JP6383828B1 - Fall prevention device - Google Patents

Abstract

An overturn prevention device is provided that includes an angle regulating portion that can be easily attached to an appropriate inclination angle and can be easily attached and detached as desired.
In the fall prevention device, the damper 10 is installed with the axis inclined between the upper surface of the furniture F and the ceiling C, and a first base portion 30A is connected to a joint portion 15 at one end of the damper 10 so that the furniture F The second base portion 30B contacts the upper surface, is connected to the joint portion 15 at the other end of the damper 10 and contacts the ceiling C, and the angle restricting portion 70 of the first base portion 30A restricts the inclination angle of the damper 10. 30 A of 1st base parts have the insertion hole 49 in the side in which the damper 10 inclines from the joint part 15 of the damper 10, and the angle control part 70 is inserted in the joint part 15 side of the insertion hole 49, and protrudes in the joint part 15 side. A first insertion piece 72 having a claw portion 74 to be engaged with the insertion hole 49, and a second insertion inserted at a distance from the joint portion 15 of the insertion hole 49 with a predetermined distance from the first insertion piece 72. And a piece 77.
[Selection] Figure 1

Description

  The present invention relates to a fall prevention device.

  Patent Document 1 discloses a conventional fall prevention device. This overturn prevention device includes a damper and a pair of base portions. The damper is attached between the upper surface of the furniture installed on the floor and the ceiling. The pair of base portions pivotally support both end portions of the damper so as to be rotatable around a rotation axis. One base part contacts the upper surface of the furniture, and the other base part contacts the ceiling. In addition, this overturn prevention device has a jig (angle restriction part) for setting the inclination angle of the damper to an optimum angle.

  This fall prevention device is placed with one base portion in contact with the upper surface of the furniture with the damper upright. Then, the jig is placed on the upper surface of the furniture in accordance with the base portion that is in contact with the upper surface of the furniture. Thereafter, the damper is tilted according to the jig so that the damper is at an optimum angle, and the other base portion is brought into contact with the ceiling. Thereafter, the jig is removed from the upper surface of the furniture.

  In this way, when the furniture is tilted in a direction parallel to the rotational direction of the damper due to an earthquake or the like, the anti-tip device attached between the upper surface of the furniture and the ceiling has a damper for each base portion. It is possible to maintain a state in which each base portion is in contact with the upper surface of the furniture and the ceiling by rotating around the rotation axis. Therefore, this fall prevention apparatus can make the damping force of a damper act on furniture, can suppress the inclination of furniture, and can prevent the fall of furniture.

Japanese Patent Laying-Open No. 2015-6330

  However, since the overturn prevention device of Patent Document 1 is only provided with a jig, the position of the jig relative to the base portion may be shifted. In other words, it is difficult to mount the fall prevention device between the upper surface of the furniture and the ceiling with an appropriate inclination angle.

  The present invention has been made in view of the above-described conventional situation, and when attaching the fall prevention device, the damper can be easily set to an appropriate inclination angle, and can be easily attached and detached as desired. Providing an overturn prevention device provided with an angle restricting portion is an issue to be solved.

  The fall prevention device of the present invention includes a damper, a first base portion, a second base portion, and an angle restricting portion. The damper is attached in a state where the axis is inclined between the upper surface of the article installed on the installation surface and the ceiling. The first base portion has a first connection portion that rotatably connects one end portion of the damper around the rotation axis, and abuts on the upper surface of the article. The second base portion has a second connecting portion that rotatably connects the other end portion of the damper around the rotation axis, and abuts the ceiling. The angle restricting portion is attached to the first base portion and restricts the inclination angle of the damper. The first base portion has an insertion hole formed on a side where the damper is inclined with respect to the first coupling portion, and the angle regulating portion is a first insertion piece inserted on the coupling portion side of the insertion hole. And a second insertion piece provided at a predetermined interval with respect to the first insertion piece and inserted on the side away from the first coupling portion of the insertion hole. A claw portion that protrudes toward the connecting portion and engages with the insertion hole is provided.

  In this fall prevention device, the angle restricting portion attached to the first base portion placed on the upper surface of the article restricts the inclination angle of the damper. As described above, the fall prevention device can tilt the damper to an appropriate tilt angle and maintain the tilt angle if the first base portion to which the angle regulating portion is attached is placed on the upper surface of the article. Thus, the fall prevention device can be appropriately attached between the top surface of the article and the ceiling only by bringing the second base portion into contact with the ceiling.

  Moreover, this fall prevention apparatus inserts the 1st insertion piece and 2nd insertion piece of an angle control part in the insertion hole of a 1st base part, and latches the nail | claw part of a 1st insertion piece to an insertion hole. Since the predetermined interval is provided between the first insertion piece and the second insertion piece, when the claw portion of the first insertion piece is inserted into the insertion hole, the first insertion piece becomes the second insertion piece. It is inserted into the insertion hole while being bent in the approaching direction. For this reason, this fall prevention device can easily attach the angle restricting portion to the first base portion.

  The insertion hole is formed on the side where the damper is inclined, and the angle restricting portion has the first insertion piece inserted into the insertion hole on the first connecting portion side. That is, the claw portion is locked in the insertion hole on the first connecting portion side. Thus, after the angle restricting portion is attached to the first base portion, for example, when the damper abuts on the angle restricting portion and the angle restricting portion is pushed away from the first connecting portion by the damper, the insertion hole is engaged. The stopped claw portion can prevent the angle restricting portion from being unintentionally detached from the first base portion. On the other hand, when removing the angle restricting portion from the first base portion, the angle restricting portion can be easily removed by inclining the angle restricting portion toward the first connecting portion.

