KR20190091131A - Automatic Restoration and Self-Healing Damper System Utilizing Smart Material - Google Patents

Abstract

Disclosed is a damper system. According to the present invention, the damper system comprises: a guide unit having a predetermined length in accordance with a virtual load application line parallel to a direction in which tensile or compressive force is applied; a first moving unit coupled to one side of the guide unit and reciprocating in parallel to the load application line; a second moving unit spaced from the first moving unit, coupled to one side of the guide unit and reciprocating in parallel to the load application line; a deformation unit made of shape memory alloy to connect the first and second moving units and extended or restored in a direction perpendicular to the load application line; an operation unit pulling the second moving unit to allow the second moving unit to be distant from the first moving unit and pushing the first moving unit to allow the first moving unit to be distant from the second moving unit; a first elastic body made of a polyurethane elastic body and compressed and deformed when the operation unit pushes the first moving unit; and a second elastic body made of a polyurethane elastic body and compressed and deformed when the operation unit pulls the second moving unit, wherein the deformation unit is extended when the first and second moving units are separated. Accordingly, when each of tensile and compressive forces is applied to both ends of a damper device, the deformation unit is extended, such that deformation of the deformation unit is easily predicted, thereby facilitating design of a damper device for shock absorption and vibration and deformation control and providing a damper device of a stable structure. Super-elastic shape memory alloy and self-healing thermoplastic polyurethane are included, thereby providing a damper device capable of maximizing shock absorption and restoration effects.

Description

Damper system using smart materials capable of automatic restoration and self-healing {Automatic Restoration and Self-Healing Damper System Utilizing Smart Material}

The present invention relates to a damper device, and more particularly, to a damper device is installed in the structure and facilities to prevent damage to the structure due to vibration reduction and impact, while being capable of automatic restoration in a circular shape.

In general, building structures must be seismically designed to protect from earthquakes. In particular, since the damage caused by the collapse of the structure is enormous when an earthquake occurs, it is essential to reinforce the strength and the seismic resistance of the structure by installing a vibration isolator in the framework such as columns and beams in order to resist the earthquake load.

Therefore, in the building structure, a vibration suppression system including a vibration suppression apparatus is installed for the seismic reinforcement, and the vibration suppression apparatus provided in the vibration suppression system mainly includes a damper and a brace. The damper is mainly used a friction damper that absorbs the external force applied to the brace by the relative movement of the friction surface.

Friction dampers exhibit a damping performance proportional to the area of the load-displacement hysteresis curve, and are usually installed in the region where displacement is greatest in the damping device. That is, since the friction damper has a greater frictional force and relative movement distance of the friction surface, the greater the energy absorption capability, so it is very important to determine the frictional force and relative movement distance generated on the friction surface when the friction damper is manufactured.

On the other hand, the conventional friction damper is manufactured to have a fixed value of the frictional force and the relative movement distance generated on the friction surface. However, the brace bonded to the building structure may be applied with a compressive force or a tensile force having a different size depending on the site and the coupling form to which the brace is coupled, and the amount of displacement may be required differently.

Therefore, the conventional friction damper can be adjusted even when the friction force and relative movement distance generated on the friction surface by the external force are fixed for each friction damper, even when the difference is compared with the amount of energy absorption or displacement required for the actual friction damper. There was a problem that is installed as it is.

In addition, since the friction damper once absorbs the external force applied to the brace, it maintains a state in which relative movement is generated on the friction surface, and thus there is a problem in that a huge cost is spent in the process of replacing or repairing the friction damper.

(0001) Republic of Korea Patent Registration No. 10-1661758 (Registration Date: 2016.09.26) (0002) Republic of Korea Patent No. 10-1724535 (Registration Date: 2017.04.03)

An object of the present invention is to be automatically restored to a circular shape after deformation occurs by the load applied to the structure, excellent shock absorption, vibration and displacement control, easy to control the amount of energy absorption required as a friction damper, stable It is to provide a damper device having a structure.

The object is a guide unit having a predetermined length along an imaginary load action line parallel to the direction in which the tensile or compressive force acts; A first moving unit coupled to one side of the guide unit and reciprocating in parallel with the load action line; A second moving unit spaced apart from the first moving unit and coupled to one side of the guide unit and reciprocating in parallel with the load action line; A deformation unit made of a shape memory alloy to connect the first moving unit and the second moving unit and to be tensioned and recovered along a direction parallel to the load action line; An operation unit configured to pull the second mobile unit to move the second mobile unit away from the first mobile unit, and to push the first mobile unit to move the first mobile unit away from the second mobile unit; A first elastic body made of a polyurethane elastic body and compressively deformed when the operating unit pushes the first moving unit; And a second elastic body which is made of a polyurethane elastic body and which is compressively deformed when the operating unit pulls the second moving unit, and when the first moving unit and the second moving unit move away from each other, It is achieved by a damper device characterized in that the tension.

