JP2008144447A - Vibration control damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simply formed and easily installable vibration control damper. <P>SOLUTION: Since a deformation member 12 is twisted and plastically deformed, this damper 10 damps the vibration by the hysteresis damping due to plastical deformation, and develops a stable damping performance. Since a groove part 18 on which a torsional stress is concentrated is formed, even if the deformation member 12 is formed of a single member, the damper can stably develop the damping performance. Since the deformation member 12 can be formed of a single member, it is simple in structure and its installation is facilitated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibration damper.

  A damper disclosed in Patent Document 1 is known as a damping damper that damps vibrations and suppresses vibration. In the damper of Patent Document 1, arms are pivotally supported by two members that intersect each other, and the arms are rotatably coupled via a viscoelastic body. Furthermore, in the damper of Patent Document 1, a vibration damping function is exhibited by fixing a surface member or a cylindrical body and a shaft body to an arm and interposing a viscoelastic body therebetween.

JP 2006-90486 A

However, the damper of Patent Document 1 has a problem that the structure is complicated and it takes time to mount.
In view of the above facts, the present invention has an object to provide a vibration damper having a simple structure and easy mounting.

  A vibration damper according to claim 1 of the present invention is formed of a single material and is capable of torsional deformation, a first coupling member that couples the deformation member to a first member, and the first member. A second coupling member that couples the deformable member to a second member that is relatively deformed and causes torsional deformation of the deformable member in association with relative deformation of the first member and the second member; and an outer periphery of the deformable member And a fragile portion that concentrates the torsional stress.

According to this configuration, the deformable member is coupled to the first member by the first coupling member, and is coupled to the second member that is deformed relative to the first member by the second coupling member. Torsional deformation occurs with relative deformation with the member.
Torsional stress generated when the deformable member undergoes torsional deformation concentrates on the fragile portion formed on the outer periphery of the deformable member. Thereby, the vibration which arises in a 1st member and a 2nd member is attenuated, and the stable damping performance is exhibited.
Here, in the structure of Claim 1, even if it forms a deformation | transformation member with a single material by forming a weak part, it becomes possible to exhibit damping performance stably. As described above, since the deformable member is formed of a single material, the structure is simplified and the attachment thereof is facilitated.

The vibration damper according to a second aspect of the present invention is characterized in that, in the configuration of the first aspect, the weakened portion is a groove portion formed on an outer periphery of the deformable member.
According to this structure, a weak part can be formed easily.
A vibration damper according to a third aspect of the present invention is characterized in that, in the configuration of the second aspect, the groove portion is formed in a single strip at the axially central portion of the deformable member.
According to this configuration, the torsional stress is concentrated at the axially central portion of the deformable member, thereby exhibiting stable vibration damping performance.

A vibration damper according to a fourth aspect of the present invention is characterized in that, in the configuration of any one of the first to third aspects, the deformable member has a cylindrical shape.
According to this configuration, the deformable member can be easily formed, and the occurrence of torsional deformation becomes uniform, so that stable vibration damping performance is exhibited.

The vibration damper according to a fifth aspect of the present invention is the vibration damper according to any one of the first to fourth aspects, wherein the deformable member is made of aluminum, copper, an aluminum-zinc alloy, a Sn-Bi alloy, or a Sn-In alloy. Or it consists of a Sn-Sb alloy, It is characterized by the above-mentioned.
Thus, by optimizing the material of the deformable member, the deformable member is efficiently torsionally deformed and exhibits stable vibration damping performance.

A vibration damper according to a sixth aspect of the present invention is characterized in that, in the configuration of any one of the first to fourth aspects, the deformable member is made of a PET-based resin, a polyethylene resin, a polypropylene resin, or a PTFE resin. To do.
Thus, by optimizing the material of the deformable member, the deformable member is efficiently torsionally deformed and exhibits stable vibration damping performance.

