[go: up one dir, main page]

JP2006064007A - Linear motion guide device - Google Patents

Linear motion guide device Download PDF

Info

Publication number
JP2006064007A
JP2006064007A JP2004244106A JP2004244106A JP2006064007A JP 2006064007 A JP2006064007 A JP 2006064007A JP 2004244106 A JP2004244106 A JP 2004244106A JP 2004244106 A JP2004244106 A JP 2004244106A JP 2006064007 A JP2006064007 A JP 2006064007A
Authority
JP
Japan
Prior art keywords
slider
guide rail
rolling element
linear motion
elastic lip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004244106A
Other languages
Japanese (ja)
Inventor
Takumi Nakagawa
匠 中川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP2004244106A priority Critical patent/JP2006064007A/en
Publication of JP2006064007A publication Critical patent/JP2006064007A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16C29/065—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 rollers
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General buildup of machine tools, e.g. spindles, slides, actuators

Landscapes

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

Abstract

【課題】案内レールの側面部とスライダの内側面部との間隙を良好にシールすることのできる直動案内装置を提供する。
【解決手段】熱可塑性エストラマー、ラバー等の弾性材料からなるシール部材９，１０の弾性リップ部９ｂ，１０ｂを弓形に変形させた状態で案内レール２の側面部に接触させることで、案内レール２の側面部とスライダ３の内側面部との間隙をシールする。
【選択図】図１A linear motion guide device capable of satisfactorily sealing a gap between a side surface portion of a guide rail and an inner side surface portion of a slider.
A guide rail is formed by bringing elastic lip portions (9b, 10b) of seal members (9, 10) made of an elastic material such as thermoplastic elastomer and rubber into contact with a side surface of the guide rail (2) in a state of being deformed into an arcuate shape. The gap between the side surface portion and the inner side surface portion of the slider 3 is sealed.
[Selection] Figure 1

Description

本発明は、直線運動する物体をその移動方向に案内する手段として工作機械等で用いられる直動案内装置に関する。   The present invention relates to a linear motion guide device used in a machine tool or the like as means for guiding a linearly moving object in its moving direction.

工作機械等で用いられる直動案内装置は、一般に、転動体軌道面を左右の側面部に有する案内レールと、この案内レールの転動体軌道面と各々対向する転動体軌道面を内側面部に有するスライダと、案内レール及びスライダの転動体軌道面間に形成された直線状の転動体転動路をスライダまたは案内レールの相対的直線運動に伴って転動する多数の転動体とを備えており、転動体転動路を転動した転動体はスライダの前後方向両端に装着されたエンドキャップ内で方向転換した後、スライダ内に形成された転動体戻し通路を通って元の位置に戻るようになっている。   A linear motion guide device used in a machine tool or the like generally has a guide rail having rolling element raceway surfaces on left and right side surfaces, and a rolling element raceway surface facing each of the rolling element raceway surfaces of the guide rails on an inner side surface portion. It has a slider and a number of rolling elements that roll along a linear rolling element rolling path formed between the guide rail and the rolling element raceway surface of the slider with the relative linear motion of the slider or the guide rail. The rolling element rolling on the rolling element rolling path changes direction in the end caps attached to both ends of the slider in the front-rear direction, and then returns to the original position through the rolling element return passage formed in the slider. It has become.

このような直動案内装置では、案内レールの側面部とスライダの内側面部との間隙から転動体転動路に塵埃等の異物が侵入すると、転動体の転がり運動が損なわれ、スライダの走行性能を大きく低下させる要因となる。そこで、案内レールの側面部とスライダの内側面部との間隙から転動体転動路に塵埃等の異物が侵入するのを防ぐために、従来では、図１０に示すように、スライダ３にシール板１７を取り付け、このシール板１７の弾性リップ部１７ａを案内レール２の側面部に接触させて案内レール２の側面下部とスライダ３の内側面下部との間隙をシールしている。   In such a linear motion guide device, if foreign matter such as dust enters the rolling element rolling path from the gap between the side surface of the guide rail and the inner side surface of the slider, the rolling motion of the rolling element is impaired, and the running performance of the slider Is a factor that greatly reduces Therefore, in order to prevent foreign matter such as dust from entering the rolling element rolling path from the gap between the side surface portion of the guide rail and the inner side surface portion of the slider, conventionally, as shown in FIG. The elastic lip 17a of the seal plate 17 is brought into contact with the side surface of the guide rail 2 to seal the gap between the lower side surface of the guide rail 2 and the lower inner surface of the slider 3.

