JP2007132403A - Rolling element storage belt for rectilinear guide device, and rectilinear guide device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling element storage belt for a rectilinear guide device, which suppresses runout caused during its circulation and damps its sliding resistance, and also to provide a rectilinear guide device. <P>SOLUTION: The rectilinear guide device 10 comprises an endless circulation passage 28 in which a plurality of balls 46 circulate while rolling. A guide groove 60 continuous in the direction where the balls 46 are arranged is formed in the endless circulation passage 28. The rectilinear guide device further comprises a rolling element storage belt 50 having: spacer parts 51 interposed between the adjacent balls 46; and a pair of connection arm parts 52 connecting the spacers 51 to each other on the both lateral sides of the endless circulation passage 28, extended to the outside of the end faces of the spacer parts 51 and guided by the guide groove 60, and arranging the balls 46 in the endless circulation passage 28 in the arranging direction. In the rolling element storage belt 50, the pair of connection arm parts 52 comprise a plurality of projections 53 extending to the guide groove 60 on their surfaces facing the guide groove 60 in the thickness direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rolling element housing belt for a linear motion guide device and a linear motion guide device.

  The linear motion guide device moves the slider relative to the guide rail via a plurality of rolling elements that circulate while rolling in an infinite circulation path. However, in the linear motion guide device, when the slider moves relative to the guide rail, each rolling element moves while rotating in the same direction, so that adjacent rolling elements rub against each other and smooth rolling of the rolling elements occurs. Be disturbed. Therefore, noise increases and the progress of wear of the rolling elements is accelerated. Therefore, conventionally, in order to suppress the generation of noise and smoothly operate the linear motion guide device, a rolling element housing belt has been proposed in which the rolling elements are aligned in the alignment direction in the infinite circulation path (for example, Patent Documents). 1).

For example, in the technique described in Patent Document 1, a rolling element housing belt including a spacer portion interposed between adjacent rolling elements and a connecting arm portion that connects the spacer portions to each other is disclosed. . And each connection arm part is projected and formed in the outer side rather than the end surface of the spacer part. Further, in the endless circuit, guide grooves that are continuous in the direction in which the rolling elements are arranged are formed on both sides in the width direction of the endless circuit, and the connecting arm portion is guided in the guide grooves. . With such a configuration, the rolling element housing belt is arranged in the endless circulation path together with the rolling elements, with the connecting arm portion being guided along the guide groove while aligning the rolling elements in the alignment direction in the endless circulation path. It is possible to circulate smoothly.
JP-A-11-315833

  By the way, in this kind of linear motion guide device, a lubricant such as oil or grease is used in order to make the operation smoother. Such a lubricant is also filled in the gap between the connecting arm portion and the guide groove. Here, for example, in the technique described in Patent Document 1, it is necessary to set the gap between the connecting arm portion and the guide groove as narrow as possible in order to sufficiently suppress the deflection that occurs during circulation of the rolling element housing belt. There is.

However, if the gap between the connecting arm portion and the guide groove is too narrow, the sliding resistance of the rolling element housing belt increases due to the shear resistance of the lubricant filled in the gap. On the contrary, if this gap is widened, the sliding resistance of the rolling element accommodation belt can be reduced, but it is difficult to sufficiently suppress the vibration generated during circulation of the rolling element accommodation belt.
Therefore, the present invention has been made paying attention to such a problem, and is intended for a linear motion guide device capable of suppressing the vibration generated during circulation of the rolling element housing belt and relaxing the sliding resistance. An object of the present invention is to provide a rolling element housing belt and a linear motion guide device.

  In order to solve the above-mentioned problem, the invention described in claim 1 is provided with an infinite circulation path in which a plurality of rolling elements circulate while rolling, and a guide that continues in the direction in which the rolling elements are arranged in the infinite circulation path A spacer having a groove and interposed between adjacent rolling elements, and the spacer are connected to each other at both sides in the width direction of the infinite circulation path, and outside the end face of the spacer A linear motion guide device comprising a rolling element containing belt that projects to the guide groove and aligns the rolling elements in an alignment direction in the endless circulation path, Only one of the opposing surfaces of the connecting arm and the guide groove has one or two or more protrusions projecting toward the other.

