JP5390574B2 - Bearing device - Google Patents

Description

  The present invention relates to a support device for supporting various structures such as buildings and bridges.

  2. Description of the Related Art A bearing device for a structure such as a building or a bridge includes a rubber bearing in which rubber plates and iron plates are alternately stacked and bonded together by vulcanization bonding (see Patent Document 1). In the rubber bearing, by constraining the displacement of the rubber, a device for improving the vertical spring rigidity and a device for improving the rotation follow-up performance are made. For example, in rubber bearings, rubber plates and iron plates are alternately laminated and vulcanized and bonded to reduce the fluidity of rubber and increase the rigidity of the vertical spring.

  Also, in the sealed rubber bearing, the rubber plate is placed in the metal pot that serves as the lower shell, and the piston-shaped upper flange is placed on the rubber plate so that the rubber plate behaves in an incompressible fluid. It is comprised so that rotation tracking performance may be acquired by being restrained (refer patent document 2). This sealed rubber bearing is handled as a metal bearing because it does not have vertical flexibility.

  Furthermore, in so-called compact bearings, in order to support a large vertical load, a concave portion is provided on each of the opposing surfaces of the upper and lower collars, and a rubber layer is disposed in each concave portion. Is prevented from bulging outward in the radial direction due to bending deformation, thereby improving the vertical spring rigidity (see Patent Document 3).

  However, in any of the support devices disclosed in Patent Documents, a gap is formed between the upper and lower eyelids, and there is a possibility that foreign matters such as moisture and dust may enter inside from the gap.

JP 2000-1820 A JP 2000-178922 A JP 2009-13773 A

  It is an object of the present invention to provide a bearing device having excellent hermeticity that prevents foreign substances such as moisture and dust from entering inside while realizing high load bearing and achieving good rotation followability. Objective.

  The bearing device according to the present invention includes a first rigid body disposed on one of the first structure and the second structure, and a second rigid body disposed on the other of the first structure and the second structure. An elastic body disposed between the first rigid body and the second rigid body, a restraining body surrounding the elastic body, a distal end portion of the restraining body, any structure, or any rigid body, And an elastic sealing body that is elastic and / or flexible and seals the gap, so that foreign substances such as moisture and dust can enter inside by the elastic sealing body. Can be prevented.

  Further, the restraining body has a function of restraining elastic deformation of the elastic body and / or a function of maintaining a substantially sealed state of the elastic body and / or a function of restraining relative displacement between the first rigid body and the second rigid body. It is characterized by. Furthermore, the first rigid body and the second rigid body are provided with a core material having an uplift prevention portion and a horizontal displacement prevention portion, so that when the uplift force is applied to the first rigid body, for example, The first rigid body and the second rigid body can be prevented from separating from each other, and the first rigid body and the second rigid body can be prevented from excessively changing in the horizontal direction.

  Furthermore, by forming a flange-shaped lifting prevention piece at the tip of the restraint, for example, when lifting force is applied to the first rigid body, the first rigid body and the second rigid body are prevented from separating. In addition, the first rigid body and the second rigid body can be prevented from excessively changing in the horizontal direction.

  Furthermore, by disposing the elastic sealing body in the gap between the lifting prevention piece and the first rigid body or the second rigid body, foreign matter such as moisture and dust can be prevented from entering the inside of the support device. The sealing property of the support device can be ensured.

Furthermore, by arranging the elastic sealing body in the gap between the lifting prevention piece and the core material provided on either the first rigid body or the second rigid body , moisture or dust is placed inside the support device. It is possible to prevent foreign substances such as the like from entering, and to secure the sealing performance of the support device.

  Furthermore, if the elastic sealing body is an elastic body capable of supporting a load, the support device according to the present invention can support a high load with a small support area while realizing a reduction in size as a whole.

  Furthermore, convex portions or concave portions may be formed on the side surfaces of the elastic body and / or the constraining surface of the constraining body. Furthermore, if an input is made more than a predetermined value, the elastic body is elastically deformed so as to reduce the volume of the gap created by the convex portion and the concave portion, and the deformed elastic body is in contact with and / or pressed against the restraining body. Then, the deformation of the elastic body may be constrained. Further, the elastic body is surrounded by the first rigid body, the second rigid body, and the restraint body so as to be in a semi-sealed state, and changes to a more advanced sealed state as the load on the elastic body increases. Anyway.

  In the bearing device according to the present invention, since the elastic sealing body is provided at the tip of the restraining body, it is possible to prevent foreign matters such as moisture and dust from entering inside. Therefore, the bearing device according to the present invention realizes a high-load bearing and achieves a good rotational follow-up property, while preventing foreign matter such as moisture and dust from entering inside and ensuring excellent sealing performance. I can do it. Therefore, the bearing device according to the present invention has excellent waterproof properties and rust preventive properties and can extend the life. Furthermore, in the support device according to the present invention, by using the elastic sealing body as a load-supporting elastic body, the elastic sealing body becomes a support body in the same manner as the elastic body, and the load can be supported by the elastic sealing body. Support can be realized.

It is sectional drawing which shows the normal use condition of the support apparatus to which this invention is applied. It is a perspective view of an elastic body. FIG. 6 is a cross-sectional view of the support device before installation (before a load is applied) between the upper structure and the lower structure, in which the convex portion on the side surface of the elastic body and the restraint surface of the restraint body are not in contact with each other. Indicates the state. It is sectional drawing of the support apparatus before installing (before load is applied) between an upper structure and a lower structure, Comprising: Between the convex part of the elastic body side surface and the restraint surface of a restraint body contact | abutted Indicates the state. (A)-(E) is sectional drawing which shows the modification of an elastic sealing body. It is sectional drawing which shows the other modification of an elastic sealing body. It is a characteristic graph which shows the relationship between the amount of displacements of a perpendicular direction, and a vertical load. It is sectional drawing of the support apparatus using the laminated elastic body which provided the recessed part in the position of the reinforcement board. It is sectional drawing of the support apparatus using the laminated elastic body which provided the convex part in the position of the reinforcement board. It is sectional drawing of the support apparatus which the core material penetrated the upper collar. It is a modification of FIG. 10, and is a cross-sectional view of a support device in which a restraint is fixed to the lower arm. It is sectional drawing which shows the modification of the support apparatus which is not penetrated in any of upper / lower cores. It is sectional drawing of the support apparatus which arrange | positioned the elastic sealing body in the arrangement | positioning recessed part provided in the lifting prevention piece. It is sectional drawing of the support apparatus which arrange | positioned the elastic sealing body in the taper part provided in the lifting prevention piece. It is sectional drawing of the support apparatus which has arrange | positioned the elastic sealing body in the clearance gap between a lifting prevention piece and a core material. (A)-(C) is sectional drawing which shows the modification of an elastic sealing body. It is sectional drawing of the support apparatus of one Example. It is sectional drawing of the support apparatus which provided the convex part or the recessed part in the restraint surface of a restraint body. It is a perspective view which shows the modification of an elastic body.

  Hereinafter, a support device according to the present invention will be described with reference to the drawings. Hereinafter, the support device will be described in the following order.

1. 1. Explanation of bearing device 2. Explanation of elastic body and restraint body 3. Description of elastic sealing body 4. Explanation of operation of bearing device 5. Explanation of laminated elastic body Modification 1 of bearing device
7). Modification 2 of bearing device
8). Modification 3 of bearing device
9. Modification 4 of bearing device
10. Modification 5 of bearing device
11. Other variations

[1. Description of bearing device]
As shown in FIG. 1, a bearing device 10 is mounted between an upper structure 1 such as a bridge girder and a lower structure 2 such as a bridge pier or an abutment to support various loads such as a horizontal load, a vertical load, and a rotational load. At the same time, it is a bridge support device that supports and absorbs and disperses vibrations, vibrations and stresses caused by earthquakes, winds, dynamic or static traffic loads, and the like. In the support device 10, an elastic body 13 serving as a support body is interposed between an upper collar 11 serving as a first rigid body and a lower collar 12 serving as a second rigid body. The elastic body 13 is surrounded by a restraining body 16 fixed to the upper collar 11 or the lower collar 12 (here, the upper collar 11). Furthermore, the support device 10 is configured such that foreign matter such as moisture or dust enters inside between the distal end portion 16d of the restraint 16 and the upper structure 1 or the lower structure 2 (here, the lower structure 2). An elastic sealing body 20a is provided to prevent the above.