In the damper device according to the present invention, the guide unit may include a first guide wall having a first guide hole having one side facing the first moving unit and parallel to the load action line, and one side moving the second guide wall. And a second guide wall facing the unit and having a second guide hole parallel to the load action line, wherein the first moving unit comprises: a first moving wall parallel to the first guide wall and the first moving wall; And a first inner wall having a first inner surface that is bent at and directed toward the second moving unit, wherein the second moving unit comprises: a second moving wall parallel to the second guide wall and the second moving wall; A second inner wall that is bent at a wall and has a second inner surface facing parallel to the first inner surface, wherein the operating unit is configured to reciprocate in a direction parallel to the load action line; Moving rod through inner wall And a first pressing flange forming the end of the moving rod to press the first inner surface, and a second pressing flange having a diameter extending from the moving rod to press the second inner surface. A first fixing pin fixed to the moving wall and fitted to the first guide hole so as to be movable in the first guide hole; And a second fixing pin having one side fixed to the second moving wall and the other side slideably inserted into the second guide hole.

Further, in the damper device according to the present invention, the first moving unit includes a first outer wall provided with a first outer surface forming an opposite surface to the first inner surface, and the second moving unit includes: A second outer wall having a second outer surface forming an opposite surface to a second inner surface, coupled to be orthogonal to the first guide wall, and interposing the first elastic body with the first outer wall; A first fixed wall; A second fixing wall coupled to orthogonal to the second guide wall and having the second elastic body interposed between the second outer wall; And a fixed rod extending in a direction parallel to the load action line in the first fixed wall, wherein the movable rod may pass through the second outer wall and the second fixed wall.

In addition, in the damper device according to the present invention, each of the first moving wall and the second moving wall is provided with two, three or four orthogonal or parallel to each other, the guide unit is the number of the first moving wall and It is provided with the same or a large number of orthogonal or parallel to each other, the deformation unit is provided with the same number as the number of the first moving wall may be made orthogonal or parallel to each other.

In addition, in the damper device according to the present invention, the first fixing pin is screwed to the first moving wall, a portion of the first guide wall between the head and the first moving wall, the diameter of the first fixing pin is expanded Is interposed, the second fixing pin is screwed to the second moving wall, a portion of the second guide wall is interposed between the head and the second moving wall, the diameter of the second fixing pin is expanded, A friction force acts between the first fixing pin and the first guide wall, and a friction force acts between the second fixing pin and the second guide wall.

The deformation unit may further include: a first deformation plate fixed to the first moving wall and interposed between the first guide wall and the first moving wall; A second deformation plate fixed to the second moving wall and interposed between the second guide wall and the second moving wall; And a third deformation plate connecting the first deformation plate and the second deformation plate, and at least a portion of which is narrower than a width of the first deformation plate and the second deformation plate.

According to the present invention, when the tensile force is applied to both ends of the damper device and the compressive force is applied to the deformation unit is tensioned, the deformation prediction of the deformation unit is easy to design the damper device for shock absorption, vibration and displacement control It is possible to provide a damper device having a stable structure, and to provide a damper device capable of maximizing a buffering effect, shock absorbing and restoring effect, including a superelastic shape memory alloy and a self-healing thermoplastic polyurethane.

1 is a view schematically showing a state in which a damper device is installed in a structure according to an embodiment of the present invention;
2 is a perspective view showing a damper device according to the present invention,
3 is a perspective view showing the guide unit separated from the damper device shown in FIG.
4 is an exploded perspective view of the damper device shown in FIG. 2;
5 is a perspective view and a front view showing a damper device according to another embodiment of the present invention,
6 and 7 are views showing an operating state of the damper device shown in FIG.
8 is a diagram showing a stress-strain diagram of a damper device according to the present invention.

This research was supported by the Basic Research Project (2017R1A2B2010120), funded by the Government of the Ministry of Science, ICT and Future Planning in 2017 (This research was supported by Basic Science Research Program through the National Research Foundation of Korea). (NRF) funded by the Ministry of Science, ICT & Future Planning. (2017R1A2B2010120))

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

1 is a view schematically showing a state in which a damper device 1 according to an embodiment of the present invention is installed in a structure, FIG. 2 is a perspective view showing a damper device 1 according to the present invention, and FIG. 2 is a perspective view showing the guide unit 10 separated from the damper device 1 shown in FIG. 2, FIG. 4 is an exploded perspective view of the damper device 1 shown in FIG. 2, and FIG. 5 is another embodiment of the present invention. 6 and 7 are views (perspective views and cross-sectional views) showing an operating state of the damper device 1 shown in FIG. 2, and FIG. 8 shows the present invention. Is a diagram showing a stress-strain diagram of the damper device 1 according to the present invention.

Smart material utilization damper device (hereinafter, 'damper device 1') capable of automatic restoration and self-healing according to the present invention, as shown in Figure 1, the frame 102 and the beam 101 is coupled It is installed on the structure so that the shock absorption, vibration and displacement control can be made, it is made to automatically restore in a circular shape after deformation occurs by the load (especially horizontal load) applied to the structure.

