JPWO2016143342A1 - End cap and linear motion guide device including the same - Google Patents

Abstract

An end cap capable of efficiently supplying a lubricant to a rolling element circulation path and a linear motion guide device including the end cap are provided. For this purpose, the end cap (1) provided on the slider of the linear guide device communicates the front oil supply hole (8a) and the side oil supply holes (8b, 8c) formed on the outer peripheral surface with the direction change path (6). An oil passage (22) is formed. The end cap (1) includes an end cap body (2) and an oil passage unit (4) fitted into the recess (10). The oil passage (22) communicates the first oil passage (12) communicating with the recess (10) and the direction change passage, the first oil passage (12), and the side surface oil supply holes (8b, 8c). And a third oil passage (20) communicating the first oil passage (12) and the second oil passage (16). The second oil passage (16) and the third oil passage (20) are arranged so as to overlap along the moving direction of the slider body (120A) in the end cap body (2).

Description

  The present invention relates to an end cap and a linear motion guide device including the same, and more particularly to an end cap formed with an oil passage and a linear motion guide device including the same.

Conventionally, in a linear motion guide device having a slider and a slider that is movable in the longitudinal direction of the slider via a rolling element, oil filler ports are provided on both side surfaces of end caps provided at both ends of the slider in the moving direction. There has been proposed a linear motion guide device configured to connect each oil supply port to each of the left and right rolling element circulation paths of the end cap and to supply the lubricant equally to each of the left and right rolling element circulation paths.
As an example of such a linear motion guide device, the technique disclosed in Patent Document 1 can be cited. That is, an oil passage connecting the supply ports provided on both side surfaces of the end cap and an oil passage connecting the left and right rolling element circulation paths are connected at an intermediate position in the width direction of the end cap, and supplied from each supply port. The linear motion guide device supplies the lubricant to the left and right rolling element circulation paths.

In addition, linear motion guide devices used in general-purpose, machine tools and the like ensure a running life by periodically supplying a lubricant. This linear motion guide device is often used in various lubrication positions (front, top, side) and postures (wall hanging, vertical), and is a stable lubricant regardless of the lubrication position and the posture of the linear motion guide device. Need to be replenished.
However, depending on the oil supply position and the attitude of the linear motion guide device, lubrication may not be successful due to the influence of the vertical force, especially the oil lubrication position of the oil (oil) lubrication is on the side, or the linear motion guide device is in a wall-mounted position. In such a case, an imbalance of the supply amount due to the rolling train tends to occur.

Therefore, as an example of a linear motion guide device that solves such a problem, Patent Literature 2 and Patent Literature 3 are related to a linear motion guide device that can supply a lubricant regardless of an oil supply position or an attitude of the linear motion guide device. Is disclosed. These technologies connect the oil passages connecting the supply ports provided in the end caps and the oil passages connecting the left and right rolling element circulation paths, and supply the lubricant supplied from the supply ports to the left and right rolling element circulations. This is a linear motion guide device supplied to the road.
The technique disclosed in Patent Document 2 is provided with a tube for supplying a lubricant, and by securing an independent path from the oil supply position to the lubricant supply destination (each rolling element circulation path), The lubricant can be supplied regardless of the posture of the motion guide device. Further, the technique disclosed in Patent Document 3 also secures an independent path from an oil supply position to a lubricant supply destination (each rolling element circulation path) by providing a plug in the oil path. The lubricant can be supplied regardless of the position and the attitude of the linear motion guide device.

Japanese Utility Model Publication No. 01-73518 JP 2008-224014 A JP 2012-232354 A

However, in the linear motion guide device disclosed in Patent Document 1, the route of the lubricant is once formed upward from the side surface supply portion (nipple hole) (the direction in which the slider is installed with reference to the guide rail). . In such a lubricant path, for example, in the case of oil lubrication, since it opposes gravity, it is disadvantageous for flow.
In particular, when a small-sized side plate (end cap) is to be produced due to downsizing of the linear motion guide device, an oil passage connecting each supply port provided on both side surfaces of the end cap, and each of the left and right sides It has become difficult to separate and form the oil passages that connect the rolling element circulation passages, and there is room for improvement in terms of reduction in productivity and product accuracy.

Further, in the linear motion guide devices disclosed in Patent Literature 2 and Patent Literature 3, it is necessary to prepare with specifications according to the respective refueling positions and postures of the linear motion guidance devices, and inventory management costs and space for that need to be prepared. Arise. In addition, there was concern about quality problems when end caps with different specifications were installed incorrectly, and there was room for improvement.
Therefore, the present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide an end cap capable of efficiently supplying a lubricant to the rolling element circulation path and a linear motion guide device including the end cap. There is.

An aspect of the end cap for achieving the above object is formed between the guide rail and the slider body, and is joined to the end surface in the moving direction of the slider body that is movably supported on the guide rail. A direction changing path for communicating the load rolling path and the rolling element return path of the slider body,
An oil passage is formed that communicates the front oil supply hole and the side oil supply hole formed on the outer peripheral surface with the direction change path,
The end cap includes an end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body and can be fitted with the oil passage unit, and is formed on a joint surface with the slider body, and communicates the direction changing path and the recess. A first oil passage to
A second oil passage communicating the first oil passage and the side surface oil supply hole;
The oil passage unit has a third oil passage that communicates between the first oil passage and the second oil passage through the front oil supply hole in a state of being fitted in the recess,
The second oil passage and the third oil passage are arranged so as to overlap along the moving direction of the slider body in the end cap body.

Another aspect of the end cap for achieving the above object is that the end cap is joined to the end surface in the moving direction of the slider main body, which is movably supported on the guide rail, and between the guide rail and the slider main body. A direction change path that communicates the formed load rolling path and the rolling element return path of the slider body;
An oil passage is formed that communicates the front oil supply hole and the side oil supply hole formed on the outer peripheral surface with the direction change path,
The end cap includes an end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body and can be fitted with the oil passage unit, and is formed on a joint surface with the slider body, and communicates the direction changing path and the recess. A first oil passage to
Have
The oil passage unit includes a second oil passage communicating the first oil passage and the side surface oil supply hole;
A first oil passage fitted in the recess, and a third oil passage communicating with the second oil passage through the front oil supply hole;
The second oil passage and the third oil passage are arranged so as to overlap along the moving direction of the slider body in the end cap body.
Here, in the linear motion guide device, the second oil passage may be composed only of an inclined oil passage that is inclined downward.

