WO2017164330A1 - Cap for movement guide device - Google Patents

Cap for movement guide device Download PDF

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Publication number
WO2017164330A1
WO2017164330A1 PCT/JP2017/011827 JP2017011827W WO2017164330A1 WO 2017164330 A1 WO2017164330 A1 WO 2017164330A1 JP 2017011827 W JP2017011827 W JP 2017011827W WO 2017164330 A1 WO2017164330 A1 WO 2017164330A1
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WO
WIPO (PCT)
Prior art keywords
cap
surface portion
thickness
guide device
outer peripheral
Prior art date
Application number
PCT/JP2017/011827
Other languages
French (fr)
Japanese (ja)
Inventor
弘幸 岸
諭 柏倉
竜二 古澤
惇博 田中
Original Assignee
Thk株式会社
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株式会社 filed Critical Thk株式会社
Priority to DE112017001548.0T priority Critical patent/DE112017001548B4/en
Priority to US16/082,405 priority patent/US10371203B2/en
Priority to CN201780016671.9A priority patent/CN108779799B/en
Priority claimed from JP2017057603A external-priority patent/JP6302114B2/en
Publication of WO2017164330A1 publication Critical patent/WO2017164330A1/en

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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
    • F16C29/08—Arrangements for covering or protecting the ways

Definitions

  • the present invention relates to a cap for closing a hole for inserting a fastening member of a guide rail of a motion guide device.
  • the motion guidance device is used to guide a linear motion (straight or curved motion) of a movable body such as a table.
  • the motion guide device includes a guide rail attached to a base, a carriage assembled to the guide rail so as to be linearly movable, and a large number of rolling elements interposed between the guide rail and the carriage so as to allow rolling motion.
  • a large number of rolling elements roll between them.
  • the guide rail is provided with holes for inserting fastening members at a constant pitch in the length direction.
  • a fastening member such as a bolt for fastening the guide rail to the base is passed through the hole for inserting the fastening member. If foreign matter such as dust accumulates in the fastening member insertion hole, the foreign matter cannot be scraped out even by the seal provided on the carriage.
  • the hole for inserting the fastening member of the guide rail may be closed with a cap. (See Patent Document 1).
  • Patent Document 1 As a conventional cap, Patent Document 1 is known in which a plurality of protrusions are provided around a disc-shaped cap body. The cap is temporarily placed on the hole for inserting the fastening member, and then driven into the hole for inserting the fastening member using a hammer or the like. The cap protrusion is provided with a fastening margin, and the cap is fixed to the hole for inserting the fastening member by the fastening margin.
  • the conventional cap for the motion guide device has a problem that when the cap is driven into the hole for inserting the fastening member, the protrusion is shaved and a flash is generated. Therefore, it is necessary to remove the flash after the driving operation, which requires man-hours. If the tightening margin of the protrusion is reduced in order to suppress the occurrence of flash, the fixing force of the cap to the guide rail is weakened.
  • an object of the present invention is to provide a cap for a motion guide device that can suppress the occurrence of flash and can also increase the fixing force of the cap to the guide rail.
  • one aspect of the present invention is a cap for closing a hole for inserting a fastening member of a guide rail of a motion guide device, and is a disk-shaped upper surface portion and hangs down from the upper surface portion.
  • the side surface portion of the cap is elastically deformed.
  • the side surface of the cap By providing the side surface of the cap with a spring function, the occurrence of flash can be suppressed and the fixing force of the cap can be increased.
  • the protrusion exists from the upper end portion or the upper end portion to the intermediate portion of the outer peripheral surface of the side surface portion, when the cap is temporarily placed in the hole for inserting the fastening member, the cap can be stabilized and the protrusion can be stabilized.
  • the lower side portion can also have a spring function.
  • FIG. 9A is a process diagram of a cap driving operation according to the present embodiment (FIG.
  • FIG. 9A shows a state in which the cap is temporarily placed in a hole for inserting a fastening member
  • FIG. 9B shows a hole for inserting the cap into the fastening member. Is shown in the state).
  • It is a bottom view of the cap of the 2nd Embodiment of this invention.
  • It is the XX sectional view taken on the line of FIG.
  • It is an upper surface side perspective view of the cap of the 3rd Embodiment of this invention.
  • It is a bottom side perspective view of the cap of the 3rd Embodiment of this invention.
  • It is a bottom view of the cap of the 3rd Embodiment of this invention.
  • It is the XIV-XIV sectional view taken on the line of FIG.
  • FIG. 1 shows a perspective view of the motion guide device
  • FIG. 2 shows a front view of the motion guide device with the end plate removed.
  • the motion guide device includes a guide rail 1 that extends linearly in the length direction, and a carriage 2 that is assembled to the guide rail 1 through a number of rolling elements 3 such as balls and rollers so as to be linearly movable in the length direction.
  • rolling elements 3 such as balls and rollers so as to be linearly movable in the length direction.
  • a plurality of fastening member insertion holes 5 are opened on the upper surface of the guide rail 1 at intervals in the length direction.
  • Bolts 4 as fastening members for fixing the guide rail 1 to the base are inserted into the holes 5.
  • a counterbore portion 5 a having a diameter larger than the head portion 4 a of the bolt 4 and a bolt insertion hole 5 b slightly larger than the screw portion 4 b of the bolt 4 are formed concentrically in the hole 5.
  • the inner diameter of the counterbore part 5a is ⁇ 1.
  • a chamfered portion 5a 1 is provided on the inner peripheral edge of the upper surface of the counterbore portion 5a (see also FIG. 9A).
  • the height of the counterbore part 5 a is set higher than the height of the head part 4 a of the bolt 4 so that the bolt 4 is completely buried in the hole 5.
  • 1 and 2 show a state in which the bolt 4 is passed through the hole 5 of the guide rail 1 and the bolt 4 is fastened to the base 18. After that, the hole 5 is closed by the cap.
  • FIGS. 1 and 2 show a state before the hole 5 is closed by the cap.
  • the guide rail 1 has a substantially square cross section, and a plurality of rolling element rolling portions 1 a on which the rolling elements roll and are formed on the upper surface and side surfaces thereof.
  • the rolling element rolling part 1 a is formed to be elongated along the length direction of the guide rail 1.
  • the carriage 2 includes a carriage body 11 and end plates 12 provided on both end faces in the moving direction of the carriage body 11.
  • Carriage body 11 comprises a central portion 11 1 facing the upper surface of the guide rail 1, the side wall 11 2 which faces depending from left and right sides in the width direction of the center portion 11 1 in the right and left side surfaces of the guide rail 1, the Prepare.
  • the carriage body 11 is formed with a loaded rolling element rolling part 2a facing the rolling element rolling part 1a of the guide rail 1 and a no-load return path 7 parallel to the loaded rolling element rolling part 2a.
  • the end plate 12 is formed with an outer peripheral side of a direction changing path 6 ′ connecting the loaded rolling element rolling portion 2 a and the no-load return path 7.
  • a rolling element circulation path is formed by the loaded rolling element rolling portion 2a of the carriage 2, the no-load return path 7, and the direction changing path 6 '.
  • a plurality of rolling elements 3 are arranged and accommodated in the rolling element circulation path.
  • the plurality of rolling elements 3 are held in series by the retainer 8 so as to be freely rotatable.
  • the retainer 8 includes a spacer 9 that is interposed between the rolling elements 3 and a band 10 that connects the spacer 9.
  • a gap with a U-shaped cross section is left between the guide rail 1 and the carriage 2 surrounding it.
  • seals 13 corresponding to the outer shape of the guide rail 1 are attached to both end surfaces of the carriage 2 in the moving direction.
  • the seal 13 prevents foreign matters such as dust, dust, and sawdust from entering the carriage 2 and adhering to the rolling elements 3.
  • the motion guide device When the motion guide device is used in an environment with a lot of dust, foreign matter accumulates in the holes 5 of the guide rail 1.
  • the foreign matter accumulated in the hole 5 cannot be removed by the seal 13 that scrapes the upper surface of the guide rail 1, and may enter the inside of the carriage 2.
  • Foreign matter that has entered the inside of the carriage 2 adheres to the rolling element rolling part 1a and the loaded rolling element rolling part 2a, and may hinder smooth rolling motion of the rolling element 3.
  • the hole 5 of the guide rail 1 is covered with a cap 21.
  • FIG. 3 shows a top perspective view of the cap 21 of the first embodiment of the present invention
  • FIG. 4 shows a bottom perspective view of the cap 21 of the first embodiment of the present invention
  • the cap 21 includes a disk-shaped upper surface portion 22, a cylindrical side surface portion 23 depending from the upper surface portion 22, and a plurality of protrusions 24 provided on the outer peripheral surface of the side surface portion 23.
  • the cap 21 is a molded product of resin, and the upper surface portion 22, the side surface portion 23, and the protrusion 24 are integrally formed. Below, the structure of each part of the cap 21 is demonstrated in order.
  • the upper surface portion 22 of the cap 21 has a disk shape.
  • the side surface portion 23 hangs down from the peripheral edge of the upper surface portion 22.
  • the upper surface portion 22 has a thick central portion 22a and a peripheral portion 22b thinner than the central portion 22a.
  • Upper surface 22 1 of the upper surface portion 22 is formed flat except for a top surface of the later-described flange 27.
  • the central portion 22a has a circular shape with a small diameter
  • the peripheral portion 22b has a ring shape surrounding the central portion 22a.
  • the central portion 22a has a constant thickness B within a circular range.
  • the peripheral portion 22b has a constant thickness C within the ring-shaped range.
  • a ring-shaped groove 25 is provided on the periphery of the lower surface of the upper surface portion 22 (in other words, the periphery of the peripheral portion 22b).
  • the cross section of the groove 25 is arcuate.
  • the thickness A of the upper surface portion 22 where the groove 25 is present is not particularly limited, but is preferably thicker than the thickness D of the side surface portion 23 described later.
  • the side part 23 is cylindrical.
  • the side surface portion 23 is not provided with a slit.
  • the upper surface portion 22 is easily elastically deformed along with the elastic deformation of the side surface portion 23.
