JP3742535B2

JP3742535B2 - Check arm and manufacturing method thereof

Info

Publication number: JP3742535B2
Application number: JP22629099A
Authority: JP
Inventors: 敏行松本
Original assignee: Shiroki Corp
Current assignee: Shiroki Corp
Priority date: 1999-08-10
Filing date: 1999-08-10
Publication date: 2006-02-08
Anticipated expiration: 2019-08-10
Also published as: JP2001049929A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のドアチェック装置に用いられるチェックアームおよびそれを製造する方法に関し、詳しくは芯材をインサートした樹脂製アームおよびそれを成形型で製造する方法に関する。
【０００２】
【従来の技術】
芯材のインサート成形により製造された樹脂製アームを用いたドアチェック装置として、図７に示すものがある。図７は、従来の樹脂製アームを示す斜視図である。図７に示すドアチェック装置は、一端を車体に回動可能に枢支された芯材１と樹脂部２とから成るアーム３と、アーム３の長手方向に沿って摺動可能に嵌合した摺動体と、から成る。樹脂部２は、その長手方向中間部から他端にかけて複数の突部が形成される。摺動体は、摺動ケースと、該摺動ケースに収容された滑り部材と、クッション部材と、を有する。また滑り部材は、アーム３の外面に当接し、その外面に対して接近又は離隔する方向に移動可能に摺動体ケースに収容され、摺動体の摺動時にアーム３の外面に当接しつつアーム３の長手方向に移動する。クッション部材は、アーム３の外面に当接する滑り部材の当接面と反対側の背面に隣接して位置し、滑り部材をアーム３の外面に圧接させる弾性体から構成される。
【０００３】
ドアが全閉位置にあるとき、摺動体の滑り部材はアーム３の一端側に位置し、ドアが全閉位置から半開位置まで回動し、これに伴って滑り部材が樹脂部２の突部に至ると、クッション部材は滑り部材を介して押圧され圧縮変形させられる。このとき、その弾力によって、滑り部材とアーム３との間に大きな摩擦抵抗が発生し、ドアに大きな回動抵抗が加えられる。このようにして、ドアの開度を段階的に規制することができる。
【０００４】
ドアに対してさらに回動力を加えていくと、滑り部材は樹脂部２の突部を乗り越えて溝部に至り、クッション部材は元の状態に弾性復帰し、滑り部材とアーム３との間の摩擦抵抗が減少し、ドアへの回動抵抗も減少する。さらに滑り部材は樹脂部２の突部に至り、突部を乗り越えて溝部に至り、突部に至り、突部を乗り越えてアーム３の他端側に至る。これと同時に摺動体は芯材１の他端側に設けられた角穴１ａに嵌合したストッパ部材１１に当接し、この状態でドアは全開位置になる。
【０００５】
上述のドアチェック装置において、芯材がインサートされた樹脂製アームの製造方法として、図８に示すものがある。図８は、従来の樹脂製アームの製造方法を示す断面図である。まず成形型２００に芯材１を固定する。この際芯材１の回動方向の位置決めとして下型３００のピン３００ａおよび段付ピン３００ｂの小径部３００ｃをそれぞれ芯材１の他端側に設けられた角穴１ａおよび芯材１に設けられた穴１ｂに挿嵌すると共に、芯材１の板厚方向の位置決めとして角穴１ａおよび穴１ｂ周縁をそれぞれ下型３００の挟持部３００ｅ、段付ピンの大径部３００ｄ上面および上型４００の挟持部４００ａ、ピン４００ｂ下面により挟持する。この状態で成形型２００に樹脂を流し込む。尚、穴１ｂが穿設される範囲は、アーム３の樹脂部２がブラケット１２の側壁１２ｅ、１２ｆと摺接し、これらの間に回動可能に枢支される取付部２ａと連設して設けられ取付部２ａより薄い直線部２ｂ内部であればよい。
【０００６】
従って、直線部２ｂの表面に穴２ｉが空いてしまう（当然直線部２ｂの穴２ｉが空いている面の反対側の面にも同様な穴が空いてしまう）。そこで、従来は穴２ｉが目立たないように芯材１に樹脂部２と同色のメッキをしていた。
【０００７】
【発明が解決しようとする課題】
上述のドアチェック装置において、成形型２００に樹脂部２一端側の取付部２ａに取付穴２ｈを成形するためのピン３００ｆおよびピン４００ｃを含めると５箇所もピンを設ける必要があるため型費が高くなるという問題がある。また、芯材１に樹脂部２と同色のメッキをする必要があるため製品コストが高くなるという問題がある。
【０００８】
本発明は、上記問題を解決するためになされたものであり、型費が安く、製品コストも安い樹脂製アームおよびその製造方法を提供することを課題とする。
【０００９】
【課題を解決するための手段】
