Mounting structure for a sliding scraper and a linear guide device

Abstract

A mounting structure for a sliding scraper, the mounting structure comprising: a slider (14) which slides over a guide rail (12); a rectangular U-shaped mounting plate (16; 52; 74) attached to one end face of the slider (14) and having opposite vertical frames (18; 53; 75) and a horizontal frame (20; 59; 76) connecting the opposite vertical frames (18; 53; 75); and a sliding scraper (30A; 48A; 71; 80) fitted into a rectangular U-shaped groove of the mounting plate (16; 52; 74) and having opposite vertical sections (32; 41; 50; 62; 72; 81) and a horizontal section (34; 55; 66; 73; 83) connecting the opposite vertical sections (32; 41; 50; 62; 72; 81), and a groove section (36; 90) in sliding contact with the guide rail (12), wherein at least one open end portion of an inner side surface of each of the opposite vertical frames (18; 53; 75) of the fixing plate (16; 52; 74) or at least one end portion of an outer side surface of each of the opposite vertical portions of the sliding scraper (30A; 48A; 71; 80), the end portion facing the relevant opening portion, a projection portion (38; 54; 64; 78; 84) is provided, at which the relevant vertical frame (18; 53; 75) and the relevant vertical portion (32; 41; 50; 62; 72; 81) abut each other, characterized in that the sliding scraper (30A; 48A; 71; 80) is formed from an elastomer which includes a sliding layer on an inner surface of the groove portion (36; 90) into which a fabric material and the elastomer are integrated, wherein the sliding layer is formed by integrating the fabric material and the elastomer during molding so that the fabric material contacts and slides on the guide rail (12).

Description

Technical area

[0001] The present invention relates to a fixing structure for a sliding scraper fixed to a slider extending along a guide rail and a linear guide device. State of the art

[0002] Conventionally, a linear guide device comprises a guide rail and a slider slidably straddled over the guide rail (Patent Literature 1). A fixing plate is fixed to each end surface in a sliding direction of the slider, and a sliding scraper is received in a recessed groove of the fixing plate.

[0003] The sliding scraper is formed of an elastic material such as rubber and abuts against an upper surface and opposite side portions of the guide rail and is thus sealed to prevent foreign matter from entering the interior of the slider from a gap between the slider and the guide rail. Citation listPatent literature Patent Literature 1: Japanese Patent No. JP 4 232 389 B1 Patent Literature 2: JP 2006 046 529 A; this document shows a generic fastening structure. Patent Literature 3: DE 11 2009 002 104 T5; this document discloses a sealing plate for the motion control device. Patent Literature 4: DE 102 43 871 A1; this document also discloses a sealing device for a guide assembly and a guide assembly. Summary of the inventionTechnical problem

[0004] A sliding blade is formed by vulcanization molding of an elastomer such as rubber, and after demolding, the vulcanized molded sliding blade tends to move in the direction indicated by the arrow X in Fig. 8A is indicated.

[0005] If such a sliding scraper 7 is fitted into a mounting plate 2 and mounted on a guide rail 3, as in Fig. 8B, a gap 8 forms between the sliding scraper 7 and opposite side surfaces of the guide rail 3 due to deformation caused by mold shrinkage. There is a risk of foreign matter, such as dust, penetrating through such a gap 8.

[0006] An object of the present invention is to provide a fixing structure for a sliding scraper, the fixing structure more reliably ensuring close contact with a guide rail and a linear guide device. Solution to the problem

[0007] A fixing structure for a sliding scraper according to the present invention comprises: a slider slidably spread over a guide rail; a rectangular U-shaped fixing plate attached to one end surface of the slider and having opposed vertical frames and a horizontal frame connecting the opposed vertical frames; and a sliding scraper fitted into a rectangular U-shaped groove of the fixing plate and having opposed vertical portions and a horizontal portion connecting the opposed vertical portions, and a groove portion in sliding contact with the guide rail, and wherein at least one open end portion of an inner side surface of each of the opposed vertical frames of the fixing plate or at least one end portion of an outer side surface of each of the opposed vertical portions of the sliding scraper,The end portion facing the relevant opening portion has a projection portion at which the relevant vertical frame and the relevant vertical portion abut each other. Furthermore, the sliding scraper is formed of an elastomer, which includes a sliding layer on an inner surface of the groove portion, into which a fabric material and the elastomer are integrated. The sliding layer is formed by integrating the fabric material and the elastomer during molding, so that the fabric material contacts and slides on the guide rail.

