JP2008128384A - Rolling body holder and linear motion guide device having the same - Google Patents

Abstract

A rolling element holder capable of preventing deterioration in assembling and operability of a linear motion guide device and improving the holding force of the rolling element, and a linear motion guide device including the same. I will provide a.
A slider body 10 straddling a guide rail 2 so as to be relatively movable, two attachment portions 28 respectively joined to both end surfaces of the slider body 10 in the moving direction, and disposed between both attachment portions 28 The attachment portion 28 is connected, and the both attachment portions 28 are joined to both end surfaces of the slider body 10 in the moving direction, respectively, and a plurality of rolling elements 24 loaded in the load rolling path 18 are sandwiched between the slider side. The rolling element holder 6 includes a rolling element rolling groove 14 and a holding part 30 facing the rolling element rolling groove 14, and the holding part 30 is made of a resin holding part 32 formed using a resin material and a metal material. The metal holding portion 34 is formed and extends in the moving direction of the slider body 10.
[Selection] Figure 1

Description

  The present invention relates to a linear motion guide device used in a machine tool, a semiconductor manufacturing apparatus, or the like as a machine element part for guiding a linearly moving object, and a rolling element holder provided therein.

2. Description of the Related Art Conventionally, linear motion guide devices used in machine tools and the like include a guide rail and a slider that is assembled across the guide rail.
Rail-side rolling element rolling grooves extending in the axial direction of the guide rail are formed on both side surfaces of the guide rail.
The slider is composed of a slider main body straddling the guide rail so as to be relatively movable, and an end cap joined to the end surface of the slider main body in the moving direction.

The slider body has a slider-side rolling element rolling groove and a rolling element return path. The slider-side rolling element rolling groove is formed on the inner surface of both sleeves, and is opposed to the rail-side rolling element rolling groove. From the rail-side rolling element rolling groove and the slider-side rolling element rolling groove, a load A rolling path is formed. The rolling element return path penetrates the thick portions of both sleeve portions in the axial direction of the guide rail.
The end cap is formed with a direction changing path that allows the load rolling path and the rolling element return path to communicate with each other, and the rolling element rolling path is formed by the load rolling path, the rolling element return path, and the direction changing path. ing. A plurality of rolling elements made of, for example, steel balls are loaded in the rolling element rolling path, and these rolling elements roll in the rolling element rolling path as the slider moves relative to each other. Infinite circulation.

The linear motion guide device configured as described above includes a rolling element holder attached to a slider, and this rolling element holder holds the rolling element in the rolling element rolling path. That is, the rolling element is prevented from dropping out of the rolling element rolling path by the rolling element cage.
Examples of such rolling element holders include rolling element holders as described in Patent Documents 1 to 3.

As shown in FIG. 7, the rolling element cage as described in Patent Document 1 is formed using only a resin material with respect to the slider 4, and the resin circulation in which the rolling element circulates inside. A road forming body 60 is provided. FIG. 7 is a schematic exploded perspective view of the resin circulation path molded body 60.
The resin circulation path molded body 60 includes a pair of load rolling path constituting parts 62 extending along both side edges of the load rolling path, a rolling element return path constituting part 64 constituting the rolling element return path, and a direction changing path. It is comprised from a pair of direction change path inner periphery guide structure part 66 which comprises an inner periphery guide side. And two connection parts are integrally formed among the four connection parts formed between adjacent constituent parts, and are divided into two parts by the other two connection parts so that they can be incorporated into the slider body 10. This ensures the continuity between the components.

With the rolling element cage 6 having such a configuration, since the resin circulation path molded body 60 is formed using only a resin material, it is possible to form the rolling element cage 6 having a complicated cross-sectional shape. Thus, it becomes possible to increase the holding cost of the rolling elements.
Moreover, the rolling element holder | retainer 6 as described in patent document 2 is provided with the core material 68, the ball | bowl holding | maintenance part 70, and the inner-seal part 72, as shown in FIGS. 8 is a plan view of the rolling element holder 6, FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8, and FIG. 10 is a cross section of the linear motion guide device 1 to which the rolling element holder 6 is mounted. FIG.

  The core material 68 is formed in a substantially rectangular shape using a metal material, and locking portions 74 fixed to the end caps are formed at both ends in the longitudinal direction. The core material 68 is covered with rubber or a synthetic resin material. The ball holding unit 70 holds a large number of rolling elements 24 loaded in the slider-side rolling element rolling grooves 14 at both edges in a state where the ball holding part 70 is mounted on the linear motion guide device 1. The inner seal portion 72 is in contact with the upper surface of the guide rail 2 and the inner surface of the slider 4 facing the guide rail 2 in a state where the inner seal portion 72 is mounted on the linear motion guide device 1.

  With the rolling element holder 6 having such a configuration, the holding force of the rolling element 24 can be improved, and the dustproof property of the linear motion guide device 1 can be improved. For this reason, when the slider 4 is removed from the guide rail 2, the ball holding unit 70 can reliably hold the rolling element 24 in the slider-side rolling element rolling groove 14. On the other hand, when the slider 4 is assembled to the guide rail 2, the inner seal portion 72 is in close contact with the upper surface of the guide rail 2 and the inner surface of the slider 4 facing the guide rail 2, thereby preventing foreign matter from entering the rolling element rolling path 22. Therefore, the operability and durability of the linear motion guide device 1 can be improved. Further, the lubricant disposed in the rolling element rolling path 22 is prevented from being soiled, and the life of the linear motion guiding device 1 can be extended.

Moreover, the rolling element holder | retainer as described in patent document 3 is provided with the holder main body 76 and a pair of inner seal part 72, as shown in FIG.11 and FIG.12. 11 is a perspective view of the rolling element holder 6, and FIG. 12 is a front view of the linear motion guide device 1 showing the mounted state of the rolling element holder 6.
The cage main body 76 is formed by bending a rectangular plate formed of a metal material at both ends in the lateral direction substantially vertically and in the same direction. The pair of inner seal portions 72 are attached to the inner surface of the bent portion of the cage main body 76 so as to be in contact with the upper surface of the guide rail 2, and bend the metal thin plate into an approximately L shape at an angle of less than 90 degrees. Is formed.