In addition, a mode of the linear motion guide device for achieving the above object includes a guide rail having a rail-side rolling surface extending in the longitudinal direction on the outer surface, and a slider body that is straddled to be relatively movable on the guide rail, And a slider having end caps provided on both end faces in the moving direction of the slider body,
The end cap is joined to the moving direction end surface of the slider main body, which is movably straddled on the guide rail, and is formed between the guide rail and the slider main body and the slider main body. A direction change path that communicates with the rolling element return path of
An oil passage is formed that communicates the front oil supply hole and the side oil supply hole formed on the outer peripheral surface with the direction change path,
The end cap includes an end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body and can be fitted with the oil passage unit, and is formed on a joint surface with the slider body, and communicates the direction changing path and the recess. A first oil passage to
A second oil passage communicating the first oil passage and the side surface oil supply hole;
The oil passage unit has a third oil passage that communicates between the first oil passage and the second oil passage through the front oil supply hole in a state of being fitted in the recess,
The second oil passage and the third oil passage are arranged so as to overlap along the moving direction of the slider body in the end cap body.

In another aspect of the linear motion guide device for achieving the above object, a guide rail having a rail-side rolling surface extending in the longitudinal direction on an outer surface, and a slider main body straddling the guide rail so as to be relatively movable. And a slider having end caps provided on both end faces in the moving direction of the slider body,
The end cap is joined to an end surface of the slider main body that is movably straddled over the guide rail, and a load rolling path formed between the guide rail and the slider main body and the slider main body are connected to each other. A direction change path that communicates with the rolling element return path having
An oil passage is formed that communicates the front oil supply hole and the side oil supply hole formed on the outer peripheral surface with the direction change path,
The end cap includes an end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body and can be fitted with the oil passage unit, and is formed on a joint surface with the slider body, and communicates the direction changing path and the recess. A first oil passage to
Have
The oil passage unit includes a second oil passage communicating the first oil passage and the side surface oil supply hole;
A first oil passage fitted in the recess, and a third oil passage communicating with the second oil passage through the front oil supply hole;
The second oil passage and the third oil passage are arranged so as to overlap along the moving direction of the slider body in the end cap body.
Here, in the linear motion guide device, the second oil passage may be composed only of an inclined oil passage that is inclined downward.

Another aspect of the end cap for achieving the above object is that the end cap is joined to the end surface in the moving direction of the slider main body, which is movably supported on the guide rail, and between the guide rail and the slider main body. A direction change path that communicates the formed load rolling path and the rolling element return path of the slider body;
An oil passage that connects the upper surface oil supply hole, the front oil supply hole and the side oil supply hole formed on the outer peripheral surface and the direction change path is formed,
An end cap body having a part of the direction change path and the oil path, and a plurality of oil path units having a part of the oil path,
The end cap body is formed on a joint surface between the slider body and a recess formed on a joint surface with the slider body and capable of fitting a plurality of the oil passage units in a thickness direction, and the direction change. A first oil passage communicating the passage and the recess;
A second oil passage communicating the recess and the side oil supply hole;
A fourth oil passage communicating the recess and the front oil supply hole;
A fifth oil passage communicating the recess and the upper surface oil supply hole,
The oil passage unit has a sixth oil passage that communicates the first oil passage, the fourth oil passage, and the fifth oil passage on the front surface, and the first oil passage and the first oil passage on the back surface. A seventh oil passage communicating with the two oil passages.

Another aspect of the end cap for achieving the above object is that the end cap is joined to the end surface in the moving direction of the slider main body, which is movably supported on the guide rail, and between the guide rail and the slider main body. A direction change path that communicates the formed load rolling path and the rolling element return path of the slider body;
An oil passage that connects the upper surface oil supply hole, the front oil supply hole and the side oil supply hole formed on the outer peripheral surface and the direction change path is formed,
An end cap body having a part of the direction change path and the oil path, and a plurality of oil path units having a part of the oil path,
The end cap body is formed on a joint surface between the slider body and a recess formed on a joint surface with the slider body and capable of fitting a plurality of the oil passage units in a thickness direction, and the direction change. A first oil passage communicating the passage and the recess;
Two second oil passages communicating the recess and the side surface oil supply hole;
A fourth oil passage communicating the recess and the front oil supply hole;
A fifth oil passage communicating the recess and the upper surface oil supply hole,
The oil passage unit has a sixth oil passage that communicates the first oil passage, the fourth oil passage, and the fifth oil passage on the front surface, and two first oil passages on the back surface. And a second oil passage communicating with each of the two second oil passages on one side surface.
Here, in the end cap, the two oil passage units may be overlapped with their surfaces facing each other and fitted into the recess.
Further, the end cap may be provided with an extension portion in which at least one of the sixth oil passage and the seventh oil passage projects into the first oil passage.

In another aspect of the linear motion guide device for achieving the above object, a guide rail having a rail-side rolling surface extending in the longitudinal direction on an outer surface, and a slider main body straddling the guide rail so as to be relatively movable. And a slider having end caps provided on both end faces in the moving direction of the slider body,
The end cap is joined to the moving direction end surface of the slider main body, which is movably straddled on the guide rail, and is formed between the guide rail and the slider main body and the slider main body. A direction change path that communicates with the rolling element return path of
An oil passage is formed that communicates the front oil supply hole and the side oil supply hole formed on the outer peripheral surface with the direction change path,
The end cap includes an end cap body having a part of the direction change path and the oil path, and a plurality of oil path units having a part of the oil path,
The end cap body is formed on a joint surface between the slider body and a recess formed on a joint surface with the slider body and capable of fitting a plurality of the oil passage units in a thickness direction, and the direction change. A first oil passage communicating the passage and the recess;
A second oil passage communicating the recess and the side oil supply hole;
A fourth oil passage communicating the recess and the front oil supply hole;
A fifth oil passage communicating the recess and the upper surface oil supply hole,
The oil passage unit has a sixth oil passage that communicates the first oil passage, the fourth oil passage, and the fifth oil passage on the front surface, and the first oil passage and the first oil passage on the back surface. A seventh oil passage communicating with the two oil passages.