The damper device 1 according to the present invention, as shown in Figure 1 (a) and (b), can be used coupled to the structure in a variety of forms, the external force in its longitudinal direction in the coupling to the brace 103 Tensile force or compressive force) is deformed when applied, and is automatically restored after external forces are removed.

Since the damper device 1 is coupled to the brace 103, the longitudinal direction of the damper device 1 and the longitudinal direction of the brace 103 form a straight line on the same line, and along the line segment formed in this way when an external force is generated by an earthquake or the like. Tensile or compressive forces act and these tensile or compressive forces are applied to the damper device 1.

Therefore, in the present invention, the tensile force or the compressive force of the external force applied to the damper device 1 is described as acting along the longitudinal center of the damper device 1, and the direction in which the tensile force or the compressive force acts in the left and right directions Explain.

The damper device 1 according to the present invention is a guide unit 10, the first moving unit 20, the second moving unit 30, the deformation unit 40, the operation unit 50, the first elastic body 90 And a second elastic body 100. In addition, the damper device 1 includes a first fixing pin 60 and a second fixing pin 70, and includes a first fixing wall 110, a second fixing wall 120, and a fixing rod 130. It is made to include.

Since the damper device 1 is to be shock absorbing while resisting the earthquake load, the damper device 1 is made of a material having sufficient strength, and includes a guide unit 10, a first moving unit 20, and a second device constituting the damper device 1. The moving unit 30, the operation unit 50, the first fixing pin 60, the second fixing pin 70, the first fixing wall 110, the second fixing wall 120 and the fixing rod 130 are It is preferable to be made of a metallic high-strength material so that deformation is minimized when the action of the external force, at least they are preferably made of a material of higher strength than the deformation unit 40, the strain is lower than the deformation unit 40 .

That is, when the tension force or the compressive force in the left and right direction acts on the damper device 1 according to the present invention, the deformation unit 40 is deformed (in particular, the longitudinal deformation in the left and right direction), the guide except the deformation unit 40 Unit 10, the first moving unit 20, the second moving unit 30, the operation unit 50, the first fixing pin 60 and the second fixing pin 70, the first fixing wall 110 The second fixing wall 120 and the fixing rod 130 are not deformed (especially, longitudinal deformation in the left and right directions) or only deformed to the extent that the degree is negligible when compared with the deforming unit 40. .

Guide unit 10 is made to have a predetermined length along the virtual load action line (L) parallel to the direction in which the tensile or compressive force acts. The load action line L forms a straight line in the horizontal direction.

The guide unit 10 has a predetermined length along the load action line (L), the guide unit 10 supports the first moving unit 20 and the second moving unit 30, in particular the first moving unit ( 20 and the second moving unit 30 is made to support the reciprocating movement in the left and right directions, for this purpose, the left and right lengths of the guide unit 10 is the first moving unit 20 and the second moving unit 30 The length of the left and right direction of the guide unit 10 is about 3 to 10 times the length of the left and right directions of the first mobile unit 20 (or the second mobile unit 30). desirable.)

The guide unit 10 includes a first guide wall 11 and a second guide wall 12, and the guide unit 10 further includes a connection wall 13.

The first guide wall 11 is formed in a flat plate shape so that one side thereof faces the first moving unit 20, and the first guide wall 11 has a first guide hole parallel to the load action line L. 11a) is formed. One or more first guide holes 11a may be provided. In particular, the surface from the first guide wall 11 toward the first moving unit 20 forms a plane.

The second guide wall 12 is formed in a flat plate shape such that one side thereof faces the second moving unit 30, and the second guide wall 12 has a second guide hole parallel to the load action line L. 12a) is formed. One or more second guide holes 12a may be provided. In particular, the surface from the second guide wall 12 toward the second moving unit 30 forms a plane.

Preferably, the second guide wall 12 is coplanar with the first guide wall 11.

The connecting wall 13 is a portion connecting the first guide wall 11 and the second guide wall 12, and the first guide wall 11, the connecting wall 13, and the second guide wall 12 are mutually connected. It is preferable to be made in one piece. In the guide unit 10, the connecting wall 13 may be formed in a flat plate shape to form the same plane as the first guide wall 11 and the second guide wall 12, and thus the guide unit 10 may be generally flat. It forms a plate.

Alternatively, the connecting wall 13 may not be coplanar with the first guide unit 10 and the second guide unit 10. In this case, the connecting wall 13 may include the first guide wall 11 and Compared to the second guide wall 12, it may be formed in a form further spaced apart from the deformation unit 40.

The first moving unit 20 is coupled to one side of the guide unit 10, in particular coupled to one side of the guide unit 10 so as to reciprocate in a direction parallel to the load action line (L).

The first moving unit 20 may include a first moving wall 21 and a first inner wall 22. In addition, the first moving unit 20 includes a first outer wall 23.

The first moving wall 21 forms a shape parallel to the first guide wall 11 and forms a flat plate as a whole. In particular, the surface from the first moving wall 21 toward the first guide wall 11 forms a plane.