The rolling element holder 6 having such a configuration has the same effects as the rolling element holder 6 described in Patent Document 2 described above, and is excellent in mass productivity because it is made of sheet metal. It becomes possible to produce with.
Japanese Patent No. 3571911 (FIG. 41) Japanese Patent No. 3346029 (FIGS. 1 to 3) Japanese Patent No. 3412266 (FIGS. 4 and 6)

However, since the rolling element retainer as described in Patent Document 1 is formed using only a resin material, the rigidity is inferior to a rolling element retainer formed using a metal material. . Therefore, there is a possibility that the gap formed between the guide rail and the slider is limited. In particular, in a small linear motion guide device, there is a possibility that the holding force of the rolling element is insufficient.
In addition, it is possible to increase the thickness of the rolling element cage by increasing the concave portion on the side surface of the guide rail and reducing the thickness of the upper surface of the slider. There is a possibility that the pullability of the guide rail from the slider is deteriorated and the rigidity is lowered due to insufficient strength of the slider. Furthermore, in the rolling element holder as described in Patent Document 1, since the rolling element holder and the return guide are integrally molded, the mold configuration becomes complicated and the manufacturing cost increases. Manufacturing work may be difficult.

  Moreover, since the rolling element holder | retainer as described in patent document 2 inserts and fixes the both ends of the rolling element holder | retainer formed using the metal material and the resin material to an end cap, a slider main body It is difficult to fix the rolling element holder when the rolling element is loaded from the open portion formed on the end surface in the moving direction of the slider body before the end cap is attached to the slider. Therefore, the assembling property of the linear motion guide device is reduced, and when the rolling element is loaded from the opening of the rolling element holder after the end cap is mounted on the slider body, the assembling property of the linear motion guiding device is improved. There is a risk that it may be difficult to achieve both improvement in the holding power of the rolling elements.

Further, in the rolling element holders as described in Patent Document 2 and Patent Document 3, the seal part formed integrally with the metal rolling element holder is located at a position away from the support part of the rolling element holder. Often placed. For this reason, when the slider is attached to the guide rail, the arrangement of the rolling elements is often disturbed and the rolling element cage is often deformed, and the lip portion of the inner seal portion, which is thinner than the other portions, is excessive in the guide rail. There is a possibility that it will be damaged by being pressed with a strong force, and there is a risk that the frictional force generated at the time of attachment will increase and the assemblability of the linear motion guide device will deteriorate.
The present invention has been made paying attention to the above-described problems, and it is possible to prevent a decrease in assembly and operability of the linear motion guide device and to improve the holding force of the rolling elements. It is an object of the present invention to provide a rolling element holder capable of performing the above and a linear motion guide device including the same.

In order to solve the above-mentioned problems, among the present inventions, the invention described in claim 1 is a guide rail having rail-side rolling element rolling grooves extending in the axial direction on both sides, and relative movement to the guide rail. A slider body that has a slider-side rolling element rolling groove that is straddled and is opposed to the rail-side rolling element rolling groove, and is formed from the rail-side rolling element rolling groove and the slider-side rolling element rolling groove. A plurality of rolling elements loaded in the loaded rolling path, and a linear motion guide device having
Two attachment portions respectively joined to both ends of the slider body in the moving direction;
A rolling element holder comprising: a holding portion that connects the both attachment portions and sandwiches the rolling element therebetween and faces the slider-side rolling element rolling groove;
The holding portion is composed of a resin holding portion formed using a resin material and a metal holding portion formed using a metal material and extending in the moving direction of the slider body. It is characterized by.

According to the present invention, the holding part provided in the rolling element holder is formed of a resin holding part formed using a resin material and a metal material, and the metal holding part extends in the moving direction of the slider body. And a holding part.
For this reason, the holding cost of the rolling element is increased by the resin-made holding part that can be formed into a complicated shape, and the deformation that occurs in the resin-made holding part by the metal holding part having higher rigidity than the resin-made holding part. Can be suppressed.

As a result, when the cross-sectional area along the longitudinal direction is the same as that of the rolling element cage in which the holding portion has only the resin holding portion, it is possible to suppress deformation that occurs in the rolling element cage. Thus, it becomes possible to prevent the operability of the linear motion guide device from being lowered, and to improve the holding force of the rolling elements.
Moreover, when the deformation | transformation which arises in a rolling element holder is the same grade compared with the rolling element holder which a holding part is provided only with resin-made holding parts, the cross-sectional area along the longitudinal direction of a holding part is reduced. It becomes possible. For this reason, the deterioration of the pull-out property of the guide rail from the slider and the reduction of the rigidity due to the insufficient strength of the slider, which are caused by forming a concave portion on the side surface of the guide rail or by reducing the thickness of the upper surface of the slider. It becomes possible to prevent.

Next, the invention described in claim 2 is the invention described in claim 1, wherein the metal holding portion is formed separately from the resin holding portion,
The resin holding part has a resin holding part side fitting part into which at least a part of the metal holding part is fitted.
According to the present invention, since the metal holding portion and the resin holding portion are formed separately, the gold generated when the resin holding portion and the metal holding portion are integrally formed to constitute the holding portion. It is possible to suppress the complexity of the mold configuration, the increase in manufacturing cost, and the difficulty in manufacturing work. In addition, it is possible to reduce the deformation of the resin holding part by the metal holding part having rigidity higher than that of the resin holding part. Therefore, the shape of the resin holding part suitable for the molding of the holding part should be selected. Thus, it becomes possible to improve the productivity of the rolling element cage.

  Further, since the resin holding part has a fitting part into which at least a part of the metal holding part is fitted, the resin holding part formed separately and the metal holding part are combined and integrated. It becomes easy to configure. For this reason, before attaching the end cap to the slider body, the metal holding part is fixed to the resin holding part to improve the rigidity of the holding part, and the open part formed on the end surface in the moving direction of the slider body Therefore, it becomes easy to load the rolling elements, and the assembling property of the linear motion guide device can be improved.

Next, the invention described in claim 3 is the invention described in claim 2, wherein the guide rail is installed between the resin holding part and the metal holding part and more than the metal holding part. A sealing member provided with a lip portion slidably contacting the guide rail on the installation surface side,
The metal holding portion is arranged near the lip portion and closer to the installation surface than the slider-side rolling element rolling groove.