  Therefore, the fall prevention device of the present invention can easily make the fall prevention device at an appropriate inclination angle, and can easily attach and detach the angle restricting portion as desired.

  The 1st base part of the fall prevention device of the present invention may have a wall part. The wall portion may be provided with a locking portion depending from the opening edge of the insertion hole and locked by the claw portion. In this case, the fall prevention device can guide the first insertion piece and the second insertion piece by the wall portion. Thereby, this fall prevention device can regulate the direction of the angle regulation part with respect to the 1st base part to a predetermined direction. Moreover, this fall prevention apparatus can latch the nail | claw part of a 1st insertion piece to the latching | locking part provided in the wall part. Thereby, this fall prevention apparatus can change easily the position and shape of a latching | locking part with a nail | claw part of a 1st insertion piece as desired.

  The second insertion piece of the fall prevention device of the present invention has an inclined surface inclined in a direction approaching the first insertion piece toward the tip at the tip in the direction opposite to the protruding direction of the claw of the first insertion piece. Can be provided. In this case, when the second insertion piece is inserted into the insertion hole of the first base portion, the fall prevention device can favorably guide the second insertion piece to the insertion hole by the inclined surface of the second insertion piece. Thereby, this fall prevention device can attach an angle control part to a 1st base part easily.

It is a side view which shows the state which attached the fall prevention apparatus of embodiment between the upper surface of furniture, and the ceiling. It is a front view which shows the state which attached the fall prevention apparatus of embodiment between the upper surface of furniture, and the ceiling. It is a fragmentary sectional view showing the damper and the 1st base part of the fall prevention device of an embodiment. It is a disassembled perspective view which shows the damper and 1st base part of embodiment. It is a fragmentary sectional view showing the damper, the 1st base part, and the angle regulation part of the fall prevention device of an embodiment.

  An embodiment embodying the overturn prevention device of the present invention will be described with reference to the drawings.

<Embodiment>
As shown in FIG. 1, at least one or more fall prevention devices of the embodiment are attached between the upper surface of the furniture F and the ceiling C. The furniture F is installed on the floor surface with the back surface facing a wall surface W extending vertically from a floor surface (not shown). The furniture F has a rectangular parallelepiped shape, and has a door, a drawer, etc. (not shown) on the front (right side in FIG. 1), and can store clothes, accessories, and the like inside. The furniture F has a rectangular shape in which the horizontal cross-sectional shape is long in the left-right direction (the depth direction in FIG. 1). When the fall prevention device is not attached, the furniture F may be tilted forward (rightward in FIG. 1) due to shaking such as an earthquake.

  As shown in FIGS. 1 and 2, the overturn prevention device includes a damper 10, a pair of base portions 30 </ b> A and 30 </ b> B, and an angle restricting portion 70.

  The damper 10 has a cylinder 11, a rod guide (not shown), a piston (not shown), a rod 13, and two joint portions 15 provided at both ends. The cylinder 11 has a bottomed cylindrical shape. The rod guide seals the opening of the cylinder 11. The piston is slidably inserted into the cylinder 11. The rod 13 has a base end connected to the piston. Further, the rod 13 is inserted through the rod guide, and the tip side protrudes to the outside of the cylinder 11. The cylinder 11 encloses hydraulic oil and compressed gas. As shown in FIGS. 1 to 3, each joint portion 15 is formed by bending a flat metal fitting. Each joint portion 15 is connected to the bottom of the cylinder 11 and the tip of the rod 13. Each joint portion 15 is formed with a through hole 15A penetrating in a direction perpendicular to the axis of the damper 10 (see FIG. 3).

  The damper 10 is a pressure damper in which the damping force generated during the contraction operation is larger than the damping force generated during the extension operation. Here, the extension operation of the damper 10 means an operation in which the length of the rod 13 protruding from the cylinder 11 (the entire length of the damper 10) becomes longer. In addition, the contraction operation of the damper 10 means an operation in which the length of the rod 13 protruding from the cylinder 11 (the entire length of the damper 10) is shortened. Further, the expansion force of the compressed gas sealed in the cylinder 11 acts on the damper 10 in the extending direction. That is, the damper 10 generates a biasing force in the extending direction.

  Since the mechanism for generating the damping force of the damper 10 has a well-known structure, the illustration is omitted. The cylinder 11 is partitioned into a rod-side pressure chamber in which the base end portion of the rod 13 is housed and an anti-rod-side pressure chamber by a piston inside. The piston is formed with an orifice which is a throttle valve for communicating between the two pressure chambers. The orifice functions as a damping force generator that generates a damping force by applying resistance to the flow of hydraulic oil between the rod-side pressure chamber and the non-rod-side pressure chamber accompanying the expansion / contraction operation of the damper 10. The piston is formed with a communication passage that communicates between the pressure chambers via a check valve. The check valve allows the flow of hydraulic oil from the rod side pressure chamber to the anti rod side pressure chamber, and prevents the reverse flow. For this reason, when the damper 10 is extended, the flow path of the hydraulic oil from the rod-side pressure chamber to the non-rod-side pressure chamber is a path between the orifice and the communication path. On the other hand, during the contraction operation of the damper 10, the flow path of the hydraulic oil from the non-rod side pressure chamber to the rod side pressure chamber is only the orifice. For this reason, the damping force generated during the extension operation of the damper 10 is smaller than the damping force generated during the contraction operation.