[0008] The linear guide device according to the present invention is a linear guide device comprising a guide rail and a slider slidably spread over the guide rail, a sliding scraper having a groove portion in sliding contact with the guide rail fitted in a rectangular U-shaped groove of a fixing plate on one end surface in a sliding direction of the slider, the sliding scraper comprising the above-mentioned fixing structure. Advantageous effect of the invention

[0009] In a fixing structure for a sliding scraper according to the present invention, a protrusion portion at which a vertical frame and a relevant vertical portion abut against each other is provided on at least one open end portion of an inner side surface of each of the opposed vertical frames of a fixing plate or at least one end portion of an outer side surface of each of the opposed vertical portions of the sliding scraper, the end portion facing the open end portion, and thus the opposed vertical portions of the sliding scraper are pressed against respective side surfaces of a guide rail, thereby more reliably ensuring that the sliding scraper is in close contact with the guide rail and thus preventing intrusion of foreign matter. Short description of the drawings Fig. 1 is a perspective view of a linear guide device according to a first embodiment; Fig. 2 is a front view illustrating a state in which a sliding scraper according to the first embodiment is attached to a mounting plate; Fig. 3 is a front view illustrating a state in which a sliding scraper according to a modification of the first embodiment is attached to a fixing plate; Fig. 4A is a front view illustrating a state in which a sliding scraper according to a second embodiment is attached to a mounting plate, and Fig. 4B is a front view illustrating a state in which a sliding scraper according to the modification (1) of the second embodiment is attached to a fixing plate; Fig. 5A is a front view illustrating a state in which a sliding scraper according to the modification (2) of the second embodiment is attached to a fixing plate, and Fig. 5B is a front view illustrating a state in which a sliding scraper according to the modification (3) of the second embodiment is attached to a fixing plate; Fig. 6 is a front view illustrating a state in which a sliding scraper according to a third embodiment is attached to a mounting plate; Fig. Fig. 7 is a front view illustrating a state in which a sliding scraper according to a fourth embodiment is attached to a mounting plate; and Fig. Fig. 8A is a front view illustrating a conventional sliding scraper, and Fig. 8B is an explanatory diagram illustrating a state in which the sliding scraper is in Fig. 8A is attached to a mounting plate. Description of embodiments

[0010] Embodiments of the present invention will be described in detail below with reference to the drawings. 1. First embodiment

[0011] As in Fig. 1, a linear guide device 10A includes a guide rail 12 and a slider 14 slidably mounted over the guide rail 12. Within the slider 14, rolling elements, such as balls or tapered rollers (not shown), are provided that move along side surfaces 19 of the guide rail 12.

[0012] A rectangular U-shaped fixing plate 16 is attached to at least one end surface in a sliding direction (indicated by the arrow S) of the slider 14, for example, via screws. As shown in Fig. 2, the mounting plate 16 comprises a rectangular U-shaped groove 22 formed by opposing vertical frames 18 and a horizontal frame 20 connecting the opposing vertical frames 18.

[0013] At a substantially central portion of the horizontal frame 20 of the fixing plate 16, an arcuate bulge portion 24 is formed, which projects into the rectangular U-shaped groove 22 of the fixing plate 16. A sliding scraper 30A, which will be described later, which is in sliding contact with an upper surface and opposite side surfaces of the guide rail 12 at a groove portion 36, is fitted into the rectangular U-shaped groove 22 of the fixing plate 16.

[0014] Fixing screw holes 26 for fixing to the above-described slider 14 are provided in the vertical frame 18 and the horizontal frame 20 of the fixing plate 16. Furthermore, a hole 25 extending through the horizontal frame 20 is formed in the arcuate bulge portion 24 provided in the horizontal frame 20 of the fixing plate 16. The hole 25 has a function of, for example, supplying grease to the linear guide device 10A. A material of the fixing plate 16 is not particularly limited, and examples of the material of the fixing plate 16 include metals and resins.

