JP5127069B2 - Damper for energy absorption - Google Patents

Description

  The present invention relates to an energy absorbing damper that absorbs energy such as earthquakes and prevents the destruction of structures such as buildings and bridges.

  Oil dampers, air dampers, viscoelastic dampers and the like have been developed as energy absorbing dampers for absorbing energy such as earthquakes.

JP 2007-278411 A JP 2007-138670 A JP 2007-85068 A

  However, oil dampers, air dampers, viscoelastic dampers, and the like as conventional energy absorbing dampers have a problem that they have a complicated structure, are expensive, and require regular maintenance.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an energy absorbing damper having a simple structure, a small number of parts, easy installation, high energy absorption performance, and low cost.

  In order to solve the above-described problems, the first aspect of the present invention provides a first member that is displaced according to a stress applied to the energy absorbing damper, and the first member that is displaced according to the displacement of the first member. A plurality of second members divided in a circumferential direction that is displaced in a direction different from the displacement direction, and a third member that guides the displacement of the plurality of second members, the plurality of second members A ring-shaped rubber-based elastic member is disposed outside the member.

  The second invention is characterized in that in the energy absorbing damper of the first invention, a ring-shaped restraining member is disposed outside the ring-shaped rubber-based elastic member.

  According to a third aspect of the present invention, in the energy absorbing damper according to the first or second aspect, an inclined surface is formed at an end of the first member, and the first member is disposed inside the plurality of second members. An inclined surface that engages with the inclined surface of the first member is formed, and the direction of displacement of the second member is changed to a direction different from the direction of displacement of the first member according to the angle of inclination of the inclined surface. .

  According to a fourth aspect of the present invention, in the energy absorbing damper according to any one of the first to third aspects of the present invention, an elongated hole extending in the displacement direction is formed in the plurality of second members, and one end is fixed to the third member. The guide pin is disposed in the elongated hole.

  The fifth aspect of the present invention is the energy absorbing damper according to any one of the first to fourth aspects of the present invention, wherein the third member is provided with a space in the displacement direction of the first member, and a bottom plate is provided in the space. And the bottom plate and the end of the first member are connected by an elastic connecting member capable of elastic deformation.

The first member that is displaced according to the stress applied according to the present invention and the circumferential direction that is displaced in a direction different from the displacement direction of the first member according to the displacement of the first member. With a configuration in which a plurality of second members and a third member for guiding the displacement of the plurality of second members are provided, and a ring-shaped rubber-based elastic member is disposed outside the plurality of second members, Since the stress input to the first member is transmitted to the second member divided into a plurality of parts and can be absorbed by the tensile force of the ring-shaped rubber-based elastic member disposed on the outer periphery of the second member, the structure However, it is possible to provide an energy absorption damper that is compact and easy to install and has high energy absorption.
With the configuration in which the ring-shaped restraining member is arranged outside the ring-shaped rubber-based elastic member, the stress input to the first member is transmitted to the second member divided into a plurality of parts, and the second member Since it can be absorbed by the compression force of the ring-shaped rubber-based elastic member constrained by the ring-shaped constraining member arranged on the outer periphery, it is possible to provide an energy absorbing damper having a compact structure and easy installation. it can.
An inclined surface is formed at an end of the first member, an inclined surface that engages with the inclined surface of the first member is formed inside the plurality of second members, and the inclined surface is in accordance with the inclination angle of the inclined surface. By changing the direction of displacement of the second member to a direction different from the direction of displacement of the first member, the direction of displacement can be converted with a simple configuration, so that a compact energy absorbing damper can be obtained.
By forming a long hole extending in the displacement direction in the plurality of second members and arranging a guide pin having one end fixed to the third member in the long hole, the displacement of the second member can be reliably guided. .
The third member is provided with a space in the displacement direction of the first member, a bottom plate is disposed in the space, and the bottom plate and the end of the first member are connected by an elastic connecting member capable of elastic deformation. According to the configuration, the displacement force of the first member can be absorbed by elastic deformation of the elastic connecting member.

It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a first embodiment of the energy absorbing damper of the present invention, and FIG. 2 is a plan view.

