TWI614421B - Closing member mounting hole sealing member and motion guiding device - Google Patents

Abstract

The present invention provides a rail member mounting hole closing member which is easy to perform a driving operation and which can prevent a rail member mounting hole from being collapsed by an external force due to an external force.

The rail member mounting hole closing member 21 of the present invention includes a first member 22 on which a head portion 4a of the fastening member 4 disposed in the rail member mounting hole 5, and the like, and a second member 24 that will orbit the rail The component mounting hole 5 is closed. Inserting either one of the first member 22 and the second member 24 to the other, whereby the other of the first member 22 and the second member 24 is expanded in the diameter direction, so that the first member 22 and The other of the second members 24 is fixed to the inner surface of the rail member mounting hole 5 or the like.

Description

Closing member mounting hole sealing member and motion guiding device

The present invention relates to a closure member for a rail member mounting hole that closes a rail member mounting hole of a rail member of a motion guiding device.

The motion guiding device is formed by arranging a plurality of rolling elements such as balls and rollers, and assembling the moving member to a rail member extending in the longitudinal direction. The rail member is attached to the base, and the moving member is attached to a movable body such as a platform. The motion guiding device is used for guiding linear motion (linear motion or curved motion) of an active body such as a platform. The movement of the movable body can be guided with high precision and briskness by utilizing the rolling motion of the rolling elements.

In order to fix the rail member to the base, on the upper surface of the rail member, a plurality of rail member mounting holes are opened at intervals in the longitudinal direction. a fastening member such as a bolt is passed through the rail member mounting hole, and the fastening member is screwed into the base, whereby the head of the fastening member is carried on the bearing surface of the drill string pit of the rail member mounting hole, thereby guiding the rail The member is fastened to the base.

When foreign matter such as dust adheres to the rolling element rolling portion of the rail member, the rolling motion of the rolling element is hindered, and the guiding accuracy is lowered. In order to prevent such a situation, foreign matter adhering to the scraping rail member is attached to both end faces of the moving member in the moving direction to prevent the foreign matter from intruding into the sealing member inside the moving member. However, in the case of using a motion guiding device in an environment with a lot of dust, it will also be in the rail member mounting hole of the rail member. Accumulate foreign matter such as dust. The foreign matter accumulated in the rail member mounting hole may be removed by the sealing member on the upper surface of the scraping rail member, and there is a possibility of invading the inside of the moving member. The foreign matter that has entered the inside of the moving member has a possibility of adhering to the rolling element rolling portion and hindering the smooth rolling motion of the rolling element.

In order to prevent dust from accumulating in the rail member mounting hole, the rail member mounting hole is used to close the mounting hole of the rail member with a closing member (also referred to as a cover). Patent Document 1 discloses a sealing member for a rail member mounting hole including a closing member body and a circumferential covering member provided on the outer peripheral surface of the closing member body. The rail member mounting hole closing member is attached to the rail member as described below. First, the closing member is temporarily placed on the rail member in such a manner as to close the rail member mounting hole. Then, the temporarily placed closing member is driven into the rail member mounting hole such that the upper surface of the closing member and the surface of the rail member are flush with each other. After the closing member is inserted into the rail member mounting hole, the outer peripheral member of the closing member is elastically deformed by being sandwiched between the outer peripheral surface of the closing member body and the inner peripheral surface of the rail member mounting hole. Thereby, the position of the closing member is kept fixed.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Publication No. 4-179914

However, in the conventional closing member for a rail member mounting hole, since the closing member temporarily placed on the upper surface of the rail member is driven, there is a problem that workability is poor. If the work is unskilled, there is a case where the closing member is damaged by the sliding of the closing member or the like.

Further, since only the interference fit (elastic deformation) of the outer diameter portion of the closing member is fixed, there is a problem that the inner diameter size and the surface roughness of the rail member mounting hole must be managed. If the interference allowance is insufficient, there is also a collapse or collapse of the closure member, thereby causing it to fall off. Conversely, if the interference margin is excessive, it is necessary to perform the work of removing the burr generated from the outer diameter portion of the sealing member, or cause the sealing member to be deformed to deteriorate the appearance.

Accordingly, it is an object of the present invention to provide a closing member for a rail member mounting hole of a motion guiding device which is easy to perform a driving operation and which can prevent a closing member from collapsing due to an external force.

In order to solve the above problems, an aspect of the present invention is a closing member for a rail member mounting hole, which is used in a motion guiding device that movably assembles a moving member to a rail member, and is used for the above-mentioned rail The member is attached to the rail member mounting hole of the base and is closed, and includes a first member that is placed on a head of the fastening member disposed on the rail member mounting hole, a hole in a head portion of the fastening member, Or a bottom surface formed on the concave portion of the rail member; and a second member that closes the rail member mounting hole; and inserts one of the first member and the second member into the other, thereby The other of the first member and the second member is expanded in the diameter direction, and the other of the first member and the second member is fixed to the inner surface of the rail member mounting hole, and the tightening The inner surface of the hole of the head of the solid member or the inner surface of the concave portion of the rail member.

