CN102781732A - 车辆用内装板及气囊装置 - Google Patents

车辆用内装板及气囊装置 Download PDF

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CN102781732A
CN102781732A CN2011800121053A CN201180012105A CN102781732A CN 102781732 A CN102781732 A CN 102781732A CN 2011800121053 A CN2011800121053 A CN 2011800121053A CN 201180012105 A CN201180012105 A CN 201180012105A CN 102781732 A CN102781732 A CN 102781732A
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molten
rib
applies
connectivity slot
applying
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CN102781732B (zh
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菅野裕基
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Joyson Safety Systems Japan GK
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Takata Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215Arrangements 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23Particular 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
    • B29C66/234Particular 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/301Three-dimensional joints, i.e. the joined area being substantially non-flat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/302Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022Particular 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
    • B29C66/30223Particular 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/342Preventing air-inclusions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/54Joining 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
    • B29C66/542Joining 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 joining hollow covers or hollow bottoms to open ends of container bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/54Joining 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
    • B29C66/543Joining 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 joining more than two hollow-preforms to form said hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/54Joining 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
    • B29C66/545Joining 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 one hollow-preform being placed inside the other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13Single 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
    • B29C66/131Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/95Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9512Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration frequency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/95Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9516Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/30Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005Body finishings
    • B29L2031/3038Air bag covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215Arrangements 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
    • B60R2021/21537Arrangements 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 hinges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215Arrangements 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
    • B60R21/2165Arrangements 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

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

Abstract

本发明提供一种能够抑制熔敷强度的降低及板刚性的降低的车辆用内装板及气囊装置。在车辆用内装板(6)上,在铰接板部(7c)的接合面上形成有第一熔敷肋(7e)、第二熔敷肋(7g)及第三熔敷肋(7h),第一熔敷肋(7e)具有将相邻的格子(7f,7f)之间连通的第一连通槽(7i),第二熔敷肋(7g)具有将相邻的格子(7f,7f)之间连通的第二连通槽(7j),第三熔敷肋(7h)具有形成于与铰接部(7b)大致垂直的边上的第三连通槽(7k),第二连通槽(7j)以在与第二熔敷肋(7g)正交的方向上不连续地排列的方式形成,第一连通槽(7i)至第三连通槽(7k)以在振动熔敷时构成能够将格子(7f)内的空气向外部排出的排气路径的方式形成。

Description

车辆用内装板及气囊装置
技术领域
