JP5791885B2 - Damping damper - Google Patents

Description

  The present invention relates to a damping damper used in a building in order to attenuate a vibration caused by an external force such as an earthquake.

  In a building such as a house, a damping damper using a viscoelastic body is installed in a brace in a frame formed of columns and horizontal members, and the vibration is caused by shear deformation of the viscoelastic body during excitation. Damping structures that absorb energy are often used. For example, as disclosed in Patent Documents 1 and 2, the vibration damper is provided between an outer tube, an inner tube that is loosely inserted coaxially with the outer tube, and an overlapping surface between both the tubes, and the opposing surfaces of both tubes are respectively It has a damper portion composed of a viscoelastic body such as an elastomer to be bonded, and is laid in a brace shape in a building frame. In other words, the viscoelastic body is sheared and deformed by the operations in the opposite axial directions of the outer tube and the inner tube accompanying the deformation of the frame to cause a damping action.

JP 2009-203747 A JP-A-9-133169

  The viscoelastic dampers as described in Patent Documents 1 and 2 have a simple structure and have an advantage that they can be attached to a wooden shaft or the like. However, viscoelastic bodies are highly temperature dependent (changes in characteristics due to temperature changes), so increase the number of dampers and increase the number and strength of bolts and screws to install the dampers to obtain the required damping performance and rigidity. The design loss increases. In addition, since the speed dependence (change in characteristics due to a change in frequency) is also large, it is necessary to increase the damping wall especially for wind countermeasures with a low frequency.

  Therefore, the present invention aims to provide a damping damper that can reduce various dependences on conditions such as temperature and speed while maintaining a simple structure, and has more excellent damping performance. is there.

To achieve the above object, according to the first aspect of the present invention, one or a plurality of cylindrical exterior members are coaxially and non-contactly mounted on a shaft-shaped or cylindrical shaft center member, and are adjacent in the radial direction. between the axis member or the exterior member and the outer peripheral side of the outer member of the inner circumferential side in a cylindrical space formed between the members, a seismic control dampers containing the unvulcanized rubber, unvulcanized While adhering the vulcanized rubber to any one of the inner peripheral side axial center member or the exterior member and the outer peripheral side exterior member , the surface of the other member is subjected to a sliding stabilization process, while the cylindrical space Both ends are closed and a ring-shaped or cylindrical sealing material bonded to one member is provided.
In order to achieve the above object, the invention according to claim 2 is characterized in that one or a plurality of cylindrical exterior members are coaxially and non-contactedly disposed on a shaft-shaped or cylindrical shaft center member and are adjacent in the radial direction. between the axis member or the exterior member and the outer peripheral side of the outer member of the inner circumferential side in a cylindrical space formed between the members, a seismic control dampers containing the unvulcanized rubber, unvulcanized the accommodation of vulcanized rubber, to close the ends of the cylindrical space, a ring-shaped or cylindrical seal is bonded to one of members of the inner circumferential side of the axis member or the exterior member and the outer peripheral side of the outer member The contact surface with the unvulcanized rubber in the sealing material is a tapered surface that protrudes toward the unvulcanized rubber side away from the peripheral edge on the bonding side in the radial direction. .
The invention according to claim 3 is characterized in that, in the configuration of claim 2, grease is interposed between opposing surfaces of the sealing material and the other member to which the sealing material is not bonded .
The invention according to claim 4, in any one of the claims 1 to 3, the unvulcanized rubber, characterized in that it has assumed a polyorganosiloxane main component was above plasticity 200 is there.

According to the present invention, it is possible to reduce various dependences on conditions such as temperature and speed while maintaining a simple structure of the shaft member and the exterior member, and the damping performance is further improved.
In particular, according to the first aspect of the invention, in addition to the above effects, the unvulcanized rubber can be easily accommodated in the cylindrical space. Further, even if the unvulcanized rubber is not fixed by adhesion or the like, the sliding resistance is stable and does not affect the damping characteristics. Furthermore, the unvulcanized rubber can be reliably sealed in the cylindrical space, and the self-extrusion phenomenon due to the unvulcanized rubber can be suppressed even if the shear deformation is repeated.
In particular, according to the second aspect of the invention, in addition to the above-described effect, the unvulcanized rubber can be reliably sealed in the cylindrical space, and the self -curing by the unvulcanized rubber can be performed even if shear deformation is repeated. Extrusion phenomenon is suppressed. Moreover, even if it is single-sided adhesion, suitable sealing properties are obtained.
According to the third aspect of the present invention, in addition to the effect of the second aspect, the sealing performance can be maintained even by single-sided adhesion, and even if a sealing material is provided, slipping can be ensured and the damping performance is hindered. There is no.
According to invention of Claim 4, in addition to the effect in any one of Claims 1 thru | or 3, the unvulcanized rubber excellent in the damping performance can be selected.

