JP4116038B2 - Linear motion guide bearing device - Google Patents

Description

  The present invention relates to a linear motion guide bearing device, and in particular, can stably supply a lubricant to rolling elements over a long period of time.

As this type of conventional technology, there are those disclosed in Patent Document 1 previously proposed by the present applicant, and those disclosed in Patent Document 2 previously proposed by the present applicant.
That is, in Patent Document 1, a seal device having a seal lip portion formed of a lubricant-containing rubber or synthetic resin between a guide rail outer surface and a slider inner surface that moves along the guide rail is provided. The seal lip is in contact with the outer surface of the guide rail to seal the opening between the slider inner surface and the guide rail outer surface. Since the seal lip portion of the seal device is formed from a rubber or synthetic resin containing a lubricant and the seal lip portion has a self-lubricating property, the lubricant contained in the seal itself gradually oozes. It is possible to obtain an operational effect that the seal lip portion is automatically supplied to the seal friction surface and wear of the seal lip portion is suppressed.

In Patent Document 2, a rubber or synthetic resin layer and a lubricant-containing rubber or synthetic resin layer are at least partially overlapped and integrally joined, and the two types of layers are combined. Of these, at least a lubricant-containing rubber or synthetic resin layer is formed with a seal lip portion that contacts the outer surface of the guide rail and seals the opening between the slider inner surface and the guide rail outer surface. And even in this Patent Document 2, since the seal lip portion has self-lubricating properties, the lubricant contained in the seal itself oozes out and is automatically supplied to the seal friction surface, The effect that wear of the seal lip portion is suppressed is obtained. Moreover, since the structure is formed by laminating the layers as described above, there is also an advantage that the strength of the seal lip portion can be freely set according to the application and the like by appropriately selecting the number and thickness of the layers.
JP-A-6-346919 JP-A-7-35146

  Certainly, with the configuration described in Patent Document 1 and Patent Document 2, since the seal lip portion has self-lubricating properties, the effect of suppressing wear of the seal lip portion as described above is Although only lubricant that exudes from lubricant-containing rubber or synthetic resin can be obtained, the rolling elements such as balls and rollers that guide the movement of the slider of the linear motion guide bearing device, particularly when durability is required, are smooth. There was an unresolved problem that it was insufficient to maintain even the rolling motion.

Further, in the sealing device containing the lubricant described in Patent Document 1 and Patent Document 2, the seal lip portion is pressed against the guide rail only by the elastic force of the seal itself. However, there are cases where a sufficient pressing force cannot be obtained as a device for supplying a lubricant.
The present invention has been made paying attention to such an unsolved problem of the conventional technology, and constantly supplies a lubricant capable of maintaining a smooth rolling motion of the rolling elements. It is an object of the present invention to provide a linear motion guide bearing device capable of achieving the above.

In order to achieve the above object, according to a first aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; in the linear guide bearing apparatus number of rolling elements is relatively moved is loaded with the slider along the guide rail, the lubricant of the U-shaped containing straddling and the guide rail Ri Do from the lubricant-containing rubber or synthetic resin The member itself is sandwiched between the end face of the slider and the plate-like member at the end of the slider without adhering to another member , and at least a part of the lubricant-containing member is in contact with the guide rail. It is attached in the state Ri, inner surface of the U-shaped of the lubricant-containing member, which in accordance with the sectional shape of the guide rails and the slidable contact shape on the outer surface including the upper surface and the rolling element rolling grooves of the guide rail It is.
The invention according to claim 2 is the linear motion guide bearing device according to the invention according to claim 1, wherein the rolling rail rolling groove of the guide rail among the U-shaped inner surfaces of the lubricant-containing member is provided. The convex part is formed in the part which opposes to so that it may slidably contact to the inner surface of the rolling-element rolling groove.
In order to achieve the above object, according to a third aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail Without adhering itself to other members, the end of the slider is sandwiched between the end face of the slider and the plate-like member, and at least a part of the lubricant-containing member is in contact with the guide rail Install with Ri, the connecting portion for connecting the two sleeves of U-shaped of the lubricant-containing member through hole is formed, the through hole is one that is open to the upper surface of the connecting portion.
In order to achieve the above object, according to a fourth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and the U-shaped sleeves of the lubricant-containing member Has through holes , Each of which through-holes in which are fitted a ring-shaped member.

In order to achieve the above object, according to a fifth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and the U-shaped sleeves of the lubricant-containing member To the connecting part Through hole is formed, the through hole in which is fitted a ring-shaped member.
According to a sixth aspect of the present invention, in the linear motion guide bearing device according to the fifth aspect of the present invention, an outer diameter of the ring-shaped member is larger than an inner diameter of the through hole.
According to a seventh aspect of the present invention, in the linear motion guide bearing device according to the fifth and sixth aspects of the present invention, the length of the ring-shaped member is longer than the thickness of the lubricant-containing member. is there.
According to an eighth aspect of the present invention, in the linear motion guide bearing device according to the fifth and sixth aspects of the present invention, the length of the ring-shaped member is equal to or smaller than the thickness of the lubricant-containing member. It is what has become.

In order to achieve the above object, according to a ninth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without being bonded to other members, and the lubricant-containing member and the plate-like member are Through the front By a mounting screw to be screwed to the slider is assumed to be fixed to the slider.
In order to achieve the above object, according to a tenth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and between the end face of the slider and the lubricant-containing member. In between The Jo members are sandwiched, the plate-like member is a side seal, the other plate-like member is intended a reinforcing plate made of steel plate.
In order to achieve the above object, according to an eleventh aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements that move the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and the U-shaped sleeves of the lubricant-containing member Has a mounting screw A through-hole is formed, and a notch is formed so as to be continuous with each of the through-holes and open on the outer surface side and the distal end side of each sleeve, and a ring-shaped member is fitted into the through-hole. The inner diameter of the ring-shaped member is made larger than the outer diameter of the threaded portion of the mounting screw.
In order to achieve the above object, according to a twelfth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements that move the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without being bonded to other members, and the lubricant-containing member on the plate-like member side is attached. Lubrication on the surface A concave groove that is continuous in a U-shape is formed so as to surround the U-shaped concave portion of the containing member, and an elastic body that generates a biasing force that presses the lubricant-containing member against the guide rail is fitted in the concave groove. Is.
According to a thirteenth aspect of the present invention, in the linear motion guide bearing device according to the twelfth aspect of the present invention, the tip of the elastic body is brought to the vicinity of the tip of the sleeve.
According to a fourteenth aspect of the present invention, in the linear guide bearing device according to the twelfth and thirteenth aspects of the present invention, the upper part of the connecting portion that connects the U-shaped sleeves of the lubricant-containing member opens upward. A rectangular notch is formed.

