JP2015222112A - Rolling bearing guide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolling bearing guide device which can make rolling bodies lubricate for a long period of time, and alleviates a time and labor of maintenance.SOLUTION: In a rolling bearing guide device 1 which has a guide rail 2, a slider main body 8, rolling bodies 16, and end caps 9a, 9b which form direction conversion paths 15a to 15d for converting moving directions of the rolling bodies 16, the rolling bearing guide device also has: a lubrication member 14 which is arranged between the slider main body 8 and the end caps 9a, 9b, and whose one portion is exposed in the direction conversion paths 15a to 15d, lubrication vessels 10a, 10b which are arranged while adjoining the end caps 9a, 9b, and an induction member 37 which extends toward the lubrication member 14 from the lubrication vessels 10a, 10b in order to guide the lubricants in the lubricant vessels 10a, 10b to the lubrication member 14, and contacts with the lubrication member 14 at its tip part. The air hole density of the tip part of the induction member 37 is higher than the air hole density of a part other than the tip part.

Description

  The present invention relates to a rolling bearing guide device used in various robots, transfer devices, semiconductor manufacturing devices, and the like.

  Conventionally, as a rolling bearing guide device, a linear motion guide device having a linearly extending guide rail and a curved motion guide device having a curved guide rail are known.

  The linear motion guide device includes, for example, a linear guide rail and a slider straddled over the guide rail so as to be relatively movable in the longitudinal direction. The slider includes a slider main body and end caps at both ends that become the head or tail when the slider moves. A large number of rolling elements roll on a rolling path between the guide rail and the slider body while circulating through a circulation path formed in the slider, thereby realizing a smooth relative movement between the guide rail and the slider.

  The curved motion guide device includes a curved guide rail such as a ring, a slider configured to slide on the curved guide rail, and a rolling element.

  In the rolling bearing guide device as described above, the return guide constituting the inner peripheral surface on the slider body side of the direction change path of the end cap is provided with a through hole penetrating from the slider body side to the direction change path side, and the slider of the return guide There is one that supplies a lubricant into a direction change path through the through hole from a lubricant supply path provided on the main body side (see, for example, Patent Document 1).

  Some end caps are provided with a member provided with a groove for oil supply on the slider body side, and a lubricant is supplied into the direction change path through the oil supply groove (see, for example, Patent Document 2).

JP 2008-291938 A JP 2010-185582 A

  However, since the inventions described in Patent Document 1 and Patent Document 2 are merely open to the direction change path, the lubricant flows out in a large amount in the initial stage when the lubricant is supplied from the outside. There was a risk that it would be difficult to lubricate the rolling elements over a long period of time. In addition, this may cause frequent maintenance such as replenishment of lubricant.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a rolling bearing guide device that can lubricate rolling elements over a long period of time and reduce maintenance work.

In order to solve the above problems, the present invention
A guide rail,
A slider body that slides on the guide rail;
A rolling element that rolls between the slider body and the guide rail as the slider body slides;
In the rolling bearing guide device having an end cap that is attached to an end surface that becomes the head or tail of the slider body at the time of sliding and forms a direction change path that changes the moving direction of the rolling element,
A lubricating member disposed between the slider body and the end cap and partially exposed in the direction change path;
A lubricant container that holds the lubricant and is disposed adjacent to the end cap;
In order to guide the lubricant in the lubricant container to the lubrication member, the guide member extends from the lubricant container toward the lubrication member, and a leading end portion is in contact with the lubrication member.
The guide member provides a rolling bearing guide device in which a hole density at the tip portion is higher than a hole density other than the tip portion.

  According to the present invention, it is possible to provide a rolling bearing guide device that makes it possible to lubricate rolling elements over a long period of time and reduce maintenance work.