According to the present invention, the lip portion provided in the seal member and slidably in contact with the guide rail is installed between the resin holding portion and the metal holding portion and the guide rail is installed rather than the metal holding portion. It is arrange | positioned at the surface side and the metal holding | maintenance part is arrange | positioned in the installation surface side rather than the lip | rip part and the slider side rolling element rolling groove.
For this reason, when the slider is attached to the guide rail, even if the arrangement of the rolling elements is disturbed and the resin holding portion is deformed, there is a backup of the metal holding portion and is not easily affected by this deformation. Therefore, it becomes possible to suppress the deformation of the lip portion.
As a result, it is possible to suppress damage caused by the lip portion that is thinner than the other portions being pressed against the guide rail with an excessive force. Further, it is possible to prevent an increase in frictional force generated when the slider is attached to the guide rail, and it is possible to improve the assemblability of the linear motion guide device.

Next, the invention described in claim 4 is the invention described in claim 3, wherein the seal member is coupled to at least one of the resin-made holding part and the metal-made holding part. It is a feature.
According to the present invention, since the seal member is coupled to at least one of the resin holding portion and the metal holding portion, it is possible to reduce the number of assembling work and improve the assembling property of the linear motion guide device. It becomes possible to make it.

Next, the invention described in claim 5 is a linear motion guide device including the rolling element holder described in any one of claims 1 to 4.
According to the present invention, since it is a linear motion guide device provided with the rolling element holder according to any one of claims 1 to 4, it is possible to prevent a decrease in assembly and operability of the linear motion guide device. It is possible to improve the holding force of the rolling elements.

Next, the invention described in claim 6 is the invention described in claim 5, wherein at least a part of the metal holding portion is fitted to the end cap joined to the end surface in the moving direction of the slider body. It has the end cap side fitting part to match.
According to the present invention, the end cap has the end cap side fitting portion into which at least a part of the metal holding portion is fitted. For this reason, since the metal holding part is supported by the end cap joined to the end surface of the slider body in the moving direction, it becomes possible to increase the restraining force of the metal holding part, and the holding force of the metal holding part can be increased. It can be increased. Moreover, it becomes possible to restrain the movement of the metal holding part in the longitudinal direction.

Next, the invention described in claim 7 is the invention described in claim 5 or 6, wherein the slider body includes two or more rows of the slider-side rolling element rolling grooves.
The metal holding portion is an installation surface on which at least the guide rail is installed among the plurality of rows of slider-side rolling element rolling grooves in a state where the both attachment portions are joined to both end surfaces of the slider body in the moving direction. The slider-side rolling element rolling groove on the side is opposed to the rolling element in between.

According to the present invention, the slider body is provided with two or more rows of slider-side rolling element rolling grooves, and the metal holding portions are arranged in a plurality of rows in a state where both mounting portions are respectively joined to both end surfaces of the slider body in the moving direction. Of the slider-side rolling element rolling grooves, the slider-side rolling element rolling groove and the rolling element are opposed to each other on the installation surface side where at least the guide rail is installed.
For this reason, the metal holding part is a slider-side rolling element rolling groove on the installation surface side where at least the guide rail is installed among the plurality of rows of slider-side rolling element rolling grooves, that is, another slider-side rolling element rolling groove. Compared with the groove, it is arranged in the slider-side rolling element rolling groove that is limited in space, so that it is possible to improve the degree of design freedom related to the shape of the guide rail and the assembly dimensions of the linear guide device. .

  ADVANTAGE OF THE INVENTION According to this invention, while being able to prevent the assembly property of a linear motion guide device and the fall of operativity, it becomes possible to improve the retention strength of a rolling element.

  Next, a first embodiment of the present invention will be described with reference to the drawings. In this embodiment, a linear motion guide device using a steel ball as a rolling element will be described as an example. However, the configuration of the linear motion guide device is not limited to this. A configuration using rollers may also be used. Further, in this embodiment, a linear motion guide device including two rolling elements rolling paths on the left and right sides will be described as an example, but the configuration of the linear motion guide device is not limited to this, for example, It is good also as a structure provided with the rolling element rolling path of 1 row on either side, and good also as a structure provided with the rolling element rolling path of 3 or more rows on the left and right.

First, the configuration of the present embodiment will be described with reference to FIGS. 1 to 3. In addition, about the structure similar to the conventional linear motion guide apparatus mentioned above, the same code | symbol is attached | subjected and demonstrated.
FIG. 1 is a diagram showing a linear motion guide device 1 of the present embodiment.
As shown in FIG. 1, the linear motion guide device 1 includes a guide rail 2, a slider 4 assembled across the guide rail 2, and a rolling element holder 6 attached to the slider 4. In FIG. 1, the slider 4 and the guide rail 2 are partially cut away for explanation.

Rail-side rolling element rolling grooves 8 extending in the axial direction of the guide rail 2 are formed on both side surfaces of the guide rail 2. Moreover, the recessed part 9 extended in the axial direction of the guide rail 2 is formed in the position which opposes a part of rolling-element holder 6 in the both sides | surfaces of the guide rail 2. As shown in FIG.
The slider 4 is composed of a slider main body 10 that is supported on the guide rail 2 so as to be relatively movable, and two end caps 12 that are joined to both end surfaces of the slider main body 10 in the moving direction. In addition, in FIG. 1, the state which partially cut off the end cap 12 is shown for description. In FIG. 1, only one of the two end caps 12 is shown.

  The slider body 10 has a slider-side rolling element rolling groove 14 and a rolling element return path 16. The slider-side rolling element rolling groove 14 is formed on the inner side surfaces of both sleeve portions and faces the rail-side rolling element rolling groove 8. The rail-side rolling element rolling groove 8 and the slider-side rolling element rolling groove 8 14, a load rolling path 18 is formed. The rolling element return path 16 penetrates the thick portions of both sleeve portions in the axial direction of the guide rail 2.

  The end cap 12 is formed with a direction changing path 20 that allows the load rolling path 18 and the rolling element return path 16 to communicate with each other. The load rolling path 18, the rolling element return path 16, and the direction changing path 20 form a rolling path. A moving body rolling path 22 is formed. In the rolling element rolling path 22, a plurality of rolling elements 24 made of, for example, steel balls are loaded, and the rolling element rolling paths 22 are associated with the relative movement of the slider 4. Infinite circulation while rolling inside.

Further, the end cap 12 has an end cap side fitting portion (not shown) in which a metal holding portion side protruding portion 26 to be described later is fitted on a surface facing the slider body 10.
The rolling element holder 6 includes an attachment part 28 and a holding part 30.
Two attachment portions 28 are formed in a plate shape, and two attachment portions 28 are provided for one rolling element holder 6, and these attachment portions 28 are respectively joined to both end surfaces of the slider body 10 in the moving direction. In FIG. 1, only one of the two attachment portions 28 is shown.

