JP4959635B2 - Damping member - Google Patents

Description

  The present invention relates to a vibration damping member, and more particularly, to a vibration damping member suitably used for a wooden structure.

  A vibration control structure is known as one of the vibration countermeasure structures applied to buildings / buildings (hereinafter simply referred to as “buildings”). Damping structure is to reduce the response when the building is subjected to vibration by suppressing the vibration of the damping member installed at the specific part of the structural frame, and ensure the safety of the building etc. Shows the structure. In this case, the term “damping structure” refers to a structure that controls not only earthquakes but also a wide range of vibrations caused by wind and traffic.

  There are various types of damping members used in the damping structure, and one of them is known in which a damper using a leaf spring is arranged (for example, Patent Document 1 and Patent Document 2). Patent Document 1 discloses a laminated leaf spring, a fixed seat for fixing the laminated leaf spring, a support shaft for engaging the fixed seat, a support seat for erecting the support shaft, a seat mounted on the support shaft, and a seat base A damping member having a cover for covering the base, a base for fixing the cover on the foundation, and the like are disclosed.

  Patent Document 2 discloses a damping member that uses a laminated leaf spring in which a plurality of leaf springs having different lengths are stacked. Specifically, there is disclosed a vibration damping member in which the above-described laminated leaf spring is connected between upper and lower beams via a brace material and a plurality of plates such as a link plate and a gusset plate.

Japanese Patent Laid-Open No. 9-195574 JP-A-10-82203

  However, since the vibration damping member disclosed in Patent Document 1 is composed of many parts such as a laminated leaf spring, a fixed seat, a support shaft, and a support seat, the size of the entire member tends to increase. It was. By the way, in the wooden building etc. where the strength of the member is weak, there is a current situation that the interval between the pillars is shortened as compared with the reinforcing steel, reinforced concrete construction, steel construction, etc. Therefore, there has been a problem that a large vibration damping member as disclosed in Patent Document 1 is difficult to install due to restrictions imposed by the opening positions of windows and doors of existing buildings.

  On the other hand, the damping member disclosed in Patent Document 2 has fewer components than the damping member of Patent Document 1, but in addition to the laminated leaf spring, a link plate, a gusset plate, a brace material, and a bracket Thus, the configuration still requires many parts, and further simplification and miniaturization have been desired. Moreover, the damping member disclosed in Patent Document 2 has a configuration in which a brace material is installed between upper and lower beams, and a laminated leaf spring (damper member) is attached via the brace material and a link plate or the like. . Therefore, it took time and effort to retrofit the existing building by retrofitting. This is because it is necessary to remove the existing brace material if necessary, and to modify or replace it with a shape suitable for installation. Further, the vibration damping member disclosed in Patent Document 2 has a configuration in which a brace material is installed between the upper and lower beams, and can absorb the lateral vibration (rolling) applied to the building. However, there was also a problem that vertical shaking was not absorbed.

  Therefore, in view of the above situation, the present invention is small and suitably used for a wooden building, and can be easily and flexibly installed in an existing wooden building. Both pitch and roll are provided. It is an object of the present invention to provide a damping member that can cope with the above.

The vibration damping member according to the present invention is attached to a joint portion between a wooden horizontal structure case erected in a substantially horizontal direction and a wooden vertical structure case supported in a substantially vertical direction with respect to the horizontal structure case. A damping member provided,
It is a long leaf spring, and both end sides are in contact with either the horizontal structure case or the vertical structure case, and the middle part forms a first gap with respect to the structure case. The first leaf spring, which is curved as
One or a plurality of long leaf springs, both ends of which are slidably in contact with the first leaf spring, and a second gap is formed in the middle portion with respect to the first leaf spring. A second leaf spring, which is curved to be
And a connecting member that bundles the first plate spring and the second plate spring in the vicinity of the center,
A laminated leaf spring member having
And a connecting member that connects the second leaf spring to the other structural housing. "

  Here, the “horizontal structural frame” refers to a wooden structural frame that is installed in a substantially horizontal direction, and includes, for example, a beam, a trunk difference, and a foundation in a wooden house. In addition, the “vertical structure housing” is a wooden structure housing that is supported in a substantially vertical direction with respect to the horizontal structure housing and supports the load on the roof and the floor, and can be exemplified by column members such as pipe columns and through columns. The “damping member” in the present invention is particularly preferably used for wooden buildings, but the material is not particularly limited, such as wood, metal, synthetic resin, and the like. Further, the second leaf spring may be constituted by a single leaf spring, or may be constituted by a plurality of leaf springs arranged in a curved manner so that a gap is formed in the middle portion. . When the second leaf spring is composed of a plurality of leaf springs, leaf springs having the same shape may be laminated, and a plurality of leaf springs that are gradually shortened are laminated in order. Also good.