The vibration damper according to a seventh aspect of the present invention is the vibration damper according to any one of the first to sixth aspects, wherein the first coupling member couples the outer peripheral surface of the deformable member and the first member, A 2nd coupling member couple | bonds the outer peripheral surface of the said deformation member, and the said 2nd member, It is characterized by the above-mentioned.
According to this configuration, it becomes easy to attach the vibration damper.

A vibration damper according to an eighth aspect of the present invention is the vibration damper according to any one of the first to sixth aspects, wherein the first coupling member couples one end surface in the axial direction of the deformable member and the first member. The second coupling member couples the other end surface in the axial direction of the deformable member and the second member.
According to this configuration, it becomes easy to attach the vibration damper.

  Since the present invention has the above-described configuration, it is possible to provide a vibration damper that has a simple structure and is easy to mount.

Below, an example of an embodiment concerning the present invention is described based on a drawing.
FIG. 1 is a schematic view showing the configuration of the vibration damper according to the present embodiment.
The vibration damper 10 according to the present embodiment is used, for example, at a junction between a column and a beam in a wall of a wooden detached house, and attenuates vibration generated in the column and the beam to suppress vibration. .

As shown in FIG. 1, the vibration damper 10 includes a deformable member 12 that can be torsionally deformed. The deformable member 12 is torsionally deformed around a predetermined axis.
The deformable member 12 is formed in a cylindrical shape elongated in the axial direction, and the cross-sectional shape when cut along a plane perpendicular to the axial direction is circular. In FIG. 1, the axis of the deformable member 12 is indicated by a one-dot chain line S.

  Further, as shown in FIG. 2A, the deformable member 12 is disposed at a joint portion between a column 50 as an example of a first member and a beam 52 as an example of a second member that is deformed relative to the first member. Has been. Specifically, the column 50 and the beam 52 are arranged at corners formed by crossing. Further, the deformable member 12 is arranged so that the axial direction of the deformable member 12 is a direction orthogonal to the column 50 and the beam 52.

In addition, the deformable member 12 is disposed at a position where the distance between the central axis C (see FIG. 3A), which is the rotation center when the column 50 and the beam 52 are relatively deformed, and the axis S of the deformable member 12 is short. It is desirable that In the present embodiment, the outer peripheral surface of the deformable member 12 is disposed in contact with the column 50 and the beam 52, and the central axis C and the axis S of the deformable member 12 are close to each other.
The length of the deformable member 12 in the axial direction is the same as the smaller thickness of the column 50 and the beam 52, and is generally 105 mm to 300 mm.

  The deformable member 12 is formed of a single material. As a material of the deformable member 12, for example, a metal material such as aluminum, copper, an aluminum-zinc alloy, a Sn—Bi alloy, a Sn—In alloy, or a Sn—Sb alloy is used. These materials have a relatively low yield stress compared to other metal materials, and are suitable for the material of the deformable member 12. Moreover, as a material of the deformable member 12, for example, a polymer material such as a PET resin, a polyethylene resin, a polypropylene resin, or a PTFE resin is used.

  The deformable member 12 is not limited to a cylindrical shape, and may be, for example, a prismatic shape or a rod shape elongated in the axial direction, and may be any member that can be torsionally deformed. In addition, if it is formed in a rod shape, torsional deformation occurs efficiently, which is suitable for the deformable member 12.

As shown in FIGS. 1 and 2A, a first coupling member 14 that couples the deformable member 12 to a column 50 as an example of the first member is provided at one end of the deformable member 12 in the axial direction. .
A second coupling member 16 that couples the deformable member 12 to a beam 52 as an example of a second member is provided at the other axial end of the deformable member 12.

  The first coupling member 14 is formed in a plate shape, and is fixed to one axial end surface of the deformation member 12. A plurality of through holes 14A are formed in the first coupling member 14, and the first coupling member 14 is fixed to the column 50 by screws, nails, etc. inserted through the through holes 14A as shown in FIG. Is done. Thereby, the one axial end surface of the deformable member 12 and the column 50 are coupled.

