JP2008057755A - Direct-acting guide device - Google Patents

Direct-acting guide device Download PDF

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JP2008057755A
JP2008057755A JP2006238957A JP2006238957A JP2008057755A JP 2008057755 A JP2008057755 A JP 2008057755A JP 2006238957 A JP2006238957 A JP 2006238957A JP 2006238957 A JP2006238957 A JP 2006238957A JP 2008057755 A JP2008057755 A JP 2008057755A
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Prior art keywords
rolling element
inner seal
slider
seal member
rail
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JP2006238957A
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JP4622971B2 (en
Inventor
Uei Jo
▲うぇい▼ 徐
Yoshinori Mizumura
美典 水村
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NSK Ltd
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NSK Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/08—Arrangements for covering or protecting the ways
    • F16C29/084—Arrangements for covering or protecting the ways fixed to the carriage or bearing body movable along the guide rail or track
    • F16C29/088—Seals extending in the longitudinal direction of the carriage or bearing body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0604—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section
    • F16C29/0607—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section of parts or members for retaining the rolling elements, i.e. members to prevent the rolling elements from falling out of the bearing body or carriage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
    • F16C29/0642—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls
    • F16C29/0647—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls with load directions in X-arrangement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Sealing Of Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a direct-acting guide device capable of preventing damage from occurring to a lip part of an inner seal member which dversely affecting sealing performance. <P>SOLUTION: An inner seal support groove for supporting an inner seal member 14 between the top surface part 1c of a guide rail 1 and the undersurface part 5c of a slider body 5 is installed on a pair of left and right rolling element retainers 15 assembled in the slider body 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、往復直線運動する物体をその移動方向に案内する直動案内装置に関する。   The present invention relates to a linear motion guide device that guides an object that reciprocates linearly in its moving direction.

往復直線運動する物体をその移動方向に案内する直動案内装置は、一般に、直線状に形成された案内レールと、この案内レールの長手方向に相対移動するスライダと、このスライダ内に転動自在に組み込まれた多数の転動体とからなり、スライダは、案内レールの左右側面部に形成された複数のレール側転動体軌道溝と対向する複数のスライダ側転動体軌道溝を有するスライダ本体と、このスライダ本体の一端と他端に装着された前後一対のエンドキャップとを備えた構成となっている。   A linear motion guide device that guides a reciprocating linearly moving object in its moving direction is generally a linearly formed guide rail, a slider that moves relative to the longitudinal direction of the guide rail, and can freely roll into the slider. A slider body having a plurality of slider-side rolling element raceway grooves opposed to a plurality of rail-side rolling element raceway grooves formed on the left and right side surfaces of the guide rail; The slider body includes a pair of front and rear end caps attached to one end and the other end of the slider body.

このような直動案内装置のレール側転動体軌道溝やスライダ側転動体軌道溝に切削粉などの異物が侵入すると、レール側転動体軌道溝やスライダ側転動体軌道溝の溝面に圧痕が生じたり、転動体の転がり運動が阻害されたりすることがある。そこで、案内レールの左右側面部と該左右側面部に対向するスライダ本体の内面部との間をスライダ本体の内側からシールするインナーシールとして、合成樹脂材からなるプレート状のインナーシール部材を用いたものが考案されている（例えば、特許文献１参照）。
特開２００３−２５４３２９号公報 When foreign matter such as cutting powder enters the rail-side rolling element raceway groove or slider-side rolling element raceway groove of such a linear motion guide device, indentations are formed on the rail-side rolling element raceway groove or slider-side rolling element raceway groove surface. May occur or the rolling motion of the rolling element may be inhibited. Therefore, a plate-like inner seal member made of a synthetic resin material was used as an inner seal that seals between the left and right side portions of the guide rail and the inner surface portion of the slider body facing the left and right side portions from the inside of the slider body. A device has been devised (for example, see Patent Document 1).
JP 2003-254329 A