  The vibration damping member of the present invention is mainly configured to have a laminated leaf spring member and a connecting member, and can be arbitrarily installed at a joint portion of a new or existing structural housing. For example, when the first leaf spring of the overlapping leaf spring member is brought into contact with the vertical structural housing, the vibration damping member is connected to the joint portion by connecting the horizontal structural housing such as the base and the second leaf spring by the coupling member. Install. Conversely, when the first plate spring is brought into contact with the horizontal structure housing, the vertical structure housing and the second plate spring are connected by a connecting member and installed.

  According to the vibration damping member of the present invention, when vibration is applied to the structural housing due to an earthquake, wind, vehicle traffic, etc., the vibration is transmitted to the overlap leaf spring member. As a result, a force that promotes deformation is applied to the first plate spring and the second plate spring, and the first plate spring and the second plate spring are attenuated by the stretching force and friction caused by the deformation. This point will be described more specifically. Both ends of the first leaf spring of the stacked leaf spring member are in contact with the structural housing (horizontal structural housing or vertical structural housing). Further, both end sides of the second leaf spring are slidably in contact with the first leaf spring. Therefore, since one end side of the first leaf spring is slidable, a predetermined frictional force is generated between the first leaf spring and the structural housing. Further, a predetermined frictional force is generated between both end sides of the second leaf spring and the first leaf spring.

  Here, when vibration is applied to the overlap leaf spring member and the applied force is larger than the friction force of the overlap leaf spring member, each end portion (one end portion of the first leaf spring and the second plate is slidable). Each end of the spring) starts to slide, and each leaf spring (first leaf spring and second leaf spring) expands and contracts. Then, the vibration applied to the laminated leaf spring is slid at the end of each leaf spring, so that the friction of the sliding portion is converted into thermal energy, the vibration is attenuated, and the vibration given to the structural frame is reduced. can do. As a result, it is possible to make it difficult for a person or equipment in the building to transmit the vibration, and to improve the comfortability.

  In particular, since the vibration damping member of the present invention is simply configured with a laminated leaf spring member and a connecting member, it is easy to downsize and is preferably installed in a wooden building having a relatively small interval between columns. it can. Moreover, since it can be directly installed at the joint, it can be easily installed in an existing building or the like in which braces and braces are already arranged. Furthermore, since the laminated leaf spring member can be arbitrarily installed on both the horizontal structure case and the vertical structure case, it is possible to cope with both the horizontal and vertical vibrations applied to the building.

  In addition, according to the vibration damping member of the present invention, a simple structure of a laminated leaf spring member in which long leaf springs are overlapped is applied to the damping mechanism, so that the vibration damping member can withstand a large impact. A member can be provided. On the other hand, the vibration damping member of the present invention also has an excellent feature that it can effectively exhibit a vibration damping effect even for relatively small vibrations. This is because, in the conventional overlap leaf spring mechanism, a plurality of leaf springs are in full contact with each other, but in the present invention, there is a second gap between the first leaf spring and the second leaf spring. It is because it is provided. That is, since the contact area of the second leaf spring with respect to the first leaf spring is limited only to the both end sides, the frictional force generated between the leaf springs is reduced compared to the case where they are brought into full contact with each other. it can. As a result, even if the vibration is relatively small, the second leaf spring begins to expand and contract and slides to cause vibration attenuation. Therefore, a highly sensitive damping member that exhibits a damping effect even during slight vibration can be obtained. Can be provided.

Further, in the present invention, “one end side of the end portion side of the first leaf spring is fixed with respect to the structural housing that is in contact, and the other end side is fixed to the one structural housing. It is characterized in that it is slidably in contact with the device.

