JPH0953639A - Inner seal member for direct acting guide bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner seal member wherein a seal function can be well maintained over a long period and a seal lip containing a lubricant can be easily surely mounted without worsening lubricating performance. SOLUTION: Seal lips L1 , L2 containing a lubricant are fitted to a slit 43 of bending parts 42a, 42b of a core material 41, and it is fixed to an internal surface side of a slider 2, and an upper/lower side surface of a recessed groove formed in both side parts of the seal lips L1 , L2 is brought into contact with the core material 41 to regulate movement in its vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an inner seal member provided in a slider of a linear motion guide bearing device.

[0002]

2. Description of the Related Art Generally, a linear motion guide bearing device is provided with a guide rail 1 extending in the axial direction as shown in FIG. 22, and a slider 2 movably supported on the guide rail 1. A ball rolling groove 3 extending in the axial direction is formed on both side surfaces of the guide rail 1, and the slider body 2A of the slider 2 has a ball rolling groove 3 facing the ball rolling groove 3 on the inner side surfaces of both sleeve portions 4 thereof. Moving grooves (not shown) are formed respectively.

A large number of balls are rotatably loaded between the ball rolling grooves facing each other, and the slider 2 moves axially on the guide rail 1 through the rolling of the balls. Can be moved. With this movement, the ball interposed between the guide rail 1 and the slider 2 rolls and moves to the end of the slider body 2A of the slider 2. In order to continuously move the slider 2 in the axial direction, it is necessary to circulate these balls.

Therefore, a through hole (not shown) as a ball passage further penetrating in the axial direction is further formed in the sleeve portion 4 of the slider body 2A, and end caps 5 are provided at both front and rear ends of the slider body 2A. A ball circulation path is formed by forming a U-shaped curved ball circulation path that connects the both ball rolling grooves and the through hole as a ball passage.

In the figure, reference numeral 6 is a recess formed on the upper surface of the guide rail 1 over the entire length of the rail, and 6A is a bolt insertion hole for bolting the guide rail 1 onto a base (not shown). is there. A large number of the bolt insertion holes 6A are provided at predetermined intervals in the axial direction of the guide rail 1. 6B is an outer edge on both sides of the opening of the bolt insertion hole 6A, and is a guide rail 1
Is a plane portion extending in the axial direction on the upper surface of the.

In the guide rail 1, dust, dust and the like (hereinafter referred to as foreign matter) are accumulated in the ball rolling groove 3 and the groove 6 in the portion where the slider 2 slides so that the ball can roll smoothly. It is customary to attach a dustproof seal 10 to the end cap 5 to prevent it. As the conventional dustproof seal 10, for example, the one shown in FIG. 23 is known. This is a metal plate 7 that is attached to the end face of the end cap 5 with the back surface side and screwed with a machine screw 11.
And a rubber body 8 adhered to the entire surface on the front side thereof, and a passage opening 9 for the guide rail 1 is provided in the central portion to form a generally U-shape. The inner edge of the passage opening 9 formed in the metal plate 7 is simply linear, while the inner edge of the passage opening 9 formed in the rubber body 8 adhered thereto has a ball rolling of the guide rail 1. A semi-circular seal projection 8a corresponding to the groove 3 and a trapezoidal seal projection 8c corresponding to the recess 6 are provided in a protruding manner.

A tapered lip portion is formed on the inner edge of the passage opening 9 of the rubber body 8 including the seal projections 8a and 8c, and the lip portion forms the ball rolling groove 3 of the guide rail 1.
Also, foreign matter is scraped off while slidingly contacting the outer surface of the guide rail 1 including the recessed line 6 to prevent dust inside the slider 2. In FIG. 22, reference numeral 13 is a nipple that supplies lubricating oil to the ball circulation path.

However, in the dust-proof seal for such a linear motion guide bearing device, foreign matter accumulated in the recess of the bolt insertion hole 6A opening on the upper surface of the guide rail 1 is completely removed by the trapezoidal seal projection 8c. Therefore, there is a disadvantage that foreign matter that has passed through the seal projection 8c is scattered inside the slider 2 and easily enters the ball circulation path, impairing the dustproof function.