  Similarly to the first coupling member 14, the second coupling member 16 is formed in a plate shape, and is fixed to the other axial end surface of the deformable member 12. A plurality of through holes 16A are also formed in the second coupling member 16, and the second coupling member 16 is fixed to the beam 52 by screws, nails or the like inserted through the through holes 16A. Thereby, the other axial end surface of the deformable member 12 and the beam 52 are coupled.

As described above, the second coupling member 16 couples the deformable member 12 to the beam 52 that relatively deforms with the column 50, thereby causing torsional deformation in the deformable member 12 with the relative deformation of the column 50 and the beam 52. It is configured as follows.
In addition, the 1st coupling member 14 and the 2nd coupling member 16 may be formed with the same material as the deformation member 12, and may be formed with another material. Moreover, the 1st coupling member 14 and the 2nd coupling member 16 may be formed integrally with the deformation member 12, and may be formed separately.

Further, on the outer periphery of the deformable member 12, a groove portion 18 is formed as an example of a fragile portion that concentrates torsional stress. The groove portion 18 is formed at the central portion in the axial direction of the deformation member 12 over the entire circumference along the circumferential direction of the deformation member 12. Thereby, the diameter of the deformation member 12 in the groove part 18 is made smaller than the area of an axial direction one end surface and the other end surface.
In addition, the groove part 18 does not necessarily need to be the center part of the deformation member 12 in the axial direction, and may be formed in a plurality of strips.

(Operation of the damping damper 10 according to the present embodiment)
Next, the operation of the vibration damper 10 according to this embodiment will be described.
When vibration is generated in the column 50 and the beam 52 due to an earthquake or traffic vibration, the column 50 and the beam 52 are relatively deformed as shown in FIG. 2B, and the relative angle θ of the column 50 with respect to the beam 52 changes. (See FIGS. 3A, 3B, and 3C).

Thereby, a rotational moment of the column 50 with respect to the beam 52 is generated, and the rotational member causes torsional deformation to the deformation member 12 through the first coupling member 14 and the second coupling member 16.
In addition, since the central axis C serving as the rotation center of the rotation moment and the axis of the deformation member 12 are close to each other, the rotation moment is efficiently converted into a torsional force that twists and deforms the deformation member 12. Torsional stress generated when the deformable member 12 undergoes torsional deformation is concentrated in the groove portion 18 formed on the outer periphery of the deformable member 12.

When the relative angle θ does not exceed the predetermined value, the deformation of the deformation member 12 is suppressed by the torsional rigidity of the material of the deformation member 12. On the other hand, when the relative angle θ exceeds a predetermined value, the deformable member 12 is twisted and plastically deformed, and the vibration is suppressed by the hysteresis damping associated with the plastic deformation, thereby exhibiting stable vibration control performance.
Here, in the configuration of the present embodiment, by forming the groove portion 18, even if the deformable member 12 is formed of a single material, it is possible to stably exhibit the vibration damping performance. As described above, since the deformable member 12 can be formed of a single material, the structure is simplified and the attachment thereof is facilitated.

  Moreover, since the damping damper 10 according to the present embodiment attenuates vibrations by torsional deformation, for example, the apparatus itself can be made smaller than a configuration in which vibrations are attenuated by shear deformation of rubber or the like. Since the vibration damping damper 10 itself can be reduced in size, the damping damper 10 can be installed at the corner between the column 50 and the beam 52 as in the present embodiment, and is occupied by the damping damper 10. Space can be reduced.

In addition, special technical skill is not required to install the vibration damper 10 according to the present embodiment, and the vibration damper 10 can be easily installed by a nail, a screw, or the like.
Further, in the vibration damper 10 according to the present embodiment, the torsional rigidity can be adjusted according to the size of the columnar shape of the deformable member 12 and the depth of the groove portion 18, so that it can be applied to a wide variety of houses.
In addition, a plurality of damping dampers 10 according to the present embodiment may be installed, and the damping effect can be adjusted depending on the number of installed damping dampers 10.

