JP2018157875A - Overturning prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overturning prevention device that can be reliably attached between an article installed on an installation surface and a ceiling.SOLUTION: An overturning prevention device includes: a damper 10 that generates energizing force in an elongation direction; a first base part 30B provided to one end in the elongation direction of the damper, which has a first contact surface 37A formed with irregularities, and causes the first contact surface 37A to be brought into contact with a ceiling C; and a second base part 30A provided to the other end in the elongation direction of the damper 10, which has a second contact surface 37C formed into a plane surface, and causes the second contact surface 37C to be brought into contact with the top surface of furniture F installed on a floor surface.SELECTED DRAWING: 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 that expands and contracts to generate a damping force and a pair of base portions. The fall prevention device 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 this way, the fall prevention device attached between the upper surface of the furniture and the ceiling, when the furniture tilts forward due to an earthquake or the like, the damper rotates around the rotation axis with respect to each base part. Thus, the base portion can be maintained in contact with the upper surface of the furniture and the ceiling. Therefore, this fall prevention device can prevent the furniture from falling by suppressing the inclination of the furniture by the damping force of the damper.

Japanese Patent Laying-Open No. 2015-6330

  There is a case where a gypsum board having a travertine pattern in which a small depression is provided on the ceiling is used. For this reason, when the base part is brought into surface contact with the ceiling and brought into contact therewith, there is a possibility that the surface of the base part cannot be brought into contact with the ceiling due to the depression provided in the gypsum board. As a result, even if the base portion is brought into contact with the ceiling, there is a possibility that sufficient frictional force is not generated between the ceiling and the base portion, and the base portion may slide with respect to the ceiling.

  The present invention has been made in view of the above-described conventional situation, and it is an issue to be solved to provide a fall prevention device that can be securely attached between an article installed on an installation surface and a ceiling. Yes.

The fall prevention device of the present invention is
An urging portion that generates an urging force in the extending direction;
A first base portion that is provided at one end of the urging portion in the extending direction and has a first abutting surface on which irregularities are formed, and that causes the first abutting surface to abut against the ceiling, and extension of the urging portion A second base portion provided at the other end of the direction, having a second contact surface formed in a flat surface, and contacting the second contact surface with an upper surface of an article placed on the installation surface. It is characterized by.

  In this overturn prevention device, irregularities are formed on the first abutting surface of the first base portion that abuts against the ceiling. For this reason, in this fall prevention device, when the first contact surface comes into contact with a ceiling provided with unevenness, the unevenness of the first contact surface can be locked in the recess of the ceiling. That is, in this overturn prevention device, a frictional force is generated between the first contact surface of the first base portion and the ceiling, and the first base portion can be prevented from sliding with respect to the ceiling. In addition, the second contact surface of the second base portion that is in contact with the upper surface of the article is formed flat on the fall prevention device. For this reason, this fall prevention device can make the 2nd contact surface whole contact | abut on the upper surface of the articles | goods formed in the plane. That is, in this overturn prevention device, a frictional force is generated between the second contact surface of the second base portion and the upper surface of the article, and the second base portion is displaced from the upper surface of the article in contact with the second base portion. Can be suppressed.

  Therefore, according to the fall prevention device of the present invention, the fall prevention device can be reliably attached to an article installed on the installation surface.

  The first contact surface and the second contact surface of the fall prevention device of the present invention can be formed of a thermoplastic elastomer. In this case, since the first contact surface and the second contact surface of this fall prevention device are less likely to be deteriorated compared to rubber or the like, components such as oil stick out to the upper surface or ceiling of the article (transfer). It is difficult to do. Thereby, the fall prevention device can be stably installed for a long time between the upper surface of the article and the ceiling.

  The projections and depressions of the overturn prevention device of the present invention are formed by a plurality of conical or polygonal cone-shaped protrusions whose tips are narrowed toward the ceiling in a state where the first contact surface is disposed toward the ceiling. Can be done. In this case, in this overturn prevention device, the tip of the protruding portion can easily enter the recess provided in the ceiling. For this reason, in this fall prevention device, a frictional force is generated between the first contact surface of the first base portion and the ceiling, and the first base portion can be better suppressed from slipping with respect to the ceiling.

  In the fall prevention device of the present invention, the article may be installed adjacent to the wall surface, and the second base portion may have a detachable double-sided tape attached to the wall surface side of the second contact surface. In this case, in this overturn prevention device, the second contact surface and the upper surface of the article are adhered by the double-sided tape on the second contact surface. For this reason, even if it is a case where a 1st contact surface is separated from the ceiling, it can suppress that the fall prevention apparatus installed in the upper surface of articles | goods remove | deviates from the upper surface of articles | goods. Moreover, since this double-sided tape can be re-peeled, the mark stuck on the upper surface of the article hardly remains.