In order to achieve the above object, according to a fifteenth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and the U-shaped sleeves of the lubricant-containing member Outside surface and its An outer peripheral groove that is continuous with the upper surface of the connecting portion that connects the sleeve portions is formed on the outer peripheral surface of the lubricant-containing member, and an elastic force that generates a biasing force that presses the lubricant-containing member against the guide rail in the outer peripheral groove. The body is fitted.
According to a sixteenth aspect of the present invention, in the linear guide bearing device according to the fifteenth aspect of the present invention, recesses that enter the inside of the sleeve portion are formed at both ends of the outer peripheral groove.
In order to achieve the above-mentioned object, according to a seventeenth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on an outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and the U-shaped sleeves of the lubricant-containing member Connecting part to connect To form a groove extending in the width direction of the lubricant-containing member, its groove, in which is fitted an elastic member that generates a biasing force that presses the lubricant-containing member to the guide rail.
In order to achieve the above object, according to an eighteenth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements that move the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without adhering to other members, and the U-shaped sleeves of the lubricant-containing member Connecting part to connect In addition, a long rectangular through hole is formed in the left and right direction of the lubricant-containing member, and a notch communicating with the through hole is formed on the upper side of the connecting portion. The coil spring is accommodated in the direction and compressed.
In order to achieve the above object, according to a nineteenth aspect of the present invention, a slider is loosely fitted to a guide rail that has a rolling element rolling groove on its outer surface and extends in the axial direction, and the slider is configured to roll on the rolling element of the guide rail. A rolling element circulation path comprising a rolling element rolling groove opposed to the rolling groove and a rolling element return path connected to both ends of the load rolling element rolling groove via a curved path; In a linear motion guide bearing device loaded with a number of rolling elements for moving the slider relative to each other along the guide rail, a U-shaped lubricant-containing member made of lubricant-containing rubber or synthetic resin and straddling the guide rail It is attached to the end of the slider in a state of being sandwiched between the end face of the slider and the plate-like member without being bonded to other members, and inside the U-shaped sleeves of the lubricant-containing member. Up and down In addition to forming a slit that opens to the front end side of each sleeve, a rectangular through hole that is long in the left-right direction is formed in the middle of the slit, and the expansion and contraction direction is directed in the left-right direction and compressed in the through-hole. The coil spring in the state was accommodated.

In the present invention, the lubricant-containing member is sandwiched between the slider end surface and the plate-like member and disposed in contact with the guide rail, so that it moves along the guide rail integrally with the slider. Then, the lubricant that gradually oozes out from the lubricant-containing member over time is reliably supplied to the guide rail, and the lubricant supplied to the guide rail passes through the surface of the guide rail and the rolling element rolling groove. Supplied to rolling elements.
Also, if the lubricant-containing member itself is sandwiched between the slider end face and the plate-like member without adhering to other members, the rolling element is different from the case where the lubricant is contained in the seal lip portion. It is easy to make it large enough to contain a sufficient amount of lubricant to maintain rolling for a long period of time, and there is no need to bond the lubricant-containing member to a steel plate, etc. is there.
In addition, since the lubricant-containing member is U-shaped, both sleeves can be easily pushed to the left and right, and the operation of attaching the lubricant-containing member across the guide rail can be easily performed. This is advantageous when it is desired to obtain an action of pressing against the guide rail.

Further, since the lubricant-containing member is pressed against the guide rail by providing an urging means such as an elastic body or a coil spring that generates a biasing force that presses the lubricant-containing member against the guide rail, the lubricant-containing member is guided. It always comes in contact with the rail. Further, when the biasing means generates a biasing force, there is no gap between the guide rail and the lubricant-containing member even if there are some manufacturing errors in the lubricant-containing member. Therefore, the lubricant that has oozed out of the lubricant-containing member is stably supplied to the guide rail.

Hereinafter, the material of the lubricant-containing member of the present invention will be described in detail.
First, in the case of a lubricant-containing member obtained by containing a lubricant in rubber, for example, polyurethane rubber cured in a state containing grease can be applied.
Polyurethane rubber is a compound produced by the reaction of polyisocyanate and an active hydrogen compound, and as the polyisocyanate, tolylene diisocyanate, hexamethylene diisocyanate or the like can be used.

  Active hydrogen compounds include hydrocarbons such as polybutadiene, polyethers such as polyoxypropylene, long chain active hydrogen compounds such as castor oil, polyester and polycarbonate, water, polyhydroxy compounds such as ethylene glycol, amino alcohols, polyamino compounds and the like. Short chain active hydrogen compounds can be used. As the grease, normal grease such as mineral oil lithium soap grease can be used.

  Next, when a lubricant-containing member is produced by adding a lubricant to the synthetic resin, the lubricant-containing member is a polyolefin-based resin having basically the same chemical structure such as polyethylene, polypropylene, polybutylene, polymethylpentene, etc. Synthetic resins selected from the group consisting of paraffinic hydrocarbon oils such as poly α-olefin oils, naphthenic hydrocarbon oils, mineral oils, ether oils such as dialkyldiphenyl ether oils, and esters such as phthalate esters. A raw material that has been prepared by mixing any of the oils alone or mixed in the form of mixed oil can be applied by injection molding. Anti-oxidant, anti-rust agent, anti-wear agent, anti-foaming agent in lubricant. Further, various additives such as extreme pressure agents may be added.

The composition ratio of the lubricant-containing member is 20 to 80% by weight of polyolefin resin and 80 to 20% by weight of lubricant with respect to the total weight. When the polyolefin resin is less than 20% by weight, hardness, strength, etc. exceeding a certain level cannot be obtained. Further, when the polyolefin resin exceeds 80% by weight (that is, when the lubricant is less than 20% by weight), the supply of the lubricant is reduced and the effect of reducing the wear of the lip portion of the sealing device is reduced.
The group of synthetic resins have the same basic structure but different average molecular weights, and range from 1 × 10 ^{3 to} 5 × 10 ⁶ . Among them, those having a relatively low molecular weight of 1 × 10 ³ to 1 × 10 ⁶ and an ultrahigh molecular weight of 1 × 10 ^{6 to} 5 × 10 ⁶ are mixed singly or as necessary. Use.

In order to improve the mechanical strength of the lubricant-containing member of the present invention, the following thermoplastic resin and thermosetting resin may be added to the above-mentioned polyolefin resin.
As the thermoplastic resin, resins such as polyamide, polycarbonate, polybutylene terephthalate, polyphenylene sulfide, polyethersulfone, polyetheretherketone, polyamideimide, polystyrene, and ABS resin can be used.
As the thermosetting resin, each resin such as unsaturated polyester resin, urea resin, melamine resin, phenol resin, polyimide resin, and epoxy resin can be used.

