JP2001140879A - Roller connector and roller guide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller connector and a roller guide device capable of smoothly guiding rollers in circulating. SOLUTION: A holding member 3 includes a number of spacer portions 4 disposed between the rollers 2, and a number of end support portions 5 interconnecting both ends of each spacer portion 4 to the ends of adjacent spacer portions 4 along the longitudinal direction of the rollers to support the right and left ends of each roller 2, each of the end support portions 5 having a spherical crown-shaped guide projection 6 engaging a guide groove 13a of an arcuate cross section which is formed in a circulation path 13 for a moving element 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling guide technology used for a linear guide portion of a machine tool, an industrial robot, a precision measuring instrument, and the like, and more particularly to a roller connecting body in which rollers as rolling elements are connected in series. The present invention relates to a roller guide device incorporating the roller link.

[0002]

2. Description of the Related Art As a conventional roller connected body, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 10-110728. As shown in FIG. 13, the roller link described in this publication includes a number of rollers 100,
And a flexible holding member 101 that holds the moving bodies in a state of being aligned with each other in series, and is incorporated in a circulating path of the moving body that constitutes a guide device (not shown) so that the moving body is movable along the track axis. It is configured to support. The holding member 101 is provided with a roller holding hole 102 for holding each roller 100, and a spacer 103 slidably contacting the outer peripheral surface of each roller 100 is provided between adjacent rollers 100.
3, the outer peripheral surface of the roller 100 is sandwiched from the front and rear, and the attitude of the roller 100 is maintained, so that the skew of the roller 100 is prevented.

[0003]

However, in the case of the above-mentioned prior art, the effect of preventing the skew of the roller 100 is improved. However, when the roller 100 passes through the semi-arc-shaped direction changing path portion, the spacer portion is formed. Since the distance between the outer periphery of the roller 103 and the roller 100 is increased while the roller 100 is pulled toward the inner periphery, the posture of the roller 100 is disturbed. For this reason, there has been a problem that the roller 100 strongly contacts a part of the holding member 101 (a part of the roller holding hole 102) in the direction change path, and smooth circulation is hindered.

Further, since the holding member 101 is guided in the guide groove in an elastically deformed state (curved state) in the direction change path, the frictional resistance increases, and the smooth operation of the linear motion guide device is prevented. Become.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a roller connecting body and a roller guiding device capable of smoothly guiding rollers in circulation. It is in.

[0006]

In order to achieve the above object, a roller connecting body according to the first aspect of the present invention comprises a plurality of rollers and a flexible member for holding the rollers in a state of being aligned in series with each other. And a supporting member, wherein the supporting member is incorporated in a circulating path of the moving body constituting the guide device and movably supports the moving body along the track axis. And a number of end support portions that connect the longitudinal ends of the rollers of the adjacent spacers to support the left and right ends of each roller. The end support portion is provided with a guide convex portion that engages with a guide groove having an arc-shaped cross section formed in a circulation path of the moving body.

The invention according to a second aspect is characterized in that both ends of the roller and the end supporting portion are provided with engaging means which engages with concave and convex so as to be rotatable and slidable. As the engagement means, an engagement convex portion may be provided on one of the end surface of the roller and the end support portion, and an engagement concave portion engaging with the engagement convex portion may be provided on the other.

The invention according to claim 3 is characterized in that a concave portion for loosely fitting the end of the roller is provided on the inner surface of the end support.

The invention according to claim 4 is characterized in that the surface of the spacer portion facing the roller side surface is formed as a concave curved surface having a curvature substantially equal to the curvature of the roller side surface.

As a material constituting the holding member described in each of the above-mentioned claims, a synthetic resin such as a fluorinated resin can be used.

The roller may be a spherical roller as described in claim 5 or a cylindrical roller according to claim 6. Further, a chamfer may be provided at an end of each roller.

