JP2011094764A - Rolling element connecting band and motion guide device equipped with rolling element connecting band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling element connecting band satisfactorily securing oil films on the contact portions of rolling elements, reducing rolling resistance and the wear amount of component parts caused by rolling of the rolling elements and improving the positioning accuracy of a movable member, and to provide a motion guide device equipped with the rolling element connecting band. <P>SOLUTION: The rolling element connecting band includes a pair of band parts extending in a movement direction of the rolling elements on both side surfaces of the rolling elements, and at least one connection part extending in a width direction orthogonal to the longitudinal direction of the band parts and connecting the pair of band parts. The rolling elements are held by engagement of projections formed to project toward the rolling element from portions facing the rolling element of the band parts and recesses formed in the rolling elements. Clearances are formed between the connection part and the rolling element adjoining the connection part and between the rolling elements adjacent to each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rolling element coupling band that rotatably holds a rolling element that rolls between a raceway member such as a linear guide or a ball spline and a moving member, and a motion guide device that uses the rolling element coupling band. is there.

  Conventionally, in order to hold a series of rolling elements so that they can smoothly rotate and roll without contacting each other, a rolling element holder having a spacer between adjacent rolling elements is known. ing. Furthermore, such a rolling element cage is known as a separate type in which spacers are individually separated, or a connection type in which a series of spacers are connected by a connecting band extending along the rolling direction of the rolling elements. . In this connection type rolling element cage, the rolling elements can be held while maintaining a constant interval in the traveling direction, so that the moving member can be moved more smoothly.

  Further, as described in Patent Document 1, a plurality of spacers arranged in series at intervals from each other, and side plate portions that connect both longitudinal ends of adjacent spacers to each other. And a roller holding hole formed by a pair of adjacent spacers and a pair of side plate parts opposite to each other connected to the spacers. There is known a roller coupling body provided with an engaging convex portion or an engaging concave portion that can be engaged with the engaging concave portion or the engaging convex portion at the central portion of the inner surface of the side plate portion. In such a roller coupling body, due to the presence of the side plate portion, the skew of the roller (a phenomenon in which the roller axis is inclined with respect to the direction perpendicular to the traveling direction of the roller) is regulated, and the posture of the roller is reliably maintained. It is possible to prevent the rotation of the rotation center shaft of the roller as much as possible.

Japanese Patent No. 3493517

  However, according to the conventional structure, since the engaging concave portion and the engaging convex portion are formed in substantially the same shape, the engaging concave portion and the engaging convex portion are engaged with each other by surface contact. As described above, since the engaging concave portion and the engaging convex portion are in surface contact with each other, the conventional structure has a problem that the rolling resistance of the roller is increased. Further, in the above-mentioned connection type rolling element cage, a spacer is interposed between the adjacent rolling elements, and the rolling element is held so as to be held by a connecting band connecting the spacer and the spacer. Therefore, the rolling contact surface that contacts the raceway member of the rolling element has a structure in contact with the spacer. When the spacer and the rolling element are in contact with each other in this way, oil and fat such as lubricating oil applied or filled to smoothly roll the rolling element is removed by contact with the spacer, There is a possibility that the oil film at the contact portion of the rolling element is not secured. Furthermore, since the rolling surface of the rolling element and the spacer are in surface contact, it is necessary to reduce the contact area in order to reduce the rolling resistance of the rolling element. There was also a problem that it could not be held.

  The present invention has been made in order to solve the above-mentioned problems, and can ensure a good oil film at the contact portion of the rolling element, reduce rolling resistance, and component parts due to rolling of the rolling element It is an object of the present invention to provide a rolling element coupling band that can reduce the amount of wear of the rolling element, and that can improve the positioning accuracy of the moving member, and a motion guide device including the rolling element coupling band.

