JP6397256B2 - Fall prevention device and article provided with the same - Google Patents

Description

  The present invention relates to a fall prevention device and an article provided with the same.

  Patent Document 1 shows a conventional fall prevention device. The fall prevention device includes a wall surface side locking tool connected to the wall surface, a furniture side locking tool connected to the furniture, and a fall prevention device main body interposed between the both locking tools. Yes. The fall prevention device body includes a damper and a length adjusting device provided in series with the damper. In this damper, the damping force generated during the extension operation is larger than the damping force generated during the contraction operation. This fall prevention device connects the furniture-side locking tool to the upper surface of the furniture installed near the wall surface standing upright from the floor, and connects the wall-side locking tool to the wall surface above the upper surface of the furniture. Thus, by mounting this fall prevention device between the furniture and the wall surface, when the furniture is tilted in a direction in which the upper part of the furniture is separated from the wall surface due to an earthquake or the like, the damping force of the damper acts and the wall surface side It is possible to prevent the furniture from falling down while attenuating the impact applied to the locking tool and the furniture side locking tool.

Japanese Unexamined Patent Application Publication No. 2011-161085

  However, since the fall prevention apparatus of patent document 1 connects a wall surface side fastener to a wall surface, it can be attached only to the furniture installed near the wall surface.

  The present invention has been made in view of the above-described conventional situation, and can be attached regardless of a place where an article such as furniture is installed, and an overturn prevention device that prevents the article from overturning due to an earthquake shake or the like, and Providing an article provided with it is a problem to be solved.

The fall prevention device of the present invention is a lower surface of an article installed on an installation surface supported by a support leg continuously extending downward from a central portion of the lower surface, and the edge portion in the direction in which the article is inclined and the installation It is characterized by comprising a damper that is attached to a surface and generates a damping force that attenuates the force with which the article tilts.

  In this fall prevention device, when an article is tilted due to an earthquake or the like, the damper installed between the article and the installation surface on the installation surface attenuates the tilting force of the article. It is suppressed and the fall of the article can be prevented. Thus, this overturn prevention device can be attached to an article that is not installed near a wall surface that stands vertically from the installation surface, and can prevent the article from falling over.

  Therefore, the fall prevention device can be attached regardless of the place where the article is installed, and the fall of the article due to an earthquake shake or the like can be prevented.

  Here, the articles include furniture, a bed in which a plurality of beds are connected in the vertical direction, a large television, a refrigerator, a bookcase, a showcase, a server rack, and the like that may fall over due to an earthquake shake. The installation surface includes not only the floor surface in the building but also the foundation surface on which articles are installed outside the building.

  In addition, the fall prevention device may include an elastic body that is attached between the article and the installation surface and applies an elastic force in a direction in which the article is restored from the tilted state. In this case, when the article is tilted, the elastic force of the elastic body is applied to the article so as to recover from the tilted state, so that the article can be prevented from falling. In particular, when the external force applied to the article does not reciprocate like a shake of an earthquake and is only in one direction, the article cannot be restored from the tilted state only with the damper, but the article is tilted by providing an elastic body. Since the elastic force of the elastic body is applied in the direction of restoring from the state, the article can be prevented from falling.

  Moreover, the one end part side of a damper may be connected to the edge part of the direction where the fall of articles | goods is assumed. In this case, the edge in the direction in which the article is assumed to fall is the portion that is most displaced when the article is tilted. For this reason, by connecting one end of the damper to this portion, the damping force of the damper can be efficiently applied to the force of tilting the article.

  The article of the present invention is characterized by comprising the above-described overturn prevention device and a support leg. In this case, when an article that is self-supporting on the installation leg is tilted due to an earthquake shake or the like, the damper of the fall prevention device attenuates the tilting force of the article, so that the tilt amount of the article is suppressed. The article can be prevented from falling.

It is a side view which shows the fall prevention apparatus attached between furniture and a floor surface. It is arrow XX sectional drawing of FIG. It is a side view which shows the state in which the furniture inclined forward. It is a side view which shows the state in which furniture leaned back. It is a horizontal sectional view which shows the attachment position of the fall prevention apparatus with respect to the furniture of another form.