It is explanatory drawing of a damping damper, (A) is a longitudinal cross-section of an axial direction, (B) shows the arrow view of an axial direction, respectively. (A)-(C) are the cross-sectional views which show the example of a change of a damping damper. It is the schematic of the flame | frame which provided the damping damper. It is a longitudinal cross-sectional view of the axial direction which shows the example of a change of a damping damper. It is a longitudinal cross-sectional view of the axial direction which shows the example of a change of a damping damper. (A)-(D) are the A section enlarged views which show the form of a sealing material, and a modification. It is explanatory drawing which shows the example of a change of a sealing material, (A) becomes a + X side moving end, (B) becomes an intermediate position, (C) becomes a -X side moving end. (A) (B) is explanatory drawing which shows the example of a change of a sealing material.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 shows an example of a damping damper. This damping damper 1 has a circular inner cross section 2 as an axial center member made of a steel material, and covers the entire circumference excluding one end of the inner shaft 2 in a non-contact manner by being coaxially superposed on the inner shaft 2. An outer tube 3 having a circular cross section as an exterior member made of steel, and a cylindrical space 4 formed between the inner shaft 2 and the outer tube 3, and the inner shaft 2 and the outer tube 3 are mutually connected. And an unvulcanized rubber 5 (shaded portion in FIG. 1) as a plastic flow resistance material to which the opposing surfaces are bonded. Reference numerals 6 and 6 denote adhesive layers, which are formed by vulcanization adhesion or post-adhesion with an adhesive.

  As shown in FIG. 2A, the inner shaft 2 and the outer tube 3 face each other with a pair of semicircular half metal fittings 7 and 7 in which the outer tube 3 is divided with the major axis as a cross section. The flanges 8 and 8 formed on both side edges are joined by bolts and nuts, or the inner shaft 2 and the outer tube 3 are cross-sectioned like a vibration damper 1B shown in FIG. The outer tube 3 is formed into a square or a rectangle, and the flanges 10 and 10 are connected to each other as bolts and nuts as a pair of U-shaped halves 9 and 9 like the vibration damper 1C of FIG. Or may be joined. Other than this, the cross-sectional shape may be oval or elliptical.

  The unvulcanized rubber 5 has a high plasticity (preferably a plasticity of 200 or more) and a low elasticity, for example, a silicone-based unvulcanized rubber mainly composed of organopolysiloxane, NR (natural Rubber), unvulcanized rubber selected from compounds based on IR (isoprene rubber), IIR (butyl rubber), BR (butadiene rubber), EPM, EPDM (ethylene propylene rubber), and the like are used. Examples of the adhesive used for bonding the unvulcanized rubber 5 to the inner shaft 2 and the outer tube 3 include a silicone-based primer modified with an amino group or a vinyl group and a peroxide (benzoyl peroxide, dicumyl peroxide). , Dibutyl peroxide, etc.) formed with a cover layer, or vinyl silicone primer mixed with peroxide. Peroxide is used to increase resistance. In any case, the adhesion between the unvulcanized rubber 5 and the inner shaft 2 and the outer tube 3 is fixed at the interface of the unvulcanized rubber 5, and the separation between the two is not the peeling of the adhesive layer but the unvulcanized rubber. It is desirable that this occurs as a base material destruction at 5.

  The seismic damper 1 configured as described above is used by being braced in a frame 20 of a building such as a wooden building as shown in FIG. That is, the end portion of the inner shaft 2 protruding from the outer tube 3 is joined to the joint portion between the column 21 of the frame 20 and the horizontal member 22 using the gusset plate 23 and the mounting bracket 24, while the outer tube on the opposite side is joined. 3 ends are joined to the joints on the diagonal using the gusset plate 23 and the mounting bracket 24 in the same manner. In this case, an extension member may be joined to either the inner shaft 2 or the outer tube 3 depending on the size of the frame 20.

  When the seismic damper 1 thus installed is vibrated in a building, the inner shaft 2 and the outer tube 3 move relative to each other in the axial direction as the frame 20 is deformed, and the unvulcanized rubber 5 is sheared and deformed. To exert damping force. Here, since the unvulcanized rubber 5 has a low temperature dependence of the damping characteristic, it can exhibit a stable damping force in a normal temperature change region. Further, since the speed dependency is low, it is possible to effectively attenuate low-frequency vibration caused by wind.

Thus, according to the damping damper 1 of the said form, the cylindrical outer tube | pipe 3 is coat | covered coaxially and non-contactedly to the inner shaft 2, and an inner shaft is formed in the cylindrical space 4 formed between both tubes. By storing the unvulcanized rubber 5 between the outer tube 3 and the outer tube 3, it is possible to reduce various dependences on conditions such as temperature and speed while maintaining a simple structure, and more excellent damping performance. It will be.
In particular, since the unvulcanized rubber 5 is fixed to both the inner shaft 2 and the outer tube 3 here, the unvulcanized rubber 5 can be easily accommodated in the cylindrical space 4.
In addition, since the plastic flow resistance material is an unvulcanized rubber having a plasticity of 200 or more mainly composed of polyorganosiloxane, a plastic flow resistance material having excellent damping performance can be selected.

