CN102642463A - 燃料箱用连接器以及止回阀 - Google Patents
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Abstract
一种燃料箱用连接器以及止回阀。用于连接燃料箱与管体的连接器中的加强筒体以极为简单的结构、适当地安装在管体的安装部内侧。具有:筒状本体(1);连接器筒体(2),其具有连接燃料箱(T)和外部的管体(P)的安装部(20)并组合在该筒状本体(1)上;加强筒体(3),其容纳在该连接器筒体(2)内。由形成在连接器筒体(2)内侧的制动器部(24)和通过上述组合而位于该连接器筒体(2)内的筒状本体(1)的作为筒端的保持端部(16),从其两侧夹住加强筒体(3),使该加强筒体(3)位于连接器筒体(2)的安装部(20)内侧。
Description
本发明是申请号为200910226055.3、发明名称为“燃料箱用连接器以及止回阀”、申请日为2009年11月25日的发明申请的分案申请。
技术领域
本发明涉及连接燃料箱和使该燃料箱与外部连接的管体所用的连接器、以及使用其构成的止回阀的改良。
背景技术
作为连接燃料箱与外部配管的阀,如专利文献1所示。该阀由固定用机座、法兰盘和阀外壳组合而成。上述阀中,阀外壳上设置有与法兰盘上端部卡合的弹性卡止片和与该法兰盘下端部卡合的环状棱,由此,法兰盘被组装到上述阀外壳内侧,将这样组装有法兰盘的阀外壳嵌入固定用机座中的外部配管的连接管部内侧,由此将上述法兰盘放入该连接管部内侧,构成该连接管部的加强。
然而,上述阀中,上述阀外壳上必须设置与法兰盘卡合的弹性卡止片和与固定用机座的连接管部卡合的弹性卡止片,并且该连接管部与法兰盘之间不得不存在阀外壳,所以,从尽量宽地确保该连接管部内侧的燃料流路的观点看来,是不适合的。
[专利文献1]特开2005-127501号公报(0043段,图8)
发明内容
本发明的主要目的在于,用于连接燃料箱与管体的连接器(专利文献1的阀)及使用其构成的止回阀中,加强筒体(专利文献1的法兰盘)以极为简单的结构、适当地安装在管体的安装部内侧,并且在该安装部内侧,能够尽可能宽地确保燃料流路。
为了达成上述课题,本发明的燃料箱用连接器具有:筒状本体;连接器筒体,其具有连接燃料箱和外部的管体的安装部并组合在该筒状本体上;加强筒体,其容纳在该连接器筒体内;
由形成在连接器筒体内侧的制动器部和通过上述组合而位于该连接器筒体内的筒状本体的作为筒端的保持端部,从其两侧夹住加强筒体,使该加强筒体位于连接器筒体的安装部内侧。
通过上述结构,将该加强筒体放入连接器筒体的安装部内侧,直到加强筒体的筒一端碰到上述制动器部的位置为止,将筒状本体组合到该连接器筒体上,由此能够将加强筒体内置于上述安装部内侧。并且,由这样内置的加强筒体,能够使连接器筒体的安装部具有能承受与燃料供给管等的连接甚至软管夹箍等的紧固的刚性。
上述筒状本体上具有阀体,其将该筒状本体的流路可开放地闭锁,或者能够将该流路闭锁。
为了达成上述课题,本发明的燃料箱用止回阀具有:筒状本体,其具有阀体;连接器筒体,其具有燃料供给管的安装部并组合在该筒状本体上;加强筒体,其容纳在该连接器筒体内;
由形成在连接器筒体内侧的制动器部和通过上述组合而位于该连接器筒体内的筒状本体的作为筒端的保持端部,从其两侧夹住加强筒体,使该加强筒体位于连接器筒体的安装部内侧。