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 2nd base part of the fall prevention device of an embodiment. It is a perspective view which shows the damper and 2nd base part of embodiment. It is a perspective view which shows the state which looked at the fall prevention apparatus of embodiment from diagonally forward upper side. It is a side view which expands and shows the state where the 1st contact surface of the 1st base part of the fall prevention device of an embodiment contacted the ceiling.

  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 that is an urging portion and a pair of base portions 30 </ b> A and 30 </ b> B.

  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 15 </ b> A penetrating in a direction orthogonal to the axis of the damper 10.

  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 are connected to a joint portion 15 connected to the bottom portion of the cylinder 11 which is the other end of the damper 10 in the extending direction. This is a first base portion 30B provided to be connected to a joint portion 15 which is a portion 30A and is connected to the tip end portion of the rod 13 which is one end of the damper 10 in the extending direction. The second base portion 30A is placed in contact with the upper surface of the furniture F installed on the floor surface, and the first base portion 30B is in contact with the ceiling C. The second base portion 30A and the first base portion 30B have substantially 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 second 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 second base portion 30 </ b> A viewed in the short side direction in a state where the second base portion 30 </ b> A is placed in contact with the upper surface of the furniture F, the lower end edge of the base main body 31 is linear with the upper surface of the furniture F being parallel. The upper end edge has an arcuate outer shape that swells upward from both sides of the lower end edge (see FIG. 1). Further, the base body 31 has a substantially trapezoidal outer shape whose upper end edge is shorter than the lower end edge in a side view of the second base portion 30A viewed in the long side direction in contact with the upper surface of the furniture F. (See FIGS. 2 and 3).

  In the second 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.

  The groove portion 41 is formed with a pair of convex portions 43 and 43 protruding from the bottom surface 41A of the groove portion 41 and the inner wall surfaces 41B and 41B at the center portion 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.

  In the second 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 formed with depressions 42 at the center portion in the long side direction and on both sides of the groove portion 41. Yes. 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 FIG. The base portion main body 31 opens downward in the second 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 5, the non-slip portion 37 is substantially flat and has a similar (rectangular) outer shape that is slightly larger than the outer shape of the base body 31. The anti-slip portion 37 is formed of a styrenic thermoplastic elastomer having flexibility. Here, the thermoplastic elastomer has a flexibility such as rubber, resilience, and a larger coefficient of friction than other synthetic resins, and can be molded in the same manner as other synthetic resins. It is. Further, the anti-slip portion 37 is fitted into the lower end opening of the base portion main body 31 in the second base portion 30 </ b> A in a state of being placed in contact with the upper surface of the furniture F. Further, in the first base portion 30 </ b> B arranged toward the ceiling C, the anti-slip portion 37 is fitted into the upper end opening of the base portion main body 31.

  The anti-slip portion 37 fitted in the opening of the base portion main body 31 of the first base portion 30B includes a first contact surface 37A that contacts the ceiling C. That is, the first contact surface 37A is formed of a thermoplastic elastomer. The first contact surface 37A is formed of a plurality of protrusions 37B. Specifically, as shown in FIG. 5, the protruding portion 37 </ b> B is formed with a thin tip toward the ceiling C in a state where the first contact surface 37 </ b> A of the first base portion 30 </ b> B is disposed toward the ceiling C. It has a quadrangular pyramid shape. The dimension of one side of the bottom of the quadrangular pyramid of the projecting portion 37B is approximately 2.5 mm to 5 mm, preferably 3 mm. In addition, in the state where the first contact surface 37A of the first base portion 30B is disposed toward the ceiling C, the vertical dimension of the quadrangular pyramid shape of the protruding portion 37B is approximately 0.5 mm to 1.5 mm. Preferably it is 0.8 mm. 37 A of 1st contact surfaces are formed in the some protrusion part 37B so that the mutual base of the some protrusion part 37B may adjoin the whole 37 A of 1st contact surfaces. In addition, in the first contact surface 37A, in a state where the first base portion 30B is arranged toward the ceiling C, the tip portion of the projecting portion 37B formed so that the tip is thin toward the ceiling C is a convex portion of the unevenness. There is a concave portion between the tips of adjacent projecting portions 37B. That is, the first contact surface 37A is unevenly formed by the plurality of protrusions 37B.