These resins may be used alone or in combination.
Furthermore, in order to disperse the polyolefin resin and other resins in a more uniform state, an appropriate compatibilizing agent may be added as necessary.
Moreover, in order to improve mechanical strength, you may add a filler. For example, inorganic whiskers such as calcium carbonate, magnesium carbonate, potassium titanate whisker and aluminum borate whisker, or inorganic fibers such as glass fiber, asbestos and metal fiber, and those braided into a cloth shape, or organic compounds Carbon black, graphite powder, carbon fiber, aramid fiber, polyester fiber, or the like may be added.

Further, for the purpose of preventing deterioration of the polyolefin resin due to heat, an anti-aging agent such as N, N′-diphenyl-P-phenylenediamine, 2,2′-methylenebis (4-ethyl-6-t-butylphenol), For the purpose of preventing deterioration due to light, 2-hydroxy-4-n-octoxybenzophenone, 2- (2′-hydroxy-3′-tert-butyl-5′-methyl-phenyl) -5-chlorobenzo You may add ultraviolet absorbers, such as a triazole.
The addition amount of all the above additives (other than polyfrefin + oil) is preferably 20% by weight or less of the total amount of the molding raw material as a whole, in order to maintain the supply capability of the lubricant.

As described above, according to the present invention, since the lubricant that gradually oozes out from the lubricant-containing member over time can be supplied to the rolling elements via the guide rail, smooth rolling of the rolling elements can be achieved. There is an effect that it can be maintained. In this case, in the case where the side seal is used as the plate-like member, the wear from the contact surface of the side seal with the guide rail can be reduced by the lubricant from the lubricant-containing member, and the foreign material can be transferred to the rolling element rolling groove. Can be prevented and the life of the linear motion guide bearing device can be further increased.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 8 are views showing a first embodiment of the present invention. First, the structure will be described. As shown in FIG. 1 which is a perspective view of the linear motion guide bearing device of the present embodiment, the guide has rolling element rolling grooves 3A and 3B on the outer surface and extends in the axial direction. A rail 1 and a slider 2 assembled across the guide rail 1 are provided.

  Specifically, one rolling element rolling groove 3 </ b> A composed of an axially recessed groove having a substantially arc-shaped cross section is formed at a ridge line portion where the upper surface 1 a and both side surfaces 1 b of the guide rail 1 intersect. The other rolling element rolling groove 3B having a substantially semicircular cross section is formed at an intermediate position on both side surfaces 1b of the guide rail. The groove bottom of the rolling element rolling groove 3B is formed with a cage relief groove 3a that prevents the rolling element from falling off when the slider 2 is not assembled to the guide rail 1.

  On the other hand, the slider 2 includes a slider main body 2A and end caps 2B attached to both ends thereof. The slider main body 2A faces the rolling element rolling grooves 3A and 3B of the guide rail 1 on the inner surface of both sleeve portions 4. In addition to having a load rolling element rolling groove (not shown), it has a rolling element return path that penetrates the thick part of the sleeve portion in the axial direction. On the other hand, the end cap 2B has a curved path (not shown) that connects the rolling element rolling groove of the slider body 2A and the rolling element return path parallel to the rolling element rolling groove, and the rolling element rolling groove and the rolling element return. A rolling element circulation circuit is formed by the path and the curved path at both ends. A large number of rolling elements made of, for example, steel balls are loaded in the rolling element circulation circuit. In the figure, reference numeral 7 denotes a grease nipple.

  The end cap 2B is an injection-molded product made of a synthetic resin material and has a substantially U-shaped cross section. As shown in FIG. 2, which is a perspective view showing the assembled state of the end portion of the slider 2, the outer surface side of both end caps 2B is reinforced as a plate member from the side close to the end cap 2B. The plate 10, the lubricant containing member 11 and the side seal 12 as a plate-like member are fixed in a state of being overlapped.

Among these, the reinforcing plate 10 is a substantially U-shaped steel plate that matches the outer shape of the end cap 2B, and through-holes 10a and 10b for attaching screw penetration are formed in both sleeve portions 10A and 10B. At the same time, a through hole 10c for a grease nipple is formed in the connecting portion 10C that connects the sleeve portions 10A and 10B. The reinforcing plate 10 is not in contact with the guide rail 1.
The side seal 12 includes a substantially U-shaped steel plate that matches the outer shape of the end cap 2B, and a polyurethane rubber containing grease that has a shape similar to that of the steel plate and is integrally formed on the outer surface thereof. It is configured.

  The lip portion 13 in contact with the guide rail 1 of the side seal 12 is guided in accordance with the cross-sectional shape of the guide rail 1 so that the inner surface thereof can seal the gap between the slider 2 and the guide rail 1. The rail 1 is formed into a shape capable of sliding contact with the upper surface 1a and the outer surface 1b, more specifically, a shape capable of sliding contact with the rolling element rolling grooves 3A and 3B and the escape groove 3a. The sleeves 12A and 12B of the side seal 12 are also formed with through holes 12a and 12b for passing through the mounting screws, and the connecting portion 12C for connecting the sleeves 12A and 12B has a grease nipple. A through hole 12c is formed.

  The lubricant-containing member 11 sandwiched between the side seal 12 and the reinforcing plate 10 is formed in a substantially U shape that matches the outer shape of the end cap 2B, and the inner surface of the U shape is The outer surface 1b is flat, not tapered, and includes the upper surface 1a of the guide rail 1 and the rolling element rolling grooves 3A and 3B in accordance with the cross-sectional shape of the guide rail 1 in the same manner as the inner surface of the lip portion 13. The shape can be slidably contacted.

  Further, as shown in FIG. 3 (a) which is a front view of the lubricant-containing member 11 and FIG. 3 (b) which is a side view, the lubricant-containing member 11 is also attached to both sleeve portions 11A and 11B. Through-holes 11a and 11b for screw penetration are formed, and a through-hole 11c for grease nipple is formed in a connecting portion 11C that connects both sleeve portions 11A and 11B. Are open to the outer surface side of the sleeve portions 11A and 11B, and the through hole 11c is open to the upper surface side of the connecting portion 11C.

  The concave portion of the lubricant-containing member 11 is formed such that its inner surface is in sliding contact with the upper surface 1a of the guide rail 1 and the outer surface 1b including the rolling element rolling grooves 3A and 3B, and guides the inner surface of the concave portion. Protrusions 11f, 11g, 11d, and 11e are formed at portions of the rail 1 facing the rolling element rolling grooves 3A and 3B and the escape groove 3a so as to be in sliding contact with the inner surfaces of the grooves 3A, 3B, and 3a. Yes. Further, of the inner surface of the concave portion of the lubricant-containing member 11, the inner bottom surface 11h slidably contacting the upper surface 1a of the guide rail 1 is applied to the sleeve portions 11A and 11B in a state where no force is applied to the lubricant-containing member 11 from the outside. It has an arc shape with a radius of curvature R so that the center side protrudes downward from the near end side.

