JP4050591B2

JP4050591B2 - Elastic molded products such as rubber and elastomer with thread

Info

Publication number: JP4050591B2
Application number: JP2002317303A
Authority: JP
Inventors: 清晴水島; 秀夫上小澤
Original assignee: Inoac Corp
Current assignee: Inoac Corp
Priority date: 2002-10-31
Filing date: 2002-10-31
Publication date: 2008-02-20
Anticipated expiration: 2022-10-31
Also published as: JP2004150556A

Description

【０００１】
【発明の属する技術分野】
この発明は、例えば車両のボンネットフードの閉鎖位置を規制するために、車両の車体等に螺合して取り付けられるクッションストッパ等のネジ部付きゴム・エラストマー等の弾性体成形品に関するものである。なお、この明細書においては、ネジ部付きゴム・エラストマー等の弾性体成形品をクッションストッパに具体化したものとして説明するが、クッションストッパに限らず、スペーサあるいは他の用途の各種のものに具体化される。
【０００２】
【従来の技術】
従来、この種のネジ部付きゴム・エラストマー等の弾性体成形品としては、例えば図２７に示すような構成のクッションストッパが知られている。すなわち、このクッションストッパ６１は全体がゴム等のエラストマーにより一体に成形され、その一端にはネジ部６２が形成されている。フード等の被取付部材６３には、ほぼ螺旋状をなす取付孔６４が形成されている。そして、この被取付部材６３の取付孔６４にネジ部６２を螺合することにより、クッションストッパ６１が被取付部材６３上に取り付けられ、その頭部６５においてボンネットフード等を受け止めるようになっている。
【０００３】
【発明が解決しようとする課題】
ところで、この種のクッションストッパ６１は、各種の車両に共通部品として取り付けられることが多い。この場合、被取付部材６３の取付孔６４に対するネジ部６２の螺合量を加減することにより、被取付部材６３上におけるクッションストッパ６１の取付高さを調節設定する必要がある。しかしながら、従来構成においては、単にクッションストッパ６１にネジ部６２が形成されているに過ぎないため、取付孔６４に対するネジ部６２の螺合量を所定量に設定するのが困難で、熟練を要するものであった。
【０００４】
そのため、ネジ部６２上の任意の位置において、そのネジ溝を埋めるように構成することも考えられる。ところが、このように構成した場合には、各種の車両や取付箇所ごとに、規制突起の突設位置が異なったクッションストッパ６１を用意しなければならず、クッションストッパ６１を共用することができなくなった。このため、多種類の金型を用意する必要があって、コストアップの要因となる。
【０００５】
この発明は、このような従来の技術に存在する問題点に着目してなされたものである。その目的は、被取付部材の取付孔に対するネジ部の螺合量を任意に設定変更して取り付けることができて、被取付部材に対する取付高さの異なった場合にも共用することができるネジ部付きゴム・エラストマー等の弾性体成形品を提供することにある。
【０００６】
【課題を解決するための手段】
上記の目的を達成するために、請求項１に記載の発明は、被取付部材の取付孔に螺合するためのネジ部を形成したゴム・エラストマー等の弾性体成形品において、前記ネジ部には型抜き可能な形状をなす回動規制手段をパーティングライン間の中央部に位置するように設け、その回動規制手段による回動規制位置をネジ部の軸線方向において変更可能に設けたことを特徴とするものである。
【０００７】
従って、この請求項１に記載の発明によれば、回動規制手段の規制位置をネジ部の軸線方向に設定変更することにより、被取付部材の取付孔に対するネジ部の螺合量を任意に変更して、ゴム・エラストマー等の弾性体成形品を被取付部材上に取り付けることができる。よって、被取付部材に対するゴム・エラストマー等の弾性体成形品の取付高さが異なる場合でも、ゴム・エラストマー等の弾性体成形品を共通部品として使用することができる。また、回動規制手段がパーティングライン間の中央部において型抜き可能に設けられているため、複雑な金型を使用する必要がなく、簡単な金型構成でゴム・エラストマー等の弾性体成形品を成形することができる。
【０００８】
請求項２に記載の発明は、請求項１に記載の発明において、前記回動規制手段が、ネジ部のネジ溝の底部から型抜き方向に沿って立設されるとともに、ネジ部の軸線方向に並設された切除可能な複数の規制突起からなることを特徴とするものである。
【０００９】
従って、この請求項２に記載の発明によれば、被取付部材に対するゴム・エラストマー等の弾性体成形品の取付高さが多種類存在する場合でも、ネジ部上の所定位置の規制突起を残して、それよりも先端側に位置する規制突起を切除することにより、取付孔へのネジ部の螺合量を容易に変更することができる。
【００１０】
請求項３に記載の発明は、請求項２に記載の発明において、前記各規制突起と対向するネジ山の側面との間に隙間を設けたことを特徴とするものである。
従って、この請求項３に記載の発明によれば、規制突起とネジ山の側面との間の隙間にカッタ等を挿入して、規制突起を容易に切除することができる。
【００１１】
請求項４に記載の発明は、請求項２または請求項３に記載の発明において、前記複数の規制突起が、断面形状の異なるものからなることを特徴とするものである。
【００１２】
従って、この請求項４に記載の発明によれば、各規制突起の断面形状を目安にし、所定位置の規制突起を残して、それよりも先端側に位置する規制突起を正確に切除することができる。
【００１３】
請求項５に記載の発明は、請求項１に記載の発明において、前記回動規制手段が、ネジ山に軸線方向へ延長形成された切欠部と、隣接するネジ山の切欠部間に橋絡配置された規制突起とからなることを特徴とするものである。
【００１４】
従って、この請求項５に記載の発明によれば、被取付部材に対するゴム・エラストマー等の弾性体成形品の取付高さが多種類存在する場合でも、所定位置の隣接するネジ山の切欠部間に規制突起を橋絡配置することにより、取付孔へのネジ部の螺合量を容易に変更することができる。
【００１５】
請求項６に記載の発明は、請求項５に記載の発明において、前記各切欠部間のネジ溝に形状または個数の異なった係合凹部を形成し、それらの係合凹部に係合可能な係合突部を有する複数種の規制突起を用意したことを特徴とするものである。
【００１６】
従って、この請求項６に記載の発明によれば、係合凹部と係合突部とを形状または個数が一致するように係合させることにより、所定位置のネジ山の切欠部間に規制突起を正確に橋絡配置することができる。
【００１７】
請求項７に記載の発明は、請求項５または請求項６に記載の発明において、前記各切欠部と規制突起との間に規制突起を位置決め係止するための係止部を設けたことを特徴とするものである。
【００１８】
従って、この請求項７に記載の発明によれば、規制突起を係止部の係止作用にて、隣接するネジ山の切欠部間に確実に位置決め配置することができる。
【００１９】
【発明の実施の形態】
（第１実施形態）
以下に、この発明を車両におけるフードの閉鎖位置を規制するためのクッションストッパに具体化した第１実施形態を、図１〜図６に基づいて説明する。
【００２０】
図１に示すように、ゴム・エラストマー等の弾性体成形品（以下、単に成形品という）としてのクッションストッパ３１は全体がゴム材料等のエラストマーにより一体に形成され、その外周にはネジ部３２が設けられている。また、このクッションストッパ３１は、図６に示すように、接離可能な一対の成形型７０を使用して成形され、このため、クッションストッパ３１の外周両側面及び両端面にはパーティングライン３３が必然的に形成される。
【００２１】