  • the reason why the side surface portion 23 is made into a complete cylindrical shape is to prevent this.
  • the side surface portion 23 has a certain thickness D.
  • the outer diameter ⁇ ⁇ b> 2 of the side surface portion 23 is smaller than the inner diameter ⁇ ⁇ b> 1 of the counterbore portion 5 a of the hole 5.
  • the thickness D of the side surface portion 23 is thinner than the thickness C of the peripheral portion 22b of the upper surface portion 22.
  • the thickness D of the side surface portion 23 ⁇ the thickness C of the peripheral portion 22b of the upper surface portion 22 ⁇ the thickness B of the central portion 22a of the upper surface portion 22 is satisfied.
  • the thickness of each part of the cap 21 has a correlation with the rigidity of each part, and the rigidity of the side surface part 23 ⁇ the rigidity of the peripheral part 22b of the upper surface part 22 ⁇ the rigidity of the central part 22a of the upper surface part 22 is established.
  • a collar 27 is provided at the upper end portion of the outer peripheral surface 23 a of the side surface portion 23.
  • the flange 27 rests on the chamfer 5a 1 of the counterbore portion 5a (see FIG. 9 (b)).
  • a tapered surface 23b for introduction is provided at the lower end portion of the outer peripheral surface 23a of the side surface portion 23. This is to facilitate the introduction of the cap 21 into the hole 5.
  • the plurality of protrusions 24 are arranged on the outer peripheral surface 23a of the side surface portion 23 at a constant pitch in the circumferential direction.
  • the protrusion 24 exists from the upper end portion of the outer peripheral surface 23a of the side surface portion 23 to the intermediate portion in the axial direction.
  • the protrusion 24 does not necessarily exist up to the middle part, but may exist only at the upper end part, for example.
  • the protrusion 24 does not extend in the axial direction to the introduction taper surface 23b, and exists above the introduction taper surface 23b.
  • the range in which the plurality of protrusions 24 exist on the outer peripheral surface 23 a of the side surface portion 23 is 30% or less.
  • the outer peripheral surface 24 a of the protrusion 24 is located concentrically with the outer peripheral surface 23 a of the side surface portion 23.
  • the outer diameter ⁇ 3 of the outer peripheral surface 24a of the protrusion 24 is larger than the inner diameter ⁇ 1 of the counterbore part 5a of the hole 5 (see FIGS. 9A and 9B). For this reason, the protrusion 24 is driven into the counterbore part 5a of the hole 5 with an allowance.
  • the shape of the protrusion 24 is a quadrangle in a side view, but is not particularly limited, and may be a triangle.
  • a wedge-shaped inclined surface 24 b is formed at the lower end of each protrusion 24.
  • FIG. 7 shows a cross-sectional view of the cap 21 where the protrusions 24 are located
  • FIG. 8 shows an enlarged view of the portion VIII of FIG.
  • the thickness D ′ of the side surface portion 23 where the protrusion 24 is present is also thinner than the thickness C of the peripheral portion 22b.
  • a chamfered portion 27 a having a circular arc cross section is provided on the upper surface of the flange 27.
  • the chamfer 27a is continuous to the flat top surface 22 1 of the upper surface portion 22.
  • FIG. 9 shows a process chart when the cap 21 of this embodiment is driven into the hole 5. Although the bolt is omitted in FIG. 9, the bolt 4 is actually inserted into the hole 5.
  • the cap 21 is introduced into the counterbore part 5a of the hole 5, and the cap 21 is temporarily placed on the counterbore part 5a.
  • Outer diameter ⁇ 3 of the projection 24 is greater than the inner diameter ⁇ 1 of the counterbore portion 5a, in a state where the protrusion 24 is caught by the chamfered portion 5a 1 of the counterbore portion 5a, the cap 21 is temporarily placed on the counterbore portion 5a.
  • a portion of the side surface portion 23 of the cap 21 below the protrusion 24 is inserted into the counterbore portion 5a.
  • the cap 21 is driven into the counterbore part 5a. Since the cap 21 in the temporarily placed state is stable, the cap 21 is not tilted and driven.
  • the cap 21 is preferably driven by placing a metal fitting with flat top and bottom surfaces on the cap 21 and driving the metal fitting with a plastic hammer. However, the cap 21 can be directly driven with a plastic hammer. Even if the cap 21 is driven, the cap 21 does not hit the bolt 4 (not shown), and a gap is left between the cap 21 and the bolt 4.
  • Cap 21 is driven into the counterbore portion 5a to the upper surface 22 1 of the upper surface portion 22 is flush with the upper surface 1 1 of the guide rail 1. Since the plurality of protrusions 24 have an allowance, the plurality of protrusions 24 are pressed against the inner surface of the counterbore part 5a, and the cap 21 is fixed to the counterbore part 5a. The implantation of the cap 21, the flange 27 of the cap 21 rests on the chamfered portion 5a 1 of the counterbore portion 5a.
  • the cap 21 of the present embodiment has the following effects.
  • the side part 23 is elastically deformed because the rigidity of the side part 23 is lower than the rigidity of the upper face part 22.
  • the side surface portion 23 With providing the side surface portion 23 with a spring function, it is possible to suppress the occurrence of flash due to the protrusion 24 being shaved, and it is possible to increase the fixing force of the cap 21 to the counterbore portion 5a.
  • the protrusion 24 is provided only from the upper end portion or the upper end portion to the middle portion of the outer peripheral surface 23a of the side surface portion 23, when the cap 21 is temporarily placed, the sitting of the cap 21 can be stabilized and the protrusion
  • the lower side surface portion 24 can also have a spring function.
  • the rigidity of the central portion 22a of the upper surface portion 22 of the cap 21 is higher than the rigidity of the peripheral portion 22b, the rise of the central portion 22a of the upper surface portion 22 of the cap 21 can be suppressed, and the upper surface of the upper surface portion 22 of the cap 21 can be suppressed. 22 1 can be kept flat. Further, the amount of elastic deformation of the side surface portion 23 can be supplemented by elastic deformation of the peripheral portion 22b of the upper surface portion 22.
  • the rigidity of the peripheral portion 22b of the upper surface portion 22 is higher than the rigidity of the side surface portion 23, the elastic deformation of the side surface portion 23 of the cap 21 can be made difficult to be transmitted to the upper surface portion 22.
  • the ring-shaped groove 25 is provided on the peripheral edge of the lower surface of the upper surface portion 22, the elastic deformation of the side surface portion 23 of the cap 21 can be made difficult to be transmitted by the upper surface portion 22.
  • the chamfered portion 27a having a circular arc cross section is provided on the upper surface of the flange 27, it is possible to prevent the seal 13 from being caught by the flange 27 even when the seal 13 of the carriage 2 runs on the cap 21.
  • FIG. 10 is a bottom view of the cap 31 according to the second embodiment of the present invention
  • FIG. 11 is a sectional view taken along line XX of FIG.
  • the cap 31 of the second embodiment also includes a disk-shaped upper surface portion 22, a cylindrical side surface portion 23 depending from the upper surface portion 22, and a plurality of protrusions 24 provided on the outer peripheral surface of the side surface portion 23.
  • the upper surface part 22 has a thick central part 22a and a peripheral part 22b thinner than the central part 22a.
  • a collar 27 is provided on the periphery of the upper surface portion 22.
  • a plurality of protrusions 24 (six protrusions 24 in this embodiment) are provided on the outer peripheral surface of the side surface portion 23 at equal pitches in the circumferential direction. Similar to the first embodiment, the protrusion 24 exists from the upper end portion of the outer peripheral surface 23 a of the side surface portion 23 to the intermediate portion in the axial direction.
  • the thickness B of the central portion 22 a of the upper surface portion 22, the thickness C of the peripheral portion 22 b of the upper surface portion 22, and the thickness D of the side surface portion 23 is different from that of the first embodiment.
  • the thickness D of the side surface portion 23 is smaller than the thickness B of the central portion 22a of the upper surface portion 22, and is set to be equal to or greater than the thickness C of the peripheral portion 22b. That is, there is a relationship of C ⁇ D ⁇ B.
  • peripheral edge of the lower surface of the upper surface portion 22 (in other words, the peripheral edge of the peripheral portion 22b) is not provided with a ring-shaped groove 25, and the peripheral portion 22b and the side surface portion 23 are connected by a connecting portion 32 having an arcuate cross section. Connected.
  • the cap 31 of the second embodiment has the following effects.
  • the side face 23 is elastically deformed because the thickness D of the side face 23 is thinner than the thickness B of the central part 22a of the upper face 22.
  • the thickness B of the central portion 22a of the upper surface portion 22 of the cap 31 is thicker than the thickness C of the peripheral portion 22b, the rising of the central portion 22a of the upper surface portion 22 of the cap 31 can be suppressed.
  • the thickness D of the side surface portion 23 is equal to or greater than the thickness C of the peripheral portion 22b of the upper surface portion 22, it is possible to suppress elastic deformation of the side surface portion 23 having a spring function, thereby removing force and holding. Power is improved.
  • the extraction force represents the difficulty in removing the cap 31 and is measured by performing a removal test of the cap 31.
  • the holding force represents the difficulty of the cap 31 dropping into the counterbore part 5a, and is measured by performing an indentation test of the cap 31.
  • FIG. 12 shows a top perspective view of the cap 41 of the third embodiment
  • FIG. 13 shows a bottom perspective view of the cap 41.
  • the cap 41 also includes a disk-shaped upper surface portion 22, a cylindrical side surface portion 23 depending from the upper surface portion 22, and a plurality of protrusions 24 provided on the outer peripheral surface of the side surface portion 23.
  • FIG. 14 shows a bottom view of the cap 41
  • FIG. 15 shows a cross-sectional view taken along the line XIV-XIV in FIG.
  • the area (height ⁇ width) of the protrusion 24 is made larger than those of the caps 21 and 31 of the first and second embodiments in order to increase the removal force and the holding force.
  • the protrusion 24 exists from the upper end portion of the outer peripheral surface 23a of the side surface portion 23 to the intermediate portion in the axial direction.