According to the present invention, since the closing member is supported by the head of the fastening member or the like, the driving operation is stabilized, and the closing member is prevented from being accidentally deformed and collapsed by the driving. Further, the present invention is the other of the first member and the second member that expand in the diameter direction The structure is fixed to the inner surface of the rail member mounting hole, etc., so that the closing member can be prevented from collapsing or falling off due to an external force.

1‧‧‧ Track (track member)

1a‧‧‧ rolling body rolling part

1b‧‧‧ surface

1d‧‧‧ recess

1e‧‧‧ Cover mounting slot

2‧‧‧moving block

2a‧‧‧Load rolling element rolling part

3‧‧‧ rolling elements

4‧‧‧Bolts (fastening members)

4a‧‧‧Bolt head

4a1‧‧‧ Hole in the head of the bolt

4b‧‧‧ screw section

5‧‧‧Track mounting holes (track member mounting holes)

5a‧‧‧Drilling pit

5b‧‧‧Bolt insertion hole

6'‧‧‧direction conversion path

7‧‧‧No load return path

8‧‧‧Base

9‧‧‧Interval

10‧‧‧With

11‧‧‧Mobile block ontology

11-1‧‧‧Central Department

11-2‧‧‧ Side wall

12‧‧‧End board

13‧‧‧ Sealing members

21, 31, 41, 51, 61‧‧‧ Closed components

22, 32, 42‧‧ ‧ casing (first component)

23‧‧‧Combination Department

23a‧‧‧Incision

23b‧‧‧Rift

24, 34, 44‧‧ ‧ plugs (second component)

24a, 34a, 44a‧‧‧ plug head

24a1‧‧‧ plug surface

24b, 34b, 44b‧‧‧ plug shaft

25‧‧‧Awnings

26‧‧‧Plastic hammer

42a‧‧‧ Body Department

42b‧‧‧Flange

52‧‧‧ Cover

62‧‧‧ Plug (first component)

64‧‧‧ casing (second component)

64a‧‧‧ head

64b‧‧‧Walls

L1‧‧‧ length

L2‧‧‧ length

1‧‧‧外徑

1‧‧‧ outside diameter

2‧‧‧內徑

2‧‧‧Inner diameter

3‧‧‧外徑

3‧‧‧ outside diameter

4‧‧‧外徑

4‧‧‧ outside diameter

5‧‧‧內徑

5‧‧‧Inner diameter

Δ1‧‧‧ gap

Δ2‧‧‧ gap

Fig. 1 is a perspective view (including a partial cross-sectional view) showing a movement guiding device to which a closing member for a rail mounting hole according to an embodiment of the present invention is attached.

Figure 2 is a front elevational view of the motion guide after the end plate has been removed.

Fig. 3 is a perspective view of the rail mounting hole closing member according to the first embodiment of the present invention (Fig. 3(a) is a top surface side perspective view, and Fig. 3(b) is a lower surface side perspective view).

Fig. 4 is a cross-sectional view showing a sealing member for a rail mounting hole of the above embodiment.

Fig. 5 is a view showing a step of driving the rail mounting hole sealing member of the above embodiment into the mounting hole of the rail (Fig. 5(a) shows the state in which the closing member is self-supporting the head of the bolt, Fig. 5(b) Indicates the state after entering the closed member).

Fig. 6 is a view showing a step of deforming the plug and the sleeve when the plug of the above embodiment is inserted into the sleeve (Fig. 6(a) shows the state before the plug is inserted into the sleeve, Fig. 6 (Fig. 6 b) indicates the state at the time of insertion, and Fig. 6(c) shows the state after the insertion).

Fig. 7 is a side view of a sealing member for a rail mounting hole according to a second embodiment of the present invention.

Fig. 8 is a view showing a step of driving the rail mounting hole sealing member according to the second embodiment of the present invention into the mounting hole of the rail (Fig. 8(a) shows a state in which the closing member is self-supporting the head of the bolt, 8(b) indicates the state after the closing member is driven).

Fig. 9 is a view showing a step of driving the rail mounting hole sealing member according to the third embodiment of the present invention into the mounting hole of the rail (Fig. 9(a) shows a state in which the closing member is self-supported to the head of the bolt, 9(b) indicates the state after the closing member is driven).

Figure 10 is a perspective view of a sealing member for a rail mounting hole according to a fourth embodiment of the present invention. (Fig. 10(a) shows a top surface side perspective view, and Fig. 10(b) shows a lower surface side perspective view).

