CN211259373U

CN211259373U - Chain belt type retainer and linear moving device

Info

Publication number: CN211259373U
Application number: CN201921963779.1U
Authority: CN
Inventors: 李思颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-08-14
Anticipated expiration: 2029-11-14

Abstract

The utility model discloses a chain belt type keeps ware and linear movement device, this chain belt type keeps ware to include two flexible chain belts and a plurality of distance piece. The two flexible chain belts are parallel to each other and extend along the same extending direction, and the two flexible chain belts jointly define a central plane. The plurality of spacing pieces are arranged at equal intervals and along the extending direction, each spacing piece is connected between the two flexible chain belts, each spacing piece is divided into a first spacing plate and a second spacing plate by the central surface, the plurality of first spacing plates are all positioned on the same side of the central surface, each first spacing plate comprises a far end far away from the central surface, the far end is provided with an elongated slot, and the elongated slot is perpendicular to the extending direction. The chain belt type holder can be applied to a linear moving device.

Description

Chain belt type retainer and linear moving device

Technical Field

The present invention relates to a retainer and a mechanical device having the retainer, and more particularly to a chain belt type retainer and a linear moving device using the same.

Background

For linear motion devices utilizing ball contact transmission (e.g., linear slide, ball screw, or ball spline), a ball retainer is often used to accommodate a plurality of balls to avoid friction and collision between the balls, so that the linear motion device operates smoothly and noise is reduced.

Generally, the ball retainer has a plurality of spacers arranged at intervals, and the plurality of spacers are coupled to each other by a coupling band, and the plurality of balls are accommodated between the plurality of spacers. However, when the ball retainer is bent (for example, the ball retainer is bent along the ball circulation passage of the linear moving device), the spacers at the bent portion are stressed to increase the distance between the outer sides of the spacers, which results in a situation where the ball retaining force is reduced and the balls are easily loosened.

SUMMERY OF THE UTILITY MODEL

In view of the above, in one embodiment, a chain type retainer for retaining a plurality of rolling bodies is provided, the chain type retainer comprising two flexible chain belts and a plurality of spacers. The two flexible chain belts are parallel to each other and extend along the same extending direction, and the two flexible chain belts jointly define a central plane. The plurality of spacing pieces are arranged at equal intervals and along the extending direction, each spacing piece is connected between the two flexible chain belts, each spacing piece is divided into a first spacing plate and a second spacing plate by the central surface, the plurality of first spacing plates are all positioned on the same side of the central surface, each first spacing plate comprises a far end far away from the central surface, the far end is provided with an elongated slot, and the elongated slot is perpendicular to the extending direction.

In one embodiment, a linear moving device is provided, which includes a guide, a moving member, the above-mentioned chain belt type retainer and a plurality of rolling bodies. The moving part is arranged on the guiding part, a circulating channel is arranged between the guiding part and the moving part, the circulating channel comprises a curved channel, and the curved channel is provided with an outer curved channel wall and an inner curved channel wall. The chain-belt type retainer is accommodated in the circulation passage, and the long-short groove of the first partition plate of each partition member located in the curved groove channel is adjacent to and faces the outwardly curved groove wall. The plurality of rolling bodies are accommodated between the plurality of spacers of the chain belt type cage.

In summary, according to the present invention, the first partition plate distal end of the same side of each of the spacers is provided with the elongated slot, so that when the chain-type retainer is bent, for example, after the chain-type retainer is accommodated in the circulation passage having the curved groove of the linear moving device (e.g., the linear slide rail device, the ball screw device, and the ball spline device), the distal end of each of the spacers located in the curved groove can be forced to open toward the rolling element, thereby increasing the retaining force to a large extent and preventing the rolling element located in the curved groove from separating from the chain-type retainer.

Drawings

Fig. 1 is a perspective view of an embodiment of the chain belt type retainer of the present invention.

Fig. 2 is a partially enlarged perspective view of an embodiment of the chain belt type retainer of the present invention.

Fig. 3 is a side view of an embodiment of the chain belt type retainer of the present invention.

Fig. 4 is a partial cross-sectional view of an embodiment of the chain belt type retainer of the present invention.

Fig. 5 is a partial cross-sectional view of another embodiment of the chain belt type retainer of the present invention.

Fig. 6 is a partial cross-sectional view of another embodiment of the chain belt type retainer of the present invention.