本发明涉及搭载于汽车等交通工具的车辆用内装板及气囊装置,特别是,涉及使用振动熔敷接合的车辆用内装板及气囊装置。
背景技术
以往,安装车辆用气囊装置的车辆用内装板由内壳体和外板通过振动熔敷接合而成,上述内壳体具有构成气囊释放用的开口部并经由铰接部形成于该开口部的铰接板部,上述外板具备覆盖该内壳体的表面并与上述铰接板部接合的门部。而且,在上述铰接板部或上述门部的接合面的一方上形成有与上述铰接部大致平行地配置的多个第一熔敷肋、以与该第一熔敷肋形成多个格子的方式配置的多个第二熔敷肋及沿着上述铰接板部的外缘配置成框状的第三熔敷肋。通过将第一至第三熔敷肋向外板的背侧按压并励振,使外板与内壳体进行熔敷并固定。
但是,在振动熔敷时,由第一及第二熔敷肋形成的格子内的空气失去退避场所,产生空隙,从而阻碍第一及第二熔敷肋与外板的接合,因此存在熔敷强度降低的问题。
作为解决所涉及的问题的机构,例如,已提出专利文献1所记载的带表皮的车辆用内装板。专利文献1所记载的带表皮的车辆用内装板由基材(外板)、粘接于基材表面的表皮、及振动熔敷于基材背面的树脂制结构体(内壳体)构成。在基材上形成有贯通孔,该贯通孔在表皮粘接时将空气从基材与表皮之间向基材背面侧排出,在基材及结构体的一方上形成有从该一方突出并振动熔敷于另一方的格子状的熔敷肋,在该熔敷肋上设置有使贯通孔与外气连通的连通路。根据所涉及的结构,在振动熔敷时,格子内的空气通过连通路向外排出,可抑制树脂制结构体与基材的熔敷强度降低。
专利文献1:日本专利第4371780号
发明内容
但是,正如专利文献1所记载的带表皮的车辆用内装板那样,当在熔敷肋上纵列及横列地设置连通路时,存在车辆用内装板的刚性降低的问题。其结果为,为使气囊膨胀展开时车辆用内装板的一部分不飞散,需要实施过度的振动熔敷,从而导致车辆用内装板的制作所需的时间及成本增加。
本发明是鉴于上述问题而作出的,其目的在于,提供一种能够抑制熔敷强度的降低及板刚性的降低的车辆用内装板及气囊装置。
根据本发明,提供一种车辆用内装板,车辆用内装板由内壳体和外板通过振动熔敷接合而成,上述内壳体具有构成气囊释放用的开口部并经由铰接部形成于该开口部的铰接板部,上述外板具备覆盖该内壳体的表面并与上述铰接板部接合的门部,上述车辆用内装板的特征在于,在上述铰接板部或上述门部的接合面的一方上形成有与上述铰接部大致平行地配置的多个第一熔敷肋、以与该第一熔敷肋形成多个格子的方式配置的多个第二熔敷肋及沿着上述铰接板部的外缘配置成框状的第三熔敷肋,上述第一熔敷肋具有将相邻格子之间连通第一连通槽,上述第二熔敷肋具有将相邻格子之间连通第二连通槽,上述第三熔敷肋具有形成于与上述铰接部大致垂直的边上的第三熔敷肋,上述第二连通槽以在与上述第二熔敷肋正交的方向上不连续地排列的方式形成,上述第一至第三连通槽以在振动熔敷时构成能够将上述格子内的空气向外部排出的排气路径的方式形成。
另外,根据本发明,提供一种气囊装置,该气囊装置具有:气囊,在紧急时刻膨胀展开;充气机,向该气囊供给气体;保持器,保持该充气机及上述气囊;及车辆用内装板,构成为能够卡定该保持器并能够向车内释放上述气囊;上述气囊装置的特征在于,上述车辆用内装板由内壳体和外板通过振动熔敷接合而成,上述内壳体具有构成气囊释放用的开口部并经由铰接部而形成于该开口部的铰接板部,上述外板具备覆盖该内壳体的表面并与上述铰接板部接合的门部,在上述铰接板部或上述门部的接合面的一方上形成有与上述铰接部大致平行地配置的多个第一熔敷肋、以与该第一熔敷肋形成多个格子的方式配置的多个第二熔敷肋及沿着上述铰接板部的外缘配置成框状的第三熔敷肋,上述第一熔敷肋具有将相邻格子之间连通的第一连通槽,上述第二熔敷肋具有将相邻格子之间连通的第二连通槽,上述第三熔敷肋具有形成于与上述铰接部大致垂直的边上的第三熔敷肋,上述第二连通槽以在与上述第二熔敷肋正交的方向上不连续地排列的方式形成,上述第一至第三连通槽以在振动熔敷时构成将上述格子内的空气向外部排出的排气路径的方式形成。
在上述本发明所涉及的车辆用内装板及气囊装置中,上述第二连通槽例如形成于从上述铰接部至少离开与一个格子相当的距离以上的位置。
另外,上述第三连通槽例如形成于从上述第三熔敷肋的角部至少离开与一个格子相当的距离以上的位置。