Therefore, Jikken 6-2026 and Jikken 6
As disclosed in Japanese Unexamined Patent Publication No. 20896, an inner seal member of a linear motion guide bearing device, which is configured so as to prevent foreign matter accumulated in the bolt insertion hole 6A on the upper surface of the guide rail 1 from entering the ball circulation path, was previously proposed by the present applicant. Has been done. Although not shown, the inner seal member is provided on the inner surface of the slider body facing the two flat surface portions formed on the upper surfaces of both sides of the opening of the bolt insertion hole of the guide rail in the axial direction. Is provided with a seal lip that extends in the axial direction and is fixed over the entire length of the ball row, so that foreign matter adhering to the bolt insertion hole portion on the upper surface of the guide rail will pass through the above-mentioned seal projection 8c and the inside of the slider. Even if it scatters, the seal lip prevents foreign matter from entering the ball circulation path.

[0010]

However, in the inner seal member of such a linear motion guide bearing device, since the seal lip is made of a rubber material or a synthetic resin material, if the oil film of the seal lip is cut off, the inner lip and the guide rail will be damaged. Since the seal lip is abraded or broken due to friction, the sealing function is lost in a short period of time.

Therefore, the inventors of the present invention can solve the above-mentioned inconvenience by always using a lubricant-containing rubber material or synthetic resin material as a seal lip material to form an oil film on the seal lip. I found out. However, as a result of further diligent studies by the present inventors based on such knowledge, when a rubber material or a synthetic resin material containing a lubricant is used as the seal lip, a new problem that has not been a problem with the conventional inner seal member is presented. Occurred.

That is, in the conventional inner seal member, the seal lip of the rubber material or the synthetic resin material is fixed to the inner surface of the slider body directly or through the core material by adhesion (or welding) or bolt (or pin) fixing. There is. But,
A seal lip containing a lubricant is difficult to bond due to the oil contained therein, and even if it can be bonded, it easily peels off and is difficult to commercialize.

When the bolts and pins are strongly fixed, the fixing pressure not only squeezes the oil out of the seal lip but also deforms the seal lip. On the contrary, when the bolt is weakly fixed, the seal lip shifts because it contains oil. There is an inconvenience that it will end up. The present invention has been made in view of such a technical background, and it is of course possible to maintain a good sealing function for a long period of time, and a sealing lip containing a lubricant can be easily used without impairing lubricating performance. It is also an object of the present invention to provide an inner seal member for a linear motion guide bearing device that can be reliably attached.

[0014]

In order to achieve such an object, an inner seal member of a linear motion guide bearing device according to a first aspect of the present invention has a bolt insertion hole for fixing to a base and both sides thereof. A guide rail that has a rolling element rolling groove that extends in the axial direction and that extends in the axial direction, and a rolling element rolling groove that opposes the rolling element rolling groove of the guide rail, and these rolling element rolling grooves are provided. Provided along with a linear guide bearing device having a slider supported by the guide rail so as to be movable along the axial direction through rolling of a large number of rolling elements inserted between the moving grooves, An inner seal member having a seal lip extending in the axial direction on the inner surface of the slider, which faces the flat portions on both sides of the opening of the bolt insertion hole on the upper surface of the guide rail, the seal lip being at least the seal lip. The lubricant containing Formed of a rubber or synthetic resin, the seal lip is fitted to a core member to fix the core member inside the slider, and the movement of the seal lip fitted to the core member in contact with the seal lip is prevented. It is characterized in that it has an abutting portion that regulates.

In the inner seal member of the linear guide bearing device according to a second aspect of the present invention, in the core member, the rolling member rolls in a rolling element rolling groove formed on a ridge between the upper surface and the side surface of the guide rail. It has a rolling element holding part which holds a moving body.