Fig. 7 is a partial cross-sectional view of another embodiment of the chain belt type retainer of the present invention.

Fig. 8 is a perspective view of an embodiment of the linear moving device of the present invention.

Fig. 9 is a partial sectional view of the chain belt type retainer of the present invention applied to a linear moving device.

Fig. 10 is a schematic plan view of the chain belt type retainer of the present invention accommodated in the circulation passage.

Fig. 11 is a partially enlarged view of fig. 10.

Wherein, the reference numbers:

1-chain belt type retainer 10 flexible chain belt

11 spacer 111 first elastic holding piece

112 first end 113 first root

115 second resilient retention tab 116 second end

117 second root 118 first retaining surface

1181 first reinforcing protrusion 1182 reservoir

119 second holding surface 1191 second reinforcing projection

12 first spacer 13 second spacer

14 far end 15 long slot

151 first inclined plane 152 second inclined plane

153 trough bottom edge 16 central portion

17 opposite end 2 linear moving device

20 guide 201 linear track

21 moving part 211 annular channel

22 circulation channel 23 curved channel

231 outside curved groove wall 232 inside curved groove wall

B center plane of rolling element C

L-arrow T1, T2, T3 thickness

Detailed Description

Fig. 1 is a perspective view of an embodiment of the chain belt type retainer of the present invention, fig. 2 is a partially enlarged perspective view of an embodiment of the chain belt type retainer of the present invention, fig. 3 is a side view of an embodiment of the chain belt type retainer of the present invention, and fig. 4 is a partially cut-away view of an embodiment of the chain belt type retainer of the present invention. As shown in fig. 1 to 3, the chain type holder 1 of the present embodiment includes two flexible chain belts 10 and a plurality of spacers 11, the two flexible chain belts 10 are parallel to each other and extend along the same extending direction (for example, in this example, the flexible chain belt 10 extends along the Y-axis direction), the plurality of spacers 11 are arranged at equal intervals along the extending direction of the flexible chain belt 10, and the plurality of spacers 11 are respectively connected between the two flexible chain belts 10.

In some embodiments, the spacers 11 and the two flexible chain belts 10 may be integrally formed to prevent the spacers 11 and the flexible chain belts 10 from being separated from each other by a force during the use process, for example, the spacers 11 and the two flexible chain belts 10 may be integrally formed by Injection molding (Injection molding), but this is not limited thereto.

In some embodiments, the chain belt type cage 1 may be used to hold a plurality of rolling bodies B. As shown in fig. 1 to 4, the chain type retainer 1 is configured to accommodate a plurality of rolling elements B, wherein each rolling element B may be a ball or a roller, in this embodiment, a first retaining surface 118 and a second retaining surface 119 are respectively recessed on two opposite sides of each spacer 11, the first retaining surface 118 and the second retaining surface 119 face the extending direction of the flexible chain 10 (as shown in fig. 2 and 3, the first retaining surface 118 and the second retaining surface 119 face the Y-axis direction), the plurality of rolling elements B are accommodated between the plurality of spacers 11 of the chain type retainer 1, specifically, an accommodating space is formed between the adjacent first retaining surface 118 and the second retaining surface 119 of two spacers 11 adjacent to each other, and each rolling element B is correspondingly accommodated in each accommodating space to be retained and positioned by the first retaining surface 118 and the second retaining surface 119. In addition, in the present embodiment, the first and

second holding surfaces

118 and 119 are spherical surfaces corresponding to the shape of each rolling element B, so that each rolling element B can be held in the accommodating space more stably, but the present invention is not limited thereto, and the first and

second holding surfaces

118 and 119 may have other shapes (e.g., arc-shaped).

In some embodiments, the chain cage 1 can be applied to various linear motion devices that utilize the rolling elements B to circulate, such as ball screws, ball splines, linear slide rails, etc., so as to avoid friction and collision between the rolling elements B, and to make the linear motion device operate more smoothly and reduce noise. In addition, since the plurality of spacers 11 are respectively coupled between the two flexible chain belts 10, the chain-belt type holder 1 can be freely bent to be fittingly accommodated in circulation passages of various shapes.