一方、前記クッションストッパ３１を取り付けるための車体等の被取付部材３４には取付孔３５が形成され、その取付孔３５の内縁全体がほぼ螺旋状をなすように形成されている。取付孔３５の内縁の一部から外方に向かって切欠溝３６が形成されている。この切欠溝３６を境にして、取付孔３５の一側部３５ａが軸線方向の一方に偏倚されるとともに、他側部３５ｂが他方に偏倚されて、一側部３５ａと他側部３５ｂとの間に軸線方向における段差が生じている。そして、前記ネジ部３２を取付孔３５に螺合することにより、クッションストッパ３１が被取付部材３４上に取り付けられるようになっている。
【００２２】
図１〜図３に示すように、前記クッションストッパ３１の外周両側面に現れたパーティングライン３３間の中央部において、ネジ部３２のネジ溝３２ａには型抜き可能な形状の回動規制手段としての回動規制構造３７が設けられている。そして、クッションストッパ３１のネジ部３２が被取付部材３４の取付孔３５に螺合されるとき、この回動規制構造３７により取付孔３５に対するネジ部３２の螺合量が所定の回動規制位置にて規制されるようになっている。
【００２３】
すなわち、この実施形態の回動規制構造３７では、前記ネジ部３２の一側外面において軸線方向に並設されるように、ネジ部３２のネジ溝３２ａの底部には切除可能な複数の規制突起３８が前記成形型７０の型抜き方向（図６の矢印方向）に向かって突出形成されている。そして、これらの規制突起３８は、例えば円形、三角形、長方形、正方形等のように、それぞれ断面形状の異なったものから構成されている。規制突起３８とネジ山３２ｂの側面との間には隙間４０が設けられている。
【００２４】
そして、クッションストッパ３１を被取付部材３４に取り付ける場合には、必要に応じてネジ部３２上で所定位置より基端側（図１の上端側）に位置する規制突起３８を残して、先端側に位置する規制突起３８を切除する。この場合、切除する規制突起３８の選択は、規制突起３８の断面形状を目安にして行うことができる。また、切除は、ネジ溝３２ａに刃物を挿入して、規制突起３８を付根部付近から切断することにより行われる。従って、以上のようにネジ部３２上で所定位置より基端側に位置する規制突起３８を残すことにより、前記回動規制構造３７による規制位置がネジ部３２の軸線方向において変更可能である。
【００２５】
この状態で、ネジ部３２を被取付部材３４の取付孔３５に螺合させると、図３〜図５に示すように、所定位置に残された規制突起３８が切欠溝３６の一側縁３６ａに係合する。この係合により、取付孔３５に対するネジ部３２の螺合量が規制されて、クッションストッパ３１が被取付部材３４上の所定高さ位置に取り付けられる。
【００２６】
従って、この実施形態によれば、以下のような効果を得ることができる。
（１）このクッションストッパ３１においては、被取付部材３４の取付孔３５に螺合するためのネジ部３２が一体に形成されている。そして、ネジ部３２のネジ溝３２ａには型抜き可能な形状の回動規制構造３７が、パーティングライン３３間の中央部に設けられるとともに、その回動規制構造３７による規制位置がネジ部３２の軸線方向おいて変更可能である。
【００２７】
このため、回動規制構造３７の規制位置をネジ部３２の軸線方向に設定変更することにより、被取付部材３４の取付孔３５に対するネジ部３２の螺合量を任意に変更して、クッションストッパ３１を被取付部材３４上に取り付けることができる。よって、被取付部材３４に対するクッションストッパ３１の取付高さが異なる場合でも、クッションストッパ３１を共通部品として使用することができる。また、回動規制構造３７がパーティングライン３３間の中央部において型抜き可能に設けられているため、複雑な金型を使用する必要がなく、簡単な金型構成でクッションストッパ３１を成形することができる。
【００２８】
（２）このクッションストッパ３１においては、前記回動規制構造３７が、ネジ溝３２ａの底部から型抜き方向に沿って立設されるとともに、ネジ部３２の軸線方向に並設された切除可能な複数の規制突起３８からなっている。このため、被取付部材３４に対するクッションストッパ３１の取付高さが多種類必要な場合でも、ネジ部３２上の所定位置の規制突起３８を残して、それよりも先端側に位置する規制突起３８を切除することにより、取付孔３５へのネジ部３２の螺合量を容易に変更することができる。
【００２９】
（３）このクッションストッパ３１においては、前記複数の規制突起３８が、断面形状の異なったものから構成されている。このため、各規制突起３８の断面形状を目安にし、所定位置の規制突起３８を残して、それよりも先端側に位置する規制突起３８を正確に切除することができる。
【００３０】
（第２実施形態）
次に、この発明の第２実施形態を、前記第１実施形態と異なる部分を中心に説明する。
【００３１】
さて、この第２実施形態においては、図７に示すように、各規制突起３８と対向するように、ネジ部３２のネジ山３２ｂの両側面には凹所３９が形成され、これらの凹所３９により規制突起３８とネジ山３２ｂの側面との間には隙間４０が設けられている。各規制突起３８に対してネジ部３２の締め付け回動方向の下手側に位置するように、ネジ山３２ｂの両側面の凹所３９の端縁に、その凹所３９側に向かって広くなる傾斜状の保持部４２が形成されている。そして、ネジ部３２を被取付部材３４の取付孔３５に螺合する際に、規制突起３８が切欠溝３６の一側縁３６ａに係合して倒れるように弾性変形される。このとき、この保持部４２に規制突起３８が係合して、その規制突起３８の所定以上の変形が抑制されながら、保持部４２間に保持されるようになっている。
【００３２】
従って、この第２実施形態によれば、前記第１実施形態における（１）〜（３）に記載の効果に加えて、以下のような効果を得ることができる。
（４）このクッションストッパ３１においては、前記各規制突起３８と対向するネジ山３２ｂの側面に凹所３９が形成され、この凹所３９により規制突起３８とネジ山３２ｂの側面との間に隙間４０が設けられている。このため、規制突起３８とネジ山３２ｂの側面との間の隙間４０にカッタ等を挿入して、規制突起３８を容易に切除することができる。また、各規制突起３８をネジ溝３２ａの溝幅とほぼ同一またはそれよりも大きく形成することができて、それらの規制突起３８に所定の規制強度を確保することができる。
【００３３】
（５）このクッションストッパ３１においては、各規制突起３８と対応してネジ山３２ｂの側面に、凹所３９側に向かって広くなる保持部４２が形成されている。このため、この保持部４２において規制突起３８が所定以上に弾性変形するのを抑制することができるとともに、規制突起３８を保持することができて、取付孔３５に対するネジ部３２の位置関係を安定的に設定でき、ネジ部３２を取付孔３５に対して所定の螺合量に正確に回動規制することができる。
【００３４】
（第３実施形態）
次に、この発明の第３実施形態を、前記第１実施形態と異なる部分を中心に説明する。
【００３５】
さて、この第３実施形態においては、図８及び図９に示すように、回動規制構造３７が前記第１〜第３実施形態と相違している。すなわち、この実施形態の回動規制構造３７では、ネジ部３２のネジ山３２ｂに切欠部４４が軸線方向へ延びるように形成されている。また、クッションストッパ３１の本体部とは別に、そのクッションストッパ３１と同様のゴム材料よりなる規制突起４５が設けられている。そして、この規制突起４５が、所定位置の隣接するネジ山３２ｂの切欠部４４間に橋絡固定されて、ネジ溝３２ａ内に配置されるようになっている。なお、この第３実施形態及び第４実施形態以降の実施形態において規制突起４５の橋絡固定のために接着剤を用いてもよい。
【００３６】
従って、この第３実施形態によれば、前記第１実施形態における（１）に記載の効果に加えて、以下のような効果を得ることができる。
（７）このクッションストッパ３１においては、前記回動規制構造３７が、ネジ山３２ｂに軸線方向へ延長形成された切欠部４４と、隣接するネジ山３２ｂの切欠部４４間に橋絡配置された規制突起４５とからなっている。このため、被取付部材３４に対するクッションストッパ３１の取付高さが多種類存在する場合でも、所定位置の隣接するネジ山３２ｂの切欠部４４間に規制突起４５を橋絡配置することにより、取付孔３５へのネジ部３２の螺合量を容易に変更することができる。
【００３７】
（第４実施形態）
次に、この発明の第４実施形態を、前記第３実施形態と異なる部分を中心に説明する。
