JP5005987B2 - Access blocking device - Google Patents

Description

  The present invention relates to an entry blocking device, and in particular, an entry blocking arranged at an entrance / exit of a predetermined area in order to block a person from entering a predetermined area between a seismic isolation structure and another structure. It relates to the device.

  In recent years, seismic isolation structures have been proposed for the purpose of minimizing damage to structures caused by earthquakes and are now widely implemented. This seismic isolation structure can be explained by taking a detached house as an example. The seismic isolation device is interposed between the foundation and the foundation, and the seismic isolation device propagates the ground vibration due to the earthquake to the building. A structure that prevents being done. By the way, when building such a base-isolated structure, especially a base-isolated house, if there are other structures that are not seismically isolated, such as eaves, at least within the range displaced by the earthquake, The base-isolated house (base-isolated structure) will collide with other structures.

  Therefore, a certain interval must be provided between the seismic isolation structure and other structures. However, if the distance between this seismic isolation structure and other structures is wide, there is little danger even if there is a person at the time of the earthquake within this distance, but if it is narrow, the seismic isolation structure There is a risk that it will be caught between and other structures. Thus, in order to avoid such a risk, conventionally, a barrier fence using a movable pipe and a flexible joint body (see Patent Document 1) has been proposed.

  This barrier fence is provided with a support column on each of the seismic isolation structure side and the other structure side that is intended to block people from entering, and a rubber tube and a coil spring A pipe-shaped base tube is laid sideways with the opposing surfaces separated from each other through a flexible joint body combined with each other, and a small-diameter connecting rod is slidably inserted into the hollow portion of the pair of base tubes. Is. When the distance between the pair of support columns changes due to the operation of the seismic isolation device, the base tube expands and contracts by sliding along the outer periphery of the connecting rod at the intermediate position, and the change in the distance between the pair of support columns. It is intended to follow the amount.

JP 2000-110414 A

  However, since the pair of base tubes in the conventional technique is configured to expand and contract by sliding along the outer periphery of the small-diameter connecting rod, the minimum distance between the pair of support columns is the total length of the pair of base tubes, Or, since it is limited by the total length of the connecting rod, there is a problem that it cannot be installed when the distance between the seismic isolation structure and the other structure is narrow.

  Therefore, the present invention has been proposed in order to solve the problem of the above-described prior art approach blocking device, and even when the distance between the seismic isolation structure and other structures is narrow, An object of the present invention is to provide an approach blocking device that can be installed.

In order to achieve the above-described object, an approach blocking apparatus according to the first invention (the invention described in claim 1) includes a seismic isolation structure provided with a seismic isolation device and other seismic isolation structures adjacent to the seismic isolation structure. An intrusion blocking device that blocks a gap formed between a structure and a person, and prevents a person from entering, and includes a plurality of shielding members and a plurality of the shielding members connected in a flexible manner. A second connecting member that connects the seismic isolation structure and the shielding member located closest to the seismic isolation structure among the shielding members constituting the shielding unit; And a third connecting member for connecting the other structure to the other member in such a way as to be able to bend and stretch freely. Displacement between the seismic isolation structure and the other structure is the first to third connections. Thereby absorbed through the timber, one of the most seismic isolation structure side or other structure side of the shielding member constituting the shielding unit, idler strut which is freely floating is arranged, the floating strut And the shielding member are connected to each other via a connecting member so as to be able to bend and extend, and a fixed member having a length in the vertical direction is fixed to the seismic isolation structure or other structure, and the floating strut One or a plurality of wire rods are arranged in a horizontal direction between the floating support and the fixing member, and the distance between the floating support and the fixing member is displaced by the occurrence of an earthquake in either the floating support or the fixing member. However, a tension holding mechanism for holding a constant tension so that the wire is always horizontal is provided .

  In the first aspect of the invention, a plurality of shielding members, a first connecting member obtained by connecting the plurality of shielding members so as to be able to bend and stretch, a shielding member located closest to the seismic isolation structure, and the seismic isolation A second connecting member that connects the structure so as to be able to bend and stretch; a shielding member that is positioned closest to the other structure; and a third connecting member that connects the other structure so that the structure can freely be stretched; Since the displacement between the seismic isolation structure and the other structure due to the occurrence of this is absorbed through the first to third connecting members, the distance between the seismic isolation structure and the other structure is The angle of each connecting portion of the plurality of shielding members connected to the first to third connecting members opens in a straight line, and is maximized when formed in a single plane by the plurality of shielding members. The angle of each connecting portion of the shielding member is buckled, and the respective surfaces of the shielding member are in close contact with each other, Smallest in the state in which the adhesion-shaped chevron is formed by several of the shielding member.

  Therefore, the component of the present invention does not limit the minimum distance between the seismic isolation structure and the other structure by the component itself, and the distance between the seismic isolation structure and the other structure is narrow. Even can be installed. That is, the minimum distance between the base isolation structure and the other structure is only limited by the overlapping thickness of the plurality of shielding members, and therefore the distance between the base isolation structure and the other structure. It can be installed even if it is narrow.