In another aspect of the linear motion guide device for achieving the above object, a guide rail having a rail-side rolling surface extending in the longitudinal direction on an outer surface, and a slider main body straddling the guide rail so as to be relatively movable. And a slider having end caps provided on both end faces in the moving direction of the slider body,
The end cap is joined to an end surface of the slider main body that is movably straddled over the guide rail, and a load rolling path formed between the guide rail and the slider main body and the slider main body are connected to each other. A direction change path that communicates with the rolling element return path having
An oil passage that connects the upper surface oil supply hole, the front oil supply hole and the side oil supply hole formed on the outer peripheral surface and the direction change path is formed,
The end cap includes an end cap body having a part of the direction change path and the oil path, and a plurality of oil path units having a part of the oil path,
The end cap body is formed on a joint surface between the slider body and a recess formed on a joint surface with the slider body and capable of fitting a plurality of the oil passage units in a thickness direction, and the direction change. A first oil passage communicating the passage and the recess;
Two second oil passages communicating the recess and the side surface oil supply hole;
A fourth oil passage communicating the recess and the front oil supply hole;
A fifth oil passage communicating the recess and the upper surface oil supply hole,
The oil passage unit has a sixth oil passage that communicates the first oil passage, the fourth oil passage, and the fifth oil passage on the front surface, and two first oil passages on the back surface. And a second oil passage communicating with each of the two second oil passages on one side surface.

Here, in the linear motion guide device, the two oil passage units of the end cap may be overlapped with the surfaces facing each other and fitted into the recess.
In the linear motion guide device, an extension part in which at least one of the sixth oil passage and the seventh oil passage of the end cap protrudes into the first oil passage may be provided.

  According to one aspect of the present invention, it is possible to provide an end cap capable of efficiently supplying a lubricant to the rolling element circulation path and a linear motion guide device including the end cap.

It is a perspective view which shows the structure in 1st Embodiment of a linear guide apparatus. It is a rear view which shows the structure in 1st Embodiment of an end cap. It is a figure which shows the structure in 1st Embodiment of an end cap, (a) is a rear view of an oil-path unit, (b) is a rear view of an end cap main body. It is a figure which shows the structure in 1st Embodiment of an end cap, (a) is a side view of an oil-path unit, (b) is a side view of an end cap main body. It is a figure which shows the structure in the modification of 1st Embodiment of an end cap, (a) is a rear view which shows the structure of the end cap main body of the modification 1, (b) is the structure of the oil-path unit of the modification 2. The rear view shown, (c) is a diagram showing a third oil passage in the linear motion guide device installed on the wall surface, (d) is a rear view showing the configuration of the oil passage unit of Modification 3. It is a rear view which shows the structure in 2nd Embodiment of an end cap. It is a figure which shows the structure in 2nd Embodiment of an end cap, (a) is a rear view of an oil path unit, (b) is a front view of an oil path unit, (c) is a rear view of an end cap main body. It is a figure which shows the structure in 2nd Embodiment of an end cap, (a) is a side view of an oil-path unit, (b) is a side view of an end cap main body. It is a rear view which shows the structure in the modification of 2nd Embodiment of an end cap. It is a rear view which shows the structure in 3rd Embodiment of an end cap. It is a figure which shows the structure in 3rd Embodiment of an end cap, (a) is a rear view of an oil path unit, (b) is a front view of an oil path unit, (c) is a rear view of an end cap main body. It is a figure which shows the structure in 3rd Embodiment of an end cap, (a) is a side view of an oil-path unit, (b) is a side view of an end cap main body. It is a rear view which shows the structure in the modification of 3rd Embodiment of an end cap. It is a perspective view which shows the structure in 4th Embodiment of a linear guideway. It is a rear view which shows the structure in 4th Embodiment of an end cap. It is a figure which shows the structure in 4th Embodiment of an end cap, (a) is a rear view of an oil path unit, (b) is a front view of an oil path unit, (c) is a rear view of an end cap main body. It is sectional drawing which follows the XVII-XVII line of FIG. It is a figure which shows the structure which installed one oil path unit in the end cap main body in 4th Embodiment of an end cap, (a) is a top view of an end cap, (b) is a rear view of an end cap. It is a figure which shows the structure which installed one oil path unit in the end cap main body in 4th Embodiment of an end cap, (a) is a front view of an end cap, (b) is a side view of an end cap. It is a figure which shows the structure which installed two oil path units in the end cap main body in 4th Embodiment of an end cap, (a) is a rear view of an end cap, (b) is a side view of an end cap. It is a figure which shows the structure which installed three oil path units in the end cap main body in 5th Embodiment of an end cap, (a) is a rear view of an end cap, (b) is the XXI-XXI line of (a). It is sectional drawing which follows. It is a rear view which shows the structure of the oil path unit in 6th Embodiment of an end cap.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. However, it will be apparent that one or more embodiments may be practiced without such specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an end cap and a linear guide device having the same according to the present invention will be described below with reference to the drawings.

<Linear guide device>
As shown in FIG. 1, the linear motion guide device 100 includes a guide rail 110 having a rail-side rolling surface 111 extending in the longitudinal direction on the outer surface, and a slider 120 straddling the guide rail 110 so as to be relatively movable. ing.
The slider 120 includes a slider main body 120A and end caps 1 that are joined to both end faces of the slider main body 120A in the moving direction by joint members 122, respectively.

The slider main body 120A has a U-shaped cross section, and both sleeve portions have slider-side rolling surfaces (not shown) facing the rail-side rolling surfaces 111, respectively. It has a rolling element return path (not shown) that penetrates the thick portion in the moving direction of the slider body 120A. A load rolling path is formed between the rail-side rolling surface 111 and the slider-side rolling surface.
The joining member 122 is formed by, for example, a screw, and is inserted into both sleeve portion side through holes and an oil passage unit mounting through hole, which will be described later, and detachably couples the end cap 1 to the slider body 120A. .

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

The end cap 1 of the present embodiment is an end cap provided in the linear motion guide device 100 described above, and the “back surface” of the end cap 1 shown in FIG. 2 indicates a joint surface with the slider main body 120A. Hereinafter, of both end surfaces of the end cap 1 in the moving direction of the slider 120 with respect to the guide rail 110, a surface facing (joining) the slider main body 120A is referred to as a “rear surface” and the opposite surface is a front surface.
As shown in FIG. 2, the end cap 1 includes an end cap body 2 and an oil passage unit 4.