[0012] The invention according to claim 7 is characterized in that a long orbit axis,
A moving body movable along the orbital axis; and a roller coupling unit incorporated in a circulation path formed in the moving body to support the moving body on the orbital axis. A rolling path in a load region having a rolling surface formed on the moving body facing the rolling surface formed on the shaft, a return path provided in parallel with the rolling path, and both ends of the return path; And a direction changing path formed continuously with the roller connecting member, wherein the roller connecting member is constituted by the roller connecting member according to any one of claims 1 to 7.

[0013]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a roller connected body 1 according to Embodiment 1 of the present invention. The roller connection body 1 includes a plurality of barrel-shaped rollers 2 having a central portion bulging in an arc shape, and a flexible holding member 3 for holding the barrel-shaped rollers 2 in a state of being aligned in series.
And is incorporated in the circulation path 13 of the moving body 12 constituting the roller guide device so as to movably support the moving body 12 along the track axis 11. The holding member 3 is in the form of an end strip, and connects a plurality of spacers 4 disposed between the barrel-shaped rollers 2 and both ends of the adjacent spacers 4 in the longitudinal direction of the rollers. A large number of end support portions 5 for supporting the left and right end portions of the roller 2. The end support portion 5 includes a spherical crown-shaped guide convex portion 6 which engages with a guide groove 13a having an arc-shaped cross section formed in the circulation path 13 of the moving body 12. The holding member 3 is not limited to the end strip shape but may be an endless shape.

At both ends of the barrel-shaped roller 2 and at the end supporting portion 5, there are provided an engaging concave portion 7 and an engaging convex portion 8 as engaging means for engaging in a rotationally slidable manner. In this embodiment, a short conical engagement recess 7 is formed at the center of both left and right end surfaces of each barrel-shaped roller 2 at a position matching the engagement recess 7 at the center of the inner surface of the end support 5. Protrusions 8 are provided.
Needless to say, an engagement projection may be provided on the barrel roller 2 side, and an engagement recess may be provided on the end support section 5 side. In the illustrated example, the shape of the engaging projection 8 and the engaging recess 7 is a short conical shape, but other shapes such as a short cylindrical shape can be adopted.

In the state where the barrel-shaped roller 2 is placed (inserted) in a mold (not shown),
It can be manufactured by insert molding in which molten synthetic resin is injected into a cavity formed in the mold. If such insert molding is employed, the step of incorporating the barrel roller 2 into the holding member 3 becomes unnecessary, and the productivity can be improved.

In order for the barrel-shaped roller 2 to be rotatable between the front and rear and left and right end support portions 5 and 5 and the spacer portions 4 and 4, the barrel roller 2 and the end support portion 5 and the spacer are required. A slight gap between the part 4 is required. Such a gap can be formed by immersing the holding member 3 (of course, the barrel-shaped roller 2 is also integral) in oil or the like after the insert molding.
Can be formed by expanding. In addition, by forming the holding member 3 into an end band as described above,
This connected roller body 3 can be easily mounted on the main body 7.

FIGS. 2 to 7 show an example of the roller guide device 10 in which the above-described roller connection body is incorporated.
The roller guide device 10 includes a long track shaft 11 and a movable body 12 that is movable along the track shaft 11. The above-described roller connected body 1 is connected to a circulation path 13 formed in the movable body 12. It is configured to be incorporated and to support the moving body 12 on the track shaft 11. In this example, a total of four roller linked bodies 1 are incorporated on the upper surface side of the track shaft 11 and one on the left and right side surfaces, and the moving body 12 has four circular passages 1.
3 are provided.