  Both end sides of the first leaf spring are in contact with a horizontal structural housing or a vertical structural housing (hereinafter simply referred to as “structural housing”) and both end sides are slidable. Once the vibration occurs, that is, after the vibration is applied to the structural housing and the first leaf spring is damped, the contact position of the first leaf spring with respect to the structural housing may be different from the initial installation position. . Then, when the next vibration occurs, it may not be possible to demonstrate the damping effect at the beginning of the design.Therefore, an appropriate guide member for returning to the initial installation position after expansion or contraction is further added, or both end sides of the first leaf spring are connected. It is necessary to position it by fixing it to the structural housing. However, if both ends of the first leaf spring are fixed to the structural housing, the overlap leaf spring member can be positioned, but the first leaf spring itself cannot be expanded and contracted, so that the damping force due to sliding is not exhibited. .

  Therefore, according to the vibration damping member of the present invention, one end side of the end portion of the first plate spring is fixed and the other end side is slidably contacted. As a result, the first leaf spring can be positioned with respect to the structural housing, and the desired damping effect can be repeatedly exerted, and the other end side can be slid to generate frictional force with the structural housing. It has been successfully generated to increase the damping force. Therefore, it is possible to provide a high-performance damping member that can maintain a high damping effect even after repeated use.

In the present invention, "the connecting member is
A first bracket fixed to the other structural housing;
A second bracket fixed to the second leaf spring;
The diagonal bracket is arranged obliquely by connecting the first bracket and the second bracket,
The diagonal member may be rotatably connected to at least one of the first bracket and the second bracket.

  According to the vibration damping member of the present invention, the connecting member connects the first bracket fixed to one structural housing, the second bracket fixed to the second leaf spring, and the first bracket and the second bracket. It has diagonal materials. The diagonal member is rotatably connected to at least one of the first bracket or the second bracket.

  By the way, if the first bracket and the second bracket and the diagonal member are fixed to each other in a rigid (non-rotatable) manner, the connecting angle between these brackets and the diagonal member cannot be changed and can be changed at any installation location. It must be placed at a certain angle. Then, for example, when the installation location is narrow or other existing members and the vibration damping member interfere with each other, it may be difficult to insert or install the vibration damping member while maintaining the predetermined connection angle. Conceivable. On the other hand, according to the vibration damping member of the present invention, the connection angle between the first bracket or the second bracket and the diagonal member can be arbitrarily changed according to the conditions of the installation location. It can be flexibly adapted to installation in narrower places such as places where there are members. In other words, depending on the conditions of the installation location, the first bracket or the second bracket and the diagonal member can be arbitrarily deformed to insert the vibration damping member, or the first bracket or the bracket can be placed at a position that does not interfere with other existing members. Since the installation place of a 2nd bracket can be changed, the damping member suitable for an installation condition can be provided.

  In addition, according to the vibration damping member of the present invention, it is possible to provide a vibration damping member with improved durability against large vibrations. Under normal conditions, the angle between the vertical structure and the horizontal structure is maintained at a substantially right angle, but once a large vibration is applied to a building or the like due to an earthquake, these structures are The relative angle between them may change, and it may not be possible to maintain a substantially right angle state. Then, since the relative position of the first bracket and the second bracket changes, the connection angle between these brackets and the diagonal member also changes, but here, the diagonal member is relative to the first bracket and the second bracket. If it is fixed to the rigid (non-rotatable), the connection portion and the diagonal member itself may be damaged or deformed without being able to cope with the change in the connection angle. In contrast, according to the vibration damping member of the present invention, the diagonal member is rotatably connected to at least one of the first bracket and the second bracket. Even if the relative position is changed, it can be handled without being damaged or deformed. Therefore, it is possible to provide a vibration damping member that exhibits high durability even with a large vibration in which the angle formed by the vertical structure case and the horizontal structure case changes.

  Furthermore, it is more likely that the diagonal member is pivotally connected to the first bracket or the second bracket than the case where the diagonal member is fixed to the first bracket and the second bracket. When a force due to vibration is applied, the amount of bending of each leaf spring is likely to increase. More specifically, when one end of the first leaf spring is fixed to the structural housing and the other end is slidable with respect to the structural housing, the first leaf spring tends to be greatly deformed by vibration. The position of the connecting member connected to the first leaf spring is not only in the stacking direction of the stacked leaf spring members but also in the longitudinal direction (extending direction) of one structure housing (the structure housing to which the stacked leaf spring members are attached). Will also be displaced. However, in the case where the connecting member is assembled in a fixed state between the second leaf spring and the other structural housing, it becomes difficult to displace the connecting member in the longitudinal direction of the one structural housing. It acts to suppress the displacement of.