(Modification of the vibration damper 10 according to the present embodiment)
Next, a modified example in which the vibration damper 10 according to the above embodiment is modified will be described.
In the vibration damper 20 according to the modified example, as shown in FIG. 4, a first coupling member 24 that couples the deformable member 12 to the column 50 is provided on the outer peripheral surface of the deformable member 12. A second coupling member 26 that couples the deformable member 12 to the beam 52 is provided on the outer peripheral surface of the deformable member 12.

  The first coupling member 24 is formed in a plate shape, and a plurality of through holes 24A are formed in the first coupling member 24, and screws or nails inserted through the through holes 24A are used in FIG. As shown, the first coupling member 24 is fixed to the column 50. As a result, the outer peripheral surface of the deformable member 12 (the outer peripheral surface on the one end side in the axial direction when viewed from the groove portion 18) and the column 50 are coupled.

  Similarly to the first coupling member 24, the second coupling member 26 is also formed in a plate shape. The second coupling member 26 is also formed with a plurality of through holes 26A, and screws or nails inserted through the through holes 26A. Thus, the second coupling member 26 is fixed to the beam 52. As a result, the outer peripheral surface of the deformable member 12 (the outer peripheral surface on the other end side in the axial direction when viewed from the groove portion 18) and the column 50 are coupled.

That is, the first coupling member 24 and the second coupling member 26 couple the deformable member 12 to the column 50 and the beam 52 with the groove 18 therebetween, and between the first coupling member 24 and the second coupling member 26. A groove portion 18 is formed in the groove.
As described above, the second coupling member 26 couples the deformable member 12 to the beam 52 that relatively deforms with the column 50, thereby causing the deformable member 12 to twist and deform with the relative deformation of the column 50 and the beam 52. It is configured as follows.

  In the modification, the first coupling member 24 and the second coupling member 26 are formed integrally with the deformation member 12. The second coupling member 26 and the second coupling member 26 may be formed separately from the deformable member 12 or may be formed of a material different from that of the deformable member 12.

(Operation of the damping damper 20 according to the modification)
Next, the effect | action of the damping damper 20 which concerns on a modification is demonstrated.
In the vibration damping damper 20 according to the modified example, as shown in FIG. 5B, when the vibration is generated in the column 50 and the beam 52 due to an earthquake or traffic vibration, the column 50 and the beam 52 are illustrated. And the relative angle θ of the column 50 with respect to the beam 52 changes (see FIGS. 6A, 6B, and 6C).

Thereby, a rotational moment of the column 50 with respect to the beam 52 is generated, and the rotational member causes torsional deformation in the deformable member 12 through the first connecting member 24 and the second connecting member 26.
In addition, since the central axis C serving as the rotation center of the rotation moment and the axis of the deformation member 12 are close to each other, the rotation moment is efficiently converted into a torsional force that twists and deforms the deformation member 12. Torsional stress generated when the deformable member 12 undergoes torsional deformation is concentrated in the groove portion 18 formed on the outer periphery of the deformable member 12.

When the relative angle θ does not exceed the predetermined value, the deformation of the deformation member 12 is suppressed by the torsional rigidity of the material of the deformation member 12. On the other hand, when the relative angle θ exceeds a predetermined value, the deformable member 12 is twisted and plastically deformed, and the vibration is suppressed by the hysteresis damping associated with the plastic deformation, thereby exhibiting stable vibration control performance.
Also in the configuration of the modified example, by forming the groove portion 18, even if the deformable member 12 is formed of a single material, it is possible to stably exhibit the vibration damping performance. As described above, since the deformable member 12 can be formed of a single material, the structure is simplified and the attachment thereof is facilitated.