The orbit shaft 11 has a substantially quadrangular cross section, a triangular recess 14 is provided on the left and right sides, and two barrels are rolled on the upper surface, and a barrel roller rolls one by one on the upper slope of the recess 14 on the left and right sides. An arc-shaped rolling surface 15a is formed. The moving body 12 includes a horizontal portion 16a facing the upper surface of the track shaft 11,
A main body 16 having a substantially U-shaped cross-section having a pair of hanging portions 16b, 16b, which hang downward from both left and right ends of the horizontal portion 16a and face each other so as to sandwich the left and right sides of the track shaft 11, is provided. The side covers 17, 17 are fixed to both end surfaces in the length direction 16 by screw members 21. The four circulating paths 13 are two in the horizontal part 16a and one in the left and right hanging part 16b. Is formed. Also, the main body 1
6 is provided with a screw hole 23 for fixing a guided member such as a table, and a side cover 17 is provided on both end surfaces of the main body 16.
A screw hole 24 into which the fixing screw member 21 is screwed is provided. Each of the circulation paths 13 has a rolling surface 15b formed on the main body 16 of the moving body 12 facing the rolling surface 15a formed on the track shaft 11.
And a return passage 18 provided in parallel with the rolling path 15.
And a turning path 19 connecting both ends of the return path 18 and the rolling path 15. The rolling path 15, the return path 18 and the inner wall of the turning path 19, which constitute the circulation path 13, A guide groove 13a into which the guide protrusion 6 of the roller connecting body 1 is fitted is continuously provided over the circumference.

The rolling path 15 has an open U-shaped cross section.
The rolling surface 15b is formed at the bottom thereof, and guide grooves 13a having an arc-shaped cross section are formed on the left and right inner side walls 15c, 15c. The left and right inner side walls 15c, 15c are made of resin bonded to the main body 16, and have guide grooves 13a, 13c.
a is formed by a smooth surface made of resin. The return passage 18 is formed to have a substantially elliptical cross-section in accordance with the cross-sectional shape of the roller connecting body 1, and is constituted by a resin portion 9 b inserted into the inner periphery of a through-hole 20 having a circular cross-section formed in the main body 16. . The upper and lower inner surfaces of the return passage 18 are formed in an arc shape in cross section that follows the outer peripheral shape of the barrel-shaped roller 2, and a guide groove 13 a is provided on the left and right inner side walls.

The direction change path 19 is constituted by a direction change path inner peripheral portion 19a formed on both longitudinal end surfaces of the main body 16 and a direction change path outer peripheral portion 19b provided on the side cover 17. The inner peripheral portion 19a of the direction changing path is formed in a substantially U-shaped cross section on the outer periphery of a semicircularly projecting resin portion 19c joined to the end surface of the main body 16, and the outer peripheral surface of the barrel-shaped roller 2 rolls on the bottom thereof. Alternatively, an arc-shaped guide groove 1 that slides and has an arc-shaped cross-sectional raceway surface on the left and right inner walls is continuous with the guide groove 13a formed on the left and right inner walls of the rolling path 15 and the return passage 18.
3a is provided. As shown in FIG. 7, the side covers 17, 17 have the same outer shape as the end portion of the main body 16, and have a resin portion 19c constituting an inner peripheral portion 19a of the direction change path.
Is provided with a fitting concave portion 17a.
A semicircular turning path outer peripheral portion 19b, 19b is provided on the inner circumference of the main body 16, and the turning path 19 is configured in combination with the turning path inner peripheral portion 19a of the main body 16. Also, the side cover 17
Is provided with a through hole 22 through which a screw member 21 for fixing to the main body 16 is inserted.

Rolling path 1 of the main body 16 of the moving body 12 described above
5 are formed by inserting the metal block of the main body 16 into the mold, and forming the molten resin into the mold by inserting the metal block of the main body 16 into the mold. It can be integrally molded by insert molding for injecting a material.

The linear motion guide device 10 according to the present embodiment
, The upper surface of the track shaft 11 and the horizontal portion 1 of the main body 16
The contact angle of the barrel-shaped roller 2 constituting the roller connected body 1 interposed between the lower surface 6a and the lower surface is set to substantially 90 degrees with respect to a horizontal plane. In addition, the contact angle of the barrel-shaped roller 2 constituting the roller coupling body 1 interposed between the width direction both side surfaces of the track shaft 11 and the inner surfaces of the pair of hanging portions 16b formed on the main body 16 is: It is inclined approximately 30 degrees diagonally downward with respect to the horizontal plane. By setting each contact angle as described above, the linear motion guide device according to the present embodiment,
The load applied vertically downward can be sufficiently supported.