In the above embodiment, the unvulcanized rubber is bonded to the inner shaft and the outer tube at the opposing surfaces so as to be fixed in the cylindrical space. However, as shown in FIG. It may be bonded only on the facing surface, or on the contrary, it may be bonded only on the facing surface with the outer tube 3.
In order to stabilize the sliding resistance and not affect the damping performance, the surface of the inner shaft or the outer tube to which the plastic flow resistance material such as unvulcanized rubber is not bonded is used. It is desirable to apply. As the sliding stabilization treatment, for example, a sliding stabilization treatment material such as a silicone primer modified with an amino group or a vinyl group or grease may be applied.

  In addition to fixing by bonding, as shown in FIG. 5, a ring-shaped or sleeve-shaped sealing material 11 that closes the front and rear ends of the cylindrical space 4 is provided to fix the unvulcanized rubber 5. Also good. As a specific structure of the sealing material 11, as shown in FIG. 6A, a sealing material 11A made of a rubber material is interposed between the inner shaft 2 and the outer tube 3, and the inner shaft 2 The structure which adhere | attaches the opposing surface of this is considered. A mortar-shaped tapered surface 12 is formed on the contact surface of the sealing material 11A with the unvulcanized rubber 5, and the outer tube 3 side that is not bonded by guiding the unvulcanized rubber 5 to the inner shaft 2 side. The sealing performance is improved. The adhesion of the sealing material 11A may be performed on the surface facing the outer tube 3, but the tapered surface in that case is opposite (conical) to FIG.

As described above, if the unvulcanized rubber 5 is fixed by the ring-shaped or sleeve-shaped sealing material 11 which is fixed to the inner shaft 2 by closing both ends of the cylindrical space 4, the unvulcanized rubber 5 is fixed. The rubber 5 can be reliably sealed in the cylindrical space 4, and the self-extrusion phenomenon due to the unvulcanized rubber 5 can be suppressed even if shear deformation is repeated.
In particular, the contact surface with the unvulcanized rubber 5 like the sealing material 11A is a taper surface 12 that protrudes toward the unvulcanized rubber 5 side as it is separated from the peripheral edge on the bonding side in the radial direction. Even so, suitable sealing properties can be obtained.
When the sealing material 11 is bonded on one side to the inner shaft 2 or the outer tube 3 in this way, it is desirable to interpose grease between the opposite surfaces of the opposite tube. If grease is interposed, the sealing performance can be maintained even with single-sided adhesion, and slipping can be secured even if a sealing material is provided, and the damping performance is not hindered.

  Table 1 below shows that the silicone-based unvulcanized rubber mainly composed of organopolysiloxane in the form shown in FIG. 5 is accommodated between the inner shaft and the outer tube, and both ends of the cylindrical space are connected to the inner shaft. In a damping damper sealed with a ring-shaped sealing material (rubber seal packing) that is bonded to one side, the temperature dependence and speed dependence were verified. As a comparative example, an acrylic viscoelastic body was used. Each characteristic of the used viscoelastic damper (Comparative Example 1), the viscous damper containing the butane-based polymer material (Comparative Example 2), and the viscoelastic damper using the styrene-based viscoelastic body (Comparative Example 3) Also posted.

  Thereby, compared with the damper using other damping materials, the damper of the present embodiment using unvulcanized rubber has a temperature dependence in the range of 0 ° C. to 40 ° C. and a speed dependence of 0. It was confirmed that the values were the smallest in the range of 5 Hz to 5 Hz.

Further, as the sealing material, as shown in FIG. 6B, a plurality of sealing materials 11B and 11B bonded to the inner shaft 2 can be provided at predetermined intervals in the axial direction. In this case, the space 13 between the sealing materials 11B and 11B may be filled with grease.
On the other hand, as shown in FIG. 6C, a ring-shaped concave groove 14 can be formed on the outer peripheral surface of the sealing material 11C bonded to the inner shaft 2 to form a grease reservoir, which can be filled with grease 15. .
Further, as shown in FIG. 6D, grease 15 can be interposed between the sealing material 11 </ b> D adhered to the inner shaft 2 and the unvulcanized rubber 5. In these cases, the sealing materials 11B to 11D may be bonded to the outer tube 3.

  In addition, when using together grease with a sealing material, as shown in the following Table 2, it is desirable to set it as the combination with low affinity of a sealing material and grease. This is a combination with the grease in the right column (especially the base oil is different) corresponding to the sealing material in the left column.