  The maximum distance between the seismic isolation structure and other structures is determined by the number of the plurality of shielding members and the width of each shielding member. Therefore, it is preferable that the shielding members each have a small thickness, and the width of each of the plurality of shielding members and the number thereof (preferably corresponding to the distance between the seismic isolation structure on the construction site and other structures). 2 to 4 plate members, mesh members, fence members, etc.) may be set. Further, the bending posture of the plurality of shielding members in a normal state is a bending posture corresponding to an intermediate position between the set maximum interval and the minimum interval (the plurality of shielding members are V-shaped, W-shaped, etc. For example, when the shielding member is made of two plates, the angle between adjacent shielding members is a V-shaped mountain shape with an angle of approximately 60 degrees. Each of the connecting members may be a member that can be opened and closed about a shaft, and for example, a hinge or a door hinge can be used. Further, the other structure may be a structure having a seismic isolation structure as well as a anchor fixed to the ground and a structure having no seismic isolation structure.

Further, the inventions of this, one of the most seismic isolation structure side or other structure side of the shielding member constituting the shielding unit, idler strut which is freely floating is arranged, the floating strut And the shielding member are connected to each other via a connecting member so as to be able to bend and extend, and a fixed member having a length in a vertical direction is fixed to the seismic isolation structure or other structure, and the floating strut One or a plurality of wire rods are arranged in a horizontal direction between the floating support and the fixing member, and the distance between the floating support and the fixing member is displaced by the occurrence of an earthquake in either the floating support or the fixing member. However, a tension holding mechanism for holding a constant tension so that the wire is always horizontal is provided.

The inventions of this, the shielding member and the idler strut through a connecting member is bent and stretched rotatably connected, with the seismic isolation structure or other structure fixed member having a length in the vertical direction becomes fixed One or a plurality of wire rods are horizontally arranged between the floating struts and the fixing member, and either one of the floating struts or the fixing member has an interval between the floating struts and the fixing member. be displaced by the generation, the tension holding mechanism for holding the constant tension to the wire is always horizontally disposed, since between the floating strut and the fixed member can be widened, portion of the shielding unit includes a plurality It is not necessary to set the shielding member in the normal position to the middle position between the maximum widening and the minimum shrinking when the bending posture is V-shaped or W-shaped. Set to a posture that forms a flat surface Rukoto can also.

  That is, when the interval between the floating strut and the fixing member is wider than normal, one or more wires arranged in the horizontal direction have a constant tension so that the wire is always horizontal by the tension holding mechanism. Therefore, the interval between both ends of the shielding unit does not need to be widened. Therefore, when the distance between the seismic isolation structure and the other structure is displaced due to the occurrence of the earthquake, when the width is reduced relative to the normal time, it corresponds by the bending and stretching of each shielding member constituting the shielding unit, When the width is increased with respect to the normal time, it is possible to cope with a wide range of displacement by dealing with the portion of the wire according to the second invention. In addition, the tension holding mechanism should just be installed in either the floating support | pillar or the fixing member.

Further, according to a second invention (invention according to claim 2 ), in the first invention, the fixing member is fixed to the seismic isolation structure, the floating support column is formed in a hollow shape, Openings corresponding to the number of the wire rods are formed in the side plate portions constituting the floating struts, one end of the wire rod is fixed to the fixing member, the middle portion is inserted through the opening, and the other end is The wire rod is fixed to a weight disposed in the floating column, and the wire rod is maintained even if the distance between the floating column and the fixed member is displaced due to an earthquake by the tension holding mechanism including the floating column, the wire, and the weight. Is always horizontal.

In this second invention, the fixing member is fixed to the seismic isolation structure, the wire is fixed at one end to the fixing member, the midway portion is inserted through the opening, and the other end is disposed in the floating column. Since the wire is always horizontal even if the distance between the floating strut and the fixing member is displaced by the occurrence of an earthquake, the shielding member is fixed to the weight by the tension holding mechanism composed of the floating strut, the wire and the weight. Even if the lower end of the shield extends to a position below the movable base part of the base isolation structure (downward from the top end of the foundation), the lower end of the shielding member becomes a fixed part including the foundation of the base isolation structure There is no contact.

  That is, when the fixing member is fixed to another structure, since the fixing member and the shielding member on the opposite side of the floating support are fixed to the seismic isolation structure, the upper part from the base portion together with the shielding member is affected by the earthquake. This is because, when displaced inside the seismic structure, the lower end of the shielding member fixed to the seismic isolation structure comes into contact with a fixed portion including the base of the seismic isolation structure. Moreover, since the tension | tensile_strength of a wire is kept constant with the weight of a weight, a structure can be comprised simply.