Figure 11 is a view showing a step of driving the rail mounting hole closing member of the fourth embodiment of the present invention into the mounting hole of the rail (Fig. 11(a) shows the state in which the closing member is self-supporting the head of the bolt, 11(b) indicates the state after the closing member is driven).

Figure 12 is a cross-sectional view showing a sealing member for a rail mounting hole according to a fifth embodiment of the present invention (Fig. 12(a) shows a state in which the closing member is self-supported to the head of the bolt, and Fig. 12(b) shows a driving member in the closing member. After the state).

Hereinafter, a sealing member for a rail mounting hole (hereinafter simply referred to as a closing member) according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, a motion guiding device to which a closing member is attached will be described. In the drawings, the same components are denoted by the same reference numerals.

1 is a perspective view showing a motion guiding device, and FIG. 2 is a front view showing a motion guiding device after the end plate is removed. The motion guiding device includes: a rail 1 as a rail member that linearly extends in a longitudinal direction; and a moving block 2 that linearly moves in a longitudinal direction by a plurality of rolling elements 3 such as a ball or a roller. A component that is assembled to the moving member of the track 1.

As shown in Fig. 1, on the upper surface of the rail 1 (i.e., the surface opposite to the base), a plurality of rail mounting holes 5 as rail member mounting holes are formed at intervals in the longitudinal direction. A bolt 4 such as a hexagon socket head bolt is inserted into the rail mounting hole 5 as a fastening member for fixing the rail 1 to the base. As shown in the front view of FIG. 2, a drill string hole 5a having a diameter larger than the head portion 4a of the bolt 4 and a bolt insertion hole 5b slightly larger than the screw portion 4b of the bolt 4 are formed concentrically in the rail mounting hole 5 (also Refer to Figure 5(a)). The height of the drill string hole portion 5a is set to be higher than the height of the head portion 4a of the bolt 4 so that the bolt 4 is completely immersed in the rail mounting hole 5. Pass the bolt 4 through the rail mounting hole 5 and screw the bolt 4 into it To the base 8, whereby the head 4a of the bolt 4 is carried on the bearing surface of the drill string hole 5a of the rail 1, thereby fixing the rail 1 to the base 8. An active system for linear motion such as a platform is attached to the upper surface of the moving block 2 using a bolt (not shown). 1 and 2 show a state in which the bolt 4 is passed through the rail mounting hole 5 of the rail 1 and the bolt 4 is fastened to the base 8. Thereafter, the rail mounting hole 5 is closed by the closing member, but the state before the rail mounting hole 5 is closed by the closing member is shown in Figs. 1 and 2 .

As shown in Fig. 2, the rail 1 has a substantially square shape in cross section, and a plurality of rolling element rolling portions 1a on which the rolling elements are rolled are formed on the upper surface and the side surfaces. The rolling element rolling portion 1a is elongated and elongated along the longitudinal direction of the rail 1. In this embodiment, a total of four rolling element rolling portions 1a are formed on both sides of the rail 1.

As shown in FIG. 1, the moving block 2 includes a moving block main body 11 and end plates 12 provided at both end faces of the moving block main body 11 in the moving direction. The moving block main body 11 includes a central portion 11-1 that faces the upper surface of the rail 1 and a side wall portion 11-2 that extends from the left and right sides in the width direction of the central portion 11-1 to the lower side, and The left and right sides of the track 1 oppose each other. The moving block main body 11 is formed with a load rolling element rolling portion 2a opposed to the rolling element rolling portion 1a of the rail 1, and a no-load return path 7 parallel to the load rolling element rolling portion 2a. The end plate 12 is formed on the outer peripheral side of the direction changing path 6' to which the load rolling element rolling portion 2a and the no-load return path 7 are connected.

The rolling element circulation path is formed by the load rolling element rolling portion 2a of the moving block 2, the no-load return path 7, and the direction changing path 6'. A plurality of rolling elements 3 are accommodated in the rolling element circulation path. The plurality of rolling elements 3 are held in series and rotatably held by the holder 8. The holder 8 includes a spacer 9 interposed between the rolling elements, and a belt 10 that connects the spacers.

A U-shaped cross section is formed between the track 1 and the moving block 2 surrounding it gap. In order to close the gap, a sealing member 13 corresponding to the outer shape of the rail 1 is attached to both end faces of the moving block 2 in the moving direction. The sealing member 13 prevents foreign matter such as dust, dust, and chips from entering the inside of the moving block 2 and adhering to the rolling elements 3 .

However, in the case where the motion guiding device is used in an environment with a lot of dust, the rail mounting hole 5 of the rail 1 still accumulates foreign matter. The foreign matter accumulated in the rail mounting hole 5 cannot be removed by the sealing member 13 on the upper surface of the scraping rail 1, so that there is a possibility of invading the inside of the moving block 2. The foreign matter that has entered the inside of the moving block 2 is likely to adhere to the rolling element rolling portion 1a and the load rolling element rolling portion 2a, thereby hindering the smooth rolling motion of the rolling elements 3. To prevent this, the rail mounting hole 5 of the rail 1 is covered by the closing member 21 (see FIG. 5(b)).