  As shown in FIGS. 1 and 2, the pair of base portions 30 </ b> A and 30 </ b> B is a first base that is one end portion of the damper 10 and that connects a joint portion 15 that is a first connecting portion connected to the bottom of the cylinder 11. It is a part 30 </ b> A, which is the second base part 30 </ b> B, which is the other end part of the damper 10 and is connected to the joint part 15, which is a second connecting part connected to the tip part of the rod 13. The first base portion 30A is placed in contact with the upper surface of the furniture F, and the second base portion 30B is in contact with the ceiling C. The first base portion 30A and the second base portion 30B have the same form and structure. As shown in FIGS. 1 to 4, each of the base portions 30 </ b> A and 30 </ b> B includes a base portion main body 31, a bolt 45 and a nut 47 that are rotating shaft members, a bush 35, and a non-slip portion 37.

  In a plan view when the first base portion 30A is viewed from above in a state of being placed in contact with the upper surface of the furniture F, the base portion main body 31 has a rectangular outer shape (hereinafter, the base portion main body 31 in the plan view). The direction in which the long side extends in the outer shape is referred to as “long side direction”, and the direction in which the short side extends is referred to as “short side direction”. Further, in a side view of the first base portion 30 </ b> A viewed in the short side direction in a state in which the first base portion 30 </ b> A is placed in contact with the upper surface of the furniture F, the lower end edge of the base body 31 is linearly parallel to the upper surface of the furniture F The upper end edge has an arcuate outer shape that swells upward from both sides of the lower end edge (see FIG. 1). In addition, the base body 31 has a substantially trapezoidal outer shape in which the upper edge is shorter than the lower edge when the first base 30A is viewed in the long side direction while being placed in contact with the upper surface of the furniture F. (See FIGS. 2 and 3).

  In the first base portion 30A in a state of being placed in contact with the upper surface of the furniture F, the base portion main body 31 has a long side direction (the left-right direction in FIG. 1 and the depth direction in FIGS. 2 and 3) on the upper surface. An elongated groove 41 is formed. The groove portion 41 has a bottom surface 41A extending on a horizontal plane, and an inner wall surface 41B rising substantially vertically on both sides of the bottom surface 41A. The bottom surface 41 </ b> A of the groove portion 41 extends substantially at the center in the vertical direction of the base portion main body 31. Further, the bottom surface 41A of the groove portion 41 is formed to have a constant width except for a portion where a pair of convex portions 43, 43 described later is formed.

  As shown in FIG. 4, the groove portion 41 is formed with a pair of convex portions 43 and 43 protruding from the bottom surface 41 </ b> A of the groove portion 41 and the inner wall surfaces 41 </ b> B and 41 </ b> B at the center in the long side direction. As shown in FIGS. 2 and 3, a space in which the joint portion 15 of the damper 10 and a bush 35 described later are fitted is formed between the convex portions 43 and 43. This space communicates with the groove 41. The distance between the inner wall surfaces 43A, 43A of the pair of convex portions 43, 43 (the length in the short side direction of the space) is slightly larger than the length of the bush 35 described later. Further, the pair of convex portions 43, 43 has an insertion hole 43B through which a shaft portion 45B of a bolt 45 (described later) is inserted in the upper center in the short side direction.

  As shown in FIG. 4, the groove portion 41 is formed with an insertion hole 49 penetrating through the bottom surface 41 </ b> A. The insertion hole 49 is formed at a predetermined distance from the convex portion 43. The predetermined distance between the insertion hole 49 and the convex portion 43 can be changed as desired. The insertion hole 49 has a rectangular shape extending in the width direction of the groove 41 in a plan view from above. In the insertion hole 49, a first insertion piece 72 and a second insertion piece 77 provided in an angle restricting portion 70 described later are inserted.

  As shown in FIGS. 1 and 5, the insertion hole 49 is provided with a pair of wall portions 49A. These wall portions 49A are suspended from the opening edge 49C of the insertion hole 49 (see FIG. 5). Specifically, these wall portions 49A are provided to hang down from a pair of opposite sides of the insertion hole 49 opposed in the long side direction. Further, a guide surface 49D is formed on the opposite sides of the wall portions 49A. Further, the opposite sides of the guide surfaces 49D of the wall portions 49A are formed so as to approach the guide surfaces 49D as they go downward from the opening edge 49C of the insertion hole 49. A first inclined surface 49B is formed at the opening edge 49C of the rectangular insertion hole 49 so as to spread upward (see FIG. 5). Further, a tip end surface 49E extending in the horizontal direction is formed at the lower end of the wall portion 49A.

  As shown in FIG. 4, in the first base portion 30 </ b> A in a state of being placed in contact with the upper surface of the furniture F, the base portion main body 31 is a central portion in the long side direction and on both sides of the groove portion 41. A recess 42 is formed. The recess 42 is open outward in the upward direction and the short side direction. Further, an insertion hole 43 </ b> B penetrating the convex portion 43 is opened in the side surface of the hollow portion 42. In addition, in the recess 42, a head 45A of a bolt 45 described later and a nut 47 screwed into the bolt 45 are arranged. Moreover, this hollow part 42 is formed so that it may expand in a long side direction as it goes upwards. Thereby, it is easy to fit the tool to the head 45A of the bolt 45 and the nut 47 from above.