  According to the first aspect of the present invention, the protrusion provided in the connecting arm portion or the guide groove of the rolling element housing belt is a portion where the protrusion is provided, and the gap between the connecting arm portion and the guide groove. Can be set as narrow as possible. Therefore, in this portion, it is possible to reduce the shake that occurs during circulation of the rolling element housing belt. And in the other part, since the clearance gap between a connection arm part and a guide groove can be enlarged, the shear resistance of a lubricant can be eased and the sliding resistance of a rolling element accommodation belt can be kept small.

  Further, the invention according to claim 2 is provided with an infinite circulation path in which a plurality of rolling elements circulate while rolling, and a linear guide having a guide groove continuous in the direction in which the rolling elements are arranged in the infinite circulation path. A spacer portion used between the adjacent rolling elements and the spacer portion on both sides in the width direction of the infinite circulation path are connected to each other and outside the end face of the spacer portion. And a pair of connecting arms that are guided by the guide grooves and that align the rolling elements in the direction of alignment in the endless circulation path, and are at least one of the pair of connecting arms. One is characterized in that one or two or more protrusions projecting toward the guide groove are provided on the surface facing the guide groove in the thickness direction.

  According to the second aspect of the present invention, the protrusion provided on the connecting arm portion of the rolling element housing belt is a portion where the protrusion is provided, and the gap between the connecting arm portion and the guide groove is as much as possible. It can be set narrowly. Therefore, in this portion, it is possible to reduce the shake that occurs during circulation of the rolling element housing belt. And in the other part, since the clearance gap between a connection arm part and a guide groove can be enlarged, the shear resistance of a lubricant can be eased and the sliding resistance of a rolling element accommodation belt can be kept small.

Further, the invention according to claim 3 is the rolling element housing belt for the linear motion guide device according to claim 2, wherein the projection portion is formed at a position where the spacer portion is not in the endless circulation path. It is characterized by being provided at a position where it is connected on both sides in the width direction.
According to the third aspect of the present invention, the protrusion provided on the connecting arm portion is set to the connecting position on both sides of the spacer portion. In other words, the position where the projection is provided is directly beside the spacer. Here, since this part is supported by the spacer when the rolling element housing belt circulates, it is a part that is not easily deformed. Therefore, even if the protrusion is provided at this position, the flexibility of the entire rolling element housing belt is hardly affected. Therefore, it is more suitable when it is set as the structure which suppresses the circulation resistance of a rolling element accommodation belt.

According to a fourth aspect of the present invention, there is provided a linear motion guide device comprising the rolling element containing belt for the linear motion guide device according to the second or third aspect.
According to the invention described in claim 4, it is possible to provide a linear motion guide device that exhibits the functions and effects of the rolling element housing belt for linear motion guide device according to claim 2.

  The invention according to claim 5 includes an infinite circulation path in which a plurality of rolling elements circulate while rolling, and has a guide groove in the endless circulation path that is continuous in the direction in which the rolling elements are arranged. A spacer portion interposed between the matching rolling elements and the spacer portion are connected to each other on both sides in the width direction of the infinite circulation path, and projecting outward from an end surface of the spacer portion so as to protrude from the guide groove. A linear motion guide device comprising a rolling element housing belt that aligns the rolling elements in an alignment direction in the endless circulation path, the guide groove having a width thereof One or two or more projecting portions projecting toward the connecting arm portion are provided on a surface facing at least one of the pair of connecting arm portions in the direction.

  According to the fifth aspect of the present invention, the protrusion provided in the guide groove is a portion where the protrusion is provided, and the gap between the connecting arm portion and the guide groove can be set as narrow as possible. . Therefore, in this portion, it is possible to reduce the shake that occurs during circulation of the rolling element housing belt. And in the other part, since the clearance gap between a connection arm part and a guide groove can be enlarged, the shear resistance of a lubricant can be eased and the sliding resistance of a rolling element accommodation belt can be kept small.