このような直動案内装置では、切削粉などの異物が案内レールの左右側面部とスライダ本体の内面部との間にスライダ本体の内側から侵入することをインナーシール部材によって防止できるが、次のような問題点を有していた。すなわち、上述した直動案内装置では、前後一対のエンドキャップにインナーシール支持溝を形成し、これらのインナーシール支持溝にインナーシール部材の前端部と後端部を差し込んでインナーシール部材を案内レールの上面部とスライダ本体の下面部との間に支持している。このため、インナーシール部材の前端部と後端部との間の中央部分に撓みが生じ易くなり、スライダを案内レールに組み付ける際にインナーシール部材の中央部分が案内レールの端面部と干渉することによって、シール性能に悪影響を及ぼす損傷がインナーシール部材のリップ部に生じるおそれがあった。   In such a linear motion guide device, the inner seal member can prevent foreign matter such as cutting powder from entering from the inside of the slider body between the left and right side surfaces of the guide rail and the inner surface of the slider body. It had the following problems. That is, in the linear motion guide device described above, the inner seal support grooves are formed in the pair of front and rear end caps, and the front end portion and the rear end portion of the inner seal member are inserted into these inner seal support grooves to guide the inner seal member to the guide rail. Between the upper surface portion of the slider and the lower surface portion of the slider body. For this reason, the central portion between the front end portion and the rear end portion of the inner seal member is likely to be bent, and the central portion of the inner seal member interferes with the end surface portion of the guide rail when the slider is assembled to the guide rail. As a result, damage that adversely affects the sealing performance may occur in the lip portion of the inner seal member.

なお、上記の不具合を防止する方策としては、インナーシール部材として例えば特開平９−５３６３９号公報の図４に示されたものを用いることが考えられるが、同公報に開示されたインナーシール部材はプレート状に形成された芯金と、この芯金の下面部に加硫接着された一対のシールリップとから形成されているため、コスト高を招くという問題がある。   As a measure for preventing the above problems, for example, the inner seal member shown in FIG. 4 of JP-A-9-53639 may be used. Since it is formed from a cored bar formed in a plate shape and a pair of seal lips that are vulcanized and bonded to the lower surface of the cored bar, there is a problem of increasing costs.

また、他の方策としては、特開２００２−３９１７４号公報に開示されているように、インナーシール部材を転動体保持器と一体に樹脂成形することが考えられるが、この場合には、転動体保持器がスライダ本体と一体にインサート成形されているため、インナーシール部材を取り外して摩擦軽減を図ることができなくなるという問題がある。
本発明は上述した問題点に着目してなされたものであり、その目的は、シール性能に悪影響を及ぼす損傷がインナーシール部材のリップ部に発生することを防止することのできる直動案内装置を提供することにある。 Further, as another measure, as disclosed in Japanese Patent Application Laid-Open No. 2002-39174, it is conceivable to mold the inner seal member integrally with the rolling element holder, but in this case, the rolling element Since the cage is insert-molded integrally with the slider body, there is a problem that it becomes impossible to reduce friction by removing the inner seal member.
The present invention has been made paying attention to the above-mentioned problems, and its purpose is to provide a linear motion guide device capable of preventing damage that adversely affects sealing performance from occurring in the lip portion of the inner seal member. It is to provide.

上記の目的を達成するために、本発明は、案内レールの長手方向に相対移動するスライダが前記案内レールの左右側面部に形成されたレール側転動体軌道溝と各々対向する複数のスライダ側転動体軌道溝を有するスライダ本体と、該スライダ本体の一端と他端に装着された前後一対のエンドキャップと、前記案内レールの左右側面部と該左右側面部に対向するスライダ本体の内面部との間を前記スライダ本体の内側からシールするプレート状のインナーシール部材と、前記スライダ本体に組み付けられた左右一対の転動体保持器とを備えてなる直動案内装置において、前記インナーシール部材を前記案内レールの上面部と該上面部に対向するスライダ本体の下面部との間に支持するインナーシール支持部を前記左右一対の転動体保持器に設けたことを特徴とする。   In order to achieve the above object, according to the present invention, there is provided a plurality of slider-side rolling elements in which a slider that relatively moves in the longitudinal direction of a guide rail is opposed to rail-side rolling element raceway grooves formed on left and right side surfaces of the guide rail. A slider body having a moving body raceway groove, a pair of front and rear end caps attached to one end and the other end of the slider body, left and right side portions of the guide rail, and an inner surface portion of the slider body facing the left and right side portions. A linear motion guide device comprising: a plate-shaped inner seal member that seals a gap from the inside of the slider main body; and a pair of left and right rolling element holders assembled to the slider main body. The pair of left and right rolling element holders is provided with an inner seal support portion that supports between the upper surface portion of the rail and the lower surface portion of the slider body facing the upper surface portion. It is characterized in.