另外,构成上述排气路径的边界部的第二熔敷肋也可以不具有上述第二连通槽。
也可以是,上述内壳体具有形成于上述开口部的外周的凸缘部,该凸缘部的接合面具有:第四熔敷肋,与上述第一熔敷肋大致平行地配置;第五熔敷肋,与上述第二熔敷肋大致平行地配置;第六熔敷肋,沿着上述凸缘部的外缘配置成框状;及第七熔敷肋,沿着上述凸缘部的内缘配置成框状;在上述第四至第六熔敷肋上分别形成有在振动熔敷时能够将由上述第四至第七熔敷肋包围的格子内的空气向外部排出的第四至第六连通槽。
另外,也可以是,在位于上述凸缘部的上述铰接部的外侧的接合面上,上述第四熔敷肋具有将相邻格子之间连通的第四连通槽,上述第五熔敷肋具有将相邻格子之间连通的第五连通槽,上述第五连通槽以在与上述第五熔敷肋正交的方向上不连续地排列的方式形成。
发明效果
根据上述本发明所涉及的车辆用内装板及气囊装置,在振动熔敷时,能够通过排气路径将格子内的空气向外排出,能够抑制外板与内壳体的熔敷强度的降低。另外,通过在与第二熔敷肋成直角的方向上不连续地配置第二连通槽,能够提高第二熔敷肋的方向上的强度,能够抑制板整体的刚性的降低。另外,无需实施过度的振动熔敷即可容易地制作车辆用内装板及气囊装置。
另外,通过使第二连通槽形成于从铰接部至少离开与一个格子相当的距离以上的位置,能够有效地提高与气囊膨胀展开时承受较大应力的铰接部相邻的部分的强度,能够提高板的刚性。
另外,通过使第三连通槽形成于从第三熔敷肋的角部至少离开与一个格子相当的距离以上的位置,能够有效地提高气囊膨胀展开时容易承受较大外力的门部的角部的强度,能够提高板的刚性。
另外,通过使构成排气路径的边界部的第二熔敷肋不具有第二连通槽,能够容易地形成多个排气路径,能够容易地设计任意的排气路径。而且,通过形成不具有所涉及的第二连通槽的第二熔敷肋,能够局部地提高熔敷强度,也能够提高板的刚性。
另外,即使在形成于内壳体的外周的凸缘部具有第四至第七熔敷肋时,通过在第四至第六熔敷肋上形成规定的连通槽,也能够使由第四至第七熔敷肋形成的格子内的空气容易向外排出,能够抑制凸缘部的熔敷强度的降低。
另外,在位于凸缘部的铰接部的外侧的接合面上,以在与第五熔敷肋正交的方向上不连续地排列的方式形成第五连通槽,由此能够提高第五熔敷肋的方向上的强度,能够抑制板整体的刚性的降低。
附图说明
图1是表示本发明的实施方式所涉及的气囊装置的图,其中,(A)为剖视图,(B)为主视图。
图2是表示图1的内壳体的图,其中,(A)为主视图,(B)为后视图。
图3是图2(A)的Ⅲ部分的放大图。
图4是表示在振动熔敷工序中使内壳体的格子内的空气排出的排气路径的图。
图5是表示图1所示的气囊装置的气囊展开时的动作的图,其中,(A)为气囊膨胀初期阶段,(B)为外板开裂阶段,(C)为门部旋转阶段,(D)为门部旋转结束阶段。
图6是图5(C)的状态下的气囊装置的主视图。
图7是表示本发明所涉及的车辆用内装板的变形例的图,其中,(A)为第一变形例,(B)为第二变形例。
标号说明
1气囊装置
2仪表板
2a开口部
2b凹部
3气囊
4充气机
5保持器
5a钩
6车辆用内装板
7内壳体
7a开口部
7b铰接部
7c铰接板部
7d凸缘部
7e第一熔敷肋
7f格子
7g第二熔敷肋
7h第三熔敷肋
7i第一连通槽
7j第二连通槽
7k第三连通槽
7l第四熔敷肋
7m第五熔敷肋
7n第六熔敷肋
7o第七熔敷肋
7p第四连通槽
7q第五连通槽
7r第六连通槽
8外板
8a门部
8b固定部
8c夹紧件
8d框部
8e切口
71侧壁
71a加强肋
72卡定孔
73接合面
具体实施方式
以下,使用图1至图6对本发明所涉及的气囊装置及车辆用内装板的实施方式进行说明。此处,图1是表示本发明的实施方式所涉及的气囊装置的图,其中(A)为剖视图,(B)为主视图。另外,图2是表示图1的内壳体的图,其中(A)为主视图,(B)为后视图。另外,图3是图2(A)的Ⅲ部分的放大图。另外,图1所示的气囊装置1表示适用于本发明的内装于配置在副驾驶席的前面的仪表板2的车体侧的副驾驶席用气囊装置的实施方式。