  ADVANTAGE OF THE INVENTION According to this invention, while rolling which a rolling element accommodation belt produces during circulation can be suppressed, the sliding resistance can be eased.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a rolling element housing belt for a linear motion guiding device according to the invention and a linear motion guiding device including the rolling element housing belt will be described with reference to the drawings as appropriate.
FIG. 1 is a perspective view showing a linear guide of one embodiment of a linear guide device provided with a rolling element housing belt according to the present invention. 2 is a front view with the end cap of the linear guide of FIG. 1 removed, and FIG. 3 is a cross-sectional view of the linear guide of FIG.

As shown in FIGS. 1 and 2, the linear guide 10 includes a guide rail 12 having a rolling element guide surface 14 and a slider 16 straddling the guide rail 12 so as to be movable relative to the guide rail 12. And.
The guide rail 12 has a substantially square cross-sectional shape, and a total of four rolling element guide surfaces 14 are formed on each side of the guide rail 12 along the longitudinal direction.
As shown in FIG. 1, the slider 16 includes a slider body 17 and end caps 22 attached to both ends of the slider body 17 in the axial direction. The shape of the slider body 17 and the end cap 22 that are continuous in the axial direction is a substantially U-shaped cross-sectional shape.

  As shown in FIG. 2, the slider body 17 has a substantially semicircular load rolling element guide surface facing the respective rolling element guide surfaces 14 of the guide rail 12 inside the substantially U-shaped sleeves. A total of 4 strips are formed. Further, as shown in FIG. 3, the end cap 22 is formed with a pair of direction change paths 24 respectively connected to both ends of the load rolling element guide surface 18. Further, as shown in FIGS. 2 and 3, the slider body 17 communicates with the pair of direction change paths 24, and is a rolling element return path formed of a through hole having a circular cross section parallel to the load rolling element guide surface 18. 20 is formed inside the sleeve.

As shown in FIG. 3, a space sandwiched between the rolling element guide surface 14 of the guide rail 12 and the load rolling element guide surface 18 of the slider body 17 facing the rolling member guide path 12 forms a rolling element track 26. ing. Then, a total of four infinite circulation paths 28 that are annularly continuous are formed by the pair of direction changing paths 24, the rolling element return paths 20, and the rolling element raceways 26.
Furthermore, as shown in the figure, each endless circulation path 28 is loaded with a plurality of balls 46 as rolling elements. The plurality of balls 46 in each endless circulation path 28 constitute a rolling element row 62 together with the rolling element accommodation belt 50 by the rolling element accommodation belt 50.

The rolling element housing belt 50 is formed in an end shape, and a spacer 51 interposed between adjacent balls 46 in the infinite circulation path 28 and the spacer 51 between the infinite circulation paths. 28 and a pair of belt-like connecting arm portions 52 connected on both sides in the width direction.
In this rolling element accommodation belt 50, the space defined by the spacer 51 and the connecting arm portion 52 is a rolling element accommodation portion, and the balls 46 are individually accommodated in the rolling element accommodation portion to be infinite. The rolling element rows 62 can be configured by being aligned in the arrangement direction in the circulation path 28.

  Further, as shown in FIG. 2, the rolling element containing belt 50 includes a guide groove 60 formed in the endless circulation path 28 in the slider 16 with a connecting arm portion 52 projecting in the width direction in the endless circulation path 28. In addition, it is guided on both sides of the endless circulation path 28 in the width direction. The rolling element housing belt 50 moves while the connecting arm portion 52 is elastically deformed inside the direction changing path 24 and the entire rolling element row 62 is rotated. Therefore, the groove width of the guide groove 60 is increased in the direction change path 24 in consideration of the curvature matched to the deformation range of the connecting arm portion 52 (see FIG. 3).

