention also relates to a vehicle trim component prepared by a process comprising: (a) disposing a fiber panel onto a first surface of a mold; (b) compressing a first portion of the fiber panel between the first surface and a second surface of the mold to form the fiber panel into a compression formed component; (c) forming a second portion of the fiber panel between the first surface and the second surface of the mold to form a notch in the compression formed component and at least one protrusion in the compression formed component; (d) removing the vehicle trim component from the mold cavity. The at least one protrusion may be formed in response to forming of the notch; the notch and the protrusion may be configured to direct deployment of an airbag through the vehicle trim component. The vehicle trim component may comprise injecting resin into the mold to at least partially fill at least one void between the second surface of the mold and an uncompressed portion of the compression formed component to form a rib coupled to the compression formed component; the resin may be injected after the compression formed component is formed. The resin may combine with the uncompressed portion of the compression formed component to form the rib; the rib may be configured to direct deployment of an airbag through the vehicle trim component. The notch may be formed by a mold protrusion formed on the second surface of the mold and the protrusion may be formed by a recess formed on the second surface of the mold.
[0009] The present invention also relates to a method of manufacturing a vehicle trim
component comprising: (a) providing a mold comprising a first surface and a second surface comprising a protrusion and a depression; (b) disposing a fiber panel onto the first surface of a mold; (c) compressing at least a first portion of the fiber panel between the first surface and the second surface of the mold; (d) moving a second portion of the fiber panel with the protrusion of the second surface of the mold to form a notch in the fiber panel; (e) filling the depression of the second surface of the mold with the second portion of the fiber panel to form a protrusion in the fiber panel; (f) removing the vehicle trim component from the mold cavity. The notch may be configured to establish an opening in the vehicle trim component for deployment of an airbag through the vehicle trim component.
[0010] The present invention further relates to a vehicle trim component comprising a panel comprised of fibers; the panel may comprise a visible side and a non-visible side. The panel may be configured to support an airbag module providing an airbag on the non-visible side of the panel. The panel may comprise a notch and at least one feature adjacent the notch; the notch and the at least one feature may be formed on the non-visible side of the panel. The visible side may comprise a smooth visible surface; the feature may be configured to direct deployment of the airbag through the panel.
FIGURES
[0011] FIGURE 1 A is a schematic perspective view of a vehicle according to an exemplary embodiment.
[0012] FIGURE IB is a schematic perspective cut-away view of a vehicle showing a vehicle interior according to an exemplary embodiment.
[0013] FIGURE 2A is a schematic perspective view of an instrument panel for a vehicle interior showing an airbag exit according to an exemplary embodiment.
[0014] FIGURE 2B is a schematic perspective detail view of an instrument panel for a vehicle interior showing an airbag exit according to an exemplary embodiment.
[0015] FIGURES 2C to 2E are schematic perspective detail views of an airbag deployment process according to an exemplary embodiment.
[0016] FIGURES 3A to 3C are schematic perspective views of a fiber mat being trimmed and compressed into a compressed fiber mat according to an exemplary embodiment.
[0017] FIGURES 4A to 4C are schematic perspective views of a compressed fiber mat formed into an instrument panel according to an exemplary embodiment.
[0018] FIGURES 4D and 4E are schematic perspective detail views of ancillary features on an instrument panel according to an exemplary embodiment.
[0019] FIGURE 5A is a schematic cross-section view of a vehicle interior trim component according to an exemplary embodiment.
[0020] FIGURES 5B to 5D are schematic partial cross-section views of a vehicle interior trim component according to an exemplary embodiment.
[0021] FIGURES 6A to 6E are schematic cross-section views of a molding process for a vehicle interior trim component according to an exemplary embodiment. [0022] FIGURES 7 A to 7F are schematic partial cross-section views of a molding process for a vehicle interior trim component according to an exemplary embodiment.
[0023] FIGURES 8A to 8F are schematic partial cross-section views of a molding process for a vehicle interior trim component according to an exemplary embodiment.
[0024] FIGURES 9A and 9B are schematic flow diagrams for forming a vehicle interior trim component according to an exemplary embodiment.
[0025] FIGURE 10A is a schematic cross-section view of a conventional vehicle interior trim component according to an exemplary embodiment.
[0026] FIGURES 10B and IOC are schematic partial cross-section views of a conventional vehicle interior trim component according to an exemplary embodiment.