  Further, according to a fourth invention (invention according to claim 4), in the first, second or third invention, there is a middle portion of the wire inserted through the opening on the inner side of the side plate constituting the floating support column. A guide car for guiding the section is provided. In the fourth aspect of the invention, since a guide wheel is provided on the inner side of the side plate that constitutes the floating strut to guide the middle part of the wire rod inserted through the opening, the distance between the floating strut and the fixing member is an earthquake. When the wire moves due to the displacement due to the occurrence, the wire can move smoothly, and the tension of the wire can be kept constant even if the weight of the weight of the tension holding mechanism is small.

  In the first invention (the invention described in claim 1), the constituent elements related to the approach blocking apparatus of the present invention limit the minimum distance between the seismic isolation structure and other structures by the constituent elements themselves. Therefore, it can be installed even when the distance between the seismic isolation structure and the other structure is narrow. Moreover, since the component which concerns on this invention can use what is marketed as a normal building material etc., for example, by carrying out a commercial item about a shielding member, it is with material shape, such as plate shape, a wire-mesh shape, or a fence shape. The appearance of colors, patterns, etc. can also be freely selected according to the customer's preference, and the appearance can be adjusted.

Further, in the present invention, the occurrence of an earthquake, even if between the floating member and the fixed member is widened, is always the wire between them is located, portions of the shielding蔽unit, It is not necessary to set the bending posture of the plurality of shielding members at the middle position between the maximum widening and the minimum shrinking when the bending and stretching postures at the normal time are V-shaped or W-shaped. It can also be set to a posture in which a single planar shape is formed by the member, and a normal appearance can be improved. Therefore, when the distance between the seismic isolation structure and other structures is displaced due to the occurrence of an earthquake, if the width is reduced with respect to the normal time, it corresponds to the portion of the shielding unit and is widened with respect to the normal time. when the can, by corresponding it with portions of the wire according to the inventions of this, can accommodate a wide range of displacement. That is, the degree of freedom in design is improved.

In the second invention (the invention described in claim 2 ), the fixing member is fixed to the seismic isolation structure, and the wire rod does not move even if the distance between the floating strut and the fixing member is displaced by the occurrence of the earthquake by the tension holding mechanism. Since the lower end of the shielding member extends to a position below the movable base portion of the seismic isolation structure, the lower end of the shielding member is fixed to the fixed part including the foundation of the seismic isolation structure. There is no contact. Therefore, the lower end of the shielding member can be extended to the vicinity of the ground surface, it is possible to prevent the entry of an infant with a short height and the like, and it is possible to further improve the human entry blocking function. Further, since the tension of the wire is kept constant by the weight of the weight, the apparatus can be configured simply and inexpensively.

In the third invention (the invention according to claim 3 ), a guide wheel for guiding a midway portion of the wire inserted through the opening is provided on the inner side of the side plate constituting the idler support column. When the wire moves due to the distance between the fixed member and the fixed member being displaced by the occurrence of an earthquake, the wire can move smoothly, and even if the weight of the tension holding mechanism is small, the tension of the wire can be kept constant. it can.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. First, the approach blocking apparatus 1 according to the first embodiment shields a gap formed between another structure 3 adjacent to the seismic isolation structure 2 as shown in FIGS. 1 and 2. This is a device for blocking the entry of a person, and the first to third shielding plates 5A, 5B, 5C and the hinges for connecting the first to third shielding plates 5A, 5B, 5C in a flexible manner. 6, a mounting member 9 fixed to the seismic isolation structure 2, a hinge 7 that flexibly connects the mounting member 9 and the first shielding plate 5 </ b> A, and a third It is comprised with the hinge 8 which connects the shielding board 5C and the other structures 3 so that bending is possible.

  First, in the seismic isolation structure 2, as shown in FIG. 1, a large number of upright members 12 are erected on a foundation 11 laid on the ground, and a steel base 13 is arranged on the upper surface side of these upright members 12. A base 14 is disposed on the upper surface, and a structure such as a column 15 is disposed on the upper surface. The upper structure including the steel frame 13 is supported by a seismic isolation device (not shown), and when the ground vibrates due to the occurrence of an earthquake, only the foundation 11 and the standing member 12 vibrate or swing together with the ground. In addition, since vibration is not propagated to the upper structure including the steel base 13 due to the operation of the seismic isolation device, the structure does not vibrate or swing, and damage due to the vibration or swing of the earthquake can be prevented. it can.

  On the side surface of the outer wall (or outer plate) 16 adjacent to the pillar 15 of the seismic isolation structure 2, a mounting member 9 having a length in the vertical direction and formed in a rectangular hollow body is fixed. 9 is connected to the first shielding plate 5A. In addition, as the above-mentioned seismic isolation device, those using a roller member, those using a sliding member, those using a rubber member, etc. are known. It can be implemented by any method.

  Further, as shown in FIGS. 1 and 2, the shielding unit 4 constituting the entry blocking device 1 has first to third shielding plates 5A, 5B, 5C, which are shielding members of the present invention, arranged vertically. The adjacent shielding plates 5A, 5B, and 5C can be bent and extended by the six hinges 6 in total, each of which is the first connecting member of the present invention. It is connected as there is. Of these, the first shielding plate 5A located closest to the seismic isolation structure 2 is connected to the attachment member 9 so as to be able to bend and stretch by the three hinges 7 which are the second connecting members of the present invention. Further, the third shielding plate 5C located on the most other structure 3 side is connected to the other structure 3 so as to be able to bend and stretch by the three hinges 8 which are the third connecting members of the present invention. .