As shown in fig. 1 to 3, in the present embodiment, two flexible chain belts 10 extend along the same extending direction to jointly define a central plane C (as shown in fig. 1, the central plane C is an XY plane), each spacer 11 is divided into a first spacer plate 12 and a second spacer plate 13 by the central plane C, specifically, each spacer 11 is divided into two block plates (the first spacer plate 12 and the second spacer plate 13) by the central plane C, a plurality of first spacer plates 12 of the plurality of spacers 11 are all located on the same side of the central plane C, a plurality of second spacer plates 13 of the plurality of spacers 11 are located on the other side of the central plane C, wherein the first spacer plates 12 and the second spacer plates 13 of each spacer 11 may have the same or different sizes, for example, in the present embodiment, each spacer 11 is an annular body, the first spacer plates 12 and the second spacer plates 13 of each spacer 11 are divided by the central plane C and are semi-annular, however, each spacer 11 may have another shape, and the present embodiment is not limited thereto.

As shown in fig. 1 to 3, in the present embodiment, each first partition plate 12 of each spacer 11 includes a distal end 14 away from the central plane C, the distal end 14 is opened with an elongated slot 15, and the elongated slot 15 is perpendicular to the extending direction of the flexible chain belt 10, for example, in the present embodiment, the flexible chain belt 10 extends along the Y-axis direction, each elongated slot 15 is recessed in the Z-axis direction at the distal end 14 of each first partition plate 12 and penetrates each first partition plate 12 along the X-axis direction, each elongated slot 15 is configured to divide each first partition plate 12 into a first elastic retaining piece 111 and a second elastic retaining piece 115, wherein each elongated slot 15, each first elastic retaining piece 111 and each second elastic retaining piece 115 can have the following embodiments, which are respectively described in detail below with reference to the drawings.

As shown in fig. 3 and 4, in the present embodiment, each elongated slot 15 of each first partition plate 12 has a V-shaped cross section and has a slot bottom edge 153 and a first inclined surface 151 and a second inclined surface 152 connected to opposite sides of the slot bottom edge 153, a surface of the first elastic retaining piece 111 of each first partition plate 12 on the opposite side of the first inclined surface 151 forms a partial first retaining surface 118, a surface of the second elastic retaining piece 115 of each first partition plate 12 on the opposite side of the second inclined surface 152 forms a partial second retaining surface 119, and thus, when the first elastic retaining piece 111 and the second elastic retaining piece 115 are elastically displaced, the retaining force for the rolling elements B can be changed, for example, when the first elastic retaining piece 111 and the second elastic retaining piece 115 are elastically expanded in a direction away from the slot 15, the first elastic retaining piece 111 and the second elastic retaining piece 115 can respectively approach the rolling elements B to increase the retaining force. In some embodiments, the groove depth of each slot 15 is preferably greater than 1/3 of the diameter of each rolling element B, so that the first elastic retaining piece 111 and the second elastic retaining piece 115 are easily elastically displaced when being stressed to enhance the retaining force of the rolling elements B, however, the size or shape of each slot 15 is merely an example and is not intended to limit the present invention.

In some embodiments, the first inclined surface 151 and the second inclined surface 152 of the cross section of each slot 15 of each first partition plate 12 may be both flat or curved, and the first elastic retaining piece 111 and the second elastic retaining piece 115 may have different thickness variations based on the shape of the cross section of each slot 15. As shown in fig. 4, the first inclined surface 151 and the second inclined surface 152 of each slot 15 of the first partition plate 12 of the present embodiment are both flat surfaces, and the inclined angles of the first inclined surface 151 and the second inclined surface 152 are the same, so that the first elastic retaining piece 111 and the second elastic retaining piece 115 are symmetrically disposed with respect to the slot 15.

Or, as shown in fig. 5 and fig. 6, for the partial cross-sectional view of other embodiments of the chain belt type retainer of the present invention, the first inclined plane 151 and the second inclined plane 152 of each long slot 15 of the first partition plate 12 of the present embodiment are both curved surfaces, and the curvatures of the first inclined plane 151 and the second inclined plane 152 are the same, so that the first elastic retaining piece 111 and the second elastic retaining piece 115 can be symmetrically disposed by using the long slot 15 as a reference, in some embodiments, the first inclined plane 151 and the second inclined plane 152 can be concave curved surfaces or convex curved surfaces, and the type of the curved surfaces can be arc curved surfaces, parabolic curved surfaces or curved surfaces of other shapes. For example, in the embodiment of fig. 5, the first inclined surface 151 and the second inclined surface 152 are both concave curved surfaces, or in the embodiment of fig. 6, the first inclined surface 151 and the second inclined surface 152 are convex curved surfaces, so that the first inclined surface 151 and the second inclined surface 152 can prevent the first elastic retaining piece 111 and the second elastic retaining piece 115 from approaching to each other and tightly fit each other, so as to prevent the distance between the distal ends 14 of the spacers 11 from being too large, thereby achieving an improved retaining force and preventing the rolling elements B from loosening.