  The upper arm 11 is preferably made of a rigid material such as metal, ceramics, or a hard resin or a reinforced resin such as FRP, but is not necessarily limited to a rigid material. It can also be configured by a material combining the above. The upper collar 11 made of various materials can be set to an appropriate shape such as a substantially polygonal shape, a substantially circular shape, a substantially oval diameter, or a substantially elliptical shape in plan view. It is advantageous in terms of replacement from the top or construction. In addition, you may comprise the upper collar 11 so that an outer surface may be entirely covered with coating layers, such as an elastic body, and a weather resistance and a rust prevention effect may be acquired.

  As a means for fixing the upper collar 11 to the upper structure 1, the upper collar 11 may be directly fixed to the upper structure 1 by using fastening means such as bolts and nuts. The upper plate 11 is indirectly fixed to the upper structure 1 using the upper plate 3 having a plate shape larger than 11. The method for fixing the upper collar 11 to the upper structure 1 is not limited to these examples.

  When used as a movable support device, the sliding member 4 is disposed above the upper rod 11, for example, between the upper rod 11 and the upper plate 3, so that the upper structure 1 and the support device 10 are relative to each other. You may fix so that displacement is possible. As the sliding member 4, for example, a plate having a surface with a low coefficient of friction such as polytetrafluoroethylene (PTFE) which is a kind of fluorocarbon resin is fixed to the upper surface of the upper collar 11, or It can be configured by being fixed to the upper structure 1 or the lower surface on the attachment means side fixed to the upper structure 1.

  The lower arm 12 is preferably composed of a rigid material such as metal, ceramics, or a reinforced resin such as a hard resin or FRP, but is not necessarily limited to a rigid material. It can also be formed of a combination of a rigid material and an elastic material. The lower bar 12 made of various materials can be set to an appropriate shape such as a substantially polygonal shape, a substantially circular shape, a substantially oval diameter, or a substantially oval shape in plan view. It is advantageous in terms of top, construction, and replacement. The planar shape or the like of the lower eyelid 12 does not necessarily match the upper eyelid 11, but the size of each part, the shape and position of the convex portion and the recessed portion, etc. match the setting of the lower eyelid 12 and the setting of the upper eyelid 11. It is necessary to let In addition, the lower eyelid 12 can also be comprised so that an outer surface may be entirely covered with coating layers, such as an elastic body, and a weather resistance and a rust prevention effect may be acquired.

  As a means for fixing the lower rod 12 to the lower structure 2, the lower rod 12 may be directly fixed to the lower structure 2 using fastening means such as bolts and nuts. The lower collar 12 is indirectly fixed to the lower structure 2 using lower fixing means such as the lower plate 5 having a plate shape larger than 12. The method for fixing the lower rod 12 to the lower structure 2 is not limited to these examples.

  When used as a movable bearing device, a sliding member 6 is disposed below the lower rod 12, for example, between the lower plate 5 and the lower rod 12, so that the lower structure 2 and the bearing device 10 are relative to each other. You may fix so that displacement is possible. As the sliding member 6, for example, a plate having a low coefficient of friction surface such as PTFE is fixed to the lower surface of the lower rod 12, or the lower structure 2 or the lower structure 2 is fixed. It is possible to fix to the upper surface on the means side.

  The direct or indirect fixing of the upper rod 11 and the lower rod 12 is preferably a detachable method, and fastening with bolts, nuts, etc. is an example.

[2. Explanation of elastic body and restraint body]
As the elastic body 13, natural rubber, synthetic rubber, thermoplastic elastomer or thermosetting elastomer can be used, and among these, natural rubber is preferably used as a main component. Specific elastomer components include, for example, natural rubber (NR), polyisoprene rubber (IR), polybutadiene rubber (BR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), ethylene-propylene rubber, butyl rubber ( IIR), halogenated butyl rubber (brominated, chlorinated, etc.), acrylic rubber, polyurethane, silicone rubber, fluorinated rubber, polysulfide rubber, hyperon, ethylene vinyl acetate rubber, epichlorohydrin rubber, ethylene-methyl acrylate copolymer, styrene series Elastomer, urethane elastomer, polyolefin elastomer, acrylonitrile-butadiene rubber (NBR), styrene-isoprene-styrene block copolymer (SIS), epoxidized natural rubber, trans-polyisoprene, norbornene Ring polymer (polynorbornene), styrene-butadiene rubber (SBR), high styrene resin, a rubber such as isoprene rubber alone, or may be used in combination of two or more.

  The elastic body 13 shown in FIG. 2 has, for example, a cylindrical shape and one (single layer) elastic layer in which a rigid reinforcing plate such as an iron plate is not provided. The elastic body 13 is provided with a convex portion 14 and a concave portion 15 on the side surface in the circumferential direction. In the example shown in FIG. 2, a convex portion 14 that is continuous in the circumferential direction is provided at a substantially central portion in the thickness direction so as to form a wave shape in the thickness direction orthogonal to the circumferential direction. Concave portions 15 and 15 that are continuous in the circumferential direction are provided on the side, and convex portions 14 and 14 that are continuous in the circumferential direction are provided at the upper and lower ends in the thickness direction.

  The elastic body 13 may be configured such that the linear convex portions 14 are provided at equal intervals in the thickness direction along the circumferential direction of the side surface. Furthermore, the convex portion 14 may be provided intermittently with various intervals in the circumferential direction. Further, the protrusions 14 may not be evenly spaced or evenly spaced in the thickness direction. Further, the convex portion 14 of the elastic body 13 is a projection, and a region where the convex portion 14 is not provided may be the concave portion 15. Further, the projecting convex portions 14 may be provided regularly, and may have various sizes and projecting directions. That is, the shape, the number, the interval, and the like of the convex portion 14 and the concave portion 15 of the elastic body 13 are not particularly limited.

  In the example shown in FIG. 1, the elastic body 13 as described above is disposed on the lower collar 12 and supported by the lower collar 12. The elastic body 13 may be bonded to the upper collar 11 and the lower collar 12 to increase the bearing pressure. However, by not bonding, the elastic follower 13 can also achieve good rotation followability.

  Moreover, the elastic body 13 is surrounded by the restraint body 16, as shown in FIG. The restraining body 16 is a cylindrical body having an inner diameter slightly larger than the outer diameter of the elastic body 13, and is fixed to either the upper collar 11 or the lower collar 12, or the outer periphery of the upper collar 11 in FIG. 1. For example, the upper rod 11 and the restraining body 16 may be coupled using a fixing means 16b such as a bolt / nut. As the fixing means 16b, either one of the upper collar 11 and the restraining body 16 is provided with a male screw, and the other is provided with a female screw. It can also be performed by a known bonding method. The tip 16d on the lower collar 12 side of the restraint 16 is located outside the outer periphery of the lower collar 12, and is not fixed. As a result, when the vertical load is input, the upper rod 11 can move vertically downward while compressing the elastic body 13. That is, the elastic body 13 in which the lower eyelid 12 is disposed between the upper eyelid 11 and the lower eyelid 12 because the tip 16 d on the lower eyelid 12 side of the restraining body 16 is located outside the outer peripheral portion of the lower eyelid 12. The function which suppresses the shear deformation of this and the role of the piston which restrains the elastic body 13 in a substantially sealed state and increases the bearing pressure are realized. Thus, the elastic body 13 supported by the lower collar 12 is surrounded by the upper collar 11 on the upper surface and the restraining body 16 on the side surface, and is disposed in a semi-sealed space. The bearing device 10 is a semi-sealed rubber bearing, and can support a high load with a small bearing area.