【００３８】
さて、この第４実施形態においては、図１０に示すように、規制突起４５の両側中央に一対の係止部４６が突出形成されている。そして、規制突起４５を所定位置の隣接するネジ山３２ｂの切欠部４４間に橋絡配置する際に、これらの係止部４６がネジ山３２ｂ間のネジ溝３２ａに係合されるようになっている。
【００３９】
従って、この第４実施形態によれば、前記各実施形態における（１）及び（７）に記載の効果に加えて、以下のような効果を得ることができる。
（８）このクッションストッパ３１においては、前記規制突起４５の両側中央にネジ山３２ｂ間のネジ溝３２ａに係合可能な係止部４６が形成されている。このため、両係止部をネジ溝３２ａに係合させることにより、規制突起４５を隣接するネジ山３２ｂの切欠部４４間に確実に位置決め配置することができる。
【００４０】
（第５実施形態）
次に、この発明の第５実施形態を、前記第３及び第４実施形態と異なる部分を中心に説明する。
【００４１】
さて、この第５実施形態においては、図１１に示すように、前記各切欠部４４の両側全面に楔状の係止凹部４７が形成され、切欠部４４全体が外端開口部ほど細幅の平面台形状となるように形成されている。また、規制突起４５の両側面には係止凹部４７に係合可能な楔状の係止突部４８が形成され、規制突起４５全体が断面台形状となるように形成されている。そして、規制突起４５を所定位置の隣接するネジ山３２ｂの切欠部４４間に橋絡配置する際に、係止突部４８が係止凹部４７に係合されるようになっている。なお、図１２に示すように、切欠部４４の両側が斜状をなす平面台形状をなしていても、型抜きにはほとんど問題がない。
【００４２】
従って、この第５実施形態によれば、前記各実施形態における（１）及び（７）に記載の効果に加えて、以下のような効果を得ることができる。
（９）このクッションストッパ３１においては、前記各切欠部４４の両側面に楔状の係止凹部４７が形成されている。また、規制突起４５の両側面には係止凹部４７に係合可能な楔状の係止突部４８が形成されている。このため、係止凹部４７と係止突部４８との楔係合により、規制突起４５を隣接するネジ山３２ｂの切欠部４４間に確実に位置決め保持することができる。
【００４３】
（第６実施形態）
次に、この発明の第６実施形態を、前記第３〜第５実施形態と異なる部分を中心に説明する。
【００４４】
さて、この第６実施形態においては、図１３に示すように、楔状の係止凹部４７が切欠部４４の両側面の奥部に形成されるとともに、楔状の係止突部４８が規制突起４５の両側面の内端縁に形成されている。なお、楔状の係止凹部４７を有する切欠部４４の型抜きが難しい場合には、図１４に示すように、クッションストッパ３１の軸線方向に抜き差しされる成形型としての中子７１を用いる。
【００４５】
従って、この第６実施形態においても、前記各実施形態における（１）、（７）及び（９）に記載の効果と同様の効果を得ることができる。
（第７実施形態）
次に、この発明の第７実施形態を、前記第３実施形態と異なる部分を中心に説明する。
【００４６】
さて、この第７実施形態においては、図１５に示すように、前記各切欠部４４間のネジ溝３２ａに係合凹部４９が形成され、それらの深さを変更することによって、各係合凹部４９の形状に差異が付けられている。また、この実施形態では複数種の規制突起４５が用意され、それらの規制突起４５には高さを変更することによって形状に差異が付けられた係合突部５０が形成されている。そして、規制突起４５を所定位置の隣接するネジ山３２ｂの切欠部４４間に橋絡配置する際に、深さの異なった係合凹部４９と高さの異なった係合突部５０との係合により、規制突起４５の配置箇所の良否を判別できるようになっている。
【００４７】
従って、この第７実施形態によれば、前記各実施形態における（１）及び（７）に記載の効果に加えて、以下のような効果を得ることができる。
（１０）このクッションストッパ３１においては、前記各切欠部４４間のネジ溝３２ａに、深さの異なった係合凹部４９がそれぞれ形成されている。また、複数種用意された規制突起４５には、前記各係合凹部４９に係合可能な高さの異なった係合突部５０が形成されている。このため、係合凹部４９と係合突部５０とをそれらの形状が一致するように係合させることにより、所定位置のネジ山３２ｂの切欠部４４間に規制突起４５を正確に橋絡配置することができる。
【００４８】
（第８実施形態）
次に、この発明の第８実施形態を、前記第３及び第７実施形態と異なる部分を中心に説明する。
【００４９】
さて、この第８実施形態においては、図１６に示すように、前記各切欠部４４間のネジ溝３２ａに、長さの異なった係合凹部４９がそれぞれ形成されている。また、複数種の規制突起４５には、各係合凹部４９に係合可能な長さの異なった係合突部５０が形成されている。そして、所定位置の切欠部４４間に対する規制突起４５の橋絡配置に際して、長さの異なった係合凹部４９と係合突部５０との係合により、規制突起４５の配置箇所の良否を判別できるようになっている。
【００５０】
従って、この第８実施形態においても、前記各実施形態における（１）、（７）及び（１０）に記載の効果と同様の効果を得ることができる。
（第９実施形態）
次に、この発明の第９実施形態を、前記第３、第７及び第８及び実施形態と異なる部分を中心に説明する。
【００５１】
さて、この第９実施形態においては、図１７に示すように、前記各切欠部４４間のネジ溝３２ａに、個数の異なった係合凹部４９がそれぞれ形成されている。また、複数種の規制突起４５には、各係合凹部４９に係合可能な個数の異なった係合突部５０が形成されている。そして、所定位置の切欠部４４間に対する規制突起４５の橋絡配置に際して、個数の異なった係合凹部４９と係合突部５０との係合により、規制突起４５の配置箇所の良否を判別できるようになっている。
【００５２】
従って、この第９実施形態においても、前記各実施形態における（１）、（７）及び（１０）に記載の効果と同様の効果を得ることができる。
（第１０実施形態）
次に、この発明の第１０実施形態を、前記第９実施形態と異なる部分を中心に説明する。
【００５３】
さて、この第１０実施形態では、図１８及び図１９に示すように、前記ネジ部３２上のパーティングライン３３間の中央部において、ネジ部３２の両側外周面に平坦部５１がネジ溝３２ａの底部付近まで切欠形成されている。また、この実施形態の回動規制構造３７では、ネジ溝３２ａと対応する位置において平坦部５１上に複数の係合溝５２がネジ部３２の軸線方向に配列形成されるとともに、規制突起４５には係合溝５２に係合可能な係合突起５３が形成されている。そして、係合突起５３を複数の係合溝５２に選択的に係合させることにより、規制突起４５を所定の規制位置に配置できるようになっている。
【００５４】
従って、この第１０実施形態によれば、前記第１実施形態における（１）に記載の効果に加えて、以下のような効果を得ることができる。
（１１）このクッションストッパ３１においては、前記回動規制構造３７が、ネジ部３２の外周の平坦部５１上にネジ部３２の軸線方向へ配列形成された複数の係合溝５２と、それらの係合溝５２に選択的に係合配置された規制突起４５とからなっている。このため、被取付部材３４に対するクッションストッパ３１の取付高さが多種類存在する場合でも、所定位置の係合溝５２に規制突起４５を係合配置することにより、取付孔３５へのネジ部３２の螺合量を容易に変更することができる。
【００５５】
（第１１実施形態）
次に、この発明の第１１実施形態を、前記第１及び第１０実施形態と異なる部分を中心に説明する。
【００５６】
さて、この第１１実施形態においては、図２０〜図２２に示すように、前記平坦部５１がネジ部３２の両側外周面に、ネジ山３２ｂの一部を残して形成されている。また、この実施形態の回動規制構造３７では、平坦部５１において隣接するネジ山３２ｂの残余部間に、軸線方向と直交する方向に延びる一対の挟持面よりなる挟着部５４がそれぞれ形成されるとともに、規制突起４５には挟着部５４に係合可能な被挟着部５５が突出形成されている。そして、被挟着部５５を複数の挟着部５４に選択的に係合させることにより、規制突起４５を所定の規制位置に配置できるようになっている。
【００５７】
従って、この第１１実施形態によれば、前記各実施形態における（１）に記載の効果に加えて、以下のような効果を得ることができる。