[0016]

According to the first aspect of the present invention, the inner seal member provided inside the slider prevents foreign matter from penetrating the side seals and entering the bolt insertion holes on the upper surface of the guide rail from entering the rolling element circulation path. Then, by using a seal lip containing a lubricant, an oil film is constantly generated on the seal lip to prevent abnormal wear and tear due to friction with the guide rail, thereby improving the seal life and thus the life of the linear guide bearing device. Improve.

Further, the lubricant-containing seal lip is fitted to the core material to fix the core material inside the slider, and the movement of the seal lip fitted to the core material is regulated by the abutment portion, whereby lubrication is achieved. The seal lip containing the agent can be easily and securely attached without impairing the lubrication performance. According to a second aspect of the invention, in addition to the first aspect of the invention, the core member holds a rolling element that rolls in a rolling element rolling groove formed on a ridge portion between the upper surface and the side surface of the guide rail. By providing the moving body holding portion, the rolling body is prevented from falling off when the slider is pulled out from the guide rail.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is an exploded perspective view of a linear motion guide bearing device including an inner seal member, which is an example of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line − in FIG. 1, FIG. 3 is a partially enlarged view of FIG. FIG. 4 is an explanatory perspective view for explaining a method of assembling the inner seal member to the slider body, and FIG. 5 is an explanatory perspective view for explaining a method of assembling the seal lip to the core material. In the drawings, the same or corresponding parts as those of the conventional one are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 1, reference numeral 20 is a slider body 2
It is a side seal member screwed to the end faces of the end caps 5 attached to both ends of A with machine screws 11. The side seal members 20 are provided on both side surfaces of the guide rail 1
Ball rolling groove (rolling element rolling groove) formed by strips 3
A seal projection 8a that slidably contacts A and 3B to wipe foreign matter;
A seal projection 8c for slidingly contacting the upper surface of the guide rail 1 in which a large number of bolt insertion holes 6A are opened to wipe off foreign matter is provided. Lip portions that are inclined with respect to the sliding contact surface are formed at the extreme ends of these seal projections 8a and 8c, and these lip portions include the upper surface of the guide rail 1 and the outer surface of the guide rail 1 including the ball rolling grooves 3A and 3B. The inside of the slider 2 is protected from dust by scraping off foreign matter while sliding on it. In this embodiment, the guide rail 1 has no upper surface provided with the concave groove 6 as in the prior art.

Referring now to FIG. 2, balls (rolling elements)
The circulation path of B is the same as the conventional one, and the ball rolling grooves 3A, 3B of the guide rail 1 and the slider body 2A facing the ball rolling grooves 3A, 3B.
Ball rolling groove (rolling element rolling groove) 3 formed on the inner surface of
0A, 30B and these ball rolling grooves 3A, 3B, 3
Through holes 31A formed in the thick portion of the sleeve portion 4 of the slider body 2A as a ball passage parallel to 0A and 30B,
31B and these ball rolling grooves 3A, 3B, 30A,
30B and the ball passages 31A, 31B are formed by a U-shaped curved ball circulation passage (not shown) formed in the end cap 5. Further, in the figure, reference numeral 3a is an escape groove for the cage W formed at the groove bottom of the ball rolling groove 3B of the guide rail 1, and 15 is an under seal.

Next, the inner seal member 40, which is an example of the embodiment of the present invention, will be described. The inner seal member 40 is attached to the inner surface side of the slider body 2A in parallel with the row of balls, and seals between the row of balls and the flat surface portions 6B on both sides of the upper surface of the guide rail 1, and is made of metal or non-ferrous metal. Alternatively, a core material 41 made of a synthetic resin material or the like is provided.

The core member 41 is formed in a plate shape having a length substantially equal to the length from the outer surface of the end cap 5 at the front end portion of the slider 2 to the outer surface of the end cap 5 at the rear end portion, and both side portions are on the lower side. The bent portion 42 is bent so as to be rolled inward.
a and 42b, and the dimension in the width direction thereof is substantially the same as the width of the guide rail 1. In the bent portions 42a and 42b,
As shown in FIG. 5, a slit 43 extending along the axial direction of the guide rail 1 is formed, and both side surfaces on the front end side of the slit 43 facing each other are cut out in an arc shape to form a seal lip L described later. The mounting holes 44 for ₁ and L ₂ .