通过上述结构,将该加强筒体放入连接器筒体的安装部内侧,直到加强筒体的筒一端碰到上述制动器部的位置为止,将筒状本体组合到该连接器筒体上,由此能够将加强筒体内置于上述安装部内侧。并且,由这样内置的加强筒体,能够使连接器筒体的安装部具有能承受与燃料供给管等的连接甚至软管夹箍等的紧固的刚性。
如果上述筒状本体的保持端部侧内径和加强筒体内径大致相同,放置加强筒体的上述结构不会妨碍从燃料供给管送入的燃料流动。
另外,上述筒状本体的保持端部上形成向该筒状本体中心突出的突部时,上述突部能够由保持端部支持加强筒体。
本发明所涉及的连接器及止回阀中,加强筒体由连接器筒体内侧形成的制动器部和位于该连接器筒体内的筒状本体的保持端部从两侧夹住,位于安装部内侧,所以加强筒体能够以简单的结构适当地放置在管体的安装部内侧,并且在该安装部内侧,能够尽可能宽地确保燃料流路。
附图说明
图1是连接器C的分解立体图。
图2是同一连接器的侧视图。
图3是同一连接器的仰视图。
图4是同一连接器的剖视图。
图5是表示同一连接器的使用状态的剖视图(与图4不同位置的剖视图)。
图6是表示连接器C的变形例的要部剖视结构图。
符号说明
T燃料箱
P管体
1筒状本体
16保持端部
2连接器筒体
20安装部
24制动器部
3加强筒体
具体实施方式
下面根据图1~图6来说明本发明的具体实施方式。这里,图1表示涉及实施方式的作为止回阀Ca构成的连接器C的各部分的分离状态,图2~图4分别表示上述连接器C,图5以假想线表示安装的燃料箱T的剖面状态轮廓,以剖面表示上述连接器C的使用状态。(同图中,放入燃料箱T的轮廓内的连接器筒体2的环状隆起部22a成为相对该燃料箱T外面部的熔融原料。)图6是改变图1~图5所示的连接器C的一部分后的例子,只表示其变形部分。
本实施方式所涉及的连接器C用于连接燃料箱T和使该燃烧箱T与外部连接的管体P。作为这样的管体P有连接燃料加油口的燃料供给管、构成与燃油泵连接的燃料供给管线的管、连接罐的蒸汽管、通气管等。
本实施方式所涉及的燃料箱用止回阀Ca安装在燃料箱T上,用于连接该燃料箱T和燃料供给管。即,上述止回阀Ca是上述连接器C上具有阀体10而构成的。
上述连接器C具有筒状本体1、连接器筒体2和加强筒体3。加强筒体3为了加强连接器筒体2的后述安装部20,内置于该安装部20内。通过使构成加强筒体3的材料由刚性高于构成连接器筒体2的材料来构成,能够提高其加强效果。图示例中,连接器筒体2因相对燃料箱T的熔融来固定的关系等原因,由合成树脂构成,加强筒体3由刚性比该合成树脂高的材料、图示例中由SPCC等金属构成。由此,能够尽量抑制连接器C的重量增加,而且能够实现加强筒体3厚度的最小化。图示例中,上述连接器C在筒状本体1上还有阀体10,由此构成上述止回阀Ca。即,图示例中,上述阀体10使筒状本体1的流路L可开放地闭锁。
使上述连接器C具有阀体10,构成断流阀等通气类的阀时,也可能是下述情况:筒状本体1的流路L通常开放,具备规定条件时由上述阀体10使该筒状本体1的流路L闭锁。这时,未图示,由燃料液位的变化而移动到闭阀位置的浮子针阀等作为阀体使用。
筒状本体1与连接器筒体2组合后构成连通燃料箱T内外的流路L。即,筒状本体1的筒两端都开放。图示例中,上述筒状本体1构成为大致圆筒状体。筒状本体1的筒一端11侧为相对连接器筒体2的组合部11a,图示例中,筒状本体1的该组合部11a从连接器筒体2中与后述安装部20相反侧的筒端插入该连接器筒体2内,由此连通筒状本体1的内部和连接器筒体2的内部,形成燃料的流路L。即,图示例中,筒状本体1的组合部11a的外径与连接器筒体2的内径大致相同。