請求項１記載の発明は、一端側および他端側に穴が穿設された芯材と、該芯材の表面に被装され該芯材の一端側の該穴と同軸上に取付穴が形成されその長手方向中間部から他端部にかけて少なくとも一以上の突部が形成された樹脂部と、から成り、前記一端側の穴に挿通される円形断面の取付ピンでもって、前記一端側を、車体に取り付けられたブラケットに回動可能に枢支されたアームと、ドアに一体に取り付けられ該アームに摺動可能に嵌合された摺動体と、を備え、前記ドアの開度を段階的に規制するドアチェック装置において、前記アームの一端側の前記樹脂部に、前記取付穴から放射線状に延びる少なくとも一以上の位置決め溝を設けることにより、前記芯材の前記穴周辺に樹脂に覆われていない挟持部を形成したことを特徴とするチェックアームを提供する。
【００１０】
請求項２記載の発明は、一端側および他端側に穴が穿設された芯材と、該芯材の表面に被装され該芯材の一端側の該穴と同軸上に取付穴が形成されその長手方向中間部から他端部にかけて少なくとも一以上の突部が形成された樹脂部と、から成り車体に回動可能に枢支されたアームと、ドアに一体に取り付けられ該アームに摺動可能に嵌合された摺動体と、を備え、前記ドアの開度を段階的に規制するドアチェック装置において、まず、前記芯材を成形型に固定するための回動方向の位置決めとして該芯材の一端側および他端側にそれぞれ穿設された前記穴に下型の突起が挿嵌され、板厚方向の位置決めとして回動方向の位置決めとして用いた穴の周縁が上型と下型の挟持部により挟持され、次に成形型に樹脂が流し込まれるチェックアームの製造方法を提供する。
【００１１】
請求項３記載の発明は、芯材の一端側に穿設された穴の回動方向の位置決めとしての下型に設けられた突起はピンの外周から放射線状に延設された段付リブの幅狭部であり、回動方向の位置決めとして用いた穴の板厚方向の位置決めとして下型に設けられた挟持部は前記段付リブの幅広部であり、上型に設けられた挟持部はピンの外周から放射線状に延設されたリブの下面である請求項２記載のチェックアームの製造方法を提供する。
【００１３】
請求項４記載の発明は、一端側および他端側に穴が穿設された芯材と、該芯材の表面に被装され該芯材の一端側の該穴と同軸上に取付穴が形成されその長手方向中間部から他端部にかけて少なくとも一以上の突部が形成された樹脂部と、から成り車体に回動可能に枢支されたアームと、ドアに一体に取り付けられ該アームに摺動可能に嵌合された摺動体と、を備え、前記ドアの開度を段階的に規制するドアチェック装置において、まず、前記芯材を成形型に固定するための回動方向の位置決めとして該芯材の他端側に穿設された前記穴および前記芯材の一端側に穿設された前記穴の周囲に隣接して穿設された該穴とは異なる少なくとも一以上の穴に下型の突起が挿嵌され、板厚方向の位置決めとして回動方向の位置決めとして用いた穴の周縁が上型と下型の挟持部により挟持され、次に成形型に樹脂が流し込まれるチェックアームの製造方法を提供する。
【００１４】
【発明の実施の形態】
（第１形態例）
以下、図１ないし図５を用いて発明の第１形態例を説明する。図１は、発明の第１形態例に係る樹脂製アームを示す斜視図である。図２は、図１に示した樹脂製アームの要部拡大図である。図３は、本発明に係る摺動体を示す分解斜視図である。図４は、発明の第１形態例に係る樹脂製アームの製造方法を示す断面図である。図５は、発明の第１形態例に係る樹脂製アームの製造方法を示す要部拡大斜視図である。図１ないし図５に示すドアチェック装置は、一端側を車体に取り付けられたブラケット１２に円形断面の取付ピン１３により回動可能に枢着された芯材１と樹脂部２とから成るアーム３と、アーム３の長手方向に沿って摺動可能に嵌合した摺動体４と、から成る。芯材１は、一端側に穴１ｇが穿設され、他端側に角穴１ａが穿設される。ブラケット１２は、アーム３の長手方向と直交する面１２ｄに穿設された穴１２ａにより車体に一体に取り付けられ、アーム３を挟んでアーム３の長手方向と平行な側壁１２ｅ、１２ｆにそれぞれ穿設された穴１２ｂおよび穴１２ｃを有する。樹脂部２は、ブラケット１２の側壁１２ｅ、１２ｆと摺接し車体に回動可能に枢支される取付部２ａと、取付部２ａ中央に形成される取付穴２ｈと、取付部２ａと連接し取付部２ａより薄い直線部２ｂと、長手方向中間部から他端にかけて形成される複数の突部２ｃ、２ｅ、２ｇと、突部２ｃ、２ｅ間に形成される溝部２ｄと、突部２ｅ、２ｇ間に形成される溝部２ｆと、取付穴２ｈから放射線上に延びそれぞれの間の角度が同一になるよう配設される位置決め溝２ｊ、２ｋ、２ｌと、から成る。図４、５に示す穴１ｇ周辺に形成される挟持部１ｃ、１ｄ、１ｆは、位置決め溝２ｊ、２ｋ、２ｌの位置に対応し、樹脂により覆われない部分である。
【００１５】
摺動体４は、摺動ケース１０と、カバー５と、摺動ケース１０に収容された上下一対のクッション部材８、９と、一対のクッション部材８，９の間に配設された上下一対の滑り部材６、７と、を有する。摺動ケース１０およびカバー５は、図示しないねじを穴５ｂ、５ｃに挿通させ、ねじ穴１０ｂ、１０ｃに螺合させることにより一体に固定され、これらは車体に枢支されたドアに固定される。一対の滑り部材６、７は、図３に示すように当節面６ａ、７ａが対向するように組み付けられその間にはアーム３が摺動する空間が形成される。滑り部材６、７はそれぞれの当節面６ａ、７ａがアーム３の外面に当接し、その外面に対して接近又は離隔する方向に移動可能に摺動体ケース１０に収容され、摺動体４の摺動時にアーム３の外面に当接しつつアーム３の長手方向に移動する。クッション部材８、９は、ゴムなどの弾性体から成り、アーム３の外面に当接する滑り部材６、７の当接面６ａ、７ａと反対側の背面６ｂ、７ｂに隣接して位置し、その弾性により滑り部材６、７をアーム３の外面に圧接させる。