如图1所示,本实施方式所涉及的气囊装置1具有:气囊3(参照图5),在紧急时刻膨胀展开;充气机4,向气囊3供给气体;保持器5,保持充气机4及气囊3;及车辆用内装板6,以能够卡定保持器5并能够使气囊3向车内释放的方式构成。另外,在图1(A)中,为便于说明,省略气囊3的图。另外,充气机4也可以不收容于保持器5而外置于保持器5并进行保持。
上述车辆用内装板6由内壳体7和外板8通过振动熔敷接合而成,上述内壳体7具有构成气囊释放用的开口部7a并经由铰接部7b形成于开口部7a的铰接板部7c和形成于开口部7a的外周的凸缘部7d,上述外板8具备覆盖内壳体7的表面并与铰接板部7c接合的门部8a,在铰接板部7c的接合面上形成有与铰接部7b大致平行地配置的多个第一熔敷肋7e、以与第一熔敷肋7e形成多个格子7f的方式配置的多个第二熔敷肋7g及沿着铰接板部7c的外缘配置成框状的第三熔敷肋7h,第一熔敷肋7e具有将相邻格子7f、7f之间连通的第一连通槽7i,第二熔敷肋7g具有将相邻格子7f、7f之间连通的第二连通槽7j,第三熔敷肋7h具有形成于与铰接部7b大致垂直的边上的第三熔敷肋7k,第二连通槽7j以在与第二熔敷肋7g正交的方向上不连续地排列的方式形成,第一连通槽7i至第三连通槽7k以在振动熔敷时构成能够将格子7f内的空气向外部排出的排气路径的方式形成。另外,在图3所示的局部放大图中,为了便于理解熔敷肋及连通槽的布局,用虚线表示各熔敷肋所形成的方向。
上述仪表板2一般以车辆前后方向的前方侧较高而后方侧较低的方式倾斜,在该前方侧与该后方侧之间,形成有大致矩形的气囊释放用的开口部2a。另外,在开口部2a的外周上形成有用于安装外板8的凹部2b,在凹部2b形成有用于***设置于外板8的多个夹紧件8c的止动孔。在图1(A)中,凹部2b朝向与仪表板2的倾斜面大致垂直方向形成,但不限定于所涉及的结构,也可以将凹部2b形成于大致铅垂方向。而且,通过将外板8嵌入凹部2b来覆盖仪表板2的开口部2a。因此,外板8的表面构成车辆内装面,从而形成车辆用内装板6的一部分(表面侧部分)。另外,此处,对仪表板2和外板8是不同部件的情况进行了说明,但外板8也可以与仪表板2一体地形成。
上述内壳体7振动熔敷于外板8的背面,从而形成车辆用内装板6的一部分(背面侧部分)。所涉及的内壳体7卡定保持器5,并且,具有在气囊3膨胀展开时保持开裂的外板8的门部8a的功能。如图1(A)所示,内壳体7具备配置成形成气囊释放用的开口部7a的矩形的侧壁71。侧壁71具有多个卡定孔72,,与连接于保持器5的钩5a卡定。另外,如图2(B)所示,也可以在侧壁71的外周上形成有多个加强肋71a。
另外,如图1及图2所示,内壳体7具有熔敷于外板8的固定部8b的凸缘部7d、熔敷于门部8a的一对铰接板部7c及分别形成于凸缘部7d与两个铰接板部7c之间的一对铰接部7b。铰接部7b例如以朝向车体侧突出的方式形成大致U字形。该铰接部7b具有在气囊3膨胀时使外板8的门部8a不飞散而左右对开的功能。
如图2及图3所示,在铰接板部7c的接合面上形成有第一熔敷肋7e,第二熔敷肋7g及第三熔敷肋7h,通过第一熔敷肋7e至第三熔敷肋7h而形成有多个大致格子状的空间(格子7f)。在本发明中,所涉及的格子7f以在振动熔敷时不形成封闭空间的方式形成多个连通槽,从而形成空气的排出通道(排气路径)。另外,第一熔敷肋7e及第二熔敷肋7g的条数或形状(高度、宽度等)不限定于图示的内容,能够根据气囊3的种类、大小、内压及车辆用内装板6的接合面所承受的应力等条件来适当地设定。
第一熔敷肋7e与铰接部7b大致平行地配置,并具有保持与铰接板部7c的旋转方向(图的上下方向)大致垂直的方向(图的左右方向)上的熔敷强度的功能。为了使在气囊3膨胀展开时产生于所涉及的第一熔敷肋7e所形成的方向(图的左右方向)的负荷比产生于铰接板部7c的旋转方向(图的上下方向)的负荷小,即使以纵向贯通多个第一熔敷肋7e的方式形成第一连通槽7i,对车辆用内装板6的刚性的影响也较小。因此,第一连通槽7i以将相邻格子7f、7f之间连通的方式形成。但是,所涉及的第一连通槽7i以不纵向贯通第三熔敷肋7h的方式形成。由于第三熔敷肋7h是保持铰接板部7c的外缘的刚性的部分,因此并不优选使第一连通槽7i纵向贯通所涉及的第三熔敷肋7h。