  On the other hand, in the present invention, since the diagonal member is rotatably connected to the first bracket or the second bracket, the position of the connecting member is easily displaced in accordance with the deformation of the first leaf spring. As a result, the amount of bending of each leaf spring can be made relatively large. As a result, the amount of movement of each leaf spring increases and the frictional force is amplified.

  As described above, according to the vibration damping member of the present invention, it is possible to improve the comfortability by making it difficult for the person and the equipment in the building to transmit the vibration. In particular, since the vibration damping member of the present invention has a simple configuration, it can be easily downsized and is preferably installed in a wooden building having a relatively small interval between columns. In addition, since it can be installed directly at the joint, it can be easily installed in existing buildings and the like, and is suitable for renovation work such as seismic reinforcement. Furthermore, since the vibration damping member of the present invention can be arbitrarily installed on either the horizontal structure frame or the vertical structure frame, it can cope with both the horizontal and vertical vibrations applied to the building. It is. Further, since the second leaf spring is curved and the second gap is provided, the sensitivity is higher than that in the case where the second leaf spring is entirely brought into contact with the first leaf spring. In addition, since a laminated leaf spring member having a simple structure in which long leaf springs are overlapped is applied to the damping mechanism, it contributes to providing a robust damping member that can withstand a large impact.

  Hereinafter, a vibration damping member according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a front view showing the use state of the damping member, FIG. 2 is a right side view showing the use state of the damping member, and FIGS. 3 to 5 are explanatory views for explaining the function of the damping member.

  The vibration damping member 1 of this example is a vibration damping member 1 that is preferably used for a wooden building. As mainly shown in FIGS. 1 and 2, a beam 2 laid in a substantially horizontal direction, and a beam 2. Are installed at the joints with the columns 3 supported in a substantially vertical direction. “Damping member” refers to a member installed at a specific part in order to attenuate vibration by converting vibration energy applied to the structural housing into heat energy. The beam 2 corresponds to the “horizontal structure case” of the present invention, and the column 3 corresponds to the “vertical structure case”.

  Hereinafter, it demonstrates in detail based on FIG.1 and FIG.2. The damping member 1 mainly has a laminated leaf spring member 4 and a connecting member 5. The overlap leaf spring member 4 includes a first leaf spring 6 having an end 6a fixed to the column 3, a second leaf spring 9 coupled to the first leaf spring 6 by a connection member 8, and And a third leaf spring 10. The connecting member 5 includes a first bracket 11 fixed to the beam 2, a second bracket 12 fixed to the second leaf spring 9, and an oblique member that connects the first bracket 11 and the second bracket 12. 13.

  The first leaf spring 6 is a long leaf spring, and both end portions of an end portion 6 a on one end side and an end portion 6 b on the other end side are in contact with the column 3 and installed. And the intermediate part of this edge part 6a and 6b of this 1st leaf | plate spring 6 is non-contact with respect to the pillar 3, and is curving so that the 1st space | gap 14 may be formed between the pillars 3. . The end portion 6a is fixed to the column 3 with a screw 15, but the end portion 6b is not fixed and is in contact so that the surface of the column 3 can slide. As the material, a material that has a high hardness and generates a frictional force such as a hard rubber other than a metal plate can be selected as appropriate, but in this example, a steel plate is used. The end 6a and the end 6b correspond to “both ends” (of the first leaf spring) of the present invention.

  The second plate spring 9 is a long plate spring and is formed of a steel plate made of the same material as the first plate spring 6. The width is substantially equal to the first leaf spring 6 and the length is shorter than the first leaf spring 6. Both end portions 9a and 9b of the second leaf spring 9 are in contact with the surface of the first leaf spring 6, and the intermediate portion is bent so that the second gap 16 is formed without contact with the first leaf spring 6. ing.

  The third leaf spring 10 is a long leaf spring and is formed of a steel plate made of the same material as the first leaf spring 6. The width is substantially the same as that of the first leaf spring 6, but the length is shorter than that of the first leaf spring 6 and further shorter than that of the second leaf spring 9. Both end portions 10a, 10b of the third leaf spring 10 are in contact with the surface of the second leaf spring 9, and the intermediate portion is curved so that the third gap 17 is formed without contact with the second leaf spring 9. Yes. The second plate spring 9 and the third plate spring 10 correspond to the “second plate spring” of the present invention, and the second gap 16 and the third gap 17 correspond to the “second gap” of the present invention. .