The first inner wall 22 is bent from the first moving wall 21 to form a flat plate, and the first inner wall 22 is orthogonal to the first moving wall 21. The first inner wall 22 is provided with a first inner surface 22a facing the second moving unit 30, and the first inner surface 22a is perpendicular to the load action line L. As shown in FIG.

The first inner wall 22 may be integrally formed with the first moving wall 21, and may be separately formed and fixedly coupled to the first moving wall 21.

The first outer wall 23 is bent from the first moving wall 21 to form a flat plate, and the first outer wall 23 is preferably orthogonal to the first moving wall 21. The first outer wall 23 is provided with a first outer surface 23a which forms the surface opposite to the first inner surface 22a, and the first outer surface 23a is perpendicular to the load action line L. If the first inner surface 22a is a surface facing the center of the damper device 1, the first outer surface 23a corresponds to a surface facing outward of the damper device 1.

The first outer wall 23 may be integrally formed with the first moving wall 21, or may be separately formed and fixedly coupled to the first moving wall 21.

The first fixing wall 110 is coupled to be orthogonal to the first guide wall 11, and the first elastic body 90 is interposed between the first fixing wall 110 and the first outer wall 23. The first fixing wall 110 may be fixedly coupled to the end of the first guide wall 11. The first fixing wall 110 may be integrally formed with the first guide wall 11, or may be separately formed and coupled to the first guide wall 11.

The fixed rod 130 is formed in the form of a long rod (rod) along the left and right direction, the cross section may be made of a circular, polygonal or the like. The fixed rod 130 is formed along the direction parallel to the load action line (L) is fixed to the first fixed wall 110 and is preferably coupled to the center of the first fixed wall 110, the moving rod 51 It is preferably formed on the same line as).

The second moving unit 30 is coupled to one side of the guide unit 10 in a state spaced apart from the first moving unit 20, and in particular, the guide unit 10 is capable of reciprocating in parallel with the load action line L. Is coupled to one side. If the first mobile unit 20 is coupled to the left side of the guide unit 10, the second mobile unit 30 is coupled to the right side of the guide unit 10.

The second moving unit 30 may include a second moving wall 31 and a second inner wall 32. In addition, the second moving unit 30 includes a second outer wall 33.

The second moving wall 31 forms a shape parallel to the second guide wall 12 and forms an overall flat plate shape. In particular, the surface from the second moving wall 31 toward the second guide wall 12 forms a plane.

The second inner wall 32 is bent from the second moving wall 31 to form a flat plate, and the second inner wall 32 is preferably orthogonal to the second moving wall 31. The second inner wall 32 is provided with a second inner surface 32a facing the first moving unit 20, and the second inner surface 32a is perpendicular to the load action line L.

The second inner wall 32 may be integrally formed with the second moving wall 31, and may be separately formed and fixedly coupled to the second moving wall 31.

The second outer wall 33 is bent from the second movable wall 31 to form a flat plate, and the second outer wall 33 is preferably orthogonal to the second movable wall 31. The second outer wall 33 is provided with a second outer surface 33a which forms the opposite surface of the second inner surface 32a, and the second outer surface 33a is orthogonal to the load action line L. As shown in FIG. If the second inner surface 32a is a surface facing toward the center of the damper device 1, the second outer surface 33a corresponds to a surface facing outward of the damper device 1.

The second outer wall 33 may be integrally formed with the second moving wall 31, and may be separately formed and fixedly coupled to the second moving wall 31.

The second fixing wall 120 is coupled to be orthogonal to the second guide wall 12, and the second elastic body 100 is interposed between the second fixing wall 120 and the second outer wall 33. The second fixing wall 120 may be coupled to an end of the second guide wall 12. The second fixing wall 120 may be integrally formed with the second guide wall 12 or may be separately formed and fixedly coupled to the second guide wall 12.

The deforming unit 40 connects the first moving unit 20 and the second moving unit 30 and is tensioned and restored along a direction parallel to the load action line L.

More specifically, when the first mobile unit 20 and the second mobile unit 30 are far from each other, the deformation unit 40 is tensioned, the operation unit 50 pulls the second mobile unit 30 or When pushing the first mobile unit 20, the deformation unit 40 is tensioned.

The deformation unit 40 may be made of a material that is tensioned when an external force (tensile or compressive force) is applied along the left and right directions on the damper device 1 and is restored to its original state after such external force is removed, in particular, In the damper device 1 according to the present invention, the deformation unit 40 is preferably made of a shape memory alloy.