FIG. 1 is a perspective view showing a linear guide apparatus according to the first embodiment of the present invention. FIG. 2 is a view showing an end cap, a lubricating member, a lubricant container, and a side seal of the linear guide device according to the first embodiment of the present invention, and FIG. 2 (a) is an end cap on the side facing the slider body. A front view and FIG.2 (b) are the sectional views on the AA line of Fig.2 (a). FIG. 3 is a view showing an end cap of the linear guide device according to the first embodiment of the present invention, FIG. 3 (a) is a front view of the slider body side, FIG. 3 (b) is FIG. FIG. 3C is a cross-sectional view taken along line B-B shown in FIG. 3C, and FIG. 3C is an external view showing a surface opposite to the slider body. FIG. 4 is a view showing a lubricating member of the linear motion guide device according to the first embodiment of the present invention. FIG. 4 (a) is a front side facing the end cap, and FIG. 4 (b) is FIG. CC sectional view shown to a), FIG.4 (c) is a bottom view of a lubricating member. FIG. 5 is a view showing the lubricant container of the linear guide apparatus according to the first embodiment of the present invention, FIG. 5 (a) is a front view of the lubricant container facing the side seal side, and FIG. 5 (b). FIG. 3 is a front view of a lubricant-impregnated member housed in a lubricant container. FIG. 6 is a view showing an end cap and a lubricating member of the linear motion guide device according to the second embodiment of the present invention in the same manner as in FIG. 2, and FIG. 6 (a) is a front view of the side facing the slider body, 6B is a cross-sectional view taken along line AA in FIG. 6A, and FIG. 6C is a partial cross-sectional view taken along line BB in FIG. 6B. FIG. 7 is a view showing an end cap and a lubricating member in the same manner as FIG. 2 of the linear guide apparatus according to the third embodiment of the present invention. FIG. 7A is a front view of the side facing the slider body, FIG.7 (b) is the sectional view on the AA line of Fig.7 (a).

(First embodiment)
A linear guide apparatus according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the linear motion guide device 1 includes a long and narrow rectangular guide rail 2 and a slider 3 straddling the guide rail 2 so as to be movable in the longitudinal direction of the guide rail 2. Yes. The extending direction of the guide rail 2 is the X-axis direction, the lateral width direction of the guide rail 2 is the Y-axis direction, and the direction perpendicular to the X-axis direction and the Y-axis direction is the Z-axis direction.

  The guide rail 2 is made of metal, and on both sides thereof, there are corner rolling grooves 5a and 5b and side rolling grooves 6a and 6b having a substantially circular cross section extending in the sliding direction (X-axis direction) of the slider 3. Is formed. Escape grooves are formed at the bottoms of the side rolling grooves 6a and 6b. The guide rail 2 can be fixed to an arbitrary attached portion (not shown) by a bolt 7 that passes through the bolt hole 4.

  The slider 3 includes a metallic slider body 8, end caps 9a and 9b attached to the front and rear of the slider body 8, and lubricant containers 10a and 10b attached to the outside of the end caps 9a and 9b. It is comprised from the side seals 11a and 11b attached to the outer side of the lubricant containers 10a and 10b. Each of the side seals 11 a and 11 b is formed of an elastic body and has a lip portion that is in sliding contact with the guide rail 2, and prevents foreign matter from entering between the slider 3 and the guide rail 2.

  FIG. 2 is a view showing the end cap 9b, the lubricating member 14, the lubricant container 10b, and the side seal 11b of the linear guide apparatus according to the first embodiment of the present invention. FIG. 2A shows a surface on the slider body 8 side, and FIG. 2B shows a cross section taken along line AA shown in FIG. Since the end cap 9a side has the same configuration as the end cap 9b side described below, description thereof is omitted.

  As shown in FIG. 2 (a), the end cap 9b is drooping toward the mounting portion side so as to straddle the guide rail from the body portion 12 and the body portion 12 formed in a substantially square column shape in the Y-axis direction. Leg portions 13a and 13b. A lubrication member 14 made of a sintered material is disposed on the slider body 8 side of the end cap 9b. The sintered material of the lubricating member 14 is preferably formed to be porous. The lubricating member 14 according to the first embodiment is integrally composed of a body portion 22 and leg portions 23a and 23b. As the material of the lubricating member 14, a porous polymer material (plastic, elastomer, rubber) can be used. By the lubricating member 14, the same amount of lubricant as that supplied to the rolling element 16 is guided to the contact portion with the rolling element 16. In addition, the trunk | drum 22 and the leg parts 23a and 23b of the lubricating member 14 may be shape | molded as a different body, and may be arrange | positioned so that it may mutually contact.

