JP4415534B2

JP4415534B2 - Exercise guidance device

Info

Publication number: JP4415534B2
Application number: JP2002285423A
Authority: JP
Inventors: 廣昭望月; 雄樹藤井; 拓也堀江
Original assignee: THK Co Ltd
Current assignee: THK Co Ltd
Priority date: 2002-09-30
Filing date: 2002-09-30
Publication date: 2010-02-17
Anticipated expiration: 2022-09-30
Also published as: JP2004124957A

Description

【０００１】
【発明の属する技術分野】
本発明は、案内対象の直線運動又は曲線運動を案内する転がり型の運動案内装置に関し、特に軌道部材と移動部材との間の隙間をシールできる運動案内装置に関する。
【０００２】
【従来の技術】
運動案内装置は、平行に伸びる複数条の転動体転走溝が形成された軌道レールと、多数のボール、ローラ等の転動体を介して軌道レールに沿ってスライド可能に組み付けられる鞍状の移動ブロックとを備える。移動ブロックには、軌道レールの転動体転走溝に対向し、且つ平行に伸びる複数条の負荷転動体転走溝が形成される。軌道レールの転動体転走溝と移動ブロックの転動体転走溝との間には、転がり運動する複数の転動体が介在される。
【０００３】
このような運動案内装置は、その普及に伴いさまざまな環境下で使用されるようになった。最近では水溶性クーラントや微細粉が運動案内装置にかかるような過酷な環境での使用が増えてきている。このような過酷環境では、潤滑不足や異物の侵入により、運動案内装置が早期に破損するおそれがある。
【０００４】
このため本出願人は、図８に示すように、内部に充填した潤滑剤の漏れと、外部からの異物の侵入を防止するシール部材を備える運動案内装置を提案している（例えば特許文献１参照）。
【０００５】
シール部材には、移動ブロック３１の下方側面３１ａに取り付けられる外側シール部材３２，３２と、移動ブロック３１の複数条の負荷転動体転動溝３３…間に取り付けられる内側シール部材３４とがある。外側シール部材３２，３２は、移動ブロック３１の下方側面から侵入する異物、水分などを防ぎ、移動ブロック３１の下方から潤滑剤が漏れるのを防ぐ。一方内側シール部材３４は、レール取付穴等より移動ブロック３１内に侵入した異物が移動ブロック３１の負荷転動体転走溝３３…に入らないようにし、潤滑剤を負荷転動体転走溝３３…に保持する。
【０００６】
【特許文献１】
特開平１１−２８０７６０号公報
【０００７】
【発明が解決しようとする課題】
しかしながら、内側シール部材３４と外側シール部材３２，３２とでは、それらが取り付けられる位置が異なり、すなわち外側シール部材３２，３２は、鞍状に形成された移動ブロック３１の下方側面に取り付けられ、一方内側シール部材３４は、移動ブロック３１の中央部の下面と軌道レールの上面との間に取り付けられる。しかも内側シール部材３４と外側シール部材３２，３２とでは、それらが取り付けられるスペースも異なっている。このため、内側シール部材３４と外側シール部材３２，３２とは、それらを移動ブロックに取付け易いように別個独立に設計されていた。このため、内側シール部材３４と外側シール部材３２，３２とは別に金型を製作・修正する必要があり、これらを製造するのにコストと時間がかかっていた。
【０００８】
そこで本発明は、内側シール部材と外側シール部材とを共用できる運動案内装置及びシール部材を提供することを目的とする。
【０００９】
【課題を解決するための手段】
以下、本発明について説明する。上記課題を解決するために本発明者は、内側シール部材及び外側シール部材を、軌道部材の表面と該表面に対向する移動部材の表面との間に配置し、軌道部材の表面と移動部材の表面との間の隙間を内側シール部材と外側シール部材とを共用できるように略等しく設定した。
【００１０】
具体的には本発明は、平行に伸びる複数条の転動体転走部が形成される軌道部材と、前記軌道部材に対して相対的にスライド可能に前記軌道部材に組み付けられ、前記複数条の軌道部材の転動体転走部に対向し、且つ平行に伸びる複数条の負荷転動体転走部が形成される鞍状の移動部材と、前記軌道部材の転動体転走部と前記移動部材の転動体転走部との間に介在される複数の転動体と、前記移動部材における前記軌道部材に対向する内周側で、且つ前記複数条の負荷転動体転走部の間に、前記負荷転動体転走部に沿って取り付けられ、一方の側面で前記負荷転動体転走部に異物が侵入するのを防止すると共に、他方の側面で潤滑剤を前記負荷転動体転走部に保持する内側シール部材と、前記移動部材における前記軌道部材に対向する内周側で、且つ前記複数条の負荷転動体転走部の間よりも外側に、前記負荷転動体転走部に沿って取り付けられ、前記内側シール部材の他方の側面に対応する側面で前記負荷転動体転走部に異物が侵入するのを防止すると共に、前記内側シール部材の一方の側面に対応する側面で潤滑剤を保持する外側シール部材とを備え、前記内側シール部材及び前記外側シール部材は、前記軌道部材の表面と、前記軌道部材の表面と対向し、且つ前記表面に平行な前記移動部材の表面との間に配置され、前記内側シール部材及び前記外側シール部材が配置される、前記軌道部材の表面と前記移動部材の表面との間の隙間は、前記内側シール部材と前記外側シール部材とを共用できるように略等しく形成されており、前記内側シール部材及び前記外側シール部材は、前記移動部材の表面に取り付けられる板状のベース部と、前記軌道部材の表面に接触する断面円弧状に形成されたリップ部とを有し、前記ベース部から前記軌道部材の表面に向かって断面Ｌ字形に折り曲げられて前記ベース部と前記リップ部とを連結する連結部が形成されていることを特徴とする運動案内装置により、上述した課題を解決する。
【００１１】
この発明の好ましい一態様は、前記内側シール部材及び前記外側シール部材は、前記ベース部はその両端部が、前記リップ部が接触する前記軌道部材の表面と直交する方向に折り曲げられ、折り曲げられた前記ベース部の前記両端部で前記移動部材を挟むことによって、前記シール部材が前記移動部材に取り付けられることを特徴とする。
【００１２】
この発明によれば、軌道部材の表面と、該表面と平行な移動部材の表面との間に内側シール部材及び外側シール部材とを配置できる。
【００１３】