  Here, the size relationship between the elastic body 13 and the restraint body 16 will be described. In the example of FIG. 1, the support device 10 is installed between the upper structure 1 and the lower structure 2, and On the other hand, in a state where the elastic body 13 is deformed by the load of the upper structure 1 (a state where a dead load is applied), the convex portion 14 on the side surface of the elastic body 13 becomes a restraint surface 16a on the inner peripheral surface of the restraint body 16. It is in a contact state. That is, as shown in FIG. 3, before being installed between the upper structure 1 and the lower structure 2, the convex portion 14 on the side surface of the elastic body 13 is connected to the restraining surface 16 a on the inner peripheral surface of the restraining body 16. Is in a non-contact state between the upper structure 1 and the lower structure 2, the elastic body 13 is caused by the dead load of the upper structure 1 when installed between the upper structure 1 and the lower structure 2. The side surface convex portion 14 is in contact with the restraining surface 16 a on the inner peripheral surface of the restraining body 16. When a dead load is loaded, the convex portion 14 on the side surface of the elastic body 13 is not in contact with the restraining surface 16a on the inner peripheral surface of the restraining body 16, and a high load exceeding the normal use range (for example, a traffic load of a large vehicle or the like). , The convex portion 14 on the side surface of the elastic body 13 abuts on the constraining surface 16a on the inner peripheral surface of the constraining body 16, and the convex portion 14 on the constraining surface 16a by the input of a further high load. In addition, the bulging and deforming portion of the recess 15 may be pressed.

  Further, as shown in FIG. 4, the convex portion 14 on the side surface of the elastic body 13 is formed on the restraining surface 16 a on the inner peripheral surface of the restraining body 16 before being installed between the upper structure 1 and the lower structure 2. It may be in a contact state. In this case, when the elastic body 13 is disposed in the restraining body 16, the elastic body 13 in the restraining body 16 can be accurately positioned. It should be noted that a minute gap having a tolerance may exist between the restraining surface 16 a of the restraining body 16 and the elastic body 13.

[3. Explanation of elastic sealing body]
As shown in FIG. 1, the elastic sealing body 20a is a ring-shaped packing made of an elastic material having elastic characteristics such as a rubber material or a synthetic resin material. In FIG. And the lower plate 5. Further, the elastic sealing body 20a has a rectangular cross section, for example. The material constituting the elastic sealing body 20 is not necessarily required to be elastic, and may be configured so as to be able to follow the displacement of the restraint body 16 while maintaining sealing properties such as watertightness. It is also possible to use a flexible material or a metal material formed in a bellows shape. Further, the elastic sealing body 20 a having a rectangular cross section has a length in the thickness direction of the restraint body 16 when the support device 10 is installed between the upper structure 1 and the lower structure 2. It is longer than the gap between the tip portion 16d and the lower plate 5. Thereby, the elastic sealing body 20a is disposed in a gap between the distal end portion 16d of the restraining body 16 and the lower plate 5 in a state of being bent inward or outward (inward in FIG. 1). The elastic sealing body 20a having such a shape is attached to the distal end portion 16d of the restraining body 16 and the lower plate 5 by bonding or the like.

  In this manner, the elastic sealing body 20a closes the gap between the distal end portion 16d of the restraining body 16 and the lower plate 5. Accordingly, the elastic sealing body 20a can prevent foreign matter such as moisture and dust from entering the inside of the support device 10, and can ensure the sealing performance of the support device 10. Further, since the elastic sealing body 20a is formed of an elastic material or the like, even if the restraining body 16 approaches or separates from the lower plate 5 in the vertical displacement direction due to a vertical load, the elastic sealing body 20a can expand and contract following. . Therefore, the elastic sealing body 20a prevents foreign matter such as moisture and dust from entering the inside of the support device 10 even if the restraining body 16 approaches or separates from the lower plate 5 in the vertical displacement direction due to a vertical load. The sealing of the support device 10 can be ensured. That is, the elastic sealing body 20a has a sealing function.

  The elastic sealing body 20a has a length in the thickness direction between the distal end portion 16d of the restraint body 16 and the lower structure 2 when the lower collar 12 is directly fixed to the lower structure 2. It is provided with substantially the same length as the gap, and is attached to the distal end portion 16d of the restraint 16 and the lower structure 2 by adhesion or the like. Thereby, the elastic sealing body 20a closes the gap between the distal end portion 16d of the restraint body 16 and the lower structure 2 even when the lower collar 12 is directly fixed to the lower structure 2. I can do it. Accordingly, the elastic sealing body 20a can prevent foreign matter such as moisture and dust from entering the inside of the support device 10, and can ensure the sealing performance of the support device 10.

  Further, the elastic sealing body 20a is not limited to being attached by adhesion, and may be attached by a conventionally known fixing method such as a fixing means such as a bolt and a nut.

  Furthermore, the elastic sealing body 20a can expand and contract even if the restraint 16 approaches or moves away from the lower structure 2 in the vertical displacement direction due to a vertical load, and further, the sealing performance of the support device 10 is improved. Any thing can be used as long as it can be secured.

  For example, as shown in FIG. 5A, the elastic sealing body 20a has a length in the thickness direction, and is a restraint body when the support device 10 is installed between the upper structure 1 and the lower structure 2. 16 may be provided with a length that is substantially the same as or slightly shorter than the gap between the tip 16 d of the 16 and the lower plate 5. Further, the elastic sealing body 20a may have a circular cross section as shown in FIG. Further, as shown in FIG. 5C, the elastic sealing body 20a may have a hollow circular shape (cylindrical shape) in cross section. Further, the elastic sealing body 20a may have a bellows shape as shown in FIG.

  Further, as shown in FIG. 5E, the circular or hollow circular elastic sealing body 20a may be disposed in the disposition recess 16e provided in the distal end portion 16d of the restraint body 16. .

  Furthermore, the bellows-like elastic sealing body 20a may be formed of a thin metal. Even if the bellows-like elastic sealing body 20a is formed of a thin metal, the shape of the bellows-like elastic sealing body 20a expands and contracts even when the restraint 16 approaches or moves away from the lower structure 2 in the vertical displacement direction due to a vertical load. The sealing of the support device 10 can be ensured.

  Furthermore, the elastic sealing body 20a may be attached to the distal end portion 16d side of the outer peripheral portion of the restraint body 16 so as to close the gap between the distal end portion 16d of the restraint body 16 and the lower structure 2 or the lower plate 5. .

  Further, the elastic sealing body 20a may be attached between the distal end portion 16d of the restraint body 16 and the outer peripheral portion of the lower collar 12.

  Further, as shown in FIG. 6, the elastic sealing body 20a is composed of a ring member made of the same material as or different from the elastic body 13 among the materials of the elastic body 13 described above, so that the load can be supported. May be. That is, the elastic sealing body 20a becomes a support body similarly to the elastic body 13, and may have a load support function in addition to the sealing function.

[4. Explanation of operation of bearing device]
In the support device 10 as described above, when installed between the upper structure 1 and the lower structure 2, as shown in FIG. 1, the elastic body 13 has a load in a normal use range (for example, a dead load or (Dead load + live load during vehicle travel) is compressed, and the convex portion 14 of the elastic body 13 is positioned close to or in contact with the restraining surface 16a of the restraining body 16 surrounding the elastic body 13. In the support device 10, the elastic body 13 is elastically deformed according to the magnitude of the vertical load, and the elastic body 13 is deformed so that the convex portion 14 on the side surface fills the gap formed by the concave portion 15. Is pressed against the constraining surface 16a. That is, the displacement amount of the elastic body 13 is limited by the restraining body 16.

