JP4985845B2 - Lubricant supply member for linear guide, linear guide - Google Patents

Description

  The present invention relates to a lubricant supply member for a linear guide and a linear guide including the same.

  The linear guide includes a guide rail having a track surface extending in the axial direction, a slider including leg portions disposed on both sides in the width direction of the guide rail, and a horizontal portion connecting the leg portions, and a plurality of rolling elements. It has. The slider includes a slider body in which a leg surface facing the raceway surface of the guide rail is formed on the leg portion, and a pair of end caps covering both axial end surfaces of the slider body.

And, a rolling path formed by both guide surfaces of the guide rail and the slider, a linear return path formed in the slider body, an arc-shaped direction changing path formed in the end cap, One of the guide rail and the slider moves linearly relative to the other when the rolling element rolls in the circulation path.
As a conventional example of a linear guide provided with a lubricant supply member, there are those described in Patent Documents 1 and 2 below.

  In Patent Document 1, a lubricant plate having a lubricant-containing member is provided at an end portion in the axial direction of a slider as a lubricant supply member that supplies a lubricant in sliding contact with a rolling surface of a guide rail of a linear guide. The lubricant-containing member of the lubrication plate is obtained by impregnating a porous plate material with lubricating oil, and is detachably attached to the axial end surface of the end cap of the slider. This lubricating plate needs to be removed and replaced when the impregnated lubricant is exhausted, or the lubricant-containing member needs to be replenished.

Patent Document 2 discloses a portion corresponding to a leg portion and a horizontal portion of a slider in order to supply the lubricant to the rolling surface of the guide rail continuously for a longer period of time than the method of Patent Document 1. A case in which a housing chamber for containing a lubricant is formed is disposed outside the lubricating plate, and the lubricant-containing member of the lubricating plate is brought into contact with the lubricant in the housing chamber. Are listed.
Japanese Patent Laid-Open No. 10-205534 JP 2000-145769 A

However, in the method of the above-mentioned patent document 2, since it is necessary to remove the case when the lubricant in the accommodation chamber runs out and is replaced, it takes time to replace. In order to reduce this effort, it is necessary to enlarge the storage chamber of the case and extend the replacement period of the lubricant. However, in this case, there is a problem that the case becomes large and cannot be made into a compact structure.
The present invention has been made paying attention to such problems of the prior art, and provides a lubricant supply member for a linear guide that has both a compact structure and a reduction in labor for supplying lubricant. Let it be an issue.

  In order to solve the above-mentioned problems, a lubricant supply member for a linear guide according to the present invention includes a guide rail having a raceway surface extending in the axial direction, leg portions disposed on both sides in the width direction of the guide rail, and these leg portions. And a plurality of rolling elements, wherein the slider has a slider body in which a leg surface facing the raceway surface of the guide rail is formed on the leg, and an axis of the slider body A pair of end caps covering both end surfaces in the direction, a rolling path formed by both the guide rail and the raceway surface of the slider, a straight return path formed in the slider body, and the end cap A linear gear in which one of the guide rail and the slider linearly moves relative to the other by rolling the rolling element in a circular path formed by the arc-shaped direction change path formed in A lubricant supply member that is used by being installed at the end of the end cap in the axial direction, and that supplies the lubricant in sliding contact with the rolling surface of the guide rail, and has the following configuration A It is characterized by.

[Configuration A]
A lubricant application body that applies a lubricant in sliding contact with the rolling surface of the guide rail, a lubricant-containing body that supplies the lubricant to the lubricant application body, a lubricant application body, and a lubricant-containing body. And the box is composed of portions corresponding to the leg portion and the horizontal portion of the slider, and the lubricant application body is provided on the leg portion of the box body. And the lubricant-containing body is accommodated in a hole penetrating the horizontal portion of the box in the width direction, and the lubricant-containing body is detachable from an opening present on the side surface of the box. And a rod-like protrusion that extends in the front-rear direction on the bottom surface of the case that covers the top, bottom, left, and right surfaces and the rear surface of the lubricant-containing body and elastically deforms when the case is inserted into and removed from the hole in the box. Formed on both the left and right side surfaces of the case, extending in the front-rear direction, and having holes in both lengthwise ends. Made a rod-shaped projections are formed.