  With this configuration, when the distance between the seismic isolation structure 2 shown in FIGS. 1 and 2 and the other structure 3 becomes narrower than shown, the first and third shields are operated by the bending and extending operations of the hinges 6, 7, and 8. When the plates 5A, 5B, 5C are buckled and the distance between the seismic isolation structure 2 and the other structure 3 is closest, the surfaces of the first to third shielding plates 5A, 5B, 5C are in contact with each other. It becomes a state. In addition, these 1st thru | or 3rd shielding board 5A, 5B, 5C is not limited to a board | plate material, For example, a net-like member, a member for a fence, etc. can be utilized.

  Next, functions and effects will be described while explaining a method of using the approach blocking apparatus 1 according to the first embodiment described above. In addition, when an earthquake occurs, the actual displacement with the ground is the other structure 3 that is not the seismic isolation structure and the ground side of the seismic isolation structure 2 (base 11, standing member 12). Since vibrations or fluctuations caused by earthquakes are not propagated to the structure 2, the seismic isolation structure 2 is not displaced in principle. However, in FIGS. The object 2 is described as being relatively displaced. 3 and 4 is an operation track of the seismic isolation structure 2 in the case of the first embodiment, and is attached to the mounting member 9 on the seismic isolation structure 2 side. The operating range of the hinge 7 attached is shown.

  First, assuming that the operating range of the seismic isolation structure 2 is within the range of the seismic isolation structure operating track U shown in FIG. 3, the distance between the seismic isolation structure 2 and the other structure 3 is three shields. As shown in FIG. 3A, the angles of the connecting portions of the plates 5A, 5B, and 5C open in a straight line and are formed in a single plane by the first to third shielding plates 5A, 5B, and 5C. The distance between the hinge 7 and the hinge 8 is maximized in the bending posture. Further, the angles of the connecting portions of the first to third shielding plates 5A, 5B, and 5C are buckled, and as shown in FIG. 3C, the surfaces of the shielding plates 5A, 5B, and 5C are in close contact with each other. The distance between the hinge 7 and the hinge 8 is minimized in a bent and extended posture in which a close chevron is formed by the shielding plates 5A, 5B, and 5C.

  Therefore, the setting of the bending postures of the first to third shielding plates 5A, 5B, 5C in the normal state is determined by the range of the seismic isolation structure operating track U shown in FIG. And the side surface 3T of the other structure 3 may be set to a mountain-shaped bending and stretching posture at an intermediate position between the maximum interval shown in FIG. 3A and the minimum interval shown in FIG. (Refer FIG.3 (b)). By setting in this way, the range in which the hinge 7 portion on the seismic isolation structure 2 side can be displaced is omnidirectional within the seismic isolation structure operation track U with respect to the normal state shown in FIG. The first to third shielding plates 5A, 5B, 5C can be bent and stretched.

  And, for example, when the normal posture is set to the neutral position shown in FIG. 3B, the distance between the side surface 2T of the seismic isolation structure 2 and the side surface 3T of the other structure 3 due to the occurrence of an earthquake. When the width is widened and the state shown in FIG. 3A or approaches this state, the displacement amount due to the widening is absorbed by the bending and stretching operation of the connecting member consisting of the hinges 6 to 8, and the first to third shieldings are performed. Each connecting portion of the plates 5A, 5B, 5C operates in an open state as shown. Similarly, when the width is reduced and the state shown in FIG. 3C is approaching or approaching, the displacement amount due to the reduced width is absorbed by the bending operation of the connecting member consisting of the hinges 6 to 8, and the first to third Each connecting portion of the shielding plates 5A, 5B, 5C operates in a buckled state as shown.

  As another example of the first embodiment described above, the three shielding plates 5A, 5B, and 5C described above are replaced with the two shielding plates 105A and 105C shown in FIG. A configuration identical to the case will be described. Also in this example, the distance between the seismic isolation structure 2 and the other structure 3 is such that the angles of the connecting portions of the two shielding plates 105A and 105C are straight as shown in FIG. 4 (a). Maximum in an open and extended posture. Further, the angle of each connecting portion of the two shielding plates 105A and 105C is buckled, and is minimized in a bent and extended posture approaching close contact as shown in FIG.

  Therefore, the setting of the bending postures of the two shielding plates 105A and 105C in the normal state is determined by the range of the seismic isolation structure operation track U shown in FIG. 4, and the side surface 2T of the seismic isolation structure 2 and other structures 3 may be set to a mountain-shaped bending / stretching posture at an intermediate position between the maximum interval shown in FIG. 4A and the minimum interval shown in FIG. 4C (FIG. 4B). reference). By setting in this way, the range in which the hinge 7 portion on the seismic isolation structure 2 side can be displaced is omnidirectional in the seismic isolation structure operation track U with respect to the normal state shown in FIG. The two shielding plates 105A and 105C can be bent and stretched.