[End cap body]
As shown in FIGS. 2, 3 (b), and 4 (a), the end cap body 2 is formed in a U-shaped cross section using, for example, a hard resin material, and the direction change path 6, an oil supply hole 8, a recess 10, a first oil passage 12, a through hole 14, and a second oil passage 16.
[Changing direction]
The direction change path 6 is formed as direction change paths 6a and 6b on both sleeves, respectively, and communicates a load rolling path and a rolling element return path formed between the guide rail 110 and the slider body 120A. ing.

[Oil filling hole]
The oil supply hole 8 is formed on the outer peripheral surface of the end cap body 2 other than the joint surface with the slider main body 120A. In the present embodiment, a case where three oil supply holes 8 are formed for one end cap body 2 will be described.
The three oil supply holes 8 include a front oil supply hole 8a formed on the surface of the end cap body 2 opposite to the joint surface with the slider body, and a left side surface of the end cap body 2 (on both side surfaces of the end cap body 2). Of these, the left side oil supply hole 8b formed in the left side surface in FIG. 2 and the right side surface of the end cap body 2 (the right side surface in FIG. 2 of both side surfaces of the end cap body 2) are formed. Right side oil supply hole 8c.

[Concave]
The concave portion 10 is formed on the joint surface of the end cap body 2 with the slider body, and is formed in a shape into which the oil passage unit 4 can be fitted. The recess 10 is opposed to the oil supply holes 8a to 8c with the thin portion of the end cap body 2 formed between the recess 10 and each of the oil supply holes 8a to 8c, and the thin portion is removed. In this state, the oil supply holes 8a to 8c communicate with each other. In the present embodiment, among the oil supply holes 8a to 8c, only the front oil supply hole 8a, that is, only the oil supply hole 8 arranged between both side surfaces of the end cap body 2 communicates with the recess 10. explain.

[First oil passage]
The first oil passage 12 is, for example, a concave groove formed on the joint surface of the end cap body 2 with the slider body, and communicates the concave portion 10 with the direction change paths 6 formed on both sleeve portions, respectively. ing. In the following description, the first oil passage 12 that communicates the recess 10 and the direction change path 6a is referred to as a first oil path 12a, and the first oil passage 12 communicates between the recess 10 and the direction change path 6b. The oil passage 12 is referred to as a first oil passage 12b.
The through-hole 14 includes two sleeve-side through-holes 14a formed in the sleeve portions, and two recess-side through-holes (not shown). Each sleeve-side through hole 14a and each recess-side through hole both penetrate the end cap body 2 in the direction of movement of the slider body. For example, a joining member (not shown) formed by a screw is inserted therethrough. It is formed in a possible shape. Further, each sleeve side through hole 14a and each recess side through hole are formed on the end surface in the moving direction of the slider main body, and four slider side mounting holes (not shown) into which the front end side of the joining member fits. And corresponding positions. The configuration of the recess-side through hole will be described later.

[Second oil passage]
As shown in FIG. 3B, the second oil passage 16 is, for example, a concave groove formed on the joint surface of the end cap body 2 with the slider body, and includes a left side oil supply hole 8b and a front oil supply hole. 8a communicates with the right side oil supply hole 8c. Here, the second oil passage 16 is, for example, an inclined oil passage 16A inclined downward from the left side oil supply hole 8b (side where the guide rail 110 is located), and downward from the right side oil supply hole 8c (the guide rail 110 is A connecting oil passage 16C that communicates with the inclined oil passage 16B that inclines toward the side) and the front oil supply hole 8a, is formed flat in the width direction of the end cap body 2, and connects the inclined oil passages 16A and 16B. Consists of

[Oil channel unit]
As shown in FIGS. 3A and 4B, the oil passage unit 4 is formed in a plate shape that fits into the recess 10 using, for example, a resin material such as a thermoplastic elastomer. 3 oil passages 20 and oil passage unit side through holes (hereinafter also referred to as through holes) 14c and 14d. The through hole 14d is a through hole that communicates with the front oil supply hole 8a.

[Third oil passage]
The third oil passage 20 is formed on the surface opposite to the surface facing the slider body 120A of the oil passage unit 4 in a state in which the oil passage unit 4 is fitted in the recess 10, for example, by a concave groove. Is formed. Further, the third oil passage 20 communicates the front oil supply hole 8a and the through hole 14d with the first oil passages 12a and 12b in a state where the oil passage unit 4 is fitted in the recess 10. Here, the third oil passage 20 is arranged in the oil passage unit 4 so as to overlap with the second oil passage 16 along the moving direction of the slider main body 120A in the end cap main body 2.
In the following description, the third oil passage 20 that connects the front oil supply hole 8a and the through hole 14d and the first oil passage 12a is referred to as a third oil passage 20a, and the front oil supply hole 8a and the through oil supply hole 8a. The third oil passage 20 that communicates the hole 14d with the first oil passage 12b is referred to as a third oil passage 20b.

Accordingly, when the oil passage unit 4 is fitted into the recess 10, the first oil passage 12a, the third oil passage 20a, the second oil passage 16a, and the first oil passage 12b, the third oil passage 20b, The second oil passage 16a communicates to form an oil passage 22 that communicates the front oil supply hole 8a and the direction change passages 6a and 6b. In the following description, the oil passage 22 that communicates the front oil supply hole 8a and the direction change path 6a is referred to as an oil path 22a, and the oil passage 22 that communicates the front oil supply hole 8a and the direction change path 6b. It is described as an oil passage 22b.
The oil passage unit side through hole 14c penetrates the oil passage unit 4 in the movement direction of the slider body, and the movement direction of the recess side through hole and the slider body in the state where the oil passage unit 4 is fitted into the recess 10. It is formed at a position overlapping when viewed from above.

Therefore, when the oil passage unit 4 is fitted into the recess 10, the oil passage unit side through hole 14c and the recess side through hole are communicated to form an oil passage unit mounting through hole.
In the present embodiment, the second oil passage and the third oil passage are arranged so as to overlap along the moving direction of the slider body in the end cap body. In addition, since a part of the oil passage is provided in the oil passage unit which is a unit component, the degree of freedom in designing the oil passage is high and the change is easy. In particular, the route from the side supply hole to the front supply hole to the direction change path on the oil passage unit can be arranged at the same height, and there is an advantage that it is not necessary to make a route upward from the side supply hole. As a result, it is possible to provide an end cap that can efficiently supply the lubricant to the rolling element circulation path and a linear motion guide device including the end cap even if the size is reduced.