In the lubricant supply member of the present invention, since the lubricant-containing body is detachably accommodated in the box, the lubricant contained in the lubricant-containing body accommodated in the box disappears. Then, the lubricant-containing body is removed from the box and a new lubricant-containing body (lubricant-containing body containing a sufficient amount of lubricant) can be put in and used immediately. Therefore, the labor for replenishing the lubricant is reduced as compared with the lubricant supply member of Patent Document 2.
Further, since the lubricant-containing body is accommodated in the horizontal portion of the box and the lubricant application body is disposed on the leg of the box, the lubricant supply member of Patent Document 2 is compact. It can be a simple structure.
The present invention also provides a linear guide including the linear guide lubricant supply member of the present invention.

  According to the lubricant supply member for linear guide of the present invention, it can be made compact compared with the lubricant supply member of Patent Document 2, and less by replacing the lubricant-containing body housed in the box. Long-term lubrication can be performed with labor.

It is a partial side view which shows the linear guide to which the lubricant supply member of embodiment was attached. It is AA sectional drawing of FIG. It is a perspective view which shows the state which decomposed | disassembled the lubricant supply member of embodiment.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a partial side view showing a linear guide to which a lubricant supply member of this embodiment is attached. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a perspective view showing an exploded state of the lubricant supply member of this embodiment.
As shown in FIG. 1, the lubricant supply member 1 is installed at the axial end of the end cap 21 of the slider 2 of the linear guide. The end cap 21 is installed at the end of the slider body 22 in the axial direction. Reference numeral 3 denotes a guide rail, which has two pairs of raceway grooves (orbital surfaces) 31 and 32 extending in the axial direction. Reference numeral 4 denotes a side seal.

As shown in FIG. 3, the lubricant supply member 1 includes a lubricant application body 11, a case 13 containing a lubricant-containing body 12, and a box body 14.
The box 14 includes a portion (leg portion) 141 corresponding to the leg portion of the slider 2 and a portion (horizontal portion) 142 corresponding to the horizontal portion of the slider 2.
The leg portion 141 is formed with protrusions 143 and 144 that fit into the raceway grooves 31 and 32 of the guide rail 3. A recess 141 a for arranging the lubricant application body 11 is formed on one end surface of the leg 141. Wall portions 145 and 146 for restricting movement of the lubricant application body 11 in the width direction are formed at positions between the protrusions 143 and 144 of the recess 141a and at positions below the protrusion 144 of the recess 141a. ing.

The horizontal portion 142 is formed with a hole 142a having a rectangular cross section and penetrating in the width direction. The hole 142a is a space for accommodating the rectangular parallelepiped case 13. A portion on the upper side (on the horizontal portion 142 side) of the concave portion 141 a of the leg portion 141 is a rectangular hole 141 b that communicates with the hole 142 a of the horizontal portion 142. The horizontal portion 142 is also formed with a female screw 142 b for attaching the side seal 4 to the box body 14.
A through-hole 141c that penetrates the entire leg 141 along the length direction of the guide rail 3 is formed below the hole 141b of the concave portion 141a of the outer portion in the width direction of the leg 141. A protruding portion 141d for extending the through hole 141c to the same surface as the end surface of the horizontal portion 142 is formed on the outer side in the width direction of the concave portion 141a.

The lubricant application body 11 is obtained by cutting a felt plate having a thickness corresponding to the recess size of the recess 141a into a shape that fits in the entire recess 141a including the hole 141b. Surface) 31 and 32 are provided with protrusions 111 and 112, and a recess 113 that fits into the protrusion 141d.
The lubricant-containing body 12 is obtained by impregnating a rectangular parallelepiped base material made of a porous body with a predetermined lubricant. The case 13 covers the upper, lower, left, and right surfaces and the rear surface (one axial end surface of the guide rail 3) of the lubricant-containing body 12, and the front surface (the other axial end surface) is exposed.