The magnitude of these contact angles can be appropriately determined according to the magnitude of the load to be supported, as shown in FIG. 8, for example. For example, FIG. 8 shows a configuration in which a total of four rows of roller coupling bodies 1 are arranged in two rows in the vertical direction between the left and right side faces of the track shaft 11 and the respective inner side faces of the left and right hanging parts 16b of the moving body 12. FIG. 8A shows the contact angle of the barrel-shaped roller 2 constituting the roller coupling body 1 located on the upper side.
The contact angle of the barrel-shaped roller 2 that constitutes the roller coupling body 1 that is inclined at an angle of approximately 45 degrees obliquely upward from the track shaft 11 side toward the hanging portion 16b with respect to the horizontal plane,
FIG. 8B shows a configuration in which the contact angle of the barrel-shaped roller 2 constituting the roller coupling body 1 located on the upper side is set to be closer to the track axis 11 with respect to the horizontal plane. And the contact angle of the spherical roller 2 constituting the roller coupling body 1 located at the lower side is inclined by approximately 45 degrees obliquely upward with respect to the horizontal plane. Configuration. With this configuration, the loads applied vertically downward and in the horizontal direction can be equally supported, so that the sliding resistance can be equalized and further smooth movement can be obtained.

In the linear motion guide device 10 according to the present embodiment, the track shaft 11 is
Even if the load area of the circulation path 13 is exposed in a state where the roller coupling body 1 is out of contact with the guide groove 6 a, the roller connecting body 1 hangs down from the circulation path 13,
The barrel-shaped roller 2 is prevented from colliding with the surroundings and being damaged without falling off. Further, when the roller connected body 1 circulates in the circulation path 13, the end supporting portion 5 supporting the end surface of the barrel-shaped roller 2 is guided through the guide convex portion 6 engaged with the guide groove 13 a. Each barrel roller 2 supported by the end support 5 circulates along the circulation path 13 without skew. In particular, when passing through the turning path 19, the barrel-shaped roller 2 tends to be drawn toward the inner circumferential side of the turning path 19, and the interval between the spacers 4 changes between the outer circumferential side and the inner circumferential side, so that the barrel-shaped roller 2 has a barrel shape. Although there is a gap between the roller 2 and the outer peripheral surface,
The distance between the end support portions 5 does not change even in the direction change path 19, and the end face of the roller and the end support section 5 are separated from each other by the direction change path 1.
9, the barrel roller 2 is always in contact, and the attitude of the barrel-shaped roller 2 is defined in the direction in which the rotation center axis γ is orthogonal to the traveling direction, and skew can be prevented. In addition, the turning path 19
, Even if the holding member 3 is elastically deformed, the guide protrusions 6 only partially contact the inner peripheral surface of the guide groove 13a.
Friction resistance is small and moves smoothly.

Further, the surface of the spacer 4 facing the side surface of the barrel-shaped roller 2 is formed as a concave curved surface having a curvature substantially equal to the curvature of the side surface of the barrel-shaped roller 2. The barrel-shaped roller 2 is also supported by the spacer 4 to prevent the barrel-shaped roller 2 from falling off the holding member 3.

Further, since the engaging concave portion 7 provided on the barrel-shaped roller 2 and the engaging convex portion 8 provided on the end support portion 5 are engaged with each other, the attitude of the barrel-shaped roller 2 can be changed from this point. It is held and skew is prevented. Therefore, the barrel-shaped roller 2 is
Based on the engagement between the engaging concave portion 7 and the engaging convex portion 8 in addition to the existence of the pair of end support portions 5, the posture is regulated and maintained, and the vehicle shifts (rolls). The engagement of the concave and convex portions also has a function of preventing the barrel-shaped roller 2 from falling off the holding member 3. For this reason, maintenance work and inspection work of the roller connection body 1 become easy. If the barrel-shaped roller 2 is used as the roller, the position of the circulation path 13 is shifted, and
Even if there is an error in the degree of parallelism of the mounting surface to 1 or a return or deformation due to a large load of the roller guide device, the barrel-shaped roller 2 will extend over the entire length of the barrel-shaped roller 2 due to its automatic adjustment action. Line contact with rolling surface. For this reason, the bearing of the load and smooth rolling can be achieved. In addition, the life of the roller is prolonged. Furthermore, the automatic adjustment of the barrel-shaped roller 2 makes it easy to manufacture the rolling surfaces because it is not necessary to improve the accuracy of forming the rolling surfaces 15a and 15b so much.