【００１６】
アーム３の他端側には、金属製のストッパ部材１１が嵌合する。第１形態例では、三叉状ストッパ部材１１の真中の突部を芯材１の他端側に穿設される角穴１ａに嵌合させることで一体に固定される。以下に第１形態例の作動の詳細を説明する。
【００１７】
ドアが全閉位置にあるとき、摺動体４の滑り部材６、７はアーム３の一端側に位置する。ドアが開き始めるとドアに固定された摺動体ケース１０は、これに収納されたクッション部材８、９および滑り部材６、７と共に、車体に回動可能に枢支されたアーム３に沿ってアーム３の他端側へ移動する。つまり滑り部材６、７の互いに対向した当接面６ａ、７ａが樹脂部２の直線部２ｂに摺接しながら、摺動体４はアーム３に沿って移動する。
【００１８】
ドアが半開位置まで回動すると、摺動体４は樹脂部２の突部２ｃに至る。このとき、突部２ｃは直線部２ｂより外方に突出しているので、一対の滑り部材６、７は突部２ｃにより加圧され、お互いに離間する方向に移動する。このため、弾性体から成る一対のクッション部材８、９は滑り部材６、７を介して押圧され圧縮変形する。このとき、圧縮変形したクッション部材８、９の弾力によって、滑り部材６、７とアーム３との間に摺動体４が直線部２ｂを摺動しているときよりも大きな摩擦抵抗が発生する。すなわち、一対の滑り部材６、７、ひいては摺動体４に摺動体４が直線部２ｂを摺動しているときよりも大きな摩擦抵抗が発生し、ドアの回動抵抗が増大する。このため、ドアの開度を段階的に規制することができる。
【００１９】
ドアに対してさらに回動力を加えていくと、摺動体４は突部２ｃを乗り越えて溝部２ｄに至る。このように、一対の滑り部材６、７は樹脂部２の突部２ｃを乗り越えて溝部２ｄに至る。一対の滑り部材６、７が突部７ｃを離れるとクッション部材８、９は元の状態に弾性復帰し、一対の滑り部材６、７とアーム３との間に摩擦抵抗が減少し、ドアへの回動抵抗も減少する。
【００２０】
ドアに対してさらに回動力を加えていくと、一対の滑り部材６、７は樹脂部２の突部２ｅに至り、突部２ｅを乗り越えて溝部２ｆに至り、突部２ｇに至り、突部２ｇを乗り越えてアーム３の他端側に至る。上述のように一対の滑り部材６、７が突部２ｅおよび突部２ｇに至ったときは、一対の滑り部材６、７とアーム３との間に大きな摩擦抵抗が発生し、ドアの回動抵抗が増大する。また、一対の滑り部材６、７が溝部２ｆおよびアーム３の他端側に至ったときは、一対の滑り部材６、７とアーム３との間の摩擦抵抗が減少し、ドアの回動抵抗も減少する。
【００２１】
摺動体４がアーム３の他端側に達すると、摺動体４は芯材１の他端側に設けられた角穴１ａに嵌合した金属製のストッパ部材１１に当接する。この状態でドアは全開位置になる。ドアを閉じるときは、上述した動作と逆の動作が行われ、摺動体４はアーム３の一端側に戻る。
【００２２】
上述のドアチェック装置において、芯材がインサートされた樹脂製アームの製造方法として、図４、５に示すものがある。まず成形型２００に芯材１を固定する。この際芯材１の回動方向の位置決めとして下型３００のピン３００ａおよびピン３００ｇの外周から位置決め溝２ｊ、２ｋ、２ｌの位置に対応するように放射線状に延びた段付リブの幅狭部３００ｉ、３００ｊ、３００ｋをそれぞれ芯材１の他端側に設けられた角穴１ａおよび芯材１に設けられた穴１ｇに挿嵌すると共に、芯材１の板厚方向の位置決めとして角穴１ａおよび穴１ｇ周縁をそれぞれ下型３００の挟持部３００ｅ、段付リブの幅広部３００ｌ、３００ｍ、３００ｎ上面および上型４００の挟持部４００ａ、ピン４００ｄの外周から位置決め溝２ｊ、２ｋ、２ｌの位置に対応するように放射線状に延びたリブ４００ｅ、４００ｆ、４００ｇ下面により挟持する。この状態で成形型２００に樹脂を流し込む。
【００２３】
尚、上記第１形態例では穴１ｇ周縁に形成される挟持部は１ｃ、１ｄ、１ｆの３箇所であるが、これは最低１箇所以上あればよく、これを狭持するためのピンの外周から延びたリブの数もこれに対応して設ければよい。
【００２４】
（第２形態例）
図６を用いて本発明の第２形態例を説明する。図６は、発明の第２形態例に係る樹脂製アームの要部拡大図である。図６中には、第１形態例に相当する部分に同一符号を付した。この形態例の第１形態例に対する相違点は、芯材１の回転方向及び板厚方向の位置決めとして、芯材１の他端側に穿設された角穴１ａの他に、芯材１に設けられた穴１ｇの周囲に穴１ｇとは別に設けられた穴１ｈ及び穴１ｈの周縁を利用する点である。
【００２５】
これにより、芯材１に樹脂部２と同色のメッキをする必要が無くなるため製品コスト安くすることができる。
【００２６】
【発明の効果】