Further, in the R portions of the bent portions 42a and 42b,
As shown in FIG. 2, a curved surface-shaped concave portion (rolling element holding portion) 4 for holding the ball B loaded between the ball rolling grooves 3A and 30A so as not to drop when the slider 2 is pulled out.
5 is formed so that the core material 41 serves as a ball retainer. As shown in FIGS. 4 and 5, at the front and rear end portions of the core member 41, fixing portions 46 fixed to the surface 5a of the front and rear end caps 5 facing the upper surface of the guide rail 1 are formed. When fixing the fixing portion 46 to the surface 5a of the end cap 5, a known fixing means other than adhesion or bolting can be adopted. Slits 43 formed in the bent portions 42a and 42b of the core material 41
Seal lips L ₁ and L ₂ are fitted to the respective seal lips.

Since the seal lips L ₁ and L ₂ have the same structure, only the seal lip L ₂ will be described. The seal lip L ₂ is formed of a lubricant-containing rubber material or synthetic resin material in a rod shape. The length is substantially the same as the length of the core material 41 in the longitudinal direction. On both sides of the seal lip L _2, as shown in FIG. 3, grooves 47a, 47b are formed along the longitudinal direction. Groove 47a, 47b
The dimension between the bottom surfaces of the is substantially the same as the width of the slit 43,
The dimension between the upper and lower side surfaces 48a, 48b of the concave grooves 47a, 47b is substantially the same as the thickness of the core material 41. Groove 47a,
The width of the flange portion 49 on the upper side of 47b is smaller than the hole diameter of the mounting hole 44 described above.
The lower side of 7b is formed as a lip portion 50 which is curved inward in the width direction of the core material 41 and whose tip end portion is in sliding contact with the flat surface portion 6B of the upper surface of the guide rail 1. The longitudinal end portions of the concave grooves 47a and 47b are located inward in the longitudinal direction with respect to the end portions of the flange portion 49 and the lip portion 50.

FIG. 5 shows an example of a method of fitting the seal lips L ₁ and L ₂ into the slits 43 of the bent portions 42a and 42b of the core 41. In this case as well, since the fitting methods of the seal lips L ₁ and L ₂ are the same, only the seal lip L ₂ will be described. In FIG. 5, the flange portion 49 on the right end side of the seal lip L ₂ is attached to the mounting hole. 44
The core material 41 into the groove 43 on both sides of the slit 43.
Insert a and 47b, and in this state, slide the seal lip L ₂ to the right end side of the slit 43.

After that, when the flange portion 49 at the left end portion of the seal lip L ₂ is inserted into the mounting hole 44, the seal lip L ₂ is slid to the left end side so that the seal lip L ₂ is slit at the bent portion 42b. 43 is fitted. In the fitted state, as shown in FIG. 3, the groove 47a of the seal lip L _2, 47b of the upper and lower sides 48
The a and 48b are in contact with the core material (contact portion) 41, and the vertical movement thereof is restricted.

Then, in the same manner, the inner seal member 40 is constructed by fitting the seal lip L ₁ into the slit 43 of the bent portion 42a.
The inner seal member 40 is assembled in the slider 2 by fixing the fixed portions 46 at the front and rear ends to the surface 5a of the front and rear end caps 5 that faces the upper surface of the guide rail 1. In the assembled state, the seal lips L ₁ and L ₂ of the inner seal member 40 are provided on the upper surface of the guide rail 1 on both sides of the opening of the bolt insertion hole 6A.
The slider main body 2A is arranged over the entire length of the ball row corresponding to the two flat surface portions 6B formed by extending in the axial direction.

