WO2020048293A1 - 运动引导装置 - Google Patents

运动引导装置 Download PDF

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Publication number
WO2020048293A1
WO2020048293A1 PCT/CN2019/100235 CN2019100235W WO2020048293A1 WO 2020048293 A1 WO2020048293 A1 WO 2020048293A1 CN 2019100235 W CN2019100235 W CN 2019100235W WO 2020048293 A1 WO2020048293 A1 WO 2020048293A1
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WO
WIPO (PCT)
Prior art keywords
roller
holding member
protruding portion
moving body
opening
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.)
Ceased
Application number
PCT/CN2019/100235
Other languages
English (en)
French (fr)
Inventor
梁赟磊
李仁东
沙吉勋
富樫勉
宫原荘志
高桥正和
星出薰
饭田胜也
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.)
THK Co Ltd
Original Assignee
THK Co 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 THK Co Ltd filed Critical THK Co Ltd
Priority to DE112019004407.9T priority Critical patent/DE112019004407T5/de
Priority to US17/272,456 priority patent/US11542983B2/en
Priority to JP2021510961A priority patent/JP7190027B2/ja
Publication of WO2020048293A1 publication Critical patent/WO2020048293A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16C29/04—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
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/10—Arrangements for locking the bearings
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/76—Positive connections with complementary interlocking parts with tongue and groove or key and slot

Definitions

  • the present invention relates to a motion guide device, and more particularly, to a motion guide device including a projection that holds a roller holding member and prevents the roller from shifting.
  • a linear guide which is a type of motion guidance device, includes a rail and a moving block mounted to be movable along the rail.
  • a plurality of rollers capable of rolling motion are provided between the track and the moving block.
  • a plurality of rollers circulate in a ring-shaped roller circulation path.
  • the roller circulation path includes a track-side roller rolling surface provided on the track and a track side provided on the moving block and the track side provided on the track.
  • the U-shaped direction change path is connected to the end of the load path.
  • Patent Document 1 discloses a motion guide device in which mutually combined portions are provided by a protrusion portion formed on a holder and a recessed portion formed on a leg portion of a slider, and the combination portion is formed on the length of the holder
  • the protrusion of the retainer is formed to protrude toward the foot portion at a position facing the foot side surface of the slider and facing the lower portion of the foot, and the outer shape of the protrusion portion in plan view
  • the arcuate hollow cylindrical shape and the hollow cylindrical shape of the leg portion side are cut away, so that the protruding portion has a U-shape opening to the leg portion, and the recessed portion of the slider faces the protruding portion of the retainer.
  • the protruding portion is formed in a hollow U-shape, processing is complicated and forming is difficult.
  • the protruding portion is formed only at the central portion in the longitudinal direction of the holder, it is difficult to reliably prevent the holder from bending.
  • Patent Document 1 JP Patent No. 6131530
  • the present invention has been made in order to solve the above-mentioned drawbacks, and an object thereof is to provide a motion guide device including a projection that holds a roller holding member and prevents the roller from shifting.
  • the present invention provides a motion guiding device including: a support body; a moving body capable of moving along the support body; and a roller disposed between the support body and the moving body. Capable of rolling; a roller holding member provided on the moving body to hold the roller and including an upper roller holding member and a lower roller holding member, and the motion guide device is characterized in that:
  • the lower roller holding member is formed with a protruding portion facing the leg portion of the moving body along the length direction of the moving body, and the leg portion is formed toward the leg portion along the length direction.
  • the support body is opened on the side to receive the protruding portion, and the protruding width of the protruding portion is larger than the opening width of the opening.
  • the engagement design of the protruding portion and the opening portion can suppress the deformation of the lower roller holding member, thereby preventing the roller from falling off, preventing the roller from shifting, and suppressing the roller from rolling. Changes in resistance.
  • FIG. 1 is an exploded perspective view of a motion guiding device of the present invention.
  • Fig. 2 is an assembled perspective view of a motion guiding device of the present invention.
  • FIG. 3 is a perspective view of an embodiment of a roller holding member in the motion guide device of the present invention, wherein the frame portion is an enlarged view of a protrusion provided on the roller holding member.
  • FIG. 4 is a perspective view of an embodiment of a moving body main body in the exercise guiding device of the present invention, in which a frame portion is an enlarged view of a leg portion of the moving body main body.
  • FIG. 5 is a side view of an embodiment of a moving body main body in the exercise guiding device of the present invention, wherein the frame portion is an enlarged view of a leg portion of the moving body main body.
  • FIG. 6 is a view showing the mounting state of the roller holding member shown in FIG. 3 and the moving body main body shown in FIG. 4, where (a) is a perspective view when the roller holding member is mounted on the moving body main body, (b ) Is a side view showing the dimensional relationship between the protrusion and the opening, and (c) is a cross-sectional view taken along the line AA in (a), and shows the state before and after the protrusion is inserted into the opening.