  However, if self-lubricating rubber is used as the sealing material, grease is not necessary. As this self-lubricating rubber, a general-purpose rubber system (a base polymer selected from NR, IR, IIR, BR, EPM, and EPDM is blended with a bleed component such as an unsaturated fatty acid amide or a polyethylene glycol type surfactant). Vulcanized rubber) and silicone rubber (for example, vulcanized rubber based on dimethyl silicone and mixed with bleed-free phenyl silicones).

On the other hand, as the sealing material, as shown in FIG. 7, a sleeve-shaped sealing material 11E bonded to the inner shaft 2 is provided, and the axial length Y of the sealing material 11E is set to be different from that of the inner shaft 2. It is also conceivable to ensure sealing performance by setting the relative movement distance X to the tube 3 or more.
Further, as shown in FIG. 8 (A), the protrusion 16 projecting in the circumferential direction on the inner peripheral surface of the sealing material 11F is engaged with the ring groove 17 recessed in the outer periphery of the inner shaft 2, or the same. As shown in FIG. (B), a plurality of locking projections 18 projecting from the inner peripheral surface of the sealing material 11G may be penetrated and locked into a through hole 19 provided in the inner shaft 2. In these cases, the protrusions and the locking protrusions may be locked with the outer tube.

Furthermore, the sealing material can be provided with fire resistance by using a flame-retardant rubber or a hard ceramic material.
In addition, the sealing material is not limited to single-sided adhesion to the inner shaft or the outer tube, but if the material has an elasticity of 600% or more, for example, a styrene-based or olefin-based TPE material, each of the inner shaft and the outer tube. You may adhere | attach on an opposing surface.

In addition, the shaft center member is not limited to the shaft body, and may be a plate shape or a cylindrical shape, and is not limited to a mode in which one shaft center member and one exterior member are provided. It is also possible to package the cylindrical exterior member coaxially and in a non-contact manner, and store the plastic flow resistance material in the cylindrical space between the respective exterior members in the same manner by using an adhesive or a sealing material. it can. In this case, every other set of exterior members from the shaft member and every other set of exterior members are joined to the same side.
In addition, the installation form of the damping damper on the frame can be reversed by attaching the inner shaft side and the outer tube side, or installing multiple damping dampers in an X shape diagonally, or a pair of upper and lower damping dampers. It is possible to change the design as appropriate, such as erection in a so-called K-shape that connects to the intermediate part of one pillar.

  1, 1A to 1C ··· Damping damper, 2 ·· Inner shaft, 3 ·· Outer tube, 4 ·· Cylindrical space, 5 ·· Unvulcanized rubber, 6 ·· Adhesive layer, 7, 9 ·· Half Split metal fittings, 8, 10 ... Flange, 11, 11A to E ... Sealing material, 12 ... Tapered surface, 13 ... Space, 14 ... Groove, 15 ... Grease, 16 ... Projection, 17 .. Ring groove, 18 .. Locking projection, 19 .. Through hole, 20 .. Frame, 21 .. Column, 22 .. Horizontal member, 23 .. Gusset plate, 24.

Claims (4)

One or a plurality of cylindrical exterior members are coaxially and non-contactedly mounted on the shaft-shaped or cylindrical shaft center member, and the inner circumferential side is formed in a cylindrical space formed between the respective members adjacent in the radial direction. wherein between the shaft center member or the outer member of the outer member and the outer peripheral side, a seismic control dampers containing the unvulcanized rubber,
The unvulcanized rubber is bonded to either the shaft member on the inner peripheral side or the exterior member and the exterior member on the outer peripheral side, and a sliding stabilization process is performed on the surface of the other member. While giving
An anti-seismic damper characterized in that a ring-shaped or cylindrical sealing material that closes both ends of the cylindrical space and is bonded to the one member is provided. One or a plurality of cylindrical exterior members are coaxially and non-contactedly mounted on the shaft-shaped or cylindrical shaft center member, and the inner circumferential side is formed in a cylindrical space formed between the respective members adjacent in the radial direction. wherein between the shaft center member or the outer member of the outer member and the outer peripheral side, a seismic control dampers containing the unvulcanized rubber,
The housing of the unvulcanized rubber is closed at both ends of the cylindrical space, and is adhered to either the shaft member on the inner peripheral side or the exterior member and the exterior member on the outer peripheral side. performs the ring-shaped or tubular sealing member, the contact surface between the unvulcanized rubber in the sealing member, the protruding into unvulcanized rubber side with distance from the peripheral edge of the adhesive side to the radially Damping damper with a tapered surface. The damping damper according to claim 2, wherein grease is interposed between opposing surfaces of the sealing material and the other member to which the sealing material is not bonded . The unvulcanized rubber, Seismic damper according to any one of claims 1 to 3, characterized in that as the polyorganosiloxane main component was above plasticity 200.

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