[0001]The present invention relates to a sealing material and sealing mechanism for sealing around the rod-shaped body.
Background technique
[0002]
　Sealant for sealing around the rod-shaped body is known. Such sealing material is typically because it is configured by a rubber, a problem that the long-term use in high-load compression force creep deformation of the rubber occurs to the rod-shaped body is reduced, the sealing property is lowered was there.
[0003]
　Patent Document 1, a cylindrical sealing member to seal a rotating shaft of the image processing apparatus for handling a powder as a toner to prevent leakage of the powder is described. The seal member, a pile or fibers into a cylindrical shape, the outer peripheral side by restraining a metal support member, the hold-down about the shaft in a moderate compression force is balanced in sliding resistance and sealing property.
[0004]
　However, the cylindrical sealing member described above, the pile and fiber durability is low, in order to further the powder enters between the pile or fiber sealing property is lowered, can not be used for a long time under high load . The cylindrical sealing member described above, in order to obtain a compressive force to the shaft, it is necessary to tight tolerances set for the mounting hole (case) for attaching the cylindrical sealing member.
[0005]
　On the other hand, the applicant has a cylindrical sealing member, developed a sealing material described in Patent Document 2 above. Such sealing material, it is desirable that more excellent durability and sealing property.
CITATION
Patent Literature
[0006]
Patent Document 1: JP 2008-26728 JP
Patent Document 2: JP 2014-5865 JP
Summary of the Invention
Problems that the Invention is to Solve
[0007]
　An object of the present invention is to provide a sealing material and sealing mechanism which is excellent in durability and sealing property.
Means for Solving the Problems
[0008]
　The present inventors have, as a result of intensive research in order to solve the above problems, and have completed the present invention. Sealing material of the present invention has a through hole for slidably inserting the rod-shaped body, a cylindrical sliding layer made of a material fibers and elastic material are integrated, the outer peripheral surface of the sliding layer an elastic outer skin layer are laminated, the inside of the elastic outer skin layer in a state not in contact with the outer peripheral surface of the sliding layer, or the outer peripheral surface of the elastic outer skin layer, at least one round in the circumferential direction and a fiber tightening are continuously wound over.
　According to the sealing mechanism of the present invention, between the shaft is a rod-like body which is inserted the hole of the structure and into the hole, to seal by the sealing material.
Effect of the invention
[0009]
　Sealing material of the present invention has an effect of excellent durability and sealing property.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
[Figure 1] is a view showing a sealing member according to an embodiment of the present invention, X2 in (a) is a plan view, (b) X1 arrow side view of (a), (c) is (a) -X2 line is a cross-sectional view.
It is a schematic sectional view showing a seal mechanism according to an embodiment of the present invention; FIG.
3 is a plan view showing a sealing member according to another embodiment of the present invention.
DESCRIPTION OF THE INVENTION
[0011]

　Hereinafter, the sealing material according to an embodiment of the present invention will be described in detail with reference to FIG.
　As shown in FIG. 1 (a), the sealing member 1 of this embodiment is a member of the cylindrical (ring-shaped), as a constituent member, the sliding layer 2, the elastic skin layer 3 and the fiber 4 for tightening It is equipped with a. Hereafter, the respective components of the sealing member 1 of this embodiment will be described in order.
[0012]
　(Sliding layer)
　sliding layer 2 is a cylindrical member, more specifically a cylindrical member. Sliding layer 2 has an insertion hole 21. The insertion hole 21 is a portion for slidably inserting the rod-shaped body. More specifically, the rod-shaped body of the present embodiment is inserted into the insertion hole 21, as shown in FIG. 2 to be described later, a shaft 101 of cylindrical shape. Shaft 101 is a member that the relative movement such as reciprocating or rotating relative to the structure 102. Insertion holes 21 of the present embodiment, when moved relative to the structure 102 in a state where the shaft 101 is inserted into the insertion hole 21, insertion hole 21 and the shaft 101 are configured to slide relative to each other.
[0013]
　Sliding layer 2 of the present embodiment having the above structure is made of a material fibers and elastic material are integrated. According to such a configuration, it is possible to reduce the sliding resistance against the shaft 101, can exhibit excellent durability to sliding friction.
[0014]
　Fibers constituting the sliding layer 2 is intended primarily shaft 101 and the sliding contact, and serves as a main factor to decrease the sliding resistance against the shaft 101. Such fibers, for example, nylon fibers, polyester fibers, Teflon fibers, liquid crystal polymer fibers, cotton, carbon fiber, glass fiber, aramide fiber. These fibers illustrated may be used alone or in combination.