  The ring-shaped members 15A and 15B are fitted into the through holes 11a and 11b formed in the sleeve portions 11A and 11B of the lubricant-containing member 11, respectively. The ring-shaped members 15A and 15B are short cylindrical members as shown in FIG. 4A, which is a front view thereof, and FIG. 4B, which is a side view thereof. The size is such that it can be easily fitted in 11b.

  Further, the ring-shaped (or solid columnar) member 16 is also fitted into the through-hole 11c formed in the connecting portion 11C of the lubricant-containing member 11. This ring-shaped member 16 is also a short cylindrical member as shown in FIG. 5 (a) which is a front view thereof and FIG. 5 (b) which is a side view thereof. However, the outer diameter DAR of the ring-shaped member 16 is larger than the inner diameter DA of the through hole 11c. That is, by fitting the ring-shaped member 16 into the through hole 11c, the through hole 11c is expanded.

  Furthermore, the length V of the ring-shaped members 15A, 15B and 16 is slightly longer (for example, about 0.2 mm) than the thickness W of the lubricant-containing member 11. That is, when the ring-shaped members 15A, 15B, and 16 are fitted into the through holes 11a to 11c, the ends of the ring-shaped members 15A, 15B, and 16 are attached to the surface of the lubricant-containing member 11 or as shown in FIG. It protrudes from the back side.

  The reinforcing plate 10, the lubricant-containing member 11 and the side seal 12 have mounting screws 17A and 17B that pass through the through holes 2a and 2b of the end cap 2B and are screwed into the main body 2A. The holes 12a and 12b, the ring-shaped members 15A and 15B inside the through holes 11a and 11b of the lubricant containing member 11, and the through holes 10a and 10b of the reinforcing plate 10 are fixed to the main body 2A integrally with the end cap 2B. Is done.

Next, the operation of the present embodiment will be described.
That is, when the slider 2 moves on the guide rail 1 fixed to the machine base, the rolling element in the slider 2 moves in the moving direction of the slider 2 at a slower speed than the slider 2 while rolling in the rolling element rolling path. Then, a U-turn is made on the curved path on one end side, the rolling element return path is moved while rolling in the reverse direction, and a reverse U-turn is made on the curved path on the other end side to return to the rolling element rolling path.

  When the linear motion guide bearing device is driven in this manner, the lubricant-containing member 11 also moves while being in contact with the guide rail 1, and the influence of frictional heat during the movement is also added, so that the lubricant from the lubricant-containing member 11 passes over time. However, the lubricant that has oozed out gradually into the rolling elements rolling in the rolling element rolling grooves 3A and 3B through the rolling element rolling grooves 3A and 3B of the guide rail 1, in particular. Supplied automatically. This self-lubricating property enables a stable and smooth operation over a long period of time. Therefore, a good operation can be continued for a long time with a low torque even without supplying a lubricant to the slider 2 from the outside.

  Further, since the inner surface shape of the concave portion of the lubricant-containing member 11 is matched with the cross-sectional shape of the guide rail 1 as described above, the lubricant-containing member 11 has the upper surface 1a of the guide rail 1 as shown in FIG. Since the lubricant-containing member 11 itself contracts as the lubricant oozes out from the lubricant-containing member 11, the lubricant-containing member 11 is guided by the contracting force. It is also possible to obtain an effect of always in close contact with the surface to be sealed and performing a sealing function and a lubricating function.

In the case of the present embodiment, since the side seal 12 is used as the plate-like member on the outer surface of the lubricant-containing member 11, the sealing performance is further improved.
In particular, in the present embodiment, since the upper surface side of the through hole 11c formed in the connecting portion 11C of the lubricant-containing member 11 is notched and opened, as shown in FIG. 11B can be easily pushed to the left and right, so that the operation of attaching the lubricant-containing member 11 across the guide rail 1 can be easily performed.

  And since the ring-shaped member 16 whose outer diameter is larger than the inner diameter is fitted into the through-hole 11c as an urging means, the lubricant-containing member 11 is inserted into the guide rail 1 as shown in FIG. In the straddled state, the ring-shaped member 16 pushes the through-hole 11c to the left and right to generate a biasing force that presses the sleeve portions 11A and 11B against the guide rail 1. For this reason, even if there is a slight manufacturing error in the dimensions of the lubricant-containing member 11 and the lubricant-containing member 11 is somewhat worn, the lubricant-containing member 11 is more reliably attached to the sealed surface of the guide rail 1. It can be brought into close contact with each other at all times. In this case, in the structure in which the upper surface side of the through-hole 11c is cut open, the force to push and spread by the ring-shaped member 16 is converted into a biasing force that presses the sleeve portions 11A and 11B against the guide rail 1. It is very advantageous for operation.

  Moreover, the length V of the ring-shaped members 15A, 15B, and 16 is made larger than the thickness W of the lubricant-containing member 11, and the ends of the ring-shaped members 15A, 15B, and 16 are placed on the surface of the lubricant-containing member 11. Alternatively, since the attachment means of the lubricant-containing member 11 is configured to protrude from the back surface, the lubricant-containing member 11 is interposed between the reinforcing plate 10 and the side seal 12 even though it is sandwiched between them. The friction of is small. For this reason, since the deformation | transformation to the direction orthogonal to the axial direction of the guide rail 1 of the lubricant containing member 11 by the self-contraction and urging | biasing force mentioned above is performed smoothly, the lubricant containing member 11 is always made into the guide rail 1 reliably. It can be adhered.

Furthermore, since the inner bottom surface 11h of the concave portion of the lubricant-containing member 11 has the arc shape as described above, the sleeve portions 11A and 11B of the lubricant-containing member 11 are pressed against the guide rail 1 by the above-described self-shrinkage and urging force. When deformed in the direction, the inner bottom surface 1 h approaches a horizontal state, and the inner bottom surface 1 h comes into stable contact with the upper surface 1 a of the guide rail 1.
Further, since the lubricant-containing member 11 is a member that is sandwiched and disposed between the reinforcing plate 10 and the side seal 12, it can contain a sufficient amount of lubricant to maintain rolling of the rolling element for a long period of time. It is easy to make the size. In addition, since the lubricant-containing member 11 is not structured to be fixed to another member such as a steel plate, the parts cost of the lubricant-containing member 11 that is a consumable item can be reduced, and the labor for installation is also simple. There is an advantage of being.