  And when the space | interval of the side surface 2T of the seismic isolation structure 2 and the side surface 3T of the other structure 3 is expanded or reduced by generation | occurrence | production of an earthquake, the bending operation of the connection member which consists of the said hinges 6 thru | or 8 is carried out. It operates in the state shown in FIG. 4A or a state approaching this state, or in the state shown in FIG. As described above, the function and effect of the two shielding plates 105A and 105C of this example are the same as those of the three shielding plates 5A, 5B, and 5C shown in FIG. 3 described above. That is, if the number of shielding plates used by the shielding unit is determined by the width of the shielding plate, the distance between the seismic isolation structure 2 and the other structure 3, the range of the seismic isolation structure operating track U, the aesthetic choice, etc. Good.

  As is apparent from the above description, according to the first embodiment, the bending and stretching operations of the shielding plates 5A, 5B and 5C shown in FIG. 1 (or the shielding plates 105A and 105C shown in FIG. 4) are used. Therefore, there is nothing to limit the minimum distance between the seismic isolation structure 2 and the other structure 3, and the installation is ensured even when the distance between the seismic isolation structure 2 and the other structure 3 is narrow. can do. Moreover, since the component which concerns on this invention can use what is marketed as a normal building material etc., for example, by using a commercial item about a shielding member, material shape, such as plate shape, a wire-mesh shape, or a fence shape, is used. At the same time, appearances such as colors and patterns can be freely selected according to the taste of the customer, the aesthetic appearance can be adjusted, and the apparatus can be configured at low cost.

  Next, a second embodiment will be described with reference to the drawings. As shown in FIGS. 5 and 6, the entry blocking device 21 according to the second embodiment shields a gap formed between another structure 23 adjacent to the seismic isolation structure 22. This is a device for blocking the entry of a person, and the first to third shielding plates 25A, 25B, and 25C and the hinge 26 that connects these first to third shielding plates 25A, 25B, and 25C in a flexible manner. , A hinge 27 for connecting the first shielding plate 25A and the floating support 42 so as to be able to bend and extend, and a third shielding plate 25C and another structure 23 are connected so as to be able to bend and extend. A hinge 28, a fixing member 41 fixed to the seismic isolation structure 22, a free-moving free strut 42 installed adjacent to the fixing member 41, and tensions of the two wires 43A and 43B shown in FIG. And a tension holding mechanism 40 for holding each.

  First, as shown in FIG. 5, in the seismic isolation structure 22, a large number of upright members 32 are erected on a foundation 31 laid on the ground, and a steel base 33 is disposed on the upper surface side of the upright members 32. A base 34 is disposed on the upper surface, and a structure such as a column 35 is disposed on the upper surface. The upper structure including the steel frame 33 is supported by a seismic isolation device (not shown). When the ground vibrates due to the occurrence of an earthquake, only the foundation 31 and the standing member 32 vibrate or swing together with the ground. In addition, since vibration is not propagated to the upper structure including the steel base 33 due to the operation of the seismic isolation device, the structure does not vibrate or swing, and damage due to the vibration or swing of the earthquake can be prevented. .

  A fixing member 41 having a length in the vertical direction is fixed to the side surface of the outer wall (or outer plate) 36 adjacent to the column 35 of the seismic isolation structure 22, and an adjacent position (fixing member 41 is fixed to the fixing member 41). On the opposite side of the seismic isolation structure 22 between which is placed, a freely-movable idler column 42 described later is disposed. The fixing member 41 and the floating column 42 are provided with a tension holding mechanism 40 including two wire rods 43A and 43B and a weight 46, which will be described later (see FIGS. 7 and 8). In addition, as the above-mentioned seismic isolation device, those using a roller member, those using a sliding member, those using a rubber member, etc. are known. It can be implemented by any method.

  Further, as shown in FIGS. 5 and 6, the shielding unit 24 constituting the entry blocking device 21 is provided with first to third shielding plates 25A, 25B, 25C which are shielding members of the present invention vertically. The adjacent shielding plates 25A, 25B, and 25C can be bent and extended by a total of six hinges 26, each of which is the first connecting member of the present invention. It is connected as there is. Of these, the first shielding plate 25A located on the most seismic isolation structure 22 side is connected to a floating column 42, which will be described later, by means of three hinges 27 which are the second connecting members of the present invention. Yes. In addition, the third shielding plate 25C located on the most other structure 23 side is connected to the other structure 23 so as to be able to bend and stretch by the three hinges 28 which are the third connection members of the present invention. .