[0015]
　The form of the fibers constituting the sliding layer 2, for example, woven fabrics, nonwoven fabrics, and a cloth material such as knitted fabric. Woven fabric, including the canvas. Basis weight of the fabric material is generally, 20 ~ 200 g / m 2 but is not limited thereto.
[0016]
　When the fiber is in the form of cloth material, as fabric material is in sliding contact with the shaft 101, preferably integrated with the fabric material and elastomeric material. Specifically, it is preferable to impregnate an elastic material to the fabric material. Thereby, the elastic material between the fibers constituting the cloth material enters, it is possible to reinforce the fabric material as a result. Since the abrasion due to rubbing of the fiber material to each other is reduced, thereby improving the wear resistance. When impregnating the elastic material to the fabric material, in performing the impregnation process smoothly, preferably in liquid form an elastic material is dissolved or solvents.
[0017]
　Form of fibers, other fabric material described above, for example, may be a short fiber. If the form of fibers of short fiber is preferably integrally molded crowded mixing short fibers in the elastic material.
[0018]
　Elastic material constituting the sliding layer 2 is intended mainly to improve the durability of the above fibers. As the elastic material, e.g., rubber, elastomers, and the like. The rubber, for example, natural rubber, nitrile rubber, chloroprene rubber, Hypalon, polybutadiene rubber, ethylene - propylene rubber (EPM), ethylene - propylene - diene terpolymers (EPDM), hydrogenated acrylonitrile-butadiene rubber (H- NBR), silicone rubber, fluorine rubber, acrylic rubber, styrene-butadiene rubber, and chlorinated polyethylene rubber. The elastomer include millable urethane, thermoset polyurethane, thermoplastic polyurethane, and thermoplastic polyesters. It illustrated These elastic materials may be used alone or in combination.
[0019]
　The elastic material constituting the sliding layer 2, it is possible to add an additive. As the additive, for example, vulcanizing aids, and the like reinforcing agent. As the vulcanizing agent, for example, organic peroxides such as dicumyl peroxide, organic sulfur compounds, and metal oxides. As the vulcanization accelerator auxiliary agent, for example, fatty acids such as stearic acid, and metal oxides. As the reinforcing agent, for example, carbon black, white carbon.
[0020]
　Other additives than those described above, for example, anti-aging agents, fillers, plasticizers, adhesives, and the like can also be added solid lubricant to the elastic material. Exemplified among these additives, the addition of a solid lubricant in an elastic material, it is possible to reduce the sliding resistance. As solid lubricant, such as graphite, silicone oil, fluorine powder, and the like molybdenum disulfide.
[0021]
　(Elastic outer skin layer)
　elastic skin layer 3, as shown in FIG. 1 (b), it is a member that is laminated on the outer peripheral surface 22 of the sliding layer 2 described above. Elastic skin layer 3 is a member that is configured by an elastic material, when the shaft 101 moves relative to the structure 102, to stabilize the shape of the sliding layer 2 by following this, the sealing property functions as a member to maintain.
[0022]
　The elastic material constituting the elastic outer skin layer 3, the same elastic material and the like as exemplified in the sliding layer 2 described above. The elastic material constituting the elastic outer skin layer 3, it is possible to add an additive. As the additive, for example, vulcanizing aids, reinforcing agents, anti-aging agents, fillers, plasticizers, and the like adhesive. Exemplified among these additives, for vulcanizing auxiliaries and reinforcing agents, it can be exemplified same as those exemplified for the sliding layer 2 described above.
[0023]
　In the present embodiment, as shown in FIG. 1 (c), the radial thickness T3 of the elastic skin layer 3 is larger than the thickness T2 in the radial direction of the sliding layer 2. According to such a configuration, it is possible to improve the effect of maintaining the above-mentioned sealing property.
[0024]
　(Fiber clamping)
　fibers tightening 4, the compression force to the shaft 101 of the sealing member 1 is a member to increase the clamping force to the shaft 101 in other words. In this embodiment, the fiber tightening 4, are wound around the inside of the elastic skin layer 3 continuously along the circumferential direction from the end portion 4a. More specifically, by winding fiber tightening 4, continuously for at least one round along the inside of the elastic skin layer 3 in the circumferential direction in a state not in contact with the outer peripheral surface 22 of the sliding layer 2 . According to such a configuration, it is possible to increase the clamping force of the seal member 1, resulting in excellent durability and can exert a sealing property, it is possible to use a long time in a high load. Furthermore, in the present embodiment, since the high tightening force due to the structure of the sealing member 1 is generated, to be a tight tolerance settings against the mounting member such as the above-described mounting hole as in the conventional attachment of the sealing member without, flexible design is possible.