Fig. 3(a) is a perspective view showing the upper surface side of the closing member 21, and Fig. 3(b) is a perspective view showing the lower surface side of the closing member 21. As shown in FIG. 3(a), the closing member 21 is provided with a sleeve 22 as a first member placed on the head portion 4a of the bolt 4, and a plug 24 as a second member integrally formed on the sleeve 22.

4 is a cross-sectional view along the center line of the closing member 21. The sleeve 22 is cylindrical. The plug 24 has a disk-shaped head portion 24a and a cylindrical shaft portion 24b having a diameter smaller than the outer diameter of the head portion 24a. The head 24a of the plug 24 has a function of covering the rail mounting hole 5, and the shaft portion 24b of the plug 24 has a function of entering the sleeve 22 to expand the sleeve 22 in the diameter direction. The center line of the plug 24 coincides with the center line of the sleeve 22, and the end portion of the outer peripheral portion of the shaft portion 24b of the plug 24 is joined to the end portion of the inner circumference of the sleeve 22. A slit 23a having a circular arc shape is formed over the entire circumference so as to be easily separated from the joint portion 23 of the plug 24 and the sleeve 22.

The plug 24 and the sleeve 22 of this embodiment are resin molded articles. Regarding the material of the plug 24 and the sleeve 22, for example, polypropylene (PP, for use in consideration of environmental resistance) is used. Polypropylene), polyethylene (PE, polyethylene). Since the shaft portion 24b of the plug 24 is undercut, a slide core for molding the undercut shaft portion 24b is assembled in the mold during resin molding. Further, the material of the plug 24 and the sleeve 22 is not limited to a resin, and may be a metal such as stainless steel, aluminum, or brass, and the materials may be different from each other. The plug 24 and the sleeve 22 can also be integrally formed by being followed.

1係軌道安裝孔5之鑽柱坑部5a之內徑

2(參照圖5(a))以下。插塞24之頭部24a與軌道安裝孔5之鑽柱坑部5a之嵌合使用於該等之間具有間隙之餘隙配合。套管22之外徑

3亦為軌道安裝孔5之鑽柱坑部5a之內徑

2以下。套管22與軌道安裝孔5之鑽柱坑部5a之嵌合使用於該等之間具有間隙之餘隙配合。插塞24之軸部24b之外徑

4大於套管22之內徑

5。插塞24之軸部24b與套管22之嵌合使用於該等之間具有干涉裕度之干涉配合。 The dimensions of the plug 24 and the sleeve 22 are as follows. The outer diameter of the head 24a of the plug 24

The inner diameter of the drill string hole 5a of the 1 series rail mounting hole 5

2 (refer to Fig. 5 (a)) below. The fitting of the head portion 24a of the plug 24 with the drill string hole portion 5a of the rail mounting hole 5 is used for a clearance fit with a gap therebetween. Outer diameter of the sleeve 22

3 is also the inner diameter of the drill string hole 5a of the rail mounting hole 5.

2 or less. The fitting of the sleeve 22 to the drill string hole portion 5a of the rail mounting hole 5 is used for a clearance fit with a gap therebetween. The outer diameter of the shaft portion 24b of the plug 24

4 is larger than the inner diameter of the sleeve 22

5. The fitting of the shaft portion 24b of the plug 24 to the sleeve 22 is used for interference fit with interference margin between the two.

The length L1 of the head 24a of the plug 24 to the sleeve 22 is such that when the plug 24 is driven until the upper surface 24a1 of the head 24a of the plug 24 and the surface 1b of the rail 1 are flush with each other, at the plug 24 A gap δ1 is formed between the head portion 24a and the sleeve 22 (see FIG. 5(b)), and the plug 24 can be further inserted into the sleeve 22. Specifically, the length of the head 24a to the sleeve 22 of the plug 24 is set to be longer than the upper surface 24a1 to the track 1 of the head 24a of the plug 24 when the closing member 21 is self-supporting the head 24a of the bolt 4. The length L2 of the surface 1b (see Fig. 5(a)). If the gap δ1 disappears between the head 24a of the plug 24 and the sleeve 22, the plug 24 cannot be further driven, resulting in the upper surface 24a1 of the head 24a of the plug 24 rising from the surface 1b of the rail 1. Start. The upper surface 24a1 of the head portion 24a of the plug 24 and the surface 1b of the rail 1 can be disposed in the same plane by the gap δ1 between the head portion 24a of the plug 24 and the sleeve 22.