[0015] As in Fig. 2, the sliding scraper 30A includes opposed vertical portions 32, 32 and a horizontal portion 34 connecting the opposed vertical portions 32, 32, and the groove portion 36 having a sliding layer in sliding contact with the guide rail 12 is formed by opposed vertical portions 32, 32 and the horizontal portion 34.

[0016] In addition, the sliding scraper 30A is provided with protrusion portions 38 on respective outer side surfaces of the opposed vertical portions 32, 32 facing the respective vertical frames 18 of the fixing plate 16, the protrusion portions 38 abutting against the respective inner side surfaces of the vertical frames 18 of the fixing plate 16. Each of the protrusion portions 38 is formed at an end portion facing an open end portion of a relevant inner side surface of the rectangular U-shaped groove 22 of the fixing plate 16 (hereinafter sometimes referred to as a "lower end").

[0017] Furthermore, a recess portion 40 is provided in an outer surface of the horizontal portion 34, the outer surface facing the horizontal frame 20 of the mounting plate 16. The recess portion 40 is provided near a substantially central portion of the horizontal portion 34 and abuts a lower end portion of the bulge portion 24, which projects into the rectangular U-shaped groove 22 of the mounting plate 16.

[0018] The protrusion portions 38 provided at the respective lower ends of the sliding scraper 30A abut against side surfaces of the mounting plate 16 on the vertical frame 18. In this case, a distance between the end surfaces of the opposing protrusion portions 38 is preferably equal to or slightly larger than a distance between the vertical frames 18, 18 of the mounting plate 16 (i.e., a distance between the inner side surfaces of the rectangular U-shaped groove 22). Consequently, the sliding scraper 30A is pressed against the side surfaces of the guide rail 12, thereby suppressing the formation of a gap.

[0019] It is also preferable that a length L1 in a vertical direction of the protrusion portions 38 is not more than 60%, preferably not more than 50%, but not less than 5%, preferably not less than 10%, of a height L2 of the vertical portions 32 of the sliding scraper 30A.

[0020] On the other hand, the recessed portion 40 provided in the horizontal portion 34 abuts against and is pressed by the lower end portion of the bulge portion 24 of the fixing plate 16, thereby preventing the formation of a gap between the upper surface of the guide rail 12 and the sliding scraper 30A.

[0021] The force of the sliding scraper 30A abutting against the guide rail 12 can be adjusted by changing the size or shape of the protrusion portions 38 or the recess portion 40, or the positions in the outer surfaces of the sliding scraper 30A where the protrusion portions 38 or the recess portion 40 are formed. The protrusion portions 38 and the recess portion 40 may be formed simultaneously at the time of molding the sliding scraper 30A, or may be formed, for example, by subjecting the sliding scraper 30A to cutting after the molding of the sliding scraper 30A.

[0022] As in Fig. 2, the sliding scraper 30A is fitted into the rectangular U-shaped groove 22 of the mounting plate 16. The rectangular U-shaped groove 22 may be formed in an inner portion of the mounting plate 16 or may be formed in a front surface of the mounting plate 16 on the opposite side of a mounting surface on the slider 14.

[0023] When the fixing plate 16 is attached to the slider 14, the fixing plate 16 serves as a retaining plate that presses the sliding scraper 30A against the slider 14.

[0024] The shape of the recess portion 40 is not limited to an arc-like shape as shown in Fig. 2 and may, for example, be a polygonal shape, a triangular shape or a rectangular shape.

[0025] The sliding scraper 30A comprises an elastic material (elastomer) with a sliding layer on inner surfaces (i.e., surfaces forming the groove portion 36). The sliding layer is a layer formed by integrating a fiber and an elastomer, and has low resistance to sliding on the guide rail 12 and excellent resistance to sliding friction.

[0026] The elastomer mainly improves the service life of the fiber. Examples of the elastomer include elastomers such as natural rubber, nitrile rubber, chloroprene rubber, Hypalon, polybutadiene rubber, ethylene-propylene rubber (EPM), ethylene-propylene-diene terpolymer (EPDM) rubber, hydrogenated acrylonitrile-butadiene rubber (H-NBR), silicon rubber, fluorine-containing rubber, acrylic rubber, styrene-butadiene rubber, chlorinated polyethylene rubber, millable urethane, thermosetting polyurethane, thermoplastic polyurethane, and thermoplastic polyester, and one or more of such elastomers are used.