[Modification 1]
As shown in FIG. 5A, the second oil passage 16 provided in the end cap body 2 is not provided with the connecting oil passage 16C as shown in FIG. It is good also as a structure which consists of the path | route 16B and is connected to the front oil supply hole 8a in these connection parts. By setting it as such a structure, a lubricant can be provided smoothly.

[Modification 2]
As shown in FIG.5 (b), you may comprise the 3rd oil path 20 with the oil path 20A and the oil path 20B from which a path | route diameter differs. That is, when the linear motion guide device is attached to a wall surface as shown in FIG. 5C, the direction of gravity of the oil passage 20A and the oil passage 20B (the direction of the arrow in FIG. 5C). The diameter of the oil passage (oil passage 20B) located on the upper side is increased.
By configuring in this way, even in the case of oil circulation, a configuration that does not adversely affect the flow against gravity is provided. An example of the material of the end cap 1 is POM. On the other hand, as a material of the oil passage unit 4, a synthetic resin is exemplified. Examples of the synthetic resin include plastics and thermoplastic elastomers. Examples of the plastic include POM, and examples of the thermoplastic elastomer include an oil-resistant polyamide-based elastomer or polystyrene-based elastomer.

[Modification 3]
As shown in FIG.5 (d), it restrict | squeezes to the exit 20A (1st oil path 12a side) of the 3rd oil path 20a, and the exit 20B (1st oil path 12b side) of the 3rd oil path 20b. May be provided. In addition, you may provide the valve | bulb etc. which open at predetermined pressure instead of an aperture | diaphragm | restriction in outlet 20A, B. In this way, by applying further pressure from the state in which the inside of the third oil passage 20 (20a, 20b) is filled with the lubricating oil, the lubricating oil is uniformly distributed from the outlets 20A, 20B to the first oil passages 12a, 12b. Can be refueled.

(Second Embodiment)
Next, a second embodiment of the end cap and the linear guide device using the same according to the present invention will be described with reference to the drawings. In addition, since this embodiment differs only in the location where the 2nd oil path is formed from the above-mentioned 1st Embodiment, it is set as the description of only an end cap and attached | subjected the same code | symbol as the above-mentioned 1st Embodiment. A description of the same configuration is omitted.
As shown in FIG. 6, the end cap 1 of the present embodiment is similar to the first embodiment in that the first oil passage 12 communicates with the direction change passage 6 that is a member constituting a part of the rolling element circulation passage. The second oil passage 16 communicating with the side surface supply holes 8b and 8c is connected to the third oil passage 20 via the front oil supply hole 8a or the through hole 14d.

In the present embodiment, as shown in FIGS. 7A and 8B, a third oil passage 20 communicating with the first oil passage 12 is formed on the back surface of the oil passage unit 4. Further, as shown in FIGS. 7B and 8B, a second oil passage 16 communicating with the side surface supply holes 8 b and 8 c is formed in the front of the oil passage unit 4. Further, as shown in FIG. 7C, no oil passage is formed in the recess 10 of the end cap body 2. However, when the oil passage unit 4 is fitted into the recess 10, the communication groove 17 that communicates with the side surface supply holes 8 b and 8 c is provided so as to open on the side surface of the recess 10.
By adopting such a configuration, it is possible not only to efficiently supply the lubricant to the rolling element circulation path, but also to the end cap body 2 other than the connecting groove 17 as in the first embodiment. Therefore, the manufacturing cost can be reduced. Further, since the oil passages between the connection grooves 17 communicating with the side surface supply holes 8b and 8c and the direction change passage 6 are concentrated in the oil passage unit 4, the degree of freedom in forming the oil passages is increased.

[Modification]
As shown in FIG. 9, the second oil passage 16 provided in the oil passage unit 4 is not provided with the connecting oil passage 16C as shown in FIG. 8B, and the inclined oil passage 16A and the inclined oil passage 16B. It is good also as a structure which communicates with the through-hole 14d by these connection parts. With such a configuration, the lubricant can be smoothly provided to the rolling element circulation path.

(Third embodiment)
Next, an end cap according to the present invention and a third embodiment of a linear guide device using the same will be described with reference to the drawings. Note that this embodiment is different from the first embodiment described above in that the fourth oil passage is provided in the oil passage unit, and therefore only the end cap is described, and the same reference numerals as those in the first embodiment described above. The description of the same configuration marked with is omitted.
As shown in FIG. 10, the end cap 1 of the present embodiment is similar to the first embodiment in that the first oil passage 12 communicates with the direction change passage 6 that is a member constituting a part of the rolling element circulation passage. The second oil passage 16 communicating with the side surface supply holes 8b and 8c is connected to the third oil passage 20 via the front oil supply hole 8a or the through hole 14d.

In the present embodiment, as shown in FIGS. 11A and 12B, a third oil passage 20 communicating with the first oil passage 12 is formed on the back surface of the oil passage unit 4. Further, as shown in FIGS. 11B and 12B, a second oil passage 16 communicating with the side surface supply holes 8b and 8c is formed in the front face of the oil passage unit 4. Further, as shown in FIG. 11 (c), a fourth oil passage 18 is formed in the recess 10 of the end cap body 2. The fourth oil passage 18 is also provided in the same manner as the second oil passage 16 in the first embodiment. Further, when the oil passage unit 4 is fitted into the recess 10, the second oil passage 16 provided in the oil passage unit 4 and the fourth oil passage 18 provided in the recess 10 are moved by the slider 120. It arrange | positions so that it may become the same shape in a direction (direction orthogonal to the front surface and the back surface of the end cap main body 2). That is, the inclined oil passages 16A and 18A, the inclined oil passages 16B and 18B, and the connecting oil passages 16C and 18C are in the same shape and communicated so as to expand in the slider moving direction (the thickness direction of the end cap body 2). Be placed.
By adopting such a configuration, the oil passage that communicates the side surface supply holes 8b and 8c and the through hole 14d (front supply hole 8a) is constituted by the second oil passage 16 and the fourth oil passage 18. Therefore, the lubricant can be supplied more efficiently to the rolling element circulation path even if the size is reduced.