However, the above embodiments are only examples, and the first inclined surface 151 and the second inclined surface 152 of each slot 15 may also be inclined surfaces with different shapes, depending on the actual use requirement, for example, the first inclined surface 151 of each slot 15 is a plane surface, and the second inclined surface 152 is a curved surface; alternatively, the first inclined surface 151 of each slot 15 is a curved surface, and the second inclined surface 152 is a flat surface; alternatively, the first inclined surface 151 and the second inclined surface 152 of each elongated groove 15 are both curved surfaces, but the first inclined surface 151 and the second inclined surface 152 have different curvatures.

In some embodiments, the slot bottom edge 153 of the cross section of each slot 15 of each first partition plate 12 may be an arc-shaped bottom edge, a planar bottom edge, or an acute-angled bottom edge. As shown in fig. 4 and 5, the slot bottom edge 153 of each slot 15 is an arc-shaped bottom edge in the present embodiment, or as shown in fig. 6 and 7, the slot bottom edge 153 of each slot 15 is an acute-angled bottom edge in the present embodiment.

As shown in fig. 3, in some embodiments, each second partition plate 13 has an opposite end 17 far away from the distal end 14 of each first partition plate 12, and the thickness of the opposite end 17 is smaller than that of the distal end 14, that is, the distal end 14 of the first partition plate 12 has a larger thickness, so that after the distal end 14 is provided with the slot 15, the first elastic retaining piece 111 and the second elastic retaining piece 115 can still have a certain thickness and have better structural strength.

Referring to fig. 3 and 4, in the present embodiment, each spacer 11 includes a central portion 16 adjacent to the central plane C, the elongated slot 15 does not extend to the central portion 16, the first elastic retaining piece 111 has a first end portion 112 far away from the central portion 16, the second elastic retaining piece 115 has a second end portion 116 far away from the central portion 16, and a total of a thickness T1 of the first end portion 112 and a thickness T2 of the second end portion 116 is greater than a thickness T3 of the central portion 16. Thus, with the above-described structure, even when the first elastic retaining piece 111 and the second elastic retaining piece 115 are forced to relatively approach each other to close the slot 15, the distance between the distal ends 14 of the adjacent spacers 11 is still smaller than the diameter of the rolling element B, so that the rolling element B is effectively prevented from coming off the chain cage 1. In addition, the first elastic retaining piece 111 and the second elastic retaining piece 115 also have better structural strength to avoid friction and collision between the rolling elements B.

As shown in fig. 4, in an embodiment, the first elastic retaining piece 111 has a first root portion 113, the first root portion 113 is adjacent to the central portion 16 relative to the first end portion 112, and the thickness of the first end portion 112 is greater than that of the first root portion 113, the second elastic retaining piece 115 also has a second root portion 117, the second root portion 117 is adjacent to the central portion 16 relative to the second end portion 116, and the thickness of the second end portion 116 is greater than that of the second root portion 117, so that the first elastic retaining piece 111 and the second elastic retaining piece 115 have better structural strength to avoid friction and collision between the rolling elements B. As shown in fig. 6, in another embodiment, the thickness of the first end portion 112 of the first elastic retaining piece 111 may be smaller than the thickness of the first root portion 113, and the thickness of the second end portion 116 of the second elastic retaining piece 115 may be smaller than the thickness of the second root portion 117, so that the first elastic retaining piece 111 and the second elastic retaining piece 115 have better elasticity and can be more attached to the surface of the rolling element B, and the first elastic retaining piece 111 and the second elastic retaining piece 115 have better mobility, thereby facilitating the elastic displacement generated by the force to enhance the retaining force of the rolling element B.

To sum up, the present invention provides a chain type retainer 1 that can be bent by forming the long slot 15 in the distal end 14 of the first partition plate 12 on the same side of each of the spacers 11, for example, after the chain type retainer 1 is accommodated in a circulation passage having a curved channel of a linear moving device (e.g., a linear slide rail device, a ball screw device, and a ball spline device), the first elastic retaining piece 111 and the second elastic retaining piece 115 of each of the spacers 11 located in the curved channel can be expanded toward the rolling element B by applying a force, so as to increase the retaining force substantially and prevent the rolling element B located in the curved channel from being separated from the chain type retainer 1, which will be further described in detail below with reference to different embodiments.

