JP2006292176A - Lubricant supply body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-safety lubricant supply body allowing use in an oil seal device or the like of a food machine. <P>SOLUTION: This lubricant supply body 11 formed of a solid synthetic resin containing a lubricant supplies the lubricant to a side seal 10 and a rail 1 mutually needing lubrication. The lubricant supply body 11 is interposed between the side seal 10 and a reinforcing plate 20 and is fixed to an end cap 2B. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a member for supplying a lubricant, and in particular, is interposed between a plurality of members that are in a relationship of rolling or sliding contact with each other, and is used to provide lubrication between these members. The present invention relates to a lubricant supply body.

  This type of lubricant supply body is provided with a lubricant-containing polymer that contains a lubricant in advance so as to come into contact with a portion requiring supply of the lubricant such as a linear motion guide bearing, a ball screw, and an oil seal. It is configured to be mounted and automatically supply the lubricant to that location.

  Examples of this type of lubricant supplier include those described in the microfilm (hereinafter referred to as the first conventional example) of Japanese Utility Model Application No. 5-33341 (Japanese Utility Model Application Publication No. 7-4952), and Japanese Patent Application Laid-Open No. 6-346919. No. 1 (hereinafter referred to as “second conventional example”).

  In the first conventional example, a lubricant-containing polymer member is also attached to the end of the ball screw nut so as to be slidable in contact with the screw groove of the screw shaft, and also gradually exudes over time. Lubricating oil is automatically supplied to the ball after passing through the thread groove so as to perform a lubricating action over a long period of time.

In the second conventional example, a seal member such as a side seal attached to a slider of a linear guide device is formed of a rubber or synthetic resin containing a lubricant, and the rolling element on the side surface of the guide rail with which the seal lip portion contacts. The contained lubricant gradually oozes out on the rolling groove surface over time and is automatically supplied to the rolling elements so as to perform a lubricating action over a long period of time.
Microfilm of Japanese Utility Model No. 5-33341 (No. 7-4952) JP-A-6-346919

  However, the conventional lubricant supply agent has the following problems. First, when this lubricant supply body is used in a food machine such as for producing food, there is a possibility that the lubricant that exudes from the lubricant supply body is mixed into the food being manufactured. In the conventional lubricant supply body, there is no consideration of using a lubricant that is harmless to the human body as the lubricant. Therefore, it is not possible to use the conventional lubricant supply body in the field of food machinery or the like from the viewpoint of safety. Have difficulty.

  Secondly, the synthetic resin (or rubber) constituting the lubricant supply body may be mixed into the food due to the influence of wear when placed between the members in sliding contact with each other. In this case as well, there was no consideration of using a synthetic resin or rubber constituting the conventional lubricant supply body that is harmless to the human body. For this reason as well, it has been difficult to use a conventional lubricant supplier for a food machine or the like.

  Accordingly, an object of the present invention is to provide a highly safe lubricant supplier that can be used in food machines and the like in order to solve such problems.

  In order to achieve the above object, the present invention is composed of a synthetic resin containing a lubricant and is applied to a plurality of members that require lubrication, and gradually exudes from the synthetic resin to the members. A lubricant supplier configured to supply an incoming lubricant, wherein the lubricant comprises liquid paraffin, or grease containing liquid paraffin as a base oil and a thickener as aluminum soap; It consists of a polyolefin-type synthetic resin.

  The lubricant supplier of the present invention is a lubricant composed of a liquid paraffin that meets food safety standards or a grease composed of a liquid paraffin base oil and an aluminum soap thickener, and a polyolefin-based synthetic resin. Because it is a molded product made of a polymer containing an agent, it is highly safe and requires the supply of lubricants such as linear motion bearings, ball screws, and oil seals for food machinery, medical instruments, and cosmetic machines. It is attached to the place to be done, and the lubrication at that place can be maintained well.

  The content of the lubricant in the lubricant supply body is 10 to 90% by weight. If it is less than 10% by weight, the lubricant content is low and the supply of the lubricant between the members requiring lubrication is not sufficient. On the other hand, if it exceeds 90% by weight, the amount of the synthetic resin is relatively reduced, and mechanical properties such as strength of the molded product are deteriorated. From the relationship between necessary lubricity and mechanical strength, the content of the lubricant is more preferably 50 to 80% by weight.