[Modification]
As shown in FIG. 13, the second oil passage 16 provided in the end cap body 2 includes the inclined oil passage 16 </ b> A and the inclined oil passage 16 </ b> B without providing the connecting oil passage 16 </ b> C as shown in FIG. It is good also as a structure connected to the front oil supply hole 8a by these connection parts. The same applies to the fourth oil passage 18 provided in the oil passage unit 4, and the second oil passage 16 and the fourth oil passage 18 have the same shape. With such a configuration, the lubricant can be smoothly provided to the rolling element circulation path.

As described above, in the present invention, the third oil passage 20 communicating with the first oil passage 12 and the second oil passage 16 communicating with the left side oil supply hole 8b and the right side oil supply hole 8c are front-facing. It has the structure arrange | positioned so that these may be connected by the oil supply hole 8a and these may overlap in the moving direction of the slider 120. FIG. Therefore, it is possible to provide an end cap that can efficiently supply the lubricant to the rolling element circulation path and a linear motion guide device including the end cap even if the size is reduced.
The linear motion guide device of the present embodiment is suitable for a linear motion guide device used in general machine devices such as machine tools and conveyor devices.

Next, another embodiment of the end cap and the linear motion guide device including the end cap will be described with reference to the drawings.
(Fourth embodiment)
<Linear guide device>
As shown in FIG. 14, the linear motion guide device 100 includes a guide rail 110 having a rail-side rolling surface 111 extending in the longitudinal direction on the outer surface, and a slider 120 straddling the guide rail 110 so as to be relatively movable. ing.
The slider 120 includes a slider main body 120A and end caps 1 that are joined to both end faces of the slider main body 120A in the moving direction by joint members 122, respectively.

The slider main body 120A has a U-shaped cross section, and both sleeve portions have slider-side rolling surfaces (not shown) facing the rail-side rolling surfaces 111, respectively. It has a rolling element return path (not shown) that penetrates the thick portion in the moving direction of the slider body 120A. A load rolling path is formed between the rail-side rolling surface 111 and the slider-side rolling surface.
The joining member 122 is formed by, for example, a screw, and is inserted into both sleeve portion side through holes and an oil passage unit mounting through hole, which will be described later, and detachably couples the end cap 1 to the slider body 120A. .

<End cap>
Next, a fourth embodiment of the end cap of the present invention will be described with reference to the drawings. In this embodiment, an end cap provided in a linear motion guide device using cylindrical rollers as rolling elements will be described as an example. However, the configuration of the linear motion guide device is not limited to this, for example, The steel ball may be used as the rolling element. Further, in the present embodiment, an end cap provided in a linear motion guide device including two rows of rolling element circulation paths on the left and right sides will be described as an example. However, 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 circuit of 1 row of right and left, and good also as a structure provided with the rolling element circuit of 3 or more rows on the left and right.

The end cap 1 of the present embodiment is an end cap provided in the above-described linear motion guide device 100, and the “back surface” of the end cap 1 shown in FIG. 15 refers to a joint surface with the slider main body 120A. Hereinafter, of both end surfaces of the end cap 1 in the moving direction of the slider 120 with respect to the guide rail 110, a surface facing (joining) the slider main body 120A is referred to as a “rear surface” and the opposite surface is a front surface.
As shown in FIG. 15, the end cap 1 includes an end cap body 2 and an oil passage unit 4.

[End cap body]
As shown in FIGS. 15 and 16C, the end cap body 2 has a U-shaped cross section using, for example, a hard resin material. The end cap body 2 includes a direction change path 6, an oil supply hole 8, a recess 10, a first oil path 12, a through hole 14, a second oil path 16, a fourth oil path 217, And a fifth oil passage 218.
[Changing direction]
The direction change path 6 is formed as direction change paths 6a and 6b on both sleeves, respectively, and communicates a load rolling path and a rolling element return path formed between the guide rail 110 and the slider body 120A. ing.

[Oil filling hole]
The oil supply hole 8 is formed on the outer peripheral surface of the end cap body 2 other than the joint surface with the slider main body 120A. In the present embodiment, a case where four oil supply holes 8 are formed in one end cap body 2 will be described.
The four oil supply holes 8 are formed in the front oil supply hole 8a formed on the surface of the end cap body 2 opposite to the joint surface with the slider main body, side supply holes 8b to 8e, and the upper surface of the end cap main body 2. And the upper surface supply hole 8f. Here, the side surface supply holes 8b to 8e are two left side oil supply holes 8b, 8c formed on the left side surface of the end cap body 2 (the left side surface in FIG. 15 among both side surfaces of the end cap body 2). And two right side surface oil supply holes 8d and 8e formed on the right side surface of the end cap body 2 (the right side surface in FIG. 15 among both side surfaces of the end cap body 2).

[Concave]
The recess 10 is formed on the joint surface of the end cap body 2 with the slider body, and is formed in a shape in which a plurality of oil passage units 4 stacked in the thickness direction can be fitted. Here, the “thickness direction” of the oil passage unit 4 is an axial direction connecting a front surface and a back surface described later. The recess 10 is opposed to the oil supply holes 8a to 8f and the thin portion of the end cap body 2 formed between the recess 10 and each of the oil supply holes 8a to 8f, and the thin portion is removed. In this state, the oil supply holes 8a to 8f communicate with each other.

[First oil passage]
The first oil passage 12 is, for example, a concave groove formed on the joint surface of the end cap body 2 with the slider body, and communicates the concave portion 10 with the direction change paths 6 formed on both sleeve portions, respectively. ing. In the following description, the first oil passage 12 that communicates the recess 10 and the direction change path 6a is referred to as a first oil path 12a, and the first oil passage 12 communicates between the recess 10 and the direction change path 6b. The oil passage 12 may be described as the first oil passage 12b.
The through-hole 14 includes two sleeve-side through-holes 14 formed in both sleeve portions, and two recess-side through-holes (not shown). Both the sleeve-side through holes 14 and the recess-side through holes both penetrate the end cap body 2 in the direction of movement of the slider body. For example, a joining member (not shown) formed by a screw is inserted therethrough. It is formed in a possible shape. Further, each sleeve-side through-hole 14 is formed at a position corresponding to four slider-side mounting holes (not shown) that are formed on the end surface of the slider body in the moving direction and to which the front end side of the joining member is fitted. Has been.