Fig. 5 is a view showing a step of driving the closing member 21 of the present embodiment into the mounting hole 5 of the rail. As described above, in the rail mounting hole 5, the drill string hole portion 5a and the bolt insertion hole 5b are formed concentrically. When the bolt 4 is screwed into the base, the head 4a of the bolt 4 is carried on the bearing surface of the drill string hole 5a of the rail 1, thereby fixing the rail 1 to the base. The closing member 21 of the present embodiment is attached to the rail mounting hole 5 after the bolt 4 is placed in the rail mounting hole 5.

First, as shown in Fig. 5 (a), the closing member 21 is inserted into the drill string hole portion 5a of the rail mounting hole 5, and the closing member 21 is self-supported to the head portion 4a of the bolt 4. Since the fitting of the sleeve 22 of the closing member 21 and the drill string hole portion 5a of the rail mounting hole 5 is a clearance fit, the closing member 21 is easily inserted into the drill string hole portion 5a. Although referred to as a clearance fit, the gap between the sleeve 22 of the closing member 21 and the drill string hole portion 5a is also extremely small. Therefore, as long as the closing member 21 is inserted into the rail mounting hole 5, the closing member 21 can be positioned at the center of the rail mounting hole 5.

Then, the closing member 21 is driven into the rail mounting hole 5. Preferably, the opening of the closing member 21 is performed by placing the pad 25 having the upper and lower surfaces flat on the closing member 21, hitting the pad 25 with the plastic hammer 26, but the closing member can also be used by the plastic hammer 26. 21 directly entered. By driving the closing member 21 through the pad 25, it is easy to drive the upper surface of the closing member 21 to be flush with the surface 1b of the rail 1.

The sleeve 22 of the closure member 21 is placed on the head 4a of the bolt 4. The closing member 21 before use is a single piece, but as shown in Fig. 5(b), when the closing member 21 is driven, the plug 24 of the closing member 21 and the sleeve 22 are separated by brittle fracture. The closing member 21 is separated into a plug 24 of two parts and a sleeve 22 to function. If the shaft portion 24b of the plug 24 enters the sleeve 22, the shaft portion 24b of the plug 24 interferes with the sleeve 22 ( Δ2 represents a negative gap), so that the plug 24 is pressed into the sleeve 22, and the sleeve 22 is expanded in the diameter direction (elastic deformation or plastic deformation). Thereby, the sleeve 22 is fixed in the form of the inner surface of the drill string hole portion 5a supported by the rail mounting hole 5.

1大於套管22之外徑

3。如圖6(b)所示，若打入封閉構件21，則於插塞24與套管22之結合部23之間傾斜地產生裂痕23b，造成插塞24與套管22分離，從而將插塞24之軸部24b插入至套管22之內側。如此一來，套管22於直徑方向上膨脹，套管22之外徑

3變得大於插塞24之頭部24a之外徑

1。藉此，套管22以於軌道安裝孔5之鑽柱坑部5a之內面撐開之形態被固定。如圖6(c)所示，於在插塞24之頭部24a之上表面24a1與軌道1之表面1b成為同一平面之前進行打入時，以更具有打入裕度之方式，於插塞24之頭部24a與套管22之間空出間隙δ1。亦於插塞24與螺栓4之頭部4a之間，以具有打入裕度之方式空出間隙。 Figure 6 shows the deformation of the plug 24 and the sleeve 22 when the plug 24 is inserted into the sleeve 22. As shown in Fig. 6(a), in the state in which the plug 24 is integrated with the sleeve 22, the outer diameter of the head 24a of the plug 24 is shown.

1 is larger than the outer diameter of the sleeve 22

3. As shown in FIG. 6(b), if the closing member 21 is driven, the crack 23b is obliquely generated between the plug 24 and the joint portion 23 of the sleeve 22, causing the plug 24 to be separated from the sleeve 22, thereby inserting the plug. The shaft portion 24b of 24 is inserted into the inside of the sleeve 22. As a result, the sleeve 22 expands in the diameter direction, and the outer diameter of the sleeve 22

3 becomes larger than the outer diameter of the head 24a of the plug 24

1. Thereby, the sleeve 22 is fixed in such a manner that the inner surface of the drill string hole portion 5a of the rail mounting hole 5 is expanded. As shown in FIG. 6(c), when the upper surface 24a1 of the head portion 24a of the plug 24 is flushed with the surface 1b of the track 1 to be flushed, the plug is inserted in a manner further having a margin of insertion. A gap δ1 is left between the head 24a of the 24 and the sleeve 22. Also between the plug 24 and the head 4a of the bolt 4, the gap is vacant with a punch margin.