Next, the rolling element accommodation belt 50 will be described in more detail.
FIG. 4 is a view for explaining a main part of the rolling element accommodation belt 50. FIG. 4 (a) is a plan view showing the rolling element accommodation belt 50 in a developed state, and FIG. 4 (b) is a front view thereof. It is.
As for this rolling element accommodation belt 50, the said spacer part 51 and the connection arm part 52 are integrally shape | molded by the injection molding from the synthetic resin material which has flexibility. In addition, the ball 46 is interposed between the spacers 51 which are end-shaped and located in each edge part (refer FIG. 3).

  As shown in FIGS. 4A and 4B, the spacer 51 is a short cylindrical member having an outer diameter slightly smaller than the outer diameter of the ball 46. The spacer 51 has spherical concave curved surfaces 51a and 51b imitating the curved surfaces of adjacent balls 46 so that both end surfaces of the short cylinders face the alignment direction of the balls 46 in the endless circulation path 28. is doing. That is, the spacer 51 is arranged on both sides of each ball receiving hole 55 in the direction in which the balls 46 are arranged with respect to the pair of connecting arm portions 52 to constitute the rolling element containing portion. The spacer 51 has a groove 51c in which a pair of concave curved surfaces 51a and 51b following the spherical shape are opened on one side in the unfolded state. As shown in FIG. When arranged in the endless circulation path 28, the ball 46 accommodated in each rolling element accommodation portion is allowed to move only inward of the endless circulation path 28.

As shown in FIGS. 4A and 4B, the pair of connecting arm portions 52 are thin and long belt-shaped members having a thickness T, and contain circular balls for accommodating the balls 46. The holes 55 are formed side by side in the longitudinal direction. The ball receiving hole 55 is formed with an inner diameter dimension that allows the ball 46 to freely engage and disengage in the front and back directions of the connecting arm portion 52.
Here, in the pair of connecting arm portions 52, the protruding portions 53 are provided for each spacer portion 51 in pairs on both the front and back sides of the connecting arm portion 52.
Specifically, each of the pair of projecting portions 53 is formed so as to protrude toward the guide groove 60 on the surface facing the guide groove 60 in the thickness direction of the connecting arm portion 52. Furthermore, the formation position is provided up to the end of the connecting arm portion 52 at each position where the connecting arm portion 52 connects the spacer portions 51 on both sides in the width direction of the endless circulation path 28 (both sides and the front and back). Yes.

  Each protrusion 53 has a semicircular arc shape in cross section, and the semicircular arc protrusion extends from both ends of each spacer 51 to the endless circulation path 28. It extends along the width direction. Then, by gradually narrowing the width from the middle part toward the end part, the end part side becomes a substantially hemispherical surface. As shown in FIG. 4 (b), the protruding portion 53 forming the pair has a protruding portion height DP slightly smaller than the groove width DS of the guide groove 60, and the connecting arm portion 52 and the guide groove 60. Is set as narrow as possible. Since the protrusion height DP is larger than the thickness T of the connecting arm portion 52, a wide gap between the connecting arm portion 52 and the guide groove 60 is ensured in other portions. Yes. As specific dimensions, in this embodiment, the diameter of the ball 46 = 4.7625 mm, the thickness T of the rolling element housing belt (of the connecting arm portion 52) = 0.5 mm, and the protrusion height DP = 0. The groove width DS of the guide groove 60 is 8 mm and 1.0 mm.

Next, functions and effects of the rolling element housing belt 50 and the linear guide 10 will be described.
In the linear guide 10 having the above-described configuration, when the slider 16 is relatively moved in the axial direction of the guide rail 12, the ball 46 moves while rotating in the infinite circulation path 28, and the rolling element housing belt 50 is also infinite along with the ball 46. It moves in the circulation path 28. At this time, the spacer 51 of the rolling element containing belt 50 in the endless circulation path 28 pushes the ball 46 in front of its own moving direction, and the ball 46 is in front of its own moving direction. Press 51. As a result, the entire rolling element row 62 circulates in the endless circulation path 28. Then, the rolling element row 62 moves in the direction opposite to the slider 16 in the rolling element raceway 26 and enters one direction changing path 24 that is continuous from one end of the rolling element raceway 26 to change the moving direction. , Repeating the circulation of entering the rolling element return passage 20 from the direction changing path 24 and moving in the same direction as the slider 16, entering the other direction changing path 24, changing the moving direction again, and returning to the rolling element raceway 26. Can do.