（１２）このクッションストッパ３１においては、前記回動規制構造３７が、平坦部５１において隣接するネジ山３２ｂの残余部間に形成された複数の挟着部５４と、それらの挟着部５４に選択的に挟着配置された規制突起４５とからなっている。このため、被取付部材３４に対するクッションストッパ３１の取付高さが多種類存在する場合でも、所定位置の挟着部５４に規制突起４５を挟着配置することにより、取付孔３５へのネジ部３２の螺合量を容易に変更することができる。
【００５８】
（変更例）
なお、この実施形態は、次のように変更して具体化することも可能である。
（ａ）図２３に示すように、前記第２実施形態において、回動規制構造３７の各規制突起３８を、例えば長方形等の同一断面形状のもので構成すること。
【００５９】
（ｂ）図２４に示すように、前記第１実施形態において、回動規制構造３７の各規制突起３８を、対向するネジ山３２ｂの側面に対して薄肉状の連結部５６を介して連結形成すること。
【００６０】
（ｃ）前記第１０及び第１１実施形態において、係合溝５２及び係合突起５３の形状または個数を、前記第７〜第９実施形態と同様に変更して設け、規制突起４５の配置箇所の良否を判別できるように構成すること。
【００６１】
（ｄ）前記各実施形態において、パーティングライン３３の中央部に位置するように、ネジ部３２の両側外周に回動規制構造３７を設けること。このように構成した場合には、被取付部材３４の取付孔３５に対するネジ部３２の螺合量を一層多段階に設定変更することができる。
【００６２】
（ｅ）前記第３実施形態以降の各実施形態の回動規制構造３７を、クッションストッパ３１とは異なった材質、例えば金属で構成して具体化すること。
（ｆ）図２５に示すように、前記第２実施形態において、凹所３９の傾斜状保持部４２を省略すること。
【００６３】
（ｇ）前記各実施形態の成形品を他の用途、例えば椅子の脚の下端に取り付けられるいわゆる足ゴムとして用いること。
（ｈ）成形品の全体剛性を向上させるために、その中心部に鉄系金属やアルミニウム合金等よりなる金属芯を埋設すること。
【００６４】
（ｉ）図２６に示すように、前記各実施形態において（図２６は第１実施形態の変形例を示す）、各規制突起３８の高さを異ならせること。このようにすれば、切除する規制突起３８を容易に認識できる。なお、規制突起３８の高さは、切除される確率が高い側、すなわち、成形品の先端側（図２６の下端側）のものほど高くなるのが望ましい。
【００６５】
（ｊ）成形品の各部、例えば頭部とネジ部３２とで材質を変えたり、あるいはネジ部３２のネジ溝３２ａの部分とネジ山３２ｂの部分とで材質を変えたりすること。すなわち、頭部としてエラストマー材料にするとともに、それ以外の部分を硬質合成樹脂にしたり、規制突起３８を有するネジ溝３２ａの部分をエラストマー材料にするとともに、ネジ山３２ｂの部分を硬質合成樹脂にしたりすること。
【００６６】
【発明の効果】
以上、実施形態で例示したように、この発明においては、被取付部材の取付孔に対するネジ部の螺合量を任意に設定変更して取り付けることができて、被取付部材に対する取付高さの異なった場合にも共用することができる。
【図面の簡単な説明】
【図１】第１実施形態のネジ部付き成形品を示す斜視図。
【図２】図１の成形品の部分拡大正面図。
【図３】図１の成形品の取付状態を示す拡大断面図。
【図４】図３の４−４線における断面図。
【図５】図２の成形品の作用状態を示す部分正面図。
【図６】第１実施形態のネジ部付き成形品及び成形型の断面図。
【図７】第２実施形態のネジ部付き成形品を示す部分正面図。
【図８】第３実施形態のネジ部付き成形品を示す分解斜視図。
【図９】図８の成形品の取付状態を示す拡大断面図。
【図１０】第４実施形態のネジ部付き成形品の要部分解斜視図。
【図１１】第５実施形態のネジ部付き成形品の要部分解斜視図。
【図１２】第５実施形態のネジ部付き成形品及び成形型の断面図。
【図１３】第６実施形態のネジ部付き成形品の要部分解斜視図。
【図１４】第６実施形態のネジ部付き成形品及び成形型の断面図。
【図１５】第７実施形態のネジ部付き成形品の要部分解断面図。
【図１６】第８実施形態のネジ部付き成形品の要部分解断面図。
【図１７】第９実施形態のネジ部付き成形品の要部分解断面図。
【図１８】第１０実施形態のネジ部付き成形品の正面図。
【図１９】図１８の１９−１９線における断面図。
【図２０】第１１実施形態のネジ部付き成形品の正面図。
【図２１】図２０の２１−２１線における断面図。
【図２２】図２０の２２−２２線における部分断面図。
【図２３】ネジ部付き成形品の変形例（ａ）を示す部分正面図。
【図２４】ネジ部付き成形品の変形例（ｂ）を示す部分正面図。
【図２５】ネジ部付き成形品の変形例（ｆ）を示す部分正面図。
【図２６】ネジ部付き成形品の変形例（ｉ）を示す部分正面図。
【図２７】従来のネジ部付き成形品を示す斜視図。
【符号の説明】
３１…ゴム・エラストマー等の弾性体成形品としてのクッションストッパ、３２…ネジ部、３２ａ…ネジ溝、３２ｂ…ネジ山、３３…パーティングライン、３４…被取付部材、３５…取付孔、３６…切欠溝、３７…回動規制手段としての回動規制構造、３８…規制突起、４０…隙間、４３…括れ部、４４…切欠部、４５…規制突起、４６…係止部、４７…係止凹部、４８…係止突部、４９…係合凹部、５０…係合突部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic molded article such as a rubber / elastomer with a threaded portion such as a cushion stopper that is screwed onto a vehicle body or the like of a vehicle in order to regulate a closed position of a hood hood of the vehicle, for example. In this specification, the elastic molded product such as rubber / elastomer with a threaded portion is described as being embodied as a cushion stopper. However, the present invention is not limited to the cushion stopper, and may be concretely used for spacers or various other purposes. It becomes.
[0002]
[Prior art]
Conventionally, as this type of elastic molded product such as a rubber / elastomer with a threaded portion, for example, a cushion stopper configured as shown in FIG. 27 is known. That is, the cushion stopper 61 is integrally formed of an elastomer such as rubber, and a threaded portion 62 is formed at one end thereof. An attachment hole 64 having a substantially spiral shape is formed in the attachment member 63 such as a hood. Then, by screwing the screw portion 62 into the mounting hole 64 of the mounted member 63, the cushion stopper 61 is mounted on the mounted member 63, and the hood hood or the like is received at the head 65. .