  Next, the synthetic resin used for the lubricant supply body of the present invention will be described. The lubricant-containing polymer constituting the lubricant supply body of the present invention is preferably solidified in a state containing a lubricant, and contains a polyolefin-based synthetic resin as a main component. As this synthetic resin, those that meet the standards set by the FDA (Food and Drug Administration) are good, and specifically, polyethylene, polypropylene, polymethylpentene, and the like can be used. These polyolefin-based synthetic resins usually contain stabilizers to prevent deterioration, specifically antioxidants, and, if necessary, UV absorbers (light-resistant, especially in the case of grades that require weather resistance. In general, the material itself contains a trace amount (about 0.001 to 0.05% by weight) in the material itself. Therefore, since the polyolefin-based synthetic resin itself is not harmful, these stabilizers are selected from those that are highly safe for the human body.

  These polyolefin-based synthetic resins are excellent in wear resistance even when placed between a plurality of members that are in contact with each other in a state of friction such as sliding contact and rolling. From the viewpoint of wear resistance, a high-density or ultra-high molecular weight (ultra-high density) polyolefin is preferable.

  Antioxidants that meet the standards set by the FDA and that are effective for polyolefin-based synthetic resins include N, N′di-naphthyl-p-phenylenediamine, 2,6 · di-tert-butyl-4-methylphenol , 2 (3) -tert-butyl-4-hydroxyanisole, 2,2′-methylene-bis- (4-methyl-6-sect-3-butylphenol), 2,2′-methylene-bis- (4 -Ethyl-6-tert-butylphenol), 4,4'-methylene-bis- (2,6-tert-butylphenol), 2,2'-dihydroxy-3,3'-di- (α-methyl) (Cyclohexyl) -5,5'-dimethyl-diphenylmethane, 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, 4,4 ' -Thiobis- (6-tert-butyl-3-methylpheno 1,1,3-tris- (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, 4,4′-butylidenebis- (3-methyl-6-tert-butylphenol), n-octadecyl-3- (4′-hydroxy-3 ′, 5′-di-tert-butyl-phenyl) propionate, tetrakis- [methylene-3- (3 ′, 5′di-tert-butyl-4) '-Hydroxyphenyl) propionate) methane, tris (nonyl-phenyl) phosphite, tris (mixed mono- and di-nonylphenyl) phosphite, dilauryl-thiodipropionate, distearyl-thiodipropionate, dimyristyl -3,3'-thiodipropionate.

  Among these, in view of safety, an antioxidant that meets the FDA standards as a safe substance is suitable. Specifically, 2,6-di-tert-butyl-4- Examples include methylphenol, 2 (3) -tert-butyl-4-hydroxyanisole, dilauryl thiodipropionate, and the like.

  As an ultraviolet absorber (light stabilizer) that passes FDA standards and is effective for the polyolefin-based synthetic resin of the present invention, 2-hydroxy-4-n-octoxy-benzophenone, 2- (2′-hydroxy-3 ′) -Tert-butyl-5'-methyl-phenyl) -5-chloro-benzotriazole and the like.

  The polyolefin-based synthetic resin containing a small amount of the stabilizer described above basically conforms to FDA standards and is suitable as the lubricant supply body of the present invention.

  These polyolefin-based synthetic resins may not necessarily contain these additives.

  As the lubricant that can be used in the lubricant supply body of the present invention, liquid paraffin (white oil) that passes FDA standards, or grease that uses liquid paraffin as the base oil and thickener as the aluminum soap is suitable.

  In addition, as long as safety is not impaired, for example, for the purpose of improving lubricity, it has ester chemicals as an additive and has the following chemical formula, which passes FDA standards and is harmless even if mixed into foods, etc. Other oil components such as chain fatty acid triglycerides may be included.

  From the viewpoint of compatibility between the low-polarity polyolefin synthetic resin and the high-polar ester oil, the mixing amount may be 30% by weight or less of the total oil amount in order to maintain the oil retaining property of the product. preferable. If ester oil exceeding 30% by weight is contained, the oil retaining property of the member is lowered, which is not suitable for containing a large amount of lubricant in the member, and at the same time, the speed at which the lubricant exudes from the member is increased and the period of lubrication is increased. Will end early.

  Additives such as highly safe antioxidants similar to those added to the polyolefin-based synthetic resin can be added to the lubricant. The lubricant supplier of the present invention is manufactured by cost-effective injection molding in which the polymer and the lubricant are mixed and heated and melted, and then injected into a predetermined mold and cooled and solidified while being pressed. The

  However, other than that, a material having an appropriate shape may be made by injection molding or heat molding, and then made into a desired shape by machining. Further, the lubricant supply body itself may be thermoformed.