  With this configuration, when the distance between the seismic isolation structure 22 and the other structure 23 shown in FIGS. 5 and 6 is narrower than illustrated, the first and third shields are operated by the bending and extending operations of the hinges 26, 27, and 28. When the plates 25A, 25B, and 25C are buckled and the distance between the seismic isolation structure 22 and the other structure 23 is closest, the surfaces of the first to third shielding plates 25A, 25B, and 25C are in contact with each other. It becomes a state. In addition, these 1st thru | or 3rd shielding board 25A, 25B, 25C is not limited to a board | plate material, For example, a net-like member, a member for a fence, etc. can be utilized.

  Further, one fixing member 41 on which the tension holding mechanism 40 is arranged is composed of a U-shaped angle 41A shown in FIG. 6 and a U-shaped angle 41B that is externally fitted to the angle 41A. The side surface is fixed to the side surface of the outer wall 36 (or the column 35) of the seismic isolation structure 22, and the angle 41B is externally fitted and fixed to the angle 41A to form a hollow shape.

  The other floating support 42 is composed of a U-shaped angle 42A and a U-shaped angle 42B that is externally fitted to the angle 42A. The first shielding of the shielding unit 24 is provided on the side surface of the angle 42A. The plate 25A is connected to a hinge 27 so as to be able to bend and stretch, and the angle 42B is externally fitted and fixed to the angle 42A to form a hollow shape. At the lower end portion of the floating strut 42 configured in this way, there is a rotatable wheel (not shown) shown in FIG. 7, and this wheel turns around the axial center of the hollow idle strut 42. A free caster 49 is attached, and is freely movable at a position adjacent to the fixing member 41. Further, as shown in FIG. 5 or 6, six magnets 48 are fixed to the fixing member 41 on the side surface facing the floating column 42, and the magnetic force restricts the floating of the floating column 42 during normal times. ing.

  Then, on the side surface of the fixing member 41 opposite to the seismic isolation structure 22, two wire rods 41c and 41d (in the present invention) in which the two wire rods 43A and 43B shown in FIG. Are opened vertically, and one end side of each of the two wire rods 43A and 43B is inserted into the fixing member 41 from the wire rod holes 41c and 41d. One end side of each of these wire rods 43A and 43B is fixed by a clasp 47 shown in FIG.

  Further, two wire rod holes 42c and 42d through which the two wire rods 43A and 43B can freely enter and leave are provided on the side surface of the floating support 42 facing the fixing member 41 and the wire rod holes 41c and 41d of the fixing member 41, respectively. The other ends of the two wire rods 43A and 43B are inserted from the wire rod holes 42c and 42d into the floating support column 42 at the same height. In addition, a guide groove (reference numeral is omitted) that can guide the two wire rods 43A and 43B is formed on the outer periphery immediately below the vicinity of each of the two wire rod holes 42c and 42d of the floating support column 42. Guide wheels 44A and 44B are attached.

  Then, the other end sides of the two wire rods 43A and 43B inserted into the floating support 42 are spanned and suspended in the guide grooves of the guide wheels 44A and 44B, as shown in FIG. A weight 46 is fixed to each other end. With this configuration, the two wire rods 43A and 43B are disposed between the respective one end portions fixed by the clasp 47 in the fixing member 41 and the respective other end sides to which the weight 46 is fixed. A tensile load is applied by the weight of the weight 46.

  Therefore, when the interval between the fixing member 41 and the floating column 42 is widened from the minimum interval shown in FIG. 7, the floating column 42 separates from the fixing member 41 against the magnetic force of the six magnets 48, and the wire 43A 43B, when the weight 46 is pulled up and widened, as shown in FIG. 8, the wire rods 43A and 43B are always stretched by a constant tension in the horizontal direction between the fixing member 41 and the floating column 42, respectively. It is installed and can block traffic. In addition, although the two wire rods 43A and 43B in this example are each a metal wire, the rope etc. which consist of a vegetable fiber may be sufficient.

  Next, the function and effect will be described while explaining how to use the approach blocking device 21 according to the second embodiment described above. In addition, it is the ground side (foundation 31, standing member 32) of the other structure 23 which is not a seismic isolation structure, and the seismic isolation structure 22 that is actually displaced with the ground when an earthquake occurs. Since the vibration or oscillation due to the earthquake is not propagated to the structure 22, the base isolation structure 22 is not displaced in principle. However, in FIG. It was described as a relative displacement. Further, the seismic isolation structure operating track W shown in FIG. 9 is an operating trajectory of the seismic isolation structure 22, and includes a hinge 27 attached to the floating column 42 and a fixing member 41 attached to the seismic isolation structure 22. Indicates the operating range.

  The entry blocking device 21 according to the second embodiment includes a shielding unit 24 composed of first to third shielding plates 25A, 25B, 25C on the left side and six hinges 26 shown in FIG. This is a method used in combination of the portion and the portion (see FIG. 7 or FIG. 8) of the tension holding mechanism 40 formed of the two right-hand wires 43A and 43B and the weight 46. The part of one shielding unit 24 can block the entry of a person by bending and stretching operation both when the space between the seismic isolation structure 22 and the other structure 23 is widened and when it is narrowed. The other portion of the tension holding mechanism 40 has a blocking action when exclusively widening.