First, the shape memory alloy is deformed by the load of the shape memory alloy in the martensite state, and the residual strain remains when the load is removed. When the residual deformation exceeds a certain temperature by heating, forward transformation occurs and the original shape is restored. That is, the shape memory effect (Shape Memory Effect) is shown that the residual strain disappears. In addition, the shape memory alloy of austenite in the high temperature state is changed to the martensite state by the load, and when the load is removed, reverse transformation occurs. In this process, the superelastic behavior of the deformation caused by the load is recentered. This provides a restoring force by effectively generating two specific behaviors from the heat generated in the connecting member due to the kinetic energy when the brace system performs the behavior from the external load. The shape memory alloy to be used in the present invention is in the form of Ni-Ti (Nitinol: Nitinol), and the alloy of the Nitinol form is expensive, so iron or copper alloys are used to lower the price. Nitinol alloy is the most commonly used shape memory alloy and is the most suitable shape memory alloy with excellent elastic modulus, large deformation recovery and corrosion resistance.

Thus, the deformation unit 40 may be made of a superelasticity shape memory alloy (superelasticity shape alloy), the superelastic shape memory alloy is inherently at room temperature even if heat is not applied after plastic deformation is applied. It is a metal having a property of restoring to the shape of, so that the deformation unit 40 is returned to its original state by itself even if heat is not applied after tensile deformation by an external force.

The first elastic body 90 is made of a polyurethane elastic body, and is made to compressively deform when the operating unit pushes the first mobile unit. The first elastic body 90 is interposed in close contact between the first outer wall 23 and the first fixing wall 110, and may be provided in plurality.

The second elastic body 100 is made of a polyurethane elastic body, it is made to compressively deform when the operating unit pulls the second mobile unit. The second elastic body 100 is interposed in close contact between the second outer wall 33 and the second fixing wall 120, and may be provided in plurality.

As such, the first elastic body 90 and the second elastic body 100 may be made of a polyurethane elastic body, and in particular, may be made of a polymer material (self-healing thermoplastic polyurethane) having self-healing properties.

Self-healing thermoplastic polyurethane is a material that simultaneously expresses the excellent processability of the thermoplastic resin and the flexibility and elasticity of the vulcanized rubber. The self-healing thermoplastic polyurethane has characteristics such as excellent processability, recyclability, rubber elasticity, bending fatigue resistance, chemical resistance, and heat resistance. The hydrogen bond former containing an amine group is melt-mixed to the polyolefin rubber which is 0.5 to 2.0 weight% grafted with maleic anhydride, and has 5 to 10% crystallinity. Such melt mixing is performed at a temperature of 160 to 200 ° C. depending on the type of hydrogen bond former. In this process, the amine group in the hydrogen bond former reacts with maleic anhydride grafted onto the polyolefin rubber, resulting in shape memory characteristics and a wide range of hydrogen bonds between polymers. Combining the shape memory properties imparted in this way with a wide range of hydrogen bonds has a strong binding force between the intermolecular chains, thereby making the polyolefin-based thermoplastic elastomer have self-healing properties.

As described above, the first elastic body 90 and the second elastic body 100 according to the present invention may be made of a polymer material having self-healing properties, and the self-healing property may autonomously heal damaged materials without external interference. The polymer material having such characteristics is also introduced in Korea Patent Registration No. 1682047, US Patent Publication No. 2015-0045496, and the like.

The deformation unit 40 may include a first deformation plate 41, a second deformation plate 42, and a third deformation plate 43.

The first deforming plate 41 is tightly fixed to the first moving wall 21 and interposed between the first guide wall 11 and the first moving wall 21. The first deformable plate 41 is formed in the form of a flat plate as a whole and forms a plane parallel to the first guide wall 11 and the first moving wall 21.

The second deforming plate 42 is fixed to the second moving wall 31 and is interposed between the second guide wall 12 and the second moving wall 31. The second deformable plate 42 has a flat plate shape as a whole and forms a plane parallel to the second guide wall 12 and the second moving wall 31.

The third deformation plate 43 is formed in a flat plate shape so as to integrally connect the first deformation plate 41 and the second deformation plate 42 and form the same plane as the first deformation plate 41 and the second deformation plate 42. desirable. And the width of the third deformation plate 43 (the width in the direction orthogonal to the load action line L of the surface formed by the deformation unit 40) is narrower than the width of the first deformation plate 41 and the second deformation plate Preferably, the third deformation plate 43 is connected to the first deformation plate 41 and the second deformation plate 42 while the third deformation plate 43 has a constant width along the load action line L and the width thereof is expanded at an end thereof.

Therefore, when the tensile force is applied to the deformation unit 40, deformation is concentrated in the third deformation plate 43 portion.

The first fixing pin 60 fixes the first deformation plate 41 of the deformation unit 40 to the first movement wall 21 of the first movement unit 20, and guides the first movement unit 20. The unit 10 is reciprocally coupled.

The first fixing pin 60 may be formed in the form of a bolt or rivet, and in particular, may be screwed to the first moving wall 21 in the form of a bolt.

The first fixing pin 60 is fitted to be slidably movable along the left and right directions in the first guide hole 11a, and the diameter of the first fixing pin 60 is equal to the width of the first guide hole 11a. It is preferable.

The head 61 having an enlarged diameter of the first fixing pin 60 is exposed from the outside of the first guide wall 11, and the first fixing pin 60 is coupled to the first moving wall 21 so that the first 61 is fixed. The first deformation plate 41 and the first guide wall 11 are stacked and coupled to the outer surface of the movable wall 21.