  On the surface of the end cap 9b facing the slider body 8, the direction change paths 15a and 15b are provided at the boundary portion between the body portion 12 and the leg portion 13a of the end cap 9b and at the boundary portion between the body portion 12 and the leg portion 13b. Are formed respectively. Further, the direction change paths 15c and 15d are formed in the leg portions 13a and 13b below the direction change paths 15a and 15b, respectively. The direction change paths 15a to 15d are arc-shaped curved grooves formed on the surface of the end cap 9b facing the slider main body 8, and convex curves described later of the leg portions 23a and 23b of the lubricating member 14 facing the curved grooves. And is composed of a surface. Although the curved shape of the convex curved surface of the lubricating member 14 is not shown, it is formed facing the arc-shaped curved groove of the end cap 9b.

  The direction change paths 15a to 15d are formed to be curved in an arc shape, and roll between the slider body 8 and the corner rolling grooves 5a and 5b and the side rolling grooves 6a and 6b of the guide rail 2. The moving direction of the moving body 16 is changed by 180 degrees, and the rolling body 16 is circulated together with a circulation path (not shown) formed in the slider body 8. 2A shows a state in which the rolling elements 16 are accommodated in the direction change paths 15a and 15c, but the rolling elements 16 are similarly accommodated in the direction change paths 15b and 15d. The rolling element 16 changes direction while rolling in contact with the arcuate curved groove of the end cap 9b and the convex curved surface of the lubricating member 14 in the direction changing paths 15a to 15d.

  In order to fix the end cap 9b, the lubricant container 10b, and the side seal 11b to the slider body 8 with screws between the direction change path 15a and the direction change path 15c and between the direction change path 15b and the direction change path 15d. Through-hole portions 17a and 17b are respectively formed. The through-hole portions 17a and 17b form a hole penetrating in the X-axis direction, and the hole ends project in a cylindrical shape toward the slider body 8 side. The cylindrical portion facilitates the positioning of the end cap 9b by fitting with a counterbore hole (not shown) formed in the opening of the screw hole formed in the slider body 8.

  As shown in FIG. 2B, a lubricant container 10b for storing a lubricant is arranged on the side of the end cap 9b opposite to the slider body 8. A side seal 11b is disposed on the opposite side of the lubricant container 10b from the end cap 9b.

  The lubricant container 10b includes a body 33 of a lubricant impregnated member 32 (see FIG. 5B) impregnated with a lubricant, and a guide member 37 for guiding the lubricant of the lubricant impregnated member 32 to the lubricant member 14. Is housed at one end. The guide member 37 is made of, for example, a sintered material, and is inserted into the through hole 20 (see FIG. 3) formed in the body portion 12 of the end cap 9b. The rear end portion is accommodated in the lubricant container 10b, and the container 10b is disposed in contact with the body 33 of the lubricant-impregnated member 32. Thereby, the lubricant impregnated in the lubricant impregnated member 32 is supplied to the body portion 22 of the lubricant member 14 through the guide member 37 by capillary action. The sintered material of the induction member 37 is preferably formed to be porous. Further, it is desirable that the tip end portion of the guide member 37 has a lower hole density than the lubricating member 14. As described above, excessive supply of the lubricant to the rolling elements can be suppressed while smoothly guiding the lubricant to the lubricant member 14.

  Here, the guide member 37 according to the first embodiment is a porous material from the front end side contacting the body portion 22 of the lubricating member 14 to the rear end portion contacting the body portion 33 of the lubricant impregnated member 32 in the lubricant container 10b. It is comprised so that a hole density may become low sequentially. A lower hole density contains more lubricant, and a higher hole density has a lower lubricant content. Therefore, when the lubricant is supplied to the rolling elements 16 via the convex curved surfaces of the leg portions 23a and 23b of the lubricating member 14 forming the direction changing paths 15a to 15d, a large amount of the lubricant is once supplied from the porous guide member 37. Lubricant is not supplied, and the guide member 37 can always supply an appropriate amount of lubricant without depleting the lubricant, and the frequency of supplying the lubricant to the lubricant container 10b can be kept low. .