[0027] A vulcanizing agent, a vulcanization accelerator, and a reinforcing agent may be blended into the elastomer forming the sliding layer. Examples of the vulcanizing agent include, for example, organic peroxides such as dicumyl peroxide, organic sulfur compounds, and metal oxides. Examples of the vulcanization accelerator include, for example, fatty acids such as stearic acid and metal oxides. Examples of the reinforcing agent include, for example, carbon black and white carbon. Further, for example, an antioxidant, a filler, a plasticizer, and / or an adhesive may be blended. In addition to these agents, graphite, silicone oil, fluorine powder, or a solid lubricant such as molybdenum disulfide may be included in the elastomer.

[0028] The fiber forming the sliding layer is in sliding contact with the guide rail 12 and can thereby reduce resistance to sliding on the periphery of the guide rail 12. Examples of the fiber include nylon fiber, aramid fiber, polyester fiber, carbon fiber, Teflon (registered trademark) fiber, liquid crystal polymer fiber, glass fiber, and cotton yarn. The fiber may also be in the form of a woven material or may be blended into the elastomer in the form of short fibers.

[0029] The sliding layer may comprise a woven material with an elastomer impregnated therein. If the fiber is in the form of a woven material, the woven material and the elastomer are integrated during molding, so that the woven material contacts and slides on the guide rail 12. On the other hand, if the woven material is in the form of short fibers, the short fibers are mixed into the elastomer and then subjected to integral molding. Woven, knitted, or nonwoven fabrics can be used as the woven material.

[0030] As described above, as a result of the provision of the projection portions 38 on the respective vertical portions 32, wherein the projection portions 38 abut against the respective inner surfaces of the vertical frames 18 within the rectangular U-shaped groove 22 on the fixing plate 16, the sliding scraper 30A prevents the formation of a gap between the sliding scraper 30A and the guide rail 12, thereby preventing the intrusion of foreign matter. In addition, the sliding scraper 30A is in uniform contact with the guide rail 12 and thus does not provide excessive sliding resistance. The fixing of such a sliding scraper 30A to the Fig. The slider 14 shown in Figure 1 enables smooth movement of the linear guide device 10A on the guide rail 12.

[0031] As a result of the protrusion portions 38 abutting against the respective vertical frames 18, the opposed vertical portions 32, 32 of the sliding scraper 30A are pressed against the respective side surfaces of the guide rail 12 and are thus more reliably brought into close contact with the side surfaces of the guide rail 12 to prevent the intrusion of foreign matter.

[0032] The sliding scraper 30A includes the sliding layer, thereby enabling a reduction in sliding resistance, a smooth movement of the guide rail 12, and an improvement in service life. (Modification)

[0033] Fig. 3 illustrates a modification of the Fig. 2. In a sliding scraper 30B shown in the figure, a cutout portion 42 is formed in each of the outer side surfaces of the opposed vertical portions 41, and the projecting portions 43, 44 are formed at a lower end portion and an upper end portion, respectively, with a gap formed therebetween by the cutout portion 42. A gap is formed between the projecting portion 44 at the upper end portion and the fixing plate 16 by a chamfered portion 45 formed at an upper end of the sliding scraper 30B.

[0034] As above, it is preferred here that a total length in a vertical direction (L3 + L4) of the two protrusion portions 43, 44 is not more than 60%, preferably not more than 50%, but not less than 5%, preferably not less than 10% of a height L5 of the vertical portions 41 of the sliding scraper 30B.

[0035] The other components are similar to those of the mounting structure for the sliding scraper 30A, which is Fig. 2, and therefore, those components are designated by reference numerals identical to those of the sliding scraper fixing structure 30A, and a description thereof will be omitted.

[0036] In the case of the present modification, due to the abutment of the projections 43, 44 against the vertical frame 18, the opposite vertical portions 41, 41 of the sliding scraper 30B are pressed against side surfaces of a guide rail 12, and thus effects similar to those of the above-described embodiment can be obtained.