  A bar-shaped protrusion 131 a extending in the front-rear direction is formed on the lower surface (surface disposed on the leg 141 side) 131 on the outer side of the case 13. The protrusion 131 a is elastically deformed when the case 13 is inserted into and removed from the hole 142 a of the box body 14. Bar-shaped protrusions 132a extending in the front-rear direction are formed on the left and right side surfaces 132 on the outside of the case 13, and holes 132b are formed at both ends in the length direction of the protrusions 132a.

  When attaching the lubricant supply member 1 to the end cap 21, a bolt is inserted into the through hole 141 c and the tip of the bolt is screwed into a female screw provided in the end cap 21. Thereby, first, the box 14 is fixed to the end cap 21. Next, with the lubricant application body 11 fitted in the recess 141 a of the box body 14, a bolt is inserted from the outside of the side seal 4, and the tip of this bolt is a female screw 142 b provided on the horizontal portion 142 of the box body 14. Screwed on. Thereby, the lubricant application body 11 is fixed to the recessed part 141a by fixing the side seal 4 to the box 14.

  Next, the case 13 containing the lubricant-containing body 12 is inserted into the hole 142a of the box body 14 while applying a predetermined force to elastically deform the protrusion 131a. After putting the entire case 13 into the hole 142a and placing the protrusion 132 on the side surface of the case 13 on the outside of the box 141, the application of force is stopped. Thereby, the protrusion 131a of the case 13 is pressed by the elastic force into the hole 142a of the box 14, and the case 13 is fixed to the hole 142a of the box 14.

In this state, the lubricant application body 11 and the lubricant-containing body 12 come into contact with each other at the hole 141b of the recess 141a of the box body 14. In this portion, the lubricant is supplied from the lubricant-containing body 12 to the lubricant application body 11, and when the linear guide is used, the track grooves 31, 32 of the guide rail 3 from the protrusions 111, 112 of the lubricant application body 11. A lubricant is applied to the surface.
Further, when the lubricant contained in the lubricant containing body 12 accommodated in the box 14 via the case 13 is exhausted, for example, first, a wire-like jig is inserted into the hole 132b of one protrusion 132a. The case 13 is pulled out from the hole 142a of the box 14 to the extent that it can be grasped by hand by pulling it toward both ends and pulling forward.

Next, the pulled-out portion of the case 13 is grasped by hand, and the entire case 13 is taken out from the hole 142 a of the box body 14. Next, the case 13 containing the new lubricant-containing body (lubricant-containing body sufficiently containing the lubricant) 12 is inserted into the hole 142 a of the box body 14. Thereby, taking in and out of the lubricant containing body 12 can be performed easily.
That is, the lubricant supply member 1 can replace the lubricant-containing body 12 by removing the case 13 from the box body 14 without removing the entire lubricant supply member 1. Compared to the above, the labor for supplying the lubricant is reduced. Further, since the lubricant-containing body 12 is accommodated in the horizontal portion 142 of the box body 14 and the lubricant application body 11 is disposed on the leg portion 141 of the box body 14, it is compared with the lubricant supply member of Patent Document 2. And it has a compact structure.

  In this embodiment, the lubricant-containing body 12 is put into and out of the hole 142a of the box body 14 by putting the lubricant-containing body 12 in the case 13 and taking out the case 13; The body 12 may be directly inserted into and removed from the hole 142a of the box body 14, and after the lubricant-containing body 12 is inserted, the hole 142a of the box body 14 may be closed with a lid.