Fig. 7 shows a closing member 31 according to a second embodiment of the present invention. Similarly to the closing member 21 of the first embodiment, the closing member 31 of this embodiment includes a sleeve 32 as a first member and a plug 34 as a second member integrally formed in the sleeve 32. The plug 34 has a disk-shaped head portion 34a and a shaft portion 34b extending from the head portion 34a in the vertical direction. The sleeve 32 is formed in a cylindrical shape. The sleeve 32 of this embodiment is smaller than the sleeve 22 of the closing member 21 of the first embodiment, and is inserted into a hole (a hole for a hexagonal wrench) of the head 4a of the bolt 4 (see Fig. 5(a)).

Fig. 8 is a view showing a step of driving the closing member 31 of the second embodiment into the mounting hole 5 of the rail. First, as shown in Fig. 8(a), the sleeve of the closure member 31 is used. 32 is inserted into the hole 4a1 of the head portion 4a of the bolt 4, so that the closing member 31 is self-supported to the hole 4a1 of the head portion 4a of the bolt 4. The fitting of the sleeve 32 of the closing member 31 with the hole 4a1 of the head 4a of the bolt 4 is set to a clearance fit.

Then, as shown in FIG. 8(b), after the closing member 31 is driven into the rail mounting hole 5, the plug 34 of the closing member 31 and the sleeve 32 are separated by brittle fracture, thereby the shaft portion 34b of the plug 34. Inserted into the sleeve 32. After the shaft portion 34b of the plug 34 enters the sleeve 32, the sleeve portion 32 expands (elastically deforms or plastically deforms) in the diametrical direction because the shaft portion 34b of the plug 34 interferes with the sleeve 32. Thereby, the sleeve 32 is fixed in the form of the inner surface of the hole 4a1 supported by the head 4a of the bolt 4.

The sleeve 32 of the closing member 31 can be fixed to the inner surface of the hole 4a1 of the head portion 4a of the bolt 4 as in the closing member 31 of the second embodiment. If the coaxiality of the bolt 4 with the rail mounting hole 5 cannot be ensured, the closing member 31 will be fixed to the rail 1 in a state of being offset from the center of the rail mounting hole 5, and therefore, it is preferable to ensure the coaxiality of the bolt 4 and the rail mounting hole 5 degree.

Fig. 9 is a view showing a step of driving the closing member 41 of the third embodiment of the present invention into the mounting hole 5 of the rail. Similarly to the closing member 21 of the first embodiment and the closing member 31 of the second embodiment, the closing member 41 of the first embodiment has a sleeve 42 as a first member and a second portion integrally formed in the sleeve 42. Plug 44 of the component. The plug 44 has a disk-shaped head portion 44a and a shaft portion 44b extending from the head portion 44a in the vertical direction. The sleeve 42 has a cylindrical main body portion 42a and a flange portion 42b that protrudes in the radial direction from the upper end portion of the main body portion 42a. A head portion 44a of the plug 44 is placed on the flange portion 42b. The plug 44 and the sleeve 42 are integrally formed by being continued. The sleeve 42 is inserted into the hole 4a1 (a hole for a hex wrench) of the head portion 4a of the bolt 4 in the same manner as the sleeve 32 of the second embodiment.

First, as shown in Fig. 9(a), the sleeve 42 of the closing member 41 is inserted into the hole 4a1 of the head portion 4a of the bolt 4, and the closing member 41 is self-supported to the hole 4a1 of the head portion 4a of the bolt 4. Then, as shown in FIG. 9(b), after the closing member 41 is driven, the shaft portion 44b of the plug 44 is inserted into the body portion 42a of the sleeve 42. After the shaft portion 44b of the plug 44 is inserted into the body portion 42a of the sleeve 42, the shaft portion 44b of the plug 44 is interference-fitted with the body portion 42a of the sleeve 42, so that the body portion 42a of the sleeve 42 is diametrically oriented. Upper expansion (elastic deformation or plastic deformation). Thereby, the main body portion 42a of the sleeve 42 is fixed in a manner of being expanded in the hole 4a1 of the head portion 4a of the bolt 4. Further, the flange portion 42b of the sleeve 42 is bent in such a manner that the shaft portion 44b of the plug 44 can be inserted into the body portion 42a of the sleeve 42.

Fig. 10 (a) is a perspective view showing the upper surface side of the closing member 51 according to the fourth embodiment of the present invention, and Fig. 10 (b) is a perspective view showing the lower surface side. The closing member 51 of this embodiment is formed by joining a cover 52 including a thin flat plate to the head of the plug 24. The structure of the plug 24 and the sleeve 22 is the same as that of the plug 24 and the sleeve 22 of the first embodiment, and the same reference numerals will be given thereto, and the description thereof will be omitted. The cover 52 is formed in a rectangular shape elongated in the longitudinal direction of the rail 1. The cover 52 is provided to cover a plurality of rail mounting holes 5 formed on the upper surface of the rail. A plug 24 and a sleeve 22 are fixed to both end portions of the cover in the longitudinal direction.