  The lubricant supply body of the present invention is composed of a lubricant composed of grease that uses liquid paraffin or liquid paraffin as a base oil and aluminum soap as a thickener, and a polyolefin-based synthetic resin that conforms to FDA standards. Since it is composed of a lubricant-containing polymer, it is highly safe and can be suitably used for bearing devices, ball screws, oil seals, etc. for food machinery, medical instruments, cosmetic machinery and the like.

  In the embodiment of the present invention, the lubricant supply body can be used as an oil seal member for a linear guide device, a lubricant supply to a seal lip of an oil seal device, and a seal and lubricant supply body for a ball screw device.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, which shows an example in which a lubricant supply body is incorporated in a side seal of a linear guide device.

  As shown in FIG. 1 which is an overall perspective view, this linear guide device is assembled with a guide rail 1 extending in the axial direction having rolling element rolling grooves 3 and 3 ′ on the outer surface and straddling the guide rail 1. The slider 2 is provided.

  The slider 2 includes a slider main body 2A, and further, rolling element rolling grooves facing the rolling element rolling grooves 3 and 3 'of the guide rail 1 are provided on the rail side inner surface of both sleeve portions 4 in the width direction. In addition, a rolling element return path that penetrates the thick portion of the sleeve portion in the axial direction is provided in parallel while facing the rolling grooves of both sleeve portions 4.

  On the other hand, the end cap 2B has a curved path for communicating 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 circulation path for the rolling elements is formed by the path and the curved paths at both ends. A large number of rolling elements made of, for example, steel balls are loaded in the circulation circuit of the rolling elements.

  The slider 2 incorporated in the guide rail 1 moves smoothly along the guide rail 1 through the rolling of the rolling elements in both opposing rolling element rolling grooves. During the movement, the rolling element moves in the slider. It is designed to circulate infinitely through the moving body circulation path.

  Side seals 10 are attached to the end faces of the end caps 2 </ b> B at both ends of the slider 2 in the rail direction so as to seal the opening of the gap with the guide rail 1. Then, as shown in the exploded perspective view of FIG. 2, a lubricant-containing polymer member 11 as a lubricant supply body is sandwiched and assembled between the reinforcing plate 20 and the side seal 10 so as to overlap the side seal 10. ing. Reference numeral 7 denotes a grease nipple for supplying grease to the rolling elements inside the slider 2 as required.

  The side seal 10 is composed of a substantially U-shaped steel plate that matches the outer shape of the end cap 2B, and a nitrile rubber that has a shape similar to that of the steel plate and is integrally fixed to the outer surface thereof. ing. The seal lip portion L in contact with the guide rail 1 is formed on the upper surface 1a and the outer surface 1b of the guide rail 1 in accordance with the cross-sectional shape of the guide rail 1 so that the gap between the slider 2 and the guide rail 1 can be sealed. The slidable shape is formed into a shape that can also be slidably contacted with the rolling element rolling grooves 3 and 3 ′.

  Further, through-holes 10a and 10b for attaching screws are formed in both sleeve portions of the side seal 10, and a through-hole 10c for grease nipple is formed in a connecting portion for connecting both sleeve portions. ing.

The lubricant-containing polymer member 11 made of a molded article of the lubricant-containing polymer is, for example, 20% by weight of high-density polyethylene (molecular weight 1 × 10 ^{4 to 5} × 10 ⁵ ) and ultrahigh molecular weight polyethylene (molecular weight 1 × 10 ^{6 to} 5 × 10 ⁶ ) 10% by weight. After using plastics containing 70% by weight of liquid paraffin as a lubricant conforming to FDA standards, and plasticizing (dissolving) them once using an injection molding machine Then, it is molded by being cooled and solidified while being injected and pressurized into a predetermined mold.

  As shown in the enlarged perspective view of FIG. 3, the shape is a substantially U-shape matched to the outer shape of the end cap 2 </ b> B, and has a predetermined thickness such as to secure a necessary amount of lubricant. The shape of the inner surface matches the outer shape of the cross section of the actual rail 1 and is formed along the upper surface 1a and the side surface 1b of the guide rail 1, and the rolling elements on the guide rail 1 are formed. Protrusions 12a and 12b corresponding to the rolling groove 3 ′ and protrusions 13a and 13b corresponding to the lower rolling element rolling groove 3 are formed, respectively, and are aligned with the cross-sectional outer shape of the guide rail 1. .