  The base part main body 31 is a cavity as shown in FIGS. The base portion main body 31 opens downward in the first base portion 30A in a state where it is placed in contact with the upper surface of the furniture F.

  As shown in FIGS. 2 to 4, the rotating shaft member includes a bolt 45 inserted from one of the insertion holes 43 </ b> B of the base portion main body 31 and a nut 47 screwed into the shaft portion 45 </ b> B of the bolt 45. ing. The central axis of the bolt 45 becomes the rotation axis of the damper 10 in each base portion 30A, 30B. Further, a configuration may be adopted in which a cylindrical pin is used instead of the bolt 45 and a push nut is used instead of the nut 47.

  The bush 35 is substantially cylindrical as shown in FIG. The bush 35 is an elastic body. The length of the bush 35 is slightly smaller than the interval between the inner wall surfaces 43A and 43A of the pair of convex portions 43 and 43 provided on the base portion main body 31. The bush 35 is formed with a recess 35 </ b> A that goes around the outer peripheral surface of the central portion. The outer diameter of the recess 35 </ b> A is slightly smaller than the inner diameter of the through hole 15 </ b> A formed in the joint portion 15 of the damper 10. The outer diameter of the portion rising from both ends of the recess 35 </ b> A of the bush 35 is larger than the inner diameter of the through hole 15 </ b> A formed in the joint portion 15 of the damper 10. Moreover, the outer peripheral surface 35B of the both ends of the bush 35 is reduced in diameter outward. For this reason, the bush 35 is inserted into the through hole 15 </ b> A formed in the joint portion 15 of the damper 10 while being elastically deformed. The bush 35 is attached to the joint portion 15 of the damper 10 with the recess 35A fitted in the through hole 15A.

  The inner diameter of the bush 35 is slightly larger than the outer diameter of the shaft part 45 </ b> B of the bolt 45. Further, the bush 35 has inner peripheral surfaces 35C at both ends that are expanded in the outward direction. For this reason, the bush 35 is rotatable around the shaft portion 45 </ b> B of the bolt 45. Further, the bush 35 can be inclined with respect to the shaft portion 45B of the bolt 45 as long as the inner peripheral surfaces 35C of both end portions whose diameters have been expanded come into contact with the outer peripheral surface of the shaft portion 45B of the bolt 45. That is, the damper 10 having the bush 35 attached to the joint portion 15 is rotatable around the shaft portion 45B of the bolt 45 and is swingable in a direction crossing the rotation direction. Specifically, the rocking occurs due to the dimensional allowance and the diameter increase of the inner peripheral surface 35C. Furthermore, the elastic deformation of the bush 35 allows the damper 10 to swing more greatly in the direction crossing the rotational direction.

  As shown in FIGS. 1 to 4, the non-slip portion 37 has a similar (rectangular) outer shape that is slightly larger than the outer shape of the base portion main body 31. The anti-slip portion 37 is formed of rubber, flexible thermoplastic resin, or the like. Further, the anti-slip portion 37 is fitted into the lower end opening of the base portion main body 31 in the first base portion 30 </ b> A in a state of being placed in contact with the upper surface of the furniture F. Moreover, the anti-slip | skid part 37 is a substantially flat plate. Specifically, the anti-slip portion 37 is formed such that the upper surface of the furniture F or the surface that contacts the ceiling C is flat.

  Here, the assembly | attachment process of the damper 10 and each base part 30A, 30B is demonstrated.

  First, the bush 35 is fitted into each through hole 15 </ b> A formed in the two joint portions 15 provided at both ends of the damper 10, and the bush 35 is attached to the joint portion 15 of the damper 10. Next, one of the joint portions 15 of the damper 10 to which the bush 35 is attached is inserted between the pair of convex portions 43 and 43 formed on the base portion main body 31. Then, the shaft portion 45B of the bolt 45 is inserted into the insertion hole 43B and the bush 35 of the base portion main body 31, and the nut 47 is screwed into the shaft portion 45B of the bolt 45. In this way, the base portion main body 31 is connected to one of the joint portions 15 of the damper 10. Similarly, the base portion main body 31 is connected to the other joint portion 15 of the damper 10. In this state, as shown in FIG. 3, the head 45 </ b> A and the nut 47 (both ends of the rotating shaft member) of the bolt 45 are positioned symmetrically with respect to the central axis of the damper 10 in the recess 42 of the base body 31. Exposed. And the anti-slip | skid part 37 is fitted to each base part main body 31 connected with the both ends of the damper 10, and the assembly | attachment process of the damper 10 and each base part 30A, 30B is complete | finished.