  Further, the anti-slip portion 37 fitted into the opening of the base portion main body 31 of the second base portion 30 </ b> A includes a second contact surface 37 </ b> C that contacts the furniture F. That is, the second contact surface 37C is formed of a thermoplastic elastomer. The second contact surface 37C is formed flat. A double-sided tape 37D is attached to the second contact surface 37C of the second base portion 30A. Specifically, the double-sided tape 37D is detachable and has a rectangular shape. The double-sided tape 37D has a second contact such that one of the two long sides of the rectangular shape is along a predetermined distance from one of the two short sides of the rectangular shape of the second contact surface 37C. It is stuck on the surface 37C. That is, the double-sided tape 37D is attached in the vicinity of one of the two rectangular short sides of the second contact surface 37C. Further, in the state before the fall prevention device is attached between the upper surface of the furniture F and the ceiling C, a film-like release sheet is attached to the entire surface of the double-sided tape 37D that contacts the upper surface of the furniture F. (Not shown). This release sheet is to prevent the double-sided tape 37D from being attached to an unintended portion, and to prevent dust, dust, etc. from adhering to the double-sided tape 37D.

  Next, an attachment method for attaching the fall prevention device to the furniture F installed on the floor surface with the back surface facing the wall surface W will be described.

  First, the release sheet attached to the double-sided tape 37D attached to the second contact surface 37C of the second base portion 30A is peeled off from the double-sided tape 37D. Then, the second contact surface 37C of the anti-slip portion 37 of the second base portion 30A and the double-sided tape 37D are placed in contact with the upper surface on the wall surface W side of the furniture F installed adjacent to the wall surface W ( (See FIG. 1). At this time, the side that is attached so that one of the two rectangular long sides of the double-sided tape 37D is along the rectangular short side of the second contact surface 37C is disposed on the wall W side. Then, the second base portion 30 </ b> A is placed on the upper surface of the furniture F. At this time, the shaft portion 45B (rotating shaft) of the bolt 45 of the second base portion 30A extends in a direction orthogonal to the direction in which the furniture F is inclined due to shaking such as an earthquake. That is, the second base portion 30 </ b> A can be kept in contact with the upper surface of the furniture F when the furniture F is tilted forward (rightward in FIG. 1) due to shaking such as an earthquake. 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 damper 10 is compressed to such an extent that a gap is provided between the first base portion 30B and the ceiling C. Then, the damper 10 is tilted. At this time, the inclination angle of the damper 10 is set between 15 ° and 25 ° with respect to the vertical direction. Then, the first base portion 30B is such that the shaft portion 45B (rotation shaft) of the bolt 45 of the first base portion 30B is parallel to the shaft portion 45B (rotation shaft) of the bolt 45 of the second 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 first contact surface 37A of the anti-slip portion 37 of the first base portion 30B comes into contact with the ceiling C (FIGS. 1, 2, and 6). reference.). That is, in each base part 30A, 30B, the first contact surface 37A and the second contact surface 37C contact the upper surface of the furniture F and the ceiling C, respectively. At this time, as shown in FIG. 6, the plurality of protrusions 37B of the first abutting surface 37A are formed in the dent 50 provided on the ceiling C (for example, a gypsum board or wallpaper) with the tip part formed thin. Get in. Specifically, the plurality of protrusions 37 </ b> B of the first contact surface 37 </ b> A enter the recess 50 provided in the ceiling C. That is, the protrusion 37B may be formed in a conical shape or the like as long as the tip of the tip is thinly formed in a state of being arranged toward the ceiling C. In this way, the fall prevention device can attach the damper 10 between the upper surface of the furniture F installed on the floor and the ceiling C so that the expansion and contraction direction forms a predetermined angle with respect to the vertical direction.

  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, irregularities are formed on the first contact surface 37A of the first base portion 30B that is in contact with the ceiling C. For this reason, in this fall prevention device, when the first contact surface 37A comes into contact with the ceiling C provided with the recess 50, the unevenness of the first contact surface 37A can be locked to the recess 50 in the ceiling C. . That is, in this fall prevention device, frictional force is generated between the first contact surface 37A of the first base portion 30B and the ceiling C, and the first base portion 30B is prevented from sliding laterally with respect to the ceiling C. Can do. In addition, in this fall prevention device, the second contact surface 37C of the second base portion 30A that is brought into contact with the upper surface of the furniture F is formed in a flat surface. For this reason, this fall prevention device can make the 2nd contact surface 37C whole contact | abut on the upper surface of the furniture F formed in the plane. That is, in this fall prevention device, a frictional force is generated between the second contact surface 37C of the second base portion 30A and the upper surface of the furniture F, and the second base is formed on the upper surface of the furniture F with which the second base portion 30A is in contact. It is possible to prevent the portion 30A from shifting in the lateral direction.