  Therefore, if one portion of the shielding unit 24 is reduced in width from the state shown in FIG. 5 and the other portion of the tension holding mechanism 40 is enlarged from the state shown in FIG. It is easy to cope with a case where the seismic isolation structure operation track W shown in FIG. Further, by this specialization, the three shielding plates 25A, 25B, 25C in the portion of the shielding unit 24 can be opened in a single flat state at normal times, so that the appearance can be improved. Hereinafter, description will be made based on this embodiment.

  Among these, the part of one shielding unit 24 assumes that the operating range of the seismic isolation structure 22 is within the range of the seismic isolation structure operating track W shown in FIG. The distance between the side surface 22T and the side surface 23T of the other structure 23 is such that the angles of the connecting portions of the three shielding plates 25A, 25B, and 25C open in a single plane as shown in FIG. What is necessary is just to set the position of the hinge 27 to the substantially central part of the seismic isolation structure operation track W in the bending and stretching posture formed in one plane by the first to third shielding plates 25A, 25B, and 25C.

  Further, the angles of the connecting portions of the first to third shielding plates 25A, 25B, and 25C are buckled, and the respective surfaces of the shielding plates 25A, 25B, and 25C are in close contact with each other as shown in FIG. 9B. The hinge 27 is set at the upper end of the seismic isolation structure operating track W or outside thereof in a bent and stretched posture in which a mountain shape close to a close contact is formed by the three shielding plates 25A, 25B, and 25C. do it.

  Then, when the ground is displaced due to the occurrence of the earthquake, for example, when the other structure 23 shown in FIG. 5 moves to the right side, the mutual distance between the other structure 23 and the seismic isolation structure 22 side is increased. Since the width is reduced, the first to third shielding plates 25A, 25B, 25C opened in one plane are bent and stretched, and in the maximum state in the range of the seismic isolation structure operating track W shown in FIG. 9B. The respective surfaces of the shielding plates 25A, 25B, and 25C come close to each other.

  The other tension holding mechanism 40 operates only when the distance between the seismic isolation structure 22 and the other structure 23 is widened from the state shown in FIG. 5 or FIG. In some cases, the position of the fixing member 41 is attracted to the floating column 42 by the six magnets 48 shown in FIG. 5, 6 or 7, and the position of the fixing member 41 is shown in FIG. What is necessary is just to set to the approximate center part of the object operation | movement track | orbit W. Further, when the earthquake occurs, the distance between the fixing member 41 and the floating support 42 is widened, and the position of the fixing member 41 is activated as shown in FIG. What is necessary is just to set to the lower end part of the track | orbit W, or the outer side (illustration outside).

  By setting in this way, the range in which the hinge 27 part or the fixing member 41 part on the seismic isolation structure 22 side can be displaced is within the seismic isolation structure operation track W with respect to the normal state shown in FIG. The first to third shielding plates 25A, 25B, 25C can bend or extend, or the wire rods 43A, 43B of the tension holding mechanism 40 can be taken in and out.

  Then, when the ground is displaced due to the occurrence of the earthquake, for example, when the other structure 23 shown in FIG. 5 moves to the left side, the mutual distance between the other structure 23 and the seismic isolation structure 22 side is increased. Since the width is widened, the floating support 42 that has been attracted to the fixing member 41 by the six magnets 48 moves to the left against the magnetic force of the six magnets 48 and moves away from the fixing member 41. 43B is pulled out from the floating column 42 against the tension by the weight 46, and the weight 46 is lifted as shown in FIG. Since the wire rods 43A and 43B resulting from the widening operation are held at a constant tension by the weight 46, the wire 43A and 43B stretched between the fixed member 41 and the floating column 42 cannot pass. It becomes possible. That is, it is possible to block people from entering the danger area.

  As is clear from the above, according to the second embodiment, the shielding unit 24 part and the tension holding mechanism 40 part are used in combination. When the distance between the seismic isolation structure 22 and the other structure 23 shown in FIG. 2 is reduced, the displacement is absorbed by the bending operation of the shielding plates 25A, 25B, and 25C of the shielding unit 24, and the distance is widened. In such a case, the amount of displacement can be absorbed by the stretching of the wire rods 43A and 43B of the tension holding mechanism 40.

  That is, a person can be blocked regardless of whether the distance between the seismic isolation structure 22 and the other structure 23 is narrow or wide, and humans can also be used when the operating trajectory of the seismic isolation structure 22 is wider. It is possible to provide an entry blocking device that can block the entry of the vehicle. Further, if the shielding plates 25A, 25B, 25C of the shielding unit 24 are set in a flat state in a normal state and bend and extend only when contracted, the foundation 31 shown in FIG. Since it does not interfere with members laid on the ground such as the standing member 32, the gap between the lower end of each of the shielding plates 25A, 25B, and 25C and the ground is minimized to prevent an infant or the like from entering. be able to.