A lubricant (grease) is provided between each part of the barrel-shaped rollers 2 and 2 and each part of the holding member 3 which are in contact with each other.
Can be interposed. The lubricant is held and circulated between the spacers 4, 4 of the holding member 3 and the adjacent barrel-shaped rollers 2, 2 (so-called grease pockets) via the spacers 4, 4. Therefore, the friction between the barrel-shaped rollers 2 and 2 can be prevented, the lubricant holding performance can be improved, and the durability of the roller connected body 1 as a whole can be improved. By the presence of such a lubricant and the holding member 5 being made of a flexible and slippery material, mutual frictional resistance is prevented from increasing, and the smooth movement of the entire roller connected body 1 is prevented. Can be planned. Next, another embodiment of the present invention will be described. In the following description, only differences from the above-described first embodiment will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

[Second Embodiment] FIG. 9 shows a roller connection body according to a second embodiment of the present invention. The roller connector 1A according to the second embodiment employs a cylindrical roller 2A having an outer peripheral surface formed by a cylindrical surface, instead of the barrel-shaped roller 2 in the structure of the first embodiment. With the use of the cylindrical roller 2A, the rolling surfaces 15a, 15b,
Each of the raceway surface of the direction changing portion 19 and the raceway surface of the return passage 18 is formed as a flat surface.

[Embodiment 3] FIG. 10 shows a roller connection body according to Embodiment 3 of the present invention. The roller connected body 1B according to the second embodiment uses the same barrel-shaped roller 2 as that of the first embodiment, but the end of the barrel-shaped roller 22 is loosely attached to the inner surface of the end support portion 5. Freely fit recess 9 that can be freely fitted
Is provided. Insert the end of the barrel roller 2 into the loose fitting recess 9
, The barrel roller 2 is securely held in its attitude, and the rotation of the rotary shaft of the barrel roller 2 is prevented as much as possible.

[Embodiment 4] FIG. 11 shows a roller connected body according to Embodiment 4 of the present invention. Instead of the barrel-shaped roller 2 according to the first embodiment, a roller linked body 1C according to the fourth embodiment uses a chamfered cylindrical roller 2C having an outer peripheral surface formed of a cylindrical surface and chamfered at both ends. It was what was. A loose fitting recess 9 is provided on the inner side surface of the end supporting portion 5 so that the end of the chamfered cylindrical roller 2C can be freely fitted.

[Other Embodiments] The rollers are not limited to the above-mentioned embodiment, but can be applied to rollers of various shapes. For example, as shown in FIG. 12, the ends are processed into flat surfaces. Rugby ball-shaped roller 2D is also applicable. Further, in each of the above embodiments, the holding member 3 is made of a slippery synthetic resin material such as a fluorinated resin. However, the present invention is not limited to the above embodiments, and other embodiments are possible. It can also be constituted by a material.

[0032]

As described above, the present invention has the following special effects. According to the first aspect of the present invention, the holding member for holding the rollers includes a plurality of spacers disposed between the rollers and both ends in the longitudinal direction of the rollers of the adjacent spacers. A plurality of end support portions connected to each other to support the left and right end portions of each roller, wherein the end support portions engage with guide grooves having an arc-shaped cross section formed in a circulation path of the moving body. By having the portion, even when the load area of the circulation path is exposed in a state where the track axis is displaced from the moving body at the time of assembling work or the like, the guide convex portion is engaged with the guide groove,
The roller coupling body does not hang or fall off from the circulation path, thereby preventing the roller from colliding with the surroundings and being damaged. Also, when the roller connected body circulates in the circulation path,
Since the roller is guided along the guide groove of the circulation path via the guide projection of the end support portion, the roller circulates in the circulation path while being kept in a predetermined posture. In particular, even if the holding member is elastically deformed in the direction change path, each guide protrusion only partially contacts the inner peripheral surface of the guide groove, so that the frictional resistance is small and moves smoothly. Further, when passing through the turning path, the roller tends to be drawn to the inner peripheral side of the turning path, and the interval between the spacers changes on the outer peripheral side and the inner peripheral side, so that a gap is formed between the outer peripheral surface of the roller. However, the distance between the end support portions does not change even in the direction change path, the roller end face and the end support portion always contact even in the direction change path, and the attitude of the roller is
The rotation center axis is defined in a direction orthogonal to the traveling direction,
Roller skew can be prevented.