  According to this linear guide 10, since the spacer 51 is interposed between the balls 46 in the endless circulation path 28, the balls 46 are not in direct contact with each other. Generation of noise and wear due to rubbing is prevented. In addition, since the spacer portions 51 are connected to each other by the connecting arm portion 52 to form the rolling element accommodation belt 50, each ball 46 smoothly moves as a rolling element row 62 in the endless circulation path 28 while maintaining a predetermined interval. Can circulate.

  Further, according to this linear guide 10, the connecting arm portion 52 of each rolling element housing belt 50 is engaged with the guide groove 60. Therefore, each spacer 51 is prevented from falling in the rolling element raceway 26, and the arrangement of the rolling element rows 62 is disturbed to prevent the smooth movement thereof. Further, since the connecting arm portion 52 of the rolling element accommodation belt 50 is guided along the guide groove 60 along the endless circulation path 28, the deflection when the rolling element accommodation belt 50 moves is restricted, and the rolling element accommodation belt 50 is The swing of the balls 46 held between the connecting arm portions 52 is also restricted, and the entire rolling element row 62 can be moved accurately and smoothly in the endless circulation path 28. Further, in the rolling element housing belt 50, the connecting arm portion 52 engages with the guide groove 60, and the ball 46 held between the spacer portions 51 is also supported and held by the concave curved surfaces 51a and 51b. Even when the slider 16 is extracted from the guide rail 12, the rolling element row 62 is prevented from falling off the slider 16.

  Here, in general, in order to sufficiently suppress the vibration generated during circulation of the rolling element housing belt, it is necessary to set the gap between the connecting arm portion and the guide groove as narrow as possible. In general, the linear guide uses a lubricant such as oil or grease in order to make its operation smoother. Such a lubricant is also filled in the gap between the connecting arm portion and the guide groove. Therefore, if the gap between the connecting arm portion and the guide groove is too narrow, the sliding resistance of the rolling element housing belt increases due to the shear resistance of the lubricant filled in the gap. On the contrary, if this gap is widened, the sliding resistance of the rolling element accommodation belt can be reduced, but it is difficult to sufficiently suppress the vibration generated during circulation of the rolling element accommodation belt.

However, according to the linear guide 10, the pair of connecting arm portions 52 has the protrusions 53 protruding toward the guide groove 60 on each surface facing the guide groove 60 in the thickness T direction. Each part 51 is provided on both sides thereof.
As a result, the protrusion 53 provided on the connecting arm portion 52 of the rolling element housing belt 50 sets the gap between the connecting arm portion 52 and the guide groove 60 as narrow as possible at the portion where the protrusion 53 is provided. can do. Therefore, in this portion, it is possible to reduce the vibration that occurs during circulation of the rolling element accommodation belt 50. The only part where the gap between the connecting arm portion 52 and the guide groove 60 is set as narrow as possible is the projection 53, and the gap between the connecting arm portion 52 and the guide groove 60 can be widened at other portions. Therefore, the sliding resistance of the rolling element housing belt 50 can be kept small by reducing the shear resistance of the lubricant.

  And according to this linear guide 10, the projection part 53 is provided in the position which connects the spacer part 51 in the both sides of the width direction of the infinite circulation path 28. As shown in FIG. In other words, this position is directly beside the spacer 51. That is, this portion is a portion that is originally difficult to deform when the rolling element housing belt 50 circulates. Therefore, even if the protrusion 53 is provided at this position, the flexibility of the entire rolling element housing belt 50 is hardly lowered. Therefore, it is more preferable when it is set as the structure which suppresses the circulation resistance of the rolling element accommodation belt 50. FIG.