さらに本発明の好ましい一態様は、前記連結部が撓むことによって、前記リップ部が前記軌道部材の表面に直交する方向に変位できることを特徴とする。
【００１４】
また、上記課題を解決するために、本発明は、平行に伸びる複数条の転動体転走部が形成される軌道部材と、前記軌道部材に沿って相対的にスライド可能に前記軌道部材に組み付けられ、前記複数条の軌道部材の転動体転走部に対向し、且つ平行に伸びる複数条の負荷転動体転走部が形成される鞍状の移動部材と、前記軌道部材の転動体転走部と前記移動部材の転動体転走部との間に介在される複数の転動体と、前記移動部材における前記軌道部材に対向する内周側で、且つ前記複数条の負荷転動体転走部の間に、前記負荷転動体転走部に沿って取り付けられ、一方の側面で前記負荷転動体転走部に異物が侵入するのを防止すると共に、他方の側面で潤滑剤を前記負荷転動体転走部に保持する内側シール部材と、前記移動部材における前記軌道部材に対向する内周側で、且つ前記複数条の負荷転動体転走部の間よりも外側に、前記負荷転動体転走部に沿って取り付けられ、前記内側シール部材の他方の側面に対応する側面で前記負荷転動体転走部に異物が侵入するのを防止すると共に、前記内側シール部材の一方の側面に対応する側面で潤滑剤を保持する外側シール部材とを備える運動案内装置用のシール部材であって、前記負荷転動体転走部に沿って伸びるシール部材は、前記移動部材の表面に取り付けられる板状のベース部と、前記軌道部材の表面に接触する断面円弧状に形成されたリップ部とを有し、前記ベース部から前記軌道部材の表面に向かって断面Ｌ字形に折り曲げられて前記ベース部と前記リップ部とを連結する連結部が形成され、前記ベース部は前記リップ部が接触する前記軌道部材の表面と直交する方向に折り曲げられ、折り曲げられた前記ベース部の前記両端部で前記移動部材を挟むことによって、前記シール部材が前記移動部材に取り付けられ、前記移動部材における前記軌道部材に対向する内周側で、且つ前記複数条の負荷転動体転走部の間に、前記負荷転動体転走部に沿って取り付けられた場合には、一方の側面で前記負荷転動体転走部に異物が侵入するのを防止すると共に、他方の側面で潤滑剤を前記負荷転動体転走部に保持し、前記移動部材における前記軌道部材に対向する内周側で、且つ前記複数条の負荷転動体転走部の間よりも外側に、前記負荷転動体転走部に沿って取り付けられた場合には、前記他方の側面に対応する側面で前記負荷転動体転走部に異物が侵入するのを防止すると共に、前記一方の側面に対応する側面で潤滑剤を保持し、前記軌道部材と前記移動部材の間の隙間が前記外側シールと前記内側シール部材とが共用できるように等しく形成されていることを特徴とする。
【００１５】
さらに本発明の好ましい一態様は、前記連結部が撓むことによって、前記リップ部が前記軌道部材の表面に直交する方向に変位できることを特徴とする。
【００１６】
この発明によれば、軌道部材の表面と、該表面と平行な移動部材の表面との間に内側シール部材及び外側シール部材とを配置し易くなる。
【００１７】
【発明の実施の形態】
図１は、本発明の第１の実施形態における直線運動案内装置を示す。この直線運動案内装置は、直線状に細長く延びる軌道部材としての軌道レール１と、この軌道レール１に対して相対的にスライド可能に組み付けられる鞍状の移動部材としての移動ブロック２とを備えている。軌道レール１と移動ブロック２との間には、転がり運動可能な多数の転動体としてのローラ３…が介在される。
【００１８】
軌道レール１は、断面略四角形状に形成される。軌道レール１の左右側面には、長手方向に沿って壁面１ｂ，１ｂおよび底面１ｃを有する溝１ａが形成される。溝１ａの両壁面１ｂ，１ｂは９０度の角度で交差する。上側の壁面１ｂおよび下側の壁面１ｂそれぞれが、ローラ３…が転走する転動体転走部としてのローラ転走面とされる。軌道レール１の左右側面には、上下に２条ずつ、合計４条のローラ転走面１ｂ…が形成され、これらローラ転走面１ｂ…は互いに平行に伸びている。
【００１９】
移動ブロック２は、軌道レール１の上面に対向する中央部２ａと、中央部２ａの左右両側から下方に延びて軌道レール１の左右側面に対向する側壁部２ｂ，２ｂとを備え、全体が鞍形状に形成される。この移動ブロック２は、鋼製のブロック本体４と、ブロック本体４に組み込まれる樹脂循環路成形体と、樹脂循環路成形体が組み込まれたブロック本体の移動方向の両端面に装着される一対の側蓋５，５とを備える。ブロック本体４の側壁部４ｂ，４ｂには、軌道レール１の側面に設けた溝１ａに形状を合わせた突出部４ｃ，４ｃが形成される。この突出部４ｃ，４ｃには、ローラ転走面１ｂ，１ｂに対向する負荷転動体転走部としての２条の負荷ローラ転走面４ｄ，４ｄが形成される。負荷ローラ転走面４ｄ，４ｄは、ブロック本体４の左右側壁部４ｂ，４ｂの上下に２条ずつ合計４条設けられ、これら負荷ローラ転走面４ｄ…は互いに平行に伸びる。
【００２０】
移動ブロック２の側壁部２ｂ，２ｂには、上下２条の負荷ローラ転走面４ｄ，４ｄと所定間隔を隔てて平行に設けられる上下２条のローラ逃げ通路７，７と、負荷ローラ転走面４ｄ，４ｄとローラ逃げ通路７，７の両端を接続してローラ３…を循環させるＵ字状の方向転換路が設けられる。これらの負荷ローラ転走面４ｄ、方向転換路、およびローラ逃げ通路７によってローラ循環路が構成される。ローラ逃げ通路７…は、移動ブロック２の左右の側壁部２ｂ，２ｂの上下に２条ずつ合計４条設けられる。方向転換路は、上側の負荷ローラ転走面４ｄと下側のローラ逃げ通路７間、および下側の負荷ローラ転走面４ｄと上側のローラ逃げ通路間７を立体交差するように接続している。ローラ循環路は、左右の側壁部２ｂ，２ｂそれぞれに２つずつ合計４つ形成される。各ローラ循環路は一平面内に形成され、ローラ３…は各ローラ循環路内を２次元的に循環する。また、一方のローラ循環路が位置する平面と他方のローラ循環路が位置する平面とは直交し、一方のローラ循環路は他方のローラ循環路の内周側に配置される。
【００２１】
ローラ３…は、転動体保持帯としてのローラ保持帯１０を介して一連につなげられており、ローラ保持帯１０に保持されつつローラ循環路を循環する。ローラ保持帯１０は、各ローラ３が挿入されるローラ穴が設けられた可撓性のベルトと、ローラ３…とローラ３…との間に介装されるスペーサとを備え、ベルトの側縁部がローラ３…の軸線方向の両端よりも外方に張り出している。
【００２２】
樹脂循環路成形体は、負荷ローラ転走面４ｄ，４ｄの両側縁に沿って延びると共に軌道レール１から移動ブロック２を外した際に負荷ローラ転走面４ｄ，４ｄからのローラ３…の脱落を防止する保持部材１１，１１、ローラ逃げ通路を構成する逃げ通路構成部材１４…、および方向転換路を構成する方向転換路構成部材８…を備える。保持部材１１，１１、逃げ通路構成部材１４…、および方向転換路構成部材８…それぞれは、ブロック本体４とは別体に且つ互いに別体に樹脂で成形され、ブロック本体４に組み込まれる。