As shown in FIGS. 7A and 7B, the vibration damper 10 according to the above embodiment (see FIG. 1) and the vibration damper 20 shown in the modification may be combined. .
Further, the fragile portion for concentrating the torsional stress is not limited to the groove portion 18, and may be a plurality of holes arranged on the outer periphery of the deformable member 12 along the circumferential direction of the deformable member 12.

Further, as shown in FIG. 8, the deformable member 12 may be configured such that the diameter gradually decreases from both axial end portions toward the central portion, and in this configuration, the smallest diameter portion of the deformable member 12 is fragile. Part.
Moreover, although the damping damper 10 which concerns on this embodiment, and the damping damper 20 which concerns on a modification were used for the junction part of the pillar and beam in the wall of a wooden detached house, in structures, such as a building The structure used for the joint part of the two members that deform relative to each other may be used.
The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made.

FIG. 1 is a perspective view showing a configuration of a vibration damper according to an embodiment of the present invention. FIG. 2A is a diagram showing an example in which the vibration damper according to the present embodiment is used for a joint between a column and a beam, and FIG. 2B is a diagram in which the column and the beam in FIG. It is a figure which shows the state which carried out the relative deformation | transformation. FIG. 3A is a diagram illustrating a column and a beam joint in which the damping damper according to the present embodiment is arranged. FIGS. 3B and 3C are diagrams illustrating a column in FIG. It is a figure which shows the state which the beam and the relative deformation | transformation carried out. FIG. 4 is a perspective view showing a configuration of a modified example of the vibration damper according to the present embodiment. FIG. 5A is a diagram showing an example in which the vibration damper according to the modification is used for a joint between a column and a beam, and FIG. 5B is a diagram in which the column and the beam are relative to each other in FIG. It is a figure which shows the state which deform | transformed. FIG. 6A is a diagram illustrating a column and a beam joint in which a vibration damper according to a modified example is disposed. FIGS. 6B and 6C are diagrams illustrating a column and a beam in FIG. It is a figure which shows the state which the beam deformed relatively. FIG. 7 is a diagram illustrating an example in which the vibration damper according to the present embodiment and the vibration damper according to the modification are applied in combination. FIG. 8 is a perspective view showing a modification of the deformation member of the vibration damper according to the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Damping damper 12 Deformation member 14 1st coupling member 16 2nd coupling member 18 Groove part 20 Damping damper 24 1st coupling member 26 2nd coupling member 50 Column (1st member)
52 Beam (second member)

Claims (8)

A deformable member formed of a single material and capable of torsional deformation;
A first coupling member that couples the deformable member to the first member;
A second coupling member that couples the deformable member to a second member that is relatively deformed with the first member, and causes torsional deformation of the deformable member in accordance with relative deformation of the first member and the second member;
Formed on the outer periphery of the deformable member, and a weakened portion for concentrating torsional stress;
Damping damper characterized by having   The vibration damper according to claim 1, wherein the fragile portion is a groove portion formed on an outer periphery of the deformable member.   3. The vibration damper according to claim 2, wherein the groove is formed in a single strip in the axially central portion of the deformable member.   The damping damper according to any one of claims 1 to 3, wherein the deformable member has a cylindrical shape.   5. The vibration damping device according to claim 1, wherein the deformable member is made of aluminum, copper, an aluminum-zinc alloy, a Sn—Bi alloy, a Sn—In alloy, or a Sn—Sb alloy. Damper.   The vibration damper according to any one of claims 1 to 4, wherein the deformable member is made of a PET resin, a polyethylene resin, a polypropylene resin, or a PTFE resin. The first coupling member couples the outer peripheral surface of the deformable member and the first member;
The damping damper according to any one of claims 1 to 6, wherein the second coupling member couples the outer peripheral surface of the deformable member and the second member. The first coupling member couples the first member and the first end surface in the axial direction of the deformation member,
The damping damper according to any one of claims 1 to 6, wherein the second coupling member couples the other end surface in the axial direction of the deformable member and the second member.

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