[Second oil passage]
As shown in FIGS. 15 and 16C, the second oil passage 16 is, for example, a concave groove formed on the joint surface of the end cap body 2 with the slider body, and the left side oil supply holes 8b to 8e. And the recess 10 are communicated with each other. Specifically, the second oil passage 16 communicates the second oil passage 16a that communicates the left side oil supply holes 8b and 8c with the recess 10 and the right oil supply holes 8d and 8e and the recess 10 communicated with each other. 2 oil passages 16b.
[Fourth oil passage]
As shown in FIGS. 15 and 16C, the fourth oil passage 217 is, for example, a concave groove formed on the joint surface of the end cap body 2 with the slider body, and includes the front oil supply hole 8a and the recess 10. And communicate with.
[Fifth oil passage]
As shown in FIGS. 15 and 16C, the fifth oil passage 218 is, for example, a concave groove formed on the joint surface of the end cap body 2 with the slider body, and the upper surface oil supply hole 8 f and the recess 10. And communicate with.

[Oil channel unit]
As shown in FIGS. 15, 16 (a), (b), the oil passage unit 4 is made of, for example, a resin material such as a thermoplastic elastomer, and is a plate that fits into the recess 10 in a plurality of layers in the thickness direction. It is formed into a shape. As shown in FIGS. 16A and 16B, a sixth oil passage 220 is formed on the front surface 4 a of one oil passage unit 4, and the sixth oil passage 220 is formed on the back surface 4 b of one oil passage unit 4. Seven oil passages 221 are formed.
The plurality of oil passage units 4 fitted (accommodated) in the recesses 10 are respectively provided with the same sixth oil passage 220 and seventh oil passage on the front surface 4a and the back surface 4b. For example, the front surfaces 4a and 4A and the back surfaces 4b and 4B are disposed in the recess 10 so as to face each other.

[Sixth oil passage]
The sixth oil passage 220 is a state in which the oil passage unit 4 is fitted in the recess 10, and the first oil passage 12, the fourth oil passage 217, and the fifth oil passage as shown in FIG. It is formed on the front surface 4 a of the oil passage unit 4 as a concave groove communicating with the passage 218.
[Seventh oil passage]
As shown in FIG. 16B, the seventh oil passage 221 is a concave groove that communicates the two first oil passages 12 and 12 with the two second oil passages 16 and 16 on one side surface, respectively. Is formed on the back surface 4b of the oil passage unit 4.

Here, as shown in FIGS. 15 to 17, two oil passage units 4 </ b> A and 4 </ b> B are provided in the recess 10 with the front surfaces 4 a and 4 a facing each other. A communication mode of the sixth oil passage 220 and the seventh oil passage 221 formed in each of 4B will be described.
As shown in FIG. 18, the sixth oil passage 220a formed on the front surface 4a of the one oil passage unit 4A includes the first oil passages 12a and 12b, the fourth oil passage 217, and the fifth oil passage 217. It communicates with the oil passage 218.

Further, as shown in FIG. 19, the seventh oil passage 221a formed on the back surface 4b of the one oil passage unit 4A is connected to the first oil passage 12a and the side oil supply hole 8c that opens to one side surface. The second oil passage 16a communicates with the first oil passage 12b and the second oil passage 16a connected to the side surface oil supply hole 8b opened on one side surface.
As shown in FIG. 20, the seventh oil passage 221a formed on the back surface 4b of the other oil passage unit 4B is connected to the first oil passage 12b and the side oil supply hole 8e that opens to the other side surface. While communicating with the oil passage 16b, it communicates with the first oil passage 12a and the second oil passage 16b connected to the side surface oil supply hole 8d that opens to the other side surface.

Here, although not shown, in the other oil passage unit 4B, the sixth oil passage 220a formed on the front surface 4a includes the first oil passages 12a and 12b and the fourth oil passage 217. And a fifth oil passage 218.
Thus, in this embodiment, the oil passage unit 4 having the same specification (standard) in which the sixth oil passage 220 is formed on the front surface 4a and the seventh oil passage 221 is formed on the back surface 4b is thick. It is accommodated in the recess 10 of the end cap body 2 in the vertical direction. Therefore, since the communication mode of the oil passage 22 is functionally separated by the sixth oil passage 220 and the seventh oil passage 221, the lubricant can be supplied regardless of the oil supply position and the attitude of the linear motion guide device. Further, since the oil passage unit 4 having the same specification (standard) is used, the manufacturing cost can be reduced and assembly errors can be reduced. Furthermore, since a plurality of oil passage units 4 are used, the degree of freedom in designing the oil passage is high and the change is easy.

[Modification]
In the above-described configuration, the seventh oil passage 221 is formed as a concave groove that connects the two first oil passages 12 and 12 and the two second oil passages 16 and 16 on one side surface, respectively. It is an aspect formed on the back surface 4b of the above, and is a preferable configuration for achieving the purpose of supplying the lubricant regardless of the oil supply position and the attitude of the linear motion guide device.
However, as an aspect of the seventh oil passage 221, as a modified example, the seventh oil formed on the back surface 4b of the oil passage unit 4 according to the installation manner of the end cap and the installation manner of the linear motion guide device. The path 221 only needs to communicate with the two first oil paths 12 and 12 and the two second oil paths 16 and 16 on the side surface regardless of one of the other.

(Fifth embodiment)
Next, a fifth embodiment of the end cap and the linear motion guide device using the end cap will be described with reference to the drawings. In addition, since this embodiment differs only in the number of oil path units from the above-mentioned 4th Embodiment, description is abbreviate | omitted about the same structure which attached | subjected the same code | symbol as the above-mentioned 4th Embodiment.
As shown in FIGS. 21 (a) and 21 (b), the end cap of this embodiment is configured so that the three oil passage units 4A, 4B, 4C are arranged in the oil passage units 4A, 4B in the direction in which the recess 10 opens. The front surfaces 4a and 4a and the back surfaces 4b and 4b of the oil passage units 4B and 4C are provided so as to face each other.
And also in this embodiment which used three oil path units 4, as shown in FIG.21 (b), the 1st oil path 12 is each 7th oil path 221b of oil path unit 4A, 4B, 4C. The diameter is designed to communicate everything.
Thus, the oil passage unit 4 provided in the end cap of the present embodiment is not limited to the two described above, and three or more oil passage units 4 having the same specification (standard) are provided so as to overlap each other. The design is highly flexible and easy to change.