【００２３】
逃げ通路構成部材１４…は、パイプを軸線方向と直交する方向に２分割した一対のパイプ半体１４ａ，１４ｂから構成される。これらのパイプ半体１４ａ，１４ｂそれぞれは、長手方向に沿ってローラ３…の形状に合わせた溝と、ベルトの側縁部を案内する案内溝とを備える。
【００２４】
側蓋５は、ブロック本体４と断面形状を合せ、中央部５ａと側壁部５ｂ，５ｂとを備えている。側壁部５ｂ，５ｂには外周側のローラ循環路の外周案内部が形成される。また側壁部５ｂ，５ｂには、方向転換路構成部材８，８が組み込まれる。側蓋５，５は、ブロック本体４の移動方向の両端に取り付けられる。側蓋５，５に形成されたボルト挿入孔にボルトを挿入し、ブロック本体４の端面に形成されたねじ孔にボルトをねじ込むことによって、側蓋５，５がブロック本体４に締め付け固定される。
【００２５】
側蓋５，５の内側には、ブロック本体４の負荷ローラ転走面に潤滑剤を供給するための潤滑剤供給プレート１２，１２が設けられる。
【００２６】
側蓋５，５の外側（すなわち移動ブロックの移動方向の両端面）には、エンドプレート１３，１３が取り付けられる。エンドプレート１３，１３も、ブロック本体４と断面形状を合せ、中央部１３ａと側壁部１３ｂ，１３ｂとを備えている。エンドプレート１３，１３は側蓋５，５にねじを螺合して取付けられている。エンドプレート１３，１３の軌道レール１と対向する内側部の周縁にはシール部１３ｃが設けられている。このエンドプレート１３，１３は、軌道レール１の上面及び側面に付着した異物や水分などが移動ブロック２内に侵入するのを防ぎ、また移動ブロック２の内部の潤滑剤の漏れを塞ぐ。
【００２７】
図２は、エンドプレート１３を取り外した状態の運動案内装置の正面図を示す。移動ブロック２の軌道レール１に対向する内周側で、且つ上側の負荷ローラ転走面４ｄ，４ｄ間（この実施形態では中央部２ａの下側の表面２ｃ）には、負荷ローラ転走面４ｄに沿って伸びる内側シール部材２１が取り付けられる。また、移動ブロック２の軌道レール１に対向する内周側で、且つ下側の負荷ローラ転走面４ｄ，４ｄの間よりも外側（この実施形態では側壁部２ｂの下部）には、負荷ローラ転走面４ｄに沿って伸びる外側シール部材２２が取り付けられる。内側シール部材２１及び外側シール部材２２は、その長手方向の両端が移動ブロック２の両端に取り付けたエンドプレート１３のシール部１３ｃに突き当てられる。
【００２８】
外側シール部材２２は、移動ブロック２の下方側面２ｄから侵入する異物、水分などを防ぎ、移動ブロック２の下方から潤滑剤が漏れるのを防ぐ。外側シール部材２２は例えば運動案内装置を上下逆さにして使用する場合に特に必要になる。内側シール部材２１は、エンドプレート１３で防ぎきれないわずかな異物や粉塵などが移動ブロック２内に侵入した場合（例えば軌道レール１の取付け孔１ｄに異物等が溜まった場合）、異物等が移動ブロック２の負荷ローラ転走面４ｄ…に入らないようにし、潤滑剤を負荷ローラ転走面４ｄ…に保持する。
【００２９】
本実施形態では、これら内側シール部材２１及び外側シール部材２２の構造を同一にし、これら内側シール部材２１及び外側シール部材２２とを共用している。共用化されるシール部材２１，２２は、軌道レール１の表面１ｅと、軌道レール１の表面１ｅと対向し、且つ軌道レール１の表面１ｅに平行な移動ブロック２の表面２ｃとの間に配置される。
【００３０】
図３は共用化されるシール部材２１，２２を示す。図中（Ａ）は正面図を示し、図中（Ｂ）は平面図を示し、図中（Ｃ）はシール部材の長手方向を見た側面図を示す。シール部材２１，２２は、所定形状に形成された金属製の板をプレス等で折り曲げた芯がね２３に、ゴム又はプラスチック製のリップ部２４を接着又は焼きつけて形成される。芯がね２３は樹脂で成形されてもよく、芯がねが樹脂の場合にはリップ部２４は２色成形されてもよい。
【００３１】
芯がね２３には、移動ブロック２の表面２ｃに取り付けられる板状のベース部２５と、ベース部２５から軌道レール１の表面１ｅに向かって断面Ｌ字形に折り曲げられ、ベース部２５とリップ部２４とを連結する連結部２６が形成される。連結部２６が板ばねのように撓むことによって、リップ部２４が軌道レール１の表面１ｅに直交する方向に僅かに変位できるようになっている。ベース部２５の長手方向の両端部は、リップ部２４が接触する軌道レール１の表面１ｅに対して直交する方向に折り曲げられている。移動ブロック２の側壁２ｂには、ベース部２５の両端部２７に対応した凹み２８…（図２参照）が形成されている。側蓋５の凹み２８，２８に折り曲げられた両端部２７，２７を嵌め込み、該両端部２７，２７で移動ブロック２を挟むことによって、シール部材２１，２２が移動ブロック２に取り付けられる。なお側蓋５の凹み２８，２８内に両端部２７，２７が嵌め込まれた状態では、シール部材２１，２２は軌道レール１の表面１ｅに直交する方向にわずかに変位できる。シール部材２１，２２を移動ブロック２に確実に取り付けることができるように、シール部材２１，２２の両端部２７，２７は、側蓋５と側蓋５に取り付けられるエンドプレート１３との間に挟まれる。
【００３２】
軌道レール１の表面１ｅに接触するリップ部２４は、芯がね２３の長手方向の長さと略等しい長さを有し、リップ部２４の長手方向の両端がエンドプレート１３のシール部１３ｃに突き当てられる。リップ部２４の軌道レール１の表面１ｅに接触する部分は、断面円弧状に形成される。リップ部２４は移動ブロック２のスライド方向において軌道レール１に長く接触するため、軌道レール１に接触する圧力を高くすると摺動抵抗が増加する。摺動抵抗を大きくしないためにも、連結部２６が板ばねのように撓むようになっている。
【００３３】
図４はシール部材２１，２２を取り外した状態の直線運動案内装置の正面図を示し、図５はシール部材２１，２２を取り付けた状態の直線運動案内装置の正面図を示す。シール部材２１，２２が配置される、軌道レール１の表面１ｅと移動ブロック２の表面２ｃとの間の隙間は、内側シール部材２１と外側シール部材２２とを共用できるように等しくδに設定される。この隙間δは、内側シール部材２１と外側シール部材２２とを共用できる程度に等しければよく、厳密に一致している必要はない。上述のように、連結部２６が板ばねのように撓むことによってリップ部２４が軌道レール１の表面１ｅに直交する方向に僅かに変位できるようになっているからである。またこの実施形態では、上下２条の負荷ローラ転走面４ｄ，４ｄの間の、軌道レール１の表面１ｅと移動ブロック２の表面２ｃとの間の隙間もδに設定される。これにより、上下２条の負荷ローラ転走面４ｄ，４ｄの間にもシール部材２１，２２を配置することが可能になる。