并且,图示例中,在筒状本体1外侧、上述组合部11a侧上,与该组合部11a的筒端之间隔开间隔,形成环绕该筒状本体1的周回壁部13。该周回壁部13的内面和筒状本体1的外面之间,无论在该周回方向的任意位置上都形成与连接器筒体2厚度大致相同的间隔。该周回壁部13在筒状本体1的筒另一端12侧的端部13a上,与筒状本体1的外面连接为一体。该周回壁部13上,其周回方向上与相邻窗孔13b之间隔开间隔,形成多个窗孔13b。并且,图示例中,在筒状本体1的组合部11a完全插入连接器筒体2内的位置上,连接器筒体2的外面形成的后述卡合突部23a插入上述窗孔13b,并卡合,能够维持与连接器筒体2的组合状态。
图示例中,该筒状本体1上具有阀体10,使上述筒状本体1的筒另一端12通常闭锁。图示例中,上述阀体10由盖板10a构成,其大小为从外侧覆盖该筒状本体1的筒另一端12。该盖板10a可转动地安装在筒状本体1的筒另一端12上,并且由扭力盘簧15施压,使其一面压向上述筒另一端12。图中,符号10b表示筒状本体1所具有的盖板10a的转动轴,符号10c表示盖板10a的另一面上形成的该转动轴10b的轴承部。扭力盘簧15中,弹簧卷曲部15a穿过上述转动轴10b,弹簧一端15b与筒状本体1侧压接,弹簧另一端15c与盖板10a另一面压接。上述筒状本体1如后述,设置在燃料箱T内侧,由上述阀体10,通过燃料供给管向燃料箱T内流动的燃料流动对抗上述弹簧15的压力,使盖板10a向离开筒状本体1的筒另一端12的方向转动,这并没有妨碍,但防止燃料向燃料供给管的逆流。
连接器筒体2具有连接燃料箱T和外部的管体P的安装部20,与该筒状本体1组合。该连接器筒体2也是筒两端都开放。图示例中,上述连接器筒体2也构成为大致圆筒状体。在该连接器筒体2的外侧、筒两端间,形成环绕该连接器筒体2筒轴的外颚部22。图示例中,夹着该外颚部22的一侧为上述安装部20,另一侧为筒状本体1的组合部11a的被组合部23(接收部)。上述外颚部22中朝向被组合部23侧的一侧上,形成环状隆起部22a,使该外颚部22的突出端加边。图示例中,对于树脂制的燃料箱T上开孔的、连接器筒体2的被组合部23通过但外颚部22不能通过的大小的安装孔Ta,在连接器筒体2的被组合部23及组合后的筒状本体1从燃料箱T外侧插入燃料箱T内的状态下,将上述环状隆起部22a在燃料箱T外面部热熔融,从而使止回阀Ca安装在上述燃料箱T上。
图示例中,上述连接器筒体2的被组合部23外侧形成卡合突起23a,其与筒状本体1的周回壁部13上形成的窗孔13b卡合。并且,图示例中,随着筒状本体1的组合部11a进入连接器筒体2的被组合部23内侧,主要使周回壁部13侧弹性变形,同时连接器筒体2的被组合部23进入该周回壁部13与筒状本体1外面之间,与上述各窗孔13b对应的卡合突部23a卡合。
图示例中,止回阀Ca的连接器筒体2的安装部20在作为管体P的燃料供给管内,从其一端进入,直到这一端碰到上述外颚部22的位置为止,由此,通过止回阀Ca,燃料箱T与燃料供给管连接。(图5)即,图示例中,上述连接器筒体2中位于燃料箱T外侧的外颚部22向前延伸的部分作为上述安装部20发挥作用。燃料供给管中的内侧插入连接器筒体2的安装部20的燃料供给管外侧上具有软管夹箍B,由该软管夹箍B,燃料供给管与安装部20被紧固。
加强筒体3容纳在上述连接器筒体2内,加强该连接器筒体2的安装部20。图示例中,上述加强筒体3的外径与连接器筒体2的安装部20的内径大致相同,并且为筒两端都开放的圆筒体。上述筒状本体1的组合部11a侧的内径与上述加强筒体3的内径大致相同。