第二熔敷肋7g与铰接部7b大致垂直地配置,并具有保持铰接板部7c的旋转方向(图的上下方向)上的熔敷强度的功能。由于在气囊3膨胀展开时产生于所涉及的第二熔敷肋7g所形成的方向(图的上下方向)的负荷较大,因此,当以纵向贯通多个第二熔敷肋7g的方式形成第二连通槽7j时,导致车辆用内装板6的刚性过度地降低。因此,第二连通槽7j以在与第二熔敷肋7g正交的方向(图的左右方向)上不连续地排列的方式形成。具体而言,第二连通槽7j例如以每隔一个、每隔两个、每隔三个的方式形成。另外,其结果为,即使在第二熔敷肋7g所形成的方向(图的上下方向)上,第二连通槽7j也能够至少离开与一个格子7f相当的距离地形成。
另外,第二连通槽7j形成于从铰接部7b至少离开与一个格子相当的距离以上的位置。因此,能够提高在气囊3膨胀展开时与承受较大应力的铰接板部7c的铰接部7b相邻的部分的强度。另外,通过在铰接板部7c的前端侧形成第二连通槽7j,前端侧的强度低于铰接部7b侧,因此能够容易地产生挠曲,也能够对铰接板部7c施加适于气囊3的膨胀展开的弹力性。
另外,构成排气路径的边界部的铰接板部7c的大致中央的第二熔敷肋7g不具有第二连通槽7j。这样一来,通过配置不具有第二连通槽7j的第二熔敷肋7g,能够容易地形成多个排气路径,能够朝向任意方向将格子7f内的空气向外部排出。
第三熔敷肋7h沿着铰接板部7c的外缘配置成框状,因此,若在所涉及的第三熔敷肋7h的某一处未形成连通槽,则即使形成了第一连通槽7i及第二连通槽7j,也无法在振动熔敷时将格子7f内的空气向外部排出。因此,在本实施方式中,将第三连通槽7k形成于构成与第三熔敷肋7h的铰接部7b大致垂直的边的部分的大致中央部。构成与第三熔敷肋7h的铰接部7b大致并行的边的部分是与铰接部7b相邻的边和构成铰接板部7c的前端部的边,是在气囊3膨胀展开时容易承受应力或外力的部分。因此,并不优选在构成与铰接部7b大致并行的边的部分形成第三连通槽7k,因而,将第三连通槽7k形成于构成与铰接部7b大致垂直的边的部分。
另外,铰接板部7c的角部也是在气囊3膨胀展开时容易承受应力或外力的部分。因此,并不优选第三连通槽7k形成于从第三熔敷肋7h的角部至少离开与一个格子相当的距离以上的位置。其结果为,在本实施方式中,第三连通槽7k形成于构成与第三熔敷肋7h的铰接部7b大致垂直的边的部分的大致中央部。
另外,内壳体7具有形成于开口部7a的外周的凸缘部7d,凸缘部7d的接合面具有:第四熔敷肋7l,与第一熔敷肋7e大致平行地配置;第五熔敷肋7m,与第二熔敷肋7g大致平行地配置;第六熔敷肋7n,沿着凸缘部7d的边缘配置成框状;及第七熔敷肋7o,沿着凸缘部7d的内缘配置成框状;在第四熔敷肋7l至第六熔敷肋7n上分别形成有在振动熔敷时能够将由第四熔敷肋7l至第七熔敷肋7o包围的格子内的空气向外部排出的第四连通槽7p至第六连通槽7r。
如图1(B)及图2(A)所示,凸缘部7d以包围开口部7a的外周的方式形成,并经由铰接部7b与铰接板部7c连接。而且,图2(A)中,在位于凸缘部7d的剖面线部分、即凸缘部7d的铰接部7b的外侧的接合面73上,第四熔敷肋7l具有将相邻格子7f、7f之间连通的第四连通槽7p,第五熔敷肋7m具有将相邻格子7f、7f之间连通的第五连通槽7q,第五连通槽7q以在与第五熔敷肋7m正交的方向上不连续地排列的方式形成。所涉及的接合面73是位于铰接板部7c的延长线上的部分,由于在气囊3膨胀展开时所承受的应力较大,因此根据与形成于铰接板部7c的第一连通槽7i~第三连通槽7k相同的思考方法来形成连通槽。
另一方面,除凸缘部7d的接合面73以外的接合面在气囊3膨胀展开时所承受的应力与接合面73相比较小,因此只要以在振动熔敷时不封入格子7f内的空气的方式形成排气路径即可。因此,如图2(A)所示,在本实施方式中,在除凸缘部7d的接合面73以外的接合面上,可以不形成第四连通槽7p而仅形成第五连通槽7q,也可以连续地形成第五连通槽7q。当然,即使在除凸缘部7d的接合面73以外的接合面上,也可以根据与接合面73相同的思考方法来形成第四连通槽7p至第六连通槽7r。另外,第七熔敷肋7o是包围开口部7a的部分,需要提高刚性,因此优选在所涉及的第七熔敷肋7o上不形成连通槽,优选的结构为格子7f内的空气从适当地形成于第六熔敷肋7n的第六连通槽7r向外侧排出。