The holding part 30 is disposed between the two attachment parts 28 and connects the two attachment parts 28. With the two attachment parts 28 joined to both end faces in the moving direction of the slider body 10, the rolling element 24 is interposed therebetween. It faces the slider-side rolling element rolling groove 14 with being sandwiched.
The holding unit 30 includes a resin holding unit 32 and a metal holding unit 34. Detailed description regarding the resin-made holding part 32 and the metal-made holding part 34 will be described later.

FIG. 2 is a view showing the resin holding portion 32 and the attachment portion 28.
As shown in FIG. 2, the resin-made holding part 32 is formed by integral molding together with both the mounting parts 28a and 28b by, for example, injection molding using a resin material, so that both the mounting parts 28a and 28b are formed. It is connected. In this embodiment, the case where an elastomer is used as an elastic resin material will be described as an example.

  Moreover, the resin-made holding part 32 has the resin-made holding part side fitting part 38 with which the metal holding part side plane part 36 mentioned later is fitted. The resin-made holding portion side fitting portion 38 is formed in a groove shape extending along the slider-side rolling element rolling groove 14. Of the two upper and lower rows of slider-side rolling element rolling grooves 14, the guide rail 2 is formed below the slider-side rolling element rolling groove 14 on the installation surface 40 side, that is, the lower slider-side rolling element rolling groove 14. Further, the resin holding portion side fitting portion 38 is formed such that the vertical width thereof is narrower than the thickness of the metal holding portion side flat portion 36.

Both attachment portions 28a and 28b each have a load rolling path forming portion 42 having a shape through which a rolling element can pass at a position corresponding to the load rolling path, and at a position corresponding to the rolling element return path. The rolling element return path forming hole 44 has a shape through which the rolling element can pass.
The elasticity of the resin holding part 32 is such that the position of the resin holding part 32 relative to the slider-side rolling element rolling groove 14 is such that both the attachment parts 28a and 28b are joined to both end surfaces of the slider body 10 in the moving direction. It is set to a value that is a position where the rolling element 24 is held between the resin holding portion 32 and the slider-side rolling element rolling groove 14.

FIG. 3 is a view showing the metal holding portion 34.
The metal holding part 34 is formed using, for example, a metal material such as stainless steel, and is formed separately from the resin holding part 32. Further, the metal holding part 34 is formed by curving a single plate-like member extending in the moving direction of the slider body 10, and includes a sloped part 46, a metal holding part side plane part 36, The metal holding part side protrusion part 26 is provided.

The slope portion 46 protrudes to the guide rail 2 side from the metal holding portion side flat portion 36 in a state where the metal holding portion side flat portion 36 is fitted to the resin holding portion side fitting portion 38, and resin The slider-side rolling element rolling grooves 14 of the upper and lower two rows of the slider-side rolling element rolling grooves 14 are opposed to the lower slider-side rolling element rolling grooves 14 with the product-made holding portion 32 interposed therebetween.
The metal holding part side plane part 36 is fitted to the resin holding part side fitting part 38, and the lower slider side rolling element rolling groove of the upper and lower two rows of slider side rolling element rolling grooves 14 is provided. It is disposed below the groove 14.
The metal holding part side protrusions 26 are formed at both ends in the longitudinal direction of the slope part 46 and the metal holding part side flat part 36, and the metal holding part side flat part is connected to the resin holding part side fitting part 38. In a state where 36 is fitted, it protrudes from both end surfaces in the moving direction of the slider body 10 rather than the resin holding portion side fitting portion 38.

Next, with reference to FIG. 1 to FIG. 3, functions and effects of the linear guide device 1 having the above-described configuration will be described.
Hereinafter, the assembly work of the linear motion guide device 1 including the rolling element holder 6 described above will be described.
First, the resin holding portion 32 is bent to widen the space between the mounting portions 28a and 28b, and the mounting portions 28a and 28b are joined to both end surfaces in the moving direction of the slider body 10, respectively. At this time, the load rolling path forming portion 42 is disposed at a position corresponding to the load rolling path 18, and the rolling element return path forming hole 44 is disposed at a position corresponding to the rolling element return path 16.

Then, the metal holding portion side flat portion 36 is fitted to the resin holding portion side fitting portion 38, and the metal holding portion side protruding portion 26 is made to be closer to the slider body 10 than the resin holding portion side fitting portion 38. The resin holding portion 32 and the metal holding portion 34 are integrated with each other in a state of protruding from both end surfaces in the moving direction.
At this time, since the resin holding part side fitting part 38 is formed so that the vertical width thereof is narrower than the thickness of the metal holding part side flat part 36, the resin holding part side fitting part The metal holding part side plane part 36 fitted to 38 is pressed and sandwiched by the resin holding part 32 from above and below.

After the rolling element holder 6 is attached to the linear motion guide device 1, one of the two end caps 12 is joined to the end surface of the slider body 10 in the moving direction. At this time, the metal holding portion side protruding portion 26 is fitted into the end cap side fitting portion of the end cap 12.
When the end cap 12 is joined to the end surface of the slider body 10 in the moving direction, the space formed by the rolling element return path 16, the direction changing path 20, the slider side rolling element rolling groove 14 and the holding portion 30 is approximately. A U-shaped rolling element passage is formed.

After the substantially U-shaped rolling element passage is formed, a load rolling path formed by the attachment portion 28 joined to the end face on the side where the end cap 12 is not joined, of both end faces in the moving direction of the slider body 10 is formed. The rolling element 24 is loaded into the rolling element passage from the portion 42 or the rolling element return path forming hole 44.
At this time, the metal holding portion side flat portion 36 is fitted to the resin holding portion side fitting portion 38, and the metal holding portion side protruding portion 26 is fitted to the end cap side fitting portion. Therefore, the resin holder 32 and the metal holder 34 are firmly integrated. For this reason, the rigidity of the resin-made holding part 32 is improved, and the rolling element 24 loaded in the space formed by the slider-side rolling element rolling groove 14 and the holding part 30 becomes the slider-side rolling element rolling. It is prevented from falling off between the groove 14 and the holding part 30.