DESCRIPTION
[0027] Referring to FIGURES 1 A and IB, a vehicle V is shown including an interior with an instrument panel IP and doors D. According to an exemplary embodiment, interior components of vehicle V such as instrument panel IP and doors D may include trim panels made with a mixture of fiber and plastic. According to an exemplary embodiment, instrument panel IP and doors D may provide visible surfaces in the vehicle interior of vehicle V. According to an exemplary embodiment, instrument panel IP and/or doors D may provide at least one airbag behind the visible surfaces; instrument panel IP and/or doors D may provide a weakened area to aid the airbag in breaking through the trim panel during airbag deployment. See FIGURES 2A to 2E.
[0028] According to an exemplary embodiment as shown schematically in FIGURES 2A and 2B, instrument panel IP may provide a weakened shape/zone shown as an airbag exit 10 to facilitate the airbag deployment. According to an exemplary embodiment, the airbag exit 10 may be weakened by providing a score line behind the visible surface of instrument panel IP. As shown schematically in FIGURES 2A to 2C, airbag exit 10 may include an "H" shape pattern. According to an exemplary embodiment, the airbag exit may have a "U" shape pattern, a "bow tie" shape pattern, or any pattern suitable for airbag deployment.
[0029] According to an exemplary embodiment as shown schematically in FIGURE 2C, airbag exit 10 may partially open during airbag deployment. According to an exemplary embodiment as shown schematically in FIGURE 2D, an airbag AB may deploy through an opening generated through the airbag exit 10 (i.e. the weakened area) on the instrument panel IP. FIGURE 2D illustrates airbag AB as being partially inflated according to an exemplary embodiment. According to an exemplary embodiment as shown schematically in FIGURE 2E, airbag AB may fully inflate through the opening on instrument panel IP.
[0030] According to an exemplary embodiment as shown schematically in FIGURE 3 A, a fiber mat 301 may include a combination of fibers (e.g. natural and/or synthetic fibers) and thermoplastic resin (e.g. polypropylene (PP), acrylonitrile butadiene styrene (ABS),
polycarbonate (PC), etc.). According to an exemplary embodiment as shown schematically in FIGURE 3B, fiber mat 301 may be trimmed into a fiber mat 301a; the instrument panel IP may comprise the trimmed fiber mat 301a. According to an exemplary embodiment, the trimmed fiber mat 301a may have a thickness tl . According to an exemplary embodiment, fiber mat 301a may be heated to induce the thermoplastic resin to liquefy. According to an exemplary embodiment as shown schematically in FIGURE 3C, fiber mat 301a may be heated and partially compressed into a compressed fiber mat 301b. According to an exemplary embodiment, fiber mat 301a may be placed into a low-temperature mold and compression molded into a desired shape. According to an exemplary embodiment, as compressed fiber mat 301b cools, the thermoplastic within fiber mat 301b solidifies to establish a substantially rigid composite panel. According to an exemplary embodiment, the compressed fiber mat 301b may have a thickness t2, which may be smaller than the thickness tl .
[0031] According to an exemplary embodiment, fiber mat 301a may include a combination of structural fibers and thermoset resin (e.g. epoxy, polyester, etc.). According to an exemplary embodiment, fiber mat 301a may be compressed within a heated mold to form a partially compressed fiber mat 301b with a desired shape and to induce curing of the thermoset resin. According to an exemplary embodiment, a substantially rigid composite panel may be formed after the thermoset resin is cured. [0032] According to an exemplary embodiment as shown schematically in FIGURE 4A, a compressed fiber mat 302 may be heated in an oven OV. As shown schematically in FIGURE 4B, the hot compressed fiber mat 302 may be transferred into a mold having a mold top MT NS mold bottom MB. According to an exemplary embodiment as shown schematically in FIGURE 4C, a trim component shown as an instrument panel 300 may be produced by a process of concurrent compression forming and injection molding. According to an exemplary
embodiment, the heated compressed fiber mat 302 may be further compressed into a fiber panel 311; plastic resin may be injected on the back side of fiber panel 311 to form an ancillary feature shown as an airbag exit 10. According to an exemplary embodiment as shown schematically in FIGURE 4C, instrument panel 300 may provide airbag exit 10 configured to facilitate airbag deployment. According to an exemplary embodiment as shown schematically in FIGURES 4D and 4E, instrument panel 300 may provide ancillary features shown as plastic ribs 360 on the backside of fiber panel 311 to improve structural integrity and rigidity. According to an exemplary embodiment, the fiber panel 311 may be configured to support an airbag chute AC (i.e. airbag module) comprising an airbag. As shown schematically in FIGURE 4D, plastic ribs 360 may be placed on the backside of the airbag exit 10 to provide structural support for the airbag chute AC. According to an exemplary embodiment, a plastic rib 360 may be placed at any location on the backside of a fiber panel (e.g. along the edge of the fiber panel 311, in the middle of the fiber panel 311, etc.). According to an exemplary embodiment, multiple plastic ribs 360 may be placed at various different locations on the backside of a fiber panel 311.