  As shown in FIG. 3, the damper 10 and the base portions 30 </ b> A and 30 </ b> B assembled in this way have a bush 35 that can rotate with respect to the shaft portion 45 </ b> B of the bolt 45. For this reason, each base part 30A, 30B has the joint part 15, and has connected each of the both ends of the damper 10 so that rotation around the rotating shaft is possible. Further, the bush 35 has inner peripheral surfaces 35C at both end portions that are expanded in the outward direction. For this reason, the bush 35 can be tilted with respect to the rotation shaft in a range in which the inner peripheral surfaces 35C of both end portions of the bush 35 whose diameters are expanded are in contact with the outer peripheral surface of the shaft portion 45B of the bolt 45. Specifically, the rocking occurs due to the dimensional allowance and the diameter increase of the inner peripheral surface 35C. Further, the bush 35 is an elastic body, and the damper 10 can swing more greatly in the direction intersecting the rotation direction by being elastically deformed. As described above, the damper 10 connected to each of the base portions 30A and 30B can swing in a direction crossing the rotation direction.

  The angle restricting portion 70 is detachably attached to the first base portion 30A as shown in FIGS. For this reason, this fall prevention device can be prevented from becoming bulky by removing the angle restricting portion 70 from the first base portion 30A during packaging or the like. The angle restricting portion 70 is attached to the first base portion 30A, and is provided with a restricting portion 71 that extends substantially in the vertical direction, and a support portion 73 that is provided at the lower end of the restricting portion 71 and prevents the restricting portion 71 from tilting. The first insert piece 72 and the second insert piece 77 are inserted into the insertion hole 49 of the first base portion 30A and the angle restricting portion 70 is attached to the first base portion 30A.

  The restricting portion 71 has a columnar shape and extends in the vertical direction. In the state where the angle restricting portion 70 is attached to the first base portion 30A, the restricting portion 71 is formed such that the dimension in the long side direction of the base portion 30A is gradually increased from the upper end toward the lower end. The restricting portion 71 is provided with a receiving portion 71A at the upper end in a state where the angle restricting portion 70 is attached to the first base portion 30A placed in contact with the upper surface of the furniture F. The receiving portion 71A has a semi-annular shape. The receiving portion 71 </ b> A connects the semicircular annular central portion to the upper end portion of the restricting portion 71. In the state where the angle restricting portion 70 is attached to the first base portion 30A, the receiving portion 71A extends from the upper end portion of the restricting portion 71 toward the short side direction of the first base portion 30A. However, it extends toward the cylinder 11 of the damper 10. 71 A of receiving parts are arrange | positioned so that the inner side of a semicircle may surround a part of outer periphery of the cylinder 11 of the damper 10 in the state which attached the angle control part 70 to 30 A of 1st base parts.

  The restricting portion 71 places the damper 10 in a predetermined inclined posture by the cylinder 11 of the damper 10 coming into contact with the receiving portion 71A, and restricts the inclination angle so that the damper 10 does not fall down from the inclined posture. The inclination angle of the damper 10 is preferably 15 ° to 25 °. Since the receiving portion 71A does not hold the cylinder 11 firmly, the receiving portion 71A does not restrain the movement of the damper 10 that occurs when the furniture F tilts or shakes due to shaking such as an earthquake. That is, in this fall prevention device, when the furniture F is shaken or tilted due to a shake such as an earthquake, the damper 10 is rotatable around the rotation axis with respect to the base portions 30A and 30B. It can swing in a direction that intersects the direction.

  The support portion 73 has a flat plate shape and extends in one direction. In the support portion 73, the direction extending in a flat plate shape is substantially orthogonal to the direction in which the restriction portion 71 extends. The support portion 73 is connected to the restricting portion 71 with a flat plate-like one surface coming into contact with the lower end of the restricting portion 71. The direction in which the support portion 73 extends is the long side direction in the base portion 30A. When the first insertion piece 72 and the second insertion piece 77 described later are inserted into the insertion hole 49 of the first base portion 30A, the support portion 73 is placed on the bottom surface 41A of the groove portion 41 formed in the base portion main body 31. The surface of the contact.

  As shown in FIG. 5, the first insertion piece 72 and the second insertion piece 77 each have a flat plate shape. The second insertion piece 77 is provided with a predetermined distance from the first insertion piece 72 and hangs down from the other surface of the support portion 73. The first insertion piece 72 and the second insertion piece 77 have a flat plate thickness direction oriented in a direction in which the support portion 73 extends in one direction. In addition, the first insertion piece 72 and the second insertion piece 77 are located on the damper 10 side in a state in which the angle restricting portion 70 is attached to the first base portion 30 </ b> A, and the second insertion piece 77. Is disposed at a position farther from the damper 10 than the first insertion piece 72. And the 2nd insertion piece 77 is located in the damper 10 side slightly from the center of the support part 73 extended in one direction. Further, the base end of the first insertion piece 72 with respect to the dimension between the pair of convex portions 43 of the first base portion 30A and the insertion hole 49 in a state where the angle restricting portion 70 is attached to the first base portion 30A. From the base end of the second insertion piece 77 to the other end of the support portion 73 extending in the other direction (right direction in FIG. 5) from the base end of the support portion 73 extending in one direction (left direction in FIG. 5) is small. Is large (see FIG. 5).