請求項１ないし請求項３に記載のチェックアームおよびその製造方法によれば、成形型に設けるピンが３箇所で済むため型費を安くすることができ、さらに芯材を成形型に固定するために樹脂部表面に空いてしまう穴が車体側に取り付けられるブラケットにより目立たない取付部に形成されるので、芯材を目立たなくするために樹脂部と同色のメッキをする必要がないため製品コストを安くすることができる。
【００２７】
請求項４に記載のチェックアームの製造方法によれば、芯材を成形型に固定するために樹脂部表面に空いてしまう穴が車体側に取り付けられるブラケットにより目立たない取付部に形成されるので、芯材を目立たなくするために樹脂製アームと同色のメッキをする必要がないため製品コストを安くすることができる。
【図面の簡単な説明】
【図１】発明の第１形態例に係る樹脂製アームを示す斜視図
【図２】図１に示した樹脂製アームの要部拡大図
【図３】本発明に係る摺動体を示す分解斜視図
【図４】発明の第１形態例に係る樹脂製アームの製造方法を示す断面図
【図５】発明の第１形態例に係る樹脂製アームの製造方法を示す要部拡大斜視図
【図６】発明の第２形態例に係る樹脂製アームの要部拡大図
【図７】従来の樹脂製アームを示す斜視図
【図８】従来の樹脂製アームの製造方法を示す断面図
【符号の説明】
１芯材
１ａ角穴
１ｃ、１ｄ、１ｆ狭持部
２樹脂部
２ａ取付部
２ｂ直線部
３アーム
４摺動体
２００成形型
３００下型
３００ａピン
３００ｅ狭持部
３００ｉ、３００ｊ、３００ｋ段付リブの幅狭部
３００ｌ、３００ｍ、３００ｎ段付リブの幅広部
４００上型
４００ａ狭持部
４００ｄピン
４００ｅ、４００ｆ、４００ｇリブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a check arm used in an automobile door check device and a method of manufacturing the same, and more particularly to a resin arm having a core material inserted therein and a method of manufacturing the same with a mold.
[0002]
[Prior art]
A door check device using a resin arm manufactured by insert molding of a core material is shown in FIG. FIG. 7 is a perspective view showing a conventional resin arm. The door check device shown in FIG. 7 is fitted with an arm 3 composed of a core material 1 and a resin part 2 pivotally supported at one end so as to be pivotable on the vehicle body, and slidable along the longitudinal direction of the arm 3. And a sliding body. The resin part 2 is formed with a plurality of protrusions from the middle part in the longitudinal direction to the other end. The sliding body includes a sliding case, a sliding member accommodated in the sliding case, and a cushion member. The sliding member contacts the outer surface of the arm 3 and is accommodated in the sliding body case so as to be movable in a direction approaching or separating from the outer surface. The sliding member is in contact with the outer surface of the arm 3 when the sliding body slides. It moves in the longitudinal direction. The cushion member is located adjacent to the back surface opposite to the contact surface of the sliding member that contacts the outer surface of the arm 3, and is configured from an elastic body that presses the sliding member against the outer surface of the arm 3.