  Each leaf spring and the second bracket 12 are connected to each other by the connecting member 8 by forming a hole (not shown) in a substantially central portion in the longitudinal direction of each leaf spring and fitting the connecting member 8 into the hole. Are connected to each other. The diameter of the hole formed in each leaf spring is set to be slightly larger than the thickness of the connection member 8 and the second gap 16 and the third gap 17 are provided. Are allowed to move to some extent in the stacking direction H (see FIG. 4, details will be described later). As an allowable range, in the case of this example, since the thickness of the second gap 16 and the third gap 17 becomes substantially zero, the thickness of each leaf spring, the second gap 16 and the third gap The sum of the maximum thickness and 17 is the range up to the case where the length of the connecting member 8 is substantially equal. The connection member 8 further passes through the overlap plate spring fixing portion 22 of the second bracket 12 and fixes each plate spring to the second bracket 12. The connecting member 8 uses a general-purpose iron screw in this example, but is not limited to this material as long as it exhibits a fixing function.

  The first bracket 11 of the connecting member 5 is a member that connects one end of the diagonal member 13 to the beam 2 and is fixed to the diagonal member in a direction substantially perpendicular to the erection direction of the beam 2, that is, in the vertical direction. A portion 18 and a beam fixing portion 19 extending in a flange shape from the diagonal member fixing portion 18 are configured. The diagonal member fixing portion 18 sandwiches one end side of the diagonal member 13 between two plates standing upright in the vertical direction, and supports the diagonal member 13 by a rotary shaft 26 so as to be rotatable. The beam fixing portion 19 is a member extending in a flange shape from the diagonal member fixing portion 18 and is fixed to the beam 2 with screws 20, and the diagonal member fixing portion 18 is set in a direction substantially perpendicular to the beam 2. It is fixed. The screw 20 is used when fixing a member to the structural housing, and is not limited to this screw as long as it exhibits its function.

  The second bracket 12 is a member that fixes the other end side of the diagonal member 13 to the overlapping leaf spring member 4, and the diagonal member fixing that supports the other end side of the diagonal member 13 so as to be rotatable on the rotation shaft 23. It is comprised from the part 21 and the laminated leaf | plate spring fixing | fixed part 22 which fixes the diagonal material fixing | fixed part 21 to the laminated leaf | plate spring member 4. As shown in FIG. The diagonal member fixing portion 21 supports the other end side of the diagonal member 13 so as to be rotatable. The overlap leaf spring fixing portion 22 is a flange-like member extending from the diagonal member fixing portion 21 so as to contact the surface of the third leaf spring 10, and the first leaf spring 6 and the second leaf spring are connected by the connecting member 8. A third leaf spring 10 is fixed together with the leaf spring 9.

  As described above, the diagonal member 13 is connected to the diagonal member fixing part 18 of the first bracket 11 on one end side and to the diagonal member fixing part 21 of the second bracket 12 on the other end side in a rotatable state.

  In this example, the reinforcing members 30 and 31 are attached to the pillar 3. The reinforcing members 30 and 31 reduce the bumps of the column 3 due to the contact of the connecting member 8 when the leaf springs slide and the sliding friction of the first leaf spring 6. Further, by installing the reinforcing member 31, it is possible to increase the sliding resistance at the end portion 6b of the first leaf spring 6 and to exhibit a higher frictional force. The reinforcing member 30 or the reinforcing member 31 may be installed by adding another member different from the pillar 3 or may be a member configured integrally with the pillar 3.

  In addition, since the damping member 1 of this example is particularly suitably used for a wooden building or the like, the beam 2 and the column 3 are examples of a wooden structural frame erected based on a wooden frame construction method. Are listed. In addition to this, the damping member 1 is also preferably used for a wooden frame wall construction method, a wooden panel construction method, a log construction method, a log house, or the like.

  Then, the installation method of the damping member 1 is demonstrated based on FIG. In this example, the case where the damping member 1 is installed in the wooden house is illustrated. First, the installation position of the first bracket 11 to the beam 2 or the column 3 is determined.

  Furthermore, the diagonal material 13 suitable for the installation state is selected from a plurality of diagonal materials prepared in advance. A plurality of diagonal materials with different lengths and thicknesses are prepared and prepared in advance at the installation site so as to cope with various variations in the installation state. Sorting is done from the prepared diagonal materials.