Since the lubricant-containing member 11 is disposed between the reinforcing plate 10 and the side seal 12, the slider 2 reciprocates at the portion of the side seal 12 that contacts the guide rail 1, that is, the lip portion 13. Since it is difficult to roll up even if it moves, the grease inside the slider 2 is also reduced from leaking to the outside.
Further, since the lubricant that has oozed out from the lubricant-containing member 11 is also supplied to the lip portion 13 that contacts the guide rail 1 of the side seal 12, it also helps to reduce wear of the lip portion 13, In particular, in the present embodiment, since the lip portion 13 is formed from polyurethane rubber cured in a state containing grease, the lubricant is also supplied from the lip portion 13 and the wear of the lip portion 13 can be further reduced. Then, since the wear of the lip portion 13 is minimized, the sealing performance by the lip portion 13 is maintained for a long period of time, foreign matter is prevented from entering the main body 2A side, and the life of the linear motion guide bearing device itself is extended. There is an advantage that it can be planned.

In the case of the structure as in the present embodiment, since the lubricant for the rolling elements is constantly supplied from the lubricant-containing member 11, the grease nipple mounting hole may be closed with a blind plug. Accordingly, it may be opened at an appropriate time to supply a lubricant such as grease into the slider.
Here, in the present embodiment, the side seal 12 corresponds to a plate member, the reinforcing plate 10 corresponds to another plate member, and the ring member 16 corresponds to a biasing means.

9 and 10 are diagrams showing a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member and site | part similar to the said 1st Embodiment, and the overlapping description is abbreviate | omitted.
That is, in the present embodiment, the shape of the lubricant-containing member 11 is changed in the linear motion guide bearing device having the same structure as that of the first embodiment.
Specifically, as shown in FIG. 9 which is a front view of the lubricant-containing member 11, the sleeve portions 11A and 11B are continuous with the through holes 11a and 11b through which the mounting screws pass, and the sleeve portions 11A and 11B. Notches 20A and 20B are formed so that the outer side surface and the tip side are open, and the inner diameters of the ring-shaped members 15A and 15B fitted into the through holes 11a and 11b are set outside the threaded portions of the mounting screws 17A and 17B. It is larger than the diameter. Other configurations are the same as those in the first embodiment.

  With such a configuration, as shown in FIG. 10 which is a front view of the lubricant-containing member 11 straddling the guide rail 1, when the mounting screws 17A and 17B are loosened, the ring-shaped members 15A and 15B are Since it can move outside, only the lubricant-containing member 11 can be removed from the linear motion guide bearing device so as to be pulled upward. Further, the new lubricant-containing member 11 can be fitted from above the guide rail 1 without removing the side seal 12 and the like from the main body 2A, and the ring-shaped members 15A and 15B are pushed inward to form the through holes 11a, The lubricant-containing member 11 can be mounted by tightening the mounting screws 17A and 17B after being positioned within 11b.

That is, according to the configuration of the present embodiment, the lubricant-containing member 11 in which the lubricant has sufficiently oozed out can be easily replaced with a new lubricant-containing member 11, so that the cassette method is simple. Lubricant can be replenished with effort and without getting your hands dirty.
Other functions and effects are the same as those of the first embodiment.
11 to 17 are views showing a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member and site | part similar to said each embodiment, and the overlapping description is abbreviate | omitted.

That is, in the present embodiment, the structure for generating the urging force that presses the sleeve portions 11A and 11B of the lubricant-containing member 11 against the guide rail 1 is different from that of the first embodiment. is there.
Specifically, as shown in FIG. 11 which is a perspective view showing the assembled state of the end portion of the slider 2, FIG. 12A which is a front view of the lubricant-containing member 11, and FIG. 12B which is a side view. In addition, the through-hole 11c of the lubricant-containing member 11 is omitted, and the groove on the side seal 12 side surface of the lubricant-containing member 11 is continuous in a substantially U-shape so as to surround the recess of the lubricant-containing member 11. 30 is formed, and an elastic body 31 as an urging means as shown in FIG. 13 (a) which is a front view and (b) which is a bottom view is fitted in the recessed groove 30.

The elastic body 31 is an elastically deformable member made of steel, synthetic resin, or hard rubber, and is formed in a substantially U shape according to the shape of the concave groove 30. Then, the U-shaped opening side is slightly narrowed in a state where no force is applied from the outside.
Other configurations are the same as those in the first embodiment. However, in the present embodiment, corresponding to the omission of the through hole 11c of the lubricant-containing member 11, the through hole 10c of the reinforcing plate 10 and the through hole 12c of the side seal 12 are also omitted, and the grease nipple is provided. Although not provided, each through hole 10c, 11c, 12c is formed as in the first embodiment, and the grease nipple mounting hole is normally closed with a blind plug, and this is opened as needed. A lubricant such as grease may be supplied into the slider.

  And if it is a structure like this Embodiment, with the elastic force of the elastic body 31 in the ditch | groove 30, as shown in FIG. An urging force to be pressed is generated, and as shown in FIG. 15, when attaching the lubricant-containing member 11, the sleeve portions 11 </ b> A and 11 </ b> B can be pushed left and right. Therefore, as shown in FIG. 16, the lubricant-containing member 11 can be stably adhered to the guide rail 1. In particular, the shape of the elastic body 31 when no load is applied is such that the gap on the tip side is narrowed, so even if the lubricant-containing member 11 is worn to some extent, the inner surfaces of the sleeve portions 11A and 11B are more reliably guided. Can be pressed against. Moreover, as shown in FIG. 17, since the ring-shaped members 15A and 15B protrude from the surface of the lubricant-containing member 11 as in the first embodiment, the lubricant-containing member 11 can be smoothly deformed. It has become.

From the above, even with the configuration of the present embodiment, the same effects as those of the first embodiment can be obtained.
In addition, the elastic body 31 that generates the urging force is disposed so as to surround the concave portion of the lubricant-containing member 11, and the distal end portion of the elastic body 31 reaches the vicinity of the distal end portions of the sleeve portions 11A and 11B. There is an advantage that the urging force by the elastic body can be more reliably transmitted to the sleeve portions 11A and 11B.

18A and 18B are views showing a fourth embodiment of the present invention, in which FIG. 18A is a front view of the lubricant-containing member 11, and FIG. 18B is a cross-sectional view taken along line AA in FIG. FIG.
That is, the configuration of the fourth embodiment is basically the same as that of the third embodiment except that the upper surface of the connecting portion 11C of the lubricant-containing member 11 is opened upward. A point is formed by forming a substantially rectangular notch 11D.

When such a notch 11D is formed, the rigidity of the connecting portion 11C is reduced, and therefore, the elastic force of the elastic body 31 is effectively converted into a biasing force that presses the sleeve portions 11A and 11B against the guide rail 1. The lubricant-containing member 11 can be reliably adhered to the guide rail 1. Other functions and effects are the same as those of the third embodiment.
19 to 22 are views showing a fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member and site | part similar to said each embodiment, and the overlapping description is abbreviate | omitted.