  Further, through-holes 11a and 11b for penetrating mounting screws to the end cap 2B of the slider are formed in both sleeve portions of the lubricant-containing polymer member 11 by being cut open in the axial direction. The connecting portion to be connected is formed with a through hole 11c that is for a grease nipple and is partially cut in the axial direction.

  Then, as shown in FIG. 2, ring-shaped sleeve members 11A, 11B, and 11C are fitted into the through holes 11a, 11b, and 11c, respectively. The ring-shaped sleeve members 11A, 11B and 11C are short cylindrical members formed slightly longer than the thickness of the lubricant-containing polymer member 11 (L2 is longer than L1), and the outer diameter thereof is a through hole 11a. , 11b and 11c, and can be easily fitted into the end cap 2B when the lubricant-containing polymer member 11 is attached to the end cap 2B, thereby preventing the member 11 from being compressed more than necessary. The lubricant is prevented from being squeezed out of the member 11.

  Further, the outer diameters of the ring-shaped sleeve members 11A, 11B, and 11C are formed larger than the outer diameters of the through holes 11a, 11b, and 11c. Thus, by enlarging the sleeve diameter, the inner surface of the lubricant-containing polymer member 11 can be constantly pressed against and closely adhered to the outer surface of the guide rail 1, and the lubricant that exudes can be stably supplied to the rail. Can do.

  The reinforcing plate 20 is a substantially U-shaped steel plate or a synthetic resin plate that matches the outer shape of the end cap 2B, and through holes 22a and 22b for penetrating the mounting screws 21a and 21b are formed on both sleeves. At the same time, a through hole 22c for the grease nipple 7 is formed in the connecting portion that connects the two sleeve portions. The reinforcing plate 20 is not in contact with the guide rail 1.

  The lubricant-containing polymer member 11 is usually stacked on the side seal 10 and the reinforcing plate 20 and sandwiched between them. However, since the lubricant-containing polymer member 11 is in close contact with the outer surface of the guide rail and can perform the same sealing function as the side seal 10, the reinforcing plate 20 may be used instead of the side seal 10, or the reinforcing plate. 20 may be mounted only on the surface of the lubricant-containing polymer member 11, and the back surface may be mounted so as to directly contact the end surface of the end cap 2B.

  In this embodiment, the three members of the side seal 10, the lubricant-containing polymer member 11, and the reinforcing plate 20 connect the mounting screws 21 a and 21 b to the through holes 10 a and 10 b of the side seal 10 and the lubricant-containing polymer member 11. The member 11A, 11B and the through hole 20a, 20b of the reinforcing plate 20 and the screw hole of the end cap 2B are screwed into the mounting screw hole of the slider main body 2A, so that the end cap 2B is overlaid on the main cap 2A. Fixed.

  In this linear guide device, the inside of the slider 2 may be filled with grease. In that case, food machine grease is used which is based on liquid paraffin that meets FDA standards and the thickener is aluminum soap. It is good.

  According to this embodiment, by using a material conforming to food safety standards for the lubricant supply body for supplying the lubricant necessary between the side seal 10 and the rail and the linear guide device itself, It is possible to provide a safe oil seal for a linear guide device applicable to a food machine.

  FIG. 4 shows a second embodiment and is a partial cross-sectional view in the axial direction of the lubricant supply body of the present invention incorporated for supplying lubricant to the seal lip portion of the oil seal device. In other words, the oil seal device 33 is attached to the end of the rotating shaft 31 supported by the bearing 30 via the housing 32. The rubber seal lip 33a on the inner peripheral surface of the oil seal device 33 is in sliding contact with the outer peripheral surface of the rotary shaft 31 to perform a sealing function. To maintain the sealing performance and life, the rotary shaft 31 and the seal lip are maintained. It is necessary to continuously supply the lubricant to the sliding contact portion with 33a.