  The energy absorbing damper 1 of the present invention includes a first member 2 that is displaced in response to stress such as vibration or impact. The first member 2 is formed as a truncated cone-shaped member, and has a planar input portion 3 in which stress is applied to one end, and a displacement force corresponding to the stress input to the other end. An inclined displacement force transmission inclined portion 4 for transmitting to the second member 5 is provided. In the first embodiment shown in FIGS. 1 and 2, the displacement force transmission inclined portion 4 has a conical shape, but may be a polygonal cone. The planar input unit 3 is fixed to one member such as a structure that is relatively displaced.

  The second member 5 that receives a displacement force corresponding to the stress from the displacement force transmission inclined portion 4 of the first member 2 and is displaced in a direction different from the displacement direction of the first member 2 is divided in the circumferential direction. It is composed of a plurality of members. In the first embodiment shown in FIG. 2, the second member 5 is divided into four parts in the circumferential direction, but the number of divisions is not limited to this. At the inner end of the second member 5, an inclined input portion 6 that is engaged with the displacement force transmission inclined portion 4 of the first member 2 is formed. By changing the inclination angle of the displacement force transmission inclined portion 4 of the first member 2 and the inclination angle of the inclination input portion 6 of the second member, the displacement direction of the second member can be changed.

  A ring-shaped rubber-based elastic member 8 is disposed on the outer end 7 of the plurality of second members 5. It is desirable that the outer end portions 7 of the plurality of second members 5 form arcuate grooves for accommodating the rubber-based elastic members 8 on the ring.

  A long hole 9 extending in the displacement direction of the second member 5 is formed through the front and back surfaces of the plurality of second members 5. A step portion 10 is formed along the long hole 9 on the front surface of the long hole 9.

  The third member 11 includes a surface 12 that forms a slide surface with the back surface of the second member 5. A central space 13 is formed at a position corresponding to the displacement direction of the first member 2 of the third member 11. The void 13 is positioned in the displacement direction of the first member 2 to ensure the amount of displacement of the first member 2. A bottom plate 14 may be disposed at the bottom of the space 13 and the bottom plate 14 and the distal end of the displacement force transmission inclined portion 4 of the first member 2 may be connected by an elastic connecting member 15 that can be elastically deformed. The elastic connecting member 15 is rubber, a spring, or the like. The elastic connecting member 15 has a function of elastically deforming and absorbing the displacement force of the first member 2.

  One end of the guide pin 16 is fixed to the surface 12 of the third member 11. The guide pin 16 is positioned in the long hole 9 formed in the second member 5, and has a large diameter portion 17 at the head thereof. The large diameter portion 17 is formed along the step portion 14 formed along the long hole 9. The second member 5 and the third member 11 are engaged with each other and function to prevent them from coming off. The depth of the stepped portion 14 is a depth at which the head of the guide pin 16 does not protrude from the surface of the second member. When the second member 5 is displaced using the surface 12 of the third member 11 as a slide surface, the long hole 9 and the guide pin 16 function as a guide member for the second member 5. The back surface 18 of the third member is fixed to the other member such as a structure that is relatively displaced.

  The operation of the energy absorbing damper 1 of the first embodiment will be described. When stress due to an earthquake or the like is applied to the input part 3 of the first member 2 fixed to one of the members that relatively displace the structure, the first member 2 is displaced according to the stress. The displacement force accompanying the displacement of the first member 2 is transmitted to the plurality of second members 5 through the engagement of the displacement force transmission inclined portion 4 and the inclined input portion 6 of the second member 5. The plurality of second members 5 are displaced in a direction different from the displacement direction of the first member 5 according to the inclination angle of the displacement force transmission inclined portion 4 and the inclined input portion 6 of the first member 2. Part of the energy input by the friction caused by the sliding between the displacement force transmission inclined portion 4 of the first member 2 and the inclined input portion 6 of the second member 5 is absorbed.

  Part of the energy input by the friction associated with the sliding between the second member 5 and the surface 12 of the third member 11 is absorbed. Furthermore, the energy input by the elastic deformation of the elastic connecting member 15 accompanying the displacement of the first member 2 is absorbed. It is the ring-shaped rubber-based elastic member 8 arranged on the outer periphery of the plurality of second members 5 that absorbs the most input energy. The ring-shaped rubber-based elastic member 8 absorbs the displacement force of the second member 5 by a tensile force.