本発明に係る直動案内装置において、転動体保持器は合成樹脂材からなり、かつスライダ本体の端面部に当接する二つのプレート部を有するとともに、案内レールの左右側面部に二条ずつ形成されたレール側転動体軌道溝のうち上側のレール側転動体軌道溝と該転動体軌道溝に対向するスライダ側転動体軌道溝との間の転動体を保持する第１の転動体保持部と、案内レールの左右側面部に二条ずつ形成されたレール側転動体軌道溝のうち下側のレール側転動体軌道溝と該転動体軌道溝に対向するスライダ側転動体軌道溝との間の転動体を保持する第２の転動体保持部と、第１の転動体保持部と第２の転動体保持部との間に形成された第３の転動体保持部とを有するものを用いることができる。この場合、インナーシール支持部は転動体保持器の第１の転動体保持部に設けられることが好ましい。
また、インナーシール部材はインナーシール支持部に係合する突起部もしくは溝部を左右側端部に有するものであってもよい。また、インナーシール部材の側端部に複数のスリットを設けるとともに、該スリットに係合する複数の位置ずれ防止部を転動体保持器に設けることが好ましい。 In the linear motion guide device according to the present invention, the rolling element cage is made of a synthetic resin material, and has two plate portions that come into contact with the end surface portion of the slider body, and is formed on the left and right side surfaces of the guide rail. A first rolling element holding portion for holding a rolling element between the upper rail side rolling element raceway groove of the rail side rolling element raceway groove and the slider side rolling element raceway groove facing the rolling element raceway groove; Among the rail-side rolling element raceway grooves formed on the left and right side surfaces of the rail, a rolling element between the lower rail-side rolling element raceway groove and the slider-side rolling element raceway groove facing the rolling element raceway groove is provided. What has the 2nd rolling element holding part to hold | maintain and the 3rd rolling element holding part formed between the 1st rolling element holding part and the 2nd rolling element holding part can be used. In this case, it is preferable that the inner seal support portion is provided in the first rolling element holding portion of the rolling element holder.
Further, the inner seal member may have a protrusion or a groove that engages with the inner seal support portion at the left and right ends. In addition, it is preferable that a plurality of slits are provided in the side end portion of the inner seal member, and a plurality of misalignment prevention portions that engage with the slits are provided in the rolling element holder.

本発明に係る直動案内装置では、インナーシール部材の前端部と後端部を前後一対のエンドキャップに掛止しなくてもインナーシール部材を案内レールの上面部とスライダ本体の下面部との間に支持することが可能となり、スライダを案内レールに組み付ける際に案内レールの端面部と干渉するような撓みがインナーシール部材の前端部と後端部との間の中央部分に発生し難くなるので、シール性能に悪影響を及ぼす損傷がインナーシール部材のリップ部に発生することを防止することができる。   In the linear motion guide device according to the present invention, the inner seal member can be connected to the upper surface portion of the guide rail and the lower surface portion of the slider body without engaging the front end portion and the rear end portion of the inner seal member with the pair of front and rear end caps. Therefore, when the slider is assembled to the guide rail, bending that interferes with the end surface portion of the guide rail is unlikely to occur in the central portion between the front end portion and the rear end portion of the inner seal member. Therefore, it is possible to prevent the damage that adversely affects the sealing performance from occurring in the lip portion of the inner seal member.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は本発明の第１の実施形態に係る直動案内装置の正面図、図２はその平面図であって、これらの図に示されるように、本発明の第１の実施形態に係る直動案内装置は、直線状に形成された案内レール１と、この案内レール１の長手方向に相対移動するスライダ２と、このスライダ２内に転動自在に設けられた多数の球状転動体３とから構成されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a linear guide apparatus according to a first embodiment of the present invention, and FIG. 2 is a plan view thereof. As shown in these drawings, according to the first embodiment of the present invention. The linear motion guide device includes a guide rail 1 formed in a straight line, a slider 2 that relatively moves in the longitudinal direction of the guide rail 1, and a large number of spherical rolling elements 3 that are provided in the slider 2 so as to be freely rollable. It consists of and.

案内レール１及び転動体３は例えば合金鋼などの金属材料からなり、案内レール１の左右側面部１ａ，１ｂには、レール側転動体軌道溝４（図１参照）が二条ずつ形成されている。一方、図２に示すように、スライダ２はスライダ本体５と、このスライダ本体５の一端と他端に複数本（例えば四本）のエンドキャップ固定用ビス６によって装着された前後一対のエンドキャップ７と、これらのエンドキャップ７内に例えば四個ずつ組み込まれた複数のリターンガイド８とを備えて構成されている。   The guide rail 1 and the rolling element 3 are made of a metal material such as alloy steel, and two rail-side rolling element raceway grooves 4 (see FIG. 1) are formed on the left and right side surfaces 1a and 1b of the guide rail 1 respectively. . On the other hand, as shown in FIG. 2, the slider 2 includes a slider body 5 and a pair of front and rear end caps attached to one end and the other end of the slider body 5 by a plurality of (for example, four) end cap fixing screws 6. 7 and a plurality of return guides 8 incorporated into each of these end caps 7, for example, four each.