  • the lower end of the protrusion 24 from the upper surface 22 1 of the upper surface portion 22 i.e., projection 24, the lower end of the portion in contact with the counterbore portion 5a) projection height E of the far, more than half of the total height F of the cap 41, the In the embodiment, it is set to about 2/3.
  • the protrusion 24 does not extend in the axial direction to the introduction taper surface 23b and exists above the introduction taper surface 23b.
  • a plurality of protrusions 24 are provided at equal pitches in the circumferential direction, and six in this embodiment.
  • the total range (the portion indicated by cross-hatching in FIG. 13) of the six protrusions 24 in contact with the counterbore portion 5a in the entire outer periphery of the side surface portion 23 is 20% or more and 60% or less, preferably 20% or more and 50%. It is as follows.
  • the upper surface portion 22 has a thick central portion 22a and a peripheral portion 22b thinner than the central portion 22a.
  • a collar 27 is provided on the periphery of the upper surface portion 22.
  • the thickness D of the side surface portion 23 is smaller than the thickness B of the central portion 22a of the upper surface portion 22, and is set to be equal to or greater than the thickness C of the peripheral portion 22b. That is, there is a relationship of C ⁇ D ⁇ B.
  • the peripheral portion 22b and the side surface portion 23 are connected by a connecting portion 32 having an arc cross section.
  • the cap 41 of the third embodiment has the following effects. Since the height E of the protrusion 24 is 1 ⁇ 2 or more of the total height F of the cap 41, the area where the protrusion 24 contacts the counterbore part 5a can be increased, thereby increasing the removal force and holding force. Can do.
  • the total range in which the protrusion 24 contacts the counterbore part 5a is 20% or more and 60% or less in the entire circumference of the outer peripheral surface of the side surface part 23, the area where the protrusion 24 contacts the counterbore part 5a can be increased. Thereby, extraction force and holding force can be enlarged.
  • the total range is less than 20%, there is a problem that necessary extraction force and holding force cannot be secured. Further, when the total range exceeds 60%, there is a problem that the protrusion 24 is scraped and a flash is generated.
  • the shape of the cap other shapes can be adopted as long as the gist of the present invention is not changed.
  • the number of protrusions can be set to an arbitrary number of two or more, and the shape of the protrusion can be a circle, a triangle, a pentagon, or the like other than a quadrangle.
  • the range in which a plurality of protrusions exist in the entire circumference of the outer peripheral surface of the side surface portion can be reduced to about 50%.
  • the material of the cap is not limited to resin, but may be metal such as stainless steel, aluminum, brass.
  • SYMBOLS 1 ... Guide rail, 5 ... Hole for fastening member insertion, 5a 1 ... Chamfering part of counterbore part of hole for fastening member insertion, 21, 31, 41 ... Cap, 22 ... Upper surface part, 22a ... Center part, 22b ... Peripheral part, 23 ... side part, 23a ... outer peripheral surface of side part, 24 ... projection, 25 ... ring-shaped groove, 27 ... ridge, 27a ... chamfered part of ridge, B ... thickness of central part of upper surface part (upper surface Part thickness), C ... thickness of peripheral part of upper surface part, D ... thickness of side face part between projections

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

Abstract

Provided is a cap for a movement guide device, with which the generation of burrs can be suppressed and a fixing force of the cap to a guide rail can be increased. This cap (21) is for blocking a fastening member insertion hole (5) of a guide rail (1) of the movement guide device. The cap (21) comprises: a disc-shaped top surface part (22); a cylindrical side surface part (23) which hangs down from the top surface part (22); and a plurality of projections (24) provided on an outer peripheral surface (23a) of the side surface part (23). The plurality of projections (24) are spaced apart in the circumferential direction along the outer peripheral surface (23a) of the side surface part (23), and are present at an upper edge section of the outer peripheral surface (23a) or are present from the upper edge section to an intermediate section in the axial direction. A thickness (D) of the side surface part (23) between the projections (24) is less than a thickness (B) of the top surface part (22).

Description

運動案内装置用のキャップCap for motion guide device
　本発明は、運動案内装置の案内レールの締結部材挿入用の孔を塞ぐためのキャップに関する。 The present invention relates to a cap for closing a hole for inserting a fastening member of a guide rail of a motion guide device.
　運動案内装置は、テーブル等の可動体の線運動（直線又は曲線運動）を案内するのに用いられる。運動案内装置は、ベースに取り付けられる案内レールと、案内レールに線運動可能に組み付けられるキャリッジと、案内レールとキャリッジとの間に転がり運動可能に介在する多数の転動体と、を備える。キャリッジが案内レールに対して相対移動すると、これらの間を多数の転動体が転がり運動する。転動体の転がり運動を利用することで、可動体を高精度にかつ軽快に案内することができる。 The motion guidance device is used to guide a linear motion (straight or curved motion) of a movable body such as a table. The motion guide device includes a guide rail attached to a base, a carriage assembled to the guide rail so as to be linearly movable, and a large number of rolling elements interposed between the guide rail and the carriage so as to allow rolling motion. When the carriage moves relative to the guide rail, a large number of rolling elements roll between them. By utilizing the rolling motion of the rolling element, the movable body can be guided with high accuracy and lightness.
　案内レールには、締結部材挿入用の孔が長さ方向に一定のピッチで設けられる。締結部材挿入用の孔には、案内レールをベースに締結するためのボルト等の締結部材が通される。この締結部材挿入用の孔に塵芥等の異物が溜まると、キャリッジに設けたシールでも異物を掻き出すことができない。異物がキャリッジ内に侵入し、転動体の円滑な転がり運動を妨げるのを防止するため、案内レールをベースに締結部材で取り付けた後、案内レールの締結部材挿入用の孔をキャップで塞ぐことが行われている（特許文献１参照）。 The guide rail is provided with holes for inserting fastening members at a constant pitch in the length direction. A fastening member such as a bolt for fastening the guide rail to the base is passed through the hole for inserting the fastening member. If foreign matter such as dust accumulates in the fastening member insertion hole, the foreign matter cannot be scraped out even by the seal provided on the carriage. In order to prevent foreign matter from entering the carriage and hindering the smooth rolling motion of the rolling elements, after the guide rail is attached to the base with a fastening member, the hole for inserting the fastening member of the guide rail may be closed with a cap. (See Patent Document 1).
　従来のキャップとして、特許文献１には、円盤状のキャップ本体の周囲に複数の突起を設けたものが知られている。このキャップは、締結部材挿入用の孔の上に仮置きされた後、ハンマ等を用いて締結部材挿入用の孔に打ち込まれる。キャップの突起には、締め代が設けられていて、キャップは、締め代によって締結部材挿入用の孔に固定される。 As a conventional cap, Patent Document 1 is known in which a plurality of protrusions are provided around a disc-shaped cap body. The cap is temporarily placed on the hole for inserting the fastening member, and then driven into the hole for inserting the fastening member using a hammer or the like. The cap protrusion is provided with a fastening margin, and the cap is fixed to the hole for inserting the fastening member by the fastening margin.
特開２００２－２２７８３８号公報JP 2002-227838 A
　しかし、従来の運動案内装置用のキャップにあっては、キャップを締結部材挿入用の孔に打ち込むとき、突起が削れてばりが発生するという課題がある。そのため、打ち込み作業の後にばりを取り除く必要があり、工数がかかる。ばりの発生を抑えるために、突起の締め代を小さくすると、案内レールへのキャップの固定力が弱まってしまう。 However, the conventional cap for the motion guide device has a problem that when the cap is driven into the hole for inserting the fastening member, the protrusion is shaved and a flash is generated. Therefore, it is necessary to remove the flash after the driving operation, which requires man-hours. If the tightening margin of the protrusion is reduced in order to suppress the occurrence of flash, the fixing force of the cap to the guide rail is weakened.
　そこで本発明は、ばりの発生を抑制でき、案内レールへのキャップの固定力も高めることができる運動案内装置用のキャップを提供することを目的とする。 Therefore, an object of the present invention is to provide a cap for a motion guide device that can suppress the occurrence of flash and can also increase the fixing force of the cap to the guide rail.
　上記課題を解決するために、本発明の一態様は、運動案内装置の案内レールの締結部材挿入用の孔を塞ぐためのキャップであって、円盤状の上面部と、前記上面部から垂下する円筒状の側面部と、前記側面部の外周面に設けられる複数の突起と、を備え、前記複数の突起は、前記側面部の前記外周面に円周方向に互いに離れると共に、前記外周面の上端部又は前記上端部から軸方向の中間部まで存在し、前記突起間における前記側面部の厚さが、前記上面部の厚さよりも薄い運動案内装置用のキャップである。 In order to solve the above-described problems, one aspect of the present invention is a cap for closing a hole for inserting a fastening member of a guide rail of a motion guide device, and is a disk-shaped upper surface portion and hangs down from the upper surface portion. A cylindrical side surface portion and a plurality of protrusions provided on the outer peripheral surface of the side surface portion, wherein the plurality of protrusions are circumferentially separated from the outer peripheral surface of the side surface portion, and It is a cap for a motion guide device that exists from the upper end portion or the upper end portion to an intermediate portion in the axial direction, and the thickness of the side surface portion between the protrusions is thinner than the thickness of the upper surface portion.
　本発明の一態様によれば、キャップの側面部の剛性が上面部の剛性よりも低いので、キャップの側面部が弾性変形する。キャップの側面部にばねの機能を持たせることにより、ばりの発生を抑制でき、キャップの固定力も高めることができる。また、突起が側面部の外周面の上端部又は上端部から中間部まで存在するので、キャップを締結部材挿入用の孔に仮置きしたとき、キャップの座りを安定させることができると共に、突起の下の側面部にもばねの機能を持たせることができる。 According to one aspect of the present invention, since the rigidity of the side surface portion of the cap is lower than the rigidity of the upper surface portion, the side surface portion of the cap is elastically deformed. By providing the side surface of the cap with a spring function, the occurrence of flash can be suppressed and the fixing force of the cap can be increased. In addition, since the protrusion exists from the upper end portion or the upper end portion to the intermediate portion of the outer peripheral surface of the side surface portion, when the cap is temporarily placed in the hole for inserting the fastening member, the cap can be stabilized and the protrusion can be stabilized. The lower side portion can also have a spring function.