上述外板8以覆盖开口部2a的方式安装于凹部2b,并通过夹紧件8c固定于仪表板2。因此,形成外板8的外周部的框部8d形成为适合于仪表板2的凹部2b的形状。具体而言,在图1(A)所示的实施方式中,框部8d形成于在与仪表板2的倾斜面大致垂直的方向。另外,在外板8的车体侧表面上形成有在气囊展开时用于使外板8容易开裂的多个切口8e。通过该切口8e,外板8被划分为固定部8b与一对门部8a。所涉及的切口8e构成所谓的撕裂线。
上述内壳体7及外板8例如通过以下的工序进行振动熔敷。(1)将外板8的内表面(车体侧的表面)以处于上方的方式载置于振动熔敷机的底座上。(2)将内壳体7的接合面侧以处于下方的方式载置于外板8上。(3)利用振动熔敷机将内壳体7的接合面从上侧向底座进行加压,并对内壳体加压。(4)维持加压状态,并通过振动熔敷机使内壳体7在规定的振动方向上进行往复振动。而且,当以规定的频率使内壳体进行与规定时间相当的往复振动时,树脂因摩擦热而熔化,从而内壳体7的接合面熔敷于外板8。另外,振动熔敷条件(频率数、时间、振动振幅等)根据要熔敷的树脂或产品的种类等而各不相同,能够任意地进行设定。另外,也可以使用超声波熔敷机来代替振动熔敷机。
此处,图4是表示在振动熔敷工序中将内壳体的格子内的空气排出的排气路径的图。在上述本发明所涉及的实施方式中,通过在各熔敷肋上形成上述连通槽,能够沿着图4箭头所示的排气路径形成空气的排出通道,能够在振动熔敷时将各格子7f内的空气向外部排出。因此,不会产生格子7f内的空气失去退避场所而使空气进入到内壳体7和外板8的接合面的情况,能够抑制熔敷强度的降低或偏差。另外,无需实施过度的振动熔敷即能够以比以往更少的劳动力来制作车辆用内装板6,也能够降低车辆用内装板的制作所需的时间及成本。
接着,参照图5及图6对图1所示的气囊装置1的气囊3膨胀展开时的动作进行说明。此处,图5是表示图1所示的气囊装置的气囊展开时的动作的图,其中,(A)为气囊膨胀初期阶段,(B)为外板开裂阶段,(C)为门部旋转阶段,(D)为门部旋转结束阶段。图6是图5(C)的状态下的气囊装置的主视图。
图5(A)所示的气囊膨胀初期阶段是气囊3在内壳体7的内部膨胀而按压车辆用内装板6的接合面的阶段。气囊装置1在从检知或检测出车辆的碰撞等的ECU(电子控制单元)接收到规定的信号时将气体从充气机4向气囊3供给气体。气囊3沿着图中的箭头方向进行膨胀,与内部板7的铰接板部7c接触并进行按压。
图5(B)所示的外板开裂阶段是气囊3按压车辆用内装板6的接合面而使外板8开裂成固定部8b与两个门部8a的阶段。此时,以门部8a与门部8a之间的切口8e比固定部8b与门部8a之间的切口8e更容易先开裂的方式来设定切口8e的深度或外板8的厚度。另外,外板8的门部8a以如下的方式构成,该门部8a最终从固定部8b分离但却经由铰接部7b与内壳体7的铰接板部7c连接,从而不会飞散。
图5(C)所示的门部旋转阶段是门部8a随着气囊3的膨胀的进行而以铰接部7b为中心朝固定部8b侧旋转的阶段。此时,铰接部7b由气囊3的膨胀上推而向上方伸展。另外,在铰接板部7c形成有上述第一熔敷肋7e~第三熔敷肋7h,在各熔敷肋上形成有上述第一连通槽7i~第三连通槽7k,因此,如图6所示,铰接板部7c的前端侧以如下方式构成,通过气囊3的按压力适当地产生挠曲并进行开裂,从而能够抑制铰接板部7c的破损。另一方面,铰接板部7c的铰接部7b侧的强度高于前端侧的强度,铰接部7b侧难以产生挠曲,因此能够降低铰接部7b所承受的应力,从而能够抑制铰接部7b的破损。这样一来,在本发明的实施方式所涉及的车辆用内装板6中,能够容易地获得气囊3膨胀展开所需的充分的接合面的熔敷强度及刚性。
图5(D)所示的门部旋转结束阶段是门部8a在固定部8b侧进行弯折的阶段。在所涉及的阶段中,根据门部8a的旋转趋势,即使在门部8a与固定部8b接触时,由于门部8a与铰接板部7c的接合面均匀且牢固地进行振动熔敷且具有一定的刚性,因此也能够抑制因接触的冲击而使接合面脱落或一部分缺失的情况。
接着,使用图7对在上述本发明的实施方式中所使用的车辆用内装板6的变形例进行说明。此处,图7是表示本发明所涉及的车辆用内装板的变形例的图,其中,(A)为第一变形例,(B)为第二变形例。另外,对与上述实施方式相同的部分标以相同的标号,并省略重复的说明。