  • FIG. 7 is a view of another embodiment of a roller holding member in the motion guide device of the present invention, in which (a) is a perspective view of the roller holding member, and a box portion indicates a protruding portion and a projection provided on the protruding portion; (B) is a front view of the roller holding member, and the box portion shows an enlarged view of the protruding portion and the protruding portion provided on the protruding portion.
  • FIG. 8 is a view showing the mounting state of the roller holding member shown in FIG. 7 and the moving body main body shown in FIG. 4, where (a) is a perspective view when the roller holding member is mounted on the moving body main body, (b ) Is a side view showing the dimensional relationship between the protrusion, the protrusion, and the opening, and (c) is a cross-sectional view taken along the line AA in (a), showing the state before and after the protrusion is inserted into the opening. .
  • FIG. 9 is a side view of another embodiment of the moving body main body in the exercise guiding device of the present invention, wherein the frame portion is an enlarged view of a protruding portion provided on a leg portion of the moving body main body.
  • Fig. 10 is a cross-sectional view showing the protruding portion shown in Fig. 9 when taken along the line A-A in Fig. 2.
  • FIG. 11 is a perspective view of another embodiment of a roller holding member in a motion guide device of the present invention, in which a frame portion is an enlarged view of a protruding portion.
  • a linear guide 1 as a type of motion guidance device includes a rail 2 and a moving block 3 that can be moved freely along the rail 2.
  • the moving block 3 is in the length direction of the rail 2. Relatively linear motion.
  • the rail 2 is mounted on a fixed side such as a base, and the moving block 3 is used to mount a guided object such as a table.
  • the moving block 3 includes a slider 3 a, an end cover 3 b provided on the slider 3 a at both ends in the moving direction of the slider 3 a, and an AND device provided on the end cover 3 b.
  • An end cover seal 3c is provided on a surface opposite to the side of the slider 3a and used to seal the end cover 3b.
  • a plurality of rollers B capable of rolling motion are provided between the track 2 and the moving block 3, so that the moving block 3 relatively linearly moves in the longitudinal direction of the track 2.
  • a plurality of rollers B are circulated in a ring-shaped roller circulation path.
  • the roller circulation path includes: a track-side roller rolling surface 2m (see FIG.
  • FIG. 10 in combination with FIG. 1, it can be seen that two rail-side roller rolling surfaces 2m are formed on the left and right sides of the track 2 in the up-down direction.
  • the slider 3a is opposite to the two sides of the track 2
  • Two slider-side roller rolling surfaces 3am are formed in the vertical direction on each of the two side surfaces, thereby forming a total of four load paths.
  • a total of four no-load paths and a total of eight U-shaped direction conversion paths are formed (four U-shaped directions are provided at both ends of the moving block 3, respectively). Conversion path), thereby forming a total of four roller circulation paths.
  • the unloaded passage is configured by inserting a tube 3 d having a space through which the roller B can pass into a through hole provided in the moving direction of the slider 3 a.
  • two roller holding members 3 e are respectively provided on the moving block 3 on the left and right sides of the moving block 3 for holding the roller B rolling in the load path, and, as in As shown in FIG. 3, the roller holding member 3e includes an upper roller holding member 3e1 and a lower roller holding member 3e2, and the lower roller holding member 3e2 includes a holding member main body 3e21 and is integrated in the moving direction of the moving block 3, respectively.
  • Two circulation members 3e22 are provided on both ends of the holding member main body 3e21.
  • the upper roller holding member 3e1 has the same structure as that of the lower roller holding member 3e2, and therefore detailed descriptions are omitted.
  • the U-shaped direction switching path is formed by fitting the circulation member 3e22 to the surface on the slider 3a side of the end cover 3b, so that the roller B is in the moving block 3. Perform a direction switch.
  • the lower roller holding member 3e2 is formed with a protruding portion 4 facing the leg portion of the slider 3a along the longitudinal direction of the moving block 3.
  • an opening portion 3 a 1 is formed at the leg portion of the slider 3 a to open to the rail 2 side along the longitudinal direction of the moving block 3 to accommodate the protruding portion 4.
  • FIG. 6 (a) is a perspective view when the roller holding member 3e shown in FIG. 3 is mounted on the slider 3a shown in FIG. 4, and FIG. 6 (b) is a view showing the protrusion 4 and the opening 3a1.
  • Side view of dimensional relationship As shown in FIG. 6 (b), the protrusion width D1 of the protrusion portion 4 is larger than the opening width D2 of the opening portion 3a1.
  • the protruding portion 4 and the opening portion 3a1 are changed from a state before insertion to a state after insertion.
  • the protrusion width D1 of the protrusion 4 is larger than the opening width D2 of the opening 3a1, the protrusion 4 can be reliably and firmly engaged with the opening 3a1 by elastic deformation of the protrusion 4 By suppressing the deformation of the lower roller holding member 3e2, it is possible to prevent the roller B from falling off and prevent the roller B from being displaced, and to suppress the fluctuation of the rolling resistance of the roller B.