In the inner seal member 40 having such a structure, the inner seal member 40 provided inside the slider 2 is a foreign substance that has penetrated through the seal projection 8c of the side seal 20 and entered the bolt insertion hole 6A on the upper surface of the guide rail 1.
Of the ball rolling grooves 3A, by the seal lips L ₁ , L ₂ of
It is possible to prevent 3B, 30A, 30B and further the ball circulation path from entering.

Further, because of the use of seal lip L _1, L ₂ containing a lubricant, the sealing lip L _1, L ₂
It is possible to constantly generate an oil film on the inner surface of the guide rail 1 to prevent abnormal wear and tearing due to friction with the upper surface of the guide rail 1. As a result, the sealing function can be favorably maintained for a long time, and the life of the linear guide bearing device can be improved. Can be greatly improved.

Further, a seal lip L containing a lubricant₁, L
₂The core member 41 into the slider 2 by fitting the core member 41 into the slider 2.
Seal lip fitted to the core material 41
L₁, L ₂Movement by contacting the core material 41 with the core material 41
Is regulated, the seal lip containing lubricant
L₁, L₂Easy and reliable without impairing lubrication performance
Can be attached.

Further, since the rod-shaped seal lips L ₁ and L ₂ are fitted and attached to the slits 43 of the core material 41, the seal lips L ₁ and L ₂ can be easily replaced, and the slider 2 Even if the length of the slider changes, it is possible to easily cut out from the long shaped seal lip by the amount corresponding to the length of the slider 2, so there is no need to manufacture various types of molds, and cost reduction can be achieved. You can

In the above embodiment, the side seal 2
Although the foreign matter on the upper surface of the guide rail 1 is wiped by the seal projection 8c of 0, it is not always necessary to do so, and the foreign matter adhering to the upper surface of the guide rail 1 can be directly attached to the slider 2 without providing the seal projection 8c. The inner seal member 40 may prevent the foreign matter from entering the ball circulation path by passing the foreign matter inside.

Next, various modifications of the inner seal member 40 will be described with reference to FIGS. The inner seal member 40 shown in FIGS. 6 and 7 has seal lips L ₁ , L.
_{The second} cross section of the lip section 50 is modified, and the cross section of the lip section 50 shown in FIG. 6 is formed in an isosceles triangular shape so that its apex is in sliding contact with the flat section 6B. On the other hand, the lip portion 50 shown in FIG. 7 has a triangular cross-sectional shape, and the apex of the lip portion 50 slidingly contacting the flat surface portion 6B is arranged at the innermost side in the width direction of the core material 41.

Inner seal member 4 shown in FIGS. 8 and 9.
0, the seal lip L _1, L ₂ in the concave groove 47a, is of the type which does not form 47b, comprises a sealing lip L _3, L ₄ the lip portion 50 from the flange portion 49 is suspended directly. In the seal lips L ₃ and L ₄ of the inner seal member 40 shown in FIG. 8, the base portion of the lip portion 50 is fitted into the slits 43 of the bent portions 42a and 42b of the core material 41, and the most distal end portion thereof is the width direction inner side of the core material 41. It is curved so as to be in sliding contact with the flat surface portion 6B of the upper surface of the guide rail 1. on the other hand,
In the seal lips L ₃ and L ₄ of the inner seal member 40 shown in FIG. 9, the base of the lip portion 50 is the bent portion 4 of the core material 41.
The slits 43 of 2a and 42b are fitted to each other, and the most distal end portion thereof is divided into two parts, and the divided parts are respectively curvedly formed inside and outside in the width direction of the core material 41. As a result, the area of sliding contact with the flat surface portion 6B of the upper surface of the guide rail 1 is increased to improve the sealing function.