[0037] Although the present embodiment has been described with respect to a case where a sliding scraper includes a sliding layer on a surface forming a groove portion 36, the sliding layer may be omitted if appropriate. 2. Second embodiment

[0038] Fig. 4A and Fig. 4B illustrate attachment structures for sliding scrapers 48A, 48B according to a second embodiment of the present invention. As with the sliding scraper 30A shown in Fig. 2, the Fig. 4A has a projection portion 54 at a lower end of an outer side surface of each vertical portion 50, the projection portion 54 abutting against a relevant vertical frame 53 of a fixing plate 52.

[0039] In addition, a recess portion 56 is formed at a substantially central portion of a horizontal portion 55 of a sliding scraper 48A and abuts against an arcuate bulge portion 57 at a substantially central portion of a horizontal frame 59 of the fixing plate 52. In this case, a gap 58A is formed between the horizontal frame 59 and the horizontal portion 55 of the sliding scraper 48A, except for a part of the stopper between the recess portion 56 and the bulge portion 57.

[0040] In addition, the fixing plate 52 has a protrusion portion 61 formed at a lower end of each vertical frame 53, the protrusion portion 61 protruding inward, and a gap 60A is also formed between the protrusion portion 61 and a relevant lower end surface of the sliding scraper 48A.

[0041] As a result of the provision of the gaps 58A, 60A, a clearance portion is secured for the sliding scraper 48A, enabling a reduction in sliding resistance. The other components are similar to those of the previously described embodiment.

[0042] As a result of the provision of the projection portions 54 abutting against the respective vertical frames 53, the opposed vertical portions 50, 50 of the sliding scraper 48A are pressed against the respective side surfaces of a guide rail 12, and thus effects similar to those of the above-described embodiment can be obtained.

[0043] Fig. Figure 4B illustrates a modification of the Fig. 4A. As shown in Fig. 4B, the sliding scraper 48B includes a cutout portion 63 formed in an outer side surface of each of the opposed vertical portions 62 connected by a horizontal portion 55, and projection portions 64, 65 are formed at a lower end portion and an upper end portion of the sliding scraper 48B, respectively, with a gap formed therebetween by the horizontal cutout portion 63. The other components are similar to those of the above-described embodiment and are therefore denoted by the same reference numerals as in the above-described embodiment, and their description will be omitted.

[0044] Since the gaps 58A, 60A are provided, effects similar to those of the present embodiment can be obtained. Since the protrusion portions 64, 65 abut the respective vertical frames 53, the opposing vertical portions 62 of the sliding scraper 48B are pressed against the respective side surfaces of a guide rail 12, thus achieving effects similar to those of the first embodiment described above.

[0045] Fig. 5A and Fig. 5B illustrate attachment structures for sliding scrapers 48C, 48D according to yet another embodiment of the present invention. As with the sliding scraper 30A shown in Fig. 2, the Fig. 5A has a projection portion 54 at a lower end of an outer side surface of each vertical portion 50, the projection portion 54 abutting against a relevant vertical frame 53 of a fixing plate 52.

[0046] In a substantially central portion of a horizontal portion 66 of the sliding scraper 48C, no recess portion 56 is formed as shown in Fig. 4A, and an arcuate bulge portion 57 formed at a substantial central portion of a horizontal frame 59 of a fixing plate 52 directly abuts against the horizontal portion 66. In this case, a gap 58B is formed between the horizontal frame 59 and the horizontal portion 66 of the sliding scraper 48C, except for a part of the stopper between the bulge portion 57 and the horizontal portion 66.

[0047] The fixing plate 52 also has a protrusion portion 61 at a lower end of each vertical frame 53, the protrusion portion 61 protruding inward, and a gap 60B is formed between the fixing plate 52 and each lower end surface of the sliding scraper 48C. The other components are similar to those of the above-described embodiment.

[0048] Since the gaps 58B, 60B are provided, effects similar to those of the present embodiment can be obtained. Since the protruding portions 54 abut the vertical frame 53, the opposing vertical portions 50, 50 of the sliding scraper 48C are pressed against the respective side surfaces of a guide rail 12, and thus, effects similar to those of the first embodiment described above can be obtained.