  • FIG. 7 is a diagram of another embodiment of the roller holding member 3e. As shown in (a) and (b) of FIG. 7, the protrusion 4 of the lower roller holding member 3e2 is moved with the moving block 3. A plurality of convex portions 5 arranged at equal intervals are provided on both side surfaces in the vertical direction orthogonal to each other, and the convex portions 5 are preferably arc-shaped.
  • FIG. 8 (a) is a perspective view when the roller holding member 3e shown in FIG. 7 is mounted on the slider 3a shown in FIG. 4, and FIG. 8 (b) shows the protruding portion 4, the protruding portion 5, and the opening portion. Side view of the dimensional relationship between 3a1.
  • the opening portion 3 a 1 has an upper surface 3 a 11, a lower surface 3 a 12, and a bottom surface 3 a 13 connecting the upper surface 3 a 11 and the lower surface 3 a 12.
  • the convex portion 5 provided on the protruding portion 4 and the upper surface 3 a 11 respectively It is opposite to the lower surface 3a12, and there is a magnitude relationship between the protruding width d1 of the protruding portion 4 where the convex portion 5 is formed, the opening width d2 of the opening portion 3a1, and the protruding width d3 of the protruding portion 4 where the convex portion 5 is not formed. It is: d1> d2> d3.
  • the protruding width d1 of the protruding portion 4 where the protruding portion 5 is formed is larger than the opening width d2 of the opening portion 3a1, the elastic deformation of the protruding portion 4 and the protruding portion 5 can be used to make the The protrusion 4 is reliably and firmly engaged with the opening 3a1, which can suppress the deformation of the lower roller holding member 3e2, prevent the roller B from falling off, prevent the roller B from shifting, and suppress the roller B from rolling. Changes in resistance.
  • the protruding width d3 of the protruding portion 4 without the protruding portion 5 can be made smaller than the opening width d2 of the opening portion 3a1. Therefore, interference between the protruding portion 4 and the opening portion 3a1 can be suppressed, and The roller holding member 3 e can be easily installed on the moving block 3.
  • the convex portion 5 preferably has a circular arc shape, so that interference between the protruding portion 4 and the opening portion 3 a 1 can be further suppressed, and the roller holding member 3 e can be more easily provided on the moving block 3.
  • the plurality of convex portions 5 are arranged at equal intervals, but the arrangement manner of the convex portions 5 is not limited to this, and the plurality of convex portions 5 may be arranged at non-equal intervals.
  • the protrusions 5 are provided on both sides of the protrusion 4 of the lower roller holding member 3e2 in the vertical direction orthogonal to the moving direction of the moving block 3, but it is obvious that the protrusions 5 may be provided only on
  • the convex portion 5 is provided on one of the two side surfaces, that is, only the convex portion 5 opposed to the upper surface 3a11 or the lower surface 3a12 of the opening portion 3a1 may be provided.
  • the convex portion 5 is preferably an arc shape as described above, the shape of the convex portion 5 is not limited to this, and may be a mesa shape or the like.
  • a protrusion 3 a 2 is provided on a leg portion of the slider 3 a. More specifically, as shown in FIG. 10, among the two load paths located below the total of the four load paths, the slider 3 a is at The slider-side roller rolling surface 3am is provided with a protruding portion 3a2 opposite to the chamfered portion Bn of the end surface Bm of the roller B on the side near the widthwise centerline of the rail 2. More specifically, the protruding portion 3a2 is a portion protruding from the slider-side roller rolling surface extension line of the slider-side roller rolling surface 3am and facing the chamfered portion Bn of the end surface Bm of the roller B.
  • the holding member body 3e21 of the lower roller holding member 3e2 has a regulating surface 6 that limits the end surface Bm of the roller B.
  • the roller B may shift when rolling in the load path.
  • the roller B may move in the direction of the center axially toward the holding member main body 3e21 due to the action of gravity. Bm abuts on the restriction surface 6 of the holding member body 3e21 and presses the holding member body 3e21 toward the rail 2 side. If the pressing force of the roller B is too large and the holding member body 3e21 is pressed against the rail 2, the holding member body 3e21 and the rail 2 come into contact with each other, causing friction, thereby causing the holding member body 3e21, which is usually made of resin, to wear, and The movement of the moving block 3 on the track 2 has an adverse effect.
  • the end face Bm of the roller B first contacts the restricting surface of the holding member body 3e21. 6 abuts, and the roller B presses the holding member body 3e21 toward the rail 2 side.
  • the roller B further presses the holding member main body 3e21 to bring the holding member main body 3e21 into contact with the rail 2
  • the chamfered portion Bn of the end surface Bm of the roller B comes into contact with the protruding portion 3a2, so that the protruding portion 3a2 stops the roller B
  • the holding member body 3e21 is pressed into contact with the rail 2.
  • the force of the roller B on the roller holding member 3e can be shared, deformation of the roller holding member 3e can be further prevented, and the roller B can be further prevented. It prevents the roller B from falling off, and suppresses the fluctuation of the rolling resistance of the roller B.