[0003]
[Problems to be solved by the invention]
By the way, this type of cushion stopper 61 is often attached as a common component to various vehicles. In this case, it is necessary to adjust and set the mounting height of the cushion stopper 61 on the mounted member 63 by adjusting the screwing amount of the screw portion 62 with respect to the mounting hole 64 of the mounted member 63. However, in the conventional configuration, since the screw portion 62 is simply formed on the cushion stopper 61, it is difficult to set the screwing amount of the screw portion 62 with respect to the mounting hole 64 to a predetermined amount, and skill is required. It was a thing.
[0004]
For this reason, it is conceivable that the screw groove is filled at an arbitrary position on the screw portion 62. However, in the case of such a configuration, it is necessary to prepare cushion stoppers 61 in which the protruding positions of the restricting protrusions are different for each of various vehicles and mounting locations, and the cushion stoppers 61 cannot be shared. It was. For this reason, it is necessary to prepare many types of molds, which causes an increase in cost.
[0005]
The present invention has been made paying attention to such problems existing in the prior art. The purpose of the screw part can be mounted by changing the screwing amount of the screw part to the mounting hole of the mounted member arbitrarily, and can be shared even when the mounting height to the mounted member is different An object of the present invention is to provide an elastic molded product such as a rubber or an elastomer.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, the invention according to claim 1 is an elastic molded article such as a rubber / elastomer formed with a threaded portion for screwing into a mounting hole of a mounted member. Is provided with a rotation restricting means that can be punched so that it can be located in the center between the parting lines, and the rotation restricting position by the rotation restricting means can be changed in the axial direction of the screw part. It is characterized by.
[0007]
Therefore, according to the first aspect of the present invention, the amount of screwing of the screw portion with respect to the mounting hole of the mounted member can be arbitrarily set by changing the restriction position of the rotation restricting means in the axial direction of the screw portion. By changing, it is possible to attach an elastic molded product such as rubber / elastomer onto the member to be attached. Therefore, even when the mounting height of the elastic molded product such as rubber or elastomer with respect to the mounted member is different, the elastic molded product such as rubber or elastomer can be used as a common part. In addition, since the rotation restricting means is provided in the central part between the parting lines so that it can be removed from the mold, there is no need to use a complicated mold, and elastic bodies such as rubber and elastomer can be molded with a simple mold configuration. The product can be molded.
[0008]
According to a second aspect of the present invention, in the first aspect of the invention, the rotation restricting means is erected from the bottom of the screw groove of the screw portion along the mold release direction, and the axial direction of the screw portion. It is characterized by comprising a plurality of resectable regulating protrusions arranged in parallel.
[0009]
Therefore, according to the second aspect of the present invention, even when there are many types of mounting heights of the elastic body such as rubber and elastomer with respect to the mounted member, the restricting projection at a predetermined position on the screw portion is left. Thus, the amount of screwing of the screw portion into the mounting hole can be easily changed by cutting away the restricting projection located on the tip side.
[0010]
According to a third aspect of the present invention, in the second aspect of the present invention, a gap is provided between each of the restricting protrusions and the side surface of the screw thread that faces the restricting protrusion.
Therefore, according to the third aspect of the present invention, it is possible to easily cut out the regulation protrusion by inserting a cutter or the like into the gap between the regulation protrusion and the side surface of the screw thread.
[0011]
According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the plurality of restricting protrusions have different cross-sectional shapes.
[0012]
Therefore, according to the fourth aspect of the present invention, it is possible to accurately cut away the restriction protrusions located on the tip side of the restriction protrusions in a predetermined position while using the cross-sectional shape of each restriction protrusion as a guideline. it can.
[0013]
According to a fifth aspect of the present invention, in the first aspect of the present invention, the rotation restricting means is a bridge between a notch portion extending in the axial direction of the screw thread and a notch portion of the adjacent screw thread. It consists of the arrangement | positioning control protrusion, It is characterized by the above-mentioned.
[0014]
Therefore, according to the fifth aspect of the present invention, even when there are various types of mounting heights of the elastic body such as rubber and elastomer with respect to the mounted member, the gap between the notch portions of the adjacent screw threads at the predetermined positions is present. By arranging the restricting projections in a bridging manner, the screwing amount of the screw portion to the mounting hole can be easily changed.
[0015]
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, engagement recesses having different shapes or numbers are formed in the thread grooves between the notches, and the engagement recesses can be engaged. A plurality of types of restricting protrusions having engaging protrusions are prepared.
[0016]
Therefore, according to the sixth aspect of the present invention, the engagement protrusions and the engagement protrusions are engaged with each other so that the shapes or the number of the engagement protrusions coincide with each other, whereby the restriction protrusions are formed between the notch portions of the thread at the predetermined position. Can be arranged in a precise bridge.
[0017]
According to a seventh aspect of the present invention, in the invention of the fifth or sixth aspect, a locking portion for positioning and locking the regulating projection is provided between each notch and the regulating projection. It is a feature.
[0018]
Therefore, according to the seventh aspect of the present invention, the restricting projection can be reliably positioned and disposed between the notch portions of the adjacent screw threads by the locking action of the locking portion.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied as a cushion stopper for regulating a closed position of a hood in a vehicle will be described with reference to FIGS.
[0020]
As shown in FIG. 1, a cushion stopper 31 as an elastic body molded product such as a rubber / elastomer (hereinafter simply referred to as a molded product) is integrally formed of an elastomer such as a rubber material, and a screw portion 32 is formed on the outer periphery thereof. Is provided. Further, as shown in FIG. 6, the cushion stopper 31 is formed by using a pair of molds 70 that can be contacted and separated. For this reason, the parting line 33 is provided on both outer peripheral side surfaces and both end surfaces of the cushion stopper 31. Is inevitably formed.
[0021]
On the other hand, a mounting hole 35 is formed in a mounting member 34 such as a vehicle body for mounting the cushion stopper 31, and the entire inner edge of the mounting hole 35 is formed in a substantially spiral shape. A notch groove 36 is formed outward from a part of the inner edge of the mounting hole 35. With this cutout groove 36 as a boundary, one side 35a of the mounting hole 35 is biased to one side in the axial direction, and the other side 35b is biased to the other, so that the one side 35a and the other side 35b There is a step in the axial direction between them. The cushion stopper 31 is mounted on the mounted member 34 by screwing the screw portion 32 into the mounting hole 35.
[0022]
As shown in FIGS. 1 to 3, in the central part between the parting lines 33 appearing on both outer peripheral side surfaces of the cushion stopper 31, a rotation restricting means having a shape that can be removed from the die in the screw groove 32 a of the screw part 32. A rotation restricting structure 37 is provided. When the screw portion 32 of the cushion stopper 31 is screwed into the mounting hole 35 of the attached member 34, the screwing amount of the screw portion 32 with respect to the mounting hole 35 is set to a predetermined rotation restricting position by the rotation restricting structure 37. Is now regulated.
[0023]
That is, in the rotation restricting structure 37 of this embodiment, a plurality of restricting protrusions that can be excised at the bottom of the screw groove 32a of the screw portion 32 so as to be arranged in parallel in the axial direction on one outer surface of the screw portion 32. 38 is formed so as to protrude in the mold drawing direction of the mold 70 (the arrow direction in FIG. 6). These restricting protrusions 38 are formed of different cross-sectional shapes such as a circle, a triangle, a rectangle, and a square. A gap 40 is provided between the restriction protrusion 38 and the side surface of the screw thread 32b.