As described above, according to the rolling element accommodation belt 50 and the linear guide 10 including the rolling element accommodation belt 50, the rolling element accommodation belt 50 can be prevented from shaking during circulation and the sliding resistance can be reduced. .
The rolling element accommodating belt for linear motion guide device and the linear motion guide device according to the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above embodiment, the linear guide provided with the ball has been described as an example of the linear motion guide device including the rolling element housing belt according to the present invention. Can be applied to a roller guide provided with a roller.
Further, for example, in the above-described embodiment, the pair of connecting arm portions 52 extends to the end portion of the connecting arm portion 52 on each surface facing the guide groove 60 in the thickness T direction and is stretched toward the guide groove 60. Although the example which has the protrusion part 53 to take out makes a pair in the both sides for every spacer part 51 was demonstrated, it is not limited to this.

  For example, as shown in Modification 1 in FIG. 5, the protrusion 53 may be configured such that the tip 53 a further protrudes from the end of the connecting arm 52 to the vicinity of the side surface 60 a in the width direction of the guide groove 60. Good. If the protruding portion 53 has such a shape having the tip portion 53a, the connecting arm is formed in the width direction of the rolling element housing belt 50 by the tip portion 53a and the side surface 60a at the portion where the protruding portion 53 is formed. The gap between the portion 52 and the guide groove 60 can be set as narrow as possible. Therefore, also in the width direction of the rolling element accommodation belt 50, it is possible to suppress the vibration generated during circulation of the rolling element accommodation belt 50 and to reduce the sliding resistance.

  Further, for example, as shown in Modification 2 in FIG. 6, the protruding portion 53 may be formed between adjacent spacer portions 51 (in other words, a position directly beside the ball 46). Normally, the thin connecting arm 52 is repeatedly bent at the thin portion when sliding is repeated. Therefore, if the protrusion 53 is formed at this position, it is suitable for improving the strength of the thin connecting arm 52, and at the same time, as described above, the rolling element containing belt 50 is prevented from shaking during circulation. The sliding resistance can be relaxed.

Further, for example, the protrusion 53 has been described as an example in which each spacer 51 is formed in pairs on both sides thereof, but is not limited thereto, and for example, every other spacer 51 in the arrangement direction. Moreover, it is not limited to the structure which makes a pair in the front and back both sides of the connection arm part 52, You may form in front and back alternately in the row direction.
Furthermore, in the above-described embodiment, the example in which the protrusions 53 are formed on both sides of each spacer 51 has been described. However, the protrusions 53 may be formed on at least one of the pair of connecting arm portions 52. In addition, the effect of the present application is achieved as long as the structure has one or more protrusions 53 projecting toward the guide groove 60 on the surface facing the guide groove 60 at least in the thickness direction of the connecting arm portion 52. However, the configuration exemplified in the above-described embodiment or each modified example is more preferable for achieving a configuration that favorably achieves the effects of the present application.

  Furthermore, although the projection part 53 demonstrated in the said embodiment in the example formed in the connection arm part 52 of the rolling element accommodation belt 50, it is not limited to this, For example, as shown as the modification 3 in FIG. Protrusions 53 projecting toward the connecting arm portion 52 are provided at predetermined intervals in the alignment direction of the balls 46 on the surface of the guide groove 60 facing the pair of connecting arm portions 52 in the width DS direction. Also good. Even with such a configuration, the effects of the present application are achieved. Even in the case where the projection 53 is formed in the guide groove 60 as in the third modification, the projection 53 is directed toward the connection arm 52 on a surface facing at least one of the connection arms 52. If provided as one or more protruding protrusions 53, the effect of the present application is obtained. However, in order to achieve the effect of the present application more suitably, as shown in Modification 3, the guide groove 60 is provided. In addition, it is preferable that protrusions 53 projecting toward the connection arm portion 52 are provided at predetermined intervals in the direction in which the balls 46 are arranged on a surface facing the pair of connection arm portions 52 in the width DS direction.