しかしながら、上述した従来技術では、シール板１７の弾性リップ部１７ａが案内レール２の側面部に対して垂直に当接している。このため、シール板１７の取付け位置が正常な位置よりもスライダの内側面側にずれた場合には案内レール２の側面部に対する弾性リップ部１７ａの接触圧が増加するため、スライダ３の摺動抵抗が増大するという問題があった。また、シール板１７の取付け位置が正常な位置よりもスライダの外側面側にずれた場合にはシール板１７の弾性リップ部１７ａと案内レール２との接触面積が小さくなるため、シール部材の弾性リップ部と案内レールとの間に隙間が生じ易くなるという問題もあった。
本発明は、このような問題点に着目してなされたものであり、案内レールの側面部とスライダの内側面部との間隙を良好にシールすることのできる直動案内装置を提供することを目的とするものである。 However, in the above-described prior art, the elastic lip portion 17 a of the seal plate 17 is in contact with the side surface portion of the guide rail 2 perpendicularly. For this reason, when the mounting position of the seal plate 17 is shifted from the normal position toward the inner side surface of the slider, the contact pressure of the elastic lip portion 17a against the side surface portion of the guide rail 2 increases. There was a problem that resistance increased. Further, when the mounting position of the seal plate 17 is shifted to the outer surface side of the slider from the normal position, the contact area between the elastic lip portion 17a of the seal plate 17 and the guide rail 2 is reduced, so that the elasticity of the seal member is increased. There is also a problem that a gap is easily generated between the lip portion and the guide rail.
The present invention has been made paying attention to such problems, and an object of the present invention is to provide a linear motion guide device that can satisfactorily seal a gap between a side surface portion of a guide rail and an inner side surface portion of a slider. It is what.

上記の目的を達成するために、請求項１の発明に係る直動案内装置は、左右側面部に転動体軌道面を有する案内レールと、該案内レールの転動体軌道面と各々対向する転動体軌道面を内側面部に有するスライダと、前記案内レール及び前記スライダの転動体軌道面間に形成された直線状の転動体転動路を前記スライダまたは前記案内レールの相対的直線運動に伴って転動する多数の転動体と、前記案内レールの側面部と前記スライダの内側面部との間に生じた隙間をシールするシール部材と、を備えた直動案内装置であって、前記案内レールの側面部に対して弓形に弾性変形した状態で接触する弾性リップ部を前記シール部材が有することを特徴とする。
請求項２の発明に係る直動案内装置は、請求項１記載の直動案内装置において、前記弾性リップ部の付根部の厚さを前記弾性リップ部の他の部分よりも僅かに薄くしたことを特徴とする。 In order to achieve the above object, a linear motion guide apparatus according to the invention of claim 1 includes a guide rail having rolling element raceway surfaces on the left and right side portions, and rolling elements respectively opposed to the rolling element raceway surfaces of the guide rail. A linear rolling element rolling path formed between a slider having a raceway surface on the inner side surface, and the guide rail and the rolling element raceway surface of the slider is rotated along with the relative linear motion of the slider or the guide rail. A linear motion guide device comprising a large number of rolling elements that move, and a seal member that seals a gap formed between a side surface portion of the guide rail and an inner side surface portion of the slider. The seal member has an elastic lip portion that comes into contact with the portion while being elastically deformed in an arcuate shape.
The linear motion guide device according to claim 2 is the linear motion guide device according to claim 1, wherein the base portion of the elastic lip portion is slightly thinner than the other portions of the elastic lip portion. It is characterized by.