[0025]
　The fibers 4 tightening include the same fibers as those exemplified for the sliding layer 2 described above. In particular, the fibers tightening 4, preferably at least one selected from carbon fibers, glass fibers and aramid fibers. Both carbon fibers, glass fibers and aramid fibers because of their non-stretchable, it is possible to increase the clamping force of the seal member 1.
[0026]
　Fiber 4 for fastening of this embodiment, in view of enhancing the clamping force of the seal member 1 has the following configuration. Fiber 4 the tightening of the present embodiment is a filamentous. In the present embodiment, the filamentous by bundling fibers 4 with a plurality of fastening. In this embodiment, the fiber tightening 4 are wound over a plurality laps are wound fibers tightening 4 spirally. Further, in this embodiment, the fibers 4, 4 to each other for with adjacent clamping are in contact with each other. According to these configurations, can be wound densely the fibers 4 fastening inside of the elastic skin layer 3, it is possible to increase the clamping force of the seal member 1 as a result.
[0027]
　The sealing member 1 of this embodiment having the above-described configuration, for example, can be manufactured as follows. First, obtain a first layer constituting the sliding layer 2 a cloth material elastic material sticks have been impregnated with the same shape as the shaft 101 is wound at least one layer. Next, obtain a second layer by winding at least one layer of elastic material forming the elastic outer skin layer 3 on the outer peripheral surface of the first layer. Then, after the wound at least one turn continuously fibers 4 fastening along the circumferential direction so as not to contact with the outer peripheral surface of the first layer on the outer peripheral surface of the second layer, further the elastic outer skin layer 3 obtaining a third layer of elastic material is wound around at least one layer. Finally, the first layer, second layer and third layer are housed between the moldable upper and lower molds a tubular laminate which are laminated in this order on the shape of the sealing member 1, heating the layers under pressure after adhering removed from the mold, to obtain a sealing material 1 is cut to the desired thickness.
[0028]

　Next, the sealing mechanism according to an embodiment of the present invention, taking the case of using the sealing member 1 described above will be described in detail with reference to FIG.
[0029]
　As shown in FIG. 2, the seal mechanism 100 of the present embodiment, the seal between the shaft 101 is a rod-like body which is inserted into the hole portion 103 and the hole portion 103 of the structure 102, the sealing member 1 described above It has the configurations that was. According to this structure, a seal between the shaft 101 which sealing member 1 exhibits excellent durability and sealing property is inserted into the hole portion 103 and the hole portion 103 of the structure 102. Therefore, it is possible foreign matter 110 such as powder adhering to the shaft 101 can be suppressed for a long time from entering the lumen 103. Hereinafter, the configuration of the seal mechanism 100 of the present embodiment will be described specifically.
[0030]
　Structure 102 in the sealing mechanism 100 has a concave sealing member accommodation portion 104 which is located near the opening of the hole 103. Sealing material accommodation unit 104 is slightly smaller than the diameter of the sealing member 1, and has an inner diameter larger than the inner diameter of the hole 103. Hole 103 has an inner diameter larger than the diameter of the shaft 101. According to these configurations, housing the shaft 101 after insertion into the hole portion 103 of the structure 102 is inserted into the insertion hole 21 of the sealing member 1, in pressed-in condition the sealing member 1 to the seal member housing section 104 it becomes possible. It is also possible to insert previously the sealing member 1 after accommodated in pressed state the sealing material accommodation portion 104, the shaft 101 through the insertion hole 21 of the sealing member 1 in the hole portion 103 of the structure 102.
[0031]
　The sealing member 1 after accommodated in the sealing member accommodation portion 104 to attach the pressing member 105 to the edge around the opening portion of the sealing member accommodation portion 104. This allows the sealant 1 can be inhibited from coming off from the sealing member accommodation portion 104.
[0032]
　Foreign matter 110 such as powder adhering to the shaft 101 can be removed by reciprocating the shaft 101 against the structure 102. If reciprocating the shaft 101 against the structure 102, the foreign substances 110 that are adhered to the shaft 101 can be moved to the elastic outer skin layer 3 side of the seal member 1, to remove foreign matter 110 from the shaft 101 as a result be able to.