【００３４】
図６及び図７は本発明の第２の実施形態における直線運動案内装置の正面図を示す。直線運動案内装置はその普及に伴いさまざまな取付け姿勢・環境下で使用される。このため本実施形態では、内側シール部材２１及び外側シール部材２２を、防塵を強化したい箇所に集中的に取り付けている。例えば、左右両側に形成された上側の負荷ローラ転走面４ｄ，４ｄの間に合計６つの内側シール部材２１…を配置し、上下一対の負荷ローラ転走面４ｄ，４ｄの間に２つの内側シール部材２１，２１を配置し、左右両側に形成された下側の負荷ローラ転走面４ｄ，４ｄよりも下側に外側シール部材２２，２２を配置している。また軌道レール１の表面１ｅと移動ブロック２の表面２ｃとの間の隙間は等しく設定され、内側シール部材２１と外側シール部材２２とは共用されている。
【００３５】
内側シール部材２１と外側シール部材２２とを共用することで、負荷ローラ転走面４ｄ以外のどこの場所にもシール部材２１，２２を取り付けることができる。このため本実施形態のように、シール部材２１，２１を２列に並べたダブル仕様、あるいはシール部材２１，２１，２１を３列に並べたトリプル仕様等を容易に製造することができる。
【００３６】
なお、本発明は上記実施形態に限られることはなく、本発明の要旨を変更しない範囲で種々変更可能である。例えば上記実施形態においてローラ転走面１ｂ，１ｂ、負荷ローラ転走面４ｄ，４ｄは、左右に２条ずつ合計４条形成されているが、その条数は直線運動案内装置の種類によって種々に設定することができる。また、転動体としてはローラ３…のみならずボールの適用も可能である。
【００３７】
また、上記実施の形態では、軌道レールが直線状に伸びる直線運動案内装置について説明したが、本発明は軌道レールが曲線状に伸びる曲線運動案内装置に適用することもできる。
【００３８】
【発明の効果】
以上説明したように、本発明によれば、内側シール部材及び外側シール部材を、軌道部材の表面と該表面に対向する移動部材の対向面との間に配置し、内側シール部材及び外側シール部材が配置される、軌道部材の表面と移動部材の対向面との間の隙間を略等しく設定したので、内側シール部材と外側シール部材とを共用できる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態の直線運動案内装置を示す分解斜視図。
【図２】エンドプレートを取り外した状態の直線運動案内装置の正面図。
【図３】共用化されるシール部材を示す図（図中（Ａ）は正面図を示し、図中（Ｂ）は平面図を示し、図中（Ｃ）はシール部材の長手方向を見た側面図を示す）。
【図４】エンドプレート及びシール部材を取り外した状態の直線運動案内装置の正面図。
【図５】シール部材を取り付けた状態の直線運動案内装置の正面図。
【図６】本発明の第２の実施形態における直線運動案内装置の正面図（エンドプレートを取り外した状態）。
【図７】上記図６のVII部拡大図。
【図８】従来の運動案内装置を示す正面図。
【符号の説明】
１…軌道レール
１ｂ…ローラ転走面（転動体転走部）
１ｅ…軌道レールの表面（軌道部材の表面）
２…移動ブロック（移動部材）
２ｃ…移動ブロックの表面（移動部材の表面）
３…ローラ（転動体）
４ｄ…負荷ローラ転走面（負荷転動体転走部）
２１…内側シール部材（シール部材）
２２…外側シール部材（シール部材）
２４…リップ部
２５…ベース部
２６…連結部
２７…両端部
δ…隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rolling motion guide device that guides a linear motion or a curved motion of a guide target, and more particularly to a motion guide device that can seal a gap between a track member and a moving member.
[0002]
[Prior art]
The motion guide device is a track-like movement that is assembled so as to be slidable along the track rail via a plurality of rolling elements such as balls and rollers, and a plurality of rolling element rolling grooves extending in parallel. And a block. The moving block is formed with a plurality of load rolling element rolling grooves extending in parallel to and facing the rolling element rolling grooves of the track rail. Between the rolling element rolling groove of the track rail and the rolling element rolling groove of the moving block, a plurality of rolling elements that make rolling motion are interposed.
[0003]
Such exercise guide devices have come to be used in various environments with the spread. Recently, the use in a harsh environment where water-soluble coolant and fine powder are applied to the motion guide apparatus has been increasing. In such a harsh environment, the motion guide device may be damaged early due to insufficient lubrication or entry of foreign matter.