請求項１の発明に係る直動案内装置によれば、案内レールに対する弾性リップ部の接触圧や接触面積がシール部材の取付け位置によって大きく変化することを抑制できるので、案内レールの側面部とスライダの内側面部との間隙を良好にシールすることができる。
請求項２の発明に係る直動案内装置によれば、弾性リップ部の付根部の厚さを弾性リップ部の他の部分よりも僅かに薄くしたことで、付根部の厚さが弾性リップ部の他の部分と同じ厚さのものと比較して、弾性リップ部が弾性変形し易くなる。これにより、案内レールの側面部に対する弾性リップ部の接触面圧を低減できるので、案内レールに対する弾性リップ部の摺動抵抗を小さくすることができる。 According to the linear motion guide device of the first aspect of the present invention, since the contact pressure and the contact area of the elastic lip portion with respect to the guide rail can be suppressed from greatly changing depending on the mounting position of the seal member, the side surface portion of the guide rail and the slider It is possible to satisfactorily seal the gap with the inner side surface portion.
According to the linear motion guide device of the second aspect of the present invention, the thickness of the base portion of the elastic lip portion is made slightly thinner than the other portions of the elastic lip portion, so that the thickness of the base portion is the elastic lip portion. The elastic lip portion is easily elastically deformed as compared with the other portions having the same thickness. Thereby, since the contact surface pressure of the elastic lip part with respect to the side part of a guide rail can be reduced, the sliding resistance of the elastic lip part with respect to a guide rail can be made small.

以下、図１ないし図９を参照して本発明の実施の形態について説明する。
図１及び図２に示すように、本発明の第１の実施形態に係る直動案内装置１は案内レール２およびスライダ３を備えており、案内レール２の左右側面部には平面状の転動体軌道面２ａが案内レール２の長手方向に沿って形成されている。この転動体軌道面２ａは案内レール２の左右側面部に二条ずつ形成されており、スライダ３の左側内側面部と右側内側面部には、案内レール２の転動体軌道面２ａと各々対向する平面状の転動体軌道面３ａ（図２参照）が形成されている。 The embodiment of the present invention will be described below with reference to FIGS.
As shown in FIGS. 1 and 2, the linear motion guide device 1 according to the first embodiment of the present invention includes a guide rail 2 and a slider 3. A moving body raceway surface 2 a is formed along the longitudinal direction of the guide rail 2. Two rolling element raceway surfaces 2 a are formed on the left and right side surfaces of the guide rail 2, and the left inner side surface and right inner side surface of the slider 3 are planarly opposed to the rolling element raceway surfaces 2 a of the guide rail 2. The rolling element raceway surface 3a (see FIG. 2) is formed.

また、直動案内装置１は案内レール２及びスライダ３の転動体軌道面２ａ，３ａ間に形成された直線状の転動体転動路をスライダ３または案内レール２の直線運動に伴って転動する多数の転動体４（図２参照）を備えている。これらの転動体４は円筒ころ状に形成されており、転動体転動路を転動した転動体４はスライダ３の前後方向両端に設けられたエンドキャップ５（図１参照）内で方向転換した後、スライダ３内に形成された転動体戻し通路６（図２参照）を通って元の位置に戻るようになっている。   The linear guide device 1 rolls along a linear rolling element rolling path formed between the guide rail 2 and the rolling element raceway surfaces 2 a and 3 a of the slider 3 along with the linear motion of the slider 3 or the guide rail 2. A number of rolling elements 4 (see FIG. 2). These rolling elements 4 are formed in a cylindrical roller shape, and the rolling elements 4 that have rolled on the rolling element rolling path change direction within end caps 5 (see FIG. 1) provided at both ends of the slider 3 in the front-rear direction. After that, it returns to the original position through the rolling element return passage 6 (see FIG. 2) formed in the slider 3.

スライダ３の左側内側面部と右側内側面部には、図２に示すように、転動体保持器７が設けられている。この転動体保持器７は案内レール２の転動体軌道面２ａと対向する二つの板状部７ａ（図４参照）を有しており、スライダ３の転動体軌道面３ａを転動する転動体４は転動体保持器７の板状部７ａに形成された長方形状の転動体保持窓８に保持されている。   As shown in FIG. 2, rolling element holders 7 are provided on the left inner surface portion and the right inner surface portion of the slider 3. This rolling element holder 7 has two plate-like portions 7 a (see FIG. 4) facing the rolling element raceway surface 2 a of the guide rail 2, and rolls on the rolling element raceway surface 3 a of the slider 3. 4 is held by a rectangular rolling element holding window 8 formed in the plate-like portion 7 a of the rolling element holder 7.