  • both the protruding portion 3a2 and the chamfered portion Bn are formed by curves. Thereby, the protruding portion 3a2 and the chamfered portion Bn can be easily processed.
  • the roller holding member 3e shown in FIG. 11 is different from the roller holding member 3e shown in FIG. 7 only in that the protruding portion 4 at the position where the convex portion 5 is formed is formed in a hollow shape, and more specifically, The protruding portion 4 at a position where the convex portion 5 is formed is provided with a hollow portion 7.
  • the protruding portion 4 By forming the protruding portion 4 at the position where the protruding portion 5 is formed into a hollow shape, the protruding portion 5 and the protruding portion 4 are more easily elastically deformed, and the roller holding member 3e can be more easily provided on the moving block 3. on.
  • the present invention provides a motion guide device 1, which is characterized in that Includes: a supporting body 2; a moving body 3 capable of moving along the supporting body; a roller B arranged between the supporting body and the moving body so as to be able to roll; a roller holding member 3e which The motion guide is provided on the moving body to hold the rollers and includes an upper roller holding member 3e1 and a lower roller holding member 3e2.
  • a projection 4 is formed on the member so as to face the leg portion of the moving body along the length direction of the moving body, and the leg portion is formed to open to the support body side along the length direction.
  • the opening part 3a1 which accommodates the said protrusion part, and the protrusion width D1 of the said protrusion part is larger than the opening width D2 of the said opening part.
  • the protrusion width D1 of the protrusion portion 4 is larger than the opening width D2 of the opening portion 3a1, the protrusion portion 4 can be reliably and firmly engaged with the opening portion 3a1 by the elastic deformation of the protrusion portion 4, and the lower roller holding can be suppressed
  • the deformation of the member 3e2 can prevent the roller B from falling off, prevent the roller B from being displaced, and suppress the fluctuation of the rolling resistance of the roller B.
  • the opening portion has an upper surface 3a11, a lower surface 3a12, and a bottom surface 3a13 connecting the upper surface to the lower surface