[0033] According to an exemplary embodiment, plastic ribs 360 may improve structural integrity of instrument panel 300. According to an exemplary embodiment, instrument panel 300 may be able to maintain structural integrity during an airbag deployment; the position/placement of plastic ribs 360 may be intended to create a strength differential between different areas of instrument panel 300; energy needed for airbag to break through instrument panel 300 may be directed to the airbag exit 10 on instrument panel 300; plastic ribs 360 on the backside of instrument panel 300 may help prevent or minimize instrument panel 300 from ripping or tearing at any location other than the airbag exit 10 (i.e. score line) during an airbag deployment.
According to an exemplary embodiment as shown schematically in FIGURE 4E, plastic ribs 360 on the backside of fiber panel 311 may form a honeycomb shaped pattern to improve structural integrity and rigidity. According to an exemplary embodiment, the plastic ribs 360 may be formed in any configuration according to the specific application (e.g. ancillary features for attaching air vents, speakers or infotainment system, etc.).
[0034] According to an exemplary embodiment, the trim panel shown as an instrument panel 200 is shown schematically in FIGURE 5A. According to an exemplary embodiment, instrument panel 200 may comprise a compressed fiber mat and a visible surface 200v.
According to an exemplary embodiment, the visible surface 200v may include a cover, such as leather or other aesthetically-pleasing material.
[0035] According to an exemplary embodiment, an instrument panel 200 is shown schematically in FIGURE 5B. According to an exemplary embodiment, instrument panel 200 may comprise a compressed fiber mat. According to an exemplary embodiment as shown schematically in FIGURE 5B, instrument panel 200 may provide a notch 210. According to an exemplary embodiment, the notch 210 may be configured to provide a weakened area within the instrument panel 200; the weakened area at the notch 210 may aid airbag deployment. According to an exemplary embodiment as shown schematically in FIGURE 5B, the instrument panel 200 may also provide protrusions 250 (i.e. feature) behind the visible surface 200v of the instrument panel 200 adjacent to the notch 210. As shown schematically in FIGURE 5B, the instrument panel 200 may have a smaller thickness t4 at the notch 210 than thickness t3 at positions on the instrument panel 200 other than at the notch 210 and the protrusions 250; the instrument panel 200 also may have a greater thickness t5 at protrusions 250 adjacent to notch 210 than thickness t3 at positions on the instrument panel 200 other than at the notch 210 and the protrusions 250; material at the notch 210 may be pushed aside during compression forming to protrusions 250 adjacent to notch 210; the protrusions 250 may provide relief for the notch 210. See also FIGURES 6B to 6E. According to an exemplary embodiment as shown schematically in FIGURE 5B, the instrument panel 200 may have a substantially consistent density throughout . According to an exemplary embodiment, the smaller thickness t4 at notch 210 may reduce the strength of the local area at the notch 210; the greater thickness t5 at the protrusions 250 may increase the strength of the local areas adjacent to the notch 210; the strength differential between the notch 210 and the adjacent protrusions 250 may help directing the breakthrough of airbag towards the notch 210 during the airbag deployment process.
[0036] According to an exemplary embodiment, the instrument panel 200 may include a first portion having a first thickness t3, a second portion (notch 210) having a second thickness t4, and a third portion (protrusions 250) comprising a third thickness t5. According to an exemplary embodiment, the first portion may be a majority of the panel; the second thickness may be substantially less than the first thickness; the third thickness may be substantially greater than the first thickness; the second portion (protrusions 250) may be configured to direct deployment of the airbag through the instrument panel 200. According to an exemplary embodiment, the first portion, the second portion, and the third portion may comprise a substantially constant density. According to an exemplary embodiment, the third portion (protrusion 250) may extend from the second portion (notch 210); the third portion (protrusion 250) may be adjacent the second portion (notch 210); the third portion (protrusion 250) and the second portion (notch 210) may be formed concurrently; and third portion (protrusion 250) may be formed in response to formation of the second portion (notch 210).