After loading the required number of rolling elements 24 into the rolling element passage, the end cap 12 is joined to the end face of the slider main body 10 in the direction of movement where the end cap 12 is not joined. Form.
Then, the slider 4 is attached to the guide rail 2, and the assembling work of the linear guide device 1 is finished. Before loading the rolling element 24 into the rolling element passage, the slider body 10 to which only one end cap 12 is joined is attached to the guide rail 2, and the slider body 10 attached to the guide rail 2 and one of the slider bodies 10 are attached. After loading the rolling element 24 into the rolling element passage of the end cap 12, the end cap 12 may be joined to the end face on the side where the end cap 12 is not joined, of both end faces in the moving direction of the slider body 10. .

Therefore, in the linear motion guide device 1 of the present embodiment, the holding part 30 provided in the rolling element holder 6 is formed using a resin-made holding part 32 formed using a resin material and a metal material. At the same time, it is composed of a metal holding portion 34 extending in the moving direction of the slider body 10.
For this reason, the holding allowance of the rolling element 24 is increased by the resin-made holding part 32 which is lower in rigidity than the metal-made holding part 34 and can be formed into a complicated shape as compared with the metal holding part 34. Is possible. In addition, the metal holding part 34 having higher rigidity than the resin-made holding part 32 can suppress deformation generated in the resin-made holding part 32, in particular, bending deformation.

As a result, in comparison with the rolling element holder 6 in which the holding part 30 includes only the resin holding part 32, the deformation generated in the rolling element holder 6 is suppressed when the cross-sectional area along the longitudinal direction is the same. As a result, it is possible to prevent the operability of the linear motion guide device 1 from being lowered, and to improve the holding force of the rolling elements 24.
Moreover, if it is the linear motion guide apparatus 1 of this embodiment, compared with the rolling element holder 6 with which the holding | maintenance part 30 is provided only with the resin-made holding parts 32, the deformation | transformation which arises in the rolling element holder 6 is the same grade. In this case, the cross-sectional area along the longitudinal direction of the holding unit 30 can be reduced.

For this reason, deterioration of the pullability of the guide rail 2 from the slider 4 and reduction in rigidity due to insufficient strength of the slider 4 caused by forming the concave portion 9 large or reducing the thickness of the upper surface of the slider 4. Can be prevented.
Further, in the linear motion guide device 1 of the present embodiment, the metal holding part 34 and the resin holding part 32 are formed separately, and therefore the resin holding part 32 and the metal holding part 34 are provided. It is possible to suppress the complexity of the mold configuration, the increase in the manufacturing cost, and the difficulty in the manufacturing work, which occur when the holding unit 30 is formed by integral molding.

In addition, since the metal holding part 34 having higher rigidity than the resin holding part 32 can suppress deformation generated in the resin holding part 32, the resin holding part 32 suitable for molding the holding part 30. The shape of the rolling element holder 6 can be improved.
Further, in the linear motion guide device 1 of the present embodiment, the resin holding portion 32 is fitted with the resin holding portion side fitting portion 38 into which the metal holding portion side flat portion 36 of the metal holding portion 34 is fitted. Therefore, it is easy to configure the holding unit 30 by combining the resin holding unit 32 and the metal holding unit 34 formed separately.

Therefore, before attaching the end cap 12 to the slider body 10, the metal holding portion 34 is fixed to the resin holding portion 32 to improve the rigidity of the holding portion 30, and the end surface of the slider body 10 in the moving direction It becomes easy to load the rolling elements 24 from the opening formed in the above, and the assemblability of the linear motion guide device 1 can be improved.
Further, in the linear motion guide device 1 of the present embodiment, the metal holding portion 34 has the metal holding portion side protruding portion 26 that protrudes in the moving direction of the slider body 10 from the mounting portion 28, and the end cap. 12 has an end cap side fitting portion into which the metal holding portion side protruding portion 26 is fitted.

For this reason, since the metal holding part 34 is supported by the end cap 12 joined to the moving direction end surface of the slider main body 10, it becomes possible to increase the restraining force of the metal holding part 34, and the metal holding part The holding force of 34 can be increased.
Further, in the linear motion guide device 1 of the present embodiment, the slider body 10 includes two or more rows of slider-side rolling element rolling grooves 14, and the metal holding portion 34 includes both attachment portions 28 a, 28b is opposed to both ends of the slider main body 10 in the moving direction, with the lower slider-side rolling element rolling grooves 14 and the rolling elements 24 among the plurality of rows of slider-side rolling element rolling grooves 14 facing each other. To do.

  For this reason, the metal holding part 34 is the slider side rolling element rolling groove 14 on the installation surface side where at least the guide rail 2 is installed among the plurality of rows of slider side rolling element rolling grooves 14, that is, the other slider side. Compared with the rolling element rolling groove 14, the degree of freedom in design related to the shape of the guide rail 2 and the assembly dimensions of the linear guide apparatus 1 is arranged in the slider-side rolling element rolling groove 14 that is limited in space. Can be improved.

Further, in the linear guide device 1 according to the present embodiment, the resin holding portion side fitting portion 38 is formed such that the vertical width thereof is narrower than the thickness of the metal holding portion side flat portion 36. Therefore, the metal holding part side plane part 36 fitted to the resin holding part side fitting part 38 is pressed and sandwiched by the resin holding part 32 from above and below.
For this reason, it becomes possible to increase the restraining force of the metal holding part 34 by the resin-made holding part 32, and to increase the holding force of the metal holding part 34.

  In the linear motion guide device 1 of the present embodiment, the resin holding portion side fitting portion 38 is formed in a groove shape extending along the slider side rolling element rolling groove 14, and the metal holding portion 34 is formed. The metal holding portion side plane portion 36 is formed in a flat plate shape by a single plate member, but is not limited to this. That is, for example, a slit is formed in the metal holding part side flat part 36, and a rib having a shape corresponding to the slit is formed in the resin holding part side fitting part 38, so that the resin holding part 32 and the metal part are made. It is good also as a structure which can suppress the displacement along the moving direction of the slider main body 10 with the holding | maintenance part 34. FIG.

  Further, in the linear motion guide device 1 of the present embodiment, the metal holding portion side protrusions 26 are formed at both ends in the longitudinal direction of the slope portion 46 and the metal holding portion side plane portion 36, and the end cap 12 is made of metal. Although it was set as the structure which has an end cap side fitting part which the holding | maintenance part side protrusion part 26 fits, it is not limited to this. That is, the metal holding part side protrusions 26 are not formed at both ends in the longitudinal direction of the slope part 46 and the metal holding part side plane part 36, for example, at least one of the slope part 46 and the metal holding part side plane part 36. A recess may be formed at both ends in the longitudinal direction, and a projecting portion that fits into the recess may be formed on the joint surface of the end cap 12 with the slider body 10.