As shown in Fig. 11 (a), at one end portion in the longitudinal direction of the rail 1, a pair of concave portions 1d having a circular cross section is formed at a position separated from the rail mounting hole 5. A pair of plugs 24 and a sleeve 22 are inserted into the pair of recesses 1d. A cover mounting groove 1e having a depth equal to the thickness of the cover 52 is formed on the upper surface of the rail 1.

The closing member 51 of this embodiment is attached to the rail 1 as follows. As shown in Fig. 11 (a), the sleeve 22 of the closing member 51 is inserted into the recess 1d of the rail 1 so that the sleeve 22 is placed on the bottom surface of the recess 1d. Then, as shown in Figure 11 (b), if the entry is closed In the member 51, the shaft portion 24b of the plug 24 is inserted into the sleeve 22. If the shaft portion 24b of the plug 24 is inserted into the sleeve 22, the sleeve 22 is expanded in the diameter direction (elastic deformation or plastic deformation). Thereby, the sleeve 22 is fixed in such a manner that the inner surface of the recess 1d is expanded. The cover 52 is attached to the cover mounting groove 1e on the upper surface of the rail 1. The closing member 51 can be self-supported on the bottom surface of the recess 1d of the rail 1 as in the closing member 51 of the embodiment, and the closing member 21 of the first embodiment, the closing member 31 of the second embodiment, and the second embodiment can be used. In the same manner as the closing member 41 of the third embodiment, the closing members 21, 31, and 41 are supported by the head portion 4a of the bolt 4.

Fig. 12 is a view showing a closing member 61 according to a fifth embodiment of the present invention. In the closing member 21 of the first embodiment, the closing member 31 of the second embodiment, and the closing member 41 of the third embodiment, the sleeves 22, 32, 42 as the first members are placed at the head of the bolt 4 The portion 4a or the like, and the plugs 24, 34, 44 as the second members close the rail mounting hole 5, but in the closing member 61 of the fifth embodiment, as shown in Fig. 12(a), The plug 62 of the member is placed on the head 4a of the bolt 4, and the sleeve 64 as the second member closes the rail mounting hole 5. The plug 62 is formed in a disk shape. The sleeve 64 has a disk-shaped head portion 64a and a cylindrical peripheral wall portion 64b provided around the head portion 64a. After the closing member 61 is placed on the head 4a of the bolt 4, if the closing member 61 is driven, the plug 62 is inserted into the sleeve 64. As a result, since the outer diameter of the plug 62 is larger than the inner diameter of the peripheral wall portion 64b of the sleeve 64, as shown in Fig. 12(b), the peripheral wall portion 64b of the sleeve 64 is expanded in the diameter direction, thereby the sleeve 64 is fixed to the inner surface of the rail mounting hole 5, and the like.

According to the closing members 21, 31, 41, 51, and 61 of the present embodiment, the following effects are exhibited.

Since the closing members 21, 31, 41, 51, 61 are themselves self-supporting structures, the driving operation is stabilized, thereby suppressing the closing members 21, 31, 41, 51, 61 from hitting Inadvertently deformed and collapsed.

Since there is no space between the closing members 21, 31, 41, 51, 61 and the head 4a of the bolt 4, etc., the sleeves 22, 32, 42, 64 of the closing members 21, 31, 41, 51, 61 The shape of the inner surface of the drill string hole 5a is fixed, so that the positions of the closed members 21, 31, 41, 51, and 61 that are driven are not easily displaced relative to the external force, and are not easily peeled off. Tilt, and not easy to collapse.

The fixing members 21, 31, 41, 51, 61 are fixed to the drill string hole portion 5a by the expansion in the diameter direction of the sleeves 22, 32, 42, 64 so as not to depend on the closing members 21, 31, 41, 51, The structure of the fitting strength with the rail mounting hole 5 is such that the inner diameter and the surface roughness of the drill string hole portion 5a of the rail mounting hole 5 are not required to be used for mounting the closing members 21, 31, 41, 51, 61. The special size management (for example, reducing the inner diameter of the drill string hole portion 5a and making the surface roughness of the drill string hole portion 5a thick, etc.). Since the accuracy management of the drill string hole portion 5a of the rail mounting hole 5 can be managed by the general tolerance, the management cost can be reduced. Even if the diameter or depth dimension of the drill string hole portion 5a is deviated, the deviation can be absorbed.

Since the closing members 21, 31, 41, 51, 61 are fixed inside the rail mounting hole 5 instead of the upper surface of the rail 1, the generation of the burrs from the closing members 21, 31, 41, 51, 61 is also reduced.

Since the plugs 24, 34, 44, 62 are integrally formed with the sleeves 22, 32, 42, 64, they are easy to manage and can also ensure the plugs 24, 34, 44, 62 and the sleeves 22, 32, 42 , 64 coaxiality.