[0003]
When the door is in the fully closed position, the sliding member of the sliding body is positioned on one end side of the arm 3, and the door rotates from the fully closed position to the half-opened position. The cushion member is pressed and compressed and deformed through the sliding member. At this time, a large frictional resistance is generated between the sliding member and the arm 3 due to the elasticity, and a large rotational resistance is applied to the door. In this way, the opening degree of the door can be regulated in stages.
[0004]
When the turning force is further applied to the door, the sliding member gets over the protrusion of the resin portion 2 and reaches the groove portion, the cushion member is elastically restored to the original state, and the friction between the sliding member and the arm 3 is increased. The resistance is reduced and the turning resistance to the door is also reduced. Further, the sliding member reaches the protrusion of the resin part 2, gets over the protrusion, reaches the groove, reaches the protrusion, gets over the protrusion, and reaches the other end of the arm 3. At the same time, the sliding body comes into contact with a stopper member 11 fitted in a square hole 1a provided on the other end side of the core member 1, and in this state, the door is in a fully open position.
[0005]
In the door check device described above, there is a method shown in FIG. 8 as a method for manufacturing a resin arm into which a core material is inserted. FIG. 8 is a cross-sectional view showing a conventional method for manufacturing a resin arm. First, the core material 1 is fixed to the mold 200. At this time, the pin 300a of the lower mold 300 and the small diameter portion 300c of the stepped pin 300b are provided in the square hole 1a and the core material 1 provided on the other end side of the core material 1, respectively, as positioning of the core material 1 in the rotational direction. In addition, the rectangular hole 1a and the peripheral edge of the hole 1b are positioned at the periphery of the lower mold 300, the upper surface of the large diameter part 300d of the stepped pin, and the upper mold 400, respectively. It is clamped by the lower surface of the clamping part 400a and the pin 400b. In this state, resin is poured into the mold 200. The range in which the hole 1b is drilled is such that the resin portion 2 of the arm 3 is in sliding contact with the side walls 12e and 12f of the bracket 12, and is connected to the mounting portion 2a pivotally supported between them. What is necessary is just to be inside the linear part 2b provided and thinner than the attaching part 2a.
[0006]
Therefore, the hole 2i is vacant on the surface of the straight portion 2b (similarly, a similar hole is also formed on the surface opposite to the surface where the hole 2i of the straight portion 2b is vacant). Therefore, conventionally, the core material 1 is plated with the same color as the resin portion 2 so that the holes 2i are not conspicuous.
[0007]
[Problems to be solved by the invention]
In the door check device described above, if the mold 200 includes the pin 300f and the pin 400c for forming the mounting hole 2h in the mounting portion 2a on the one end side of the resin portion 2, it is necessary to provide five pins so that the mold cost is increased. There is a problem of becoming higher. Further, since the core material 1 needs to be plated with the same color as that of the resin portion 2, there is a problem that the product cost is increased.
[0008]
The present invention has been made to solve the above problems, and an object of the present invention is to provide a resin arm having a low mold cost and a low product cost, and a method for manufacturing the same.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a core member having holes formed on one end side and the other end side, and a mounting hole that is mounted on the surface of the core member and coaxial with the hole on one end side of the core member. And a resin portion having at least one protrusion formed from the longitudinal intermediate portion to the other end portion, and with one circular end mounting pin inserted into the hole on the one end side, the one end side , comprising an arm pivotally pivoted to a bracket attached to the vehicle body, a sliding body which is slidably fitted in the arm integrally attached to the door, and steps the opening of the door In the door check device to be controlled, at least one positioning groove extending radially from the mounting hole is provided in the resin portion on one end side of the arm to cover the resin around the hole of the core material. be characterized by the formation of the clamping portion that is not our To provide a check arm.
[0010]
The invention described in claim 2 includes a core member having holes formed on one end side and the other end side, and a mounting hole coaxially mounted on the surface of the core member and coaxially with the hole on one end side of the core member. A resin portion formed with at least one protrusion from the longitudinal intermediate portion to the other end portion thereof, an arm pivotally supported on the vehicle body, and integrally attached to the door. In a door check device that regulates the opening degree of the door stepwise, first, as positioning in the rotational direction for fixing the core material to the mold The lower mold protrusions are inserted into the holes drilled in the one end side and the other end side of the core material, and the peripheral edge of the hole used as the positioning in the rotation direction as the positioning in the plate thickness direction is the upper mold and the lower mold. Check arm that is clamped by the mold clamping part and then poured into the mold To provide a process for the production.