スライダ本体５は例えば合金鋼などの金属材料からなり、レール側転動体軌道溝４と各々対向する四条のスライダ側転動体軌道溝９（図３参照）を有している。また、スライダ本体５は案内レール１の両側にブロック状の転動体戻し部５ａ，５ｂ（図３参照）を有しており、これらの転動体戻し部５ａ，５ｂ内には、案内レール１の長手方向に貫通する二つの転動体戻し通路１０が形成されている。
スライダ本体５の転動体戻し部５ａ，５ｂは案内レール１の左右側面部１ａ，１ｂと対向しており、案内レール１の左右側面部１ａ，１ｂとスライダ本体５の転動体戻し部５ａ，５ｂとの間は、スライダ本体５の下側に設けられた左右一対のアンダーシール部材１１（図４参照）によってシールされている。 The slider body 5 is made of, for example, a metal material such as alloy steel, and has four slider-side rolling element raceway grooves 9 (see FIG. 3) respectively facing the rail-side rolling element raceway grooves 4. Further, the slider body 5 has block-like rolling element return portions 5a and 5b (see FIG. 3) on both sides of the guide rail 1, and in these rolling element return portions 5a and 5b, the guide rail 1 is provided. Two rolling element return passages 10 penetrating in the longitudinal direction are formed.
The rolling element return portions 5 a and 5 b of the slider body 5 are opposed to the left and right side surface portions 1 a and 1 b of the guide rail 1, and the rolling body return portions 5 a and 5 b of the slider body 5 and the left and right side surface portions 1 a and 1 b of the guide rail 1. Is sealed by a pair of left and right under seal members 11 (see FIG. 4) provided on the lower side of the slider body 5.

エンドキャップ７はほぼコ字形をなしており、これらエンドキャップ７の正面部には、案内レール１とエンドキャップ７との間隙をシールするサイドシール１２（図２参照）が装着されている。また、エンドキャップ７及びリターンガイド８は合成樹脂材にて形成されており、エンドキャップ７とリターンガイド８との間には、ほぼＵ字状に湾曲した方向転換路１３（図２参照）がそれぞれ形成されている。さらに、図４に示すように、スライダ本体５は案内レール１の上面部１ｃと対向する下面部５ｃを有しており、案内レール１の上面部１ｃとスライダ本体５の下面部５ｃとの間には、案内レール１の左右側面部と該左右側面部に対向するスライダ本体５の内面部との間をスライダ本体５の内側からシールするプレート状のインナーシール部材１４が設けられている。   The end caps 7 are substantially U-shaped, and side seals 12 (see FIG. 2) for sealing the gap between the guide rails 1 and the end caps 7 are attached to the front portions of the end caps 7. Further, the end cap 7 and the return guide 8 are formed of a synthetic resin material, and a direction change path 13 (see FIG. 2) curved in a substantially U shape is formed between the end cap 7 and the return guide 8. Each is formed. Further, as shown in FIG. 4, the slider body 5 has a lower surface portion 5 c facing the upper surface portion 1 c of the guide rail 1, and between the upper surface portion 1 c of the guide rail 1 and the lower surface portion 5 c of the slider body 5. A plate-like inner seal member 14 is provided for sealing between the left and right side portions of the guide rail 1 and the inner surface portion of the slider body 5 facing the left and right side portions from the inside of the slider body 5.

アンダーシール部材１１は熱可塑性エラストマなどの合成樹脂材からなり、スライダ本体５の全長に渡って案内レール１の左右側面部１ａ，１ｂに摺接する薄板状のリップ部１１ａ（図５参照）を有している。
方向転換路１３は、レール側転動体軌道溝４とスライダ側転動体軌道溝９との間の転動体負荷転動路に連通していると共に転動体戻し通路１０に連通している。従って、スライダ２の相対直線運動に伴って転動体負荷転動路を転動した転動体３は、方向転換路１３で方向転換した後、転動体戻し通路１０に導入されるようになっている。 The under seal member 11 is made of a synthetic resin material such as a thermoplastic elastomer, and has a thin plate-like lip portion 11 a (see FIG. 5) that is in sliding contact with the left and right side surfaces 1 a and 1 b of the guide rail 1 over the entire length of the slider body 5. is doing.
The direction changing path 13 communicates with the rolling element load rolling path between the rail side rolling element raceway groove 4 and the slider side rolling element raceway groove 9 and also communicates with the rolling element return path 10. Therefore, the rolling element 3 that has rolled on the rolling element load rolling path with the relative linear motion of the slider 2 is changed in the direction changing path 13 and then introduced into the rolling element return path 10. .