  Further, a claw portion 74 is provided at the distal end portion of the first insertion piece 72 that hangs down from the other surface of the support portion 73. Specifically, the claw portion 74 is provided over the entire flat tip end edge of the first insertion piece 72 with the angle restricting portion 70 attached to the first base portion 30 </ b> A. It protrudes toward the joint part 15 side. In the claw portion 74, a flat surface 78 that is substantially parallel to the support portion 73 is formed on the flat base end side of the first insertion piece 72. Further, the claw portion 74 is formed with a second inclined surface 75 that is inclined so as to approach the flat surface 78 toward the damper 10 side. The claw portion 74 is not provided on the second insertion piece 77. In addition, a third inclined surface 76 that is an inclined surface is formed at the tip of the second insertion piece 77 depending from the other surface of the support portion 73. Specifically, the third inclined surface 76 is provided over the entire front end portion of the surface of the second insertion piece 77 opposite to the direction in which the claw portion 74 protrudes. Further, the third inclined surface 76 is inclined in a direction approaching the first insertion piece 72 toward the tip of the second insertion piece 77. Further, the predetermined interval provided between the first insertion piece 72 and the second insertion piece 77 is larger than the dimension in which the claw portion 74 protrudes from the first insertion piece 72 toward the damper 10.

  Next, an attachment method for attaching the angle restricting portion 70 thus formed to the first base portion 30A will be described.

  First, the semicircular receiving portion 71A of the restricting portion 71 surrounds a part of the outer periphery of the cylinder 11 of the damper 10, and the other surface of the support portion 73 faces the bottom surface 41A of the groove portion 41 of the first base portion 30A. Let Then, the first insertion piece 72 and the second insertion piece 77 are inserted into the insertion hole 49. At this time, the second inclined surface 75 of the claw portion 74 of the first insertion piece 72 and the third inclined surface 76 of the second insertion piece 77 abut on the first inclined surface 49B of the insertion hole 49, thereby causing the insertion hole 49. The first insertion piece 72 and the second insertion piece 77 are guided.

  When the first insertion piece 72 and the second insertion piece 77 are pushed into the insertion hole 49 in the direction in which the first insertion piece 72 and the second insertion piece 77 are inserted (downward in FIG. 5), the distal end portion of the first insertion piece 72 becomes the second insertion piece 77. Side (in the right direction in FIG. 5), the distance between the tip portions of the first insertion piece 72 and the second insertion piece 77 is reduced. The first insertion piece 72 and the second insertion piece are made while the tips of the claw portions 74 protruding from the first insertion piece 72 toward the damper 10 abut against the guide surface 49D of the wall portion 49A located on the damper 10 side. 77 is inserted into the insertion hole 49. That is, when the angle restricting portion 70 is inserted into the insertion hole 49, it is inserted into the first insertion piece 72 inserted into the joint hole 15 side of the insertion hole 49 and the side away from the joint hole 15 of the insertion hole 49. And a second insertion piece 77.

  When the position of the flat surface 78 of the claw portion 74 reaches below the position of the front end surface 49E of the wall portion 49A, the first insertion piece 72 that has been bent toward the second insertion piece 77 is restored to the position before being bent. Then, the flat surface 78 of the claw portion 74 faces (or abuts) the tip surface 49E. At this time, since the first insertion piece 72 and the second insertion piece 77 are arranged along the guide surfaces 49D of the pair of wall portions 49A, the angle restricting portion 70 tilts with respect to the first base portion 30A. Suppress. Thus, the first insertion piece 72 is locked by the distal end surface 49E of the insertion hole 49 and the claw portion 74. That is, the front end surface 49E of the wall portion 49A is a locking portion that the claw portion 74 locks. In addition, the 1st insertion piece 72 and the 2nd insertion piece 77 can be adjusted to desired bending ease by changing each plate | board thickness.

  Note that the dimension from the first insertion piece 72 to one end of the support part 73 extending in one direction is smaller than the dimension between the pair of convex portions 43 of the first base portion 30A and the insertion hole 49, and the second insertion The dimension from the piece 77 to the other end of the support part 73 extending in one direction is large. Thereby, even if it is going to reverse the direction of the support part 73 extended to one direction with respect to the 1st base part 30A and to attach the angle control part 70 to the 1st base part 30A, a pair of convex of the 1st base part 30A Since the dimension from the 2nd insertion piece 77 to the other end of the support part 73 extended to one direction with respect to the dimension between the part 43 and the insertion hole 49 is large, it cannot attach. As a result, the angle restricting portion 70 can be attached to the first base portion 30A in a predetermined direction.

  In this way, the angle restricting portion 70 attached to the first base portion 30A is configured such that, for example, when the receiving portion 71A is pushed away from the damper 10, the claw portion 74 of the first insertion piece 72 becomes the tip surface 49E of the wall portion 49A. Because it is locked to the first base portion 30A, it is difficult to come off from the first base portion 30A. On the other hand, when the receiving portion 71A is pushed in the direction approaching the damper 10, the second insertion piece 77 is not locked to the wall portion 49A, so that the angle restricting portion 70 is easily detached from the first base portion 30A. . In addition, by adjusting the dimension by which the nail | claw part 74 protrudes from the 1st insertion piece 72 to the damper 10 side, the ease in which the angle control part 70 remove | deviates from 30 A of 1st bases can be adjusted. In this case, the predetermined interval provided between the first insertion piece 72 and the second insertion piece 77 is also adjusted according to the size of the claw portion 74 protruding from the first insertion piece 72 toward the damper 10.

  Next, an attachment method for attaching the fall prevention device between the upper surface of the furniture F installed on the floor surface and the ceiling C with the rear surface facing the wall surface W will be described.

  First, the first insertion piece 72 and the second insertion piece 77 of the angle restricting portion 70 are inserted into the insertion hole 49 formed in the base portion main body 31 of the first base portion 30A, and the angle restricting portion is inserted into the first base portion 30A. 70 is attached.