  In addition, the above-described embodiment and each modified example are not limited to the individual examples described above, and it is possible to appropriately change and combine mutual components as long as the configuration has the effects of the present application. Of course. For example, as shown in FIG. 8 as a modified example 4 as a modified example 4, a protrusion 53 is formed on the surface of the pair of connecting arm portions 52 facing the guide groove 60 in the thickness direction, and a pair of connecting arms A combination is also possible in which the protrusions 53 are formed on the surface of the guide groove 60 where the arm portion 52 and the guide groove 60 face each other in the width direction. That is, if the structure has one or two or more projecting portions projecting toward the other side only on one of the opposing surfaces (there are three sets) of the connecting arm portion 52 and the guide groove 60, the effect of the present application. Can be played.

It is a perspective view which shows the linear guide of one Embodiment of the linear motion guide apparatus provided with the rolling element accommodation belt which concerns on this invention. It is the front view which removed the end cap of the linear guide of FIG. It is sectional drawing in the XX line part in the linear guide of FIG. It is a figure explaining the rolling element accommodation belt which concerns on this invention. It is a figure explaining the modification (modification 1) of a projection part. This explanatory diagram corresponds to FIG. It is a figure explaining the modification (modification 2) of a projection part. This explanatory diagram corresponds to FIG. It is a figure explaining the modification (modification 3) of a projection part. This explanatory diagram corresponds to FIG. It is a figure explaining the modification (modification 4) of a projection part. This explanatory diagram corresponds to FIG.

Explanation of symbols

10 Linear guide (linear motion guide device)
DESCRIPTION OF SYMBOLS 12 Guide rail 14 Rolling element guide surface 16 Slider 17 Slider main body 18 Load rolling element guide surface 20 Rolling element return path 22 End cap 24 Direction change path 26 Rolling element track 28 Endless circulation path 46 Ball (Rolling element)
DESCRIPTION OF SYMBOLS 50 Rolling element accommodation belt 51 Spacer part 52 Connection arm part 53 Protrusion part 55 Ball accommodation hole 60 Guide groove 62 Rolling element row | line | column

Claims (5)

A spacer provided with an infinite circulation path in which a plurality of rolling elements circulate while rolling, having a guide groove in the endless circulation path in the arrangement direction of the rolling elements, and interposed between adjacent rolling elements And a pair of connecting arm portions projecting outward from the end face of the spacer portion and guided by the guide groove A linear motion guide device comprising a rolling element containing belt for aligning the rolling elements in an alignment direction in the endless circulation path,
A linear motion guide device having one or two or more protrusions projecting toward only one of the opposing surfaces of the connecting arm and the guide groove. A plurality of rolling elements is provided in an infinite circulation path that circulates while rolling, and is used in a linear guide device having a guide groove that is continuous in the direction in which the rolling elements are arranged in the infinite circulation path. A pair of spacer portions that are interposed between the spacer portions and the spacer portions on both sides in the width direction of the infinite circulation path, and that project outside the end face of the spacer portions and are guided by the guide grooves. A rolling element containing belt that aligns the rolling elements in the alignment direction in the endless circulation path,
At least one of the pair of connecting arm portions has one or more projecting portions projecting toward the guide groove on a surface facing the guide groove in the thickness direction thereof. Rolling element housing belt for equipment.   3. The linear motion guide rolling device according to claim 2, wherein the projection is provided at a position where the spacer is connected to both sides of the endless circulation path in the width direction. Moving object storage belt.   A linear motion guide device comprising the rolling element housing belt for the linear motion guide device according to claim 2. A spacer provided with an infinite circulation path in which a plurality of rolling elements circulate while rolling, having a guide groove in the endless circulation path in the arrangement direction of the rolling elements, and interposed between adjacent rolling elements And a pair of connecting arm portions projecting outward from the end face of the spacer portion and guided by the guide groove A linear motion guide device comprising a rolling element containing belt for aligning the rolling elements in an alignment direction in the endless circulation path,
The guide groove has one or more protrusions projecting toward the connection arm portion on a surface facing at least one of the pair of connection arm portions in the width direction. apparatus.

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