[0011]
According to a third aspect of the present invention, the protrusion provided on the lower mold for positioning in the rotational direction of the hole drilled on one end side of the core member is a stepped rib extending radially from the outer periphery of the pin. The clamping part provided in the lower mold as the positioning in the plate thickness direction of the hole used as the positioning in the rotation direction is the narrow part, and the clamping part provided in the upper mold is the wide part of the stepped rib. The check arm manufacturing method according to claim 2, wherein the check arm is a lower surface of a rib extending radially from an outer periphery of the pin.
[0013]
The invention according to claim 4 includes a core member having holes formed on one end side and the other end side thereof, and a mounting hole that is mounted on the surface of the core member and coaxial with the hole on one end side of the core member. A resin portion formed with at least one protrusion from the longitudinal intermediate portion to the other end portion thereof, an arm pivotally supported on the vehicle body, and integrally attached to the door. In a door check device that regulates the opening degree of the door stepwise, first, as positioning in the rotational direction for fixing the core material to the mold The hole formed on the other end side of the core material and at least one hole different from the hole formed adjacent to the periphery of the hole formed on the one end side of the core material. Periphery of the hole where the projection of the mold was inserted and used as positioning in the rotation direction as positioning in the plate thickness direction Held between the holding portions of the upper mold and the lower mold, then the mold to provide a method of manufacturing a check arm resin is poured.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
The first embodiment of the invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a resin arm according to a first embodiment of the invention. FIG. 2 is an enlarged view of a main part of the resin arm shown in FIG. FIG. 3 is an exploded perspective view showing a sliding body according to the present invention. FIG. 4 is a cross-sectional view showing a method for manufacturing a resin arm according to a first embodiment of the invention. FIG. 5 is an enlarged perspective view of a main part showing a method for manufacturing a resin arm according to a first embodiment of the invention. The door check device shown in FIGS. 1 to 5 has an arm 3 composed of a core 1 and a resin part 2 pivotally attached to a bracket 12 attached to a vehicle body at one end by a mounting pin 13 having a circular cross section. And a sliding body 4 slidably fitted along the longitudinal direction of the arm 3. The core material 1 is provided with a hole 1g on one end side and a square hole 1a on the other end side. The bracket 12 is integrally attached to the vehicle body by a hole 12a drilled in a surface 12d perpendicular to the longitudinal direction of the arm 3, and is drilled in side walls 12e and 12f parallel to the longitudinal direction of the arm 3 with the arm 3 in between. Hole 12b and hole 12c. The resin portion 2 is attached in contact with the side wall 12e and 12f of the bracket 12 and attached to the mounting portion 2a pivotally supported by the vehicle body, the mounting hole 2h formed in the center of the mounting portion 2a, and the mounting portion 2a. A straight portion 2b thinner than the portion 2a, a plurality of protrusions 2c, 2e, 2g formed from the longitudinal intermediate portion to the other end, a groove portion 2d formed between the protrusions 2c, 2e, and the protrusions 2e, 2g A groove portion 2f formed between them and positioning grooves 2j, 2k, and 2l extending from the mounting hole 2h onto the radiation and disposed so as to have the same angle therebetween. The pinching portions 1c, 1d, and 1f formed around the hole 1g shown in FIGS. 4 and 5 correspond to the positions of the positioning grooves 2j, 2k, and 2l, and are portions that are not covered with resin.
[0015]
The sliding body 4 includes a sliding case 10, a cover 5, a pair of upper and lower cushion members 8 and 9 accommodated in the sliding case 10, and a pair of upper and lower cushions disposed between the pair of cushion members 8 and 9. Sliding members 6 and 7. The sliding case 10 and the cover 5 are fixed together by inserting screws (not shown) into the holes 5b and 5c and screwing them into the screw holes 10b and 10c, and these are fixed to a door pivotally supported by the vehicle body. . As shown in FIG. 3, the pair of sliding members 6 and 7 are assembled so that the contact surfaces 6a and 7a face each other, and a space in which the arm 3 slides is formed therebetween. The sliding members 6, 7 are accommodated in the sliding body case 10 so that the respective contact surfaces 6 a, 7 a abut against the outer surface of the arm 3 and move in a direction approaching or separating from the outer surface. It moves in the longitudinal direction of the arm 3 while abutting on the outer surface of the arm 3 when moving. The cushion members 8 and 9 are made of an elastic body such as rubber, and are positioned adjacent to the back surfaces 6b and 7b opposite to the contact surfaces 6a and 7a of the sliding members 6 and 7 that contact the outer surface of the arm 3, The sliding members 6 and 7 are pressed against the outer surface of the arm 3 by elasticity.
[0016]
A metal stopper member 11 is fitted to the other end side of the arm 3. In the first embodiment, the center protrusion of the trident stopper member 11 is fitted into a square hole 1a drilled on the other end side of the core member 1 and fixed integrally. Details of the operation of the first embodiment will be described below.