  In such a support device 10, the elastic body 13 supported by the lower rod 12 is surrounded by the upper rod 11 and the restraining body 16, and the convex portion 14 and the concave portion 15 are provided on the side surface of the elastic body 13, thereby restraining the surface. A semi-sealed space having a predetermined gap is provided between 16a and 16a. Therefore, at the beginning of input or at the time of low load input, as the input becomes higher while performing vertical flexible displacement with respect to the vertical load, the increase in vertical displacement gradually decreases and the elastic modulus increases, resulting in a large load. It behaves like a sealed rubber bearing with respect to the input and realizes high load support with a small bearing area.

  In addition, when the rotational force is applied in the vertical plane from the low load to the high load, the elastic body 13 is supported by the gap between the convex portion 14 or the concave portion 15 while the elastic body 13 is partially supported by the restraining body 16. It can be deformed and can achieve good rotation follow-up without an extreme load on the elastic body.

Here, FIG. 7 shows the relationship between the amount of displacement in the vertical direction and the vertical load.
Line A: General laminated rubber bearing The rubber bearing referred to here is not a sealed rubber bearing but a bearing in which displacement when a load is applied is not restricted.
Line B: The outer shape of the elastic body 13 is made smaller than the inner diameter of the restraining body 16 (the inner diameter of the pot portion), the convex portions 14 and the concave portions 15 are formed larger, and the restraining surface 16a and the side surface of the elastic body 13 The characteristics when the gap between them is increased are shown. (Large gap)
Line C: Characteristic when the gap between the restraining surface 16a and the side surface of the elastic body 13 is made smaller than that of the line B. (In the gap)
Line D: shows characteristics when the gap between the restraining surface 16a and the side surface of the elastic body 13 is minimized. (Small gap)
Line E: A sealed rubber bearing that does not provide a gap between the restraining surface 16a and the side surface of the elastic body 13. Although it has a rotation follow-up performance, it has almost no elastic displacement in the vertical direction and is handled as a metal bearing.

  In the present invention, any support device for line AE can be applied.

  In the rubber bearing shown by line A in FIG. 7, as the vertical load increases, the amount of vertical displacement increases substantially proportionally, and the slope (constraint or spring constant) of the graph is substantially constant. According to the example of the line BD in which the convex portion 14 and the concave portion 15 are provided on the side surface of the elastic body 13, the amount of vertical displacement increases as the vertical load increases, but the characteristics are nonlinear. That is, the inclination (constraint degree or spring constant) of the graph representing the magnitude of the vertical load reaction force with respect to the vertical displacement increases as the vertical displacement increases. Thus, when the convex part 14 and the recessed part 15 are provided in the side surface of the elastic body 13, it changes to a more advanced sealed state and the increase amount of a vertical displacement amount becomes small, so that a big load is input. The upper structure 1 can be supported by characteristics, that is, with the degree of restraint being variable. In other words, the bearing device 10 can support a high load while having appropriate vertical flexibility. Moreover, when the example of line BD is seen, the gentle range (primary gradient) of the inclination of the graph showing the magnitude | size of the vertical load reaction force with respect to a vertical displacement can be set narrowly, so that a clearance gap is small. That is, the vertical displacement is reduced. Furthermore, in the sealed rubber bearing of line E, there is almost no elastic displacement in the vertical direction.

  In particular, according to the example of the line BD in which the convex portion 14 and the concave portion 15 are provided on the side surface of the elastic body 13, when a high load is applied, the vertical flexible displacement becomes small and behaves like a sealed rubber bearing. Therefore, in the example of the line BD, the use range in the line BD is set according to the type, application, and the like of the superstructure 1 to be supported. For example, when a live load is added to the dead load, it is possible to reduce vibration and noise when passing through the vehicle by including it in the steep slope range (secondary slope) of the graph. . In addition, since there is vertical deflection at low load, the bearing device of line BD can be handled as belonging to the elastic bearing device.

[5. Explanation of laminated elastic body]
In the above example, the supporting device 10 using the elastic body 13 having a single elastic layer has been described. As the elastic body 13, a laminated structure in which an elastic layer and a reinforcing plate are laminated as shown in FIG. The elastic body 17 may be used. The elastic body 17 includes a reinforcing plate 17a, a plurality of elastic layers 17b, and the reinforcing plate 17a and the elastic layer 17b are bonded to each other by vulcanization bonding. When a load is applied to the single-layer elastic body 13, the free side surface is pushed out to the side, and in particular, bulges around the central portion in the thickness direction. In the laminated elastic body 17, since the reinforcing plate 17 a is provided, swelling of the free side surface of the elastic body 17 is suppressed, and the load bearing capacity is increased. However, since the side surface of the elastic layer 17b between the reinforcing plates 17a is also a free side surface, it slightly bulges to the side according to the load. However, in the support device 10, the restraint body 16 restrains the deformation of the elastic body 17, so that the bulging amount is small. Even in the elastic body 17, the side surface is provided with a convex portion 18 and a concave portion 19 along the circumferential direction in the thickness direction.

  That is, as shown in FIG. 8, in the laminated elastic body 17, on the side surface, the convex portion 18 is provided at the position of the elastic layer 17b on the free side surface, and the concave portion 19 is provided at the position of the reinforcing plate 17a. In this case, when the load is applied, the convex portion 18 comes into strong pressure contact with the restraining surface 16a of the restraining body 16 before the concave portion 19 because the free side surface of the elastic layer 17b bulges. Of course, in the present invention, as shown in FIG. 9, the position of the reinforcing plate 17 a may be the convex portion 18 and the position of the elastic layer 17 b may be the concave portion 19. In this case, the free side surface of the elastic layer 17b which is the recess 19 slightly bulges, so that the convex portion 18 and the concave portion 19 are in contact with the restraint surface 16a of the restraint body 16 in the same manner and are evenly pressed. Can be done. The laminated elastic body 17 is the elastic portion at the position between the reinforcing plates that has the largest bulging amount in the past. The convex portion 18 is provided at this portion, and the periphery of the convex portion 18 is restricted by the restraining surface 16 a of the restraining body 16. Therefore, even when a high load is input, local stress on the elastic layer 17b around the internal reinforcing plate 17a is relieved. Further, the internal reinforcing plate 17a is not easily crushed by a high load, and the reinforcing plate 17a can be thinned, and the entire thickness of the support device 10 can be reduced.

  The size relationship between the laminated elastic body 17 and the restraining body 16 is the same as that of the elastic body 13, and as described with reference to FIG. 3 and FIG. The convex portion 18 may be in a non-contact state with the constraining surface 16a on the inner peripheral surface of the constraining body 16, but may be in a contact state. In this case, the convex portion 18 on the side surface of the elastic body 17 comes into contact with the constraining surface 16a on the inner peripheral surface of the constraining body 16 at the time of assembly, which is preferable because positioning is improved. In the present invention, the presence or absence of contact between the elastic body and the restraint body when there is no input (no load) is not particularly limited. For example, when a large load is input, the elastic body 17 The convex portion 18 on the side surface may be in contact with the restraining surface 16 a on the inner peripheral surface of the restraining body 16.

  In addition, you may comprise an upper collar and a restraint body integrally. In the example of FIG. 8, the upper collar 11 and the restraining body 16 are configured to overlap and be integrated when viewed in the vertical direction. In the laminated elastic body 17, the vertical load support performance, the horizontal load support performance, and the vertical rotation performance are adjusted by the area and thickness of the elastic layer, the number, the area and thickness of the reinforcing plate, the number, and the like. I can do it. Further, the restraining body 16 is fixed to the outer peripheral side of the lower surface of the upper collar 11. For example, the upper rod 11 and the restraining body 16 may be coupled using a fixing means 16b such as a bolt / nut. Further, as the fixing means 16b, either one of the upper collar 11 and the restraining body 16 is provided with a male screw, and the other is provided with a female screw. It can also be performed by a known bonding method.

  The number of reinforcing plates 17a may be one or more. Further, in the case of a plurality of sheets, for example, a plurality of reinforcing plates 17a may be provided in parallel with each other, or a plurality of annular reinforcing plates 17a may be provided concentrically.