  Moreover, since the component which concerns on this invention can use what is marketed as a normal building material etc., for example, by using a commercial item about a shielding member, material shape, such as plate shape, a wire-mesh shape, or a fence shape, is used. At the same time, the appearance of colors, patterns, etc., can be freely selected according to the customer's preference, and the appearance can be adjusted. Furthermore, since each structure is simple, an apparatus can be comprised cheaply.

  In the above embodiment, the other structure adjacent to the seismic isolation structure has been described on the assumption that it is a fixed structure that does not include a seismic isolation device. The invention can be implemented.

It is the side view which carried out the cross section of a part showing the whole approach interception device concerning a 1st embodiment. It is AA arrow sectional drawing of FIG. 1 which concerns on 1st Embodiment. It is a schematic diagram which shows the action | operation of the interruption | blocking unit which concerns on 1st Embodiment, Comprising: (a) is when displacement amount is the maximum, (b) is when intermediate displacement amount, (c) is the displacement amount being minimum. Show the case. It is a schematic diagram which shows the action | operation of the interruption | blocking unit in the other example which concerns on 1st Embodiment, Comprising: (a) is when displacement amount is the maximum, (b) is the case of intermediate displacement amount, (c) is displacement The case where the amount is minimum is shown. It is the side view which carried out the cross section of a part which shows the whole approach blocking apparatus which concerns on 2nd Embodiment. It is an enlarged view of the BB arrow section of Drawing 5 concerning a 2nd embodiment. It is a longitudinal cross-sectional view which shows the case where the mutual space | interval of the floating support | pillar and fixing member of the approach interruption | blocking apparatus which concerns on 2nd Embodiment is the minimum. It is a longitudinal cross-sectional view which shows the case where the mutual space | interval of the floating support | pillar and fixing member which concern on 2nd Embodiment is the largest. It is a schematic diagram which shows the action | operation of the interruption | blocking unit and tension | tensile_strength holding | maintenance mechanism which concerns on 2nd Embodiment, Comprising: (a) is the case of the normal time when the amount of operation | movement of the interruption | blocking unit is the maximum and the action | operation amount of a tension | tensile_strength holding mechanism is the minimum. , (B) shows the case where the operation amount of the breaking unit is the minimum and the operation amount of the tension holding mechanism is the smallest, and (c) shows the case where the operation amount of the breaking unit is the maximum and the operation amount of the tension holding mechanism is the maximum. .

Explanation of symbols

[Codes according to the first embodiment]
DESCRIPTION OF SYMBOLS 1 Intrusion blocker 2 Seismic isolation structure 3 Other structures 4 Shielding unit 5A, 5B, 5C Shielding plate 6,7,8 Hinge 9 Mounting member 11 Foundation 14 Base [Code | symbol concerning 2nd Embodiment]
21 entrance blocking device 22 seismic isolation structure 23 other structure 24 shielding unit 25A, 25B, 25C shielding plate 26, 27, 28 hinge 31 foundation 34 foundation 40 tension holding mechanism 41 fixing member 41c, 41d, 42c, 42d wire hole 42 idle props 43A, 43B wire rods 44A, 44B guide wheels 46 weight 48 magnets

Claims (3)

An entry blocking device that blocks a gap formed between a seismic isolation structure equipped with a seismic isolation device and another structure adjacent to the seismic isolation structure, thereby blocking human entry. ,
A shielding unit having a plurality of shielding members and a first connecting member formed by connecting the plurality of shielding members so as to be freely stretchable;
A second connecting member that connects the shielding member that is located closest to the seismic isolation structure among the shielding members constituting the shielding unit and the seismic isolation structure;
A shielding member that is positioned on the most other side of the shielding member that constitutes the shielding unit, and a third coupling member that flexibly couples the other structure; and
The displacement between the seismic isolation structure and other structures due to the occurrence of an earthquake is absorbed through the first to third connecting members, and the most seismic isolation structure side of the shielding members constituting the shielding unit or Either one of the other structure side is provided with a free-moving support column, and the free-supporting column and the shielding member are connected to each other via a connecting member so as to be bent and extended. In this structure, a fixing member having a length in the vertical direction is fixed, and one or a plurality of wire rods are arranged in the horizontal direction between the floating strut and the fixing member. Either one of the fixing members is provided with a tension holding mechanism that holds a constant tension so that the wire is always horizontal even if the distance between the floating support column and the fixing member is displaced due to the occurrence of an earthquake. An approach blocking device characterized by that. The fixing member is fixed to the seismic isolation structure, the floating strut is formed in a hollow shape, and an opening corresponding to the number of the wires is formed in the side plate portion constituting the floating strut,
One end of the wire rod is fixed to the fixing member, the middle portion is inserted through the opening, and the other end is fixed to a weight disposed in the floating column.
2. The wire rod is always horizontal even if the distance between the floating column and the fixing member is displaced due to the occurrence of an earthquake by the tension holding mechanism composed of the floating column, the wire and the weight. Ingress blocking device. The approach blocking apparatus according to claim 2 , wherein a guide wheel that guides a midway portion of the wire inserted through the opening is provided inside a side plate that forms the floating support column .