[0017]
When the door is in the fully closed position, the sliding members 6 and 7 of the sliding body 4 are positioned on one end side of the arm 3. When the door starts to open, the sliding body case 10 fixed to the door is armed along with the cushion members 8 and 9 and the sliding members 6 and 7 housed therein along the arm 3 pivotally supported by the vehicle body. 3 to the other end side. That is, the sliding body 4 moves along the arm 3 while the contact surfaces 6 a and 7 a facing each other of the sliding members 6 and 7 are in sliding contact with the linear portion 2 b of the resin portion 2.
[0018]
When the door rotates to the half-open position, the sliding body 4 reaches the protrusion 2c of the resin portion 2. At this time, since the protruding portion 2c protrudes outward from the straight portion 2b, the pair of sliding members 6 and 7 are pressurized by the protruding portion 2c and move away from each other. For this reason, the pair of cushion members 8 and 9 made of an elastic body are pressed through the sliding members 6 and 7 and are compressed and deformed. At this time, a greater frictional resistance is generated between the sliding members 6 and 7 and the arm 3 than when the sliding body 4 slides on the linear portion 2b due to the elasticity of the cushion members 8 and 9 that are compressed and deformed. That is, a larger frictional resistance is generated in the pair of sliding members 6 and 7 and consequently the sliding body 4 than when the sliding body 4 slides on the linear portion 2b, and the rotational resistance of the door is increased. For this reason, the opening degree of a door can be regulated in steps.
[0019]
When the turning force is further applied to the door, the sliding body 4 gets over the protrusion 2c and reaches the groove 2d. In this way, the pair of sliding members 6 and 7 passes over the protrusion 2c of the resin portion 2 and reaches the groove 2d. When the pair of sliding members 6 and 7 leave the protrusion 7c, the cushion members 8 and 9 are elastically restored to the original state, and the frictional resistance is reduced between the pair of sliding members 6 and 7 and the arm 3 to the door. The rotational resistance of the is also reduced.
[0020]
When the turning force is further applied to the door, the pair of sliding members 6 and 7 reaches the protrusion 2e of the resin part 2, passes over the protrusion 2e, reaches the groove 2f, reaches the protrusion 2g, and protrudes from the protrusion 2e. Get over 2g and reach the other end of arm 3. As described above, when the pair of sliding members 6 and 7 reach the protruding portion 2e and the protruding portion 2g, a large frictional resistance is generated between the pair of sliding members 6 and 7 and the arm 3, and the door is rotated. Resistance increases. Further, when the pair of sliding members 6 and 7 reach the groove 2f and the other end of the arm 3, the frictional resistance between the pair of sliding members 6 and 7 and the arm 3 is reduced, and the door rotation resistance is reduced. Also decreases.
[0021]
When the sliding body 4 reaches the other end side of the arm 3, the sliding body 4 comes into contact with a metal stopper member 11 fitted in a square hole 1 a provided on the other end side of the core member 1. In this state, the door is fully opened. When closing the door, an operation opposite to the above-described operation is performed, and the sliding body 4 returns to one end side of the arm 3.
[0022]
In the door check device described above, there are methods shown in FIGS. 4 and 5 as a method for manufacturing a resin arm into which a core material is inserted. First, the core material 1 is fixed to the mold 200. At this time, as the positioning of the core material 1 in the rotational direction, the narrow portion of the stepped rib that radially extends from the outer periphery of the pins 300a and 300g of the lower mold 300 so as to correspond to the positions of the positioning grooves 2j, 2k, and 2l. 300i, 300j, and 300k are respectively inserted into a square hole 1a provided on the other end side of the core material 1 and a hole 1g provided in the core material 1, and a square hole 1a is used for positioning the core material 1 in the plate thickness direction. And the peripheral edge of the hole 1g from the outer surface of the clamping part 300e of the lower mold 300, the wide parts 300l, 300m, and 300n of the stepped rib and the clamping part 400a of the upper mold 400 and the pin 400d, respectively, to the positions of the positioning grooves 2j, 2k, and 2l. The ribs 400e, 400f, and 400g extending radially so as to correspond are sandwiched between lower surfaces. In this state, resin is poured into the mold 200.
[0023]
In the first embodiment, there are three clamping portions 1c, 1d, and 1f formed on the periphery of the hole 1g. However, it is sufficient that there are at least one clamping portion, and the outer periphery of the pin for pinching it. The number of ribs extending from the plate may be provided correspondingly.
[0024]
(Second embodiment)
A second embodiment of the present invention will be described with reference to FIG. FIG. 6 is an enlarged view of a main part of a resin arm according to a second embodiment of the invention. In FIG. 6, the same reference numerals are given to the portions corresponding to the first embodiment. The difference of this embodiment from the first embodiment is that the core 1 is positioned in the rotational direction and the plate thickness direction of the core 1 in addition to the square hole 1a drilled in the other end of the core 1. The point is that a hole 1h provided around the provided hole 1g and a peripheral edge of the hole 1h are used separately from the hole 1g.