  That is, in the present embodiment, as shown in FIG. 19A, which is a front view of the lubricant-containing member 11, and FIG. 19B, which is a side view, on the outer peripheral surface of the lubricant-containing member 11. The outer peripheral groove 33 is formed continuously on the outer surfaces of the sleeve portions 11A and 11B and the upper surface of the connecting portion 11C. In addition, the both ends of the outer periphery groove | channel 33 are formed with the dent 33a which goes inside the both sleeve parts 11A and 11B.

And the elastic body 34 as an urging | biasing means as shown in FIG. The elastic body 34 is the same as the elastic body 31 shown in the third embodiment, except that the size of the elastic body 34 is large and the protrusion 34a is fitted into the recess 33a at the tip. It has the same configuration.
Even in such a configuration, as shown in FIG. 21A, the elastic body 34 urges the sleeve portions 11A and 11B toward the guide rail 1, so that the lubricant-containing member 11 is stably guided. As shown in FIG. 21 (b), the ring-shaped members 15A and 15B protrude from the surface of the lubricant-containing member 11 as in the first embodiment. The agent-containing member 11 can be smoothly deformed. Accordingly, even in the fifth embodiment, the same operational effects as those of the third embodiment can be obtained.

  And if it is the structure of this Embodiment, as shown especially in FIG. 22, only the elastic body 34 can be attached or detached, without loosening or removing the mounting screws 17A and 17B. For this reason, since it is possible to attach the elastic body 34 after assembling all the parts, when it is not necessary to press the lubricant-containing member 11 against the guide rail 1, the elastic body 34 is removed and it is necessary to press it. Only the elastic body 34 can be attached, or the elastic body 34 can be replaced when the pressing force of the lubricant-containing member 11 against the guide rail 1 is to be changed.

  Therefore, for example, immediately after the start of use of the new lubricant-containing member 11, the lubricant-containing member 11 is hardly worn, and can be sufficiently adhered without attaching the elastic body 34, If the elastic body 34 is attached, the amount of the lubricant that oozes out may be excessive, so the elastic body 34 is removed. Then, if the wear progresses and the adhesiveness decreases, the elastic body 34 is attached so as to be sufficiently adhered. In some cases, when the wear progresses, the elastic body 34 is replaced with a strong elastic force 34. For example, the amount of the lubricant exuded from immediately after the start of use to immediately before replacement can be stabilized.

Further, in the present embodiment, the recesses 33a are formed at both ends of the outer circumferential groove 33, and the convex portions 34a that fit into the recesses 33a are formed at the end portions of the elastic body 34. Even if it is a configuration to be fitted, the elastic body 34 does not easily fall off or shift in the removal direction.
FIG. 23 is a front view of the lubricant-containing member 11, showing a sixth embodiment of the present invention.
That is, the configuration of the sixth embodiment is basically the same as that of the third embodiment, except that the upper surface of the connecting portion 11C of the lubricant-containing member 11 is opened upward. A substantially rectangular notch 11D is formed, and this is the point, so that the same function and effect as in the fourth embodiment can be obtained. Other functions and effects are the same as those of the fifth embodiment.

24 to 26 are views showing a seventh embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member and site | part similar to said each embodiment, and the overlapping description is abbreviate | omitted.
That is, in the present embodiment, as shown in FIG. 24 which is a front view of the lubricant-containing member 11, the connecting portion 11C of the lubricant-containing member 11 extends in the width direction of the lubricant-containing member 11. A linear concave groove 37 is formed. And the elastic body 38 as an urging | biasing means as shown to Fig.25 (a) which is a front view, and FIG.25 (b) which is a bottom view is engage | inserted in the concave groove 37. FIG.

The elastic body 38 is a thin prismatic elastic body made of steel, synthetic resin, or hard rubber slightly curved in a square shape. FIG. 26 (a) is a front view and FIG. 26 (b) is a side view. As shown in FIG. 4, the groove is fitted into the concave groove 37 with its shape curved in the opposite direction.
Even in such a configuration, the connecting portion 11C of the lubricant-containing member 11 tends to be bent inward by the elastic restoring force of the elastic body 38, so that the urging force that presses the sleeve portions 11A and 11B against the guide rail 1 is generated. appear. Therefore, the same effects as those in the first embodiment can be obtained.

27 to 29 are views showing an eighth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member and site | part similar to said each embodiment, and the overlapping description is abbreviate | omitted.
That is, in the present embodiment, as shown in FIG. 27 which is a front view of the lubricant-containing member 11, a rectangular through hole 39 that is long in the left-right direction is formed in the connecting portion 11C of the lubricant-containing member 11. is doing. A notch 11E is formed on the upper side of the lubricant-containing member 11 so as to communicate with the through hole 39.

And the coil spring 40 as an urging means as shown in FIG. 28 (a) which is a front view and FIG. 28 (b) which is a side view, in a state where its expansion and contraction direction is directed in the left-right direction and slightly compressed, As shown in FIG. 29 (a) which is a front view and FIG. 29 (b) which is a partially broken side view, it is accommodated in the through hole 39.
Even in this configuration, the notch 11E reduces the rigidity of the connecting part 11C in the left-right direction, and the connecting part 11C of the lubricant-containing member 11C expands left and right by the elastic restoring force of the coil spring 40. As a result, an urging force that presses the sleeve portions 11A and 11B against the guide rail 1 is generated. Therefore, the same effects as those in the first embodiment can be obtained.

FIG. 30 is a diagram showing a ninth embodiment of the present invention, in which FIG. 30 (a) is a front view and FIG. 30 (b) is a partially broken side view. In addition, the same code | symbol is attached | subjected to the member and site | part similar to said each embodiment, and the overlapping description is abbreviate | omitted.
That is, in the present embodiment, slits 41A and 41B are formed in the sleeve portions 11A and 11B of the lubricant-containing member 11 so as to extend in the vertical direction and open to the distal ends of the sleeve portions 11A and 11B. In the middle of the slits 41A and 41B, rectangular through holes 42A and 42B that are long in the left and right direction are formed, and in the through holes 42A and 42B, as an urging means in a state in which the expansion and contraction direction is directed in the left and right directions and slightly compressed. The coil springs 43A and 43B are accommodated.

Even in such a configuration, the rigidity of the connecting portion 11C in the left-right direction is reduced by the slits 41A and 41B, and the elastic restoring force of the coil springs 43A and 43B is directly used as the guide rail 1 for the sleeve portions 11A and 11B. Since the urging force is pressed, the same effect as the first embodiment can be obtained.
FIG. 31 is a view showing a tenth embodiment of the present invention, and FIGS. 31 (a) to 31 (d) are perspective views showing modifications of the ring-shaped member 16 fitted into the through hole 11 c of the lubricant-containing member 11. FIG. The configuration other than the ring-shaped member 16 is the same as that of the first embodiment.