DESCRIPTION OF SYMBOLS 1 Lubricant supply member 11 Lubricant application body 12 Lubricant containing body 13 Case 14 Box body 141 Leg part of box (part corresponding to leg part of slider)
141a Concave portion for disposing the lubricant application body 141b Hole for contacting the lubricant application body and the lubricant-containing body 142 Horizontal portion of the box (portion corresponding to the horizontal portion of the slider)
142a Horizontal portion hole (space for containing lubricant-containing body)
2 Slider 21 End cap 22 Slider body 3 Guide rail 31, 32 Track groove (track surface)
4 Side seal

Claims (2)

A guide rail having a track surface extending in the axial direction, a slider including leg portions disposed on both sides in the width direction of the guide rail, and a horizontal portion connecting the leg portions, and a plurality of rolling elements, The slider includes a slider body in which a leg surface facing the raceway surface of the guide rail is formed on the leg portion, and a pair of end caps covering both axial end faces of the slider body,
It comprises a rolling path formed by both the guide rail and the raceway surface of the slider, a linear return path formed in the slider body, and an arcuate direction changing path formed in the end cap. A linear guide in which one of the guide rail and the slider moves linearly relative to the other as the rolling element rolls in the circulation path.
A lubricant supply member that is used by being installed at an end portion in the axial direction of the end cap, and that supplies a lubricant in sliding contact with a rolling surface of the guide rail,
A lubricant application body that applies a lubricant in sliding contact with the rolling surface of the guide rail, a lubricant-containing body that supplies the lubricant to the lubricant application body, a lubricant application body, and a lubricant-containing body. And a box body that accommodates so as to be in contact with a part,
The box body is composed of portions corresponding to the leg portion and the horizontal portion of the slider, and the lubricant application body is disposed on the leg portion of the box body, and a hole penetrating the horizontal portion of the box body in the width direction. The lubricant containing body is accommodated, and the lubricant containing body is detachable from an opening present on a side surface of the box of the hole,
A rod-like protrusion extending in the front-rear direction and elastically deforming when the case is inserted into and removed from the hole of the box is formed on the lower surface of the case covering the upper, lower, left, and right surfaces and the rear surface of the lubricant-containing body. A linear guide lubricant supplying member, characterized in that rod-like projections extending in the front-rear direction and having holes formed at both ends in the length direction are formed on both left and right side surfaces of the linear guide. A guide rail having a track surface extending in the axial direction, a slider including leg portions disposed on both sides in the width direction of the guide rail, and a horizontal portion connecting the leg portions, and a plurality of rolling elements, The slider includes a slider body in which a leg surface facing the raceway surface of the guide rail is formed on the leg portion, and a pair of end caps covering both axial end faces of the slider body,
It comprises a rolling path formed by both the guide rail and the raceway surface of the slider, a linear return path formed in the slider body, and an arcuate direction changing path formed in the end cap. In the linear guide in which one of the guide rail and the slider linearly moves relative to the other by rolling the rolling element in the circulation path,
A lubricant supply member that supplies a lubricant in sliding contact with the rolling surface of the guide rail at an axial end of the end cap;
The lubricant supply member includes a lubricant application body that applies a lubricant in sliding contact with a rolling surface of the guide rail, a lubricant-containing body that supplies the lubricant to the lubricant application body, and a lubricant application body And a box containing the lubricant-containing body so that both are in contact with each other,
The box body is composed of portions corresponding to the leg portion and the horizontal portion of the slider, and the lubricant application body is disposed on the leg portion of the box body, and a hole penetrating the horizontal portion of the box body in the width direction. The lubricant containing body is accommodated, and the lubricant containing body is detachable from an opening present on a side surface of the box of the hole,
A rod-like protrusion extending in the front-rear direction and elastically deforming when the case is inserted into and removed from the hole of the box is formed on the lower surface of the case covering the upper, lower, left, and right surfaces and the rear surface of the lubricant-containing body. A linear guide characterized in that rod-like projections extending in the front-rear direction and having holes formed at both ends in the length direction are formed on the left and right side surfaces on the outside.

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