[0037] According to an exemplary embodiment as shown schematically in FIGURE 5B, the instrument panel 200 may provide a smooth visible surface 200v; additional material may not be required to cover the visible surface 200v of instrument panel 200. See also FIGURES 6A to 6E.
[0038] According to an exemplary embodiment, a trim panel shown as an instrument panel 300 may comprise a compressed fiber mat. See FIGURES 4A to 4E. As shown schematically in FIGURE 5C, the instrument panel 300 may provide a depression 310. According to an exemplary embodiment, the depression 310 may be configured to provide a weakened area within the instrument panel 300; the weakened area at the depression 310 may aid airbag deployment. According to an exemplary embodiment as shown schematically in FIGURE 5C, the instrument panel 300 may also provide a protrusion 350 and a rib 360 formed on the instrument panel 300 behind a visible surface 300v of the instrument panel 300 adjacent to the depression 310. According to an exemplary embodiment, resin may be injection molded onto the backside of the instrument panel 300 to form the rib 360; the rib 360 may comprise a resin portion that may comprise resin and a fiber portion that may comprise fibers of the instrument panel 300. See also FIGURES 7D to 7F. According to an exemplary embodiment as shown schematically in FIGURE 5C, the instrument panel 300 may have a smaller thickness t6 at the depression 310 than thickness t3 at positions on the instrument panel 300 other than at the depression 310, the protrusion 350, and the rib 360; the instrument panel 300 also has a greater thickness t7 at protrusion 350 than thickness t3 at positions on the instrument panel 200 other than at the depression 310, the protrusion 350, and the rib 360; the rib 360 adjacent to the depression 310 may be formed to have a thickness t8; material at depression 310 may be pushed aside during compression forming toward protrusion 350 and rib 360 adjacent to depression 310. See also FIGURES 7D to 7F.
[0039] According to an exemplary embodiment, a trim panel shown as an instrument panel 400 may comprise a compressed fiber mat. See FIGURES 4A to 4E. As shown schematically in FIGURE 5D according to an exemplary embodiment, the instrument panel 400 may provide a depression 410. According to an exemplary embodiment, the depression 410 may be configured to provide a weakened area within the instrument panel 400; the weakened area at the depression 410 may aid airbag deployment. According to an exemplary embodiment as shown
schematically in FIGURE 5D, the instrument panel 400 may also provide a rib 460 and a rib 460 behind a visible surface 400v of instrument panel 400 adjacent to depression 410. According to an exemplary embodiment, resin may be injection molded onto the backside of the instrument panel 400 to form the rib 460 and the rib 460. See also FIGURES 8D to 8F. According to an exemplary embodiment as shown schematically in FIGURE 5D, the instrument panel 400 may have a smaller thickness tlO at the depression 410 than thickness t3 at positions on the instrument panel 400 other than at the depression 410 and the ribs 460; the rib 460 and the rib 460 adjacent to the depression 310 may be formed to have a thickness tl 1; material at depression 410 may be pushed aside during compression forming toward the ribs 460 adjacent to the depression 410. See also FIGURES 8D to 8F.
[0040] According to an exemplary embodiment as shown schematically in FIGURE 6A, a mold apparatus may comprise a mold top MT and a mold bottom MB; a compressed fiber mat 202 having a thickness tl2 may be placed between mold top MT and mold bottom MB. See also FIGURE 4B.
[0041] According to an exemplary embodiment as shown schematically in FIGURES 6B to 6D, the compressed fiber mat 202 may be placed between the mold top MT and the mold bottom MB; the mold top MT and the mold bottom MB may move between an open position to a closed position; the compressed fiber mat 202 may be further compressed and shaped between the mold top MT and the mold bottom MB. According to an exemplary embodiment, the compressed fiber mat 202 may be heated prior to compression and forming. According to an exemplary embodiment as shown schematically in FIGURES 6A to 6D, the mold top MT may include a protrusion feature 210a and two depression features 250a adjacent to the protrusion feature 210a. As the compressed fiber mat 202 is being compressed, the protrusion 210a may push material on the compressed fiber mat 202 aside to form a notch 210 and protrusions 250 on the instrument panel 200. See FIGURE 6E. According to an exemplary embodiment, excessive material around notch 210 on compressed fiber mat 202 may be pushed into the depressions 250a to form the protrusions 250 adjacent to the notch 210. See FIGURES 6C to 6E. According to an exemplary embodiment as shown schematically in FIGURE 6E, the instrument panel 200 may be formed with the notch 210 and two protrusions 250 adjacent to the notch 210. See also FIGURE 5D. According to an exemplary embodiment, the instrument panel 200 may comprise a thickness tl3 at positions other than other than at the notch 210 and the protrusions 250; thickness tl3 may be smaller than thickness tl2.