インナーシール部材１４は熱可塑性エラストマなどの合成樹脂材からなり、スライダ本体５の全長に渡って案内レール１の上面部１ｃに摺接する左右一対のリップ部１４ａ（図６参照）を有している。また、インナーシール部材１４は前後方向に延出する左右一対の腕部１４ｂを前端部と後端部に有しており、これら腕部１４ｂの先端部には、エンドキャップ７に形成された掛止凹部（図示せず）に係合する突起部１４ｃが形成されている。   The inner seal member 14 is made of a synthetic resin material such as thermoplastic elastomer, and has a pair of left and right lip portions 14a (see FIG. 6) that are in sliding contact with the upper surface portion 1c of the guide rail 1 over the entire length of the slider body 5. . The inner seal member 14 has a pair of left and right arm portions 14b extending in the front-rear direction at the front end portion and the rear end portion, and hooks formed on the end cap 7 are formed at the front end portions of the arm portions 14b. A protrusion 14c that engages with a stop recess (not shown) is formed.

レール側転動体軌道溝４とスライダ側転動体軌道溝９との間に介在する転動体３は、スライダ本体５に組み付けられた左右一対の転動体保持器１５（図４参照）に保持されている。これらの転動体保持器１５は、インナーシール部材１４と同様に、合成樹脂材から形成されている。また、転動体保持器１５はスライダ本体５の端面部に当接する二つのプレート部１５ａ，１５ｂ（図７及び図８参照）を有しており、これらのプレート部１５ａ，１５ｂには、転動体戻し通路１０と方向転換路１３とを接続する二つの通路接続孔１６が形成されているとともに、レール側転動体軌道溝４とスライダ側転動体軌道溝９との間の転動体負荷転動路と方向転換路１３との間に転動体通路を形成する二つの円弧状切欠部１７が形成されている。   The rolling element 3 interposed between the rail-side rolling element raceway groove 4 and the slider-side rolling element raceway groove 9 is held by a pair of left and right rolling element holders 15 (see FIG. 4) assembled to the slider body 5. Yes. Similar to the inner seal member 14, these rolling element holders 15 are made of a synthetic resin material. Further, the rolling element holder 15 has two plate portions 15a and 15b (see FIGS. 7 and 8) that abut against the end surface portion of the slider body 5, and the rolling portions are provided on these plate portions 15a and 15b. Two passage connection holes 16 that connect the return passage 10 and the direction change path 13 are formed, and the rolling element load rolling path between the rail-side rolling element raceway groove 4 and the slider-side rolling element raceway groove 9 is formed. Two arc-shaped notches 17 that form rolling element passages are formed between the direction change path 13 and the direction change path 13.

また、転動体保持器１５は案内レール１の左右側面部に二条ずつ形成された転動体軌道溝４のうち上側の転動体軌道溝と該転動体軌道溝に対向するスライダ側転動体軌道溝９との間の転動体３を保持する第１の転動体保持部１５ｃ（図７及び図８参照）と、案内レール１の左右側面部に二条ずつ形成された転動体軌道溝４のうち下側の転動体軌道溝と該転動体軌道溝に対向するスライダ側転動体軌道溝９との間の転動体３を保持する第２の転動体保持部１５ｄと、第１の転動体保持部１５ｃと第２の転動体保持部１５ｄとの間に形成された第３の転動体保持部１５ｅとを有しており、第１の転動体保持部１５ｃには、インナーシール部材１４を案内レール１の上面部１ｃとスライダ本体５の下面部１ｃとの間に支持するインナーシール支持部としてのインナーシール支持溝１８（図９参照）が形成されているとともに、インナーシール部材１４の左右側端部に形成されたスリット１９に係合してインナーシール部材１４の前後方向の位置ずれを防止する複数の位置ずれ防止部２０（図７参照）が形成されている。   Further, the rolling element cage 15 is composed of an upper rolling element raceway groove and a slider side rolling element raceway groove 9 facing the rolling element raceway groove among the rolling element raceway grooves 4 formed on the left and right side surfaces of the guide rail 1. 1st rolling element holding | maintenance part 15c (refer FIG.7 and FIG.8) which hold | maintains the rolling element 3 between, and the lower side among the rolling element track grooves 4 formed in the left-right side part of the guide rail 1 2 each. A second rolling element holder 15d for holding the rolling element 3 between the rolling element raceway groove and the slider-side rolling element raceway groove 9 facing the rolling element raceway groove, a first rolling element holder 15c, A third rolling element holding portion 15e formed between the second rolling element holding portion 15d and the inner rolling member holding portion 15c. An inner seal support portion that is supported between the upper surface portion 1c and the lower surface portion 1c of the slider body 5. The inner seal support groove 18 (see FIG. 9) is formed, and the inner seal member 14 is engaged with the slits 19 formed at the left and right ends of the inner seal member 14 so that the inner seal member 14 is displaced in the front-rear direction. A plurality of misregistration prevention portions 20 (see FIG. 7) are formed.