  A rolling element coupling band according to the present invention that solves the above problems is a load rolling path formed by a rolling element rolling surface formed on a raceway member and a loaded rolling element rolling surface formed on a moving member, and a moving member. And a concave portion formed in the direction of the rotation axis while circulating through the unloaded rolling element rolling path formed in the above and a pair of direction changing paths continuing the loaded rolling path and the unloaded rolling element rolling path. A rolling element coupling band for holding a series of rolling elements in a rotatable manner, wherein the rolling element coupling band includes a pair of band portions extending along a traveling direction of the rolling element on both side surfaces of the rolling element, and At least one connecting portion that extends in the width direction orthogonal to the longitudinal direction of the belt portion and connects the pair of belt portions is provided, and the rolling element is moved from the portion of the belt portion facing the rolling element to the rolling member. And a convex portion formed so as to project toward the concave portion. Held by engagement between the rolling elements adjacent to the connecting portion and the connecting portion, and wherein the gap is formed between adjacent rolling elements to each other.

  Further, the rolling element connecting band according to the present invention is formed on a load rolling path formed by a rolling element rolling surface formed on the raceway member and a load rolling element rolling surface formed on the moving member, and the moving member. And a convex part formed so as to project in the direction of the rotation axis while circulating through the pair of direction changing paths that continue the load rolling path and the no-load rolling element rolling path. A rolling element coupling band for holding a series of rolling elements in a rotatable manner, wherein the rolling element coupling band includes a pair of band portions extending along a traveling direction of the rolling element on both side surfaces of the rolling element, and It is provided with at least one connection part which extends in the width direction orthogonal to the longitudinal direction of a belt part, and connects the pair of belt parts, and the rolling element is a crevice formed in a part facing the rolling element of the belt part And the convex part is engaged to hold the connecting part. Wherein the gap is formed between the rolling elements during and adjacent to each other with the rolling elements adjacent to the coupling portion.

  Furthermore, the motion guide device according to the present invention includes a raceway member on which a rolling element rolling surface is formed, and a loaded rolling element rolling surface that faces the rolling element rolling surface, and is relatively relative to the raceway member. A moving member assembled in a freely movable manner, a loaded rolling path formed by the rolling element rolling surface and the loaded rolling element rolling surface, an unloaded rolling element rolling path formed by the moving member, and the load rolling Circulating a pair of direction change paths that continue the runway and the no-load rolling element rolling path, the rolling element having a recess formed toward the rotation axis direction, and the plurality of rolling elements can be rotated in series. A rolling element coupling band for holding, the rolling element coupling band is a pair of band portions extending along the traveling direction of the rolling element on both side surfaces of the rolling element, and a width orthogonal to the longitudinal direction of the band portion. The number of connecting portions that extend in the direction and connect the pair of belt portions is small. The rolling element is held by engaging a convex portion formed to protrude toward the rolling element at a portion of the belt portion facing the rolling element, and the concave portion, A gap is formed between the connecting part and the rolling elements adjacent to the connecting part and between the rolling elements adjacent to each other.

  According to the present invention, the rolling elements are held by the concavo-convex engagement between the rolling elements and the belt portion, and gaps are formed between the connecting portions and the rolling elements and between the adjacent rolling elements. Therefore, the contact surface of the rolling element does not come into contact with the rolling element coupling band, and an oil film on the contact surface of the rolling element can be secured satisfactorily.

The exploded view for demonstrating the outline of the exercise | movement guide apparatus with which the rolling-element coupling band which concerns on 1st Embodiment was integrated. The partial cross section perspective view for demonstrating the structure of the rolling element coupling band which concerns on 1st Embodiment. The top view of the rolling element connection belt | band | zone which concerns on 1st Embodiment. Sectional drawing for demonstrating an example of the method of engagement with a rolling element and a rolling element coupling belt. Sectional drawing for demonstrating an example of the method of engagement with a rolling element and a rolling element coupling belt. Sectional drawing for demonstrating an example of the method of engagement with a rolling element and a rolling element coupling belt. Sectional drawing for demonstrating an example of the method of engagement with a rolling element and a rolling element coupling belt. The partial cross section perspective view for demonstrating the structure of the rolling element coupling band which concerns on 2nd Embodiment. The upper side figure of the rolling element connection band which concerns on 2nd Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a rolling element rolling zone according to the present invention and a motion guide device including the rolling element rolling zone will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