Inner seal member 4 shown in FIGS. 8 and 9.
The seal lips L ₃ and L ₄ of 0 are the slits 4 of the core material 41.
Both of the upper and lower surfaces of the flange portion 49 abut on the core material (abutting portion) 41 when they are fitted to each other so that the vertical movement thereof is restricted. An example of a method of fitting the seal lips L ₃ and L ₄ of the inner seal member 40 shown in FIG. 8 into the slits 43 of the core material 41 will be described with reference to FIG. 10. The seal lips L ₃ and L ₄ are The leading end of the lip portion 50 is inserted into the slit 43 from the back side of the bent portions 42a and 42b of the core material 41 so as to be fitted into the slit 43. In this case, the mounting hole 44 described above becomes unnecessary.

The inner seal member 40 shown in FIG.
Bent portions 42a and 42b are formed by bending both sides of the core material 41 so as to be wound inward.
The space between the upper surface of the guide rail 1 and the lower surface of the core material 41, that is, the space for accumulating foreign matter becomes smaller, but on the contrary, the space T between the upper surface of the core material 41 and the inner surface of the slider 2 becomes larger, so that space is increased. It is possible to store the lubricant in T and supply the lubricant to the seal lips L ₁ and L ₂ as shown by the arrow and also to the ball rolling portion.

In the inner seal member 40 shown in FIGS. 12 and 13, both sides of the core member 41 are bent at a right angle so that the balls B loaded between the ball rolling grooves 3A and 30A are held in line contact. The seal lips L ₁ and L ₂ of the inner seal member 40 shown in FIG.
The upper and lower side surfaces 48a and 48b (see FIG. 3) of a and 47b abut on the core material (abutting portion) 41, and the upper surface of the flange portion 49 abuts on the inner surface (abutting portion) of the slider 2 in the vertical direction. Movement is restricted.

The inner seal member 40 shown in FIGS. 14 to 21 is of a type that can be assembled in a linear motion guide bearing device having a cage W at the bottom of the ball rolling groove 3A of the guide rail 1. In the inner seal member 40 shown in FIGS. 14 and 15, the curved concave portion 45 for holding the ball B as in the above embodiment is not formed in the bent portions 42a and 42b of the core material 41. In addition, as shown in FIG. 15, a surface 5 that faces the upper surface of the guide rail 1 of the front and rear end caps 5.
A concave portion 51 corresponding to the shape of the fixed portion 46 at the front and rear ends of the core material 41 is formed in a, and the core material 41 is fixed in the slider 2 by fitting the fixed portion 46 of the core material into the concave portion 51. It

The inner seal member 40 shown in FIGS. 16 and 17 does not have the fixing portions 46 at the front and rear ends of the core member 41.
The core material 41 is fixed to the slider body 2A with bolts 52, rivets or the like. The inner seal member 40 shown in FIGS. 18 and 19 has bent portions 4 on both sides of the core member 41.
It is formed in a single plate shape without providing 2a and 42b, which simplifies the structure of the core material 41 and reduces the cost. In this case, the seal lips L ₃ , L
_In No. ₄ , the lower surface of the flange portion 49 abuts on the core material 41, and the upper surface abuts on the inner surface of the slider 2 so that its vertical movement is restricted.

The inner seal member 40 shown in FIGS. 20 and 21 is _{one in which} the flange portions 49 of the seal lips L ₃ and L ₄ (or seal lips L ₁ and L ₂ ) are connected and integrated. The seal lips L ₃ and L ₄ are attached to the core 41 by fitting between the lip portions 50 of the seal lips L ₃ and L ₄ integrated with the core 41. As a result, it is not necessary to form the slit 43 in the core material 41, and the structure of the core material 41 can be further simplified.

In the above embodiment, balls are used as the rolling elements by way of example, but it is needless to say that rollers such as cylindrical rollers and tapered rollers may be used instead of balls.

[0042]

As is apparent from the above description, according to the first aspect of the invention, the foreign matter that has penetrated through the side seal and entered the bolt insertion hole portion on the upper surface of the guide rail is sealed by the inner seal member provided inside the slider. Since the lip can prevent the rolling element rolling groove and hence the rolling element circulation path from entering, the sealing function can be significantly improved.