According to the second aspect of the present invention, since the both ends of the roller and the end support are provided with engagement means for engaging the concave and convex so as to be freely slidable, the skew preventing effect is obtained. With the increase, it is possible to prevent the roller from falling off the holding member.

According to the third aspect of the present invention, the inner side surface of the end supporting portion is provided with a concave portion for loosely fitting the end portion of the roller. The roller can be reliably supported by the section support section.

According to the fourth aspect of the present invention, the surface of the spacer facing the roller side surface is formed as a concave curved surface having a curvature substantially equal to the curvature of the roller side surface. The roller is supported by the seat to prevent the roller from falling off the holding member.

If a barrel-shaped roller is used as the roller, the position of the circulation path is shifted, the parallelism of the mounting surface of the moving body to the orbital axis is increased, and the linear motion guide device has a large load. Even if the barrel roller is returned or deformed, the barrel roller comes into line contact with the rolling surface over the entire length of the barrel roller due to its automatic adjustment action. For this reason, the bearing of the load and smooth rolling can be achieved. In addition, the life of the roller is prolonged. Further, the automatic adjustment of the barrel roller does not require much improvement in the formation accuracy of the rolling surface, so that the manufacturing of the rolling surface is facilitated.

If a cylindrical roller is used as the roller, higher rigidity can be achieved.

According to the seventh aspect of the present invention, a long orbital axis, a moving body movable along the orbital axis, and the moving body incorporated in a circulation path formed in these moving bodies are provided. A roller linking body supported on a track shaft, wherein the circulation path is a load area rolling path having a rolling surface formed on the moving body facing a rolling surface formed on the track axis. 7. A roller connecting body according to claim 1, further comprising: a return path provided in parallel with the rolling path; and a direction changing path formed continuously at both ends of the return path. , The skew of the rollers can be effectively prevented, the smooth movement of the roller linkage can be achieved, and as a result, the linear motion guide device can operate smoothly, and as a result, The overall durability of the linear motion guide device is improved.

[Brief description of the drawings]

FIGS. 1A and 1B show a connected roller according to Embodiment 1 of the present invention, wherein FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view. (D) is a cross-sectional view of a roller circulating path incorporating a roller connecting body, (E) is a partial plan view of the roller holding member of (A), and (F) is (E) of FIG. FIG.

FIG. 2 is a schematic perspective view of an example of a linear motion guide device using the roller connected body of FIG. 1;

FIG. 3 is a longitudinal sectional view of the linear motion guide device of FIG. 2;

4 (A) is a sectional view of a roller circulation path of the apparatus of FIG. 2, and FIG. 4 (B) is a view showing only a roller connecting body of FIG. 4 (A).

5 shows a main body of the moving body in the apparatus shown in FIG. 2; FIG. 5 (A) is a side view, and FIG. 5 (B) is FIG.
FIG. 4 is a cross-sectional view of a circulation path portion of FIG.

FIG. 6 is a plan view of the main body of FIG. 5;

7 shows a side cover of a moving body in the apparatus shown in FIG. 2, wherein FIG. 7 (A) is a rear view, FIG. 7 (B) is a plan view, and FIG. 7 (C) is FIG. ) Is a cross-sectional view taken along the line CC, and FIG. 3D is a cross-sectional view taken along the line DD in FIG.