[0024]
And when attaching the cushion stopper 31 to the to-be-attached member 34, the front-end | tip side is left leaving the control protrusion 38 located in the base end side (upper end side of FIG. 1) from the predetermined position on the screw part 32 as needed. The restricting projection 38 located at is cut off. In this case, the selection of the restricting protrusion 38 to be cut can be performed using the cross-sectional shape of the restricting protrusion 38 as a guide. The excision is performed by inserting a cutter into the thread groove 32a and cutting the regulating projection 38 from the vicinity of the root portion. Therefore, the restriction position by the rotation restricting structure 37 can be changed in the axial direction of the screw part 32 by leaving the restriction protrusion 38 positioned on the base end side from the predetermined position on the screw part 32 as described above.
[0025]
In this state, when the threaded portion 32 is screwed into the mounting hole 35 of the mounted member 34, as shown in FIGS. 3 to 5, the restricting projection 38 left in a predetermined position is one side edge 36a of the notch groove 36. Engage with. By this engagement, the screwing amount of the screw portion 32 with respect to the attachment hole 35 is restricted, and the cushion stopper 31 is attached at a predetermined height position on the attached member 34.
[0026]
Therefore, according to this embodiment, the following effects can be obtained.
(1) In the cushion stopper 31, a screw portion 32 for screwing into the mounting hole 35 of the mounted member 34 is integrally formed. The screw groove 32 a of the screw part 32 is provided with a rotation restricting structure 37 having a shape that can be removed from the mold at the center between the parting lines 33, and the restricting position by the turn restricting structure 37 is the screw part 32. It can be changed in the axial direction.
[0027]
For this reason, by changing the setting position of the rotation restricting structure 37 in the axial direction of the screw portion 32, the screwing amount of the screw portion 32 with respect to the attachment hole 35 of the attached member 34 can be arbitrarily changed, and the cushion stopper 31 can be mounted on the mounted member 34. Therefore, even when the mounting height of the cushion stopper 31 with respect to the mounted member 34 is different, the cushion stopper 31 can be used as a common component. Further, since the rotation restricting structure 37 is provided at the central portion between the parting lines 33 so that the mold can be removed, it is not necessary to use a complicated mold, and the cushion stopper 31 is formed with a simple mold configuration. be able to.
[0028]
(2) In this cushion stopper 31, the rotation restricting structure 37 is erected from the bottom of the screw groove 32a along the mold releasing direction, and can be removed in parallel along the axial direction of the screw portion 32. It consists of a plurality of restricting projections 38. For this reason, even when a variety of mounting heights of the cushion stopper 31 with respect to the mounted member 34 are required, the restricting protrusion 38 located at the front end side of the restricting protrusion 38 at a predetermined position on the screw portion 32 is left. By cutting out, the screwing amount of the screw portion 32 into the mounting hole 35 can be easily changed.
[0029]
(3) In the cushion stopper 31, the plurality of restricting protrusions 38 are configured with different cross-sectional shapes. For this reason, using the cross-sectional shape of each restricting protrusion 38 as a guide, the restricting protrusion 38 positioned at the front end side can be accurately excised while leaving the restricting protrusion 38 at a predetermined position.
[0030]
(Second Embodiment)
Next, a second embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0031]
In the second embodiment, as shown in FIG. 7, recesses 39 are formed on both side surfaces of the thread 32 b of the screw portion 32 so as to face the restricting protrusions 38. 39, a clearance 40 is provided between the regulation protrusion 38 and the side surface of the thread 32 b. Inclination which becomes wide toward the recess 39 side at the edge of the recess 39 on both side surfaces of the screw thread 32b so as to be positioned on the lower side in the tightening rotation direction of the screw portion 32 with respect to each regulating projection 38 A holding portion 42 is formed. When the screw portion 32 is screwed into the mounting hole 35 of the mounted member 34, the restricting protrusion 38 is elastically deformed so as to be engaged with the one side edge 36 a of the notch groove 36 and fall down. At this time, the restricting projections 38 are engaged with the holding portions 42 and are held between the holding portions 42 while suppressing deformation of the restricting projections 38 beyond a predetermined level.
[0032]
Therefore, according to the second embodiment, in addition to the effects described in (1) to (3) in the first embodiment, the following effects can be obtained.
(4) In the cushion stopper 31, a recess 39 is formed on the side surface of the thread 32 b facing each of the regulation protrusions 38, and the recess 39 forms a gap between the regulation projection 38 and the side of the thread 32 b. 40 is provided. For this reason, a cutter etc. can be inserted in the clearance gap 40 between the control protrusion 38 and the side surface of the screw thread 32b, and the control protrusion 38 can be easily excised. In addition, each restricting protrusion 38 can be formed to be substantially the same as or larger than the groove width of the screw groove 32a, and a predetermined restricting strength can be ensured for these restricting protrusions 38.
[0033]
(5) In the cushion stopper 31, a holding portion 42 is formed on the side surface of the screw thread 32 b corresponding to each regulation protrusion 38 and widens toward the recess 39. For this reason, it is possible to suppress the restricting protrusion 38 from being elastically deformed more than a predetermined amount in the holding portion 42, and it is possible to hold the restricting protrusion 38 and to stabilize the positional relationship of the screw portion 32 with respect to the mounting hole 35. Accordingly, the rotation of the screw portion 32 with respect to the attachment hole 35 can be accurately regulated to a predetermined screwing amount.
[0034]
(Third embodiment)
Next, a third embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0035]
In the third embodiment, as shown in FIGS. 8 and 9, the rotation restricting structure 37 is different from the first to third embodiments. That is, in the rotation restricting structure 37 of this embodiment, the notch 44 is formed in the thread 32b of the screw 32 so as to extend in the axial direction. In addition to the main body portion of the cushion stopper 31, a restriction projection 45 made of the same rubber material as that of the cushion stopper 31 is provided. The restricting protrusion 45 is bridge-fixed between the notches 44 of the adjacent thread 32b at a predetermined position and is arranged in the screw groove 32a. In the third embodiment and the fourth and subsequent embodiments, an adhesive may be used for bridging fixing of the regulation protrusion 45.
[0036]
Therefore, according to the third embodiment, in addition to the effect described in (1) in the first embodiment, the following effect can be obtained.
(7) In this cushion stopper 31, the rotation restricting structure 37 is arranged in a bridge between the notch 44 formed in the axial direction in the thread 32b and the notch 44 of the adjacent thread 32b. It consists of a restriction projection 45. For this reason, even when there are many types of mounting heights of the cushion stopper 31 with respect to the mounted member 34, the restriction projections 45 are arranged in a bridging manner between the notches 44 of the adjacent threads 32b at predetermined positions, thereby mounting holes The screwing amount of the screw portion 32 to 35 can be easily changed.
[0037]
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with a focus on differences from the third embodiment.
[0038]
In the fourth embodiment, as shown in FIG. 10, a pair of locking portions 46 are formed to protrude at the center of both sides of the restriction projection 45. When the restricting protrusion 45 is arranged in a bridging manner between the notches 44 of the adjacent screw threads 32b at predetermined positions, these locking portions 46 are engaged with the screw grooves 32a between the screw threads 32b. ing.
[0039]
Therefore, according to the fourth embodiment, in addition to the effects described in (1) and (7) in the respective embodiments, the following effects can be obtained.
(8) In the cushion stopper 31, a locking portion 46 that can be engaged with the screw groove 32 a between the screw threads 32 b is formed at the center of both sides of the restricting protrusion 45. For this reason, the engaging protrusions can be engaged with the screw grooves 32a, so that the restricting projections 45 can be reliably positioned between the notches 44 of the adjacent screw threads 32b.