[0004]
For this reason, as shown in FIG. 8, the applicant of the present application has proposed a motion guide device including a seal member that prevents leakage of a lubricant filled in the interior and intrusion of foreign matter from the outside (for example, Patent Document 1). reference).
[0005]
The seal members include outer seal members 32 and 32 attached to the lower side surface 31 a of the moving block 31 and inner seal members 34 attached between the plurality of load rolling element rolling grooves 33. The outer seal members 32 and 32 prevent foreign matter and moisture entering from the lower side surface of the moving block 31, and prevent the lubricant from leaking from below the moving block 31. On the other hand, the inner seal member 34 prevents the foreign matter that has entered the moving block 31 from the rail mounting holes or the like from entering the load rolling element rolling grooves 33 of the moving block 31, and applies lubricant to the load rolling element rolling grooves 33. Hold on.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-280760
[Problems to be solved by the invention]
However, the positions where the inner seal member 34 and the outer seal members 32 and 32 are attached are different, that is, the outer seal members 32 and 32 are attached to the lower side surface of the moving block 31 formed in a bowl shape. The inner seal member 34 is attached between the lower surface of the central portion of the moving block 31 and the upper surface of the track rail. Moreover, the space in which the inner seal member 34 and the outer seal members 32 and 32 are attached is also different. For this reason, the inner seal member 34 and the outer seal members 32, 32 have been designed separately and independently so that they can be easily attached to the moving block. For this reason, it is necessary to manufacture and modify the mold separately from the inner seal member 34 and the outer seal members 32, 32, and it takes cost and time to manufacture them.
[0008]
Then, an object of this invention is to provide the motion guide apparatus and seal member which can share an inner side seal member and an outer side seal member.
[0009]
[Means for Solving the Problems]
The present invention will be described below. In order to solve the above problems, the present inventor arranges the inner seal member and the outer seal member between the surface of the track member and the surface of the moving member facing the surface, and the surface of the track member and the moving member. The gap between the surfaces was set approximately equal so that the inner seal member and the outer seal member could be shared.
[0010]
Specifically, the present invention comprises a race member formed with a plurality of rolling element rolling portions extending in parallel, and is assembled to the race member so as to be slidable relative to the race member. A saddle-like moving member formed with a plurality of load rolling element rolling parts facing and parallel to the rolling element rolling part of the race member, the rolling element rolling part of the race member and the moving member A plurality of rolling elements interposed between the rolling element rolling sections, and an inner peripheral side of the moving member facing the raceway member and between the plurality of load rolling element rolling sections. mounted rolling along the element rolling part, held together to prevent foreign matter from entering into the loaded rolling member rolling portion at one side, a lubricating agent to said loaded rolling member rolling portion on the other side An inner seal member and an inner peripheral side of the moving member that faces the track member And outside the between loaded rolling member rolling portion of said plural rows, said loaded rolling member rolling portion is mounted along the loaded rolling member rolling on the side corresponding to the other side surface of the inner sealing member An outer seal member that prevents a foreign substance from entering the running portion and holds a lubricant on a side surface corresponding to one side surface of the inner seal member, and the inner seal member and the outer seal member are The track member is disposed between a surface of the track member and a surface of the moving member facing the surface of the track member and parallel to the surface, and the inner seal member and the outer seal member are disposed. The gap between the surface of the movable member and the surface of the moving member is formed to be substantially equal so that the inner seal member and the outer seal member can be shared, and the inner seal member and the outer seal member are And the moving base plate, which is attached to the surface of the member, and a lip portion formed in an arc-shaped cross section in contact with the surface of the raceway member, section toward the surface of the raceway member from the base portion The above-described problem is solved by a motion guide device that is bent into an L shape and has a connecting portion that connects the base portion and the lip portion.
[0011]
One preferred embodiment of this invention, the inner sealing member and the outer sealing member, the front SL base portion has its ends bent in the direction perpendicular to the surface of the track member to which the lip is in contact, are bent Further, the sealing member is attached to the moving member by sandwiching the moving member between the both end portions of the base portion.
[0012]
According to this invention, an inner side sealing member and an outer side sealing member can be arrange | positioned between the surface of a track member and the surface of a moving member parallel to this surface.
[0013]
A further preferred aspect of the present invention, by the connection portion is bent, the lip portion, characterized in that the displaceable in a direction perpendicular to the surface of the track member.
[0014]
Further, in order to solve the above-mentioned problems, the present invention assembles a raceway member in which a plurality of rolling element rolling portions extending in parallel are formed, and the raceway member is slidable relative to the raceway member. A plurality of loaded rolling element rolling portions facing the rolling element rolling portions of the plurality of raceway members and extending in parallel, and a rolling member rolling of the raceway members. A plurality of rolling elements that are interposed between a rolling part and a rolling element rolling part of the moving member, and an inner peripheral side of the moving member that faces the track member, and the plurality of load rolling element rolling parts. Is attached along the rolling element rolling part, and prevents foreign matter from entering the rolling element rolling part on one side, and the lubricant on the other side. An inner seal member held in the rolling part, and the gauge in the moving member. It is attached along the load rolling element rolling part on the inner peripheral side facing the member and outside the space between the plurality of load rolling element rolling parts, and corresponds to the other side surface of the inner seal member And an outer seal member for holding a lubricant on a side surface corresponding to one side surface of the inner seal member . The seal member, which extends along the load rolling element rolling portion, is formed in a plate-like base portion attached to the surface of the moving member and a circular arc shape in contact with the surface of the track member. And a connecting portion that connects the base portion and the lip portion is formed by bending the base portion toward the surface of the raceway member to form an L-shaped cross section. Part is touching The seal member is attached to the moving member by being bent in a direction perpendicular to the surface of the track member, and sandwiching the moving member between the both ends of the bent base portion, and the track in the moving member When mounted along the load rolling element rolling part on the inner peripheral side facing the member and between the plurality of load rolling element rolling parts, the load rolling element rolling is provided on one side surface. In addition to preventing foreign matter from entering the running portion, the lubricant is held on the loaded rolling element rolling portion on the other side surface, on the inner peripheral side of the moving member facing the track member, and the plurality of strips. When attached along the load rolling element rolling part outside the load rolling element rolling part, foreign matter is present in the load rolling element rolling part on the side surface corresponding to the other side surface. To prevent intrusion Further, the lubricant is held on the side surface corresponding to the one side surface, and the gap between the track member and the moving member is formed equally so that the outer seal and the inner seal member can be shared. Features.