In the damper device 1 according to the present invention, a friction force acts between the first fixing pin 60 and the first guide wall 11, in particular, the head 61 and the first of the first fixing pin 60. As the outer surface of the guide wall 11 is in close contact, strong friction is made, and the first fixing pin 60 and the first guide wall (adjust the degree to which the first fixing pin 60 is screwed to the first moving plate). 11) The friction force acting on the liver can be adjusted. That is, the friction force may be adjusted by adjusting the degree of close contact between the head 61 of the first fixing pin 60 and the outer surface of the first guide wall 11. Accordingly, the damper device 1 according to the present invention can function as a friction damper.

The second fixing pin 70 fixes the second deformation plate 42 of the deformation unit 40 to the second movement wall 31 of the second movement unit 30, and guides the second movement unit 30. The unit 10 is reciprocally coupled.

The second fixing pin 70 may be formed in the form of a bolt or rivet, and in particular, may be screwed to the second moving wall 31 in the form of a bolt.

The second fixing pin 70 is slidably inserted into the second guide hole 12a along the left and right directions, and the diameter of the second fixing pin 70 is equal to the width of the second guide hole 12a. It is preferable.

The head 71 in which the diameter of the second fixing pin 70 is expanded is exposed from the outside of the second guide wall 12, and the second fixing pin 70 is coupled to the second moving wall 31 so that the second The second deformable plate 42 and the second guide wall 12 are stacked and coupled to the outer surface of the movable wall 31.

In the damper device 1 according to the present invention, the friction force acts between the second fixing pin 70 and the second guide wall 12, and in particular, the head 71 and the second of the second fixing pin 70. As the outer surface of the guide wall 12 is in close contact, strong friction is achieved, and the second fixing pin 70 and the second guide wall (by adjusting the degree of screwing the second fixing pin 70 to the second moving plate) 12) The friction force acting on the liver can be adjusted. That is, the friction force may be adjusted by adjusting the degree of close contact between the head 71 of the second fixing pin 70 and the outer surface of the second guide wall 12. Accordingly, the damper device 1 according to the present invention can function as a friction damper.

In the present invention, the friction force (static friction force and movement friction force) acting between the second fixing pin 70 and the second guide wall 12 and the friction force acting between the first fixing pin 60 and the first guide wall 11. (Static friction and motion friction) can be adjusted to be made the same, as well as can be made to be different from each other, it can be adjusted according to the characteristics of the structure in which the damper device 1 according to the present invention is installed.

When the deformation (tensile) of the deformation unit 40 is not made at all, the first fixing pin 60 is located on the side closest to the second guide hole 12a in the first guide hole 11a, and also the second fixing The pin 70 is located on the side closest to the first guide hole 11a from the second guide hole 12a.

The operation unit 50 pulls the second mobile unit 30 so that the second mobile unit 30 is separated from the first mobile unit 20, and also the first mobile unit 20 from the second mobile unit 30. The first moving unit 20 is pushed so as to move away.

To this end, the operation unit 50 may include a moving rod 51, a first pressure flange 52, and a second pressure flange 53.

The moving rod 51 is formed in the form of a long rod (rod) along the left and right direction, and its cross section may be formed in a circle or a polygon. The moving rod 51 penetrates through the second inner wall 32 and is coupled to the second moving unit 30 in a reciprocating manner from side to side.

In addition, the moving rod 51 reciprocates from side to side while penetrating through the second outer wall 33 and the second fixing wall 120.

The first pressing flange 52 has a shape in which the diameter is expanded at the end of the moving rod 51 and is in close contact with the first inner surface 22a or spaced apart from the first inner surface 22a.

The second press flange 53 is formed in the shape of the diameter is expanded in the central portion of the moving rod 51 and is in close contact with the second inner surface (32a) or spaced apart from the second inner surface (32a).

When the deformation unit 40 is not deformed (tensioned) at all, the first pressurizing flange 52 is in close contact with the first inner surface 22a, and the second pressurizing flange 53 is at the second inner surface 32a. Close to)

In the damper device 1 according to the present invention, each of the first moving wall 21 and the second moving wall 31 may be provided. That is, the first moving unit 20 is composed of one first moving wall 21, the first inner wall 22, and the first outer wall 23, so that the entire cross section may have a C shape. However, in the damper device 1 according to the present invention, it is preferable that the first moving wall 21 and the second moving wall 31 are provided with two or four, respectively.

When two first moving walls 21 and two second moving walls 31 are provided, each of the pair of first moving walls 21 and the second moving walls 31 may be perpendicular to or parallel to each other. In particular, it is preferable that each of the pair of first moving walls 21 and the second moving walls 31 are formed in parallel with each other (see FIG. 5), and accordingly, the first moving unit 20 and the second moving unit Each of the units 30 has a cross-sectional shape (see Fig. 5).