[6. Modification 1 of bearing device]
Note that the support device 10 may be used upside down, with the upper rod 11 serving as the lower rod and the lower rod 12 serving as the upper rod. In this case, the elastic sealing body 20 a is provided between the restraining body 16 and the upper structure 1 or the upper plate 3. As a result, even in such a support device 10, the elastic sealing body 20a can prevent foreign matter such as moisture and dust from entering the inside, and can ensure hermeticity.

  Further, the support device 10 may fix the restraining body 16 to the outer peripheral portion of the lower rod 12 instead of the upper rod 11 by the fixing means 16b. In this case, the distal end portion 16 d of the restraining body 16 is located outside the outer peripheral portion of the upper collar 11 and is not fixed. Then, the elastic body 17 is inserted into the pot portion constituted by the lower rod 12 and the restraining body 16, and then the upper rod 11 is disposed on the elastic body 17. Even in such a support device 10, the upper rod 11 can be displaced vertically downward while compressing the elastic body 13 when a vertical load is input, and the same effect as in the example of FIG. 1 can be obtained. I can do it.

  In this case, the elastic sealing body 20 a is provided between the restraining body 16 and the upper structure 1 or the upper plate 3. As a result, even in such a support device 10, the elastic sealing body 20a can prevent foreign matter such as moisture and dust from entering the inside, and can ensure hermeticity.

[7. Modification 2 of bearing device]
A support device 30 shown in FIG. 10 has a core member 31 attached to the lower rod 12 and a lifting prevention portion and a horizontal displacement prevention portion. The bearing device 30 includes an elastic body 17 having a laminated structure in which an elastic layer and a reinforcing plate are laminated between an upper collar 11 as a first rigid body and a lower collar 12 as a second rigid body. ing. The upper collar 11 of the support device 30 has a through hole 32 penetrating through the front and back surfaces. The core material 31 is inserted into the through hole 32 from the upper surface side of the upper collar 11. The through hole 32 is formed to a depth that allows the tip surface of the core member 31 to be lowered by one step without protruding from the upper surface of the upper rod 11 in consideration of the displacement of the upper flange 11 vertically downward. In the through hole 32, a lifting prevention piece 32a is formed in a flange shape.

  The core material 31 inserted through the through hole 32 is made of a metallic bolt-shaped member having a head that becomes the large diameter portion 33, and the large diameter portion 33, which is the tip portion, is inside the through hole 32 of the upper collar 11. It is set to a size that can be accommodated. The core material 31 is inserted into the insertion hole 34 formed in the substantially central portion of the elastic body 17 from the through hole 32 of the upper collar 11, and further, the screw formed on the support surface side of the elastic body 17 of the lower collar 12. It is fixed by being screwed into the hole 35. When the core material 31 is inserted from the through hole 32 and fixed to the screw hole 35, the large diameter portion 33 is accommodated in the through hole 32 so as to be lowered by one step. The core member 31 is fixed to the lower rod 12 so that when the upper rod 11 and the lower rod 12 are about to be displaced in the horizontal direction, the tip surface of the lifting prevention piece 32a or the side surface of the through hole 32 is At the end, the displacement of the upper collar 11 is restricted. That is, the core material 31 functions as a horizontal displacement prevention unit, and prevents the upper collar 11 and the lower collar 12 from being excessively displaced in the horizontal direction. Further, the large-diameter portion 33 of the core member 31 is larger than the opening diameter of the lifting prevention piece 32a of the through hole 32 and engages with the lifting prevention piece 32a. The core material 31 has a large-diameter portion of the core material 31 fixed to the lower collar 12 when an upward lifting force is applied to the upper collar 11, that is, a force that the upper collar 11 attempts to lift relative to the lower collar 12. When the lifting prevention piece 32 a is locked to the 33, it is possible to prevent the upper collar 11 and the lower collar 12 from separating. That is, the large diameter part 33 functions also as a lifting prevention part.

  Further, the elastic body 17 is surrounded by the restraining body 16 as shown in FIG. The restraining body 16 is a cylindrical body having an inner diameter that is slightly larger than the average outer diameter of the elastic body 17, is fixed to the outer peripheral portion of the upper collar 11, and a pot portion in which the elastic body 17 is accommodated is formed inside thereof. Yes. For example, the upper rod 11 and the restraining body 16 may be coupled using a fixing means 16b such as a bolt / nut. As the fixing means 16b, either one of the upper collar 11 and the restraining body 16 is provided with a male screw, and the other is provided with a female screw. It can be performed by a known bonding method or the like.

  The tip 16d on the lower collar 12 side of the restraint 16 is located outside the outer periphery of the lower collar 12, and is not fixed. As a result, when the vertical load is input, the upper collar 11 can be displaced vertically downward while compressing the elastic body 13. That is, the tip 16d on the lower collar 12 side of the restraint 16 is positioned between the upper collar 11 and the lower collar 12 in cooperation with the core member 31 by being positioned outside the outer periphery of the lower collar 12. It functions as a function of suppressing shear deformation of the elastic body 17 provided, and as a cylinder that restrains the elastic body 17 in a semi-sealed state to increase the bearing pressure. Thus, the elastic body 17 supported by the lower collar 12 is disposed in a semi-sealed space with the upper surface surrounded by the upper collar 11 and the side surface by the restraining body 16. That is, the bearing device 30 is a semi-sealed rubber bearing, and can support a high load with a small bearing area.

  Even in such a support device 30, like the above-described support device 10, the elastic body 17 supported by the lower collar 12 is surrounded by the upper collar 11 and the restraining body 16, thereby providing a semi-sealed space. The elastic member 17 is provided with a convex portion 18 and a concave portion 19 while realizing a high load bearing with a small bearing area like a semi-sealed rubber bearing. By providing a gap between them, vertical flexible displacement with respect to a vertical load can be realized. In addition, when the rotating action is performed, the elastic body 17 is deformed by a gap formed by the convex portion 18 or the concave portion 19, and good rotation followability can be realized. Then, as shown in FIG. 7, by providing a gap between the constraining surface 16 a and the side surface of the elastic body 17 by the concave portion 19 and the convex portion 18, a more highly sealed state is obtained as a larger load is input. Thus, the amount of increase in the vertical displacement can be reduced.

  Further, even in such a support device 30, like the support device 10, moisture, dust, etc. are contained inside by the elastic sealing body 20 a provided between the restraint body 16 and the lower structure 2 or the lower plate 5. It is possible to prevent the intrusion of foreign matter, and to ensure sealing performance.

  In the support device 30, the elastic body 17 serving as the support body may be a single-layer elastic body 13 (see FIG. 2).

  Alternatively, the upper eyelid 11 may be used as the lower eyelid, and the lower eyelid 12 may be used as the upper eyelid. In this case, the elastic sealing body 20 a is provided between the restraining body 16 and the upper structure 1 or the upper plate 3. Thereby, even in such a support device 30, foreign substances such as moisture and dust can be prevented from entering the inside by the elastic sealing body 20a, and sealing performance can be secured.

  Furthermore, when installing in the upper structure 1 and the lower structure 2, as described above, the upper plate 3 and the lower plate 5 may be interposed and fixed, and the sliding members 4 and 6 are further interposed. It is possible to fix them (see FIG. 1). In this case, the elastic sealing body 20a is provided between the restraining body 16 and the upper plate 3 or the lower plate 5, or between the restraining body 16 and the sliding member 4 or the sliding member 6. As a result, even in such a support device 30, foreign substances such as moisture and dust can be prevented from entering the inside by the elastic sealing body 20a, and sealing performance can be ensured.

  Further, as shown in FIG. 11, the support device 30 may fix the restraining body 16 to the outer peripheral portion of the lower rod 12 instead of the upper rod 11 by the fixing means 16 b. In this case, the distal end portion 16 d of the restraining body 16 is located outside the outer peripheral portion of the upper collar 11 and is not fixed. Then, the elastic body 17 is inserted into the pot portion constituted by the lower rod 12 and the restraining body 16, and then the upper rod 11 is disposed on the elastic body 17, and the core material 31 is inserted through the elastic body 17. 34 and is fixed to the screw hole 35 of the lower collar 12. Even in the support device 30 as shown in FIG. 11, when the vertical load is inputted, the upper collar 11 can be displaced vertically downward while compressing the elastic body 13, and is similar to the example of FIG. An effect can be obtained.