  The gradient of the hole density (density gradient) of the guide member 37 may be a continuous gradient with respect to the integrated guide member 37, and the gradient may be changed stepwise from high to middle to low in the axial direction. It may be. In addition, the guide member 37 may simply be configured such that the hole density at the tip is higher than the hole density other than at the tip. In addition, the guide member 37 is composed of, for example, three guide member pieces having different hole densities, and the three guide member pieces have a gradient of high, medium, and low from the tip side (the lubricating member 14 side). You may arrange and join. Furthermore, as another modification, the supply amount of the lubricant can be adjusted also by arranging the thickness of the guide member pieces having different hole densities, for example, by changing the outer diameter or the axial length, Thereby, it can respond to various variations.

  As the porous material used as the material of the lubricating member 14, a polymer material is suitable, and polyolefin (polypropylene (PP), polyethylene (PE)) is particularly preferable. Since polyolefin is highly insulating, static electricity that may be generated by friction between the direction change paths 15 a to 15 d and the rolling elements 16 when the slider 3 slides can be insulated by the lubricating member 14. In addition, since the polyolefin type has high mechanical strength, it is less likely to be damaged even if the rolling element 16 contacts. The lubricating oil used as the lubricant is preferably mineral oil, and the grease is preferably lithium or urea.

  As described above, the lubricant supplied to the body portion 22 of the lubricating member 14 is applied to the rolling elements 16 that are in contact with the leg portions 23 a and 23 b of the lubricating member 14. By utilizing the capillary phenomenon, the lubricant can be directly supplied to the rolling elements 16 regardless of the posture of the linear motion guide device 1. Further, when the capillary phenomenon is not used, the lubricant in the lubricant container 10b and the end cap 9b is temporarily biased to one side by the movement of the slider 3, and the lubricant does not easily flow from the lubricant container 10b to the end cap 9b. This can be prevented by utilizing the capillary phenomenon. When the lubricant stored in the lubricant container 10b needs to be replenished, the side seal 11b can be removed and replenished.

  FIG. 3 is a view showing the end cap 9b of the linear guide apparatus 1 according to the first embodiment of the present invention. 3A shows the surface on the slider body 8 side, FIG. 3B shows a cross section taken along line BB shown in FIGS. 3A and 3C, and FIG. 3C shows the slider body. 8 shows the outer end surface of the end cap 9b opposite to the end plate 8b.

  Further, the end cap 9b, the lubricant container 10b, and the side seal 11b (FIG. 1) are screwed to the slider body 8 (FIG. 1) on both the left and right sides of the through-hole 20 for inserting the guide member 37 (FIG. 2). Are formed so as to penetrate the slider 3 in the sliding direction.

On the surface of the end cap 9b facing the slider body 8 of the body portion 12 and the leg portions 13a, 13b, the lubricating member accommodating portion 18 that is recessed in accordance with the shape of the lubricating member 14 is accommodated. Is formed.
The lubricating member accommodating portion 18 is formed with concave portions 19a to 19d into which convex portions 24a to 24d (see FIG. 4) described later formed on the lubricating member 14 are fitted.

  FIG. 4 is a diagram showing the lubricating member 14 of the linear guide apparatus 1 according to the first embodiment of the present invention. The lubrication member 14 is disposed between the slider body 8 and the end cap 9b. 4 (a) shows the surface facing the end cap 9b, FIG. 4 (b) shows the cross-section along line CC shown in FIG. 4 (a), and FIG. 4 (c) shows the bottom surface. Yes.

  As described above, the lubricating member 14 is formed of the trunk portion 22 and the leg portions 23a and 23b. The trunk portion 22 is formed in a plate shape, and the leg portions 23a and 23b have a semi-cylindrical shape as if the cylinder was divided in half along the center line, as can be seen from FIG. A curved surface (convex curved surface) is formed to face the end cap 9b side. The rolling element 16 changes direction while rolling in contact with the convex curved surfaces of the semi-cylindrical legs 23a and 23b in the direction changing paths 15a to 15d. Thus, the leg portions 23 a and 23 b serve as a return guide for changing the direction of the rolling element 16 and also serve to directly supply the lubricant impregnated in the leg portions 23 a and 23 b to the rolling element 16.