[0015]
A further preferred aspect of the present invention, by the connection portion is bent, the lip portion, characterized in that the displaceable in a direction perpendicular to the surface of the track member.
[0016]
According to this invention, it becomes easy to arrange | position an inner side sealing member and an outer side sealing member between the surface of a track member and the surface of a moving member parallel to this surface.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a linear motion guide apparatus according to a first embodiment of the present invention. This linear motion guide apparatus includes a track rail 1 as a track member extending in a straight line and a moving block 2 as a bowl-shaped moving member assembled so as to be slidable relative to the track rail 1. Yes. Between the track rail 1 and the moving block 2, a large number of rollers 3 as rolling elements capable of rolling motion are interposed.
[0018]
The track rail 1 is formed in a substantially square cross section. On the left and right side surfaces of the track rail 1, grooves 1a having wall surfaces 1b, 1b and a bottom surface 1c are formed along the longitudinal direction. Both wall surfaces 1b and 1b of the groove 1a intersect at an angle of 90 degrees. Each of the upper wall surface 1b and the lower wall surface 1b is a roller rolling surface as a rolling element rolling portion on which the rollers 3 roll. On the left and right side surfaces of the track rail 1, a total of four roller rolling surfaces 1b are formed, two on the top and the bottom, and these roller rolling surfaces 1b extend in parallel with each other.
[0019]
The moving block 2 includes a central portion 2a facing the upper surface of the track rail 1 and side wall portions 2b and 2b extending downward from both the left and right sides of the central portion 2a and facing the left and right side surfaces of the track rail 1, and are entirely It is formed into a shape. The moving block 2 includes a pair of steel block main bodies 4, a resin circulation path molded body incorporated in the block main body 4, and a pair of end faces in the moving direction of the block main body in which the resin circulation path molded bodies are incorporated. Side lids 5 and 5 are provided. On the side wall portions 4b and 4b of the block main body 4, projecting portions 4c and 4c having shapes matched to the grooves 1a provided on the side surface of the track rail 1 are formed. Two protruding roller rolling surfaces 4d and 4d are formed on the protruding portions 4c and 4c as load rolling element rolling portions facing the roller rolling surfaces 1b and 1b. The load roller rolling surfaces 4d, 4d are provided in total on the top and bottom of the left and right side wall portions 4b, 4b of the block body 4 in a total of four, and the load roller rolling surfaces 4d ... extend in parallel with each other.
[0020]
The side walls 2b and 2b of the moving block 2 are provided with two upper and lower roller escape passages 7 and 7 provided parallel to the two upper and lower load roller rolling surfaces 4d and 4d at a predetermined interval, and the load roller rolling. A U-shaped direction changing path for circulating the rollers 3 by connecting both ends of the surfaces 4d, 4d and the roller escape passages 7, 7 is provided. These load roller rolling surfaces 4d, the direction changing path, and the roller escape path 7 constitute a roller circulation path. A total of four roller escape passages 7 are provided above and below the left and right side wall portions 2b, 2b of the moving block 2, respectively. The direction change path connects the upper load roller rolling surface 4d and the lower roller escape passage 7 and the lower load roller rolling surface 4d and the upper roller escape passage 7 so as to cross three-dimensionally. Yes. A total of four roller circulation paths are formed on each of the left and right side wall portions 2b, 2b. Each roller circulation path is formed in one plane, and the rollers 3 circulate two-dimensionally in each roller circulation path. Further, the plane on which one roller circulation path is located and the plane on which the other roller circulation path is located are orthogonal to each other, and one roller circulation path is disposed on the inner peripheral side of the other roller circulation path.
[0021]
The rollers 3 are connected in series through a roller holding band 10 as a rolling element holding band, and circulate in the roller circulation path while being held by the roller holding band 10. The roller holding band 10 includes a flexible belt provided with a roller hole into which each roller 3 is inserted, and a spacer interposed between the roller 3... And the roller 3. The part protrudes outward from both ends in the axial direction of the rollers 3.
[0022]
The resin circulation path molded body extends along both side edges of the load roller rolling surfaces 4d, 4d, and when the moving block 2 is removed from the track rail 1, the rollers 3 ... drop off from the load roller rolling surfaces 4d, 4d. Holding members 11 and 11, escape passage constituting members 14 constituting roller escape passages, and direction changing path constituting members 8 constituting direction changing paths. The holding members 11, 11, the escape passage constituting member 14, and the direction changing path constituting member 8 are each molded separately from the block body 4 and separately from each other, and are incorporated into the block body 4.
[0023]
The escape passage constituting member 14 is composed of a pair of pipe halves 14a and 14b obtained by dividing a pipe into two in a direction orthogonal to the axial direction. Each of these pipe halves 14a and 14b includes a groove that matches the shape of the rollers 3 along the longitudinal direction, and a guide groove that guides the side edge of the belt.
[0024]
The side cover 5 has a cross-sectional shape that matches that of the block body 4 and includes a central portion 5a and side wall portions 5b and 5b. The side wall portions 5b and 5b are formed with outer peripheral guide portions of the roller circulation path on the outer peripheral side. Moreover, the direction change path structure members 8 and 8 are integrated in the side wall parts 5b and 5b. The side lids 5 and 5 are attached to both ends of the block body 4 in the moving direction. The side lids 5 and 5 are fastened and fixed to the block body 4 by inserting bolts into the bolt insertion holes formed in the side lids 5 and 5 and screwing the bolts into the screw holes formed on the end surface of the block body 4. .
[0025]
Lubricant supply plates 12 and 12 for supplying the lubricant to the load roller rolling surface of the block body 4 are provided inside the side lids 5 and 5.
[0026]
End plates 13 and 13 are attached to the outside of the side lids 5 and 5 (that is, both end surfaces in the moving direction of the moving block). The end plates 13 and 13 are also provided with a central portion 13a and side wall portions 13b and 13b in accordance with the cross-sectional shape of the block body 4. The end plates 13 and 13 are attached to the side lids 5 and 5 by screws. A seal portion 13c is provided at the periphery of the inner portion of the end plates 13, 13 that faces the track rail 1. The end plates 13, 13 prevent foreign matter or moisture adhering to the upper and side surfaces of the track rail 1 from entering the moving block 2 and block the leakage of the lubricant inside the moving block 2.