[0042] According to an exemplary embodiment as shown schematically in FIGURE 7A, a mold apparatus may comprise a mold top MT and mold bottom MB; the mold top MT may further comprise a nozzle N to inject plastic resin into a mold cavity; a compressed fiber mat 302 having a thickness tl4 may be placed between the mold top MT and the mold bottom MB.
[0043] According to an exemplary embodiment as shown schematically in FIGURES 7A to 7C, the compressed fiber mat 302 may be placed between the mold top MT and the mold bottom MB; the mold top MT and the mold bottom MB may move between an open position and a closed position; the compressed fiber mat 302 may be further compressed between the mold top MT and the mold bottom MB. According to an exemplary embodiment, the compressed fiber mat 302 may be heated prior to compression and forming. According to an exemplary embodiment as shown schematically in FIGURES 7A to 7F, the mold top MT may include a protrusion feature 310a, a depression feature 350a adjacent to the protrusion feature, and a depression feature 360a on the opposing side of the depression feature 350a. According to an exemplary embodiment, as the compressed fiber mat 302 is further compressed within the mold cavity, the protrusion feature 310a may push material on the compressed fiber mat 302 aside to form the depression 310 on the instrument panel 300. See also FIGURE 7F. As shown schematically in FIGURE 7C, excess material around the depression 310 on the compressed fiber mat 302 may be pushed into the depression 350a and the depression feature 360a to form the protrusion 350 adjacent to the depression 310 and the rib 360 also adjacent to the depression 310. See also FIGURE 7F. According to an exemplary embodiment as shown schematically in FIGURE 7D , resin R may be injected onto the backside of the compressed fiber mat 302 through the nozzle N. According to an exemplary embodiment, the resin R may push down the excess material formed in the depression feature 360a. According to an exemplary embodiment as shown schematically in FIGURE 7E, the resin R may cure and harden. As shown
schematically in FIGURE 7F, the instrument panel 300 may be formed with the depression 310, the protrusion 350 adjacent to the depression 310, and the rib 360 on the opposing side of the protrusion 350. See also FIGURE 5C. According to an exemplary embodiment, as shown schematically in FIGURE 7F, instrument panel 300 may have a substantially consistent density throughout. According to an exemplary embodiment, the smaller thickness at the depression 310 may reduce the strength of the local area at the depression 310; the greater thickness at the protrusion 350 may increase the strength of the local area adjacent to the depression 310; the resin rib 360 may increase the strength of the local area adjacent to the depression 310; the strength differential between depression 310 and the adjacent protrusion 350 and rib 360 may help directing the breakthrough energy of airbag towards depression 310 (i.e. the score line) during airbag deployment process. According to an exemplary embodiment as shown schematically in FIGURE 7F, the instrument panel 300 may provide a smooth visible surface 300v; additional material may not be required to cover the visible surface 300v of instrument panel 300. According to an exemplary embodiment, the instrument panel 300 may comprise a thickness tl 5 at positions other than other than at the depression 310, the protrusion 350, and the rib 360; thickness tl 5 may be smaller than thickness tl4.
[0044] As shown schematically in FIGURE 8A, a mold apparatus may comprise mold top MT and mold bottom MB; the mold top MT may further comprises two nozzles N to inject plastic resin into a mold cavity; a compressed fiber mat 402 having a thickness tl6 may be placed between the mold top MT and the mold bottom MB.