  Protrusions 24 a and 24 b protruding in a columnar shape are formed in the vicinity of both ends of the surface of the body 22 of the lubricating member 14 facing the end cap 9 b. Further, convex portions 24c and 24d projecting in a columnar shape are formed at substantially the center of the surfaces of the leg portions 23a and 23b of the lubricating member 14 facing the end cap 9b. The convex portions 24a to 24d are fitted into the concave portions 19a to 19d formed in the lubricating member accommodating portion 18 of the end cap 9b, respectively. Thereby, positioning of the lubricating member 14 becomes easy. In addition, body screw holes 25 a and 25 b that penetrate in the sliding direction of the slider 3 are formed in the body portion 22 of the lubricating member 14.

  FIG. 5 is a diagram illustrating the lubricant container 10b in the linear motion guide device 1 according to the first embodiment of the present invention. FIG. 5A shows the outer end surface of the lubricant container 10b facing the side seal 11b, and FIG. 5B shows the lubricant-impregnated member 32 accommodated in the lubricant container 10b. The lubricant container 10 b includes a trunk portion 26 that extends in the lateral width direction of the guide rail 2 and leg portions 27 a and 27 b that hang down from both ends of the trunk portion 26 toward the guide rail 2. The lubricant container 10b has a box shape opened to the side seal 11b side, and a housing portion 28 for the lubricant impregnated member 32 is formed.

  The leg portions 27a and 27b of the lubricant container 10b are formed with substantially cylindrical leg cylindrical portions 29a and 29b, respectively. The leg cylindrical portions 29a and 29b are for fixing the end cap 9b, the lubricant container 10b and the side seal 11b to the slider body 8 through screws.

  In the vicinity of the center of the body portion 26 of the lubricant container 10b, a through hole 31 for inserting the above-described guide member 37 (FIG. 1) is formed so as to communicate with the through hole 20 of the end cap 9b. A cylindrical nipple 42 is attached to the through hole 31 of the lubricant container 10b and the through hole 20 of the end cap 9b, so that leakage of the lubricant can be prevented. Also, body screw holes 30a and 30b penetrating in the running direction of the slider 3 are formed on the left and right sides of the through hole 31 of the body portion 26 of the lubricant container 10b.

  As shown in FIG. 5B, the lubricant-impregnated member 32 has a trunk portion 33 and legs 34a and 34b so as to be accommodated in the accommodating portion 28 formed in the lubricant container 10b, and is formed of felt. Has been. The legs 34a and 34b are provided with relief portions 35a and 35b at positions corresponding to the leg cylinders 29a and 29b so as to avoid interference with the leg cylinders 29a and 29b of the lubricant container 10b. Yes. As the felt forming the lubricant-impregnated member 32, wool, aramid fiber, glass fiber, cellulose fiber, nylon fiber, polyester fiber, polyether fiber, polyolefin fiber, rayon fiber, or the like can be used.

  The trunk portion 33 of the lubricant-impregnated member 32 has a through hole 38 into which the guide member 37 is inserted in a portion corresponding to the through hole 31 for the guide member 37 formed in the lubricant container 10b. . Further, the body 33 of the lubricant-impregnated member 32 is formed with body screw holes 36 a and 36 b through which screws are passed on the left and right sides of the through hole 38.

  According to the first embodiment of the present invention configured as described above, the guide member 37 having a pore density gradient is provided, and the lubricant penetrates into the lubricant member 14 from the side of the guide member 37 having a high pore density. Therefore, an appropriate amount of lubricant can be gradually supplied from the lubricating member 14 to the rolling elements 16. Further, since the lubricant containers 10a and 10b for storing the lubricant are provided, a good lubrication state can be maintained without replenishing the lubricant over a long period of time.

  Further, the leg portions 23a and 23b of the lubricating member 14 that come into contact with the rolling elements 16 constitute inner surfaces of the direction change paths 15a to 15d so that they do not receive the centrifugal force of the rolling elements 16 during high-speed movement. By doing so, wear and breakage due to contact with the rolling elements 16 can be suppressed. Further, since the lubricating member 14 is sandwiched between the slider body 8 and the end caps 9a and 9b, the lubricating member 14 does not fall off or be damaged to the direction changing paths 15a to 15d.