[0027]
FIG. 2 shows a front view of the motion guide apparatus with the end plate 13 removed. On the inner peripheral side of the moving block 2 facing the track rail 1 and between the upper load roller rolling surfaces 4d and 4d (in this embodiment, the lower surface 2c of the central portion 2a), the load roller rolling surface is provided. An inner seal member 21 extending along 4d is attached. Further, on the inner peripheral side of the moving block 2 facing the track rail 1 and on the outer side between the lower load roller rolling surfaces 4d and 4d (in this embodiment, below the side wall portion 2b), the load roller An outer seal member 22 extending along the rolling surface 4d is attached. Both ends of the inner seal member 21 and the outer seal member 22 are abutted against the seal portions 13c of the end plate 13 attached to both ends of the moving block 2.
[0028]
The outer seal member 22 prevents foreign matter, moisture, and the like entering from the lower side surface 2d of the moving block 2 and prevents the lubricant from leaking from below the moving block 2. The outer seal member 22 is particularly necessary when, for example, the motion guide device is used upside down. The inner seal member 21 moves when a small amount of foreign matter or dust that cannot be prevented by the end plate 13 has entered the moving block 2 (for example, when foreign matter has accumulated in the mounting hole 1d of the track rail 1). The load roller rolling surface 4d of the block 2 is prevented from entering, and the lubricant is held on the load roller rolling surface 4d.
[0029]
In the present embodiment, the inner seal member 21 and the outer seal member 22 have the same structure, and the inner seal member 21 and the outer seal member 22 are shared. The shared seal members 21 and 22 are disposed between the surface 1e of the track rail 1 and the surface 2c of the moving block 2 facing the surface 1e of the track rail 1 and parallel to the surface 1e of the track rail 1. Is done.
[0030]
FIG. 3 shows seal members 21 and 22 to be shared. (A) in the figure shows a front view, (B) in the figure shows a plan view, and (C) in the figure shows a side view of the longitudinal direction of the seal member. The sealing members 21 and 22 are formed by bonding or baking a rubber or plastic lip portion 24 to a core glass 23 formed by bending a metal plate formed in a predetermined shape with a press or the like. The core 23 may be molded from resin, and when the core is resin, the lip portion 24 may be molded in two colors.
[0031]
The core rod 23 has a plate-like base portion 25 attached to the surface 2c of the moving block 2, and is bent into an L-shaped cross section from the base portion 25 toward the surface 1e of the track rail 1, and the base portion 25 and the lip portion. 24 is formed. By bending the connecting portion 26 like a leaf spring, the lip portion 24 can be slightly displaced in a direction perpendicular to the surface 1 e of the track rail 1. Both ends in the longitudinal direction of the base portion 25 are bent in a direction perpendicular to the surface 1e of the track rail 1 with which the lip portion 24 contacts. Recesses 28 (see FIG. 2) corresponding to both end portions 27 of the base portion 25 are formed on the side wall 2b of the moving block 2. The sealing members 21 and 22 are attached to the moving block 2 by fitting the bent ends 27 and 27 into the recesses 28 and 28 of the side lid 5 and sandwiching the moving block 2 between the both ends 27 and 27. In the state where both end portions 27 are fitted in the recesses 28 of the side cover 5, the seal members 21 and 22 can be slightly displaced in the direction perpendicular to the surface 1 e of the track rail 1. Both end portions 27 and 27 of the seal members 21 and 22 are sandwiched between the side lid 5 and the end plate 13 attached to the side lid 5 so that the seal members 21 and 22 can be securely attached to the moving block 2. It is.
[0032]
The lip portion 24 that contacts the surface 1e of the track rail 1 has a length substantially equal to the length in the longitudinal direction of the core rod 23, and both ends in the longitudinal direction of the lip portion 24 project against the seal portion 13c of the end plate 13. Hit. A portion of the lip portion 24 that contacts the surface 1e of the track rail 1 is formed in an arc shape in cross section. Since the lip portion 24 makes long contact with the track rail 1 in the sliding direction of the moving block 2, the sliding resistance increases when the pressure in contact with the track rail 1 is increased. In order not to increase the sliding resistance, the connecting portion 26 bends like a leaf spring.
[0033]
4 shows a front view of the linear motion guide apparatus with the seal members 21 and 22 removed, and FIG. 5 shows a front view of the linear motion guide apparatus with the seal members 21 and 22 attached. The clearance between the surface 1e of the track rail 1 and the surface 2c of the moving block 2 where the seal members 21 and 22 are disposed is set equal to δ so that the inner seal member 21 and the outer seal member 22 can be shared. The The gap δ only needs to be equal to the extent that the inner seal member 21 and the outer seal member 22 can be shared, and does not need to be exactly the same. This is because the lip portion 24 can be slightly displaced in the direction perpendicular to the surface 1e of the track rail 1 by bending the connecting portion 26 like a leaf spring as described above. In this embodiment, the gap between the surface 1e of the track rail 1 and the surface 2c of the moving block 2 between the upper and lower two load roller rolling surfaces 4d, 4d is also set to δ. Thereby, it becomes possible to arrange the sealing members 21 and 22 between the upper and lower two load roller rolling surfaces 4d and 4d.
[0034]
6 and 7 are front views of the linear motion guide apparatus according to the second embodiment of the present invention. Linear motion guide devices are used in various mounting postures and environments as they become popular. For this reason, in this embodiment, the inner side sealing member 21 and the outer side sealing member 22 are concentratedly attached to the location which wants to strengthen dust prevention. For example, a total of six inner seal members 21 are disposed between the upper load roller rolling surfaces 4d and 4d formed on the left and right sides, and two inner surfaces are disposed between the pair of upper and lower load roller rolling surfaces 4d and 4d. Seal members 21 and 21 are arranged, and outer seal members 22 and 22 are arranged below lower load roller rolling surfaces 4d and 4d formed on both the left and right sides. Moreover, the clearance gap between the surface 1e of the track rail 1 and the surface 2c of the moving block 2 is set equally, and the inner side sealing member 21 and the outer side sealing member 22 are shared.
[0035]
By using the inner seal member 21 and the outer seal member 22 in common, the seal members 21 and 22 can be attached anywhere except the load roller rolling surface 4d. Therefore, as in the present embodiment, a double specification in which the seal members 21, 21 are arranged in two rows, or a triple specification in which the seal members 21, 21, 21 are arranged in three rows can be easily manufactured.