インナーシール支持溝１８はその開口幅を溝内部よりも狭くして転動体保持器１５の第１の転動体保持部１５ｃに形成されており、インナーシール部材１４の左右側端部には、インナーシール支持溝１８に嵌合する薄板状の突起部１４ｄがインナーシール部材１４の全長に渡って形成されている。
なお、転動体保持器１５の第２の転動体保持部１５ｄには、アンダーシール部材１１をスライダ本体５の下側に支持するアンダーシール支持部としてのアンダーシール支持溝２１（図７参照）が形成されている。 The inner seal support groove 18 is formed in the first rolling element holding portion 15c of the rolling element retainer 15 with the opening width being narrower than the inside of the groove. A thin plate-like protrusion 14 d that fits in the seal support groove 18 is formed over the entire length of the inner seal member 14.
The second rolling element holding portion 15d of the rolling element holder 15 has an under seal support groove 21 (see FIG. 7) as an under seal support portion for supporting the under seal member 11 on the lower side of the slider body 5. Is formed.

このような構成において、スライダ本体５に転動体保持器１５を組み付け、さらにスライダ本体５の一端と他端にエンドキャップ７を装着した後、インナーシール部材１４の左右側端部に形成された薄板状の突起部１４ｄを転動体保持器１５の第１の転動体保持部１５ｃに形成されたインナーシール支持溝１８に押し込むと、インナーシール部材１４が案内レール１の上面部１ｃとスライダ本体５の下面部５ｃとの間に支持される。これにより、インナーシール部材１４の前端部と後端部をエンドキャップ７に掛止しなくてもインナーシール部材１４を案内レール１の上面部１ｃとスライダ本体５の下面部５ｃとの間に支持することが可能となり、案内レール１にスライダ２を組み付ける際に案内レール１と干渉するような撓みがインナーシール部材１４の前端部と後端部との間の中央部分に発生し難くなるので、シール性能に悪影響を及ぼす損傷がインナーシール部材１４のリップ部１４ａに発生することを防止することができる。   In such a configuration, the rolling element holder 15 is assembled to the slider body 5, and the end cap 7 is attached to one end and the other end of the slider body 5, and then a thin plate formed at the left and right end portions of the inner seal member 14. When the protruding portion 14 d is pushed into the inner seal support groove 18 formed in the first rolling element holding portion 15 c of the rolling element holder 15, the inner seal member 14 moves between the upper surface portion 1 c of the guide rail 1 and the slider body 5. It is supported between the lower surface part 5c. Thus, the inner seal member 14 is supported between the upper surface portion 1c of the guide rail 1 and the lower surface portion 5c of the slider body 5 without the front end portion and the rear end portion of the inner seal member 14 being hooked on the end cap 7. Since it becomes difficult to cause bending that interferes with the guide rail 1 when the slider 2 is assembled to the guide rail 1 at the center portion between the front end portion and the rear end portion of the inner seal member 14, It is possible to prevent damage that adversely affects the sealing performance from occurring in the lip portion 14a of the inner seal member 14.

また、上述した第１の実施形態ではインナーシール部材１４の左右側端部に形成されたスリット１９が転動体保持器１５に設けられた位置ずれ防止部２０に係合すると、インナーシール部材１４の前後方向の動きが規制されるため、インナーシール部材１４が前後方向に位置ずれを起こすことを防止することができる。
上述した第１の実施形態ではインナーシール支持溝１８として断面が図９に示す形状のものを示したが、これに限られるものではなく、インナーシール支持溝１８の断面形状が例えば図１０（ａ）〜（ｅ）に示す形状のものであっても第１の実施形態と同様の効果を得ることができる。 In the first embodiment described above, when the slits 19 formed at the left and right end portions of the inner seal member 14 engage with the misalignment prevention portion 20 provided in the rolling element holder 15, the inner seal member 14 Since the movement in the front-rear direction is restricted, it is possible to prevent the inner seal member 14 from being displaced in the front-rear direction.
In the first embodiment described above, the inner seal support groove 18 has the shape shown in FIG. 9 as a cross section. However, the inner seal support groove 18 is not limited to this. Even if it is a thing of the shape shown to (e), the effect similar to 1st Embodiment can be acquired.