本实施方式中,由上述连接器筒体2内侧形成的制动器部24和由上述组合而位于该连接器筒体2内的筒状本体1的保持端部16,从两侧夹住加强筒体3,使该加强筒体3位于连接器筒体2的安装部20内侧。
图示例中,连接器筒体2的安装部20内侧,与该安装部20侧的筒端之间隔开一些间隔,形成环绕该连接器筒体2筒轴的周回突部24a。该周回突部24a从连接器筒体2内面突出的尺寸与加强筒体3的厚度尺寸大致相同。并且,该周回突部24a与组合部11a完全插入连接器筒体2的被组合部23内的状态下的该组合部11a侧的筒状本体1的筒端(上述筒一端11)之间的间隔,与加强筒体3的筒轴方向全长大致相同。
由此,该实施方式中,将该加强筒体3从该连接器筒体2的与安装部20相反侧的筒端21侧插入连接器筒体2的安装部20内侧,直至加强筒体3的筒一端碰到上述周回突部24a的位置为止,使筒状本体1与该连接器筒体2组合,由此能够使加强筒体3内置于上述安装部20内侧。并且,由这样内置的加强筒体3,使连接器筒体2的安装部20具有能够承受与燃料供给管的连接甚至由软管夹箍的上述紧固的刚性。
即,本实施方式中,连接器筒体2的安装部20的上述周回突部24a作为上述制动器部24、筒状本体1的组合部11a侧的筒状本体1的筒端(上述筒一端11)作为上述保持端部16发挥作用。
图示例中,如上述,筒状本体1的保持端部16侧的内径与加强筒体3的内径大致相同,所以放置加强筒体3的上述结构不会妨碍从燃料供给管送入的燃料的流动。
图示例中,上述筒状本体1的保持端部16上形成向该筒状本体1中心突出的突部17。
具体来说,图示例中,将条一端位于上述筒状本体1的保持端部16上、向该筒状本体1的筒另一端12侧延续的棱状突部17,在环绕该筒状本体1筒轴的方向上,相邻突部之间隔开间隔,设置四处。
由此,图示例中,能够由上述突部通过保持端部16确实地支持加强筒体3。
如图6所示,将连接器筒体2的被组合部23插入筒状本体1的组合部11a内侧、使筒状本体1与连接器筒体2组合时,与该组合部11a内面之间隔开插入连接器筒体2的被组合部23的间隔,在该组合部11a内侧形成保持用壁部18,该保持用壁部18的端部作为上述保持端部16。这时,保持用壁部18可以在环绕筒状本体1筒轴的方向上分离设置为几个。
Claims (5)
1.一种燃料箱用连接器,其特征在于,具有:筒状本体;连接器筒体,其具有连接燃料箱和外部的管体的安装部并组合在该筒状本体上;加强筒体,其容纳在该连接器筒体内;
由形成在连接器筒体内侧的制动器部和通过上述组合而位于该连接器筒体内的筒状本体的作为筒端的保持端部,从其两侧夹住加强筒体,使该加强筒体位于连接器筒体的安装部内侧。
2.根据权利要求1所述的燃料箱用连接器,其特征在于,筒状本体上具有阀体,该阀体将该筒状本体的流路可开放地闭锁,或者能够将该流路闭锁。
3.一种燃料箱用止回阀,其特征在于,具有:筒状本体,其具有阀体;连接器筒体,其具有燃料供给管的安装部并组合在该筒状本体上;加强筒体,其容纳在该连接器筒体内;
由形成在连接器筒体内侧的制动器部和通过上述组合而位于该连接器筒体内的筒状本体的作为筒端的保持端部,从其两侧夹住加强筒体,使该加强筒体位于连接器筒体的安装部内侧。
4.根据权利要求3所述的燃料箱用止回阀,其特征在于,筒状本体的保持端部侧内径和加强筒体内径大致相同。
5.根据权利要求3或4所述的燃料箱用止回阀,其特征在于,在筒状本体的保持端部上形成向该筒状本体的中心突出的突部。
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