本発明の第１の実施形態のキャップが打ち込まれる運動案内装置の斜視図である。It is a perspective view of the exercise | movement guide apparatus with which the cap of the 1st Embodiment of this invention is driven. 上記運動案内装置の正面図である。It is a front view of the said exercise | movement guide apparatus. 本実施形態のキャップの上面側斜視図である。It is an upper surface side perspective view of the cap of this embodiment. 本実施形態のキャップの底面側斜視図である。It is a bottom side perspective view of the cap of this embodiment. 本実施形態のキャップの底面図である。It is a bottom view of the cap of this embodiment. 本実施形態のキャップの断面図（突起が存在しない部分の断面図）である。It is sectional drawing (sectional drawing of the part in which a processus | protrusion does not exist) of the cap of this embodiment. 本実施形態のキャップの断面図（突起が存在する部分の断面図）である。It is sectional drawing (sectional drawing of the part in which protrusion exists) of the cap of this embodiment. 図７のVIII部拡大図である。It is the VIII section enlarged view of FIG. 本実施形態のキャップの打込み作業の工程図である（図９（ａ）はキャップを締結部材挿入用の孔に仮置きした状態を示し、図９（ｂ）はキャップを締結部材挿入用の孔に打ち込んだ状態を示す）。FIG. 9A is a process diagram of a cap driving operation according to the present embodiment (FIG. 9A shows a state in which the cap is temporarily placed in a hole for inserting a fastening member, and FIG. 9B shows a hole for inserting the cap into the fastening member. Is shown in the state). 本発明の第２の実施形態のキャップの底面図である。It is a bottom view of the cap of the 2nd Embodiment of this invention. 図１０のX-X線断面図である。It is the XX sectional view taken on the line of FIG. 本発明の第３の実施形態のキャップの上面側斜視図である。It is an upper surface side perspective view of the cap of the 3rd Embodiment of this invention. 本発明の第３の実施形態のキャップの底面側斜視図である。It is a bottom side perspective view of the cap of the 3rd Embodiment of this invention. 本発明の第３の実施形態のキャップの底面図である。It is a bottom view of the cap of the 3rd Embodiment of this invention. 図１４のXIV-XIV線断面図である。It is the XIV-XIV sectional view taken on the line of FIG.
　以下、添付図面を参照して、本発明の実施形態の運動案内装置用のキャップを詳細に説明する。ただし、本発明の運動案内装置用のキャップは種々の形態で具体化することができ、明細書に記載される実施形態に限定されるものではない。本実施形態は、明細書の開示を十分にすることによって、当業者が発明の範囲を十分に理解できるようにする意図をもって提供されるものである。
（第１の実施形態） Hereinafter, a cap for a motion guide apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the cap for the motion guide device of the present invention can be embodied in various forms, and is not limited to the embodiments described in the specification. This embodiment is provided with the intention of enabling those skilled in the art to fully understand the scope of the invention by fully disclosing the specification.
(First embodiment)
　キャップが打ち込まれる運動案内装置の構成は、以下のとおりである。図１は、運動案内装置の斜視図を示し、図２はエンドプレートを外した運動案内装置の正面図を示す。運動案内装置は、長さ方向に直線状に伸びる案内レール１と、この案内レール１にボール、ローラ等の多数の転動体３を介して長さ方向に直線運動可能に組み付けられるキャリッジ２と、を備える。なお、以下では、案内レール１を水平面に取り付け、案内レール１を長さ方向から見たときの方向、すなわち図１、図２の上下、左右、前後方向を用いて、運動案内装置の構成を説明するが、運動案内装置の配置はこれに限られるものではない。また、図面において、同一の構成要素には同一の符号を附す。 The configuration of the motion guide device in which the cap is driven is as follows. FIG. 1 shows a perspective view of the motion guide device, and FIG. 2 shows a front view of the motion guide device with the end plate removed. The motion guide device includes a guide rail 1 that extends linearly in the length direction, and a carriage 2 that is assembled to the guide rail 1 through a number of rolling elements 3 such as balls and rollers so as to be linearly movable in the length direction. Is provided. In the following description, the configuration of the motion guide apparatus will be described using the guide rail 1 attached to a horizontal plane and the direction when the guide rail 1 is viewed from the length direction, that is, the up / down, left / right, and front / rear directions of FIGS. As will be described, the arrangement of the motion guide device is not limited to this. In the drawings, the same components are denoted by the same reference numerals.
　図１に示すように、案内レール１の上面には、長さ方向に相互に間隔を置いて複数の締結部材挿入用の孔５（以下、単に孔５という）が開口する。孔５には、案内レール１をベースに固定するための締付け部材としてのボルト４が挿入される。図２に示すように、孔５には、ボルト４の頭部４ａよりも径の大きなザグリ部５ａと、ボルト４のねじ部４ｂよりも僅かに大きいボルト挿入穴５ｂとが同心円状に形成される。ザグリ部５ａの内径はΦ１である。ザグリ部５ａの上面の内周縁には、面取り部５ａ１が設けられる（図９（ａ）も参照）。ボルト４が孔５内に完全に埋没するように、ザグリ部５ａの高さはボルト４の頭部４ａの高さよりも高く設定される。孔５にボルト４を通し、ボルト４をベース１８にねじ込むことによって、ボルト４の頭部４ａが案内レール１のザグリ部５ａの座面に着座し、案内レール１がベース１８に固定される。 As shown in FIG. 1, a plurality of fastening member insertion holes 5 (hereinafter simply referred to as holes 5) are opened on the upper surface of the guide rail 1 at intervals in the length direction. Bolts 4 as fastening members for fixing the guide rail 1 to the base are inserted into the holes 5. As shown in FIG. 2, a counterbore portion 5 a having a diameter larger than the head portion 4 a of the bolt 4 and a bolt insertion hole 5 b slightly larger than the screw portion 4 b of the bolt 4 are formed concentrically in the hole 5. The The inner diameter of the counterbore part 5a is Φ1. A chamfered portion 5a 1 is provided on the inner peripheral edge of the upper surface of the counterbore portion 5a (see also FIG. 9A). The height of the counterbore part 5 a is set higher than the height of the head part 4 a of the bolt 4 so that the bolt 4 is completely buried in the hole 5. By passing the bolt 4 through the hole 5 and screwing the bolt 4 into the base 18, the head 4 a of the bolt 4 is seated on the seating surface of the counterbored portion 5 a of the guide rail 1, and the guide rail 1 is fixed to the base 18.
　テーブル等の線運動する可動体は、キャリッジ２の上面に図示しないボルトを用いて取り付けられる。図１及び図２には、案内レール１の孔５にボルト４を通し、ボルト４をベース１８に締めた状態が示されている。その後孔５はキャップによって塞がれるが、図１及び図２には孔５をキャップで塞ぐ前の状態が示されている。 A movable body that moves linearly, such as a table, is attached to the upper surface of the carriage 2 using bolts (not shown). 1 and 2 show a state in which the bolt 4 is passed through the hole 5 of the guide rail 1 and the bolt 4 is fastened to the base 18. After that, the hole 5 is closed by the cap. FIGS. 1 and 2 show a state before the hole 5 is closed by the cap.
　図２に示すように、案内レール１は、断面略四角形状で、その上面及び側面には、転動体が転がり運動する複数の転動体転走部１ａが形成される。転動体転走部１ａは、案内レール１の長さ方向に沿って細長く形成される。 As shown in FIG. 2, the guide rail 1 has a substantially square cross section, and a plurality of rolling element rolling portions 1 a on which the rolling elements roll and are formed on the upper surface and side surfaces thereof. The rolling element rolling part 1 a is formed to be elongated along the length direction of the guide rail 1.
　図１に示すように、キャリッジ２は、キャリッジ本体１１と、キャリッジ本体１１の移動方向の両端面に設けられるエンドプレート１２と、を備える。キャリッジ本体１１は、案内レール１の上面に対向する中央部１１１と、その中央部１１１の幅方向の左右両側から垂下して案内レール１の左右側面に対向する側壁部１１２と、を備える。キャリッジ本体１１には、案内レール１の転動体転走部１ａに対向する負荷転動体転走部２ａ及び負荷転動体転走部２ａに平行な無負荷戻し路７が形成される。エンドプレート１２には、負荷転動体転走部２ａ及び無負荷戻し路７を接続する方向転換路６´の外周側が形成される。 As shown in FIG. 1, the carriage 2 includes a carriage body 11 and end plates 12 provided on both end faces in the moving direction of the carriage body 11. Carriage body 11 comprises a central portion 11 1 facing the upper surface of the guide rail 1, the side wall 11 2 which faces depending from left and right sides in the width direction of the center portion 11 1 in the right and left side surfaces of the guide rail 1, the Prepare. The carriage body 11 is formed with a loaded rolling element rolling part 2a facing the rolling element rolling part 1a of the guide rail 1 and a no-load return path 7 parallel to the loaded rolling element rolling part 2a. The end plate 12 is formed with an outer peripheral side of a direction changing path 6 ′ connecting the loaded rolling element rolling portion 2 a and the no-load return path 7.
　キャリッジ２の負荷転動体転走部２ａ、無負荷戻し路７、及び方向転換路６´によって転動体循環路が形成される。転動体循環路には、複数の転動体３が配列・収容される。複数の転動体３は、リテーナ８に一連に回転自在に保持される。リテーナ８は、転動体３間に介在する間座部９と、間座部９を連結するバンド１０と、を備える。 A rolling element circulation path is formed by the loaded rolling element rolling portion 2a of the carriage 2, the no-load return path 7, and the direction changing path 6 '. A plurality of rolling elements 3 are arranged and accommodated in the rolling element circulation path. The plurality of rolling elements 3 are held in series by the retainer 8 so as to be freely rotatable. The retainer 8 includes a spacer 9 that is interposed between the rolling elements 3 and a band 10 that connects the spacer 9.