[0045] According to an exemplary embodiment as shown schematically in FIGURES 8A to 8C, the compressed fiber mat 402 may be placed between the mold top MT and the mold bottom MB; the mold top MT and the mold bottom MB may move between an open position and a closed position; the compressed fiber mat 402 may be further compressed between the mold top MT and the mold bottom MB. According to an exemplary embodiment, the compressed fiber mat 402 may be heated prior to compression and forming. According to an exemplary embodiment as shown schematically in FIGURES 8A to 8F, the mold top MT may include a protrusion feature 410a and two depression features 460a adjacent to the protrusion feature 410a. As the compressed fiber mat 402 is further compressed within the mold cavity, the protrusion feature 410a may push material on the compressed fiber mat 402 aside to form the depression 410 on the instrument panel 400. See also FIGURE 8F. According to an exemplary
embodiment as shown schematically in FIGURE 8C, excess material around the depression 410 on the compressed fiber mat 402 may be pushed into the depression features 460a. According to an exemplary embodiment as shown schematically in FIGURE 8D, resin R may be injected onto the backside of the compressed fiber mat 302 through the nozzles N. According to an exemplary embodiment, the resin R may push down the excess material formed in depression features 460a. According to an exemplary embodiment as shown schematically in FIGURE 8E, the resin R may cure and harden. As shown schematically in FIGURE 8F, the instrument panel 400 may be formed with the depression 410 and two ribs 460 adjacent to the depression 310. See also FIGURE 5D. According to an exemplary embodiment as shown schematically in FIGURE 8F, instrument panel 400 may have a substantially consistent density throughout the entire instrument panel 400. According to an exemplary embodiment, the smaller thickness at depression 410 may reduce the strength of the local area at the depression 410; the resin ribs 460 may increase the strength of the local area adjacent to the depression 410; the strength differential between the depression 310 and the adjacent ribs 460 may help directing the breakthrough energy of airbag towards depression 410 (i.e. the score line) during airbag deployment process. According to an exemplary embodiment as shown schematically in FIGURE 8F, the instalment panel 400 may provide a smooth visible surface 400v; additional material may not be required to cover the visible surface 400v of the instrument panel 400. According to an exemplary embodiment, the instrument panel 400 may comprise a thickness tl7 at positions other than other than at the depression 410 and the ribs 460; thickness tl7 may be smaller than thickness tl6.
[0046] FIGURES 9A and 9B show two flow charts illustrating methods of forming a vehicle trim component 200, 300, 400 according to exemplary embodiments.
[0047] According to an exemplary embodiment, method 900a (FIGURE 9A) may begin at step 902a when a mold comprising a first surface and a second surface is provided. According to an exemplary embodiment, the second surface may comprise a protrusion and a depression.
According to an exemplary embodiment, in step 904a, a fiber panel may be disposed onto the first surface of the mold. According to an exemplary embodiment, in step 906a, at least a first portion of the fiber panel may be compressed between the first surface and the second surface of the mold to form the fiber panel into a compression formed component. According to an exemplary embodiment, in step 908a, a second portion of the fiber panel may be moved with the protrusion of the second surface of the mold to form a notch in the fiber panel. According to an exemplary embodiment, in step 910a, the depression of the second surface of the mold may be filled with the second portion of the fiber panel to form a protrusion in the fiber panel; the protrusion in the fiber panel may be formed in response to forming the notch. Subsequently, according to an exemplary embodiment, in step 912a, the vehicle trim component may be removed from the mold cavity.
[0048] According to an exemplary embodiment, method 900b (FIGURE 9B) begins in step 902b when a mold comprising a first surface and a second surface is provided. According to an exemplary embodiment, the second surface may comprise a protrusion. According to an exemplary embodiment, in step 904b, a fiber panel may be disposed onto the first surface of the mold. According to an exemplary embodiment, in step 906b, at least a first portion of the fiber panel may be compressed between the first surface and the second surface of the mold to form the fiber panel into a compression formed component. According to an exemplary embodiment, in step 908b, a second portion of the fiber panel may be moved with the protrusion of the second surface of the mold to form a notch in the fiber panel. According to an exemplary embodiment, the notch can be configured to establish an opening in the vehicle trim component for deployment of an airbag through the vehicle trim component. According to an exemplary embodiment, in step 910b, a resin may be injected into an opening between the fiber panel and the second surface of the mold to form a rib adjacent to the notch. According to an exemplary embodiment, the resin may at least partially fill at least one void between the second surface of the mold and an uncompressed portion of the fiber panel to form the rib coupled to the compression formed component; the resin may combine with the uncompressed portion of the fiber panel to form the rib. According to an exemplary embodiment, in step 912a, the vehicle trim component may be removed from the mold cavity.