  • the protruding portion includes a convex portion 5 opposite to the upper surface and the convex portion 5 At least one of the convex portions 5 facing the lower surface is a convex portion 5 of the lower surface.
  • the support body has a support body side roller rolling surface 2m
  • the moving body has a moving body side roller rolling surface 3am opposite to the support body side roller rolling surface
  • the roller is disposed at
  • the supporting body-side roller rolling surface and the moving body-side roller rolling surface are capable of rolling, and the moving body is provided with the roller along the width direction of the moving body-side roller rolling surface.
  • the chamfered portion Bn of the end surface Bm is a projecting portion 3a2 opposed to each other.
  • the convex portion is formed in an arc shape.
  • the convex portion 5 By making the convex portion 5 an arc shape, it is possible to further suppress interference between the protruding portion 4 and the opening portion 3 a 1, and it is easier to provide the roller holding member 3 e on the moving block 3.
  • the protruding portion at a position where the convex portion is formed is formed in a hollow shape.
  • the protruding portion 4 By forming the protruding portion 4 at the position where the protruding portion 5 is formed into a hollow shape, the protruding portion 5 and the protruding portion 4 are more easily elastically deformed, so that the roller holding member 3e can be more easily provided on the moving block 3.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Polarising Elements (AREA)
  • Vehicle Body Suspensions (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

一种运动引导装置（1），具备：支承体（2）；移动体（3），其能够沿着支承体（2）移动；滚柱（B），其配置于支承体（2）与移动体（3）之间而能够滚动；滚柱保持构件（3e），其设置于移动体（3）上而对滚柱（B）进行保持且包括上侧滚柱保持构件（3e1）和下侧滚柱保持构件（3e2），在下侧滚柱保持构件（3e2）上形成有沿着移动体（3）的长度方向而与移动体（3）的脚部对置的突起部（4），在脚部形成有沿着长度方向向支承体（2）侧开口而收容突起部（4）的开口部（3a1），突起部（4）的突起宽度（D1）大于开口部（3a1）的开口宽度（D2）。

Description

运动引导装置 技术领域
本发明涉及一种运动引导装置，具体而言涉及一种具备对滚柱保持构件进行保持而防止滚柱发生偏移的突起部的运动引导装置。
背景技术
作为运动引导装置的一种的直线导轨具备轨道和以能够沿着轨道移动的方式安装的移动块。在轨道和移动块之间设置有多个能够进行滚动运动的滚柱。多个滚柱在环状的滚柱循环路中循环，该滚柱循环路包括：由在轨道上设置的轨道侧滚柱滚动面和在移动块上设置且与该在轨道上设置的轨道侧滚柱滚动面对置的移动块侧滚柱滚动面构成的负荷通路、在移动块上设置且与该负荷通路平行的无负荷通路、以及在移动块上设置且将负荷通路的端部和无负荷通路的端部连接的U字状的方向转换路。
在上述的直线导轨中，需要对滚柱保持构件进行保持而防止在负荷通路中滚动的滚柱发生偏移。