  In this case, the elastic sealing body 20 a is provided between the restraining body 16 and the upper structure 1 or the upper plate 3. Thereby, even in such a support device 30, foreign substances such as moisture and dust can be prevented from entering the inside by the elastic sealing body 20a, and sealing performance can be secured.

[8. Modification 3 of bearing device]
In the support device 40 shown in FIG. 12, the core member 41 does not penetrate the upper and lower collars 11 and 12. In this support device 40, a core material 41 is attached to the lower rod 12, and a lifting prevention portion and a horizontal displacement prevention portion are provided. In addition, the bearing device 40 includes an elastic body 17 having a laminated structure in which an elastic layer and a reinforcing plate are laminated between an upper collar 11 as a first rigid body and a lower collar 12 as a second rigid body. ing.

  The upper collar 11 is disposed on the upper surface of the elastic body 17, and the restraining body 16 is fixed to the outer peripheral portion. For example, the upper rod 11 and the restraining body 16 may be coupled using a fixing means 16b such as a bolt / nut. Further, as the fixing means 16b, either one of the upper collar 11 and the restraining body 16 is provided with a male screw, and the other is provided with a female screw. It can be performed by a known bonding method or the like. A tip 16d on the lower collar 12 side of the restraint 16 is formed with a flange-shaped lifting prevention piece 42 projecting inward.

  The core member 41 is made of a metal bolt-like member having a head portion that becomes the large-diameter portion 43, and the tip portion is screwed into a screw hole 44 formed on the support surface side of the elastic body 17 of the lower collar 12. Fixed by. The core member 41 has a large diameter portion 43 at the upper end portion, and serves as a support surface that supports the elastic body 17. Further, the large diameter portion 43 engages with the rising prevention piece 42 of the restraint 16 fixed to the outer peripheral portion of the upper collar 11. The large-diameter portion 43 of the core member 41 fixed to the lower rod 12 has a role of the upper sun preventing portion by the upper lifting prevention piece 42 being locked when the upper lifting force is applied to the upper rod 11. To prevent the upper arm 11 and the lower arm 12 from separating. Further, the large-diameter portion 43 of the core member 41 is formed in such a size as to slide on the restraining surface 16a of the restraining body 16, and the piston of the piston that restrains the elastic body 17 in a semi-sealed state to increase the bearing pressure. Thus, the displacement in the vertical direction is allowed, and a horizontal displacement prevention unit is provided to restrict the displacement in the horizontal direction by the core member 41. Thereby, it is possible to prevent the upper collar 11 and the lower collar 12 from being relatively displaced in the horizontal direction. Further, a gap is provided between the lifting prevention piece 42 and the lower rod 12 so that the lifting prevention piece 42 does not hit the lower rod 12 when the upper rod 11 is displaced vertically downward. .

  Even in such a support device 40, like the above-described support devices 10 and 30, the elastic body 17 supported by the lower rod 12 is surrounded by the upper rod 11 and the restraining body 16 to be semi-sealed. The space 18 is configured to provide a high load support with a small bearing area like a sealed rubber bearing, while providing a convex portion 18 and a concave portion 19 on the side surface of the elastic body 17, By providing a gap between them, it is possible to enable vertical flexible displacement corresponding to the vertical load. In addition, during the rotation action, the elastic body 17 is more easily deformed by the gap between the convex portion 18 or the concave portion 19, and good rotational followability can be realized. Then, as shown in FIG. 7, by providing a gap between the constraining surface 16 a and the side surface of the elastic body 17 by the concave portion 19 and the convex portion 18, the higher the input, the higher the sealed state. It is possible to change and increase the bearing pressure to reduce the amount of increase in vertical displacement.

  Further, the bearing device 40 is provided with an elastic sealing body 20b for preventing foreign matters such as moisture and dust from entering the gap between the lifting prevention piece 42 and the lower rod 12.

  The elastic sealing body 20b is a ring-shaped packing made of an elastic material having elastic characteristics such as a rubber material or a synthetic resin material, like the elastic sealing body 20a of the support devices 10 and 30, and is a restraint body. 16 is disposed between the lifting prevention piece 42 and the lower rod 12 formed at the distal end portion 16d. Further, the elastic sealing body 20b has a rectangular cross section, for example. Further, the elastic sealing body 20b having a rectangular cross section has a length in the thickness direction, and the rising prevention piece 42 when the support device 40 is installed between the upper structure 1 and the lower structure 2 is used. And longer than the gap between the lower arm 12 and the lower arm 12. Thereby, the elastic sealing body 20b is disposed in a gap between the lifting prevention piece 42 and the lower rod 12 in a state of being bent inward or outward (inward in FIG. 12). The elastic sealing body 20b having such a shape is attached to the lifting prevention piece 42 and the lower rod 12 by bonding or the like.

  In this manner, the elastic sealing body 20b closes the gap between the lifting prevention piece 42 and the lower rod 12. Therefore, the elastic sealing body 20b can prevent foreign matters such as moisture and dust from entering the inside of the support device 40, and can ensure the sealing performance of the support device 40. Further, since the elastic sealing body 20b is formed of an elastic material, even if the lifting prevention piece 42 is close to or separated from the lower rod 12 in the vertical displacement direction due to a vertical load, it can expand and contract. . Therefore, the elastic sealing body 20b can prevent foreign matters such as moisture and dust from entering the inside of the support device 40 even if the lifting prevention piece 42 approaches or moves away from the lower rod 12 in the vertical displacement direction due to a vertical load. This can be prevented, and the sealing of the support device 40 can be secured. That is, the elastic sealing body 20b has a sealing function.

  The elastic sealing body 20b is not limited to being attached by adhesion, and may be attached by a conventionally known fixing method such as a fixing means such as a bolt and a nut.

  Further, the elastic sealing body 20b can expand and contract even if the lifting prevention piece 42 approaches or moves away from the lower rod 12 in the vertical displacement direction due to a vertical load, and further, the sealing performance of the bearing device 40 is improved. Any thing can be used as long as it can be secured.

  For example, the elastic sealing body 20b has a length in the thickness direction between the upper prevention piece 42 and the lower rod 12 when the support device 40 is installed between the upper structure 1 and the lower structure 2. The length may be approximately the same as or slightly shorter than the gap (see FIG. 5A). Further, the elastic sealing body 20b may have a circular cross section (see FIG. 5B), a hollow circular shape (see FIG. 5C), or a bellows shape (see FIG. 5D).

  Furthermore, as shown in FIG. 13, the circular or hollow circular elastic sealing body 20b is arranged in the arrangement recess 42a provided on the surface facing the lower collar 12 of the lifting prevention piece 42. Also good.

  Furthermore, the bellows-like elastic sealing body 20b may be formed of a thin metal. Even if the bellows-like elastic sealing body 20b is formed of a thin metal, the shape of the bellows-like elastic sealing body 20b expands and contracts even when the lifting prevention piece 42 approaches or moves away from the lower rod 12 in the vertical displacement direction due to a vertical load. The sealing of the support device 40 can be ensured. Furthermore, the bellows-like elastic sealing body 20b may be disposed on a tapered portion 42b provided on the tip surface of the lifting prevention piece 42 as shown in FIG.

  Furthermore, the elastic sealing body 20b may be attached to the outer peripheral portion of the lifting prevention piece 42 so as to close the gap between the lifting prevention piece 42 and the lower collar 12. Furthermore, the elastic sealing body 20b may be attached to the gap between the lifting prevention piece 42 and the core member 41 as shown in FIG. Further, the elastic sealing body 20 b may be attached to the gap between the lifting prevention piece 42 and the large diameter portion 43.