图7(A)是表示外板8的背面(接合面)的图。即,车辆用内装板6的第一变形例是在外板8的接合面(背面)上形成有第一熔敷肋7e~第七熔敷肋7o及第一连通槽7i~第六连通槽7r的变形例。即使在所涉及的第一变形例中,也能起到与上述实施方式相同的效果。另外,虽然未图示,但是也可以在内壳体7的铰接板部7c形成第一熔敷肋7e~第三熔敷肋7h及第一连通槽7i~第三连通槽7k、并在外板8的接合面上形成第四熔敷肋7l~第七熔敷肋7o及第六连通槽7r,也可以是与其相反的模式。
图7(B)是表示内壳体7的接合面的图。即,车辆用内装板6的第二变形例是将本发明应用于外板8的门部8a为单开的时的变形例。因此,内壳体7的铰接板部7c仅为一块,铰接部7b也仅形成于一处。即使在所涉及的结构中,也能够与上述实施方式同样地在铰接板部7c形成第一熔敷肋7e~第七熔敷肋7o及第一连通槽7i~第六连通槽7r。另外,如图7(B)所示,当铰接板部7c的接合面的面积较大时,也可以在一条第二熔敷肋7g上形成多个第二连通槽7j,也可以形成多个第三连通槽7k。但是,第二连通槽7j不仅以在第一熔敷肋7e所形成的方向上不连续的方式形成,而且优选以在第二熔敷肋7g所形成的方向上以至少与一个格子7f相当的距离以上的间隔进行配置且不连续的方式形成。
本发明不限定于上述实施方式,当然,可以适用于除副驾驶席用气囊装置以外的气囊装置,也可以对第一变形例与第二变形例进行适当地组合等,能够在不脱离本发明的主旨的范围内进行各种变更。

Claims (7)

1.一种车辆用内装板,由内壳体和外板通过振动熔敷接合而成,所述内壳体具有构成气囊释放用的开口部并经由铰接部形成于所述开口部的铰接板部,所述外板具备覆盖所述内壳体的表面并与所述铰接板部接合的门部,
所述车辆用内装板的特征在于,
在所述铰接板部或所述门部的接合面的一方上形成有与所述铰接部大致平行地配置的多个第一熔敷肋、以与所述第一熔敷肋形成多个格子的方式配置的多个第二熔敷肋及沿着所述铰接板部的外缘配置成框状的第三熔敷肋,
所述第一熔敷肋具有将相邻格子之间连通的第一连通槽,
所述第二熔敷肋具有将相邻格子之间连通的第二连通槽,
所述第三熔敷肋具有形成于与所述铰接部大致垂直的边上的第三连通槽,
所述第二连通槽以在与所述第二熔敷肋正交的方向上不连续地排列的方式形成,
所述第一至第三连通槽以在振动熔敷时构成能够将所述格子内的空气向外部排出的排气路径的方式形成。
2.根据权利要求1所述的车辆用内装板,其特征在于,
所述第二连通槽形成于从所述铰接部至少离开与一个格子相当的距离以上的位置。
3.根据权利要求1所述的车辆用内装板,其特征在于,
所述第三连通槽形成于从所述第三熔敷肋的角部至少离开与一个格子相当的距离以上的位置。
4.根据权利要求1所述的车辆用内装板,其特征在于,
构成所述排气路径的边界部的第二熔敷肋不具有所述第二连通槽。
5.根据权利要求1所述的车辆用内装板,其特征在于,
所述内壳体具有形成于所述开口部的外周的凸缘部,所述凸缘部的接合面具有:第四熔敷肋,与所述第一熔敷肋大致平行地配置;第五熔敷肋,与所述第二熔敷肋大致平行地配置;第六熔敷肋,沿着所述凸缘部的外缘配置成框状;及第七熔敷肋,沿着所述凸缘部的内缘配置成框状;在所述第四至第六熔敷肋上分别形成有在振动熔敷时能够将由所述第四至第七熔敷肋包围的格子内的空气向外部排出的第四至第六连通槽。
6.根据权利要求5所述的车辆用内装板,其特征在于,
在位于所述凸缘部的所述铰接部的外侧的接合面上,所述第四熔敷肋具有将相邻格子之间连通的第四连通槽,所述第五熔敷肋具有将相邻格子之间连通的第五连通槽,所述第五连通槽以在与所述第五熔敷肋正交的方向上不连续地排列的方式形成。
7.一种气囊装置,具有:气囊,在紧急时刻膨胀展开;充气机,向所述气囊供给气体;保持器,保持所述充气机及所述气囊;及车辆用内装板,构成为能够卡定所述保持器并能够向车内释放所述气囊;
所述气囊装置的特征在于,所述车辆用内装板是权利要求1至6中任一项所记载的车辆用内装板。
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