[0036]
In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not change the summary of this invention. For example, in the above embodiment, the roller rolling surfaces 1b and 1b and the load roller rolling surfaces 4d and 4d are formed in a total of four strips, two on the left and right, but the number of strips varies depending on the type of linear motion guide device. Can be set. Further, not only the rollers 3 but also balls can be used as the rolling elements.
[0037]
In the above embodiment, the linear motion guide device in which the track rail extends linearly has been described, but the present invention can also be applied to a curved motion guide device in which the track rail extends in a curved shape.
[0038]
【The invention's effect】
As described above, according to the present invention, the inner seal member and the outer seal member are disposed between the surface of the track member and the opposed surface of the moving member facing the surface, and the inner seal member and the outer seal member are arranged. Since the gap between the surface of the track member and the opposed surface of the moving member is set to be approximately equal, the inner seal member and the outer seal member can be shared.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a linear motion guide apparatus according to a first embodiment of the present invention.
FIG. 2 is a front view of the linear motion guide apparatus with an end plate removed.
3A and 3B are diagrams showing a common seal member (A in the figure shows a front view, B in the figure shows a plan view, and C in the figure shows the longitudinal direction of the seal member. Shows a side view).
FIG. 4 is a front view of the linear motion guide device with an end plate and a seal member removed.
FIG. 5 is a front view of the linear motion guide device with a seal member attached.
FIG. 6 is a front view of a linear motion guide apparatus according to a second embodiment of the present invention (with an end plate removed).
7 is an enlarged view of a portion VII in FIG.
FIG. 8 is a front view showing a conventional motion guide device.
[Explanation of symbols]
1 ... Rail rail 1b ... Roller rolling surface (rolling element rolling part)
1e ... Track rail surface (surface of track member)
2 ... Moving block (moving member)
2c ... surface of moving block (surface of moving member)
3. Roller (rolling element)
4d: Load roller rolling surface (load rolling element rolling part)
21 ... Inner seal member (seal member)
22 ... Outer seal member (seal member)
24 ... Lip part 25 ... Base part 26 ... Connection part 27 ... Both ends delta ... Gap

Claims

A track member in which a plurality of rolling element rolling parts extending in parallel are formed,
A plurality of load rolling element rolling portions are formed which are assembled to the race member so as to be slidable relative to the race member, face the rolling element rolling portions of the plurality of race members and extend in parallel. A bowl-shaped moving member to be
A plurality of rolling elements interposed between the rolling element rolling part of the track member and the rolling element rolling part of the moving member;
The moving member is attached along the load rolling element rolling part on the inner peripheral side of the moving member facing the raceway member and between the plurality of load rolling element rolling parts. An inner seal member for preventing foreign matter from entering the moving body rolling part and holding the lubricant on the other side of the rolling element rolling part,
The inner seal member is attached along the load rolling element rolling portion on the inner peripheral side of the moving member facing the raceway member and outside the space between the plurality of load rolling element rolling portions. An outer seal member that prevents a foreign substance from entering the load rolling element rolling portion at a side surface corresponding to the other side surface of the inner seal member and holds a lubricant at a side surface corresponding to the one side surface of the inner seal member. Prepared,
The inner seal member and the outer seal member are disposed between the surface of the track member and the surface of the moving member facing the surface of the track member and parallel to the surface,
The clearance between the surface of the raceway member and the surface of the moving member where the inner seal member and the outer seal member are disposed is formed substantially equal so that the inner seal member and the outer seal member can be shared. Has been
The inner seal member and the outer seal member are plate-like base parts attached to the surface of the moving member;
A lip portion formed in a circular arc shape in contact with the surface of the raceway member,
A motion guide device, wherein a connecting portion that is bent in an L-shaped cross section from the base portion toward the surface of the track member and connects the base portion and the lip portion is formed.

The inner seal member and the outer seal member are
Both ends of the base portion are bent in a direction perpendicular to the surface of the track member with which the lip portion contacts,
The motion guide apparatus according to claim 1, wherein the seal member is attached to the moving member by sandwiching the moving member between the both ends of the bent base portion.

The motion guide device according to claim 1, wherein the lip portion can be displaced in a direction perpendicular to the surface of the track member by bending the connecting portion.

A race member in which a plurality of rolling element rolling portions extending in parallel are formed, and a rolling member rolling portion of the plurality of race members assembled to the race member so as to be relatively slidable along the race member. Between the rolling member rolling part of the track member and the rolling member rolling part of the moving member, and a plurality of load rolling element rolling parts extending in parallel to each other and formed in parallel A plurality of rolling elements interposed between,
The moving member is attached along the load rolling element rolling part on the inner peripheral side of the moving member facing the raceway member and between the plurality of load rolling element rolling parts. An inner seal member for preventing foreign matter from entering the moving body rolling part and holding the lubricant on the other side of the rolling element rolling part,
The inner seal member is attached along the load rolling element rolling portion on the inner peripheral side of the moving member facing the raceway member and outside the space between the plurality of load rolling element rolling portions. An outer seal member that prevents a foreign substance from entering the load rolling element rolling portion at a side surface corresponding to the other side surface of the inner seal member and holds a lubricant at a side surface corresponding to the one side surface of the inner seal member. A seal member for a motion guide device comprising:
The seal member extending along the load rolling element rolling part,
A plate-like base portion attached to the surface of the moving member;
A lip portion formed in a circular arc shape in contact with the surface of the raceway member,
A connecting portion that is bent in an L-shaped section from the base portion toward the surface of the race member and connects the base portion and the lip portion is formed.
The base portion is bent in a direction perpendicular to the surface of the raceway member with which the lip portion contacts,
The sealing member is attached to the moving member by sandwiching the moving member at both ends of the bent base portion,
When the moving member is attached along the load rolling element rolling part on the inner peripheral side facing the track member and between the plurality of load rolling element rolling parts, one side surface is provided. And preventing foreign matter from entering the loaded rolling element rolling part, and holding the lubricant on the loaded rolling element rolling part on the other side,
In the case of being attached along the load rolling element rolling part on the inner peripheral side facing the track member in the moving member and outside the space between the plurality of load rolling element rolling parts, While preventing a foreign matter from entering the load rolling element rolling portion at the side surface corresponding to the other side surface, holding the lubricant at the side surface corresponding to the one side surface ,
A gap member between the track member and the moving member is formed to be equal so that the outer seal and the inner seal member can be shared .

The seal member for a motion guide device according to claim 4, wherein the lip portion can be displaced in a direction orthogonal to the surface of the track member by bending the connecting portion.