  Next, the first bracket 11 is fixed to the determined installation position using the screw 20. Then, one end side of the diagonal member 13 is connected to the diagonal member fixing part 18 via the rotation shaft 26, and the other end side of the diagonal member 13 is connected to the diagonal member fixing part 21 via the rotation shaft 23. Then, the first leaf spring 6 is brought into contact with the pillar 3 and a screw 15 is driven to fix the first leaf spring 6. Further, the installation position of the damping member 1 is determined while tightening the screws 20 and 15. Thus, the vibration damping member 1 is installed.

  Subsequently, the damping action of the damping member 1 will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram showing a state of the damping member 1 when a force is applied in the direction indicated by the arrow A1 by vibration and the column 3 is tilted in the direction indicated by the arrow A1, and FIG. It is the figure which showed the state of the damping member 1 when force is added to the direction shown to (3) and the pillar 3 inclines to the direction shown to arrow A2. 3 and FIG. 4, the alternate long and two short dashes line portion represents the position of the overlapping leaf spring member 4 or the like in a state where the column 3 is erected substantially vertically (when not tilted).

  First, a case where a relatively small vibration (hereinafter, simply referred to as “small vibration”) such as a medium-scale earthquake or traffic vibration occurs will be described. When a small vibration is generated in a building or the like, the vibration is transmitted to the beam 2 or the pillar 3, etc., and for example, as shown in FIG. 3, it is assumed that the pillar 3 standing on the beam 2 is inclined in the direction of arrow A1. . Then, the end portion 6a of the first leaf spring 6 fixed to the column 3 is pulled in the direction of the arrow A1 following the movement of the column 3 (two-dot chain line portion → solid line portion).

  Here, although the diagonal member 13 and the second bracket 12 are rotatably connected, a predetermined frictional force (generated between the diagonal member fixing portion 21 and the diagonal member 13 is generated on the rotary shaft 23 portion. Frictional force) is working. Similarly, a predetermined frictional force is also applied to the connection point (rotating shaft 26) between the diagonal member 13 and the first bracket 11, and a larger force than the sum of these frictional forces is applied to the damping member 1. The rotation shafts 23 and 26 are configured so as not to rotate unless they are added. That is, even if the column 3 and the end portion 6a of the first leaf spring 6 are swung by vibration, as long as the energy is not sufficiently larger than the frictional force, the connection angle between the second bracket 12 and the diagonal member 13 is It does not change, and the inclination angle of the diagonal member 13 does not change. Accordingly, the position of the rotation shaft 23 does not change, and only each leaf spring is pulled by the column 3 and deformed.

  Specifically, the position of the rotation shaft 23 does not change, and the end 6a of the first leaf spring 6 is pulled in the direction of the arrow A1. If it does so, since it will be in the state which picked up each long leaf | plate spring in the center vicinity, as shown in FIG. 3, each leaf | plate spring will deform | transform in the direction which curves more largely. That is, the first gap 14 between the column 3 and the first leaf spring 6 becomes larger and becomes the first gap 24, and the end 6b slides toward the center in the direction of the solid line arrow. Both end portions 9a, 9b and 10a, 10b of the second plate spring 9 and the third plate spring 10 also slide. That is, since the first gap 14, the second gap 16, and the third gap 17 are provided, the sliding amount is increased even with a small vibration, as compared with the conventional stacked leaf spring in which the leaf spring is in close contact.

  When the end 6b of the first leaf spring 6 slides as described above, frictional heat due to friction is generated between the pillar 3 and vibration energy is converted into heat energy. Similarly, frictional heat due to friction is generated between the first leaf spring 6 and the second leaf spring 9 and between the second leaf spring 9 and the third leaf spring 10, and the vibration energy is heated. Since it is converted into energy and the sliding amount becomes larger than that of the laminated leaf spring in which the leaf spring is in close contact, the amount of transformation is also increased, and the vibration applied to the column 3 is effectively damped.

  On the other hand, when a small vibration occurs in a building or the like in a direction opposite to the vibration direction in FIG. 3, a case is assumed in which the column 3 is inclined in the direction of arrow A2, as shown in FIG. Then, the end portion 6a of the first leaf spring 6 fixed to the column 3 moves in the direction of the arrow A2 following the movement of the column 3 (two-dot chain line portion → solid line portion). As described above, here, it is assumed that the frictional force acting on the rotary shafts 23 and 26 is larger than the vibration energy, so the position of the rotary shaft 23 does not move, and the first leaf spring 6 and the second plate. The curved state of the spring 9 and the third leaf spring 10 is deformed.