[First Embodiment]
FIG. 1 is an exploded view for explaining an outline of a motion guide device incorporating a rolling element coupling band according to the first embodiment, and FIG. 2 is a diagram of the rolling element coupling band according to the first embodiment. FIG. 3 is a partial cross-sectional perspective view for explaining the structure, FIG. 3 is a top view of the rolling element coupling band according to the first embodiment, and FIGS. 4 to 7 illustrate rolling elements and rolling element coupling bands. It is sectional drawing for demonstrating the method of engagement.

  As shown in FIG. 1, a motion guide apparatus 1 incorporating a rolling element coupling band 30 according to the present embodiment includes a raceway member 10 that extends linearly, and a rolling element that holds a plurality of rolling elements 31 on the raceway member. And a moving member 20 that is movably assembled via a connecting band 30.

  The track member 10 is formed in a substantially quadrangular cross section and is formed to be elongated in the longitudinal direction. Grooves 11a are formed along the longitudinal direction on the left and right side surfaces of the track member 10 in the longitudinal direction, and the groove 11a has a wall surface and a bottom surface 11c as rolling element rolling surfaces 11b. The rolling element rolling surfaces 11b, which are the wall surfaces of the grooves 11a, are formed so as to intersect each other at right angles, and on the left and right side surfaces of the track member 10, there are two rolling elements on each side, a total of four rolling element rolling surfaces 11b. Is formed. The track member 10 is manufactured by, for example, machining such as drawing, cutting, and grinding. In the case where the guidance target moves in a curved line, the track member 10 may be bent in a curved shape.

  The moving member 20 includes a central portion 20a facing the top surface of the track member 10, and a side wall portion 20b extending from the left and right ends of the central portion 20a and facing the left and right side surfaces of the track member 10, and is long. A cross-sectional shape perpendicular to the direction is formed in a substantially U-shape. A protruding portion 20c having substantially the same shape as the groove 11a formed on the left and right side surfaces of the track member 10 is formed on the side wall portion 20b of the moving member 20, and the protruding portion 20c includes a rolling element rolling surface. The load rolling-element rolling surface 20d facing 11b is formed. Moreover, the load rolling-element rolling surface 20d is formed in total four strips by two each on the upper and lower sides of the left and right side wall portions 20b of the moving member 20.

  Further, a through-hole 22 extending in parallel with a predetermined interval from the two upper and lower load rolling element rolling surfaces 20d is formed in the side wall portion 20b of the moving member 20. An unloaded rolling element rolling path constituting member 26 composed of a pair of pipe halves obtained by dividing an elongated cylindrical member along the axial direction is inserted into the through hole 22. The no-load rolling element rolling path constituting member 26 is formed with an unloaded rolling element rolling path 26a extending along the axial direction.

  Furthermore, direction change path forming members 27 a, 27 b, 27 c are sandwiched between the end plates 21 at both end surfaces in the longitudinal direction of the moving member 20. The direction change path forming members 27a, 27b, and 27c are respectively provided with end portions of the loaded rolling element rolling path formed by the rolling element rolling surface 11b and the loaded rolling element rolling surface 20d and the unloaded rolling element rolling path 26a. The direction change path to communicate is formed, and the endless circulation path is formed by the loaded rolling element rolling path, the direction changing path, and the no-load rolling element rolling path 26a. In addition, the direction change path component member connects the upper loaded rolling element rolling path and the lower unloaded rolling element rolling path, and connects the lower loaded rolling element rolling path and the upper unloaded rolling element rolling path. As shown in FIG.