  That is, in the present embodiment, the ring-shaped member 16 as an urging means formed from a deformable material such as a metal or a polymer material (plastic, rubber, etc.) is axially provided on the outer peripheral surface. An extending slit 16a is formed. As in the above embodiments, the inner diameter of the through-hole 11c is slightly smaller than the outer diameter of the ring-shaped member 16, and the ring-shaped member 16 is fitted into the through-hole 11c with the diameter reduced. However, since the slit 16a is formed, the elastic deformation in the direction in which the diameter of the ring-shaped member 16 expands and contracts can be performed more greatly and smoothly. Then, since the action of expanding the through hole 11c can be stably obtained over a long period of time, the urging force for pressing the sleeve portions 11A and 11B against the guide rail 1 is maintained for a long period of time, and the first embodiment described above is performed. The same effect as the form can be obtained more reliably.

  The diameter-enlarging action of the ring-shaped member 16 in the state fitted in the through hole 11c is determined by the size and number of slits 16a formed therein, the thickness and material of the ring-shaped member 16, and the like. Because the urging force for pressing the sleeve portions 11A and 11B against the guide rail 1 and the wear limit amount of the lubricant-containing member 11 are determined by the deformation characteristics of 16, the above factors are the size and specification of the linear motion guide bearing device to be applied, It is necessary to select appropriately according to the rigidity of the lubricant-containing member 11 or the like. Therefore, the number of slits 16a is not limited to the example shown in FIGS. 31A to 31D, and is completely arbitrary.

  FIG. 32 is a view showing a modification of the tenth embodiment, and instead of the ring-shaped member 16, a solid columnar member 16A as urging means is fitted into the through hole 11c. In this case, a slit 16b is formed in the columnar member 16A so that the diameter can be increased or decreased. Even when such a columnar member 16A is used, the same effect as that obtained when the ring-shaped member 16 as shown in FIG. 31 is used can be obtained. Since the diameter expanding action of the columnar member 16 is determined by the material, the size and number of the slits 16b, and the like, as in the case of the ring member 16, these factors are applied to the linear motion guide to be applied. It is necessary to select appropriately according to the size and specification of the bearing device, the rigidity of the lubricant-containing member 11, and the like. Accordingly, the size and number of the slits 16b are not limited to the examples shown in FIGS. 32A to 32C, but are completely arbitrary.

FIG. 33 is a view showing an eleventh embodiment of the present invention, and is a front view of the lubricant-containing member 11 in a state straddling the guide rail 1. In addition, the same code | symbol is attached | subjected to the member and site | part similar to said each embodiment, and the overlapping description is abbreviate | omitted.
That is, in the present embodiment, a total of two through holes 11c are formed at positions from both sleeve portions 11A and 11B of the connecting portion 11C of the lubricant containing member 11, and the tenth through hole is formed in each through hole 11c. The ring-shaped member 16 having the slit 16a shown in the embodiment is fitted.

  Even in the configuration in which a plurality of the through-holes 11c and the ring-shaped member 16 are provided in this way, the connecting portion 11C of the lubricant-containing member 11 tends to be curved inward due to the diameter expansion force of the ring-shaped member 16. A biasing force that presses the portions 11A and 11B against the guide rail 1 is generated. Therefore, the same effects as those in the first embodiment can be obtained. Note that three or more through holes 11c may be formed, or a columnar member 16A as shown in FIG. 32 may be fitted into the plurality of through holes 11c instead of the ring-shaped member 16.

In the above embodiment, the case where the lip portion 13 is molded from rubber containing a lubricant is described. However, since the lubricant is supplied from the lubricant-containing member 11 to the lip portion 13, the lip portion 13 May be NBR (acrylonitrile butadiene rubber) containing no lubricant.
In the configuration of each of the above embodiments, the reinforcing plate 10 may be omitted, and the lubricant containing member 11 may be disposed between the end cap 2B and the side seal 12, or the lubricant containing member 11 may be disposed. Substantially functions as a sealing device, and instead of the side seal 12, a steel plate similar to the reinforcing plate 10 may be provided as a reinforcing plate or protector. In some cases, a side seal 12 may be disposed between the lubricant-containing member 11 and the end cap 2B instead of the reinforcing plate 10.

Furthermore, in each of the above-described embodiments, the length V of the ring-shaped members 15A, 15B, 16 is larger than the thickness W of the lubricant-containing member 11, but the length V is equal to or slightly different from the thickness W. It may be small. In short, when the lubricant-containing member 11 is fixed by tightening the mounting screws 17A and 17B, the screws 17A and 17B are excessively tightened and the lubricant-containing member 11 is in a direction perpendicular to the axial direction of the guide rail 1. It is sufficient that the relationship between the length V and the thickness W is not disturbed.
The linear motion guide bearing device to which the present invention can be applied is not limited to the type of the embodiment described above. For example, the load rolling element rolling groove may be other than one on two sides, and the rolling element is a ball. Instead, for example, it may be a roller.

1 is a perspective view of a linear motion guide bearing device according to a first embodiment of the present invention. It is a perspective view which shows the attachment state of each member of a linear motion guide bearing apparatus edge part. It is a figure which shows the structure of the lubricant containing member of 1st Embodiment. It is a figure which shows the structure of a ring-shaped member. It is a figure which shows the structure of a ring-shaped member. It is a side view of a lubricant content member in the state where a ring-shaped member was attached. It is a front view of the lubricant containing member in the state where it straddled the guide rail. It is explanatory drawing of an effect | action. It is a front view which shows the structure of the lubricant containing member of 2nd Embodiment. It is explanatory drawing of an effect | action of 2nd Embodiment. It is a perspective view which shows the attachment state of each member of the linear motion guide bearing apparatus edge part of 3rd Embodiment. It is a figure which shows the structure of the lubricant containing member of 3rd Embodiment. It is a figure which shows the structure of the elastic body of 3rd Embodiment. It is explanatory drawing of an effect | action of 3rd Embodiment. It is explanatory drawing of an effect | action of 3rd Embodiment. It is a front view of a lubricant content member in the state where it straddled the guide rail of a 3rd embodiment. It is a side view of a lubricant content member in the state where a ring-shaped member of a 3rd embodiment was attached. It is a figure which shows the structure of the lubricant containing member of 4th Embodiment. It is a figure which shows the structure of the lubricant containing member of 5th Embodiment. It is a figure which shows the structure of the elastic body of 5th Embodiment. It is a figure explaining the assembly | attachment state of 5th Embodiment. It is a perspective view of the linear guide bearing apparatus of 5th Embodiment. It is a front view which shows the lubricant containing member of 6th Embodiment. It is a figure which shows the structure of the lubricant containing member of 7th Embodiment. It is a figure which shows the structure of the elastic body of 7th Embodiment. It is a figure explaining the assembly | attachment state of 7th Embodiment. It is a front view which shows the lubricant containing member of 8th Embodiment. It is a figure which shows the structure of the elastic body of 8th Embodiment. It is a figure explaining the assembly | attachment state of 8th Embodiment. It is a front view which shows the structure of 9th Embodiment. It is a perspective view which shows 10th Embodiment. It is a perspective view which shows the modification of 10th Embodiment. It is a front view which shows the structure of 11th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 1a Upper surface 1b Side surface 2 Slider 2A Main body 2B End cap 3A, 3B Rolling body rolling groove 10 Reinforcement board (plate-shaped member)
DESCRIPTION OF SYMBOLS 11 Lubricant containing member 11A, 11B Sleeve part 11C Connection part 11a-11c Through-hole 12 Side seal (plate-shaped member)
13 Lip part 15A, 15B Ring-shaped member 16 Ring-shaped member (biasing means)
16A cylindrical member (biasing means)
17A, 17B Mounting screw 20A, 20B Notch 31, 34, 38 Elastic body (biasing means)
40, 43A, 43B Coil spring (biasing means)