[0040]
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with a focus on differences from the third and fourth embodiments.
[0041]
In the fifth embodiment, as shown in FIG. 11, wedge-shaped locking recesses 47 are formed on both sides of each notch 44, and the entire notch 44 is a flat surface that is as narrow as the outer end opening. It is formed to be trapezoidal. Further, wedge-shaped locking projections 48 that can be engaged with the locking recesses 47 are formed on both side surfaces of the regulation projection 45, and the entire regulation projection 45 is formed in a trapezoidal cross section. The locking protrusion 48 is engaged with the locking recess 47 when the restriction protrusion 45 is bridged between the notches 44 of the adjacent threads 32b at predetermined positions. In addition, as shown in FIG. 12, even if both sides of the cutout portion 44 have a flat trapezoidal shape with an oblique shape, there is almost no problem in die cutting.
[0042]
Therefore, according to the fifth embodiment, in addition to the effects described in the above embodiments (1) and (7), the following effects can be obtained.
(9) In the cushion stopper 31, wedge-shaped locking recesses 47 are formed on both side surfaces of the notches 44. In addition, wedge-shaped locking protrusions 48 that can be engaged with the locking recesses 47 are formed on both side surfaces of the restriction protrusion 45. For this reason, the wedge-engagement between the locking recess 47 and the locking protrusion 48 enables the restriction protrusion 45 to be reliably positioned and held between the notches 44 of the adjacent thread 32b.
[0043]
(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with a focus on differences from the third to fifth embodiments.
[0044]
In the sixth embodiment, as shown in FIG. 13, a wedge-shaped locking recess 47 is formed at the back of both side surfaces of the notch 44, and a wedge-shaped locking protrusion 48 is a restriction protrusion 45. It is formed in the inner edge of both side surfaces. If it is difficult to mold the notch 44 having the wedge-shaped locking recess 47, a core 71 is used as a molding die that is inserted and removed in the axial direction of the cushion stopper 31 as shown in FIG.
[0045]
Therefore, also in the sixth embodiment, the same effects as those described in (1), (7), and (9) in each of the above embodiments can be obtained.
(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with a focus on differences from the third embodiment.
[0046]
In the seventh embodiment, as shown in FIG. 15, the engagement recesses 49 are formed in the thread grooves 32a between the notches 44, and by changing the depths, the engagement recesses 49 are formed. 49 is different in shape. In this embodiment, a plurality of types of restricting protrusions 45 are prepared, and the engaging protrusions 50 having different shapes are formed on the restricting protrusions 45 by changing the height. Then, when the restriction protrusion 45 is arranged in a bridge between the notches 44 of the adjacent threads 32b at predetermined positions, the engagement recesses 49 having different depths and the engagement protrusions 50 having different heights are engaged. As a result, it is possible to determine whether the location of the restricting protrusion 45 is good or bad.
[0047]
Therefore, according to the seventh embodiment, in addition to the effects described in (1) and (7) in the respective embodiments, the following effects can be obtained.
(10) In the cushion stopper 31, engagement concave portions 49 having different depths are formed in the thread grooves 32 a between the cutout portions 44. In addition, a plurality of types of regulating protrusions 45 are formed with engaging protrusions 50 having different heights that can be engaged with the respective engaging recesses 49. For this reason, the engagement protrusion 49 and the engagement protrusion 50 are engaged with each other so that their shapes coincide with each other, whereby the restriction protrusion 45 is accurately arranged between the cutout portions 44 of the thread 32b at a predetermined position. can do.
[0048]
(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described centering on differences from the third and seventh embodiments.
[0049]
In the eighth embodiment, as shown in FIG. 16, engaging recesses 49 having different lengths are formed in the thread grooves 32a between the notches 44, respectively. Further, the plurality of types of restricting protrusions 45 are formed with engaging protrusions 50 having different lengths that can be engaged with the engaging recesses 49. Then, when the restriction projection 45 is bridged between the notch portions 44 at predetermined positions, whether the restriction projection 45 is disposed or not is determined by the engagement of the engagement recesses 49 and the engagement projections 50 having different lengths. It can be done.
[0050]
Therefore, also in the eighth embodiment, the same effects as those described in (1), (7), and (10) in each of the above embodiments can be obtained.
(Ninth embodiment)
Next, a ninth embodiment of the present invention will be described focusing on the differences from the third, seventh, eighth and eighth embodiments.
[0051]
In the ninth embodiment, as shown in FIG. 17, engaging recesses 49 having different numbers are formed in the thread grooves 32a between the notches 44, respectively. In addition, the plurality of types of restriction protrusions 45 are formed with different numbers of engagement protrusions 50 that can be engaged with the respective engagement recesses 49. When the restriction protrusions 45 are arranged in a bridge between the notch portions 44 at predetermined positions, whether the restriction protrusions 45 are disposed or not can be determined by the engagement of the engagement recesses 49 and the engagement protrusions 50 having different numbers. It is like that.
[0052]
Therefore, also in the ninth embodiment, the same effects as the effects described in (1), (7), and (10) in the respective embodiments can be obtained.
(10th Embodiment)
Next, a tenth embodiment of the present invention will be described with a focus on differences from the ninth embodiment.
[0053]
Now, in the tenth embodiment, as shown in FIGS. 18 and 19, flat portions 51 are formed on the outer peripheral surfaces on both sides of the screw portion 32 at the center between the parting lines 33 on the screw portion 32. A notch is formed up to near the bottom. Further, in the rotation restricting structure 37 of this embodiment, a plurality of engaging grooves 52 are arranged in the axial direction of the screw portion 32 at the position corresponding to the screw groove 32 a and are also formed on the restricting protrusion 45. An engaging projection 53 that can be engaged with the engaging groove 52 is formed. The restricting protrusion 45 can be arranged at a predetermined restricting position by selectively engaging the engaging protrusion 53 with the plurality of engaging grooves 52.
[0054]
Therefore, according to the tenth embodiment, in addition to the effect described in (1) in the first embodiment, the following effect can be obtained.
(11) In the cushion stopper 31, the rotation restricting structure 37 includes a plurality of engagement grooves 52 arranged in the axial direction of the screw portion 32 on the flat portion 51 on the outer periphery of the screw portion 32, and the engagement grooves 52. It comprises a restricting protrusion 45 that is selectively engaged with the engaging groove 52. For this reason, even when there are many types of mounting heights of the cushion stopper 31 with respect to the mounted member 34, the screw portion 32 to the mounting hole 35 can be obtained by engaging and arranging the restricting protrusion 45 in the engaging groove 52 at a predetermined position. The amount of screwing can be easily changed.
[0055]
(Eleventh embodiment)
Next, an eleventh embodiment of the present invention will be described with a focus on differences from the first and tenth embodiments.
[0056]
In the eleventh embodiment, as shown in FIGS. 20 to 22, the flat portion 51 is formed on both outer peripheral surfaces of the screw portion 32 while leaving a part of the screw thread 32 b. Further, in the rotation restricting structure 37 of this embodiment, the sandwiching portions 54 each including a pair of sandwiching surfaces extending in the direction orthogonal to the axial direction are formed between the remaining portions of the adjacent screw threads 32b in the flat portion 51. In addition, a clamped portion 55 that can be engaged with the clamped portion 54 is formed on the restriction projection 45 so as to protrude. The restricting protrusion 45 can be arranged at a predetermined restricting position by selectively engaging the sandwiched portion 55 with the plurality of sandwiching portions 54.
[0057]
Therefore, according to the eleventh embodiment, in addition to the effect described in (1) in each of the above embodiments, the following effect can be obtained.