  The moving member 20 is formed by metal injection molding, for example, and may be manufactured by machining such as drawing, cutting, and grinding. Furthermore, the end plate 21 may also be manufactured by metal injection molding, or may be manufactured by resin injection molding.

  Between the rolling element rolling surface 11b of the track member 10 and the loaded rolling element rolling surface 20d of the moving member 20, a rolling element coupling band 30 that holds a plurality of rollers 31 as rolling elements rotatably is interposed. ing. This roller 31 rolls while receiving a load on a loaded rolling element rolling path between the rolling element rolling surface 11b and the loaded rolling element rolling surface 20d. The roller 31 that has rolled to one end of the loaded rolling element rolling path rolls on the unloaded rolling element rolling path 26a via the U-shaped direction changing path. The roller 31 passing through the no-load rolling element rolling path 26a and reaching the end of the unloaded rolling element rolling path 26a is again introduced into the loaded rolling element rolling path via the opposite direction changing path. . Thus, the roller 31 is loading the load between the rolling-element rolling surface 11b and the load rolling-element rolling surface 20d, rolling on an infinite circuit.

  Furthermore, long holding members 23, 24, and 25 formed of synthetic resin are attached to both side edges of the loaded rolling element rolling surface 20d. The holding members 23, 24, and 25 guide the rolling element coupling band 30 so that the roller 31 can be prevented from falling off the load rolling element rolling surface 20 d when the moving member 20 is removed from the track member 10. A guide groove is formed. The first holding member 23 guides the lower side of the rolling element coupling band 30 that moves on the lower load rolling element rolling surface 20d. The second holding member 24 guides the upper side of the rolling element coupling band 30 that moves on the lower loaded rolling element rolling surface 20d, and also moves the rolling element coupling band 30 that moves on the upper loaded rolling element rolling surface 20d. Guide the underside. Further, the third holding member 25 guides the upper side of the rolling element coupling band 30 that moves on the upper load rolling element rolling surface 20d. In addition, guide grooves for guiding the rolling element coupling band 30 are also formed in the no-load rolling element rolling path 26a.

  As mentioned above, although the schematic structure of the exercise | movement guide apparatus 1 incorporating the rolling element connection band which concerns on this embodiment was demonstrated, the most characteristic point of the exercise guide apparatus 1 which concerns on this embodiment is a rolling element connection band. In the method of holding 30 rollers 31. Therefore, with reference to FIGS. 2 to 7, significant feature points of the rolling element coupling band 30 used in the motion guide device 1 according to the present embodiment will be described.

  As shown in FIG. 2, the rolling element coupling band 30 according to this embodiment includes a pair of band portions 32 extending along the traveling direction of the roller 31 on both end surfaces of the roller 31 in the axial direction, A connecting portion 33 that extends in the width direction orthogonal to the longitudinal direction and connects the pair of belt portions 32 is provided. As shown in FIG. 3, the belt portion 32 is formed with a convex portion 34 projecting from the surface facing the roller 31 toward the roller 31, and the convex portion 34 has both end portions in the axial direction of the roller 31. The roller 31 is held in a series of freely rotating manners by engaging with the recesses 35 formed in the.

  Further, as shown in FIG. 3, the connecting portion 33 is formed narrower than the arrangement interval P of the rollers 31, and a gap L is formed between the connecting portion 33 and the roller 31 adjacent to the connecting portion 33. Has been. Thus, since the space | interval L is formed between the connection part 33 and the roller 31, the connection part 33 is arrange | positioned so that it may become non-contact with the rolling surface of the roller 31. FIG. As described above, since the rolling surface of the roller 31 is not in contact with the connecting portion 33, the oil film formed on the rolling surface is not excluded by the connecting portion 33 and is formed on the rolling surface of the roller 31. A good oil film can be secured.