举例来说，专利文献1公开了一种运动引导装置，通过在保持器上形成的突起部和在滑块的脚部上形成的凹部来设置相互的组合部，组合部形成于保持器的长度方向的中央部位，保持器的突起部在面向滑块的脚部侧的面且与脚部下部对置的位置处形成为向脚部侧伸出，并且，在俯视下该突起部的外周形状为圆弧的中空筒状且中空筒状的脚部侧的端部被切除，由此该突起部呈向脚部开口的U字状，另外，滑块的凹部在与保持器的突起部对置的位置处具有开口部，突起部从开口部向凹部插入，通过突起部的弹性变形，使突起部相对于凹部卡合，从而对保持器的中央部向轨道侧的弯曲进行防止或抑制。
但是，该专利文献1中的组合部存在如下技术问题。
首先，突起部形成为中空筒状的U字状，因此加工复杂，成形困难。
其次，突起部仅仅形成在保持器的长度方向的中央部位这一处部位，因此难以可靠地防止保持器的弯曲。
最后，由于滚动体是滚珠，因此不存在防止滚柱发生偏移的技术效果。
专利文献1：JP特许第6131530号公报
发明内容
本发明正是为了解决上述缺陷而提出的，其目的在于提供一种具备对滚柱保持构件进行保持而防止滚柱发生偏移的突起部的运动引导装置。
为了实现上述目的，本发明提供一种运动引导装置，具备：支承体；移动体，其能够沿着所述支承体移动；滚柱，其配置于所述支承体与所述移动体之间而能够滚动；滚柱保持构件，其设置于所述移动体上而对所述滚柱进行保持且包括上侧滚柱保持构件和下侧滚柱保持构件，所述运动引导装置的特征在于，在所述下侧滚柱保持构件上形成有沿着所述移动体的长度方向而与所述移动体的脚部对置的突起部，在所述脚部形成有沿着所述长度方向向所述支承体侧开口而收容所述突起部的开口部，所述突起部的突起宽度大于所述开口部的开口宽度。
发明效果
根据本发明的运动引导装置，通过突起部和开口部的卡合设计，能够抑制下侧滚柱保持构件的变形，从而能够防止滚柱的脱落且防止滚柱的偏移，并抑制滚柱滚动阻力的变动。
附图说明
图1是本发明的运动引导装置的分解立体图。
图2是本发明的运动引导装置的组装立体图。
图3是本发明的运动引导装置中的滚柱保持构件的一实施方式的立体图，其中，方框部表示在滚柱保持构件上设置的突起部的放大图。
图4是本发明的运动引导装置中的移动体主体的一实施方式的立体图，其中，方框部表示移动体主体的脚部的放大图。
图5是本发明的运动引导装置中的移动体主体的一实施方式的侧视图，其中，方框部表示移动体主体的脚部的放大图。
图6是表示图3所示的滚柱保持构件和图4所示的移动体主体的安装状态的图，其中，(a)是滚柱保持构件安装于移动体主体上时的立体图，(b)是表示突起部和开口部之间的尺寸关系的侧视图，(c)是沿着(a)中A-A线剖开时的剖面图，表示突起部插入开口部之前和之后的状态。
图7是本发明的运动引导装置中的滚柱保持构件的另一实施方式的图，其中，(a)是滚柱保持构件的立体图，方框部表示突起部和在突起部上设置的凸部的放大图，(b)是滚柱保持构件的主视图，方框部表示突起部和在突起部上设置的凸部的放大图。
图8是表示图7所示的滚柱保持构件和图4所示的移动体主体的安装状态的图，其中，(a)是滚柱保持构件安装于移动体主体上时的立体图，(b)是表示突起部、凸部和开口部之间的尺寸关系的侧视图，(c)是沿着(a)中A-A线剖开时的剖面图，表示突起部插入开口部之前和之后的状态。
图9是本发明的运动引导装置中的移动体主体的另一实施方式的侧视图，其中，方框部表示在移动体主体的脚部上设置的突出部的放大图。
图10是用于表示图9所示的突出部的沿着图2中A-A线剖开时的剖面图。
图11是本发明的运动引导装置中的滚柱保持构件的又一实施方式的立体图，其中，方框部表示突起部的放大图。
符号说明
1 直线导轨(运动引导装置)
2 轨道(支承体)
2m 轨道侧滚柱滚动面
3 移动块(移动体)
3a 滑块(移动体主体)
3a1 开口部
3a11 上表面
3a12 下表面
3a13 底面
3a2 突出部
3am 滑块侧滚柱滚动面
3b 端盖板(盖体)
3c 端盖板密封件
3d 管
3e 滚柱保持构件
3e1 上侧滚柱保持构件
3e2 下侧滚柱保持构件
3e21 保持构件主体
3e22 循环部件
4 突起部
5 凸部
6 限制面
7 中空部
B 滚柱
Bm 端面
Bn 倒角部
具体实施方式
以下，参照附图对本发明的各部分结构和功能进行详细的说明。另外，在以下的说明中，对于相同或相应的构件或结构标注相同的符号而省略重复的说明。
如图1和图2所示，作为运动引导装置的一种的直线导轨1具备轨道2和以能够沿着轨道2移动自如的方式安装的移动块3，移动块3在轨道2的长度方向上相对地进行直线运动。另外，轨道2安装于基座等的固定侧，移动块3用于安装工作台等被引导对象。
而且，如图1所示，移动块3包括滑块3a、在滑块3a的移动方向上的两端分别设置于滑块3a上的端盖板3b、以及设置于端盖板3b的与设有滑块3a的侧面相反侧的面上且用于对端盖板3b进行密封的端盖板密封件3c。进而，在轨道2和移动块3之间设置有多个能够进行滚动运动的滚柱B，由此移动块3在轨道2的长度方向上相对地进行直线运动。多个滚柱B在环状的滚柱循环路中循环，该滚柱循环路包括：由在轨道2上设置的轨道侧滚柱滚动面2m(参见图10)和在移动块3上设置且与该在轨道2上设置的轨道侧滚柱滚动面2m对置的滑块侧滚柱滚动面3am(参见图10)构成的负荷通路、在移动块3上设置且与该负荷通路平行的无负荷通路、以及在移动块3上设置且将负荷通路的端部和无负荷通路的端部连接的U字状的方向转换路。
而且，参见图10并结合图1可知，轨道2在左右两侧面分别沿上下方向形成有2条轨道侧滚柱滚动面2m，对应于此，滑块3a在与轨道2的两侧面分别对置的两侧面上分别沿上下方向形成有2条滑块侧滚柱滚动面3am，由此，形成有合计4条负荷通路。进而，与该合计4条负荷通路相对应地，形成有合计4条无负荷通路、合计8条U字状的方向转换路(在移动块3的两端分别设有4条U字状的方向转换路)，由此形成有合计4条滚柱循环路。