　案内レール１とそれを囲むキャリッジ２との間には断面Ｕ字形状のすきまが空く。このすきまを塞ぐために、キャリッジ２の移動方向の両端面には案内レール１の外形形状に対応するシール１３が取り付けられる。シール１３によって塵、埃、きり屑等の異物がキャリッジ２の内部に侵入し、転動体３に付着するのが防止される。 A gap with a U-shaped cross section is left between the guide rail 1 and the carriage 2 surrounding it. In order to close this gap, seals 13 corresponding to the outer shape of the guide rail 1 are attached to both end surfaces of the carriage 2 in the moving direction. The seal 13 prevents foreign matters such as dust, dust, and sawdust from entering the carriage 2 and adhering to the rolling elements 3.
　運動案内装置を塵芥の多い環境で使用した場合、案内レール１の孔５にも異物が溜まる。孔５に溜まった異物は、案内レール１の上面を掻き取るシール１３では除去することができず、キャリッジ２の内部に侵入する可能性がある。キャリッジ２の内部に侵入した異物は、転動体転走部１ａ及び負荷転動体転走部２ａに付着し、転動体３の円滑な転がり運動を妨げる可能性がある。これを防止するために、案内レール１の孔５はキャップ２１によって覆われる。 When the motion guide device is used in an environment with a lot of dust, foreign matter accumulates in the holes 5 of the guide rail 1. The foreign matter accumulated in the hole 5 cannot be removed by the seal 13 that scrapes the upper surface of the guide rail 1, and may enter the inside of the carriage 2. Foreign matter that has entered the inside of the carriage 2 adheres to the rolling element rolling part 1a and the loaded rolling element rolling part 2a, and may hinder smooth rolling motion of the rolling element 3. In order to prevent this, the hole 5 of the guide rail 1 is covered with a cap 21.
　図３は本発明の第１の実施形態のキャップ２１の上面側斜視図を示し、図４は本発明の第１の実施形態のキャップ２１の底面側斜視図を示す。図３、図４に示すように、キャップ２１は、円盤状の上面部２２と、上面部２２から垂下する円筒状の側面部２３と、側面部２３の外周面に設けられる複数の突起２４と、を備える。キャップ２１は、樹脂の成型品であり、上面部２２、側面部２３、突起２４は、一体に形成される。以下に、キャップ２１の各部の構成を順番に説明する。 FIG. 3 shows a top perspective view of the cap 21 of the first embodiment of the present invention, and FIG. 4 shows a bottom perspective view of the cap 21 of the first embodiment of the present invention. As shown in FIGS. 3 and 4, the cap 21 includes a disk-shaped upper surface portion 22, a cylindrical side surface portion 23 depending from the upper surface portion 22, and a plurality of protrusions 24 provided on the outer peripheral surface of the side surface portion 23. . The cap 21 is a molded product of resin, and the upper surface portion 22, the side surface portion 23, and the protrusion 24 are integrally formed. Below, the structure of each part of the cap 21 is demonstrated in order.
　図３、図４に示すように、キャップ２１の上面部２２は円盤状である。上面部２２の周縁から側面部２３が垂下する。図６の断面図に示すように、上面部２２は、厚さが厚い中央部２２ａと、中央部２２ａよりも厚さが薄い周辺部２２ｂと、を有する。上面部２２の上面２２１は、後述する鍔２７の上面を除いて平坦に形成される。 As shown in FIGS. 3 and 4, the upper surface portion 22 of the cap 21 has a disk shape. The side surface portion 23 hangs down from the peripheral edge of the upper surface portion 22. As shown in the cross-sectional view of FIG. 6, the upper surface portion 22 has a thick central portion 22a and a peripheral portion 22b thinner than the central portion 22a. Upper surface 22 1 of the upper surface portion 22 is formed flat except for a top surface of the later-described flange 27.
　図５の底面図に示すように、中央部２２ａは小径の円状であり、周辺部２２ｂは中央部２２ａを囲むリング状である。中央部２２ａは、円状の範囲内において一定の厚さＢを持つ。周辺部２２ｂは、リング状の範囲内において一定の厚さＣを持つ。上面部２２の下面の周縁（言い換えれば周辺部２２ｂの周縁）には、リング状の溝２５が設けられる。図６に示すように、溝２５の断面は、円弧状である。なお、溝２５のある部分の上面部２２の厚さＡは、特に限定されないが、後述する側面部２３の厚さＤよりも厚いのが望ましい。 As shown in the bottom view of FIG. 5, the central portion 22a has a circular shape with a small diameter, and the peripheral portion 22b has a ring shape surrounding the central portion 22a. The central portion 22a has a constant thickness B within a circular range. The peripheral portion 22b has a constant thickness C within the ring-shaped range. A ring-shaped groove 25 is provided on the periphery of the lower surface of the upper surface portion 22 (in other words, the periphery of the peripheral portion 22b). As shown in FIG. 6, the cross section of the groove 25 is arcuate. The thickness A of the upper surface portion 22 where the groove 25 is present is not particularly limited, but is preferably thicker than the thickness D of the side surface portion 23 described later.
　図３、図４に示すように、側面部２３は円筒状である。側面部２３には、スリットは設けられていない。側面部２３にスリットを設けると、側面部２３の弾性変形に伴って、上面部２２が弾性変形し易くなる。側面部２３を完全な円筒状にするのは、これを防止するためである。図６に示すように、側面部２３は、一定の厚さＤを持つ。図５に示すように、側面部２３の外径Φ２は、孔５のザグリ部５ａの内径Φ１よりも小さい。 As shown in FIG. 3 and FIG. 4, the side part 23 is cylindrical. The side surface portion 23 is not provided with a slit. When the side surface portion 23 is provided with a slit, the upper surface portion 22 is easily elastically deformed along with the elastic deformation of the side surface portion 23. The reason why the side surface portion 23 is made into a complete cylindrical shape is to prevent this. As shown in FIG. 6, the side surface portion 23 has a certain thickness D. As shown in FIG. 5, the outer diameter Φ <b> 2 of the side surface portion 23 is smaller than the inner diameter Φ <b> 1 of the counterbore portion 5 a of the hole 5.
　側面部２３の厚さＤは、上面部２２の周辺部２２ｂの厚さＣよりも薄い。側面部２３の厚さＤ＜上面部２２の周辺部２２ｂの厚さＣ＜上面部２２の中央部２２ａの厚さＢ、の関係がある。キャップ２１の各部の肉厚は、各部の剛性と相関関係があり、側面部２３の剛性＜上面部２２の周辺部２２ｂの剛性＜上面部２２の中央部２２ａの剛性、が成立する。 The thickness D of the side surface portion 23 is thinner than the thickness C of the peripheral portion 22b of the upper surface portion 22. The thickness D of the side surface portion 23 <the thickness C of the peripheral portion 22b of the upper surface portion 22 <the thickness B of the central portion 22a of the upper surface portion 22 is satisfied. The thickness of each part of the cap 21 has a correlation with the rigidity of each part, and the rigidity of the side surface part 23 <the rigidity of the peripheral part 22b of the upper surface part 22 <the rigidity of the central part 22a of the upper surface part 22 is established.
　図４に示すように、側面部２３の外周面２３ａの上端部には、鍔２７が設けられる。キャップ２１を孔５に打ち込んだとき、この鍔２７は、ザグリ部５ａの面取り部５ａ１の上に載る（図９（ｂ）参照）。側面部２３の外周面２３ａの下端部には、導入用テーパ面２３ｂが設けられる。孔５にキャップ２１を導入し易くするためである。 As shown in FIG. 4, a collar 27 is provided at the upper end portion of the outer peripheral surface 23 a of the side surface portion 23. When implanted cap 21 into the hole 5, the flange 27 rests on the chamfer 5a 1 of the counterbore portion 5a (see FIG. 9 (b)). A tapered surface 23b for introduction is provided at the lower end portion of the outer peripheral surface 23a of the side surface portion 23. This is to facilitate the introduction of the cap 21 into the hole 5.
　図３、図４に示すように、複数の突起２４（この実施形態では６つの突起２４）は、側面部２３の外周面２３ａに円周方向に等ピッチで互いに離れて配置される。突起２４は、側面部２３の外周面２３ａの上端部から軸方向の中間部まで存在する。突起２４は、必ずしも中間部まで存在しなくても、例えば上端部のみに存在していてもよい。突起２４は、導入用テーパ面２３ｂまで軸方向に延ばされることはなく、導入用テーパ面２３ｂよりも上方に存在する。図５に示すように、側面部２３の外周面２３ａのうち複数の突起２４が存在する範囲（図５において、α度×６個／３６０度で表される）は、３０％以下である。 3 and 4, the plurality of protrusions 24 (six protrusions 24 in this embodiment) are arranged on the outer peripheral surface 23a of the side surface portion 23 at a constant pitch in the circumferential direction. The protrusion 24 exists from the upper end portion of the outer peripheral surface 23a of the side surface portion 23 to the intermediate portion in the axial direction. The protrusion 24 does not necessarily exist up to the middle part, but may exist only at the upper end part, for example. The protrusion 24 does not extend in the axial direction to the introduction taper surface 23b, and exists above the introduction taper surface 23b. As shown in FIG. 5, the range in which the plurality of protrusions 24 exist on the outer peripheral surface 23 a of the side surface portion 23 (represented by α degrees × 6 pieces / 360 degrees in FIG. 5) is 30% or less.
　図５に示すように、突起２４の外周面２４ａは、側面部２３の外周面２３ａと同心円上に位置する。突起２４の外周面２４ａの外径Φ３は、孔５のザグリ部５ａの内径Φ１よりも大きい（図９（ａ）、（ｂ）参照）。このため、突起２４は、締め代をもって孔５のザグリ部５ａに打ち込まれる。図３に示すように、側面視において突起２４の形状は四角形であるが、特に限定されることはなく、三角形にすることもできる。各突起２４の下端部には、楔状の傾斜面２４ｂが形成される。 As shown in FIG. 5, the outer peripheral surface 24 a of the protrusion 24 is located concentrically with the outer peripheral surface 23 a of the side surface portion 23. The outer diameter Φ3 of the outer peripheral surface 24a of the protrusion 24 is larger than the inner diameter Φ1 of the counterbore part 5a of the hole 5 (see FIGS. 9A and 9B). For this reason, the protrusion 24 is driven into the counterbore part 5a of the hole 5 with an allowance. As shown in FIG. 3, the shape of the protrusion 24 is a quadrangle in a side view, but is not particularly limited, and may be a triangle. A wedge-shaped inclined surface 24 b is formed at the lower end of each protrusion 24.