In addition, the metal holding part side protrusions 26 are formed at both ends in the longitudinal direction of the slope part 46 and the metal holding part side flat part 36, and the end caps into which the metal holding part side protrusions 26 are fitted. It is good also as a structure which the end cap 12 has a side fitting part.
Furthermore, in the linear motion guide device 1 of the present embodiment, the resin holding portion 32 is formed by integral molding together with the both attachment portions 28a and 28b, thereby connecting the both attachment portions 28a and 28b. However, the present invention is not limited to this. That is, for example, the resin holding portion 32 is formed separately from the mounting portions 28a and 28b, and the resin holding portion 32 is bonded to the both mounting portions 28a and 28b. It is good also as a structure which has connected the attaching parts 28a and 28b.

  Further, in the linear motion guide device 1 of the present embodiment, the metal holding portion 34 is formed by a single plate-like member extending in the moving direction of the slider body 10, but the present invention is not limited to this. Each of the metal holding portions 34 may be formed by a plurality of plate-like members that extend in the moving direction of the slider body 10. In this case, the resin holding portion side fitting portion 38 may be constituted by a plurality of grooves.

  Further, in the linear motion guide device 1 of the present embodiment, the resin holding portion side fitting portion 38 has the lower slider side rolling element rolling groove 14 out of the two upper and lower rows of slider side rolling element rolling grooves 14. It forms below. Therefore, the upper and lower two rows of sliders with the metal holding portion 34 sandwiched between the resin holding portions 32 with the metal holding portion side flat portion 36 fitted to the resin holding portion side fitting portion 38. Of the side rolling element rolling grooves 14, the lower slider side rolling element rolling grooves 14 are opposed to each other, but the present invention is not limited to this. That is, the resin holding portion side fitting portion 38 is formed above the lower slider side rolling element rolling groove 14, and the metal holding portion 34 is made of metal to the resin holding portion side fitting portion 38. Of the two upper and lower rows of slider-side rolling element rolling grooves 14, with the holding-part-side flat portion 36 fitted, the upper slider-side rolling element rolling groove 14 and It is good also as a structure which has opposed. Further, the resin holding portion side fitting portion 38 is formed above and below the lower slider side rolling element rolling groove 14 in the upper and lower two rows of slider side rolling element rolling grooves 14, and is made of metal. With the holding part 34 in a state where the metal holding part side flat part 36 is fitted to the resin holding part side fitting part 38, the slider side rolling element rolling in the upper and lower rows with the resin holding part 32 interposed therebetween. It is good also as a structure facing the moving groove 14. FIG.

  Further, in the linear motion guide device 1 of the present embodiment, the resin holding portion side fitting portion 38 is formed so that the vertical width thereof is narrower than the thickness of the metal holding portion side flat portion 36. However, the present invention is not limited to this, and the resin holding portion side fitting portion 38 may be formed so that its vertical width is the same as the thickness of the metal holding portion side flat portion 36. However, as in the linear motion guide device 1 of the present embodiment, the resin holding portion side fitting portion 38 is formed so that the vertical width thereof is narrower than the thickness of the metal holding portion side flat portion 36. This is preferable because the holding force of the metal holding portion 34 can be increased.

Next, a second embodiment of the present invention will be described with reference to the drawings. In addition, since the linear motion guide apparatus of this embodiment is the structure similar to 1st embodiment mentioned above except the structure of a rolling element holder, the following description demonstrates the structure of only a rolling element holder. .
First, the configuration of the present embodiment will be described with reference to FIGS. In addition, about the structure similar to 1st embodiment mentioned above, the same code | symbol is attached | subjected and demonstrated.

FIG. 4 is a diagram illustrating the linear motion guide device 1 of the present embodiment. In FIG. 4, as in FIG. 1, the guide rail 2 and the slider 4 are partially cut away for explanation.
As shown in FIG. 4, the rolling element holder 6 included in the linear guide device 1 of the present embodiment includes an attachment portion 28, a holding portion 30, and a seal member 48.
The seal member 48 is formed using, for example, an elastic resin material such as an elastomer, and is disposed between the resin holding portion 32 and the metal holding portion 34. In addition, the seal member 48 is arranged between the resin holding part 32 and the metal holding part 34 and on the installation surface 40 side on which the guide rail 2 is installed with respect to the metal holding part 34. The lip part 50 which slidably contacts with 2 is provided.

The metal holding portion 34 is disposed near the lip portion 50 and closer to the installation surface 40 than the slider-side rolling element rolling groove 14.
Further, the end cap 12 included in the linear guide device 1 of the present embodiment is an end cap in which a metal holding portion side protruding portion 26 and a seal member side protruding portion 52 to be described later are fitted to a surface facing the slider body 10. It has a side fitting part (not shown).

FIG. 5 is a view showing the resin holding portion 32 and the attachment portion 28 of the present embodiment.
As shown in FIG. 5, the resin holding portion side fitting portion 38 of the resin holding portion 32 of the present embodiment has three ribs 54 protruding upward on the lower surface. . Of the resin holding portion side fitting portion 38, the portion where the rib 54 is formed is formed such that the vertical width thereof is narrower than the thickness of the metal holding portion side flat portion 36. Of the resin holding portion side fitting portion 38, the portion in which the rib 54 is not formed has a vertical width that fits the metal holding portion side flat portion 36 and a seal member side flat portion 56 described later. It is formed so as to have a width.
The rib 54 is formed such that its height is smaller than the thickness of the seal member 48.

FIG. 6 is a view showing the seal member 48.
As shown in FIG. 6, the seal member 48 includes a seal member side flat portion 56, a lip portion 50, and a seal member side protruding portion 52.
The sealing member side flat portion 56 is formed with three slits 58 corresponding to the three ribs 54 formed in the resin holding portion side fitting portion 38.
The lip portion 50 is formed over the entire longitudinal direction of the seal member 48, and the slide member 48 and the guide rail 2 are slid in a state where the seal member 48 is disposed between the resin holding portion 32 and the metal holding portion 34. Contact freely. The width of the lip portion 50 is narrower than the width of the sealing member side flat portion 56, and the metal is made with the sealing member 48 disposed between the resin holding portion 32 and the metal holding portion 34. The configuration is arranged in the vicinity of the holding portion 34. The lip portion 50 is formed so that its thickness is thinner than the thickness of the sealing member side flat portion 56.