Referring to fig. 8 and 9, fig. 8 is a perspective view of an embodiment of the linear motion device of the present invention, and fig. 9 is a partial sectional view of a chain belt type retainer applied to the linear motion device. The linear moving device 2 includes a guiding element 20 and a moving element 21, and the linear moving device 2 of the present embodiment is a linear sliding rail device, wherein the guiding element 20 is a sliding rail and has two linear rails 201, and the two linear rails 201 are respectively disposed on two opposite sides of the guiding element 20. The moving member 21 is a sliding base and is slidably disposed on the guiding member 20, and at least one circulation channel 22 (here, a plurality of circulation channels 22 are provided, but not limited thereto) is disposed between the guiding member 20 and the moving member 21, and a plurality of chain type retainers 1 mounted with a plurality of rolling elements B are correspondingly accommodated in the circulation channel 22, so that the guiding member 20 and the moving member 21 are in rolling contact state through the rolling elements B, thereby reducing friction force when the guiding member 20 and the moving member 21 perform relative motion, and reducing driving torque. In the present embodiment, the rolling elements B are balls, but may be rollers, which is not limited thereto.

As shown in fig. 9, in the present embodiment, a plurality of annular channels 211 are provided in the moving member 21, and each annular channel 211 corresponds to each linear track 201 of the guide member 20 to form a circulation channel 22 together, as shown in fig. 10, the circulation channel 22 is shown by a dotted line in the present embodiment, and the circulation channel 22 constitutes a return channel of the chain belt type retainer 1, so that the chain belt type retainer 1 and the plurality of rolling elements B accommodated in the chain belt type retainer 1 circulate and return along the circulation channel 22.

As shown in fig. 10 and 11, the chain type cage 1 is wound into a ring structure corresponding to the shape of the circulation passage 22, and each first partition plate 12 of each partition 11 is located at the outer circumference of the ring structure, and each second partition plate 13 of each partition 11 is located at the inner circumference of the ring structure, in the present embodiment, the circulation passage 22 includes two curved grooves 23, each curved groove 23 has an outer curved groove wall 231 and an inner curved groove wall 232, when the chain type cage 1 and the plurality of rolling elements B move along the circulation passage 22 in a circulation and backflow manner, the long-short groove 15 of the first partition plate 12 of each partition 11 moving into each curved groove 23 is adjacent to and faces the outer curved groove wall 231, and the distal end 14 of each partition 11 located in each curved groove 23 is stressed by the chain type cage 1 being bent and opened, so that the first elastic retaining piece 111 and the second elastic retaining piece 115 of each partition 11 are stressed in the direction (B) by the rolling elements B As indicated by arrow L in fig. 11) to achieve enhanced retention to prevent the rolling elements B located at the curved channels 23 from coming off the chain cage 1.

In some embodiments, the linear moving device 2 can also be a ball screw device, and the guide 20 and the moving member 21 are a screw and a nut, respectively. Alternatively, the linear moving device 2 may be a ball spline device, and the guide 20 and the moving member 21 may be a spline shaft and an outer sleeve, respectively. When the linear motion device 2 is a ball screw device or a ball spline device, each rolling element B is a ball.

As shown in fig. 2 and 4, in some embodiments, the first retaining surface 118 of each spacer 11 may further be provided with at least one first reinforcing protrusion 1181, and the second retaining surface 119 may further be provided with at least one second reinforcing protrusion 1191, so as to reinforce the structural strength of each spacer 11, reduce the deformation of each spacer 11 caused by stress, and improve the retaining force of the rolling element B. In addition, the adjacent first and second reinforcing

protrusions

1181 and 1191 of two spacers 11 adjacent to each other contact a rolling element B together, so as to achieve the effect of supporting the rolling element B. In some embodiments, the first and second reinforcing

protrusions

1181 and 1191 may be integrally formed with each spacer 11.