また、第１の実施形態では転動体保持器１５のインナーシール支持溝１８にインナーシール部材１４の側端部を差し込んでインナーシール部材１４を案内レール１の上面部１ｃとスライダ本体５の下面部５ｃとの間に支持するようにしたが、図１１（ａ）〜（ｃ）に示すように、インナーシール部材１４の左右側端部に溝部２２を設け、この溝部２２と係合する突起部２３を転動体保持器１５の第１の転動体保持部１５ｃにインナーシール支持部として設けても第１の実施形態と同様の効果を得ることができる。
さらに、図１２に示すように、インナーシール部材１４の左右側端部に複数の凹部２４または凸部２５を設け、これに嵌合する複数の凸部２６または凹部２７を転動体保持器１５に設けても第１の実施形態と同様の効果を得ることができる。 In the first embodiment, the side end portion of the inner seal member 14 is inserted into the inner seal support groove 18 of the rolling element retainer 15 so that the inner seal member 14 is connected to the upper surface portion 1 c of the guide rail 1 and the lower surface portion of the slider body 5. 5c. As shown in FIGS. 11A to 11C, the groove portion 22 is provided at the left and right end portions of the inner seal member 14, and the protrusion portion that engages with the groove portion 22 is provided. Even if 23 is provided in the first rolling element holding portion 15c of the rolling element retainer 15 as an inner seal support portion, the same effect as in the first embodiment can be obtained.
Furthermore, as shown in FIG. 12, a plurality of concave portions 24 or convex portions 25 are provided at the left and right end portions of the inner seal member 14, and a plurality of convex portions 26 or concave portions 27 fitted to the concave portions 24 or convex portions 25 are provided on the rolling element holder 15. Even if provided, the same effects as those of the first embodiment can be obtained.

本発明の第１の実施形態に係る直動案内装置の正面図である。It is a front view of the linear motion guide apparatus which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る直動案内装置の平面図である。It is a top view of the linear motion guide apparatus which concerns on the 1st Embodiment of this invention. 図２に示すスライダ本体の断面図である。It is sectional drawing of the slider main body shown in FIG. 図２のIV−IV線に沿う断面図である。It is sectional drawing which follows the IV-IV line of FIG. 図４に示すアンダーシール部材の平面図である。It is a top view of the under seal member shown in FIG. 図４に示すインナーシール部材を示す図で、（ａ）は平面図、（ｂ）は（ａ）のＢ−Ｂ線に沿う断面図である。It is a figure which shows the inner seal member shown in FIG. 4, (a) is a top view, (b) is sectional drawing which follows the BB line of (a). 図４に示す転動体保持器の斜視図である。It is a perspective view of the rolling element holder | retainer shown in FIG. 図７に示す転動体保持器の側面図である。It is a side view of the rolling element holder | retainer shown in FIG. 図８のIX−IX線に沿う断面図である。It is sectional drawing which follows the IX-IX line of FIG. インナーシール支持溝の変形例を示す図である。It is a figure which shows the modification of an inner seal | sticker support groove. 本発明の第２の実施形態を説明するための図である。It is a figure for demonstrating the 2nd Embodiment of this invention. 本発明の第３の実施形態を説明するための図である。It is a figure for demonstrating the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

１ 案内レール
２ スライダ
３ 転動体
４ レール側転動体軌道溝
５ スライダ本体
６ エンドキャップ固定用ビス
７ エンドキャップ
８ リターンガイド
９ スライダ側転動体軌道溝
１０ 転動体戻し通路
１１ アンダーシール部材
１２ サイドシール
１４ インナーシール部材
１５ 転動体保持器
１５ａ，１５ｂ プレート部
１５ｃ 第１の転動体保持部
１５ｄ 第２の転動体保持部
１５ｅ 第３の転動体保持部
１８ インナーシール支持溝
１９ スリット
２０ 位置ずれ防止部 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Slider 3 Rolling element 4 Rail side rolling element raceway groove 5 Slider main body 6 End cap fixing screw 7 End cap 8 Return guide 9 Slider side rolling element raceway groove 10 Rolling element return passage 11 Under seal member 12 Side seal 14 Inner seal member 15 Rolling element holders 15a, 15b Plate portion 15c First rolling element holding part 15d Second rolling element holding part 15e Third rolling element holding part 18 Inner seal support groove 19 Slit 20 Position shift prevention part