(Second Embodiment)
A linear motion guide apparatus according to a second embodiment of the present invention will be described with reference to FIG. The second embodiment is different from that of the first embodiment in the configuration of the guide member 40 inserted into the body portion 12 of the end caps 9a and 9b, and the other parts are the same as those of the first embodiment, and the common parts are the same. Are denoted by common reference numerals and the description thereof is omitted. 6 (a) is a front view of the end cap 9b and the lubricating member 14 corresponding to FIG. 2 (a) as seen from the slider body 8 side, and FIG. 6 (b) is an A- It is A sectional view. FIG. 6C is a partial cross-sectional view taken substantially along the line BB in FIG. Also in the second embodiment, the through hole 20 for inserting the guide member 40 is formed in the center of the body portion 12 of the end cap 9b, and the tip of the guide member 40 inserted into the through hole 20 is the body portion of the lubricating member 14. 22, the rear end portion is inserted into the container 10 b through the through hole 31 of the lubricant container 10 b and is in contact with the body portion 33 of the lubricant impregnated member 32 (FIG. 5B).

  As shown in FIG. 6C, the guide member 40 of the second embodiment is formed in a half-moon shape in cross section. Similar to the first embodiment, the half-moon-shaped guide member 40 is configured such that the pore density has a relatively high, medium, and low density gradient from the front end side to the rear end side.

  In the second embodiment, when the guide member 40 is inserted into the circular through holes 20 and 31 so that the guide member 40 has a half-moon-shaped cross-sectional shape, the gap between the inner wall of the through holes 20 and 31 and the outer portion of the guide member 40 is reduced. A gap, that is, a space is formed in the space, and a lubricant (lubricant-impregnated member) can be additionally added to the space. Further, the contact surface of the guide member 40 that contacts the lubricating member 14 is smaller than that of the first embodiment, and accordingly, excessive supply of lubricant to the lubricating member 14 is suppressed. As a result, exhaustion of the lubricant can be avoided, and a linear motion guide device having a long lubrication life can be realized.

  In addition, as a modification of the guide member 40 of the second embodiment, in addition to a completely semicircular cross-sectional shape, for example, a crescent-shaped cross-sectional shape, or conversely, a cross-sectional surface of the through holes 20 and 31 Accordingly, a guide member having a cross-sectional shape in which a crescent-shaped or fan-shaped space is formed in the through holes 20 and 31 may be used.

(Third embodiment)
FIG. 7 shows a linear guide apparatus according to a third embodiment of the present invention. FIG. 7 (a) shows an end cap 9b showing portions corresponding to FIG. 2 (a) and FIG. 6 (a). FIG. 3 is a front view of the lubricating member 14 as viewed from the slider body 8 side. 7B corresponds to FIGS. 2B and 6B, and is a cross-sectional view taken along the line AA in FIG. 7A. The third embodiment is different from the first and second embodiments in the configuration of the guide member 41 inserted into the body portion 12 of the end cap 9b, and the other configurations are substantially the same as those in the first and second embodiments. . Therefore, in FIGS. 7 (a) and 7 (b), the same parts as those in FIGS. 2 (a), (b), 6 (a), and 6 (b) are denoted by the same reference numerals and overlapped. Is omitted.

  In the third embodiment, as clearly shown in FIG. 7 (b), the guide member 41 extends from the tip that contacts the barrel 22 of the lubricating member 14 to the rear end that is inserted into the lubricant container 10b. The guide member has a tapered shape in which the front end side in contact with the portion 22 has a small diameter and the rear end side has a large diameter. As in the first and second embodiments, the guiding member 41 whose outer shape is inclined in the axial direction also has a relatively high, medium, and low density gradient from the front end side to the rear end side. It is configured. In the present embodiment, the through hole 38 of the lubricant-impregnated member 32 is formed in a tapered shape so that the guide member 41 can be fitted therein.

  When such a linear guide device incorporating a tapered tapered guide member 41 is installed in a horizontal posture, the lubricant contained in the guide member 41 tends to be directed toward the large diameter portion on the rear end side due to the influence of gravity. Occurs (in the direction of arrow F in FIG. 7B), compared to a straight guide member having the same outer diameter at the front end and the rear end, the amount of lubricant supplied to the lubricant member 14 in contact with the front end of the guide member 41 is limited, As a result, the lubrication life of the linear motion guide device is extended, and the frequency of lubricant supply can be kept low. As in the second embodiment, a lubricant (lubricant-impregnated member) may be additionally added to the space between the inner walls of the through holes 20 and 31 and the outer portion of the guide member 41.