Further, since the seal lip containing the lubricant is used, it is possible to constantly form an oil film on the seal lip to prevent abnormal wear and tear due to friction with the upper surface of the guide rail. It is possible to obtain the effect that the function can be favorably maintained for a long period of time and the life of the linear motion guide bearing device can be significantly improved.

Further, a seal lip containing a lubricant is fitted to the core material to fix the core material inside the slider, and the seal lip fitted to the core material is brought into contact with the abutment portion to move the movement. Since the restriction is applied, the effect that the seal lip containing the lubricant can be easily and surely attached without impairing the lubrication performance is obtained.

Further, since the seal lip is fitted into the core member and attached, the seal lip can be easily replaced, and even if the length of the slider changes, the seal lip formed from a long shape can be changed to a slider. Since it can be easily cut out by an amount corresponding to the length, it is not necessary to manufacture various types of molds, and an effect that cost can be reduced can be obtained.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the core member has a rolling element rolling in a rolling element rolling groove formed on a ridge portion between the upper surface and the side surface of the guide rail. By having the rolling element holding portion that holds the rolling element, it is possible to prevent the rolling element from falling off when the slider is pulled out from the guide rail.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a linear guide bearing device including an inner seal member, which is an example of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line − in FIG.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is an explanatory perspective view for explaining a method of assembling the inner seal member to the slider body.

FIG. 5 is an explanatory perspective view for explaining a method of assembling the seal lip to the core material.

FIG. 6 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 7 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 8 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 9 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

10 is an explanatory perspective view for explaining a method of assembling the seal lip of the inner seal member shown in FIG. 8 to the core material.

FIG. 11 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 12 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 13 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 14 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

15 is an explanatory perspective view for explaining a method of assembling the inner seal member shown in FIG. 14 to the slider body.

FIG. 16 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

FIG. 17 is an explanatory perspective view for explaining a method of assembling the inner seal member shown in FIG. 16 to the slider body.

FIG. 18 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

19 is an explanatory perspective view for explaining a method of assembling the inner seal member shown in FIG. 18 to the slider body.

FIG. 20 is an explanatory cross-sectional view for explaining a modified example of the inner seal member.

21 is an explanatory perspective view for explaining a method of assembling the inner seal member shown in FIG. 20 to the slider body.

FIG. 22 is an explanatory perspective view for explaining a conventional example.

FIG. 23 is an overall perspective view of a side seal.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Guide rail 2 ... Slider 3A, 3B, 30A, 30B ... Ball rolling groove (rolling element rolling groove) 6A ... Bolt insertion hole 6B ... Plane part 40 ... Inner seal member 41 ... Core material (contact part) 45 ... recesses (rolling element holding portion) 47a, 47b ... recessed groove 48a, 48b ... vertical side B ... ball (rolling elements) of the groove L _1, L ₂ ... seal lip

Claims (2)

[Claims] 1. A guide rail which has a bolt insertion hole for fixing to a base and has rolling element rolling grooves extending in the axial direction on both sides, and which is extended in the axial direction, and the guide rail, The guide rail has rolling element rolling grooves facing the rolling element rolling grooves, and is movable along the axial direction through rolling of a large number of rolling elements inserted between the rolling element rolling grooves. Is provided in association with a linear motion guide bearing device having a slider supported on the inner surface of the slider, the inner surface of the slider facing the flat surfaces on both sides of the opening of the bolt insertion hole on the upper surface of the guide rail in the axial direction. An inner seal member having a seal lip arranged to extend in the direction of at least, the seal lip being formed of rubber or synthetic resin containing a lubricant, the seal lip being fitted to a core member, and the core member being attached to the slider. When fixed inside the , Inner seal member of the linear guide bearing apparatus comprising the abutment portion for restricting the movement of the seal lip is fitted on the core in contact with the seal lip. 2. The core member has a rolling element holding portion that holds a rolling element that rolls in a rolling element rolling groove formed on a ridge portion between an upper surface and a side surface of the guide rail. The inner seal member of the linear motion guide bearing device according to claim 1.