[0049] According to a conventional embodiment, a conventional trim panel is shown schematically as a conventional instrument panel 100 in FIGURE 10A. According to the conventional embodiment as shown schematically in FIGURE 10B, the conventional instrument panel 100 provides a conventional notch 110. As shown schematically in FIGURE 10B, the conventional instrument panel 100 also provides a protrusion 120 on the visible surface lOOv of the conventional instrument panel 100 opposite of the conventional notch 110. As shown schematically in FIGURE 10B, the conventional instrument panel 100 has a smaller thickness t21 at the conventional notch 110 than thickness t20 at positions on the conventional instrument panel 100 other than the conventional notch 110. According to the conventional embodiment, the conventional instrument panel 100 also has a greater density at the conventional notch 110 due to the smaller thickness t21. According to the conventional embodiment, the greater density at the conventional notch 110 may increase the strength of the area around the conventional notch 110; a stronger notch 110 may require greater effort for an airbag to break through the conventional notch 110 during airbag deployment. According to the conventional embodiment, additional layers of material are required to cover and hide the protrusion 120 on the visible surface lOOv of the conventional instrument panel 100 for aesthetic reasons (e.g. to provide a smooth visible surface in the vehicle interior).
[0050] As shown schematically in FIGURE IOC, the conventional instrument panel 100 provides the conventional notch 110. As shown schematically in FIGURE IOC, the conventional instrument panel 100 also provides a protrusion 130 on the visible surface lOOv of the conventional instrument panel 100 opposite of the conventional notch 110; the conventional instrument panel 100 also provides at least one protrusion 140 adjacent to protrusion 130 on the visible surface lOOv of the conventional instrument panel 100. According to the conventional embodiment, the protrusions 130 and 140 are defects that occur after de-molding the instrument panel 100 due to not having a relief for the material of the notch 110 flow into during formation of the notch 110. According to the conventional embodiments, the protrusions 130, 140 may extend into one another. According to the conventional embodiment, additional material is required to cover and hide protrusion 130 and protrusions 140 on the visible surface lOOv of the conventional instrument panel 100 (e.g. to provide a smooth visible surface in the vehicle interior). [0051] It is important to note that the construction and arrangement of the elements of the inventive concepts and inventions as described in this application and as shown in the figures above is illustrative only. Although some embodiments of the present inventions have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter recited. Accordingly, all such
modifications are intended to be included within the scope of the present inventions. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the preferred and other exemplary embodiments without departing from the spirit of the present inventions.
[0052] It is important to note that the apparatus of the present inventions can comprise conventional technology (e.g. as implemented in present configuration) or any other applicable technology (present or future) that has the capability to perform the functions and
processes/operations indicated in the FIGURES. All such technology is considered to be within the scope of the present inventions and application.

Claims

1. A vehicle trim component (1) configured to support an airbag module providing an airbag and (2) comprising a panel comprised of fibers;
wherein the panel comprises a notch and at least one feature adjacent the notch.
2. The vehicle trim component of Claim 1 wherein the notch is configured to direct deployment of the airbag through the panel.
3. The vehicle trim component of Claim 1 wherein the feature comprises a protrusion configured to provide a relief for the notch.
4. The vehicle trim component of Claim 3 wherein the protrusion is configured to direct deployment of the airbag through the panel.
5. The vehicle trim component of Claim 3 further comprising a rib adjacent the notch.
6. The vehicle trim component of Claim 5 wherein the rib is configured to direct deployment of the airbag through the panel.
7. The vehicle trim component of Claim 5 wherein the rib is formed on the panel.
8. The vehicle trim component of Claim 5 wherein the rib comprises resin.
9. The vehicle trim component of Claim 1 wherein the feature comprises a rib configured to direct deployment of the airbag through the panel.
10. The vehicle trim component of Claim 9 wherein the rib is formed on the panel.
11. The vehicle trim component of Claim 9 wherein the rib comprises a resin portion comprising resin and a fiber portion comprising fibers of the panel.
12. A vehicle trim component (1) configured to support an airbag module providing an airbag and (2) comprising a panel comprised of fibers;
wherein the panel comprises:
(a) a first portion comprising a first thickness,
(b) a second portion comprising a second thickness, and
(c) a third portion comprising a third thickness;
wherein the first portion of the panel comprises a majority of the panel;
wherein the second thickness is less than the first thickness;
wherein the third thickness is greater than the first thickness;
wherein the second portion of the panel is configured to direct deployment of the airbag through the panel.