[0025]
Thereby, since it is not necessary to plate the core material 1 with the same color as the resin portion 2, the product cost can be reduced.
[0026]
【The invention's effect】
According to the check arm and the manufacturing method thereof according to claims 1 to 3, the cost for the mold can be reduced because only three pins are provided in the mold, and the core material is fixed to the mold. The hole that is vacant on the surface of the resin part is formed in the inconspicuous mounting part by the bracket attached to the vehicle body side, so it is not necessary to plate the same color as the resin part in order to make the core material inconspicuous, reducing the product cost Can be cheap.
[0027]
According to the check arm method according to claim 4, is formed in the mounting portion a hole would open the resin part surface inconspicuous by a bracket attached to the vehicle body to secure the core member into a mold Therefore, since it is not necessary to plate the same color as the resin arm in order to make the core material inconspicuous, the product cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a resin arm according to a first embodiment of the invention. FIG. 2 is an enlarged view of a main part of the resin arm shown in FIG. 1. FIG. 3 is an exploded perspective view showing a sliding body according to the invention. FIG. 4 is a sectional view showing a method for manufacturing a resin arm according to a first embodiment of the invention. FIG. 5 is an enlarged perspective view of a main part showing a method for manufacturing a resin arm according to the first embodiment of the invention. 6 is an enlarged view of an essential part of a resin arm according to a second embodiment of the invention. FIG. 7 is a perspective view showing a conventional resin arm. FIG. 8 is a cross-sectional view showing a conventional method for manufacturing a resin arm. Explanation】
DESCRIPTION OF SYMBOLS 1 Core material 1a Square hole 1c, 1d, 1f Nipping part 2 Resin part 2a Mounting part 2b Straight part 3 Arm 4 Sliding body 200 Mold 300 Lower mold 300a Pin 300e Nipping part 300i, 300j, 300k Width of stepped rib Narrow part 300l, 300m, 300n Stepped rib wide part 400 Upper mold 400a Nipping part 400d Pin 400e, 400f, 400g Rib

Claims

A core member having holes formed on one end side and the other end side, and a mounting hole formed on the surface of the core member and coaxially with the hole on one end side of the core member. A resin portion having at least one protrusion formed on the other end portion, and a mounting pin having a circular cross section inserted into the hole on the one end side, and the one end side to a bracket attached to the vehicle body An arm pivotally supported and a sliding body integrally attached to the door and slidably fitted to the arm,
In the door check device that regulates the opening degree of the door in stages,
By forming at least one positioning groove extending radially from the mounting hole in the resin part on one end side of the arm, a sandwiching part not covered with resin is formed around the hole of the core member Check arm characterized by

A core member having holes formed on one end side and the other end side, and a mounting hole formed on the surface of the core member and coaxially with the hole on one end side of the core member. A resin part having at least one protrusion formed on the other end part, an arm pivotally supported on the vehicle body, and integrally attached to the door and slidably fitted to the arm A sliding body,
In the door check device that regulates the opening degree of the door in stages,
First, as positioning in the rotational direction for fixing the core material to the mold, lower mold protrusions are inserted into the holes respectively drilled on one end side and the other end side of the core material, and the thickness direction A manufacturing method of a check arm in which a peripheral edge of a hole used for positioning in a rotational direction is clamped by a clamping part of an upper mold and a lower mold, and then a resin is poured into the mold.

The protrusion provided on the lower mold as a positioning in the rotation direction of the hole drilled on one end side of the core material is a narrow portion of a stepped rib extending radially from the outer periphery of the pin. The clamping part provided in the lower mold for positioning in the plate thickness direction of the hole used for positioning in the direction is the wide part of the stepped rib, and the clamping part provided in the upper mold extends radially from the outer periphery of the pin. The method for manufacturing a check arm according to claim 2, wherein the check arm is a lower surface of the provided rib.

A core member having holes formed on one end side and the other end side, and a mounting hole formed on the surface of the core member and coaxially with the hole on one end side of the core member. A resin part having at least one protrusion formed on the other end part, an arm pivotally supported on the vehicle body, and integrally attached to the door and slidably fitted to the arm A sliding body,
In the door check device that regulates the opening degree of the door in stages,
First, as positioning in the rotational direction for fixing the core material to the mold, the hole formed in the other end side of the core material and the hole formed in one end side of the core material The lower mold protrusion is inserted into at least one hole different from the hole formed adjacently, and the peripheral edge of the hole used as the positioning in the rotation direction as the positioning in the plate thickness direction is the upper mold and the lower mold A check arm manufacturing method in which a resin is poured into a molding die.