  Next, the first base portion 30A to which the angle restricting portion 70 is attached is placed with the anti-slip portion 37 in contact with the upper surface of the furniture F on the wall surface W side. At this time, the angle restricting portion 70 is arranged on the front side of the furniture F from the damper 10. In addition, with the first base portion 30A placed on the upper surface of the furniture F, the shaft portion 45B (rotating shaft) of the bolt 45 of the first base portion 30A is in a direction in which the furniture F is inclined due to shaking such as an earthquake. It extends in the direction perpendicular to. That is, when the furniture F is tilted forward (rightward in FIG. 1) due to shaking such as an earthquake, the first base portion 30A can be kept in contact with the upper surface of the furniture F. The base portion 30A is placed on the upper surface of the furniture F.

  Next, the damper 10 of the fall prevention device is compressed. At this time, the fall prevention device compresses the damper 10 to such an extent that a gap is provided between the second base portion 30B and the ceiling C. Then, the damper 10 is inclined so that the cylinder 11 of the damper 10 contacts the receiving portion 71A of the angle restricting portion 70. In this state, the damper 10 sets the inclination angle to an appropriate angle between 15 ° and 25 ° with respect to the vertical direction. In other words, the insertion hole 49 is formed on the side where the damper 10 is inclined with respect to the joint portion 15 of the first base portion 30 when the damper 10 is attached with the axis line inclined between the upper surface of the furniture F and the ceiling C. Will be. Then, the second base portion 30B is arranged such that the shaft portion 45B (rotation shaft) of the bolt 45 of the second base portion 30B is parallel to the shaft portion 45B (rotation shaft) of the bolt 45 of the first base portion 30A. Correct the direction of. In this state, when the compression of the damper 10 is stopped, the damper 10 is extended by the urging force, and the second base portion 30B comes into contact with the ceiling C (see FIGS. 1 and 2). That is, the base portions 30A and 30B are in contact with the upper surface of the furniture F and the ceiling C, respectively. In this manner, the fall prevention device can attach the damper 10 between the upper surface of the furniture F installed on the installation surface and the ceiling C so that the expansion and contraction direction forms a predetermined angle with respect to the vertical direction. That is, the damper 10 is in a state in which the inclination angle is restricted by the angle restriction part 70 attached to the first base part 30A, and the axis is inclined between the upper surface of the furniture F installed on the installation surface and the ceiling C. Attached to. In addition, after completing the attaching operation, the angle restricting portion 70 may be removed from the first base portion 30A or may be left attached.

  In this way, this fall prevention device can incline the damper 10 at an appropriate inclination angle if the first base portion 30A to which the angle restricting portion 70 is attached is placed on the upper surface of the furniture F. The fall prevention device can be appropriately attached between the upper surface of the furniture F and the ceiling C only by maintaining the angle and bringing the second base portion 30B into contact with the ceiling C.

  In the fall prevention device attached between the upper surface of the furniture F and the ceiling C, the axis of the damper 10 extending from the ceiling C side to the upper surface side of the furniture F is inclined downward, and an earthquake or the like in a plan view viewed from above. The damper 10 is attached in a state in which the axis of the damper 10 extends in parallel with the direction in which the furniture F is tilted by the shaking (right direction in FIG. 1). For this reason, when the furniture F tilts forward (rightward in FIG. 1) due to shaking such as an earthquake and the upper surface of the furniture F approaches the ceiling C, the damper 10 reliably contracts and generates a damping force. Thereby, this fall prevention device can make the damping force which generate | occur | produced with the damper 10 act on the furniture F. FIG.

  As described above, in this overturn prevention device, the angle restricting portion 70 attached to the first base portion 30 </ b> A placed on the upper surface of the furniture F restricts the inclination angle of the damper 10. Thus, this fall prevention device can incline the damper 10 at an appropriate inclination angle if the first base portion 30A to which the angle restricting portion 70 is attached is placed on the upper surface of the furniture F. The fall prevention device can be appropriately attached between the upper surface of the furniture F and the ceiling C only by maintaining the angle and bringing the second base portion 30B into contact with the ceiling C.

  Further, this overturn prevention device inserts the first insertion piece 72 and the second insertion piece 77 of the angle restricting portion 70 into the insertion hole 49 of the first base portion 30A, and inserts the claw portion 74 of the first insertion piece 72. Locks into the hole 49. Since a predetermined interval is provided between the first insertion piece 72 and the second insertion piece 77, the first insertion piece 72 is inserted when the claw portion 74 of the first insertion piece 72 is inserted into the insertion hole 49. Is inserted into the insertion hole 49 while being bent in a direction approaching the second insertion piece 77. For this reason, this fall prevention device can easily attach the angle restricting portion 70 to the first base portion 30A.

  The insertion hole 49 is formed on the side where the damper 10 is inclined, and the angle restricting portion 70 has the first insertion piece 72 inserted into the insertion hole 49 on the joint portion 15 side. That is, the claw portion 74 is locked in the insertion hole 49 on the joint portion 15 side. Thus, after the angle restricting portion 70 is attached to the first base portion 30A, the damper 10 comes into contact with the angle restricting portion 70 and is inserted when the angle restricting portion 70 is pushed away from the joint portion 15 by the damper 10. The claw portions 74 locked in the holes 49 can prevent the angle restricting portion 70 from being unintentionally detached from the first base portion 30A. In contrast, when the angle restricting portion 70 is removed from the first base portion 30A, it can be easily removed by inclining the angle restricting portion 70 toward the joint portion 15 side.