Claims (19)

A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In a linear motion guide bearing device loaded with
The lubricant-containing member itself of the lubricant-containing rubber or synthetic resin from Do Ri and straddle the guide rail U-shaped, without adhering to another member, the end portion of the slider, the end face of the slider and the plate And is attached in a state where at least a part of the lubricant-containing member is in contact with the guide rail ,
The U-shaped inner surface of the lubricant-containing member has a shape that can be slidably contacted with the upper surface of the guide rail and the outer surface including the rolling element rolling groove according to the cross-sectional shape of the guide rail. Linear motion guide bearing device characterized by the above. Of the U-shaped inner surface of the lubricant-containing member, a portion facing the rolling element rolling groove of the guide rail is formed with a convex portion so as to be in sliding contact with the inner surface of the rolling element rolling groove. linear guide bearing apparatus according to claim 1, wherein there. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And at least a part of the lubricant-containing member is attached in contact with the guide rail,
A linear guide bearing device characterized in that a through-hole is formed in a connecting portion connecting the U-shaped sleeve portions of the lubricant-containing member, and the through-hole is open on the upper surface side of the connecting portion. . A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In a linear motion guide bearing device loaded with
The lubricant-containing member itself of the lubricant-containing rubber or synthetic resin from Do Ri and straddle the guide rail U-shaped, without adhering to another member, the end portion of the slider, the end face of the slider and the plate While attached in a state of being sandwiched between members,
Through-holes are formed in both U-shaped sleeve portions of the lubricant-containing member, and a ring-shaped member is fitted in each of the through-holes . A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
A linear guide bearing device, wherein a through hole is formed in a connecting portion connecting the U-shaped sleeve portions of the lubricant-containing member, and a ring-shaped member is fitted in the through hole . The linear guide bearing device according to claim 5 , wherein an outer diameter of the ring-shaped member is larger than an inner diameter of the through hole . The linear guide bearing device according to claim 5 or 6, wherein a length of the ring-shaped member is longer than a thickness of the lubricant-containing member . The linear guide bearing device according to claim 5 or 6, wherein a length of the ring-shaped member is equal to or smaller than a thickness of the lubricant-containing member. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
The linear guide bearing device, wherein the lubricant-containing member and the plate-like member are fixed to the slider by mounting screws that pass through them and screw into the slider. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And the other plate-like member is sandwiched between the end surface of the slider and the lubricant-containing member,
The linear guide bearing device, wherein the plate-like member is a side seal and the other plate-like member is a reinforcing plate made of a steel plate. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
Both the U-shaped sleeve portions of the lubricant-containing member are formed with through holes through which the mounting screws pass, and the outer surface side and the distal end side of each sleeve portion are opened so as to be continuous with each of the through holes. A notch is formed in the through hole, and a ring-shaped member is fitted in the through hole, and the inner diameter of the ring-shaped member is larger than the outer diameter of the threaded portion of the mounting screw. Dynamic guide bearing device. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
A concave groove continuous in a U-shape is formed on the surface of the lubricant-containing member on the plate-like member side so as to surround a U-shaped concave portion of the lubricant-containing member, and the lubricant-containing member is formed in the concave groove. A linear motion guide bearing device, wherein an elastic body that generates an urging force that presses the guide rail against the guide rail is fitted. The linear motion guide bearing device according to claim 12, wherein a distal end portion of the elastic body reaches a vicinity of a distal end portion of the sleeve portion. 14. The linear motion guide bearing device according to claim 12, wherein a rectangular notch opened upward is formed on an upper surface of a connecting portion that connects the U-shaped sleeve portions of the lubricant-containing member. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
An outer peripheral groove that is continuous on the outer surface of the U-shaped sleeve portions of the lubricant-containing member and the upper surface of the connecting portion that connects the sleeve portions is formed on the outer peripheral surface of the lubricant-containing member. A linear motion guide bearing device, wherein an elastic body that generates an urging force for pressing the lubricant-containing member against the guide rail is fitted. The linear motion guide bearing device according to claim 15, wherein recesses that enter the inside of the sleeve portion are formed at both ends of the outer circumferential groove. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
A concave groove extending in the width direction of the lubricant-containing member is formed in a connecting portion that couples the U-shaped sleeve portions of the lubricant-containing member, and the lubricant-containing member is formed in the guide rail in the concave groove. A linear guide bearing device, wherein an elastic body that generates a pressing force to be pressed is fitted. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
In the connecting portion that connects the U-shaped sleeves of the lubricant-containing member, a rectangular through hole that is long in the left-right direction of the lubricant-containing member is formed, and the through-hole is formed on the upper side of the connecting portion. Form a notch that leads to
A linear motion guide bearing device characterized in that a coil spring in a compressed state is accommodated in the through-hole in a state in which the expansion and contraction direction is directed in the left-right direction. A slider is loosely fitted to a guide rail that has a rolling element rolling groove on the outer surface and extends in the axial direction. The slider is a load rolling element rolling groove facing the rolling element rolling groove of the guide rail, and the load rolling element. A number of rolling elements provided with a rolling element circulation path composed of rolling element return paths connected to both ends of the rolling groove via a curved path, and for relatively moving the slider along the guide rail in the rolling element circulation path In the linear motion guide bearing device loaded with
An end face of the slider and a plate-like member are formed at the end of the slider without adhering the U-shaped lubricant-containing member itself, which is made of lubricant-containing rubber or synthetic resin and straddles the guide rail, to other members. And attached in a state sandwiched between and
A slit extending in the vertical direction and opening to the front end side of each sleeve is formed in both U-shaped sleeves of the lubricant-containing member, and a rectangular through hole elongated in the left-right direction is formed in the middle of the slit. A linear guide bearing device characterized in that a coil spring in a compressed state is accommodated in the through-hole in a state in which the expansion and contraction direction is directed in the left-right direction.

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