(12) In the cushion stopper 31, the rotation restricting structure 37 is formed on the plurality of sandwiching portions 54 formed between the remaining portions of the adjacent threads 32 b in the flat portion 51, and the sandwiching portions 54. It comprises a restricting protrusion 45 that is selectively sandwiched. For this reason, even when there are many types of attachment heights of the cushion stopper 31 with respect to the attached member 34, the screw portion 32 to the attachment hole 35 can be obtained by sandwiching the restricting protrusion 45 on the sandwiching portion 54 at a predetermined position. The amount of screwing can be easily changed.
[0058]
(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
(A) As shown in FIG. 23, in the second embodiment, each restricting protrusion 38 of the rotation restricting structure 37 is formed of the same cross-sectional shape such as a rectangle.
[0059]
(B) As shown in FIG. 24, in the first embodiment, the restricting protrusions 38 of the rotation restricting structure 37 are connected to the side surfaces of the opposing screw threads 32b via thin-walled connecting portions 56. To do.
[0060]
(C) In the tenth and eleventh embodiments, the shape or the number of the engagement grooves 52 and the engagement protrusions 53 are changed in the same manner as in the seventh to ninth embodiments. It should be configured so that the quality of the product can be determined.
[0061]
(D) In each of the above embodiments, the rotation restricting structure 37 is provided on the outer periphery on both sides of the screw portion 32 so as to be positioned at the center of the parting line 33. In the case of such a configuration, the screwing amount of the screw portion 32 with respect to the mounting hole 35 of the mounted member 34 can be set and changed in more stages.
[0062]
(E) The rotation restricting structure 37 of each embodiment after the third embodiment is made of a material different from the cushion stopper 31, for example, metal, and embodied.
(F) As shown in FIG. 25, the inclined holding part 42 of the recess 39 is omitted in the second embodiment.
[0063]
(G) The molded product of each of the embodiments is used for other purposes, for example, as a so-called foot rubber attached to the lower end of a chair leg.
(H) In order to improve the overall rigidity of the molded product, a metal core made of an iron-based metal, an aluminum alloy, or the like is embedded in the center thereof.
[0064]
(I) As shown in FIG. 26, in each of the embodiments described above (FIG. 26 shows a modification of the first embodiment), the heights of the restricting protrusions 38 are made different. In this way, it is possible to easily recognize the regulation protrusion 38 to be excised. In addition, it is desirable that the height of the restricting protrusion 38 be higher on the side where the probability of being cut is higher, that is, on the tip side of the molded product (lower end side in FIG. 26).
[0065]
(J) The material of each part of the molded product, for example, the head portion and the screw portion 32 is changed, or the material is changed between the screw groove 32a portion and the screw thread 32b portion of the screw portion 32. That is, the head is made of an elastomer material, the other part is made of a hard synthetic resin, the part of the screw groove 32a having the restricting projection 38 is made of an elastomer material, and the part of the screw thread 32b is made of a hard synthetic resin. To do.
[0066]
【The invention's effect】
As described above in the embodiment, in the present invention, the screwing amount of the screw portion with respect to the mounting hole of the mounted member can be arbitrarily set and mounted, and the mounting height with respect to the mounted member is different. Can be shared.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a molded product with a threaded portion of a first embodiment.
FIG. 2 is a partially enlarged front view of the molded product of FIG.
FIG. 3 is an enlarged cross-sectional view showing an attached state of the molded product of FIG. 1;
4 is a cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is a partial front view showing an operation state of the molded product of FIG. 2;
FIG. 6 is a cross-sectional view of a molded article with a threaded portion and a mold according to the first embodiment.
FIG. 7 is a partial front view showing a molded product with a threaded portion of a second embodiment.
FIG. 8 is an exploded perspective view showing a molded product with a threaded portion of a third embodiment.
9 is an enlarged cross-sectional view showing an attached state of the molded product of FIG.
FIG. 10 is an exploded perspective view of a main part of a molded product with a screw part according to a fourth embodiment.
FIG. 11 is an exploded perspective view of a main part of a molded product with a screw part according to a fifth embodiment.
FIG. 12 is a cross-sectional view of a molded article with a threaded portion and a mold according to a fifth embodiment.
FIG. 13 is an exploded perspective view of a main part of a molded product with a screw part according to a sixth embodiment.
FIG. 14 is a cross-sectional view of a molded article with a threaded portion and a mold according to a sixth embodiment.
FIG. 15 is an exploded cross-sectional view of a main part of a molded product with a threaded portion according to a seventh embodiment.
FIG. 16 is an exploded cross-sectional view of a main part of a molded product with a threaded portion according to an eighth embodiment.
FIG. 17 is an exploded cross-sectional view of a main part of a molded product with a threaded portion according to a ninth embodiment.
FIG. 18 is a front view of a molded product with a threaded portion according to a tenth embodiment.
19 is a cross-sectional view taken along line 19-19 in FIG.
FIG. 20 is a front view of a molded product with a threaded portion according to an eleventh embodiment.
21 is a cross-sectional view taken along line 21-21 in FIG.
22 is a partial cross-sectional view taken along line 22-22 in FIG. 20;
FIG. 23 is a partial front view showing a modified example (a) of a molded product with a threaded portion.
FIG. 24 is a partial front view showing a modified example (b) of the molded article with a threaded portion.
FIG. 25 is a partial front view showing a modified example (f) of a molded product with a threaded portion.
FIG. 26 is a partial front view showing a modified example (i) of a molded product with a threaded portion.
FIG. 27 is a perspective view showing a conventional molded product with a threaded portion.
[Explanation of symbols]
31 ... Cushion stopper as an elastic molded product such as rubber / elastomer, 32 ... Screw portion, 32a ... Screw groove, 32b ... Screw thread, 33 ... Parting line, 34 ... Mounted member, 35 ... Mounting hole, 36 ... Notch groove 37... Rotation restricting structure as a rotation restricting means 38. Restricting projection 40. Gap 43. Constricted portion 44. Notched portion 45. Restricting projection 46. Locking portion 47. Recessed portion 48... Locking protrusion 49. Engaging recess 50. Engaging protrusion.

Claims

In an elastic molded product such as rubber or elastomer that has a threaded portion for screwing into a mounting hole of a mounted member,
The screw part is provided with a rotation restricting means that can be removed from the mold so as to be located in the center between the parting lines, and the rotation restricting position by the rotation restricting means can be changed in the axial direction of the screw part. An elastic molded article such as a rubber / elastomer with a threaded portion, characterized in that it is provided in

The rotation restricting means is provided with a plurality of resectable restricting protrusions arranged in parallel in the axial direction of the screw portion, and standing from the bottom of the screw groove of the screw portion toward the mold release direction. An elastic body molded article such as rubber / elastomer with a threaded portion according to claim 1.

3. The elastic molded article such as a rubber / elastomer with a threaded portion according to claim 2, wherein a gap is provided between each of the restricting protrusions and a side surface of the screw thread facing each other.

The elastic molded article such as a rubber / elastomer with a threaded portion according to claim 2 or 3, wherein the plurality of restricting protrusions are made of different cross-sectional shapes.

The said rotation control means consists of the notch part extendedly formed in the axial direction by the thread, and the control protrusion arrange | positioned by bridging between the notches of the adjacent thread. Elastic molded products such as rubber and elastomer with threaded parts.

A plurality of types of restricting protrusions having engaging protrusions that are engageable with the engaging recesses are formed by forming engaging recesses having different shapes or numbers in the thread grooves between the notches. An elastic body molded article such as a rubber / elastomer with a threaded portion according to claim 5.

7. An elastic portion such as a rubber-elastomer with a threaded portion according to claim 5 or 6, wherein a locking portion for positioning and locking the restriction protrusion is provided between each notch portion and the restriction protrusion. Body molded product.