13. The vehicle trim component of Claim 12 wherein the first portion, the second portion and the third portion comprise a substantially constant density.
14. The vehicle trim component of Claim 12 wherein the third portion extends from the second portion.
15. The vehicle trim component of Claim 12 wherein the third portion is adjacent the second portion.
16. The vehicle trim component of Claim 12 wherein the second portion and the third portion are formed concurrently.
17. The vehicle trim component of Claim 12 wherein the third portion is formed in response to formation of the second portion.
18. A vehicle trim component prepared by a process comprising:
(a) disposing a fiber panel onto a first surface of a mold;
(b) compressing a first portion of the fiber panel between the first surface and a
second surface of the mold to form the fiber panel into a compression formed component;
(c) forming a second portion of the fiber panel between the first surface and the
second surface of the mold to form a notch in the compression formed component and at least one protrusion in the compression formed component;
(d) removing the vehicle trim component from the mold cavity.
19. The vehicle trim component of Claim 18 wherein the at least one protrusion is formed in response to forming of the notch.
20. The vehicle trim component of Claim 18 wherein the notch and the protrusion are configured to direct deployment of an airbag through the vehicle trim component.
21. The vehicle trim component of Claim 18 further comprising injecting resin into the mold to at least partially fill at least one void between the second surface of the mold and an uncompressed portion of the compression formed component to form a rib coupled to the compression formed component, wherein the resin is injected after the compression formed component is formed.
22. The vehicle trim component of Claim 21 wherein the resin combines with the uncompressed portion of the compression formed component to form the rib.
23. The vehicle trim component of Claim 21 wherein the rib is configured to direct deployment of an airbag through the vehicle trim component.
24. The vehicle trim component of Claim 21 wherein the notch is formed by a mold protrusion formed on the second surface of the mold and the protrusion is formed by a recess formed on the second surface of the mold.
25. A method of manufacturing a vehicle trim component comprising:
(a) providing a mold comprising a first surface and a second surface comprising a protrusion and a depression;
(b) disposing a fiber panel onto the first surface of a mold;
(c) compressing at least a first portion of the fiber panel between the first surface and the second surface of the mold;
(d) moving a second portion of the fiber panel with the protrusion of the second
surface of the mold to form a notch in the fiber panel;
(e) filling the depression of the second surface of the mold with the second portion of the fiber panel to form a protrusion in the fiber panel;
(f) removing the vehicle trim component from the mold cavity.
26. The method of Claim 25 wherein the notch is configured to establish an opening in the vehicle trim component for deployment of an airbag through the vehicle trim component.
27. A vehicle trim component comprising:
(a) a panel comprised of fibers;
wherein the panel comprises a visible side and a non-visible side;
wherein the panel is configured to support an airbag module providing an airbag on the non-visible side of the panel;
wherein the panel comprises a notch and at least one feature adjacent the notch; and wherein the notch and the at least one feature are formed on the non-visible side of the panel.
28. The vehicle trim component of Claim 27 wherein the visible side comprises a smooth visible surface.
29. The vehicle trim component of Claim 27 wherein the feature is configured to direct deployment of the airbag through the panel.
PCT/US2017/038572 2016-06-30 2017-06-21 Trim component for vehicle interior WO2018005197A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17820953.2A EP3478539B1 (en) 2016-06-30 2017-06-21 Trim component for vehicle interior
CN201780040512.2A CN109451736B (en) 2016-06-30 2017-06-21 Trim component for a vehicle interior
US16/220,863 US10926732B2 (en) 2016-06-30 2018-12-14 Vehicle interior component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662357326P 2016-06-30 2016-06-30
US62/357,326 2016-06-30

Related Child Applications (1)

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WO2018005197A1 true WO2018005197A1 (en) 2018-01-04
WO2018005197A8 WO2018005197A8 (en) 2019-02-14

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EP (1) EP3478539B1 (en)
CN (1) CN109451736B (en)
WO (1) WO2018005197A1 (en)

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EP3478539B1 (en) 2021-07-21
EP3478539A4 (en) 2020-01-15
EP3478539A1 (en) 2019-05-08
CN109451736B (en) 2022-11-22
US10926732B2 (en) 2021-02-23
CN109451736A (en) 2019-03-08
US20190118756A1 (en) 2019-04-25

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