The seal member side protrusions 52 are formed at both ends in the longitudinal direction of the seal member side flat part 56 and the lip part 50, and the seal member side flat part 56 is fitted to the resin holding part side fitting part 38. Thus, it protrudes from both end surfaces in the moving direction of the slider body 10 rather than the resin holding portion side fitting portion 38.
Other configurations are the same as those of the first embodiment described above.

Next, operations and effects of the linear motion guide device having the above-described configuration will be described with reference to FIGS. In addition, about the part similar to 1st embodiment mentioned above, description is simplified.
Hereinafter, the assembly work of the linear motion guide device 1 including the rolling element holder 6 described above will be described.
First, the resin holding portion 32 is bent to widen the space between the mounting portions 28a and 28b, and the mounting portions 28a and 28b are joined to both end surfaces in the moving direction of the slider body 10, respectively.

  Then, the metal holding portion side flat portion 36 and the seal member side flat portion 56 are fitted into the resin holding portion side fitting portion 38 so that the resin holding portion 32, the metal holding portion 34, and the seal member 48 are integrated. Make it. At this time, the three slits 58 formed in the sealing member side flat portion 56 are respectively fitted with the three ribs 54 formed in the resin holding portion side fitting portion 38 to thereby form the metal holding portion. A seal member 48 is disposed below 34. Further, the metal holding portion side protruding portion 26 and the seal member side protruding portion 52 are protruded from both end surfaces in the moving direction of the slider body 10 rather than the resin holding portion side fitting portion 38.

After the rolling element holder 6 is attached to the slider body 10, one of the two end caps 12 is joined to the end surface of the slider body 10 in the moving direction. At this time, the metal holding portion side protruding portion 26 and the seal member side protruding portion 52 are fitted to the end cap side fitting portion of the end cap 12.
The end cap 12 is joined to the end surface of the slider body 10 in the moving direction, and is formed by a space formed by the rolling element return path 16, the direction changing path 20, the slider side rolling element rolling groove 14 and the holding portion 30. The rolling element 24 is loaded into the rolling element passage.

After loading the required number of rolling elements 24 into the rolling element passage, the end cap 12 is joined to the end face of the slider main body 10 in the direction of movement where the end cap 12 is not joined. Form.
Then, the slider 4 is attached to the guide rail 2, and the assembling work of the linear guide device 1 is finished.
Here, the seal member 48 provided in the linear guide device 1 of the present embodiment is installed between the resin holding part 32 and the metal holding part 34 and in which the guide rail 2 is installed more than the metal holding part 34. A lip portion 50 that slidably contacts the guide rail 2 in a state of being disposed on the surface 40 side is provided.

  For this reason, the gap formed between the guide rail 2 and the slider body 10 is closed by the lip portion 50 when viewed from the installation surface 40 side, so that foreign matter or the like enters the rolling element rolling path 22. Therefore, the operability and durability of the linear motion guide device 1 can be improved as compared with the linear motion guide device of the first embodiment described above. In addition, since the lip portion 50 prevents foreign matter and the like from entering the rolling element rolling path 22, contamination of the lubricant disposed in the rolling element rolling path 22 is prevented. The life of the guide device 1 can be extended.

Therefore, in the linear motion guide device according to the present embodiment, the installation surface on which the seal member 48 is disposed between the resin holding portion 32 and the metal holding portion 34 and the guide rail 2 is installed more than the metal holding portion 34. In a state of being disposed on the 40 side, the metal holding portion 34 is disposed near the lip portion 50 and closer to the installation surface 40 than the slider-side rolling element rolling groove 14.
For this reason, when the slider 4 is attached to the guide rail 2, even if the arrangement of the rolling elements 24 is disturbed and the resin holding portion 32 is deformed, the metal holding portion 34 is backed up. Therefore, the deformation of the lip portion 50 can be suppressed.

As a result, it is possible to suppress damage caused by the lip portion 50 that is thinner than the other portions being pressed against the guide rail 2 with an excessive force. In addition, it is possible to prevent an increase in frictional force generated when the slider 4 is attached to the guide rail 2, and to improve the assemblability of the linear motion guide device 1.
Further, in the linear motion guide device 1 according to the present embodiment, three ribs 54 projecting upward are formed on the lower surface of the resin holding portion side fitting portion 38, and these three locations are Three slits 58 corresponding to the ribs 54 are formed in the sealing member-side flat portion 56.

For this reason, it becomes possible to suppress the displacement of the resin holding portion 32 and the seal member 48 along the moving direction of the slider body 10, and the contact state between the guide rail 2 and the lip portion 50 is maintained. It becomes possible to prevent the operability of the movement guide device 1 from being lowered.
Furthermore, in the linear motion guide device 1 of the present embodiment, the seal member 48 has the seal member side protruding portion 52 that protrudes in the moving direction of the slider body 10 from the mounting portion 28, and the end cap 12 is sealed. It has an end cap side fitting portion into which the member side protruding portion 52 is fitted.

For this reason, since the seal member 48 is supported by the end cap 12 joined to the end surface of the slider body 10 in the moving direction, it becomes possible to increase the restraining force of the seal member 48 and increase the holding force of the seal member 48. It becomes possible to make it.
Further, in the linear motion guide device 1 of the present embodiment, the rib 54 is formed so that its height is smaller than the thickness of the seal member 48, so that the resin-made holding portion side fitting is performed. The sealing member side plane portion 56 fitted to the portion 38 is pressed and sandwiched between the resin holding portion 32 and the metal holding portion 34 from the up and down direction.

For this reason, it becomes possible to increase the holding force of the sealing member 48 by the resin holding part 32 and the metal holding part 34.
In the linear motion guide device 1 of the present embodiment, the sealing member 48 is configured separately from the resin holding portion 32 and the metal holding portion 34, but is not limited thereto, and the sealing member 48 is not limited to this. Alternatively, the resin holding unit 32 and the metal holding unit 34 may be coupled to at least one of them. In this case, it is possible to reduce the number of assembling operations for the linear motion guide device 1 and to improve the assemblability of the linear motion guide device 1.