At this time, in the damper device 1, two guide units 10 and two deformation units 40 are provided, respectively, coupled to the first moving wall 21 and the second moving wall 31 to form a symmetrical shape. (See Fig. 5).

When four first moving walls 21 and two second moving walls 31 are provided, each of the first moving walls 21 and the second moving walls 31 may be perpendicular to or parallel to each other. Accordingly, each of the first mobile unit 20 and the second mobile unit 30 has a hexahedral shape. In this case, the damper device 1 is provided with four guide units 10 and four deformation units 40, each coupled to the first moving plate and the second moving plate, and symmetrical in the vertical direction. (See FIGS. 2-4)

In addition, the guide unit 10 forms a square pipe shape and supports them during the movement of the first and second mobile units 20 and 30 and the deformation of the deformation unit 40, and stable deformation and operation are performed. To be done.

6 and 7, the operation of the damper device 1 according to the present invention will be described.

When the damper device according to the present invention does not have the above-described fixing rod 130, the damper device 1 is coupled to the frame structure at both ends, one end of the guide unit 10 and the operation unit 50 One end may be coupled to the frame structure. Specifically, the outer end (distant from the second guide wall 12) of the first guide wall 11 is coupled to the brace 103 of the frame structure, and the outer end of the operating unit 50 (first press flange) 52) may be coupled to other brace 103 of the frame structure.

When the damper device according to the present invention includes a fixed rod 130, the damper device 1 is also coupled to both ends of the frame structure, one end of the fixed rod 130 and one end of the operation unit 50 Can be coupled to the frame structure. Specifically, the outer end of the fixed rod 130 (distant from the moving rod 51, hereinafter 'first point A') is coupled to the brace 103 of the frame structure, the outer side of the operating unit 50 An end (distant from the first pressing flange 52, hereinafter 'second point B') is coupled to the other brace 103 of the frame structure.

Hereinafter, a description will be given based on the case where the fixed rod 130 is provided.

When the tension force F11 acts on the damper device 1, the external force F11 acts in a direction away from each other between the first point A and the second point B. FIG.

At this time, the second pressurizing flange 53 of the operation unit 50 presses the second inner surface 32a and moves the second moving unit 30 away from the first moving unit 20. Pull). As the deformation unit 40 is tensioned, the second moving unit 30 slides in a direction away from the first moving unit 20, and the second fixing pin 70 moves along the second guide hole 12a. do. In addition, the first pressing flange 52 is spaced apart from the first inner surface (22a) (see Fig. 6 (a)).

In addition, frictional force is generated between the second fixing pin 70 and the second guide wall 12.

In addition, while the second moving unit 30 moves, the second elastic body 100 is pressed between the second outer wall 33 and the second fixing wall 120 to deform and compressively form a self-healing restoring force.

When the tensile force F11 acts on the damper device 1 as described above, the deformation unit 40 made of the shape memory alloy dissipates energy, and the energy is dissipated by the second fixing pin 70, and self-healing thermoplastic The second elastic body 100 made of polyurethane further dissipates energy.

One action (FIG. 8 (d)) of the damper device 1 of the present invention at the action of the tensile force F11 as the external force is the work due to the deformation-restoration stress and the relative travel distance of the deformation unit 40 (FIG. 8 (a). )), Work by friction force and relative movement distance between the second fixing pin 70 and the second guide wall 12 (FIG. 8 (b)) and work by the restoring force and relative movement distance of the second elastic body 100. It can be quantified by the sum of (Fig. 8 (c)), which can be shown by the load-displacement hysteresis curve (see Fig. 8).

On the other hand, when the compressive force F22 acts on the damper device 1, the external force F22 acts in a direction closer to each other between the first point A and the second point B. FIG.

At this time, the first pressing flange 52 of the operation unit 50 presses the first inner surface 22a and moves the first moving unit 20 away from the second moving unit 30. ). And as the deformation unit 40 is tensioned, the first moving unit 20 slides in a direction away from the second moving unit 30 and the first fixing pin 60 moves along the first guide hole 11a. do. In addition, the second pressing flange 53 is spaced apart from the second inner surface 32a.

In addition, frictional force is generated between the first fixing pin 60 and the first guide wall 11.

In addition, as the first moving unit 20 moves, the first elastic body 90 is compression-deformed between the first outer wall 23 and the first fixing wall 110 to form a self-healing restoring force.

When the tensile force F22 acts on the damper device 1 as described above, the deformation unit 40 made of the shape memory alloy dissipates the energy, and the energy is dissipated by the first fixing pin 60, and the self-healing thermoplastic The first elastic body 90 made of polyurethane further dissipates energy.

One action (FIG. 8 (d)) of the damper device 1 of the present invention at the action of the compressive force F22 as the external force is the work due to the deformation-restoration stress and the relative travel distance of the deformation unit 40 (FIG. 8 (a). )), The work by the frictional force and the relative movement distance between the first fixing pin 60 and the first guide wall 11 (FIG. 8 (b)) and the work by the restoring force and the relative movement distance of the first elastic body 90. It can be quantified by the sum of (Fig. 8 (c)), which can be shown by the load-displacement hysteresis curve (see Fig. 8).