  Specifically, since the end portion 6a of the first leaf spring 6 is pushed in the direction of the arrow A2 and the position of the rotation shaft 23 does not move, each leaf spring extends in the direction of the solid arrow approaching the beam 2 and deforms. That is, the first gap 14 between the column 3 and the first leaf spring 6 becomes smaller and becomes the first gap 25, and the end 6b slides in the direction approaching the beam 2, and similarly, the second plate Since both ends 9a, 9b and 10a, 10b of the spring 9 and the third leaf spring 10 slide, the sliding amount becomes larger than the overlap leaf spring in which the leaf springs are in close contact even with small vibrations. The vibration that is increased and effectively applied to the column 3 is damped.

  By the way, when the end portion of each leaf spring does not slide, frictional heat is not generated, so that a sufficient damping effect cannot be obtained. For example, when the first plate spring 6 is not curved and is in close contact with the column 3 (when there is no first gap 14), or the first plate spring 6, the second plate spring 9, and the third plate spring 10 are mutually connected. In the case of close contact (when there is no second gap 16 or third gap 17), each leaf spring slides unless a relatively large vibrational energy exceeding the large frictional force generated by the close contact is applied. Does not occur. Then, since frictional heat does not occur and vibration energy is not converted into heat energy, there is a concern that a vibration damping effect cannot be obtained during small vibrations. On the other hand, according to the damping member 1 of the present example, the first leaf spring 6 is curved so that the first gap 14 is formed with respect to the column 3. That is, since only the end portion 6a and the end portion 6b are in contact with the column 3, the frictional force between the column and the column 3 is suppressed to a minimum as compared with the case where the column 6 is in contact with the entire surface. Thereby, the highly sensitive damping member 1 which can exhibit the damping effect also with respect to a comparatively small vibration can be provided. Similarly, since the second leaf spring 9 and the third leaf spring 10 are respectively curved and provided with a gap, only the end portions 9a, 9b and 10a, 10b are in contact with each other, so that the damping member 1 with higher sensitivity can be obtained. Can be provided.

  When a relatively large vibration energy such as a large-scale earthquake (hereinafter simply referred to as “large vibration”) is applied, as shown in FIGS. 5 (a) and 5 (b), the rotation shaft 26 is the center. Simultaneously with the rotation of the diagonal member 13, the connecting angle between the diagonal member 13 and the second bracket 12 changes. That is, since the frictional force acting on the rotating shaft 23 and the vibrational energy acting on the rotating shaft 26 are applied, the connecting angle between the diagonal member 13 and the second bracket 12 changes. As described above, according to the damping member 1 of the present example, the diagonal member 13 is rotatably connected to the rotary shafts 23 and 26, so that the diagonal member 13 is corresponding to the inclination of the column 3 during a large vibration. It is possible to prevent the diagonal member 13 from being broken and the rotating shafts 23 and 26 from being broken. Accordingly, it is possible to provide the vibration damping member 1 that is not easily broken.

  Next, an installation pattern example of the vibration damping member 1 of this example will be described with reference to FIG. Since the vibration damping member 1 of this example is a small one mainly composed of the overlapping leaf spring member 4 and the connecting member 5, it can cope with various installation patterns according to the purpose and the conditions of the installation location. For example, as shown in FIG. 6A, in a closed space composed of a pair of beams 2 and a pair of pillars 3, it can be installed in all four joint portions. In addition, as shown in FIG. 6 (b), it may be installed only in the upper two joints, or illustration is omitted, but the necessary number of joints is installed according to the situation. can do. According to the vibration damping member 1 of the present example, the number of constituent elements is small and simple. Therefore, the vibration damping member 1 is very suitable for downsizing, and the installation variation can be selected flexibly.

  Moreover, as shown in FIG.6 (c), it is also possible to combine the brace 27 and the damping member 1. FIG. If comprised in this way, the bearing wall which has both the reinforcement effect by the bracing 27 and the vibration suppression effect by the damping member 1 is realizable.

  Further, by fixing the first leaf spring 6 to the beam 2, it is possible to cope with pitching. For example, as shown in FIG. 6 (d), the damping member 1 in which the first leaf spring 6 (see FIG. 1; the same applies hereinafter) is fixed to the column 3, and the first leaf spring 6 to the beam 2. By using together with the vibration damping member 1 to which is fixed, it is possible to simultaneously take measures against pitching and rolling.