案内レール２の左右側面部とスライダ３の左右内側面部との間には、図３に示すように、例えば熱可塑性エストラマー、ラバー等の弾性材料からなる上側シール部材９および下側シール部材１０がスライダ３のほぼ全長に亘って設けられている。これらのシール部材９，１０はベース部９ａ，１０ａ（図７参照）を有しており、転動体保持器７には、シール部材９，１０のベース部９ａ，１０ａと嵌合するシール部材取付け溝１１，１２（図７参照）が形成されている。   As shown in FIG. 3, an upper seal member 9 and a lower seal member 10 made of an elastic material such as thermoplastic elastomer or rubber are provided between the left and right side surfaces of the guide rail 2 and the left and right inner side surfaces of the slider 3, respectively. The slider 3 is provided over almost the entire length. These seal members 9 and 10 have base portions 9a and 10a (see FIG. 7), and the rolling element holder 7 is attached with a seal member that fits with the base portions 9a and 10a of the seal members 9 and 10. Grooves 11 and 12 (see FIG. 7) are formed.

また、シール部材９，１０は案内レール２の側面部に接触する弾性リップ部９ｂ，１０ｂ（図６及び図７参照）を有しており、案内レール２の側面上部とスライダ３の内側面上部との間隙Ｇ１（図３参照）は上側シール部材９の弾性リップ部９ｂによってシールされ、また案内レール２の側面下部とスライダ３の内側面下部との間隙Ｇ２（図３参照）は下側シール部材１０の弾性リップ部１０ｂによってシールされている。なお、案内レール２とエンドキャップ５との間に生じた隙間はエンドキャップ５の正面に取り付けられたサイドシール板１５（図１参照）によってシールされている。   Further, the seal members 9 and 10 have elastic lip portions 9b and 10b (see FIGS. 6 and 7) that contact the side surface portion of the guide rail 2, and the upper side surface of the guide rail 2 and the upper inner surface of the slider 3. The gap G1 (see FIG. 3) is sealed by the elastic lip portion 9b of the upper seal member 9, and the gap G2 (see FIG. 3) between the lower side surface of the guide rail 2 and the lower inner side surface of the slider 3 is a lower seal. The member 10 is sealed by the elastic lip 10b. A gap generated between the guide rail 2 and the end cap 5 is sealed by a side seal plate 15 (see FIG. 1) attached to the front face of the end cap 5.

弾性リップ部９ｂ，１０ｂは、図７に示すように、付根部９ｃ，１０ｃをベース部９ａ，１０ａとの間に有している。これらの付根部９ｃ，１０ｃは弾性リップ部９ｂ，１０ｂの他の部分よりも厚さが僅かに薄くなっている。
シール部材取付け溝１１，１２はスライダ３のほぼ全長に亘って転動体保持器７に形成されており、これらのシール部材取付け溝１１，１２には、シール部材９，１０のベース部９ａ，１０ａに設けられた凹条部１３（図７参照）と嵌合する抜け止め用の凸条部１４（図５参照）がスライダ３のほぼ全長に亘って形成されている。 As shown in FIG. 7, the elastic lip portions 9b and 10b have root portions 9c and 10c between the base portions 9a and 10a. These root portions 9c and 10c are slightly thinner than the other portions of the elastic lip portions 9b and 10b.
The seal member mounting grooves 11 and 12 are formed in the rolling element holder 7 over almost the entire length of the slider 3, and the seal member mounting grooves 11 and 12 include base portions 9a and 10a of the seal members 9 and 10, respectively. A ridge portion 14 (see FIG. 5) for retaining the ridge portion 13 (see FIG. 5) fitted to the ridge portion 13 (see FIG. 7) provided on the slider 3 is formed over substantially the entire length.

このような構成において、シール部材９，１０の弾性リップ部９ｂ，１０ｂを案内レール２の側面部に当接させると、図３に示すように、シール部材９，１０の弾性リップ部９ｂ，１０ｂが弓形に弾性変形し、この状態で案内レール２の側面部に接触する。これにより、案内レール２に対する弾性リップ部９ｂ，１０ｂの接触圧や接触面積がシール部材９，１０の取付け位置によって大きく変化することを抑制できるので、案内レール２の側面部とスライダ３の内側面部との間隙を良好にシールすることができる。   In such a configuration, when the elastic lip portions 9b and 10b of the seal members 9 and 10 are brought into contact with the side surfaces of the guide rail 2, the elastic lip portions 9b and 10b of the seal members 9 and 10 as shown in FIG. Elastically deforms into an arcuate shape and contacts the side surface of the guide rail 2 in this state. Thereby, since it can suppress that the contact pressure and contact area of the elastic lip parts 9b and 10b with respect to the guide rail 2 change with the attachment positions of the sealing members 9 and 10, the side part of the guide rail 2 and the inner side part of the slider 3 can be suppressed. Can be satisfactorily sealed.