  A first embodiment in which the fall prevention device 20 of the present invention is embodied will be described with reference to the drawings.

<Embodiment 1>
As shown in FIGS. 1 and 2, the overturn prevention device 20 according to the first embodiment is attached between the furniture 10 and the floor surface F, which is an installation surface, and prevents the furniture 10 from overturning due to an earthquake shake or the like. The furniture 10 includes a furniture body 11 and support legs 12 that are placed on the floor surface F and support the furniture body 11. The furniture body 11 has a rectangular parallelepiped shape, has a door, a drawer (not shown) on the front, a drawer, and the like, and can store clothes, accessories, and the like inside. The furniture body 11 has a rectangular shape in which the horizontal cross-sectional shape is long in the left-right direction (the depth direction in FIG. 1, the up-down direction in FIG. 2, and so on). The support leg 12 is also a rectangular parallelepiped shape, and the horizontal cross-sectional shape is smaller than the furniture main body 11, and is a rectangular shape long in the left-right direction. The support leg 12 extends continuously downward from the center of the lower surface 11A of the furniture body 11 so that the longitudinal direction of the support leg 12 and the longitudinal direction of the furniture body 11 are the same. For this reason, the lower surface 11 </ b> A of the furniture main body 11 extends outward from the peripheral edge of the upper end of the support leg 12. The furniture 10 is self-supporting in a state where the lower surface 12A of the support leg 12 is in contact with the floor surface F. The furniture 10 has a rectangular parallelepiped shape in which the support legs 12 are long in the left-right direction. Therefore, when the fall prevention device 20 is not attached, the furniture 10 is moved back and forth (the left-right direction in FIGS. 1 and 2; ) May fall over.

  As shown in FIG. 1, the fall prevention device 20 includes a first base portion 21 and a second base portion 22, and a damper 23 having one end connected to the first base portion 21 and the other end connected to the second base portion 22. And a spring 28 for applying an elastic force in the extension direction of the damper 23.

  The first base portion 21 includes a first base portion 21A that is in surface contact with the lower surface 11A of the furniture body 11, and a first connection portion 21B that connects one end of a damper 23 (a tip portion of a rod 23B described later). . The second base portion 22 includes a second base portion 22A that is in surface contact with the floor surface F and a second connection portion 22B that connects the other end of the damper 23 (a base end portion of a cylinder 23A described later).

  The damper 23 includes a cylinder 23A, a piston (not shown), a rod 23B, and a rod guide (not shown). The cylinder 23A has a bottomed cylindrical shape and is filled with hydraulic oil. The piston is slidably inserted into the cylinder 23A. The rod 23B is connected at its base end to the piston, is inserted through the rod guide, and the distal end protrudes to the outside of the cylinder 23A.

  The damper 23 has a single effect in which the damping force generated during the contracting operation is greater than the damping force generated during the extending operation. Here, the contraction operation of the damper 23 means an operation in which the protruding length of the rod 23B from the cylinder 23A and the entire length of the damper 23 become shorter. The extension operation of the damper 23 means an operation in which the protruding length of the rod 23B from the cylinder 23A and the entire length of the damper 23 become longer.

  Since the mechanism for generating the damping force of the damper 23 is a well-known structure, the description is omitted. The cylinder 23A is partitioned by a piston into a rod-side pressure chamber in which the base end of the rod 23B is housed and an anti-rod-side pressure chamber. 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 23. Further, 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. Therefore, in the damper 23, during the contracting operation, the flow path of the hydraulic oil from the non-rod side pressure chamber to the rod side pressure chamber is only the orifice. On the other hand, when the damper 23 is extended, the hydraulic oil flow path from the rod-side pressure chamber to the non-rod-side pressure chamber has two paths: an orifice and a communication path. For this reason, the damping force generated during the contraction operation of the damper 23 is greater than the damping force generated during the extension operation.

  The distal end portion of the rod 23B and the first connecting portion 21B are connected to each other by a first shaft portion 24 so as to be relatively rotatable. The base end portion of the cylinder 23 </ b> A and the second connecting portion 22 </ b> B are relatively rotatably connected by a second shaft portion 25 parallel to the first shaft portion 24.