  FIG. 3 is a cross-sectional view of a second embodiment of the energy absorbing damper of the present invention, and FIG. 4 is a plan view.

  The energy absorbing damper 1 according to the second embodiment of the present invention has a configuration other than the configuration in which the ring-shaped restraining member 19 is disposed on the outer periphery of the ring-shaped rubber-based elastic member 8. Since it is the same as that of the energy absorbing damper of the embodiment, the description thereof is omitted.

  The operation of the energy absorbing damper 1 of the second embodiment will be described. When stress due to an earthquake or the like is applied to the input part 3 of the first member 2 fixed to one of the members that relatively displace the structure, the first member 2 is displaced according to the stress. The displacement force accompanying the displacement of the first member 2 is transmitted to the plurality of second members 5 through the engagement of the displacement force transmission inclined portion 4 and the inclined input portion 6 of the second member 5. The plurality of second members 5 are displaced in a direction different from the displacement direction of the first member 5 according to the inclination angle of the displacement force transmission inclined portion 4 and the inclined input portion 6 of the first member 2. Part of the energy input by the friction caused by the sliding between the displacement force transmission inclined portion 4 of the first member 2 and the inclined input portion 6 of the second member 5 is absorbed.

  Part of the energy input by the friction associated with the sliding between the second member 5 and the surface 12 of the third member 11 is absorbed. Furthermore, the energy input by the elastic deformation of the elastic connecting member 15 accompanying the displacement of the first member 2 is absorbed. The ring-shaped rubber-based elastic member 8 that absorbs the most input energy is arranged on the outer periphery of the plurality of second members 5 and is restrained from deforming outward by the ring-shaped restraining member 19. The ring-shaped rubber-based elastic member 8 whose outward deformation is constrained by the ring-shaped constraining member 19 absorbs the displacement force of the second member 5 by the compressive force.

  As described above, in the first embodiment of the present invention, energy is absorbed by the tensile force of the ring-shaped rubber-based elastic member 8, and in the second embodiment of the present invention, the ring-shaped rubber-based elastic member 8 is used. Energy is absorbed by the compression force of.

  The energy absorbing damper of the present invention is a low-cost energy absorbing damper having a compact structure, a small number of parts, easy installation on a structure and high energy absorption.

  1: Damper for energy absorption, 2: First member, 3: Input part, 4: Displacement force transmission inclined part, 5: Second member, 6: Inclined input part, 7: Outer end part, 8: Ring shape 9: long hole, 10: stepped portion, 11: third member, 12: surface, 13: void, 14: bottom plate, 15: elastic connecting member, 16: guide pin, 17: large Diameter part, 18: Back surface, 19: Ring-shaped restraining member

Claims (5)

A first member that is displaced according to a stress applied thereto, and a plurality of second members that are divided in a circumferential direction that is displaced in a direction different from a displacement direction of the first member according to a displacement of the first member. 2 and a third member that guides the displacement of the plurality of second members, and a ring-shaped rubber-based elastic member is disposed outside the plurality of second members. Absorption damper. The energy absorbing damper according to claim 1, wherein a ring-shaped restraining member is disposed outside the ring-shaped rubber-based elastic member. An inclined surface is formed at an end of the first member, an inclined surface that engages with the inclined surface of the first member is formed inside the plurality of second members, and according to an inclination angle of the inclined surface. The energy absorbing damper according to claim 1 or 2, wherein the direction of displacement of the second member is changed to a direction different from the direction of displacement of the first member. 4. A long hole extending in a displacement direction is formed in the plurality of second members, and a guide pin having one end fixed to the third member is disposed in the long hole. Damper for energy absorption as described in 1. The third member is an elastic connecting member that provides a space in the displacement direction of the first member, disposes a bottom plate in the space, and elastically deforms the bottom plate and the end of the first member. It connects, The damper for energy absorption in any one of Claims 1-4 characterized by the above-mentioned.

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