[0049] The Fig. 5B is similar to the sliding scraper 48D shown in Fig. 5A, except that a cutout portion 67 is provided at an upper end of an outer side surface of each vertical portion 50.

[0050] Although the present embodiment has been described with respect to a case where a bulge portion 57 is provided on a horizontal frame 59, the present invention is not limited to this case, and a bulge portion may be provided on an outer surface of a horizontal portion 55, 66. 3. Third embodiment

[0051] Although the above first and second embodiments have been described with respect to a case where a projection portion projecting toward a relevant vertical frame of a mounting plate is provided on each of the opposing vertical portions of a sliding scraper, the present invention is not limited to this case. For example, as shown in Fig. 6, a bulge portion 77 and projection portions 78 may be provided on a horizontal frame 76 and vertical frame 75 of a mounting plate 74, respectively. It is preferable that a length L6 in a vertical direction of the projection portions 78 be not more than 60%, preferably not more than 50%, but not less than 5%, preferably not less than 10%, of a length L7 of the vertical portions 72 of a sliding scraper 71.

[0052] Each of the vertical portion 72 and the horizontal portion 73 of the sliding scraper 71 is linear, that is, respective outer surfaces on the side of the fixing plate 74 of the opposite vertical portions 72, 72 and the horizontal portion 73 of the sliding scraper 71 are flat.

[0053] It should be noted that reference numeral 17 denotes a fixing screw hole provided for fixing a guide rail 12 by means of, for example, a screw.

[0054] In the case of the present embodiment, the opposed vertical portions 72, 72 of the sliding scraper 71 are pressed against side surfaces of the guide rail 12 by the projecting portions 78 of the fixing plate 74, and thus effects similar to those of the first embodiment described above can be obtained. 4. Fourth embodiment

[0055] Next, a mounting structure for a sliding scraper according to a fourth embodiment will be described. Components similar to those of the first to third embodiments are denoted by reference numerals similar to those of the first to third embodiments, and their descriptions are omitted for simplicity.

[0056] As in Fig.7, a sliding scraper 80 includes opposed vertical portions 81, 81 and a horizontal portion 83 connecting the opposed vertical portions 81, 81, and a groove portion 90 is formed therein, which is in sliding contact with a guide rail 12. Projection portions 84, 84 are provided on respective outer side surfaces of lower ends of the opposed vertical portions 81, 81, the projection portions 84, 84 abutting respective inner side surfaces of vertical frames 53 of a fixing plate 52. A sliding layer 86 is provided on an inner surface of the groove portion 90 and the lower end surfaces 87 of the opposed vertical portions 81, 81. A cutout portion 85 is provided on an upper end of an outer side surface of each of the opposed vertical portions 81, 81.

[0057] The sliding layer 86 of the sliding scraper 80 includes a flat surface parallel to a moving direction of a slider 14 and in contact with a surface of a guide rail 12 on the flat surface. A thickness of the sliding scraper 80 is not specifically limited, but may be 0.5 to 8.0 mm, preferably 1.0 to 5.0 mm.

[0058] Due to the protrusion portions 84 abutting against the respective vertical frames, the opposite vertical portions 81, 81 of the sliding scraper 80 are pressed against corresponding side surfaces of the guide rail 12, and thus effects similar to those of the first embodiment described above can be obtained.

[0059] In the case of the present embodiment, the sliding scraper 80 includes the sliding layer 86 which is in contact with the guide rail 12 on the flat surface, thereby making it possible to counteract the resistance to sliding on the surfaces of the guide rail 12 and thus enabling an improvement in the service life.

[0060] The sliding scraper 80 includes the sliding layer 86, which is also provided on the lower end surfaces 87 not in contact with the guide rail 12, and can prevent damage such as cracking of the vertical portions 81 due to, for example, foreign matter. 5. Modifications

[0061] The present invention is not limited to the above embodiments, and various improvements and modifications are possible within the scope of the claims. For example, the components of the first to fourth embodiments can be combined as appropriate. In particular, a sliding layer provided on inner surfaces of a groove portion and respective lower end surfaces of opposing vertical portions can be applied to the first to third embodiments.