  Therefore, according to the fall prevention device of the present invention, the fall prevention device can be reliably attached between the furniture F and the ceiling C installed on the floor surface.

  In addition, the first contact surface 37A and the second contact surface 37C of the overturn prevention device are formed of a thermoplastic elastomer. For this reason, since the first contact surface 37A and the second contact surface 37C of the fall prevention device are less likely to be deteriorated than rubber or the like, they stick to the upper surface of the furniture F or the ceiling C, and oil or other components ooze out. However, it is difficult to move. Thereby, the fall prevention device can be stably installed for a long time between the upper surface of the furniture F and the ceiling C.

  Further, the projections and depressions of the fall prevention device are formed by a plurality of quadrangular pyramid-shaped projecting portions 37 </ b> B that are formed with thin tips toward the ceiling C in a state where the first contact surface 37 </ b> A is arranged toward the ceiling C. Is formed. For this reason, in this fall prevention device, the tip of the protrusion 37B can easily enter the recess 50 provided in the ceiling C. For this reason, in this fall prevention device, a frictional force is generated between the first contact surface 37A of the first base portion 30B and the ceiling C, and the first base portion 30B is better prevented from sliding with respect to the ceiling C. be able to.

  Further, in this fall prevention device, the furniture F is installed adjacent to the wall surface, and the second base portion 30A has a detachable double-sided tape 37D attached to the wall surface side of the second contact surface 37C. Yes. For this reason, in this fall prevention device, the second contact surface 37C and the upper surface of the furniture F are adhered by the double-sided tape 37D of the second contact surface 37C. For this reason, even if it is a case where 37 A of 1st contact surfaces have left | separated from the ceiling C, it can suppress that the fall prevention apparatus installed in the upper surface of the furniture F remove | deviates from the upper surface of the furniture F installed. Moreover, since this double-sided tape 37D can be re-peeled, the mark stuck on the upper surface of the furniture F hardly remains.

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 double-sided tape is arranged so that one side of the two long sides of the rectangular shape is provided with a predetermined distance from one side of the two short sides of the rectangular shape of the second contact surface. The double-sided tape may be attached to the center of the long side direction of the second contact surface, and the double-sided tape is applied to the entire second contact surface. You may wear it. Further, when the fall prevention device is installed between the upper surface of the furniture and the ceiling, a double-sided tape may be attached to a desired position on the second contact surface.
(9) In the embodiment, a plurality of protrusions are formed over the entire first contact surface, but a plurality of protrusions may be formed on a part of the first contact surface.
(10) In the embodiment, the first abutting surface is formed by a plurality of projecting portions having a quadrangular pyramid shape. However, the dimensions of one side of each of the projecting portions and the quadrangular pyramid shape are formed. The dimensions in the vertical direction may be different, and conical or polygonal projections may be mixed.
(11) In the embodiment, the anti-slip portion is formed of a styrene thermoplastic elastomer, but may be formed of other thermoplastic elastomers such as polyurethane and polyester. Further, the anti-slip portion may be formed of rubber or the like.

  C ... Ceiling, F ... Furniture (article), 10 ... Damper (biasing part), 30A ... Second base part, 30B ... First base part, 37A ... First contact surface, 37B ... Projection part, 37C ... First 2 contact surfaces, 37D ... double-sided tape, W ... wall surface

Claims (4)

An urging portion that generates an urging force in the extending direction;
A first base portion that is provided at one end of the urging portion in the extending direction and has a first abutting surface on which irregularities are formed, and that causes the first abutting surface to abut against the ceiling, and extension of the urging portion A second base portion that is provided at the other end of the direction and has a second contact surface formed in a plane, and makes the second contact surface contact an upper surface of an article installed on the installation surface;
A fall prevention device characterized by comprising:   2. The overturn prevention device according to claim 1, wherein the first contact surface and the second contact surface are formed of a thermoplastic elastomer.   The unevenness is formed by a plurality of cone-shaped or polygonal pyramid-shaped protrusions whose tips are narrowed toward the ceiling in a state where the first contact surface is disposed toward the ceiling. The fall prevention device according to claim 1 or 2. The article is installed next to the wall;
The said 2nd base part has the detachable double-sided tape stuck on the said wall surface side of the said 2nd contact surface, The any one of Claims 1 thru | or 3 characterized by the above-mentioned. Fall prevention device.

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