  The spring 28 is provided at the tip of the rod 23B, and is provided on the outer peripheral surface of the first flange 26 having an annular plane that extends at right angles to the axis of the rod 23B and the cylinder 23A. Is sandwiched between the second flange portion 27 having an annular plane extending at a right angle to the second flange portion 27.

  As shown in FIG. 2, the fall prevention device 20 has an edge in a direction in which the furniture 10 installed on the floor F is inclined by an earthquake or the like, that is, the front edge 13 of the lower surface 11 </ b> A of the furniture body 11. And it is the rear edge part 14, Comprising: Three each are attached to the left-right direction at equal intervals. More specifically, four fall prevention devices 20 are attached to the periphery of the four corners of the lower surface 11 </ b> A of the furniture body 11, and one fall prevention device 20 is provided at each of the left and right center portions of the front edge portion 13 and the rear edge portion 14. It is attached.

  As shown in FIG. 1, each overturn prevention device 20 brings the first base portion 21 </ b> A of the first base portion 21 into contact with the lower surface 11 </ b> A of the furniture body 11, and the second base portion 22 </ b> A of the second base portion 22 makes the floor surface F Abut. At this time, the fall prevention device 20 can be attached in a state of being stretched between the lower surface 11 </ b> A of the furniture body 11 and the floor surface F by the elastic force of the spring 28. For this reason, each fall prevention device 20 is between the first base 21A of the first base portion 21 and the lower surface 11A of the furniture body 11 and between the second base 22A of the second base portion 22 and the floor surface F. Without being connected with an adhesive or the like, they can be attached without a gap. Further, the spring 28 has an elastic force in a direction to recover from the tilted state when the furniture 10 is tilted in a state where each of the fall prevention devices 20 is attached between the lower surface 11A of the furniture body 11 and the floor surface F. Will be granted.

  As shown in FIG. 3, the furniture 10 to which the fall prevention device 20 is attached in this way is furniture when the furniture 10 is swung back and forth due to an earthquake shake or the like, and the furniture 10 is tilted forward. The dampers 23 of the three fall prevention devices 20 attached between the front edge portion 13 of the lower surface 11A of the main body 11 and the floor surface F contract to generate a damping force. For this reason, the furniture 10 is attenuated in the forward tilting force by these dampers 23, and the forward tilt amount is suppressed. At this time, the three fall prevention devices 20 attached between the rear edge portion 14 of the lower surface 11A of the furniture body 11 and the floor surface F are extended by the elastic force of the spring 28, and the lower surface 11A of the furniture body 11 is restored. The state where the first base portion 21 </ b> A of the first base portion 21 is in contact with the rear edge portion 14 can be maintained.

  As shown in FIG. 4, when the furniture 10 swings in the front-rear direction and the furniture 10 tilts rearward due to an earthquake or the like, the rear edge portion 14 of the lower surface 11 </ b> A of the furniture body 11 and the floor F The dampers 23 of the three fall prevention devices 20 are contracted to generate a damping force. For this reason, the furniture 10 is damped in the backward tilting force by the dampers 23, and the backward tilt amount is suppressed. At this time, the three fall prevention devices 20 attached between the front edge 13 of the lower surface 11 </ b> A of the furniture body 11 and the floor surface F extend by the elastic force of the spring 28, and the lower surface 11 </ b> A of the furniture body 11. The state where the first base portion 21A of the first base portion 21 is in contact with the front edge portion 13 of the first base portion 21 can be maintained.

  Thus, the fall prevention device 20 is attached between the furniture 10 installed on the floor surface F and the floor surface F, and has a damper 23 that generates a damping force that attenuates the force that the furniture 10 tilts in the front-rear direction. Since it is provided, the amount of inclination of the furniture 10 in the front-rear direction can be suppressed, and the furniture 10 can be prevented from falling. Thus, the fall prevention device 20 can be attached to the furniture 10 that is not installed near the wall surface that rises vertically from the floor F, and the furniture 10 can be prevented from falling.

  Therefore, the fall prevention apparatus 20 of Embodiment 1 can be attached regardless of the place where the furniture 10 is installed, and can prevent the furniture 10 from falling due to an earthquake shake or the like.