As described above, according to the damper device 1 according to the present invention, the deformation unit 40 is tensioned when a tension force is applied to both ends of the damper device 1 and a compression force is applied, thereby deforming the deformation unit 40. It is easy to predict the design of the damper device 1 for shock absorption, vibration and displacement control, and also the first fixing pin 60, the first guide wall 11 and the second fixing pin 70 and 2 It is made to facilitate the adjustment of the friction force acting between the guide wall 12, it is also easy to design the damper device (1) for shock absorption, vibration and displacement control, to provide a damper device (1) of a stable structure Can be.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is self-evident to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

1: Damper device
10: guide unit 11: the first guide wall
12: second guide wall 13: connecting wall
20: first moving unit 21: first moving wall
22: first inner wall 23: first outer wall
30: second moving unit 31: second moving wall
32: second inner wall 33: second outer wall
40: deformation unit 41: first deformation plate
42: second modified plate 43: third modified plate
50: operating unit 51: moving rod
52: first pressure flange 53: second pressure flange
60: first fixing pin 70: second fixing pin
90: first elastic body 100: second elastic body
110: first fixing wall 120: second fixing wall
130: fixed rod

Claims (6)

A guide unit having a predetermined length along an imaginary load acting line parallel to the direction in which the tensile or compressive force acts;
A first moving unit coupled to one side of the guide unit and reciprocating in parallel with the load action line;
A second moving unit spaced apart from the first moving unit and coupled to one side of the guide unit and reciprocating in parallel with the load action line;
A deformation unit made of a shape memory alloy to connect the first moving unit and the second moving unit and to be tensioned and recovered along a direction parallel to the load action line;
An operation unit configured to pull the second mobile unit to move the second mobile unit away from the first mobile unit, and to push the first mobile unit to move the first mobile unit away from the second mobile unit;
A first elastic body made of a polyurethane elastic body and compressively deformed when the operating unit pushes the first moving unit; And
A second elastic body made of a polyurethane elastic body and compressively deformed when the operating unit pulls the second moving unit,
And the deformation unit is tensioned when the first and second moving units move away from each other. The method of claim 1,
The guide unit may include a first guide wall having one side facing the first moving unit and having a first guide hole parallel to the load acting line, and one side facing the second moving unit and parallel to the load acting line. A second guide wall having a second guide hole formed therein;
The first moving unit includes a first moving wall parallel to the first guide wall, and a first inner wall having a first inner surface bent from the first moving wall and facing toward the second moving unit. ,
The second moving unit includes a second inner wall having a second moving wall parallel to the second guide wall and a second inner surface bent from the second moving wall and facing in parallel to the first inner surface. Including,
The actuating unit includes a moving rod passing through the second inner wall to reciprocate in a direction parallel to the load action line, and a first pressing flange forming the end of the moving rod to press the first inner surface; A second pressing flange having a diameter extending from the moving rod to press the second inner surface,
A first fixing pin having one side fixed to the first moving wall and the other side slideably inserted into the first guide hole; And
A damper device, characterized in that the one side is fixed to the second moving wall and the other side is fixed to the second guide hole to be slidably fitted. The method of claim 2,
The first moving unit includes a first outer wall provided with a first outer surface forming a surface opposite to the first inner surface,
The second moving unit includes a second outer wall provided with a second outer surface forming a surface opposite to the second inner surface,
A first fixing wall coupled to orthogonal to the first guide wall and having the first elastic body interposed between the first guide wall and the first outer wall;
A second fixing wall coupled to orthogonal to the second guide wall and having the second elastic body interposed between the second outer wall; And
And a fixing rod extending in a direction parallel to the load action line in the first fixing wall.
And the moving rod penetrates through the second outer wall and the second fixing wall. The method of claim 2,
Each of the first moving wall and the second moving wall is provided with two or four, orthogonal or parallel to each other,
The guide unit is provided with the same or greater number than the number of the first movable wall to be perpendicular or parallel to each other,
The deformation unit is provided with the same number as the number of the first moving wall damper device, characterized in that orthogonal or parallel to each other. The method according to any one of claims 2 to 4,
The first fixing pin is screwed to the first moving wall,
A part of the first guide wall is interposed between the head of which the diameter of the first fixing pin is extended and the first moving wall.
The second fixing pin is screwed to the second moving wall,
A part of the second guide wall is interposed between the head and the second moving wall of which the diameter of the second fixing pin is extended,
And a frictional force acts between the first fixing pin and the first guide wall, and a frictional force acts between the second fixing pin and the second guide wall. The method of claim 5,
The deformation unit,
A first deformation plate fixedly adhered to the first moving wall and interposed between the first guide wall and the first moving wall;
A second deformation plate fixed to the second moving wall and interposed between the second guide wall and the second moving wall; And
And a third deformable plate connecting the first deformed plate and the second deformed plate, at least a part of which is narrower than a width of the first deformed plate and the second deformed plate.

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