[0062] Although only a single sliding scraper is attached to a mounting plate in the description of the first to third embodiments, a plurality of sliding scrapers may be stacked and attached to a mounting plate. List of reference symbols 10A linear guide device 12 guide rail 14 sliders 16, 52, 74 mounting plate 18, 53, 75 vertical frame 20, 59, 76 horizontal frame 22 rectangular U-shaped groove 24 bulge section 30A, 48A, 71, 80 sliding scraper 32, 41, 50, 62, 72, 81 vertical section 34, 55, 66, 73, 83 horizontal section 36, 90 groove section 38, 54, 64, 78, 84 projection section 40, 56 recess section 43, 44 projection section 57, 77 bulge section 86 Sliding layer 87 lower end face

Claims

[1] A mounting structure for a sliding scraper, the mounting structure comprising: a slider (14) which slides over a guide rail (12); a rectangular U-shaped mounting plate (16; 52; 74) attached to one end face of the slider (14) and having opposite vertical frames (18; 53; 75) and a horizontal frame (20; 59; 76) connecting the opposite vertical frames (18; 53; 75); and a sliding scraper (30A; 48A; 71; 80) fitted into a rectangular U-shaped groove of the mounting plate (16; 52; 74) and having opposite vertical sections (32; 41; 50; 62; 72; 81) and a horizontal section (34; 55; 66; 73; 83) connecting the opposite vertical sections (32; 41; 50; 62; 72; 81), and a groove section (36; 90) in sliding contact with the guide rail (12), wherein at least one open end portion of an inner side surface of each of the opposite vertical frames (18; 53; 75) of the fixing plate (16; 52; 74) or at least one end portion of an outer side surface of each of the opposite vertical portions of the sliding scraper (30A; 48A; 71; 80), the end portion facing the relevant opening portion, a projection portion (38; 54; 64; 78; 84) is provided, at which the relevant vertical frame (18; 53; 75) and the relevant vertical portion (32; 41; 50; 62; 72; 81) abut each other, characterized by ; that the sliding scraper (30A; 48A; 71; 80) is formed from an elastomer which includes a sliding layer on an inner surface of the groove portion (36; 90) into which a fabric material and the elastomer are integrated, wherein the sliding layer is formed by integrating the fabric material and the elastomer during molding so that the fabric material contacts and slides on the guide rail (12). [2] The fixing structure for a sliding scraper according to claim 1, wherein on an inner surface of the horizontal frame (20; 59; 76) of the fixing plate (16; 52; 74) or on an outer surface of the horizontal portion (34; 55; 66; 73; 83), the outer surface faces the horizontal frame (20; 59; 76), a bulge portion (24; 57) at which the horizontal frame (20; 59; 76) and the horizontal portion (34; 55; 66; 73; 83) abut against each other is provided. [3] The fixing structure for a sliding scraper according to claim 2, wherein a recessed portion (40; 56) is formed in the outer surface of the horizontal portion (34; 55) of the sliding scraper (30A; 30B; 48A; 48B), the outer surface facing the horizontal frame (20; 59) of the fixing plate (16; 52), and the bulge portion (24; 57) formed on the inner surface of the horizontal frame (20; 59) of the fixing plate (16; 52) abuts against the recessed portion (40; 56). [4] The fixing structure for a sliding scraper according to any one of claims 1 to 3, wherein the sliding layer (86) has a flat surface parallel to a moving direction of the slider (14). [5] A sliding scraper fixing structure according to any one of claims 1 to 4, wherein the sliding layer (86) is provided on the inner surface of the groove portion (36; 90) and the respective lower end surfaces of the opposed vertical portions (81) not in contact with the guide rail (12). [6] A linear guide device comprising a guide rail (12) and a slider (14) slidably straddling the guide rail (12), a sliding scraper (30A; 48A; 71; 80) having a groove portion (36; 90) in sliding contact with the guide rail (12) fitted in a rectangular U-shaped groove of a fixing plate (16; 52; 74) on one end surface in a sliding direction of the slider (14), the sliding scraper (30A; 48A; 71; 80) comprising the fixing structure according to any one of claims 1 to 5.

Images