8 (A) and 8 (B) are longitudinal sectional views showing another embodiment of the linear motion guide device using the roller connecting body of FIG. 1;

FIGS. 9A and 9B show a linked roller body according to Embodiment 2 of the present invention. FIG. 9A is a plan view, FIG. 9B is a front view, and FIG. 9C is a side view. (D) is a partial plan view of the roller holding member of (A), and (E) is (D) of FIG.
(F) is a partial longitudinal sectional view of a state in which the linear motion guide device is assembled to a circulation path.

FIGS. 10A and 10B show a roller connected body according to Embodiment 3 of the present invention, wherein FIG. 10A is a plan view and FIG.
Is a front view, FIG. (C) is a side view, FIG. (D) is a partial plan view of the roller holding member of FIG. (A), and FIG. (E) is a front view of FIG. (F) is a partial longitudinal sectional view of a state where the linear motion guide device is assembled to a circulation path.

FIGS. 11A and 11B show a linked roller body according to Embodiment 4 of the present invention. FIG. 11A is a plan view and FIG.
Is a front view, FIG. (C) is a side view, FIG. (D) is a partial plan view of the roller holding member of FIG. (A), and FIG. (E) is a front view of FIG. (F) is a partial longitudinal sectional view of a state where the linear motion guide device is assembled to a circulation path.

FIG. 12 is a partial longitudinal sectional view of a mounted state of a roller connected body according to another embodiment of the present invention.

FIGS. 13A and 13B are views showing a conventional roller connected body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C Roller connected body 2 Barrel roller 2A Cylindrical roller 2C Chamfered cylindrical roller 3 Holding member 4 Interstitial part 5 End support part 6 Guide convex part 7 Engagement concave part 8 Engagement convex part 9 Free fit concave part DESCRIPTION OF SYMBOLS 10 Roller guide apparatus 11 Track axis 12 Moving body 13 Circulation path 13a Guide groove 14 Depression 15 Rolling path 15a Rolling surface 15b Rolling surface 15c Inner side wall 16 Main body 16a Horizontal portion 16b Hanging portion 17 Side cover 17a Fitting recess 18 Return passage Reference Signs List 18a Resin part 18a Turning path 19a Inner turning part 19b Outer turning part 19c Resin part 20 Through hole 21 Screw member 22 Through hole 23 Screw hole

Claims (7)

[Claims] 1. A moving body, comprising: a plurality of rollers; and a flexible holding member for holding the rollers in a state of being aligned in series with each other, and being incorporated in a circulation path of a moving body constituting a guide device. In the roller connected body which movably supports the roller along the track axis, the holding member includes a plurality of spacers disposed between the rollers, and a length direction of each roller of the adjacent spacers. A plurality of end support portions that connect both end portions to each other to support the left and right end portions of each roller, wherein the end support portions are arc-shaped guide grooves formed in a circulation path of the moving body. And a guide projection that engages with the roller coupling body. 2. The roller connecting body according to claim 1, wherein engagement means is provided at both ends of the roller and the end support portion so as to engage with concave and convex so as to be rotatable and slidable. 3. The roller connecting body according to claim 1, wherein a concave portion for loosely fitting an end of the roller is provided on an inner surface of the end supporting portion. 4. A surface of the end supporting portion of the spacer which faces the roller side surface is formed as a concave surface having a curvature substantially equal to the curvature of the roller side surface. 4. The linked roller body according to any one of the above items. 5. The roller according to claim 1, wherein the roller is a spherical roller.
5. The linked roller body according to any one of the above. 6. The roller according to claim 1, wherein the roller is a cylindrical roller.
5. The linked roller body according to any one of the above. 7. An elongated track shaft, a movable body movable along the track axis, and a roller coupling unit incorporated in a circulation path formed in the movable body to support the movable body on the track axis. Wherein the circulating path is a rolling path in a load region having a rolling surface formed on the moving body facing a rolling surface formed on the track axis, and in parallel with the rolling path. A return path provided, and a direction change path formed continuously at both ends of the return path, wherein the roller connected body is constituted by the roller connected body according to any one of claims 1 to 6. A roller guide device characterized by the above-mentioned.