(Sixth embodiment)
Next, a sixth embodiment of the end cap will be described with reference to the drawings. In addition, since this embodiment differs only in the shape of the 7th oil path from the above-mentioned 4th Embodiment, it is set as description of only an oil path unit, and attaches | subjects the same code | symbol as the above-mentioned 4th Embodiment. A description of the configuration is omitted.
As shown in FIG. 22, the oil passage unit 4 provided in the end cap of the present embodiment has an extension portion 23 protruding outward in at least one of the sixth oil passage 220 and the seventh oil passage 221. Is provided. The extension 23 is accommodated in the first oil passage 12 when the oil passage unit 4 is installed in the recess 10 (see FIGS. 15 and 16).
By adopting such a configuration, the lubricant flowing through the first oil passage 12, the sixth oil passage 220, and the seventh oil passage 221 receives inertia, and the oil passage unit 4 and the end cap body 2 It is possible to prevent leakage from the gap.

As described above, in the present invention, the oil passage unit provided in the recess of the end cap body is a plurality of oil passage units having the same specification (standard), and the sixth oil passage and By forming each of the seventh oil passages, the lubricant can be efficiently supplied regardless of the oil supply position and posture.
The linear motion guide device of the present embodiment is suitable for a linear motion guide device used in general machine devices such as machine tools and conveyor devices.
Although the present invention has been described above with reference to specific embodiments, it is not intended that the present invention be limited by these descriptions. From the description of the invention, other embodiments of the invention will be apparent to persons skilled in the art, along with various variations of the disclosed embodiments. Therefore, it is to be understood that the claims encompass these modifications and embodiments that fall within the scope and spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 End cap 2 End cap main body 4 Oil path unit 6 Direction change path 8 Oil supply hole 8a Front surface oil supply hole 8b Side surface oil supply hole (side surface oil supply hole)
8c Side oil hole (side oil hole)
DESCRIPTION OF SYMBOLS 10 Concave part 12 1st oil path 14d Oil path unit side through-hole 16 2nd oil path 20 3rd oil path 217 4th oil path 218 5th oil path 220 6th oil path 221 7th oil Road 22 Oil path 100 Linear motion guide device 111 Rail-side rolling surface 110 Guide rail 120 Slider 120A Slider body

Claims (9)

A load rolling path formed between the guide rail and the slider main body, and a rolling element return path of the slider main body, which is joined to an end surface in the moving direction of the slider main body straddling the guide rail so as to be relatively movable; A direction change path that communicates,
An oil passage that connects the front oil supply hole and the side oil supply hole formed on the outer peripheral surface and the direction change passage is formed,
The end cap includes an end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body and in which the oil passage unit can be fitted, and is formed on a joint surface with the slider body, and communicates the direction change path and the recess. A first oil passage to
A second oil passage communicating the first oil passage and the side surface oil supply hole;
The oil passage unit has a third oil passage communicating with the first oil passage and the second oil passage through the front oil supply hole in a state of being fitted in the recess,
The end cap, wherein the second oil passage and the third oil passage are arranged so as to overlap each other along the moving direction of the slider body in the end cap body.   The end cap according to claim 1, wherein the second oil passage is composed only of an inclined oil passage that is inclined downward. A load rolling path formed between the guide rail and the slider main body, and a rolling element return path of the slider main body, which is joined to an end surface in the moving direction of the slider main body straddling the guide rail so as to be relatively movable; A direction change path that communicates,
An oil passage that connects the front oil supply hole and the side oil supply hole formed on the outer peripheral surface and the direction change passage is formed,
The end cap includes an end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body and in which the oil passage unit can be fitted, and is formed on a joint surface with the slider body, and communicates the direction change path and the recess. A first oil passage to
Have
The oil passage unit includes a second oil passage communicating the first oil passage and the side surface oil supply hole;
A first oil passage fitted in the recess, and a third oil passage communicating with the second oil passage through the front oil supply hole;
The end cap, wherein the second oil passage and the third oil passage are arranged so as to overlap each other along the moving direction of the slider body in the end cap body.   The end cap according to claim 3, wherein the second oil passage includes only an inclined oil passage that is inclined downward. A load rolling path formed between the guide rail and the slider main body, and a rolling element return path of the slider main body, which is joined to an end surface in the moving direction of the slider main body straddling the guide rail so as to be relatively movable; A direction change path that communicates,
An oil passage that connects the front oil supply hole and the side oil supply hole formed on the outer peripheral surface and the direction change passage is formed,
An end cap body having a part of the direction change path and the oil path, and an oil path unit having a part of the oil path,
The end cap body is formed on a joint surface with the slider body, and is formed on a joint surface with the slider body, and a recess formed on the joint surface with the slider body. A first oil passage communicating the passage and the recess;
A second oil passage communicating the recess and the side surface oil supply hole;
A fourth oil passage communicating the recess and the front oil supply hole;
A fifth oil passage communicating the recess and the upper surface oil supply hole,
The oil passage unit has a sixth oil passage communicating with the first oil passage, the fourth oil passage, and the fifth oil passage on the front surface, and the first oil passage and the first oil passage on the back surface. An end cap having a seventh oil passage communicating with the two oil passages. A load rolling path formed between the guide rail and the slider main body, and a rolling element return path of the slider main body, which is joined to an end surface in the moving direction of the slider main body straddling the guide rail so as to be relatively movable; A direction change path that communicates,
An oil passage that connects the upper surface oil supply hole, the front oil supply hole, the side oil supply hole, and the direction change passage formed on the outer peripheral surface is formed,
An end cap body having a part of the direction change path and the oil path, and a plurality of oil path units having a part of the oil path,
The end cap body is formed on a joint surface with the slider body, and is formed on a joint surface with the slider body, and a recess formed on the joint surface with the slider body. A first oil passage communicating the passage and the recess;
Two second oil passages communicating the recess and the side surface oil supply hole;
A fourth oil passage communicating the recess and the front oil supply hole;
A fifth oil passage communicating the recess and the upper surface oil supply hole,
The oil passage unit has a sixth oil passage communicating with the first oil passage, the fourth oil passage, and the fifth oil passage on the front surface, and two first oil passages on the back surface. And an end cap that communicates with the two second oil passages on one side surface.   The end cap according to claim 5 or 6, wherein the two oil passage units are fitted into the concave portion with the front surfaces facing each other.   The end cap according to any one of claims 5 to 7, wherein an extension portion in which at least one of the sixth oil passage and the seventh oil passage projects into the first oil passage is provided.   A linear motion guide device comprising the end cap according to claim 1.

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