  Therefore, this fall prevention device can make the fall prevention device easy to an appropriate inclination angle, and can easily attach and detach the angle restricting portion 70 as desired.

  In addition, the first base portion 30A of the fall prevention device has a wall portion 49A. The wall portion 49 </ b> A has a tip end surface 49 </ b> E that hangs down from the opening edge 49 </ b> C of the insertion hole 49 and that the claw portion 74 engages. For this reason, this fall prevention device can guide the 1st insertion piece 72 and the 2nd insertion piece 77 by wall part 49A. Thereby, this fall prevention device can regulate the direction of angle regulation part 70 to the 1st base part 30A to a predetermined direction. Moreover, this fall prevention device can latch the claw part 74 of the 1st insertion piece 72 to the front end surface 49E provided in wall part 49A. Thereby, this fall prevention apparatus can change easily the position and shape of the front end surface 49E with the nail | claw part 74 of the 1st insertion piece 72 as desired.

  In addition, the second insertion piece 77 of the overturn prevention device is arranged in a direction approaching the first insertion piece 72 toward the tip at the tip of the first insertion piece 72 in the direction opposite to the protruding direction of the claw 74. An inclined third inclined surface 76 is provided. For this reason, the fall prevention device inserts the second insertion piece 77 into the insertion hole 49 by the third inclined surface 76 of the second insertion piece 77 when the second insertion piece 77 is inserted into the insertion hole 49 of the first base portion 30A. Good guidance. Thereby, this fall prevention device can attach the angle control part 70 to 30 A of 1st bases easily.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the embodiment, the fall prevention device is attached to the furniture, but may be attached to an article such as a bookcase or a refrigerator that may fall over due to shaking such as an earthquake.
(2) In the embodiment, the fall prevention device is attached to the furniture placed on the floor with the back face facing the wall, but the furniture placed on the floor without being adjacent to the wall You may attach to.
(3) In the embodiment, each base portion is connected to both ends of the damper so as to be rotatable around the rotation axis and swingable in a direction crossing the rotation direction. It is not necessary to connect, and it is not necessary to connect so that rocking is possible.
(4) In the embodiment, a pressure-effective damper is used. However, a dual-effect damper may be used as long as it exhibits a predetermined damping force during a contracting operation.
(5) In the embodiment, a damper in which hydraulic oil and compressed gas are sealed in a cylinder is used. However, a liquid pressure damper in which another liquid is sealed is used as long as it generates a predetermined damping force during a contracting operation. Alternatively, other types of dampers may be used.
(6) In the embodiment, the compressed gas is sealed in the cylinder so that the expansion force of the compressed gas acts in the extension direction. However, the force acting in the extension direction may be generated by other methods such as a coil spring. . Further, it is not necessary to enclose compressed gas or the like and to apply force in the extending direction.
(7) The form of each base part is not limited to the form of the embodiment.
(8) In the embodiment, the claw portion is provided on the first insertion piece, and the claw portion is locked to the front end surface of the wall portion. For example, the penetration that penetrates the front end portion of the first insertion piece in the thickness direction A hole or a depression is provided, and a claw is provided on the wall. And you may latch this nail | claw part in the through-hole of a 1st insertion piece, or a hollow.

  C ... Ceiling, F ... Furniture (article), 10 ... Damper, 15A ... Joint part (first connecting part), 15A ... Joint part (second connecting part), 30A, 30B ... Base part (30A ... First base part 30B ... second base portion), 45 ... bolt (rotating shaft), 49 ... insertion hole, 49A ... wall portion, 49C ... opening edge, 51 ... connecting portion, 53 ... hanging portion, 70 ... angle regulating portion, 72 ... 1st insertion piece, 74 ... Claw part, 76 ... 3rd inclined surface (inclined surface), 77 ... 2nd insertion piece

Claims (3)

A damper attached in a state where the axis is inclined between the top surface of the article installed on the installation surface and the ceiling;
A first base part that has a first connection part that rotatably connects one end of the damper around a rotation axis; and a first base part that contacts the upper surface of the article;
A second connecting portion that rotatably connects the other end of the damper around a rotation axis, and a second base portion that contacts the ceiling;
An angle restricting portion that is attached to the first base portion and restricts an inclination angle of the damper;
With
The first base portion has an insertion hole formed on a side where the damper is inclined with respect to the first connecting portion,
The angle restricting portion is provided with a predetermined interval with respect to the first insertion piece inserted into the insertion hole on the first connecting portion side of the insertion hole, and A second insertion piece inserted on the side away from the first connecting portion,
The first insertion piece includes a claw portion that protrudes toward the first connection portion and engages with the insertion hole.   The fall prevention device according to claim 1, wherein the first base portion includes a wall portion that is suspended from an opening edge of the insertion hole and includes a locking portion that the claw portion locks. .   The second insertion piece has an inclined surface inclined in a direction approaching the first insertion piece toward the tip at the tip of the surface of the first insertion piece opposite to the protruding direction of the claw. The fall prevention device according to claim 1, wherein the fall prevention device is provided.

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