Here, when the sealing member 48 is configured to be coupled to the resin-made holding unit 32, for example, the sealing member 48 and the resin-made holding unit 32 are coupled by integral molding. Moreover, when it is set as the structure by which the sealing member 48 is couple | bonded with the metal holding | maintenance part 34, the sealing member 48 and the metal holding | maintenance part 34 are couple | bonded by insert molding, for example.
Further, in the linear guide device 1 of the present embodiment, three ribs 54 projecting upward are formed on the lower surface of the resin holding portion side fitting portion 38 and correspond to these three ribs 54. The three slits 58 to be formed are formed in the sealing member side flat portion 56, but the present invention is not limited to this. That is, the rib 54 may not be formed in the resin holding portion side fitting portion 38, and the slit 58 may not be formed in the sealing member side flat portion 56. Further, the number of ribs 54 and slits 58 is not limited to three.

  Further, in the linear motion guide device 1 of the present embodiment, the seal member side protrusions 52 are formed at both longitudinal ends of the seal member side flat portion 56 and the lip portion 50, and the end cap 12 is connected to the seal member side protrusion 52. Although it was set as the structure which has an end cap side fitting part which fits, it is not limited to this. That is, the seal member side protrusions 52 are not formed at both ends in the longitudinal direction of the seal member side flat portion 56 and the lip portion 50, for example, at least one longitudinal end portion of the seal member side flat portion 56 and the lip portion 50. A recess may be formed, and a protrusion that fits into the recess may be formed on the joint surface of the end cap 12 with the slider body 10.

Further, a seal member side protrusion 52 is formed at both longitudinal ends of one of the seal member side flat portion 56 and the lip portion 50, and an end cap side fitting portion into which the seal member side protrusion 52 is fitted, The end cap 12 may have a configuration.
Moreover, in the linear motion guide device 1 according to the present embodiment, the seal member 48 is formed as a single body, but the present invention is not limited to this, and the seal member 48 may be divided into a plurality of pieces. In this case, you may comprise the part which the sealing member 48 fits among the resin-made holding part side fitting parts 38 by a some groove | channel.

  Further, in the linear motion guide device 1 of the present embodiment, the rib 54 is formed so that its height is smaller than the thickness of the seal member 48, but the present invention is not limited to this, and the rib 54 is not limited thereto. May be formed so that the height thereof is the same as the thickness of the seal member 48. However, it is possible to increase the holding force of the seal member 48 by forming the rib 54 so that its height is smaller than the thickness of the seal member 48 as in the linear motion guide device 1 of the present embodiment. Therefore, it is preferable.

It is a figure which shows the linear motion guide apparatus of 1st embodiment of this invention. It is a figure which shows the rolling element holder | retainer of 1st embodiment of this invention. It is a figure which shows the metal holding | maintenance parts of 1st embodiment of this invention. It is a figure which shows the linear motion guide apparatus of 2nd embodiment of this invention. It is a figure which shows the rolling element holder | retainer of 2nd embodiment of this invention. It is a figure which shows the sealing member of 2nd embodiment of this invention. It is a general | schematic disassembled perspective view of the resin circulation path molded object which the linear motion guide apparatus of a prior art example has. It is a top view of the rolling element holder | retainer with which the linear motion guide apparatus of a prior art example is provided. It is the IX-IX sectional view taken on the line of FIG. It is sectional drawing of the linear guide apparatus equipped with the rolling element holder | retainer. It is a perspective view of the rolling element holder | retainer with which the linear motion guide apparatus of a prior art example is provided. It is a front view of the linear motion guide apparatus which showed the mounting state of the rolling element holder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Linear motion guide device 2 Guide rail 4 Slider 6 Rolling element holder 8 Rail side rolling element rolling groove 9 Recessed part 10 Slider body 12 End cap 14 Slider side rolling element rolling groove 16 Rolling element return path 18 Load rolling path 20 Direction change path 22 Rolling element rolling path 24 Rolling element 26 Metal holding part side protruding part 28 Mounting part 30 Holding part 32 Resin holding part 34 Metal holding part 36 Metal holding part side flat part 38 Resin holding part side Fitting part 40 Installation surface 42 Load rolling path forming part 44 Rolling body return path forming hole 46 Slope part 48 Seal member 50 Lip part 52 Seal member side protruding part 54 Rib 56 Seal member side flat part 58 Slit 60 Resin circulation path molding Body 62 Load rolling path component 64 Rolling member return path component 66 Direction change path inner periphery guide component 68 Core material 70 Ball holder 72 Inner sea Part 74 engaging portion 76 holding body

Claims (7)

A guide rail having rail-side rolling element rolling grooves extending in the axial direction on both sides, and a slider-side rolling element straddling the guide rail so as to be relatively movable and facing the rail-side rolling element rolling groove A linear guide having a slider main body having a rolling groove, and a plurality of rolling elements loaded in a load rolling path formed from the rail-side rolling element rolling groove and the slider-side rolling element rolling groove. Provided in the device,
Two attachment portions respectively joined to both ends of the slider body in the moving direction;
A rolling element holder comprising: a holding portion that connects the both attachment portions and sandwiches the rolling element therebetween and faces the slider-side rolling element rolling groove;
The holding portion is composed of a resin holding portion formed using a resin material and a metal holding portion formed using a metal material and extending in the moving direction of the slider body. A rolling element holder characterized by. The metal holding part is formed separately from the resin holding part,
2. The rolling element holder according to claim 1, wherein the resin holding portion includes a resin holding portion side fitting portion into which at least a part of the metal holding portion is fitted. A seal member having a lip portion that is slidably in contact with the guide rail, between the resin holding portion and the metal holding portion and closer to an installation surface than the metal holding portion on which the guide rail is installed And place
3. The rolling element holder according to claim 2, wherein the metal holding part is disposed near the lip part and closer to the installation surface than the slider-side rolling element rolling groove. 4.   The rolling element holder according to claim 3, wherein the seal member is coupled to at least one of the resin holding part and the metal holding part.   A linear motion guide device comprising the rolling element holder according to any one of claims 1 to 4.   The linear motion according to claim 5, wherein the end cap joined to the end surface of the slider body in the moving direction has an end cap side fitting portion into which at least a part of the metal holding portion is fitted. Guide device. The slider body includes two or more rows of the slider-side rolling element rolling grooves on one side,
The metal holding portion is an installation surface on which at least the guide rail is installed among the plurality of rows of slider-side rolling element rolling grooves in a state where the both attachment portions are joined to both end surfaces of the slider body in the moving direction. 7. The linear guide device according to claim 5, wherein the slider-side rolling element rolling groove on the side faces the rolling element with the rolling element interposed therebetween.

Images