　図７は、突起２４がある部分のキャップ２１の断面図を示し、図８は、図７のVIII部拡大図を示す。図７に示すように、突起２４がある部分の側面部２３の厚さＤ´も、周辺部２２ｂの厚さＣよりも薄い。図８の拡大図に示すように、鍔２７の上面には、断面円弧状の面取り部２７ａが設けられる。この面取り部２７ａは、上面部２２の平坦な上面２２１に連続する。 FIG. 7 shows a cross-sectional view of the cap 21 where the protrusions 24 are located, and FIG. 8 shows an enlarged view of the portion VIII of FIG. As shown in FIG. 7, the thickness D ′ of the side surface portion 23 where the protrusion 24 is present is also thinner than the thickness C of the peripheral portion 22b. As shown in the enlarged view of FIG. 8, a chamfered portion 27 a having a circular arc cross section is provided on the upper surface of the flange 27. The chamfer 27a is continuous to the flat top surface 22 1 of the upper surface portion 22.
　図９は、本実施形態のキャップ２１を孔５に打ち込むときの工程図を示す。図９では、ボルトが省略されているが、実際には孔５内にはボルト４が挿入されている。 FIG. 9 shows a process chart when the cap 21 of this embodiment is driven into the hole 5. Although the bolt is omitted in FIG. 9, the bolt 4 is actually inserted into the hole 5.
　まず、図９（ａ）に示すように、キャップ２１を孔５のザグリ部５ａに導入し、キャップ２１をザグリ部５ａ上に仮置きする。突起２４の外径Φ３は、ザグリ部５ａの内径Φ１よりも大きいので、突起２４がザグリ部５ａの面取り部５ａ1に引っ掛かった状態で、キャップ２１がザグリ部５ａ上に仮置きされる。キャップ２１の側面部２３の、突起２４よりも下方の部分が、ザグリ部５ａ内に挿入される。 First, as shown in FIG. 9A, the cap 21 is introduced into the counterbore part 5a of the hole 5, and the cap 21 is temporarily placed on the counterbore part 5a. Outer diameter Φ3 of the projection 24 is greater than the inner diameter Φ1 of the counterbore portion 5a, in a state where the protrusion 24 is caught by the chamfered portion 5a 1 of the counterbore portion 5a, the cap 21 is temporarily placed on the counterbore portion 5a. A portion of the side surface portion 23 of the cap 21 below the protrusion 24 is inserted into the counterbore portion 5a.
　次に、図９（ｂ）に示すように、キャップ２１をザグリ部５ａに打ち込む。仮置きした状態のキャップ２１の座りが安定しているので、キャップ２１を傾けて打ち込むことがない。キャップ２１の打ち込みは、キャップ２１の上に上下面が平らな当て金具を置き、この当て金具をプラスチックハンマで打つことによって行われるのが望ましいが、プラスチックハンマで直接キャップ２１を打ち込むこともできる。キャップ２１を打ち込んでも、キャップ２１は図示しないボルト４に当たることはなく、キャップ２１とボルト４との間にはすきまが空く。 Next, as shown in FIG. 9B, the cap 21 is driven into the counterbore part 5a. Since the cap 21 in the temporarily placed state is stable, the cap 21 is not tilted and driven. The cap 21 is preferably driven by placing a metal fitting with flat top and bottom surfaces on the cap 21 and driving the metal fitting with a plastic hammer. However, the cap 21 can be directly driven with a plastic hammer. Even if the cap 21 is driven, the cap 21 does not hit the bolt 4 (not shown), and a gap is left between the cap 21 and the bolt 4.
　キャップ２１は、上面部２２の上面２２１が案内レール１の上面１１と同一の高さになるまでザグリ部５ａに打ち込まれる。複数の突起２４は締め代をもっているので、複数の突起２４はザグリ部５ａの内面に押し付けられ、キャップ２１がザグリ部５ａに固定される。キャップ２１の打ち込みにより、キャップ２１の鍔２７は、ザグリ部５ａの面取り部５ａ１上に載る。 Cap 21 is driven into the counterbore portion 5a to the upper surface 22 1 of the upper surface portion 22 is flush with the upper surface 1 1 of the guide rail 1. Since the plurality of protrusions 24 have an allowance, the plurality of protrusions 24 are pressed against the inner surface of the counterbore part 5a, and the cap 21 is fixed to the counterbore part 5a. The implantation of the cap 21, the flange 27 of the cap 21 rests on the chamfered portion 5a 1 of the counterbore portion 5a.
　本実施形態のキャップ２１によれば、以下の効果をする。突起２４がザグリ部５ａの内面に押し付けられるとき、側面部２３の剛性が上面部２２の剛性よりも低いので、側面部２３が弾性変形する。側面部２３にばねの機能を持たせることにより、突起２４が削れてばりが発生するのを抑制でき、ザグリ部５ａへのキャップ２１の固定力も高めることができる。また、突起２４が側面部２３の外周面２３ａの上端部又は上端部から中間部までしか設けられていないので、キャップ２１を仮置きしたとき、キャップ２１の座りを安定させることができると共に、突起２４の下の側面部２３にもばねの機能を持たせることができる。 The cap 21 of the present embodiment has the following effects. When the protrusion 24 is pressed against the inner surface of the counterbore part 5a, the side part 23 is elastically deformed because the rigidity of the side part 23 is lower than the rigidity of the upper face part 22. By providing the side surface portion 23 with a spring function, it is possible to suppress the occurrence of flash due to the protrusion 24 being shaved, and it is possible to increase the fixing force of the cap 21 to the counterbore portion 5a. Further, since the protrusion 24 is provided only from the upper end portion or the upper end portion to the middle portion of the outer peripheral surface 23a of the side surface portion 23, when the cap 21 is temporarily placed, the sitting of the cap 21 can be stabilized and the protrusion The lower side surface portion 24 can also have a spring function.
　キャップ２１の上面部２２の中央部２２ａの剛性が周辺部２２ｂの剛性よりも高いので、キャップ２１の上面部２２の中央部２２ａの盛り上がりを抑制することができ、キャップ２１の上面部２２の上面２２１を平坦に保つことができる。また、側面部２３の弾性変形では足りない分を上面部２２の周辺部２２ｂの弾性変形で補うこともできる。 Since the rigidity of the central portion 22a of the upper surface portion 22 of the cap 21 is higher than the rigidity of the peripheral portion 22b, the rise of the central portion 22a of the upper surface portion 22 of the cap 21 can be suppressed, and the upper surface of the upper surface portion 22 of the cap 21 can be suppressed. 22 1 can be kept flat. Further, the amount of elastic deformation of the side surface portion 23 can be supplemented by elastic deformation of the peripheral portion 22b of the upper surface portion 22.
　上面部２２の周辺部２２ｂの剛性が側面部２３の剛性よりも高いので、キャップ２１の側面部２３の弾性変形を上面部２２に伝わりにくくすることができる。 Since the rigidity of the peripheral portion 22b of the upper surface portion 22 is higher than the rigidity of the side surface portion 23, the elastic deformation of the side surface portion 23 of the cap 21 can be made difficult to be transmitted to the upper surface portion 22.
　上面部２２の下面の周縁にリング状の溝２５を設けるので、キャップ２１の側面部２３の弾性変形を上面部２２により伝わりにくくすることができる。 Since the ring-shaped groove 25 is provided on the peripheral edge of the lower surface of the upper surface portion 22, the elastic deformation of the side surface portion 23 of the cap 21 can be made difficult to be transmitted by the upper surface portion 22.
　側面部２３にザグリ部５ａの面取り部５ａ１に載置される鍔２７を設けるので、キャップ２１上をキャリッジ２のシール１３が走行してもキャップ２１が沈むのを防止できる。 Since the side surface 23 provided with a flange 27 which is placed on the chamfered portion 5a 1 of the counterbore portion 5a, the upper cap 21 can be prevented from cap 21 traveling seal 13 of the carriage 2 is sink.
　鍔２７の上面に断面円弧状の面取り部２７ａを設けるので、キャップ２１上をキャリッジ２のシール１３が走行してもシール１３が鍔２７に引っ掛かるのを防止できる。 Since the chamfered portion 27a having a circular arc cross section is provided on the upper surface of the flange 27, it is possible to prevent the seal 13 from being caught by the flange 27 even when the seal 13 of the carriage 2 runs on the cap 21.
　側面部２３の外周面２３ａの全周のうち複数の突起２４が存在する範囲が３０％以下であるので、側面部２３を弾性変形させ易い。
（第２の実施形態） Since the range in which the plurality of protrusions 24 exist in the entire circumference of the outer peripheral surface 23a of the side surface portion 23 is 30% or less, the side surface portion 23 is easily elastically deformed.
(Second Embodiment)
　図１０は本発明の第２の実施形態のキャップ３１の底面図を示し、図１１は図１０のX－X線断面図を示す。第２の実施形態のキャップ３１も、円盤状の上面部２２と、上面部２２から垂下する円筒状の側面部２３と、側面部２３の外周面に設けられる複数の突起２４と、を備える。上面部２２は、厚さが厚い中央部２２ａと、中央部２２ａよりも厚さが薄い周辺部２２ｂと、を有する。上面部２２の周縁には、鍔２７が設けられる。側面部２３の外周面には、円周方向に等ピッチで複数の突起２４（この実施形態では６つの突起２４）が設けられる。第１の実施形態と同様に、突起２４は、側面部２３の外周面２３ａの上端部から軸方向の中間部まで存在する。 FIG. 10 is a bottom view of the cap 31 according to the second embodiment of the present invention, and FIG. 11 is a sectional view taken along line XX of FIG. The cap 31 of the second embodiment also includes a disk-shaped upper surface portion 22, a cylindrical side surface portion 23 depending from the upper surface portion 22, and a plurality of protrusions 24 provided on the outer peripheral surface of the side surface portion 23. The upper surface part 22 has a thick central part 22a and a peripheral part 22b thinner than the central part 22a. A collar 27 is provided on the periphery of the upper surface portion 22. A plurality of protrusions 24 (six protrusions 24 in this embodiment) are provided on the outer peripheral surface of the side surface portion 23 at equal pitches in the circumferential direction. Similar to the first embodiment, the protrusion 24 exists from the upper end portion of the outer peripheral surface 23 a of the side surface portion 23 to the intermediate portion in the axial direction.