また、上述した実施形態では弾性リップ部９ｂ，１０ｂの付根部９ｃ，１０ｃの厚さを弾性リップ部９ｂ，１０ｂの他の部分よりも僅かに薄くしたことで、付根部９ｃ，１０ｃの厚さが弾性リップ部９ｂ，１０ｂの他の部分と同じ厚さのものと比較して、弾性リップ部９ｂ，１０ｂが弾性変形し易くなる。これにより、案内レール２に対する弾性リップ部９ｂ，１０ｂの接触面圧を低減できるので、案内レール２に対する弾性リップ部９ｂ，１０ｂの摺動抵抗を小さくすることができる。   In the above-described embodiment, the thickness of the base portions 9c and 10c is reduced by making the thickness of the base portions 9c and 10c of the elastic lip portions 9b and 10b slightly smaller than the other portions of the elastic lip portions 9b and 10b. However, the elastic lip portions 9b and 10b are easily elastically deformed as compared with the other portions having the same thickness as the other portions of the elastic lip portions 9b and 10b. Thereby, since the contact surface pressure of the elastic lip parts 9b and 10b with respect to the guide rail 2 can be reduced, the sliding resistance of the elastic lip parts 9b and 10b with respect to the guide rail 2 can be reduced.

さらに、上述した実施形態ではシール部材９，１０のベース部９ａ，１０ａと嵌合するシール部材取付け溝１１，１２を転動体保持器７に設けたことで、シール部材９，１０のベース部９ａ，１０ａがスライダ３の全長に亘って浮上がったり、波形に変形したりすることを抑制できるので、案内レール２の側面部とスライダ３の内側面部との間隙から転動体転動路に塵埃等の異物が侵入することを確実に防止することができる。   Furthermore, in the embodiment described above, the base member 9a of the seal members 9 and 10 is provided by providing the rolling member holder 7 with the seal member mounting grooves 11 and 12 that are fitted to the base portions 9a and 10a of the seal members 9 and 10, respectively. , 10a can be prevented from floating over the entire length of the slider 3 or deformed into a waveform, so that dust or the like can enter the rolling element rolling path from the gap between the side surface of the guide rail 2 and the inner surface of the slider 3. It is possible to reliably prevent foreign matter from entering.

また、シール部材取付け溝１１，１２を転動体保持器７に設けたことで、シール部材９，１０が長手方向に位置ずれを起こすことを抑制できるので、シール部材９，１０の位置ずれによって案内レール２の側面部に接触するシール部材９，１０の接触面積が増大することを防止できる。
また、上述した実施形態ではシール部材９，１０の長手方向両端がシール部材取付け溝１１，１２およびエンドキャップ５によって位置決めされているので、シール部材自身に芯金等の補強を施す必要がない。さらに、スライダ３の下方にシール部材やリベットの頭が突出しないので、余分な取り付けスペースを必要としない。 Further, since the seal member mounting grooves 11 and 12 are provided in the rolling element holder 7, it is possible to prevent the seal members 9 and 10 from being displaced in the longitudinal direction. It can prevent that the contact area of the sealing members 9 and 10 which contact the side part of the rail 2 increases.
Further, in the above-described embodiment, the longitudinal ends of the seal members 9 and 10 are positioned by the seal member mounting grooves 11 and 12 and the end cap 5, so that it is not necessary to reinforce the seal member itself with a metal core or the like. Furthermore, since the seal member and the head of the rivet do not protrude below the slider 3, no extra mounting space is required.