更具体地说，如图1所示，无负荷通路通过将具有能够供滚柱B通过的空间的管3d插入滑块3a的在移动方向上设置的贯通孔中而构成。另外，如图1所示，两条滚柱保持构件3e在移动块3的左右两侧而分别设置于移动块3上，用于对在负荷通路中滚动的滚柱B进行保持，并且，如图3所示，滚柱保持构件3e包括上侧滚柱保持构件3e1和下侧滚柱保持构件3e2，下侧滚柱保持构件3e2包括保持构件主体3e21和在移动块3的移动方向上分别一体地设置于该保持构件主体3e21的两端上的两个循环部件3e22。需要说明的是，如图1和图3所示，上侧滚柱保持构件3e1具有与下侧滚柱保持构件3e2相同的结构，因此省略详细的说明。进而，如图1所示，U字状的方向转换路通过将循环部件3e22嵌合于端盖板3b中的滑块3a侧的面上而形成，由此供滚柱B在移动块3中进行方向转换。
接下来，如图3所示，在下侧滚柱保持构件3e2上形成有沿着移动块3的长度方向而与滑块3a的脚部对置的突起部4。
进而，如图4和图5所示，在滑块3a的脚部形成有沿着移动块3的长度方向向轨道2侧开口而收容突起部4的开口部3a1。
接着，图6的(a)是图3所示的滚柱保持构件3e安装于图4所示的滑块3a上时的立体图，图6的(b)是表示突起部4和开口部3a1之间的尺寸关系的侧视图。如图6的(b)所示，突起部4的突起宽度D1大于开口部3a1的开口宽度D2。当将图3所示的滚柱保持构件3e向图4所示的滑块3a安装时，如图6的(c)所示，突起部4和开口部3a1从插入前的状态变更为插入后的状态，此时，由于突起部4的突起宽度D1大于开口部3a1的开口宽度D2，因此能够通过突起部4的弹性变形，使突起部4可靠且牢固地相对于开口部3a1卡合，能够抑制下侧滚柱保持构件3e2的变形，从而能够防止滚柱B的脱落且防止滚柱B的偏移，并抑制滚柱B滚动阻力的变动。
进而，图7是滚柱保持构件3e的另一实施方式的图，如图7的(a)和(b)所示，在下侧滚柱保持构件3e2的突起部4的与移动块3的移动方向正交的上下方向的两个侧面上分别设置有等间隔排列的多个凸部5，并且该凸部5优选为圆弧形状。
接着，结合图8进一步说明图7所示的凸部5的具体结构。
图8的(a)是图7所示的滚柱保持构件3e安装于图4所示的滑块3a上时的立体图，图8的(b)是表示突起部4、凸部5和开口部3a1之间的尺寸关系的侧视图。如图8的(b)所示，开口部3a1具有上表面3a11、下表面3a12和将上表面3a11与下表面3a12连结的底面3a13，在突起部4上设置的凸部5分别与上表面3a11和下表面3a12对置，并且，形成有凸部5的突起部4的突出宽度d1、开口部3a1的开口宽度d2以及未形成有凸部5的突起部4的突出宽度d3之间的大小关系为：d1＞d2＞d3。当将图7所示的滚柱保持构件3e向图4所示的滑块3a安装时，如图8的(c)所示，突起部4和开口部3a1从插入前的状态变更为插入后的状态，此时，由于形成有凸部5的突起部4的突出宽度d1大于开口部3a1的开口宽度d2，因此能够通过突起部4和凸部5的弹性变形，使形成有凸部5的突起部4可靠且牢固地相对于开口部3a1卡合，能够抑制下侧滚柱保持构件3e2的变形，从而能够防止滚柱B的脱落且防止滚柱B的偏移，并抑制滚柱B滚动阻力的变动。
进而，通过凸部5的设置而能够使未形成有凸部5的突起部4的突出宽度d3小于开口部3a1的开口宽度d2，因此能够抑制突起部4和开口部3a1之间的干涉，从而能够容易地将滚柱保持构件3e设置于移动块3上。
另外，凸部5如上所述优选为圆弧形状，从而能够进一步抑制突起部4和开口部3a1之间的干涉，更容易将滚柱保持构件3e设置于移动块3上。
需要说明的是，如上所述多个凸部5等间隔排列，但凸部5的排列方式并不限定于此，也可以非等间隔地排列多个凸部5。
另外，如图7所示，在下侧滚柱保持构件3e2的突起部4的与移动块3的移动方向正交的上下方向的两个侧面上都设置有凸部5，但显然也可以仅在两个侧面中的一个侧面上设置凸部5，即，可以仅设置与开口部3a1的上表面3a11或下表面3a12对置的凸部5。
另外，虽然凸部5如上所述优选为圆弧形状，但凸部5的形状并不限定于 此，也可以是台形状等。
接下来，参照图9和图10具体说明在滑块3a的脚部上设置的突出部3a2。
如图9所示，在滑块3a的脚部上设置有突出部3a2，更具体地，如图10所示，在合计4条负荷通路的位于下方的2条负荷通路中，滑块3a在滑块侧滚柱滚动面3am的靠近轨道2的宽度方向中心线的一侧设置有与滚柱B的端面Bm的倒角部Bn对置的突出部3a2。更具体地说，该突出部3a2是指从滑块侧滚柱滚动面3am的滑块侧滚柱滚动面延长线突出而与滚柱B的端面Bm的倒角部Bn对置的部分。
另外，如图10所示，下侧滚柱保持构件3e2的保持构件主体3e21具有对滚柱B的端面Bm进行限制的限制面6。
接着，结合图10说明本发明中的突出部3a2的具体功能。
滚柱B在负荷通路中滚动时有时会发生偏移，结合图10来说，有时会因重力的作用而沿着其中心轴向靠近保持构件主体3e21的方向移动，由此滚柱B的端面Bm抵接于保持构件主体3e21的限制面6而将保持构件主体3e21向轨道2侧按压。如果滚柱B的按压力过大而将保持构件主体3e21按压在轨道2上，则由于保持构件主体3e21和轨道2接触而产生摩擦，从而使通常由树脂制的保持构件主体3e21磨损，并且对移动块3在轨道2上的运动产生不良影响。