For this purpose, a lubricant-containing polymer member 41 as a lubricant supply body is attached to the front end portion of the housing 32 adjacent to the oil seal device 33 and fixed by screws 34. In this case, the lubricant-containing polymer member 41 conforms to the FDA standard composed of, for example, 20% by weight of high-density polyethylene (molecular weight 1 × 10 ^{4 to 5} × 10 ⁵ ) and 10% by weight of ultrahigh molecular weight polyethylene (molecular weight 1 × 10 ^{6 to} 5 × 10 ⁶ ). The raw material is polyethylene containing 70% by weight of grease for food machinery, which is made of liquid paraffin that meets FDA standards as a lubricant and aluminum soap as a thickener, and uses this as an injection molding machine. After being plasticized (dissolved), it is a thick annular shape that is injected into a predetermined mold and pressurized and cooled and solidified, and its inner peripheral surface becomes a sliding contact surface with the rotary shaft 31. Is.

  When the rotating shaft 31 rotates, the lubricant-containing polymer member 41 at the end slides while being in contact with the rotating shaft 31 (sliding contact). The lubricant contained in the tissue gradually exudes over time. The lubricant that has oozed out is supplied to the oil seal device 33 through the rotary shaft 31, and spreads uniformly on the seal lip 33a to achieve a stable sealing performance for a long time.

  The lubricant-containing polymer member 41 also functions as a seal member that seals the end of the rolling bearing 30, and double-seals the interior of the housing 32 together with the oil seal device 33 to shield it from the outside atmosphere. Thereby, even when the external atmosphere is in a bad environment such as water and dust, the inside of the rolling bearing 30 is protected against the water and dust and can maintain a smooth lubricating action for a long time. .

  5 and 6 show a third embodiment, in which the lubricant supply body 50 of the present invention is mounted on a nut end face as a seal and lubricant supply body of a seal-type ball screw device. FIG. 5 is a side view in which a part of the seal member is cut away, and FIG. 6 is a longitudinal sectional view of the ball screw showing a state in which this member is mounted on the nut end of the ball screw device.

  The lubricant supply body 50 has a ring shape that is slightly longer in the axial direction. The lubricant supply body 50 has a protrusion 50a that fits into the thread groove 51a of the screw shaft 51 on the inner peripheral surface, and a cut 52 that cuts the ring on the side surface. Is provided in one place. An annular peripheral groove 54 into which the garter spring 53 is fitted is formed on the outer peripheral surface of the lubricant supply body 50.

  Further, a cylindrical reinforcing member 55 is fitted at a position where it does not interfere with the circumferential groove 54 (only one place is shown). The lubricant supply body 50 is formed by opening the slit 52 and expanding the ring so as to fit the screw shaft 51. Then, the lubricant supply body 50 is fitted into the recess 57 on the end surface of the ball screw nut 56 and is screwed from the side surface of the nut. The tip is fixed by engaging with the reinforcing member 55.

  The lubricant supply body 50 expanded and attached by the cut 52 is elastically tightened by the garter spring 53, so that the thread groove 51a of the screw shaft 51 and the convex portion 50a on the inner periphery of the lubricant supply body 50 are fitted. The gap is kept below zero. The spiral screw groove 21a provided on the outer peripheral surface of the screw shaft 51, the spiral screw groove 56a provided on the inner peripheral surface of the ball screw nut 56, and a plurality of balls 58 loaded between the grooves. The lubricant that gradually oozes out from the lubricant supplier 50 is automatically supplied to the contact surface with the contact surface, and the increase in frictional resistance is suppressed, and the lubricant also contributes to the lubrication of the ball screw itself.

  This ball screw may be filled with grease inside the ball screw nut 56, and in that case, liquid paraffin conforming to FDA standards is used as a base oil, and a thickener conforming to FDA standards is used as the aluminum soap. The food machinery grease is used.

  In addition, since the reinforcing member 55 is provided, the force applied from the mounting screw 58 is not directly applied to the lubricant supply body 50. Therefore, the lubricant body 50 can also be configured from a soft polymer containing a large amount of lubricant. is there.

The lubricant supply body 50 made of a molded product of the lubricant-containing polymer is made of, for example, 25% by weight of high density polyethylene (molecular weight 1 × 10 ^{4 to 5} × 10 ⁵ ) and 10% by weight of ultrahigh molecular weight polyethylene (molecular weight 1 × 10 ^{6 to} 5 × 10 ⁶ ). A material that contains 65% by weight of liquid paraffin as a lubricant that complies with the FDA standard and is plasticized (dissolved) once using an injection molding machine, It is molded by cooling and solidifying while being injected and pressurized into a predetermined mold.

  An outer shell member 57 made of polyacetal serving as a cover and a seal is attached to the lubricant supply body 50 so as to cover the periphery thereof, and a portion corresponding to the screw shaft 51 is a labyrinth seal having a slight gap. ing.