  As described above, according to the vibration damping member 1 of the present example, the first leaf spring 6, the second leaf spring 9, and the third leaf spring 10 are curved so that the first gap 14, the second gap 16, Since the third gap 17 and the like are provided, it is possible to effectively suppress relatively small vibrations such as traffic vibrations. Furthermore, since only the end portion 6a is fixed and the end portion 6b is not fixed, the first leaf spring 6 exhibits a further damping effect by sliding of the end portion 6b.

  In addition, according to the vibration damping member 1 of this example, it is possible to suppress vibrations of both vertical and horizontal vibrations applied to a building or the like by combining the installation directions of the overlapping leaf spring members 4. is there. Furthermore, since it is easy to downsize, it can be suitably installed in a wooden building where the interval between the pillars 3 is relatively narrow. In addition, it is possible to flexibly cope with renovations with different building conditions.

  Furthermore, according to the vibration damping member 1 of the present example, a simple structure with long gaps (first plate spring 6, second plate spring 9, and third plate spring 10) provided with a gap is provided. The leaf spring member 4 is applied. In addition, since the diagonal member 13 is rotatably connected to the rotation shafts 23 and 26, the robust damping member 1 that can withstand both small vibrations and large vibrations can be provided.

  The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to these embodiments, and various improvements can be made without departing from the scope of the present invention as described below. And design changes are possible.

  That is, according to the damping member 1 of the present example, the diagonal member 13 is rotatably connected at both ends, but only one of them (the rotation shaft 23 or the rotation shaft 26) can be rotated, The other may be fixed so as not to rotate. Moreover, you may fix both ends so that rotation is impossible. However, by connecting both ends in a pivotable manner, the degree of freedom when installing the damping member 1 is increased, and damage when subjected to large vibrations can be avoided. Is more preferable.

  Further, according to the damping member 1 of the present example, only the end portion 6 a of the first leaf spring 6 is fixed to the column 3, but the end portion 6 b may be further fixed to the column 3. However, it is more preferable to adopt a configuration in which only the end portion 6a is fixed as in this example, because a vibration damping effect by sliding of the end portion 6b can be obtained.

It is a front view which shows the use condition of a damping member. It is a right view which shows the use condition of a damping member. It is explanatory drawing which showed the state of the damping member when a column inclines in the direction shown by arrow A1. It is explanatory drawing which showed the state of the damping member when a column inclines in the direction shown by arrow A2. (A) is explanatory drawing which showed an example of the state of the damping member at the time of a large vibration, (b) is explanatory drawing which showed the other example of the state of the damping member at the time of a large vibration. It is explanatory drawing which shows the example of a variation of the installation pattern of a damping member.

Explanation of symbols

1,28 Damping member 2 Beam (horizontal structure)
3 pillars (vertical structure)
4 Laminated leaf spring member 5 Connecting member 6 First leaf spring 6a, 6b Both ends 8 Connection member 9 Second leaf spring 9a, 9b Both ends 10 Third leaf spring (second leaf spring)
11 First Bracket 12 Second Bracket 13 Diagonal Material 14, 24, 25 First Gap 16 Second Gap 17 Third Gap (Second Gap)

Claims (3)

A vibration damping member installed at a joint portion of a wooden horizontal structural frame constructed in a substantially horizontal direction and a wooden vertical structural frame supported in a substantially vertical direction with respect to the horizontal structural frame,
It is a long leaf spring, and both end portions are in contact with either the horizontal structural housing or the vertical structural housing, and the middle portion forms a first gap with respect to the structural housing. The first leaf spring, which is curved as
One or a plurality of elongated leaf springs, both ends of which are slidably in contact with the first leaf spring, and the intermediate portion has a second gap with respect to the first leaf spring. A second leaf spring that is curved to form,
And a connecting member that bundles the first plate spring and the second plate spring in the vicinity of the center,
A laminated leaf spring member having
A damping member, comprising: a coupling member that couples the second leaf spring to the other structural housing. One end of the first leaf spring is fixed to the contacting structural housing, and the other end is slidably contacted to the one structural housing. The vibration damping member according to claim 1, wherein: The connecting member is
A first bracket fixed to the other structural housing;
A second bracket fixed to the second leaf spring;
The diagonal bracket is arranged obliquely by connecting the first bracket and the second bracket,
The damping member according to claim 1 or 2, wherein the diagonal member is rotatably connected to at least one of the first bracket and the second bracket.

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