なお、上述した実施形態では転動体が円筒ころの直動案内装置に本発明を適用した場合を例示したが、本発明はこれに限定されるものではなく、転動体がボールの直動案内装置にも本発明を適用できることは勿論である。また、上述した実施形態ではシール部材９，１０のベース部９ａ，１０ａと嵌合するシール部材取付け溝１１，１２を転動体保持器７に設けたが、シール部材９，１０のベース部９ａ，１０ａと嵌合するシール部材取付け溝１１，１２をスライダ３に設けてもよい。   In the above-described embodiment, the case where the present invention is applied to a linear motion guide device in which the rolling element is a cylindrical roller is illustrated. However, the present invention is not limited to this, and the linear motion guide device in which the rolling element is a ball is used. Of course, the present invention can also be applied. In the above-described embodiment, the seal member mounting grooves 11 and 12 that are fitted to the base portions 9a and 10a of the seal members 9 and 10 are provided in the rolling element holder 7, but the base portions 9a and 10a of the seal members 9 and 10 are provided. The slider 3 may be provided with seal member mounting grooves 11 and 12 that fit into the slider 10a.

さらに、図８に示す第２の実施形態のように、シール部材９，１０のベース部９ａ，１０ａの底面部に突起部１６を設け、シール部材９，１０のベース部９ａ，１０ａがシール部材取付け溝１１，１２から抜け難くしてもよい。また、シール部材９，１０のベース部９ａ，１０ａおよびシール部材取付け溝１１，１２の形状は図３に示す形状に限られるものではなく、例えば図９に示すような段付きの形状でもよい。   Further, as in the second embodiment shown in FIG. 8, a protrusion 16 is provided on the bottom surface of the base portions 9a, 10a of the seal members 9, 10, and the base portions 9a, 10a of the seal members 9, 10 are the seal members. You may make it difficult to remove from the attachment grooves 11 and 12. Further, the shapes of the base portions 9a and 10a of the seal members 9 and 10 and the seal member mounting grooves 11 and 12 are not limited to the shapes shown in FIG. 3, but may be stepped shapes as shown in FIG.

本発明の第１の実施形態に係る直動案内装置の斜視図である。1 is a perspective view of a linear guide apparatus according to a first embodiment of the present invention. 図１に示す直動案内装置の正面図である。It is a front view of the linear guide apparatus shown in FIG. 本発明の第１の実施形態に係る直動案内装置の要部を示す図である。It is a figure which shows the principal part of the linear motion guide apparatus which concerns on the 1st Embodiment of this invention. 図２及び図３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.2 and FIG.3. 図４のV−V断面図である。It is VV sectional drawing of FIG. 図３に示すシール部材の側面図である。FIG. 4 is a side view of the seal member shown in FIG. 3. 図６のVII−VII断面図である。It is VII-VII sectional drawing of FIG. 本発明の第２の実施形態を説明するためのシール部材の断面図である。It is sectional drawing of the sealing member 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. 従来の直動案内装置を説明するための図である。It is a figure for demonstrating the conventional linear motion guide apparatus.

符号の説明Explanation of symbols

２ 案内レール
２ａ 転動体軌道面
３ スライダ
３ａ 転動体軌道面
４ 転動体
５ エンドキャップ
６ 転動体戻し通路
７ 転動体保持器
７ａ 板状部
８ 転動体保持窓
９ 上側シール部材
９ａ ベース部
９ｂ 弾性リップ部
９ｃ 付根部
１０ 下側シール部材
１０ａ ベース部
１０ｂ 弾性リップ部
１０ｃ 付根部
１１，１２ シール部材取付け溝
１３ 凹条部
１４ 凸条部
１５ サイドシール板
１６ 突起部 DESCRIPTION OF SYMBOLS 2 Guide rail 2a Rolling body track surface 3 Slider 3a Rolling body track surface 4 Rolling body 5 End cap 6 Rolling body return path 7 Rolling body holder 7a Plate-shaped part 8 Rolling body holding window 9 Upper seal member 9a Base part 9b Elastic lip Part 9c Root part 10 Lower seal member 10a Base part 10b Elastic lip part 10c Root part 11, 12 Seal member mounting groove 13 Concave part 14 Convex part 15 Side seal plate 16 Protrusion part

Claims (2)