  FIG. 7 shows a schematic diagram of a ball shaft in which a rolling element 72 supported by a retainer 74 is provided between the inner and outer rings 70 and 71 so as to roll freely. A lubricant-containing polymer is filled in the inner space of the inner ring and the outer ring of the bearing. The composition of the lubricant polymer is 15% by weight high density polyethylene that meets FDA standards, 10% by weight ultra-high molecular weight polyethylene that meets FDA standards, and 75% by weight liquid paraffin that meets FDA standards.

  Next, this lubricant-containing polymer was molded under the following conditions. Here, the possibility of molding of a lubricant-containing polymer based on the following two types of lubricants for food machinery was examined.

(1) Liquid paraffin (white oil) (Japan Oil Co., Ltd .: High White 350)
(2) Medium-chain fatty acid triglyceride (Japan Petroleum Corporation: Foodle)
Heating to 160 degrees Celsius while mixing 70% by weight of each of the lubricating oils of (1) and (2) and 30% by weight of high-density polyethylene powder, and the state at the time of heating and when it is solidified by cooling Was observed. The results are shown in Table 1.

  As is clear from Table 1, a uniform lubricant supply body can be formed based on liquid paraffin. However, if only medium-chain fatty acid triglycerides, which are esters, are used instead of liquid paraffin, it is difficult to obtain a lubricant supply body having uniform properties. In the latter lubricant-containing polymer, the polymer and lubricating oil are mixed non-uniformly, so it is difficult to integrate them uniformly, and in places where there are few polymer parts, the rolling elements are subject to excessive wear and lubrication. Oil will be supplied too quickly, making it difficult to maintain the lubricant supply for a long time.

  From this, it is not possible to easily obtain a lubricant supply body suitable for food machinery simply by replacing all mineral oils and the like conventionally used as lubricants with food machinery lubricants. It is preferable to consider the compatibility (compatibility) with the synthetic resin.

  In addition to the fact that lubricants and resins conform to FDA standards, other (national or private) food safety standards, food compatibility standards, etc., when applied to food manufacturing machines, pharmaceutical manufacturing machines, etc. It may be such that it meets one or more required criteria.

Furthermore, in the present application, the high density of polypropylene means, for example, 0.94 to 0.97 (g / cm ³ ). Ultra-high density refers to a density exceeding this, for example.

  The lubricant supplier of the present invention is a lubricant composed of a liquid paraffin that meets food safety standards or a grease composed of a liquid paraffin base oil and an aluminum soap thickener, and a polyolefin-based synthetic resin. Because it is a molded product made of a polymer containing an agent, it is highly safe and requires the supply of lubricants such as linear motion bearings, ball screws, and oil seals for food machinery, medical instruments, and cosmetic machines. It is attached to the place to be done, and the lubrication at that place can be maintained well.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole perspective view which shows the 1st Example of this invention and shows the example which incorporated the lubricant supply body in the linear guide apparatus. It is a disassembled perspective view in the rail direction edge part of the slider of this linear guide apparatus. It is a perspective view of a lubricant containing body. FIG. 6 is a sectional view in the axial direction of an oil seal device in which a lubricant supply body is incorporated for supplying a lubricant to a seal lip portion according to a second embodiment of the present invention. FIG. 7 is a side view of a third embodiment of the present invention, in which a part of a seal and lubricant supply body applied to a seal-type ball screw device is cut away. It is sectional drawing of the longitudinal direction of a ball screw which shows the state which mounted | wore the nut end of the ball screw apparatus with this member. FIG. 3 is a schematic view of a ball bearing in which a lubricant-containing polymer is filled in inner spaces of an inner ring and an outer ring of the bearing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 2 Slider 2B End cap 3, 3 'Rolling body rolling groove 10 Side seal 11, 41, 50 Polymer member 20 containing a lubricant Reinforcing plate L Seal lip part 30 Bearing 31 Rotating shaft 32 Housing 32
33 Oil seal device

Claims (1)

Lubrication composed of a synthetic resin containing a lubricant and applied to a plurality of members requiring lubrication, and configured to supply a lubricant that gradually exudes from the synthetic resin to the member Lubricant, characterized in that the lubricant is composed of liquid paraffin or grease containing liquid paraffin as a base oil and thickener as aluminum soap, and the synthetic resin is composed of a polyolefin-based synthetic resin. Agent supply body.

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