  As described above, according to the present invention, since an appropriate amount of lubricant can be supplied to the rolling elements 16, it is possible to maintain a good lubrication state without replenishing the lubricant over a long period of time, and maintenance labor And a linear motion guide device that can reduce lubricant costs.

  In each of the above embodiments, the present invention is applied to a linear motion guide device. However, the present invention is not limited to this and can be applied to other motion guide devices such as a curved motion guide device.

DESCRIPTION OF SYMBOLS 1 Linear motion guide apparatus 2 Guide rail 3 Slider 5a, 5b Corner part rolling groove 6a, 6b Side part rolling groove 8 Slider main body 9a, 9b End cap 10a, 10b Lubricant container 11a, 11b Side seal 12 Side seal trunk Part 13a, 13b Side seal leg 14 Lubricating members 15a-15d Direction change path 16 Rolling elements 17a, 17b Through hole 18 Lubricating member accommodating parts 19a-19d Recess 20, 31 Through hole 22 Body 23a, 23b of lubricating member Lubricating member leg portions 24a to 24d Protruding portion 26 Lubricant container trunk portions 27a and 27b Leg portion 28 receiving portions 29a and 29b Leg cylindrical portion 31 Through hole 32 Lubricant impregnating member 33 Lubricant impregnating member trunk portion 34a, 34b Leg portions 37, 40, 41 of the lubricant-impregnated member

Claims (9)

A guide rail,
A slider body that slides on the guide rail;
A rolling element that rolls between the slider body and the guide rail as the slider body slides;
In the rolling bearing guide device having an end cap that is attached to an end surface that becomes the head or tail of the slider body at the time of sliding and forms a direction change path that changes the moving direction of the rolling element,
A lubricating member disposed between the slider body and the end cap and partially exposed in the direction change path;
A lubricant container that holds the lubricant and is disposed adjacent to the end cap;
In order to guide the lubricant in the lubricant container to the lubrication member, the guide member extends from the lubricant container toward the lubrication member, and a leading end portion is in contact with the lubrication member.
The rolling bearing guide device according to claim 1, wherein the guide member has a hole density at the tip portion higher than a hole density other than the tip portion. The lubricating member is disposed on both sides of the guide rail, and includes a pair of legs that are partially exposed in the direction change path, and a body that connects the pair of legs.
The rolling bearing guide device according to claim 1, wherein the lubricant in the lubricant container is guided from the guide member to the leg portion through the trunk portion.   The said guide member is comprised so that a void | hole density may fall toward the rear-end part extended in the said lubricant container from the said front-end | tip part, The Claim 1 or Claim 2 characterized by the above-mentioned. Rolling bearing guide device.   4. The rolling according to claim 3, wherein the guide member is configured to have a relatively high, medium, and low pore density gradient from the front end portion toward the rear end portion. Bearing guide device.   5. The rolling bearing guide device according to claim 4, wherein the guide member is configured by arranging three guide member pieces having different hole densities from the lubricating member side in descending order of the hole density. .   The rolling bearing guide device according to any one of claims 1 to 5, wherein the guide member has a tapered shape that tapers from the rear end portion toward the tip end portion. The end cap is formed with a through hole extending toward the guide member,
In the lubricant container, an opening communicating with the through hole of the end cap is formed,
The said guide member is inserted in the said opening of the said lubricant container, and the said through-hole of the said end cap, The said front-end | tip part is contacting the said lubrication member, Any one of Claim 1-6 A rolling bearing guide device according to claim 1. A gap is provided between the inner wall of the through hole of the end cap and the inner wall of the opening of the lubricant container, and the guide member,
The rolling bearing guide device according to claim 7, wherein the gap is filled with a lubricant. The through hole of the end cap and the opening of the lubricant container are circular;
The rolling bearing guide device according to claim 8, wherein a cross-section of the guide member is a half-moon shape.

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