左右側面部に転動体軌道面を有する案内レールと、該案内レールの転動体軌道面と各々対向する転動体軌道面を内側面部に有するスライダと、前記案内レール及び前記スライダの転動体軌道面間に形成された直線状の転動体転動路を前記スライダまたは前記案内レールの相対的直線運動に伴って転動する多数の転動体と、前記案内レールの側面部と前記スライダの内側面部との間隙をシールするシール部材と、を備えた直動案内装置であって、前記案内レールの側面部に対して弓形に弾性変形した状態で接触する弾性リップ部を前記シール部材が有することを特徴とする直動案内装置。   Guide rails having rolling element raceway surfaces on the left and right side surfaces, a slider having rolling element raceway surfaces facing the rolling element raceway surfaces of the guide rails on the inner side surface portion, and between the guide rails and the rolling element raceway surfaces of the slider A plurality of rolling elements that roll along a linear rolling element rolling path formed in accordance with the relative linear motion of the slider or the guide rail, a side surface portion of the guide rail, and an inner side surface portion of the slider. A linear motion guide device comprising: a seal member that seals a gap, wherein the seal member has an elastic lip portion that comes into contact with a side surface portion of the guide rail while being elastically deformed in a bow shape. Linear motion guide device. 請求項１記載の直動案内装置において、前記弾性リップ部の付根部の厚さを前記弾性リップ部の他の部分よりも僅かに薄くしたことを特徴とする直動案内装置。   2. The linear motion guide device according to claim 1, wherein a thickness of a base portion of the elastic lip portion is slightly thinner than other portions of the elastic lip portion.
JP2004244106A 2004-08-24 2004-08-24 Linear motion guide device Pending JP2006064007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004244106A JP2006064007A (en) 2004-08-24 2004-08-24 Linear motion guide device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004244106A JP2006064007A (en) 2004-08-24 2004-08-24 Linear motion guide device

Publications (1)

Publication Number Publication Date
JP2006064007A true JP2006064007A (en) 2006-03-09

Family

ID=36110682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004244106A Pending JP2006064007A (en) 2004-08-24 2004-08-24 Linear motion guide device

Country Status (1)

Country Link
JP (1) JP2006064007A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057755A (en) * 2006-09-04 2008-03-13 Nsk Ltd Linear motion guide device
JP2010185518A (en) * 2009-02-12 2010-08-26 Nsk Ltd Linear guide device
WO2013042312A1 (en) * 2011-09-21 2013-03-28 日本精工株式会社 Linear motion guide device
US9255608B2 (en) 2012-04-27 2016-02-09 Nsk Ltd. Linear guide apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057755A (en) * 2006-09-04 2008-03-13 Nsk Ltd Linear motion guide device
JP2010185518A (en) * 2009-02-12 2010-08-26 Nsk Ltd Linear guide device
WO2013042312A1 (en) * 2011-09-21 2013-03-28 日本精工株式会社 Linear motion guide device
JP2013079717A (en) * 2011-09-21 2013-05-02 Nsk Ltd Linear motion guide device
US8961016B2 (en) 2011-09-21 2015-02-24 Nsk Ltd. Linear guide apparatus
US9255608B2 (en) 2012-04-27 2016-02-09 Nsk Ltd. Linear guide apparatus

Similar Documents

Publication Publication Date Title
JPH062026Y2 (en) Dustproof seal for linear guide device
JPH0515619Y2 (en)
US5492412A (en) Ball retainer with an inner seal for a linear guide apparatus
US6766897B2 (en) Linear motion guide unit
JPH084376Y2 (en) Linear guide device
JP2006064007A (en) Linear motion guide device
JPH11241722A (en) Linear motion rolling guide unit
JP3753256B2 (en) Linear motion rolling guide unit
JP2005291341A (en) Linear motion guide bearing device and under seal
JPH0649824U (en) Linear motion rolling guide unit
JPH0620896Y2 (en) Dustproof seal for linear guide device
JPH0620923U (en) Linear motion rolling guide unit
JP5858153B2 (en) Linear motion guide device
JP4622971B2 (en) Linear motion guide device
JP2562996Y2 (en) Linear motion rolling guide unit
JP5223714B2 (en) Linear motion guide device
JP2014101911A (en) Side seal for linear guide device
JPH11287245A (en) Sealing device for linear guide
JP5817190B2 (en) Side guide for linear guide device
JP4336015B2 (en) Motion guide device and inner seal thereof
JP2002089556A (en) Sealing device for linear guide
JP2000018244A (en) Linear motion guide device
JP2009108969A (en) Linear guide device
JPH0854017A (en) Linear motion rolling guide unit
JP2005083436A (en) Linear guide device