  The fall prevention device 20 includes a spring 28 that is attached between the furniture 10 and the floor surface F and applies an elastic force in a direction in which the furniture 10 is restored from the tilted state. For this reason, when the furniture 10 tilts, the elastic force of the spring 28 is applied to the furniture 10 so as to recover from the tilted state, so that the furniture 10 can be prevented from falling. In particular, the external force applied to the furniture 10 does not reciprocate in the front-rear direction as an earthquake shakes, but the external force applied to the furniture 10 is only in one direction (for example, the weight balance of the stored items stored in the furniture 10 is Even in the case of being biased in one direction, the damper 23 alone does not restore the furniture 10 from the tilted state, but by providing the spring 28, the elasticity of the spring 28 in the direction to restore the furniture 10 from the tilted state. Since force is applied, the furniture 10 can be prevented from falling.

  Further, one end side of the damper 23 is connected to the front edge portion 13 and the rear edge portion 14 which are directions in which the furniture 10 is assumed to fall. Since the front edge portion 13 and the rear edge portion 14 are the most displaced portions when the furniture 10 is tilted, the damping force of the damper 23 is inclined by connecting the one end portion side of the damper 23 to this portion. It can act on force efficiently.

The present invention is not limited to the first embodiment 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) Although the fall prevention device is attached to the rectangular parallelepiped furniture in the first embodiment, as shown in FIG. 5, the horizontal cross-sectional shape of the main body 31 is circular, and the columnar support legs 32 are in the center. When attaching the fall prevention device 20 having the same configuration as that of the first embodiment to the article 30 provided, it is preferable to attach at least three fall prevention devices 20 at equal intervals in the circumferential direction of the outer peripheral edge. Thus, the fall prevention device can be attached regardless of the form of the furniture.
(2) In the first embodiment, only the one-effect damper whose damping force generated during the contracting operation is larger than the damping force generated during the extending operation is attached. However, the damping force generated during the contracting operation is generated by the damping operation. Only a single-effect damper smaller than the force may be attached. In this case, it is necessary to connect so that the one end part of the damper and the furniture (article) and the other end part of the damper and the floor surface (installation surface) are not separated.
(3) In the first embodiment, only the one-effect damper whose damping force generated during the contracting operation is larger than the damping force generated during the extending operation is attached. However, the damping force generated during the contracting operation is the damping generated during the extending operation. A single-effect damper smaller than the force may be mixed. In this case, in the case of an article that can be tilted in the front-rear direction as in the first embodiment, the damping force generated during the contraction operation is larger than the damping force generated during the extension operation at each of the front edge portion and the rear edge portion. Mix one-effect damper and small one-effect damper. In addition, the single-effect damper whose damping force generated during the contraction operation is smaller than the damping force generated during the extension operation does not separate the one end from the furniture (article) and the other end from the floor (installation surface). Need to be concatenated.
(4) In Embodiment 1, furniture has support legs, but furniture (articles) without support legs may be used.
(5) Although the spring is attached to the damper in the first embodiment, the damper and the spring (elastic body) may be separately attached between the furniture (article) and the floor surface (installation surface).
(6) In the first embodiment, the overturn prevention device includes a spring that applies an elastic force in a direction in which the furniture is restored from a tilted state, but the spring (elastic body) may not be provided. In this case, a support leg that supports the furniture (article) so as not to tilt when normally used is necessary.

  F ... Floor surface (installation surface), 10 ... Furniture (article), 23 ... Damper, 28 ... Spring (elastic body), 13 ... Front edge (edge), 14 ... Rear edge (edge), 12, 32 ... Support legs

Claims (4)

The lower surface of the article installed on the installation surface supported by a support leg extending continuously downward from the center of the lower surface, and is attached between the edge in the direction in which the article is inclined and the installation surface, An overturn prevention device comprising a damper that generates a damping force for attenuating the tilting force of the article.   The fall prevention device according to claim 1, further comprising an elastic body attached between the article and the installation surface and imparting an elastic force in a direction in which the article is restored from a tilted state.   The fall prevention device according to claim 1 or 2, wherein one end of the damper is connected to an edge in a direction in which the article is inclined. An article comprising the fall prevention device according to any one of claims 1 to 3 and the support leg.

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