Since the plugs 24, 34, and 44 are inserted before the upper surfaces of the heads 24a, 34a, and 44a of the plugs 24, 34, and 44 are flush with the surface 1b of the rail 1, the opening margin is further increased. Between the heads 24a, 34a, 44a and the sleeves 22, 32, 42 The gap is removed, so that the upper surfaces of the heads 24a, 34a, 44a of the plugs 24, 34, 44 can be prevented from rising from the surface 1b of the rail 1.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit and scope of the invention.

In the above embodiment, the plug and the sleeve are made of the same resin material, but the plug and the sleeve can be manufactured by two-color molding using different resin materials. It is also possible to use a harder resin material for the plug and to use a softer resin material for the sleeve. Further, the plug and the bushing may be made of a metal material such as brass, aluminum or stainless steel, or a metal material having a different strength.

In the above embodiment, the plug is integrally formed with the sleeve, but the plug and the sleeve may be separated. In this case, in order to easily correct the center of the plug and the sleeve, it is preferable to form the contact surface of the plug and the sleeve into a tapered shape.

The O-ring can also be wound around the head of the plug, and the gap between the plug and the rail mounting hole can be eliminated by the O-ring.

In the above embodiment, the sleeve is fixed to the inner surface of the drill string hole portion of the rail mounting hole, but the concave portion of the drill string hole portion (the second drill string pit portion) may be formed in the rail mounting hole, and the sleeve is carried. The bottom surface of the concave portion (the second drill string hole portion) is placed on the bottom surface of the concave portion (the second drill string pit portion), and the sleeve is fixed to the inner surface of the concave portion (the second drill string pit portion).

In the above embodiment, the fitting of the plug head and the drill string hole portion of the rail mounting hole is matched by a clearance, but an interference fit can also be used. In this case, the two portions of the plug and the sleeve are fixed to the rail mounting hole, so that the position to be driven is less likely to be displaced with respect to the external force.

The above embodiment describes an example of a rolling type motion guiding device which is formed by interposing a rolling element between a track and a moving block, but the present invention can also be applied to the track and A sliding type motion guiding device that does not interpose a rolling body between moving blocks.

1b‧‧‧ surface

4‧‧‧Bolts (fastening members)

4a‧‧‧Bolt head

4b‧‧‧ screw section

5‧‧‧Track mounting holes (track member mounting holes)

5a‧‧‧Drilling pit

5b‧‧‧Bolt insertion hole

21‧‧‧Closed components

22‧‧‧ casing (first component)

24‧‧‧ Plug (second component)

24a1‧‧‧ plug surface

24b‧‧‧Axis of the plug

25‧‧‧Awnings

26‧‧‧Plastic hammer

L2‧‧‧ length

2‧‧‧Inner diameter

Δ1‧‧‧ gap

Δ2‧‧‧ gap

Claims (3)

A guide member for a rail member mounting hole of a motion guiding device, which is a motion guiding device used to movably assemble a moving member to a rail member, and is used for mounting the rail member to a base The rail member mounting hole is closed, and includes a first member placed on a head portion of the fastening member disposed on the rail member mounting hole, a hole in a head portion of the fastening member, or formed on the rail a bottom surface of the concave portion of the member; and a second member that closes the rail member mounting hole; and inserts one of the first member and the second member into the other, whereby the first member and the first member The other of the two members is expanded in the diameter direction, and the other of the first member and the second member is fixed to the inner surface of the rail member mounting hole and the hole of the head of the fastening member. The inner surface or the inner surface of the concave portion of the rail member, the first member and the second member are integrally formed, and the rail member is mounted Them into the blocking member, and said first member and said second member to produce separation. A guide member for a rail member mounting hole of a motion guiding device, which is a motion guiding device used to movably assemble a moving member to a rail member, and is used for mounting the rail member to a base The rail member mounting hole is closed, and includes a first member placed on a head portion of the fastening member disposed on the rail member mounting hole, a hole in a head portion of the fastening member, or formed on the rail The bottom surface of the recess of the member; and a second member that closes the rail member mounting hole; and inserts one of the first member and the second member into the other, whereby the other of the first member and the second member Expansion occurs in the diameter direction, and the other of the first member and the second member is fixed to the inner surface of the rail member mounting hole, the inner surface of the hole of the head portion of the fastening member, or the rail member The inner surface of the concave portion is a sleeve, and the second member is a plug having a head portion and a shaft portion, and the head portion is closed by the rail member mounting hole. Inserted into the sleeve and having a diameter smaller than the head portion, and when the plug is inserted into the sleeve until the upper surface of the head of the plug is flush with the surface of the rail member A gap is formed between the head and the sleeve in a manner further having a margin of penetration. A motion guiding device comprising: a rail member; a moving member movably assembled to the rail member; and a closing member for a rail member mounting hole according to claim 1 or 2.