[0033]
　In the present embodiment, the front surface of the sealing member 1 foreign matter 110 is located on the side of intrusion, are configured perpendicular to the shaft 101, the front surface of the sealing member 1, the outer peripheral surface of the sealing member 1 it may be inclined structure away from the hole 103 toward the inner peripheral surface side from. According to such a configuration, it is possible to remove the foreign matter 110 efficiently from the shaft 101.
[0034]
　Above the sealing member 1 and the seal mechanism 100 of the present embodiment can be suitably used for drive handling such powders or liquid. Such drive devices, for example, production dislike car, motorbike, bicycle, vehicle amusement, motor boats, railway vehicles, ships, aircraft, such as spacecraft vehicles, various machinery, machine tools, robots, vibration equipment, image processing apparatus, a semiconductor manufacturing apparatus, industrial machinery such as a chip mounter, the like linearly moving member such as a ball screw and the like, but is not limited thereto.
[0035]
　While there has been illustrated the preferred embodiments of the present invention, the present invention is not limited to the embodiments described above, it is needless to say that can be any one as long as not departing from the gist of the present invention.
[0036]
　For example, in the embodiment described above, continuously wound for at least one round along the inside of the elastic outer skin layer 3 in a state not in contact with the fibers for tightening 4 on the outer peripheral surface 22 of the sliding layer 2 in the circumferential direction It has, but instead of this, the fibers tightening 4 can be wound as shown in FIG. In the sealing member 10 shown in FIG. 3, it is wound continuously over at least one turn along the fiber tightening 4 in the circumferential direction of the outer peripheral surface 31 of the elastic outer skin layer 3. Even in such a configuration, similarly to the sealing member 1 according to the embodiment described above, it is possible to increase the clamping force of the seal member 10.
　The other configuration is the same as the sealing member 1 according to the embodiment described above, the description thereof is omitted.
[0037]
　In the present embodiment described above, the fibers tightening 4 is a filamentous, instead of this, it is possible to make the fiber tightening 4 other shapes. Other shapes, for example, the shapes and the like braided fibers tightening 4.
[0038]
　In the present embodiment described above, the fibers 4, 4 to each other for with adjacent clamping is, although in contact with each other, instead of this, the fibers 4, 4 to each other for with adjacent clamping is to position so as not to contact with each other be able to.
[0039]
　In the present embodiment described above, the rod-shaped body is a shaft 101 of a cylindrical, rod-like body is not limited to the cylindrical shaft 101. For the shape of the shaft 101, is not limited to a cylindrical shape, it can be other shapes. Other shapes include, for example, polygonal column.
DESCRIPTION OF SYMBOLS
[0040]
1,10 sealant
2 sliding layer
21 through holes
22 the outer circumferential surface
3 the elastic outer skin layer
31 the outer circumferential surface
4 for fastening fibers
4a end
100 sealing mechanism
101 shaft
102 structure
103 hole
104 sealing material accommodation unit
105 pressing member
110 foreign matter

claims

[Claim 1]The rod-shaped body has a slidably inserted to the insertion hole, fibers and a tubular sliding layer of resilient material are integrated material,
　elastic skin layer laminated on the outer peripheral surface of the sliding layer When,
　the inside of the elastic outer skin layer in a state not in contact with the outer peripheral surface of the sliding layer, or the outer peripheral surface of the elastic outer skin layer, is continuously wound over at least one turn along the circumferential direction comprising a fiber tightening, the sealant.
[Claim 2]
　Fibers with respect to the tightening is carbon fiber, at least one selected from glass fibers and aramid fibers, the sealing material according to claim 1.
[Claim 3]
　Fibers with respect to the tightening is a filamentous, sealing material according to claim 1 or 2.
[Claim 4]
　Fibers with respect to the tightening, is wound over a plurality laps sealing material according to any one of claims 1-3.
[Claim 5]
　Fibers with respect to the tightening, are spirally wound, sealing material according to claim 4.
[Claim 6]
　Fibers for with the adjacent clamping are in contact with each other, the sealing material according to claim 4 or 5.
[Claim 7]
It said resilient radial thickness of the outer skin layer, the sealing material according to any one of the greater claim than the radial thickness of the sliding layer 1-6.
[8.]
　Between the rod-like body which is inserted into the hole and in the hole of the structure, are sealed by sealing material according to any one of claims 1 to 7, the sealing mechanism.