　第２の実施形態では、上面部２２の中央部２２ａの厚さＢ、上面部２２の周辺部２２ｂの厚さＣ、側面部２３の厚さＤ（突起２４が無い部分の厚さＤ）の関係が第１の実施形態と異なる。具体的には、側面部２３の厚さＤは、上面部２２の中央部２２ａの厚さＢよりも小さく、周辺部２２ｂの厚さＣ以上に設定される。すなわち、Ｃ≦Ｄ＜Ｂの関係がある。 In the second embodiment, the thickness B of the central portion 22 a of the upper surface portion 22, the thickness C of the peripheral portion 22 b of the upper surface portion 22, and the thickness D of the side surface portion 23 (thickness D of the portion without the protrusion 24). The relationship is different from that of the first embodiment. Specifically, the thickness D of the side surface portion 23 is smaller than the thickness B of the central portion 22a of the upper surface portion 22, and is set to be equal to or greater than the thickness C of the peripheral portion 22b. That is, there is a relationship of C ≦ D <B.
　また、上面部２２の下面の周縁（言い換えれば周辺部２２ｂの周縁）には、リング状の溝２５が設けられておらず、周辺部２２ｂと側面部２３とは断面円弧状の連結部３２で連結される。 Further, the peripheral edge of the lower surface of the upper surface portion 22 (in other words, the peripheral edge of the peripheral portion 22b) is not provided with a ring-shaped groove 25, and the peripheral portion 22b and the side surface portion 23 are connected by a connecting portion 32 having an arcuate cross section. Connected.
　上面部２２の中央部２２ａ、周辺部２２ｂ、側面部２３のその他の構成は、第１の実施形態のキャップ２１と略同一であるので、同一の符号を附してその詳しい説明を省略する。 Other configurations of the central portion 22a, the peripheral portion 22b, and the side surface portion 23 of the upper surface portion 22 are substantially the same as those of the cap 21 of the first embodiment, so the same reference numerals are given and detailed descriptions thereof are omitted.
　第２の実施形態のキャップ３１によれば、以下の効果をする。突起２４がザグリ部５ａの内面に押し付けられるとき、側面部２３の厚さＤが上面部２２の中央部２２ａの厚さＢよりも薄いので、側面部２３が弾性変形する。側面部２３にばねの機能を持たせることにより、突起２４が削れてばりが発生するのを抑制できる。 The cap 31 of the second embodiment has the following effects. When the protrusion 24 is pressed against the inner surface of the counterbore part 5a, the side face 23 is elastically deformed because the thickness D of the side face 23 is thinner than the thickness B of the central part 22a of the upper face 22. By providing the side surface portion 23 with a spring function, it is possible to suppress the occurrence of flash due to the protrusion 24 being shaved.
　キャップ３１の上面部２２の中央部２２ａの厚さＢが周辺部２２ｂの厚さＣよりも厚いので、キャップ３１の上面部２２の中央部２２ａの盛り上がりを抑制することができる。 Since the thickness B of the central portion 22a of the upper surface portion 22 of the cap 31 is thicker than the thickness C of the peripheral portion 22b, the rising of the central portion 22a of the upper surface portion 22 of the cap 31 can be suppressed.
　側面部２３の厚さＤが上面部２２の周辺部２２ｂの厚さＣ以上であるので、ばねの機能を持たせた側面部２３の弾性変形を抑制することができ、これにより抜去力及び保持力が向上する。抜去力は、キャップ３１の抜けにくさを表すもので、キャップ３１の抜き取り試験を行うことで測定される。保持力は、ザグリ部５ａへのキャップ３１の落ち込みにくさを表すもので、キャップ３１の押し込み試験を行うことで測定される。キャップ３１の抜去力及び保持力を向上することで、高温環境や低温環境などの耐環境性が高いキャップにすることができる。 Since the thickness D of the side surface portion 23 is equal to or greater than the thickness C of the peripheral portion 22b of the upper surface portion 22, it is possible to suppress elastic deformation of the side surface portion 23 having a spring function, thereby removing force and holding. Power is improved. The extraction force represents the difficulty in removing the cap 31 and is measured by performing a removal test of the cap 31. The holding force represents the difficulty of the cap 31 dropping into the counterbore part 5a, and is measured by performing an indentation test of the cap 31. By improving the removal force and holding force of the cap 31, a cap having high environmental resistance such as a high temperature environment and a low temperature environment can be obtained.
　上面部２２の下面の周縁にリング状の溝２５（図６参照）が設けられておらず、円弧状の連結部３２が設けられるので、側面部２３の変形をより抑制することができ、これにより抜去力及び保持力が向上する。
（第３の実施形態） Since the ring-shaped groove 25 (see FIG. 6) is not provided at the periphery of the lower surface of the upper surface portion 22 and the arc-shaped connecting portion 32 is provided, the deformation of the side surface portion 23 can be further suppressed. This improves the removal force and holding force.
(Third embodiment)
　図１２は第３の実施形態のキャップ４１の上面側斜視図を示し、図１３はキャップ４１の底面側斜視図を示す。キャップ４１も、円盤状の上面部２２と、上面部２２から垂下する円筒状の側面部２３と、側面部２３の外周面に設けられる複数の突起２４と、を備える。 FIG. 12 shows a top perspective view of the cap 41 of the third embodiment, and FIG. 13 shows a bottom perspective view of the cap 41. The cap 41 also includes a disk-shaped upper surface portion 22, a cylindrical side surface portion 23 depending from the upper surface portion 22, and a plurality of protrusions 24 provided on the outer peripheral surface of the side surface portion 23.
　図１４はキャップ４１の底面図を示し、図１５は図１４のXIV－XIV線断面図を示す。このキャップ４１では、抜去力及び保持力をより大きくするために、突起２４の面積（高さ×幅）を第１及び第２の実施形態のキャップ２１，３１よりも大きくしている。突起２４は、側面部２３の外周面２３ａ の上端部から軸方向の中間部まで存在する。上面部２２の上面２２１から突起２４の下端（すなわち、突起２４の、ザグリ部５ａに接触する部分の下端）までの突起高さＥは、キャップ４１の全高さＦの１／２以上、この実施形態では、約２／３に設定される。ただし、突起２４は、導入用テーパ面２３ｂまで軸方向に延びることはなく、導入用テーパ面２３ｂよりも上方に存在する。 14 shows a bottom view of the cap 41, and FIG. 15 shows a cross-sectional view taken along the line XIV-XIV in FIG. In this cap 41, the area (height × width) of the protrusion 24 is made larger than those of the caps 21 and 31 of the first and second embodiments in order to increase the removal force and the holding force. The protrusion 24 exists from the upper end portion of the outer peripheral surface 23a of the side surface portion 23 to the intermediate portion in the axial direction. The lower end of the protrusion 24 from the upper surface 22 1 of the upper surface portion 22 (i.e., projection 24, the lower end of the portion in contact with the counterbore portion 5a) projection height E of the far, more than half of the total height F of the cap 41, the In the embodiment, it is set to about 2/3. However, the protrusion 24 does not extend in the axial direction to the introduction taper surface 23b and exists above the introduction taper surface 23b.
　突起２４は、円周方向に等ピッチで複数、この実施形態では６つ設けられる。側面部２３の外周面の全周のうち６つの突起２４がザグリ部５ａに接触する総範囲（図１３のクロスハッチングで示す部分）は、２０％以上６０％以下、望ましくは２０％以上５０％以下である。 A plurality of protrusions 24 are provided at equal pitches in the circumferential direction, and six in this embodiment. The total range (the portion indicated by cross-hatching in FIG. 13) of the six protrusions 24 in contact with the counterbore portion 5a in the entire outer periphery of the side surface portion 23 is 20% or more and 60% or less, preferably 20% or more and 50%. It is as follows.
　第２の実施形態のキャップ３１と同様に、上面部２２は、厚さが厚い中央部２２ａと、中央部２２ａよりも厚さが薄い周辺部２２ｂと、を有する。上面部２２の周縁には、鍔２７が設けられる。側面部２３の厚さＤは、上面部２２の中央部２２ａの厚さＢよりも小さく、周辺部２２ｂの厚さＣ以上に設定される。すなわち、Ｃ≦Ｄ＜Ｂの関係がある。周辺部２２ｂと側面部２３とは断面円弧状の連結部３２で連結される。 Similarly to the cap 31 of the second embodiment, the upper surface portion 22 has a thick central portion 22a and a peripheral portion 22b thinner than the central portion 22a. A collar 27 is provided on the periphery of the upper surface portion 22. The thickness D of the side surface portion 23 is smaller than the thickness B of the central portion 22a of the upper surface portion 22, and is set to be equal to or greater than the thickness C of the peripheral portion 22b. That is, there is a relationship of C ≦ D <B. The peripheral portion 22b and the side surface portion 23 are connected by a connecting portion 32 having an arc cross section.
　上面部２２の中央部２２ａ、周辺部２２ｂ、側面部２３のその他の構成は、第１の実施形態のキャップ２１と略同一であるので、同一の符号を附してその詳しい説明を省略する。 Other configurations of the central portion 22a, the peripheral portion 22b, and the side surface portion 23 of the upper surface portion 22 are substantially the same as those of the cap 21 of the first embodiment, so the same reference numerals are given and detailed descriptions thereof are omitted.