  Furthermore, the elastic sealing body 20b may be configured by a ring member formed of the same or different material as the elastic body 13 among the materials of the elastic body 13 described above, and may be capable of supporting a load. That is, the elastic sealing body 20b is a support body similar to the elastic body 13, and may have a load support function in addition to the sealing function.

  The elastic sealing body 20b having such a sealing function and a load support function is, for example, shown in a plan view (thickness) in the gap between the lifting prevention piece 42 and the lower rod 12, as shown in FIG. Arranged so as not to overlap with the elastic body 17 in a direction view). Further, as shown in FIG. 16B, the elastic sealing body 20b is arranged in the gap between the lifting prevention piece 42 and the lower rod 12 so as to overlap the elastic body 13 in plan view (thickness direction view). It may be provided. Further, as shown in FIG. 16C, the elastic sealing body 20b partially overlaps the elastic body 17 in a plan view (thickness direction view) in the gap between the lifting prevention piece 42 and the lower rod 12. You may make it arrange | position.

  In any of these elastic sealing bodies 20b, it is possible to prevent foreign matter such as moisture and dust from entering the inside of the support device 40, and in addition to ensuring the sealing performance of the support device 40, the elastic body 17 and a vertical load can be supported.

  Further, the elastic sealing body 20b shown in FIGS. 16B and 16C is provided so as to at least partly overlap the elastic body 17 in a plan view (thickness direction view). However, the elastic body 17 and the elastic sealing body 20b function as a multistage parallel spring. Thereby, in the bearing apparatus 40, it becomes possible to bear a high load with a small bearing area while realizing miniaturization as a whole. Further, the elastic sealing body 20 b includes a gap between the lifting prevention piece 42 and the lower rod 12, a gap between the lifting prevention piece 42 and the core member 41, and a gap between the lifting prevention piece 42 and the large diameter portion 43. The elastic body 17 may be provided so as to at least partially overlap in a plan view (view in the thickness direction).

  Further, in the support device 40, the elastic body 17 serving as a support body may be an elastic body 13 having a single elastic layer (see FIG. 2). Alternatively, the upper eyelid 11 may be used as the lower eyelid, and the lower eyelid 12 may be used as the upper eyelid. Furthermore, when installing in the upper structure 1 and the lower structure 2, as above-mentioned, you may fix with the upper plate 3 and the lower plate 5 interposed, and also the sliding members 4 and 6 may be fixed. You may fix by interposing (refer FIG. 1).

[9. Modification 4 of bearing device]
A support device 50 shown in FIG. 17 is a further modification of the support device 40 of FIG. In this support device 50, a core material 51 is attached to the lower rod 12, and a lifting prevention portion and a horizontal displacement prevention portion are provided. In this support device 50, an elastic body 17 having a laminated structure in which an elastic layer 17b and a reinforcing plate 17a are laminated is interposed between an upper collar 11 as a first rigid body and a lower collar 12 as a second rigid body. ing.

  The upper collar 11 is disposed on the upper surface of the elastic body 17, and the restraining body 16 is fixed to the outer peripheral portion. For example, fixing means 16b such as bolts and nuts can be used for coupling the upper collar 11 and the restraining body 16. Further, as the fixing means 16b, either one of the upper collar 11 and the restraining body 16 is provided with a male screw, and the other is provided with a female screw. It can be performed by a known bonding method or the like. A tip 16d on the lower collar 12 side of the restraint 16 is formed with a flange-shaped lifting prevention piece 52 projecting inward. The flange-shaped lifting prevention piece 52 may be fixed to the tip 16d on the lower collar 12 side of the restraining body 16 by a fixing means such as a bolt or a nut.

  The lower end portion of the core material 51 is fixed to the lower collar 12 serving as a base plate. The lower end surface of the core material 51 is provided with a positioning convex portion 51a, and the positioning convex portion 51a is positioned by being fitted into the positioning concave portion 51b on the lower collar 12 side. Further, the lower rod 12 is formed with an insertion hole 55a, and the fixing bolt 55b is fixed by being fastened to a fixing hole 55c provided at the lower end portion of the core member 51. A large-diameter portion 53 serving as a support surface for supporting the elastic body 17 is integrally provided at the upper end portion of the core material 51. The large-diameter portion 53 is provided with a screw hole 53a at the center of the back surface, and is integrated by tightening a screw portion 54 formed at the tip of the core material 51 into the screw hole 53a. Note that the bolt head portion of the fixing bolt 55b is accommodated without protruding into the recess 55d communicating with the insertion hole 55a of the lower collar 12.

  The large-diameter portion 53 integral with the core member 51 engages with the rising prevention piece 52 of the restraining body 16 whose lower surface of the outer peripheral portion is fixed to the outer peripheral portion of the upper collar 11. The large-diameter portion 53 of the core member 51 integrated with the lower rod 12 functions as an upper sun preventing portion by the upper lifting prevention piece 52 being locked when the upper lifting force is applied to the upper rod 11. To prevent the upper arm 11 and the lower arm 12 from separating. The large-diameter portion 53 of the core member 51 is formed in such a size as to slide on the restraining surface 16a of the restraining body 16, and is a piston that restrains the elastic body 17 in a semi-sealed state to increase the bearing pressure. Thus, the vertical displacement is allowed, and the horizontal displacement is prevented by the core member 51 as a horizontal displacement prevention unit. Thereby, it is possible to prevent the upper collar 11 and the lower collar 12 from being relatively displaced in the horizontal direction. Furthermore, a gap is provided between the lifting prevention piece 52 and the lower rod 12 so that the upper prevention piece 52 does not hit the lower rod 12 when the upper rod 11 is displaced vertically downward. .

  Even in such a support device 50, the elastic body 17 supported by the lower rod 12 is surrounded by the upper rod 11 and the restraining body 16 in the same manner as the above-described support devices 10, 30, and 40. A constrained surface 16a is formed by providing a convex portion 18 and a concave portion 19 on the side surface of the elastic body 17 while forming a sealed space portion and realizing a high load bearing with a small bearing area like a sealed rubber bearing. By providing a gap between them, a vertical flexible displacement with respect to a vertical load can be realized. In addition, during the rotation action, the elastic body 17 is more easily deformed by the gap between the convex portion 18 or the concave portion 19, and good rotational followability can be realized. Then, as shown in FIG. 7, by providing a gap between the constraining surface 16 a and the side surface of the elastic body 17 by the concave portion 19 and the convex portion 18, the higher the load, the higher the sealed state. The amount of increase in vertical displacement can be reduced by changing.

  Further, even in such a support device 50, as in the support device 40 of FIG. 16, moisture and dust are internally contained by the elastic sealing body 20b provided in the gap between the lifting prevention piece 52 and the lower rod 12. It is possible to prevent the entry of foreign matter such as, and to ensure sealing performance. Further, even in such a support device 50, as in the support device 40 of FIG. 16, by providing the elastic sealing body 20b so as to be able to support a load, foreign matters such as moisture and dust enter the inside of the support device 50. In addition to ensuring the sealing performance of the bearing device 50, it is possible to support a vertical load together with the elastic body 17.

  In the support device 50, the elastic body 17 serving as a support body may be a single-layer elastic body 13 (see FIG. 2). Alternatively, the upper eyelid 11 may be used as the lower eyelid, and the lower eyelid 12 may be used as the upper eyelid. Furthermore, when installing in the upper structure 1 and the lower structure 2, as described above, the upper plate 3 and the lower plate 5 may be interposed and fixed, and the sliding members 4 and 6 are further interposed. It is possible to fix them (see FIG. 1).

[10. Modification 5 of the bearing device]
In the above example, the case where the convex portions 14 and 18 and the concave portions 15 and 19 are provided on the side surfaces of the elastic bodies 13 and 17 has been described. However, as shown in FIG. Instead of providing the portions 14 and 18 and the concave portions 15 and 19, the convex portion 61 or the concave portion 62 along the circumferential direction may be provided on the constraining surface 16 a of the constraining body 16. The structure of the support device is the same as that of the support device 40 shown in FIG. Here, as an example, the laminated elastic body 17 is used. In FIG. 18, a flange-like lifting prevention piece 42 is fixed to a distal end portion 16 d on the lower collar 12 side of the restraining body 16 by a fixing means 16 c such as a bolt and a nut so as to protrude inward.