  Moreover, the convex part 34 and the recessed part 35 are formed in different shapes, and are in line contact with each other and engaged. Thus, since the convex portion 34 and the concave portion 35 are in line contact with each other and engaged, the contact area between the roller 31 and the rolling element coupling band 30 becomes as small as possible, and the rolling resistance of the roller 31 is reduced. Can be small.

  As described above, the rolling element coupling band 30 according to the present embodiment can ensure a good oil film formed on the rolling surface of the roller 31 and reduce the rolling resistance, so the rolling element according to the present embodiment. A smooth sliding operation of the motion guide device 1 incorporating the connecting band 30 and an improvement in positioning accuracy can be realized.

  Note that such a method of assembling the rolling element connecting band 30 and the roller 31 is obtained by twisting one band 32 together with the convex part 34 formed on the band 32 around the longitudinal direction of the band 32 as a rotation center. Assembly can be easily performed by returning the twist after abutment of the convex portion 34 on the concave portion 35 of 31.

  Next, with reference to FIGS. 4-7, the specific shape of the engagement method of the rolling element connection band 30 and the roller 31 which concerns on this embodiment is demonstrated.

  In the engagement method shown in FIG. 4, the convex portion 34 a formed on the rolling element coupling band 30 is formed in a columnar shape, and the corners of the column are chamfered. In addition, the recess 35 a formed in the roller 31 has a semi-elliptical cross-sectional shape that is orthogonal to the traveling direction of the roller 31. When the convex part 34a and the concave part 35a formed in this way are engaged, the inner wall of the semi-elliptical concave part 35a and the chamfered part of the convex part 34a come into contact with each other and can be engaged with each other by line contact. .

  In the engaging method shown in FIG. 5, the convex part 34b formed in the rolling element coupling band 30 is formed in a hemispherical shape. Further, the recess 35 b formed in the roller 31 has a triangular cross-sectional shape orthogonal to the traveling direction of the roller 31. When the convex part 34b and the concave part 35b formed in this way are engaged, the inner wall of the hemispherical concave part 35b and the outer peripheral surface of the convex part 34b come into contact with each other, and can be engaged by making line contact.

  In the engaging method shown in FIG. 6, the convex part 34 c formed on the rolling element coupling band 30 is formed in a columnar shape, and the corners of the column are chamfered. Further, the recess 35 c formed in the roller 31 has a hemispherical cross-sectional shape perpendicular to the traveling direction of the roller 31. When the convex part 34c and the concave part 35c formed in this way are engaged, the inner wall of the hemispherical concave part 35c and the chamfered part of the convex part 34c come into contact with each other, and can be engaged by making line contact. In this case, the protruding length of the convex portion 34c in the axial direction of the roller 31 is formed in accordance with the diameter of the concave portion 35c, and is shorter than the convex portion 34a in the engagement method shown in FIG. Is formed.

  In the engaging method shown in FIG. 7, the convex portion 34d formed on the rolling element coupling band 30 is formed in a hemispherical shape. Further, the recess 35 d formed in the roller 31 has a triangular cross-sectional shape orthogonal to the traveling direction of the roller 31. When the convex part 34d and the concave part 35d formed in this way are engaged, the inner wall of the triangular concave part 35d and the outer peripheral surface of the convex part 34d come into contact with each other, and can be engaged by making line contact. In this case, the shape of the concave portion 35d is formed in accordance with the diameter of the convex portion 34d, and is formed shallower than the concave portion 35 in the engagement method shown in FIG.

  Since the roller 31 loads a load between the rolling element rolling surface 11b and the loaded rolling element rolling surface 20d, the load is always applied when rolling on the loaded rolling element rolling path. . As described above, the shape of the concave portion 35 formed on the roller 31 and the convex portion 34 formed on the belt portion 32 can be appropriately changed according to the stress concentration and edge load generated when the roller 31 applies a load. is there.