As shown in fig. 2 and 4, in the present embodiment, the first holding surface 118 of each spacer 11 is provided with two annular first reinforcing protrusions 1181 with different sizes, and the two first reinforcing protrusions 1181 are arranged in a concentric circle, and the second holding surface 119 of each spacer 11 is also provided with two annular second reinforcing protrusions 1191 with different sizes, and the two second reinforcing protrusions 1191 are arranged in a concentric circle, but this is not limiting, and the first reinforcing protrusion 1181 and the second reinforcing protrusion 1191 may also be in an annular structure with other shapes, such as an annular structure like a triangle, a quadrangle, a pentagon, or a hexagon, or the first reinforcing protrusion 1181 and the second reinforcing protrusion 1191 may also be in a non-annular structure like a dot, a column, or a block.

As shown in fig. 2, in the embodiment, an oil storage groove 1182 may be correspondingly formed between the first reinforcing protrusion 1181 and the first retaining surface 118, the oil storage groove 1182 is used for storing lubricating oil, so that the lubricating oil can supply oil to the rolling elements B to have a lubricating function when the chain type retainer l moves, and an oil storage groove may also be formed between the second reinforcing protrusion 1191 and the second retaining surface 119, which will not be described in detail herein.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited thereto, and that various changes and modifications can be made without departing from the spirit of the invention.

Claims

1. A chain belt type cage for holding a plurality of rolling bodies, comprising:

the two flexible chain belts are parallel to each other and extend along the same extension direction, and the two flexible chain belts jointly define a central plane; and

the spacing pieces are respectively connected between the two flexible chain belts, each spacing piece is divided into a first spacing plate and a second spacing plate by the central surface, the first spacing plates are all positioned on the same side of the central surface, each first spacing plate comprises a far end far away from the central surface, the far end is provided with a long and short groove, and the long and short groove is perpendicular to the extending direction.

2. The chain belt type retainer as claimed in claim 1, wherein each of the elongated grooves has a groove depth greater than 1/3 of a diameter of each of the rolling bodies.

3. The chain belt type retainer as claimed in claim 1, wherein each of the elongated grooves has a V-shaped cross section.

4. The chain belt type retainer of claim 3, wherein each of the elongated slots has a slot bottom edge and a first inclined surface and a second inclined surface connected to opposite sides of the slot bottom edge, the first inclined surface and the second inclined surface being a flat surface.

5. The chain belt type retainer as claimed in claim 3, wherein each of the elongated slots has a slot bottom edge and a first inclined surface and a second inclined surface connected to opposite sides of the slot bottom edge, the first inclined surface and the second inclined surface being a curved surface.

6. The chain belt type retainer of claim 3, wherein each of said elongated slots has a slot bottom edge and a first and second sloped surface connected to opposite sides of said slot bottom edge, said slot bottom edge being an arc-shaped bottom edge.

7. The chain belt type retainer as claimed in claim 3, wherein each of the elongated slots divides each of the first partition plates into a first elastic retaining piece and a second elastic retaining piece.

8. The chain belt type retainer according to claim 7, wherein each of the spacers includes a central portion adjacent to the central portion, the first elastic retaining piece has a first end portion away from the central portion, the second elastic retaining piece has a second end portion away from the central portion, and a sum of a thickness of the first end portion and a thickness of the second end portion is greater than a thickness of the central portion.

9. The chain belt retainer of claim 8, wherein the first resilient retention tab has a first root portion adjacent the central portion relative to the first end portion, and the first end portion has a thickness greater than a thickness of the first root portion.

10. The chain belt retainer of claim 8, wherein the first resilient retention tab has a first root portion adjacent the central portion relative to the first end portion, the first end portion having a thickness less than a thickness of the first root portion.

11. The chain belt retainer of claim 1, wherein each of the second spacers includes an opposite end remote from the distal end, the opposite end having a thickness less than a thickness of the distal end.

12. A linear motion device, comprising:

a guide member;

a moving member disposed on the guiding member, a circulation passage disposed between the guiding member and the moving member, the circulation passage including a curved channel having an outer curved groove wall and an inner curved groove wall;

the chain belt type retainer as claimed in any one of claims 1 to 11, which is accommodated in the circulation passage with the elongated slot of the first partition plate of each of the partitions located in the curved channel adjacent to and facing the outer curved slot wall; and

and a plurality of rolling bodies accommodated between the spacers of the chain belt type retainer.

13. The linear motion device of claim 12, wherein the linear motion device is a linear slide device, and each rolling element is a ball or a roller.

14. The linear motion device of claim 12, wherein the linear motion device is a ball screw device or a ball spline device, and each rolling element is a ball.