  In assembling such a support device, the upper collar 11 is fixed to the restraining body 16 by the fixing means 16b and the pot portion is formed, or at least the core member 41 of the restraining body 16 is inserted and the lifting prevention piece 42 is inserted. May be fixed by the fixing means 16c to form the pot portion, and then the elastic body 17 may be fitted into the pot portion.

  The constraining surface 16a of the constraining body 16 shown in FIG. 18 is provided with a convex portion 61 at the position of the elastic layer 17b on the free side surface and a concave portion 62 at the position of the reinforcing plate 17a. In this case, when a load is applied to the convex portion 61, the free side surface of the elastic layer 17 b bulges, so that the side surface that bulges laterally between the reinforcing plates 17 a and 17 a is pressed into contact with the convex portion 61. Will be.

  The position of the reinforcing plate 17a may be the convex portion 61, and the position of the elastic layer 17b may be the concave portion 62. In this case, the free side surface of the elastic layer 17b which is the concave portion 62 slightly bulges so that the convex portion 61 and the concave portion 62 are pressed against the constraining surface 16a of the constraining body 16 in the same manner. I can do it. As described above, when the convex portion 61 and the concave portion 62 are provided on the restraining surface 16 a of the restraining body 16, it is similar to the case where the convex portions 14 and 18 and the concave portions 15 and 19 are provided on the side surfaces of the elastic bodies 13 and 17. A working effect can be obtained.

  Further, even in such a support device 50, like the support device 40 in FIG. 16 and the support device 50 in FIG. 17, the elastic sealing body 20b provided between the lifting prevention piece 52 and the lower rod 12 is used. It is possible to prevent foreign matter such as moisture and dust from entering the inside, and to ensure sealing. Further, even in such a support device 50, as in the support device 40 of FIG. 16, by providing the elastic sealing body 20b so as to be able to support a load, foreign matters such as moisture and dust enter the inside of the support device 50. In addition to ensuring the sealing performance of the bearing device 50, it is possible to support a vertical load together with the elastic body 17.

[11. Other variations]
In addition, you may provide the elastic sealing bodies 20a and 20b doubly. For example, in addition to the elastic sealing body 20a having the sealing function and the load supporting function shown in FIG. 6, a separate elastic sealing body having the sealing function shown in FIGS. 1 and 5A to 5E is restrained. You may make it provide in the outer peripheral part of the elastic sealing body 20a of the surface facing the upper collar 11 or the lower collar 12 of the body 16, or the outer peripheral part of the restraint body 16, etc. Further, in addition to the elastic sealing body 20b having the sealing function and the load supporting function shown in FIG. 16, an additional elastic sealing body having the sealing function shown in FIGS. 12 and 5A to 5E is lifted. You may make it provide in the outer peripheral part of the elastic sealing body 20b of the surface facing the upper collar 11 or the lower collar 12 of the prevention piece 42, or the outer peripheral part of the lifting prevention piece 42, etc. Furthermore, in addition to the elastic sealing body 20b having the sealing function and the load support function shown in FIG. 16, a separate elastic sealing body having the sealing function shown in FIG. 15 may be provided.

  Furthermore, the elastic bodies 13 and 17 are not limited to having the convex portions 14 and 18 and the concave portions 15 and 19 provided on the side surfaces along the circumferential direction, but as shown in FIG. The convex portions 14 and 18 and the concave portions 15 and 19 may be provided along the direction. Thereby, the elastic bodies 13 and 17 can be smoothly inserted in a pot part. Furthermore, the convex parts 14 and 18 and the concave parts 15 and 19 provided along the thickness direction may be linear or wavy. Furthermore, the convex parts 14 and 18 and the concave parts 15 and 19 provided along the thickness direction may be continuous or intermittent. Further, the convex portions 14 and 18 and the concave portions 15 and 19 provided along the thickness direction may have equal intervals in the circumferential direction or may not have equal intervals.

  That is, in the present invention, the convex portions 14 and 18 and the concave portions 15 and 19 of the elastic bodies 13 and 17 are not particularly limited in shape, number, interval, or the like. Furthermore, the elastic bodies 13 and 17 do not need to be provided with the convex portions 14 and 18 and the concave portions 15 and 19.

  Furthermore, in the above description, the bridge support device has been described as the support device of the present invention. However, the present invention is not limited to the bridge support device, and is used for vibration control and seismic isolation of various structures. It can be employed as a device.

DESCRIPTION OF SYMBOLS 1 Upper structure, 2 Lower structure, 3 Upper plate, 4 Sliding member, 5 Lower plate, 6 Sliding member, 10 Support apparatus, 11 Upper rod, 12 Lower rod, 13 Elastic body, 13a One end surface, 13b The other end face, 14 convex part, 15 concave part, 16 constraining body, 16a constraining surface, 16b fixing means, 16c fixing means, 16d tip part, 16e disposing concave part, 17 elastic body, 17a reinforcing plate, 17b elastic layer, 18 convex part Part, 19 recessed part, 20a elastic sealing body, 20b elastic sealing body, 30 bearing device, 31 core material, 32 through hole, 32a lifting prevention piece, 33 large diameter part, 34 insertion hole, 35 screw hole, 40 bearing device, 41 Core material, 42 Lifting prevention piece, 42a Disposition concave portion, 42b Tapered portion, 43 Large diameter portion, 44 Screw hole, 50 Bearing device, 51 Core material, 51a Positioning convex 51b Positioning concave part 52 Lifting prevention piece 53 Large diameter part 53a Screw hole 54 Screw part 55a Insertion hole 55b Fixing bolt 55c Fixing hole 55d Concave part 61 Convex part 62 Concave part

Claims (10)

A first rigid body disposed on one of the first structure or the second structure;
A second rigid body disposed on the other of the first structure or the second structure;
An elastic body disposed between the first rigid body and the second rigid body;
A restraining body surrounding the elastic body;
An elastic sealing body that is disposed in a gap between the distal end portion of the restraint body and any one of the structures or the rigid body, has elasticity and / or flexibility, and seals the gap; Bearing device equipped with.   The restraining body has a function of restraining elastic deformation of the elastic body and / or a function of maintaining a substantially sealed state of the elastic body and / or a function of restraining relative displacement between the first rigid body and the second rigid body. The bearing device according to claim 1, wherein Either the first rigid body or the second rigid body is provided with a core material,
The bearing device according to claim 1, wherein the core member has a lifting prevention portion and a horizontal displacement prevention portion.   The support device according to any one of claims 1 to 3, wherein a flange-shaped lifting prevention piece is provided at a distal end portion of the restraining body. The bearing device according to claim 4 , wherein the elastic sealing body is disposed in a gap between the lifting prevention piece and the first rigid body or the second rigid body. The said elastic sealing body is arrange | positioned by the clearance gap between the said anti-lifting piece and the core material provided in any one of said 1st rigid body and said 2nd rigid body. 4. The support device according to 4 or 5.   The bearing device according to claim 1, wherein the elastic sealing body is an elastic body capable of supporting a load.   The support device according to claim 1, wherein a convex portion and / or a concave portion is formed on a side surface of the elastic body and / or a constraining surface of the constraining body.   When a predetermined value or more is input, the elastic body elastically deforms so as to reduce the volume of the gap created by the convex portion and the concave portion, and the deformed elastic body abuts on the constraint body and / or The bearing device according to claim 8, wherein the bearing device is configured to be pressed and restrained from deformation of the elastic body. The elastic body is surrounded by the first rigid body, the second rigid body, and the restraining body to be in a semi-sealed state,
The bearing device according to any one of claims 1 to 9, wherein the bearing device changes to a higher sealed state as the load on the elastic body increases.

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