[Second Embodiment]
Heretofore, the rolling element coupling band 30 according to the first embodiment and the motion guide device 1 incorporating the rolling element coupling band 30 have been described. In the second embodiment to be described next, an example of the rolling element coupling band 130 having a shape different from that of the rolling element coupling band 30 according to the first embodiment will be described. Note that members that are the same as or similar to those in the first embodiment described above are given the same reference numerals, and descriptions thereof are omitted.

  FIG. 8 is a partial cross-sectional perspective view for explaining the structure of the rolling element coupling band according to the second embodiment, and FIG. 9 is a top view of the rolling element coupling band according to the second embodiment. .

  As shown in FIG. 8, the rolling element coupling band 130 according to the present embodiment is an example in which the coupling parts 33 that couple the pair of band parts 32 are formed only at both ends in the longitudinal direction of the pair of band parts 32. It is.

  When the connecting portions 33 are formed only at both ends in the longitudinal direction of the belt portion 32 as described above, the connecting portions 33 formed at both ends of the belt portion 32 and the rollers 31a at both ends of the series of rollers 31 as shown in FIG. A gap L is formed between the two. Moreover, since the connection part 33 is not arrange | positioned between the adjacent rollers 31, the arrangement | positioning space | interval P of the rollers 31 is formed as a space | gap. Accordingly, the connecting portion 33 is formed so as not to contact the rolling surface of the roller 31. As described above, since the rolling surface of the roller 31 is not in contact with the connecting portion 33, the oil film formed on the rolling surface is not excluded by the connecting portion 33 and is formed on the rolling surface of the roller 31. A good oil film can be secured. Further, since the connecting portion 33 is not disposed between the adjacent rollers 31, the arrangement interval P of the rollers 31 can be used as a gap, and the gap can be made large. Can be prevented as much as possible, and the amount of lubricating oil retained in the gap can be increased.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the embodiment.

  For example, in the above embodiment, the case where the concave portion 35 is formed on the roller 31 and the convex portion 34 is formed on the belt portion 32 has been described, but the convex portion is formed on the roller 31 and the concave portion is formed on the belt portion 32. The concave and convex engagement may be performed.

  Moreover, in the said embodiment, although the case where a total of 4 infinite circuit was formed was demonstrated, it is not limited to these and the number of formation of an infinite circuit can be changed suitably.

  Furthermore, in the said embodiment, although the case where the connection part 33 was formed between the rollers 31 and the case where it formed only in the both ends of the longitudinal direction of the strip | belt part 32 was demonstrated, the connection part 33 is a pair of strip | belt part 32. If it can connect, it will not be limited to such an aspect. That is, it is sufficient that at least one connecting portion 33 is formed, and the position thereof is not limited, and can be appropriately changed depending on the usage state of the rolling element connecting band.

  Furthermore, in the above-described embodiment, the case where the rolling element coupling band is applied to the motion guide device has been described. However, the present invention can also be applied to a rotary bearing used for, for example, a bearing. It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

  The rolling element connection band according to the present invention and the motion guide device including the rolling element connection band can ensure an oil film at the contact portion of the rolling element, reduce rolling resistance, and the rolling element rolls. It is possible to provide a motion guide device that can realize a reduction in the amount of wear of components and can improve the positioning accuracy of the moving member.

DESCRIPTION OF SYMBOLS 1 Movement guide device, 10 Track member, 11b Rolling body rolling surface, 20 Moving member, 20d Load rolling body rolling surface, 26a Unloaded rolling body rolling path, 30, 130 Rolling body connection belt, 31 Roller, 32 Band part , 33 connecting portion, 34, 34a, 34b, 34c, 34d convex portion, 35, 35a, 35b, 35c, 35d concave portion, L gap.