在本发明中，在负荷通路中滚动的滚柱B因重力的作用而沿着其中心轴向靠近保持构件主体3e21的方向移动时，滚柱B的端面Bm首先与保持构件主体3e21的限制面6抵接，从而滚柱B将保持构件主体3e21向轨道2侧按压。在滚柱B进一步按压保持构件主体3e21而使该保持构件主体3e21与轨道2接触之前，滚柱B的端面Bm的倒角部Bn与突出部3a2抵接，从而该突出部3a2阻止滚柱B将保持构件主体3e21按压为与轨道2接触。
因此，在本发明中，通过设置有如上所述的突出部3a2，能够分担滚柱B对滚柱保持构件3e作用的力，进一步防止滚柱保持构件3e的变形，从而能够进一步防止滚柱B的脱落且防止滚柱B的偏移，并抑制滚柱B滚动阻力的变动。
另外，如图10所示，该突出部3a2和倒角部Bn都由曲线构成。由此，能够容易地加工出突出部3a2和倒角部Bn。
最后，利用图11说明滚柱保持构件3e的又一实施方式。
图11所示的滚柱保持构件3e相对于图7所示的滚柱保持构件3e的不同点仅在于，形成有凸部5的位置处的突起部4形成为中空形状，更具体地说，形成有凸部5的位置处的突起部4设置有中空部7。
通过将形成有凸部5的位置处的突起部4形成为中空形状，由此凸部5和突起部4更容易产生弹性变形，从而能够更加容易地将滚柱保持构件3e设置于移动块3上。
以上，通过图1～11所示的具体实施方式说明了本发明的运动引导装置的具体结构。
如以上的说明可知，为了实现提供一种具备对滚柱保持构件进行保持而防止滚柱发生偏移的突起部的运动引导装置的发明目的，本发明提供一种运动引导装置1，其特征在于，具备：支承体2；移动体3，其能够沿着所述支承体移动；滚柱B，其配置于所述支承体与所述移动体之间而能够滚动；滚柱保持构件3e，其设置于所述移动体上而对所述滚柱进行保持且包括上侧滚柱保持构件3e1和下侧滚柱保持构件3e2，所述运动引导装置的特征在于，在所述下侧滚柱保持构件上形成有沿着所述移动体的长度方向而与所述移动体的脚部对置的突起部4，在所述脚部形成有沿着所述长度方向向所述支承体侧开口而收容所述突起部的开口部3a1，所述突起部的突起宽度D1大于所述开口部的开口宽度D2。
由于突起部4的突起宽度D1大于开口部3a1的开口宽度D2，因此能够通过突起部4的弹性变形，使突起部4可靠且牢固地相对于开口部3a1卡合，能够抑制下侧滚柱保持构件3e2的变形，从而能够防止滚柱B的脱落且防止滚柱B的偏移，并抑制滚柱B滚动阻力的变动。
优选，所述开口部具有上表面3a11、下表面3a12和将所述上表面与所述下表面连结的底面3a13，所述突起部具有与所述上表面对置的凸部5和与所述下表面对置的凸部5中的至少一方的凸部5。
通过设置凸部5，能够抑制突起部4和开口部3a1之间的干涉，从而能够容易地将滚柱保持构件3e设置于移动块3上。
优选，所述支承体具有支承体侧滚柱滚动面2m，所述移动体具有与所述支承体侧滚柱滚动面对置的移动体侧滚柱滚动面3am，所述滚柱配置于所述支 承体侧滚柱滚动面与所述移动体侧滚柱滚动面之间而能够滚动，所述移动体沿着所述移动体侧滚柱滚动面的宽度方向设置有与所述滚柱的端面Bm的倒角部Bn对置的突出部3a2。
通过设置有如上所述的突出部3a2，能够分担滚柱B对滚柱保持构件3e作用的力，进一步防止滚柱保持构件3e的变形，从而能够进一步防止滚柱B的脱落且防止滚柱B的偏移，并抑制滚柱B滚动阻力的变动。
优选，所述凸部形成为圆弧形状。
通过将凸部5设为圆弧形状，能够进一步抑制突起部4和开口部3a1之间的干涉，更容易将滚柱保持构件3e设置于移动块3上。
优选，形成有所述凸部的位置处的所述突起部形成为中空形状。
通过将形成有凸部5的位置处的突起部4形成为中空形状，凸部5和突起部4更容易产生弹性变形，从而能够更加容易地将滚柱保持构件3e设置于移动块3上。
如上所述，本发明参照附图对优选的实施方式进行了充分记载，但对于本领域技术人员来说能够了解各种变形或变更，这些变形或变更只要没有脱离本发明的技术方案限定的范围，均应被涵盖于其中。

Claims (5)

  1. 一种运动引导装置，具备：
    支承体；
    移动体，其能够沿着所述支承体移动；
    滚柱，其配置于所述支承体与所述移动体之间而能够滚动；
    滚柱保持构件，其设置于所述移动体上而对所述滚柱进行保持且包括上侧滚柱保持构件和下侧滚柱保持构件，
    所述运动引导装置的特征在于，
    在所述下侧滚柱保持构件上形成有沿着所述移动体的长度方向而与所述移动体的脚部对置的突起部，
    在所述脚部形成有沿着所述长度方向向所述支承体侧开口而收容所述突起部的开口部，
    所述突起部的突起宽度大于所述开口部的开口宽度。
  2. 根据权利要求1所述的运动引导装置，其特征在于，
    所述开口部具有上表面、下表面和将所述上表面与所述下表面连结的底面，
    所述突起部具有与所述上表面对置的凸部和与所述下表面对置的凸部中的至少一方的凸部。
  3. 根据权利要求2所述的运动引导装置，其特征在于，
    所述支承体具有支承体侧滚柱滚动面，
    所述移动体具有与所述支承体侧滚柱滚动面对置的移动体侧滚柱滚动面，
    所述滚柱配置于所述支承体侧滚柱滚动面与所述移动体侧滚柱滚动面之间而能够滚动，
    所述移动体沿着所述移动体侧滚柱滚动面的宽度方向设置有与所述滚柱的端面的倒角部对置的突出部。
  4. 根据权利要求3所述的运动引导装置，其特征在于，
    所述凸部形成为圆弧形状。
  5. 根据权利要求4所述的运动引导装置，其特征在于，
    形成有所述凸部的位置处的所述突起部形成为中空形状。
PCT/CN2019/100235 2018-09-03 2019-08-12 运动引导装置 Ceased WO2020048293A1 (zh)

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