Claims (5)

案内レールの長手方向に相対移動するスライダが前記案内レールの左右側面部に形成されたレール側転動体軌道溝と各々対向する複数のスライダ側転動体軌道溝を有するスライダ本体と、該スライダ本体の一端と他端に装着された前後一対のエンドキャップと、前記案内レールの左右側面部と該左右側面部に対向するスライダ本体の内面部との間を前記スライダ本体の内側からシールする合成樹脂製のインナーシール部材と、前記スライダ本体に組み付けられた左右一対の転動体保持器とを備えてなる直動案内装置において、
前記インナーシール部材を前記案内レールの上面部と該上面部に対向するスライダ本体の下面部との間に支持するインナーシール支持部を前記左右一対の転動体保持器に設けたことを特徴とする直動案内装置。 A slider main body having a plurality of slider-side rolling element raceway grooves each opposed to a rail-side rolling element raceway groove formed on left and right side surfaces of the guide rail, the slider body relatively moving in the longitudinal direction of the guide rail; Made of synthetic resin that seals between the pair of front and rear end caps attached to one end and the other end, and the left and right side portions of the guide rail and the inner surface portion of the slider body facing the left and right side portions from the inside of the slider body In the linear motion guide device comprising the inner seal member and a pair of left and right rolling element holders assembled to the slider body,
An inner seal support portion that supports the inner seal member between the upper surface portion of the guide rail and the lower surface portion of the slider main body facing the upper surface portion is provided in the pair of left and right rolling element holders. Linear motion guide device. 前記転動体保持器は合成樹脂材からなり、かつ前記スライダ本体の端面部に当接する二つのプレート部を有するとともに、前記案内レールの左右側面部に二条ずつ形成されたレール側転動体軌道溝のうち上側のレール側転動体軌道溝と該転動体軌道溝に対向するスライダ側転動体軌道溝との間の転動体を保持する第１の転動体保持部と、前記案内レールの左右側面部に二条ずつ形成されたレール側転動体軌道溝のうち下側のレール側転動体軌道溝と該転動体軌道溝に対向するスライダ側転動体軌道溝との間の転動体を保持する第２の転動体保持部と、前記第１の転動体保持部と前記第２の転動体保持部との間に形成された第３の転動体保持部とを有することを特徴とする請求項１記載の直動案内装置。   The rolling element retainer is made of a synthetic resin material and has two plate portions that come into contact with the end surface portion of the slider main body, and rail-side rolling element raceway grooves formed on the left and right side portions of the guide rail. A first rolling element holding portion for holding a rolling element between the upper rail-side rolling element raceway groove and the slider-side rolling element raceway groove facing the rolling element raceway groove, and left and right side portions of the guide rail Of the rail-side rolling element raceway grooves formed two by two, the second rolling element that holds the rolling element between the lower rail-side rolling element raceway groove and the slider-side rolling element raceway groove facing the rolling element raceway groove is provided. 2. The straight body according to claim 1, further comprising a moving body holding portion, and a third rolling body holding portion formed between the first rolling body holding portion and the second rolling body holding portion. Motion guide device. 前記インナーシール支持部は前記第１の転動体保持部に設けられていることを特徴とする請求項２記載の直動案内装置。   The linear motion guide device according to claim 2, wherein the inner seal support portion is provided in the first rolling element holding portion. 前記インナーシール部材は前記インナーシール支持部に係合する突起部または溝部を左右側端部に有することを特徴とする請求項１〜３のいずれか一項記載の直動案内装置。   The linear motion guide device according to any one of claims 1 to 3, wherein the inner seal member has a protrusion or a groove that engages with the inner seal support at the left and right ends. 請求項１〜４のいずれか一項記載の直動案内装置において、前記インナーシール部材の側端部に複数のスリットを設けるとともに、該スリットに係合する複数の位置ずれ防止部を前記転動体保持器に設けたことを特徴とする直動案内装置。   5. The linear motion guide device according to claim 1, wherein a plurality of slits are provided at a side end portion of the inner seal member, and a plurality of misalignment prevention portions that engage with the slits are provided on the rolling elements. A linear motion guide device provided in a cage.
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JP2012237396A (en) * 2011-05-12 2012-12-06 Nsk Ltd Linear motion guide device
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JP2020112244A (en) * 2019-01-16 2020-07-27 Thk株式会社 Motion guide device
WO2024037162A1 (en) * 2022-08-17 2024-02-22 Oppo广东移动通信有限公司 Sliding assembly and electronic device

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