Claims (11)

A loaded rolling path formed by a rolling element rolling surface formed on the raceway member and a loaded rolling element rolling surface formed on the moving member, an unloaded rolling element rolling path formed on the moving member, and the load rolling A rolling element coupling band that circulates a pair of direction change paths that continue the running path and the no-load rolling element rolling path, and that rotatably holds a series of rolling elements that include recesses formed in the direction of the rotation axis. Because
The rolling element coupling band includes a pair of belt portions extending along a traveling direction of the rolling element on both side surfaces of the rolling element, and a pair of belt portions extending in a width direction perpendicular to the longitudinal direction of the belt portion. Comprising at least one connecting portion to be connected;
The rolling element is held by engaging a convex portion formed by projecting toward the rolling element from a portion of the belt portion facing the rolling element, and the concave portion,
A rolling element coupling band, wherein a gap is formed between the coupling part and the rolling element adjacent to the coupling part and between the rolling elements adjacent to each other. A loaded rolling path formed by a rolling element rolling surface formed on the raceway member and a loaded rolling element rolling surface formed on the moving member, an unloaded rolling element rolling path formed on the moving member, and the load rolling A series of rolling elements that circulate through a pair of direction change paths that run continuously between the running path and the no-load rolling element rolling path, and that have a convex portion formed so as to protrude in the direction of the rotation axis, are rotatably held. A moving body connecting band,
The rolling element coupling band includes a pair of belt portions extending along a traveling direction of the rolling element on both side surfaces of the rolling element, and a pair of belt portions extending in a width direction perpendicular to the longitudinal direction of the belt portion. Comprising at least one connecting portion to be connected;
The rolling element is held by engaging a concave portion formed in a portion of the belt portion facing the rolling element and the convex portion,
A rolling element coupling band, wherein a gap is formed between the coupling part and the rolling element adjacent to the coupling part and between the rolling elements adjacent to each other. In the rolling element coupling band according to claim 1 or 2,
The rolling element coupling band, wherein the convex part and the concave part engage with each other in line contact with each other. In the rolling element connection belt according to any one of claims 1 to 3,
The rolling element coupling band, wherein the coupling part is formed at both ends in the longitudinal direction of the band part. In the rolling element connection belt according to any one of claims 1 to 4,
The rolling element coupling band, wherein the rolling element is a cylindrical roller. In the rolling element connection belt according to any one of claims 1 to 5,
The rolling element coupling band, wherein the convex part is formed in a cylindrical shape. In the rolling element connection belt according to any one of claims 1 to 5,
The rolling element coupling band, wherein the convex part is formed in a hemispherical shape. In the rolling element connection belt according to any one of claims 1 to 7,
The rolling element coupling band, wherein the recess is formed in a semi-elliptical shape in a cross section perpendicular to the traveling direction of the rolling element. In the rolling element connection belt according to any one of claims 1 to 7,
The rolling element coupling band, wherein the recess is formed in a triangular shape in a cross section perpendicular to the traveling direction of the rolling element. In the rolling element connection belt according to any one of claims 1 to 7,
The rolling element coupling band, wherein the recess is formed in a semicircular shape in a cross section perpendicular to the traveling direction of the rolling element. A raceway member formed with rolling element rolling surfaces;
A load rolling element rolling surface facing the rolling element rolling surface is formed, and a moving member assembled to be relatively movable to the raceway member;
A loaded rolling path formed by the rolling element rolling surface and the loaded rolling element rolling surface, an unloaded rolling element rolling path formed on a moving member, and the loaded rolling path and the unloaded rolling element rolling path A rolling element having a recess formed in the direction of the rotation axis, and circulating through a pair of continuous direction change paths,
A rolling element coupling band for holding the plurality of rolling elements in a series and rotatably,
The rolling element coupling band includes a pair of belt portions extending along a traveling direction of the rolling element on both side surfaces of the rolling element, and a pair of belt portions extending in a width direction perpendicular to the longitudinal direction of the belt portion. Comprising at least one connecting portion to be connected;
The rolling element is held by engaging a convex portion formed to protrude toward the rolling element at a portion of the belt portion facing the rolling element, and the concave portion,
A motion guide device characterized in that a gap is formed between the connecting part and the rolling elements adjacent to the connecting part and between the rolling elements adjacent to each other.

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