　第３の実施形態のキャップ４１によれば、以下の効果を奏する。突起２４の高さＥがキャップ４１の全高さＦの１／２以上であるので、突起２４がザグリ部５ａに接触する面積を大きくすることができ、これにより抜去力及び保持力を大きくすることができる。 The cap 41 of the third embodiment has the following effects. Since the height E of the protrusion 24 is ½ or more of the total height F of the cap 41, the area where the protrusion 24 contacts the counterbore part 5a can be increased, thereby increasing the removal force and holding force. Can do.
　側面部２３の外周面の全周のうち突起２４がザグリ部５ａに接触する総範囲が２０％以上６０％以下であるので、突起２４がザグリ部５ａに接触する面積を大きくすることができ、これにより抜去力及び保持力を大きくすることができる。なお、総範囲が２０％未満であると、必要な抜去力及び保持力を確保できないという問題がある。また、総範囲が６０％を超えると、突起２４が削れてばりが発生するという問題がある。 Since the total range in which the protrusion 24 contacts the counterbore part 5a is 20% or more and 60% or less in the entire circumference of the outer peripheral surface of the side surface part 23, the area where the protrusion 24 contacts the counterbore part 5a can be increased. Thereby, extraction force and holding force can be enlarged. When the total range is less than 20%, there is a problem that necessary extraction force and holding force cannot be secured. Further, when the total range exceeds 60%, there is a problem that the protrusion 24 is scraped and a flash is generated.
　なお、本発明は上記実施形態に限られることはなく、本発明の要旨を変更しない範囲で種々に変更可能である。 Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
　キャップの形状は、本発明の要旨を変更しない範囲で他の形状を採用することができる。例えば、突起の個数は２個以上の任意の個数を設定することができるし、突起の形状は四角形以外に円形、三角形、五角形等を採用することができる。 As the shape of the cap, other shapes can be adopted as long as the gist of the present invention is not changed. For example, the number of protrusions can be set to an arbitrary number of two or more, and the shape of the protrusion can be a circle, a triangle, a pentagon, or the like other than a quadrangle.
　キャップが小さい場合、側面部の外周面の全周のうち複数の突起が存在する範囲を５０％程度にすることもできる。 When the cap is small, the range in which a plurality of protrusions exist in the entire circumference of the outer peripheral surface of the side surface portion can be reduced to about 50%.
　キャップの材質は樹脂に限られることはなく、ステンレス、アルミニウム、真鍮等の金属でもよい。 The material of the cap is not limited to resin, but may be metal such as stainless steel, aluminum, brass.
　本明細書は、２０１６年３月２５日出願の特願２０１６－０６１０７７及び２０１７年３月２３日出願の特願２０１７－０５７６０３に基づく。この内容はすべてここに含めておく。 This specification is based on Japanese Patent Application No. 2016-061077 filed on Mar. 25, 2016 and Japanese Patent Application No. 2017-057603 filed on Mar. 23, 2017. All this content is included here.
　１…案内レール、５…締結部材挿入用の孔、５ａ１…締結部材挿入用の孔のザグリ部の面取り部、２１，３１，４１…キャップ、２２…上面部、２２ａ…中央部、２２ｂ…周辺部、２３…側面部、２３ａ…側面部の外周面、２４…突起、２５…リング状の溝、２７…鍔、２７ａ…鍔の面取り部、Ｂ…上面部の中央部の厚さ（上面部の厚さ）、Ｃ…上面部の周辺部の厚さ、Ｄ…突起間における側面部の厚さ DESCRIPTION OF SYMBOLS 1 ... Guide rail, 5 ... Hole for fastening member insertion, 5a 1 ... Chamfering part of counterbore part of hole for fastening member insertion, 21, 31, 41 ... Cap, 22 ... Upper surface part, 22a ... Center part, 22b ... Peripheral part, 23 ... side part, 23a ... outer peripheral surface of side part, 24 ... projection, 25 ... ring-shaped groove, 27 ... ridge, 27a ... chamfered part of ridge, B ... thickness of central part of upper surface part (upper surface Part thickness), C ... thickness of peripheral part of upper surface part, D ... thickness of side face part between projections

Claims (8)

  1. 　運動案内装置の案内レールの締結部材挿入用の孔を塞ぐためのキャップであって、
    　円盤状の上面部と、
    　前記上面部から垂下する円筒状の側面部と、
    　前記側面部の外周面に設けられる複数の突起と、を備え、
    　前記複数の突起は、前記側面部の前記外周面に円周方向に互いに離れると共に、前記外周面の上端部又は前記上端部から軸方向の中間部まで存在し、
    　前記突起間における前記側面部の厚さが、前記上面部の厚さよりも薄い運動案内装置用のキャップ。     A cap for closing a hole for inserting a fastening member of a guide rail of a motion guide device,
    A disc-shaped upper surface,
    A cylindrical side surface depending from the upper surface,
    A plurality of protrusions provided on the outer peripheral surface of the side portion,
    The plurality of protrusions are circumferentially separated from the outer peripheral surface of the side surface portion, and exist from the upper end portion of the outer peripheral surface or the upper end portion to the intermediate portion in the axial direction.
    A cap for a motion guide device in which a thickness of the side surface portion between the protrusions is smaller than a thickness of the upper surface portion.
  2. 　前記上面部は、厚さが厚い中央部と、前記中央部よりも厚さが薄い周辺部と、を有することを特徴とする請求項１に記載の運動案内装置用のキャップ。 The motion guide device cap according to claim 1, wherein the upper surface portion has a thick central portion and a peripheral portion thinner than the central portion.
  3. 　前記突起間における前記側面部の厚さが、前記上面部の前記中央部の厚さよりも薄いことを特徴とする請求項２に記載の運動案内装置用のキャップ。 The cap for a motion guide device according to claim 2, wherein a thickness of the side surface portion between the protrusions is thinner than a thickness of the central portion of the upper surface portion.
  4. 　前記側面部の前記外周面の前記上端部には、前記締結部材挿入用の孔の面取り部に載置される鍔が設けられることを特徴とする請求項１ないし３のいずれか１項に記載の運動案内装置用のキャップ。 4. The flange according to claim 1, wherein a flange placed on the chamfered portion of the hole for inserting the fastening member is provided at the upper end portion of the outer peripheral surface of the side surface portion. 5. Cap for the motion guide device.
  5. 　前記鍔の上面には、断面円弧状の面取り部が設けられることを特徴とする請求項４に記載の運動案内装置用のキャップ。 The movement guide device cap according to claim 4, wherein a chamfered portion having a circular arc cross section is provided on an upper surface of the bowl.
  6. 　前記突起間における前記側面部の厚さが、前記上面部の前記周辺部の厚さ以上であること特徴とする請求項３に記載の運動案内装置用のキャップ。 The motion guide device cap according to claim 3, wherein a thickness of the side surface portion between the protrusions is equal to or greater than a thickness of the peripheral portion of the upper surface portion.
  7. 　前記上面部の上面からの前記突起の下端までの突起高さが、前記キャップの全高さの１／２以上であることを特徴とする請求項１ないし６のいずれか１項に記載の運動案内装置用のキャップ。 7. The motion guide according to claim 1, wherein a projection height from the upper surface of the upper surface portion to a lower end of the projection is ½ or more of a total height of the cap. Cap for equipment.
  8. 　前記側面部の前記外周面の全周のうち前記複数の突起が前記締結部材挿入用の孔に接触する総範囲が２０％以上６０％以下であることを特徴とする請求項１ないし７のいずれか１項に記載の運動案内装置用のキャップ。 8. The total range in which the plurality of protrusions are in contact with the fastening member insertion hole in the entire circumference of the outer peripheral surface of the side surface portion is 20% or more and 60% or less. A cap for the motion guide device according to claim 1.
PCT/JP2017/011827 2016-03-25 2017-03-23 Cap for movement guide device WO2017164330A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112017001548.0T DE112017001548B4 (en) 2016-03-25 2017-03-23 Guide cap
US16/082,405 US10371203B2 (en) 2016-03-25 2017-03-23 Cap for motion guide apparatus
CN201780016671.9A CN108779799B (en) 2016-03-25 2017-03-23 Cover for motion guide device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2016-061077 2016-03-25
JP2016061077 2016-03-25
JP2017057603A JP6302114B2 (en) 2016-03-25 2017-03-23 Cap for motion guide device
JP2017-057603 2017-03-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002048138A (en) * 2000-08-01 2002-02-15 Nippon Thompson Co Ltd Buried cap screw for linear guide unit
JP2007113671A (en) * 2005-10-20 2007-05-10 Nsk Ltd Linear guide bearing device and rail cap
JP2007192282A (en) * 2006-01-18 2007-08-02 Nippon Thompson Co Ltd Linear motion guide unit having plugs in track rail
CN202971574U (en) * 2012-09-28 2013-06-05 全球传动科技股份有限公司 Liner sliding rail, bolt hole cover of liner sliding rail and sliding rail body
JP2014137140A (en) * 2013-01-15 2014-07-28 Chokutoku Kagi Kofun Yugenkoshi Bolt hole cap
TWM503494U (en) * 2015-01-29 2015-06-21 Ama Tech Corp Linear sliding rail sealing hole structure and sealing plug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002048138A (en) * 2000-08-01 2002-02-15 Nippon Thompson Co Ltd Buried cap screw for linear guide unit
JP2007113671A (en) * 2005-10-20 2007-05-10 Nsk Ltd Linear guide bearing device and rail cap
JP2007192282A (en) * 2006-01-18 2007-08-02 Nippon Thompson Co Ltd Linear motion guide unit having plugs in track rail
CN202971574U (en) * 2012-09-28 2013-06-05 全球传动科技股份有限公司 Liner sliding rail, bolt hole cover of liner sliding rail and sliding rail body
JP2014137140A (en) * 2013-01-15 2014-07-28 Chokutoku Kagi Kofun Yugenkoshi Bolt hole cap
TWM503494U (en) * 2015-01-29 2015-06-21 Ama Tech Corp Linear sliding rail sealing hole structure and sealing plug

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